Tesis sobre el tema "Pharmaceutical chemistry. South Africa"

The medicinal chemistry of selected marine algae indigenous to South Africa was investigated. Following the isolation and characterisation of a number of new and known compounds, the associated in vitro cytotoxic profiles of these new compounds was investigated. Plocamium maxillosum yielded two new cyclic polyhalogenated monoterpenes which were characterised as 2E-chloromethine-4E-chlorovinyl-4-methyl-5-cyclohexen-1-one (2.1) and 2Z-chloromethine-4E-chlorovinyl-4-methyl-5-cyclohexen-1-one (2.2) on the basis of one and two dimensional NMR spectroscopic data and MS analysis. These compounds were also found to have good cytotoxic activity against breast cancer cell lines. Although these compounds are based on a regular monoterpene skeleton, they represent an uncommon feature not often seen in cyclic halogenated monoterpenes from marine algae. Plocamium robertiae yielded one new cyclic polyhalogenated monoterpene identified as 4,5- dibromo-5-chloromethyl-1-chlorovinyl-2-chloro-methylcyclohexane (2.6) and one known compound called 2,4-dichloro-1-chlorovinyl-1-methylcyclohexane-5-ene or Plocamene D (2.9). Portieria hornemannii was collected from Port Edward in Natal and yielded three new compounds, namely; 3Z-1,6-dibromo-3-(bromomethylidene)-2,7-dichloro-7-methyloctane (3.1), 1E,3Z-1,6-dibromo-3-(bromomethylidene)-7-chloro-7-methyloct-1-ene (3.2), 1Z,3Z- 1,6-dibromo-3-(bromomethylidene)-7-chloro-7-methyloct-1-ene (3.3), and one known compound, namely; 3S,6R-6-bromo-3-(bromomethyl)-3,7-dichloro-7-methyloct-1-ene (3.4). Compounds 3.1 and 3.2 showed no cytotoxic activity against breast cancer cells. Another Portieria hornemannii sample was collected from Noordhoek in the Eastern Cape, it yielded one known compound referred to as 3Z-6-bromo-3-(bromomethylidene)-2,7- dichloro-7-methyloct-1-ene (3.5), as well as one new compound called portieric acid A (3.6) or 5-bromo-2-(bromomethylidene)-6-chloro-6-methylheptanoic acid. Portieric acid A showed slight cytotoxic activity and also represents a new class of compound within the genus Portieria. The isolation of secondary metabolites from the South African red alga, Laurencia glomerata, yielded two known compounds; 7-hydroxylaurene (4.9) and cis-neolaurencenyne (4.12), as well as one chamigrane related compound (4.11). Laurencia flexuosa yielded one known compound called 3Z-bromofucin (4.13). Using 1H NMR, GC and molecular systematics, a novel method for identifying different species of Laurencia was also investigated.

The use of traditional medicine through the use of medicinal plants in Africa and especially in South Africa has long been considered an important characteristic of people's daily lives and socio-cultural heritage. Cotyledon Orbiculata is among the medicinal plants that are used by South African traditional practitioners for the treatment of epilepsy and painful conditions such as corns, warts, toothache, earache, boils and various other ailments. However, the claim of therapeutic successes of medicinal plants by traditional medicine practitioners are hardly subjected to scientific scrutiny. This study therefore, investigated the anti-epileptic property of Cotyledon Orbiculata by studying the effects of the methanol extract of the plant against chemically induced seizures by pentylenetetrazole, picrotoxin, bicuculline and N-methyl-DL-aspartic acid in mice. The study also investigated the analgestic effects of Cotyledon Orbiculata by studying the effect of the plant extract on pain induced by acetic acid and hot plate thermal stimulation.

Magister Scientiae - MSc
The aim of this study is to isolate and evaluate the anticonvulsant components from the leaves of Leonotis leonorus (L) R.aR. and to see if there is any change in activity with the origin of the plant material and I or the season in which plant material is collected. Therefore, in this study, two sites were chosen for collection of plant material and the collection was made in summer and in winter. Chemical, physical and pharmacological methods were used to isolate, identify and to evaluate compounds isolated from the leaves of Leonotis leonorus for anticonvulsant activity.
South Africa

Sildenafil citrate (SC) is a phosphodiesterase-5 inhibitor that is used to treat pulmonary hypertension (PH) in paediatric patients. The purpose of these studies was to develop a formulation and manufacture an orodispersible tablet (ODT) that can be easily administered to neonates and children with PH. The advantages of ODT dosage forms include ease of administration, rapid dissolution of the API, SC. Furthermore the dosage form can be taken without water which is beneficial to patients without immediate access to potable fluids. A simple, rapid, accurate, precise and selective reversed-phase HPLC method was developed and validated in accordance with International Conference on Harmonization (ICH) guidelines and was successfully used for the analysis of SC as raw material and in SC containing pharmaceutical dosage forms. Preformulation studies were performed on SC, alone and in combination with potential excipients that could be used to make tablets. Investigations into potential interactions between SC and the excipients were performed using Differential Scanning Calorimetry (DSC) and Infrared Spectroscopy (IR). DSC results revealed that SC was compatible with all potential excipients except mannitol and magnesium stearate. However these interactions were not observed with IR and therefore it was concluded that the interactions were induced by the high temperatures that DSC operates at. Particle size and shape was also established by use of Scanning Electron Microscopy (SEM) and flow properties were monitored by calculating Carr’s Index (CI) and the Hausner Ratio (HR). Direct compression was used as the method of manufacture for SC tablets as this approach is simple and the most economic production approach. The powder blends were assessed for bulk and tapped density and the CI and HR were used to determine the flowability of the blends. The quality attributes of the resultant tablets that were monitored included uniformity of weight, friability, crushing strength, tensile strength, disintegration, wetting and in vitro dispersion times. Design of Experiments is an efficient statistical approach that has become a popular tool used in the pharmaceutical industry to optimize formulation compositions, as it allows for the investigation of several input factors at the same time whilst not using the tedious and traditional “ modification of one variable at a time” approach. A Central composite experimental design was chosen as the most appropriate means to optimize the formulation as it produces more accurate results as opposed to other experimental designs approaches as input factors are investigated at five different levels. Through the use of mathematical modelling, optimum concentrations of disintegrant(s) and an appropriate blending time were established. Analysis of the data from the experimental design and mathematical modelling studies reveal that no changes in disintegrant concentration or blending time altered the disintegration time of the formulation to any significant extent. This result is most likely due to the fact that the critical disintegrant concentration has been reached and increasing the disintegrant concentration further has no effect on disintegration time. It was also established that a change in the concentration of CMS and CRP altered the wetting time of the tablet significantly. Finally it was noted that there was a linear relationship between blending time and the uniformity of content of the tablets produced in these studies. The optimized product was a white tablet with a diameter of 7.31 mm with a thickness of 2.80mm.The dosage form had no visible cracks or evidence of picking or sticking. The tablet exhibits suitable friability and tensile strength while exhibiting a disintegration time of only 8s. Therefore an orodispersible tablet containing SC intended for paediatric use has been successfully developed, manufactured and optimized through the use of preformulation studies, appropriate quality control monitoring and mathematical modelling. These formulations require further optimization in respect of addition of flavours and or additional sweetening agents.

The study focuses on the political and economic geographies of pharmaceutical delivery. In 1997 the South African government passed the Medicines and Related Substances Control Amendment Act, sparking outrage from both the local and international pharmaceutical industry, and resulting in court action in 2001. The industry believed that South Africa was in breach of its obligations under international intellectual property law. Those fighting for pharmaceutical security hoped the court case would be a &lsquo
landmark&rsquo
in the global campaign for equitable access to medicines. This investigation seeks to analyse the domestic and international legacy of the court action. The inquiry takes its significance from the high prevalence rates of treatable diseases and the need for pharmaceutical security in South Africa and its neighbouring African countries. The absence of a sustainable international medicines delivery system is a global political, economic and moral failure. A solution is required that balances the positive productive forces of the market with a philosophy of justice and equity.

The main objective of this study was to investigate factors contributing to employee turnover in the South African pharmaceutical industry and to suggest strategies to minimize it. Employee turnover is a persistent problem facing both public and private organizations in South Africa. In addition to the costs incurred when an employee resigns, losing employees results in a loss of knowledge, skills and experience. Numerous studies have been undertaken globally on this topic. However, this problem continues to adversely affect organizations in several ways. Schwab (1991) suggests that this is because there are no clear resolutions yet to this challenge. Based on literature review conducted, there is no study undertaken in South Africa attempting to address this problem. The purpose of this study was to identify factors contributing to high turnover rate of pharmacists in South Africa (the pharmaceutical industry in particular) and to recommend strategies to address this problem. A quantitative research approach was followed when addressing this problem. Literature review was conducted on employee turnover and a questionnaire was developed. The questionnaire was used as a measuring instrument. Following a non-probability, convenience sampling method, two pharmaceutical companies in Gauteng and one in the Eastern Cape were surveyed. The results were analysed by a statistician using Epi-info and stata software as tools for statistical analysis. The following factors were found to be key factors contributing to employee turnover in the pharmaceutical industry: (i) lack of career advancement opportunities, (ii) uncompetitive salary packages, (iii) perceived inequity reflecting leadership challenges, (iv) insufficient recognition for good performance, (v) stress, and (vi) insufficient retention strategies. An effective retention strategy should address all factors that may contribute to employee turnover. A retention strategy that combines competitive salary packages, opportunities for learning and career advancement, recognition, equity and support structures (to deal with stress), should be used in the pharmaceutical industry. This will assist in creating a motivating climate, which is a pre-requisite for job satisfaction and, in turn, employee retention.

Type 2 diabetes mellitus is a chronic disease of pandemic magnitude, increasingly contributing to the disease burden of countries in the developing world, largely because of the effects of unhealthy lifestyles fuelled by unbridled urbanisation. In certain settings, patients with diabetes are more likely to have a healthcare encounter with a pharmacist than with any other healthcare provider. The overall aim of the study was to investigate the potential of South African community pharmacists to positively influence patient adherence and metabolic control in Type 2 diabetes. The designated primary endpoint was glycated haemoglobin, with the intermediate health outcomes of blood lipids, serum creatinine, blood pressure and body mass index serving as secondary endpoints. Community pharmacists and their associated Type 2 diabetes patients were recruited from areas throughout South Africa using the communication media of various nonstatutory pharmacy organisations. Although 156 pharmacists initially indicated interest in participating in the study, only 28 pharmacists and 153 patients were enrolled prior to baseline data collection. Of these, 16 pharmacists and 57 patients participated in the study for the full twelve months. Baseline clinical and psychosocial data were collected, after which pharmacists and their patients were randomised, nine pharmacists and 34 patients to the intervention group and 8 pharmacists and 27 patients to the control group. The sample size calculation revealed that each group required the participation of a minimum of 35 patients. Control pharmacists were requested to offer standard pharmaceutical care, while the intervention pharmacists were provided with a scope of practice diabetes care plan to guide the diabetes care they were to provide. Data were again collected 12-months postbaseline. At baseline, proportionally more intervention patients (82.4%) than control patients (59.3%) were using only oral anti-diabetes agents (i.e. not in combination with insulin), while insulin usage, either alone or in combination with oral agents was conversely greater in the control group (40.7%) than in the intervention group (17.6%) (Chi-squared test, p=0.013). Approximately half of the patients (53.8% control and 47.1% intervention) reported having their HbA1c levels measured in terms of accepted guidelines. There was no significant difference in HbA1c between the groups at the end of the study (Independent t-test, p=0.514). In the control group, the mean HbA1c increased from 7.3±1.2% to 7.6±1.5%, while for the intervention patients the variable remained almost constant (8.2±2.0% at baseline and 8.2±1.8% at post-baseline). Similarly, there were no significant differences between the groups with regard to any of the designated secondary clinical endpoints. Adherence to medication and self-management recommendations was similarly good for both groups. There were no significant differences between the two groups for any of the other psychosocial variables measured. In conclusion, intervention pharmacists were not able to significantly influence glycaemic control or therapeutic adherence compared to the control pharmacists.

This thesis investigates the variability occurring in the secondary metabolites produced by three South African marine molluscs. Chapter Two discusses the isolation and spectroscopic structure elucidation of the metabolites isolated from two Siphonaria species. The re-investigation of Siphonaria capensis yielded siphonarienfuranone (2.2) as the only common polypropionate isolated from both the 1998 and 2009 collections of S. capensis from the same areas suggesting possible seasonal or genetic variation in polypropionate production. The sterol cholest-7-en-3,5,7- triol (2.33) was also isolated form the 2009 collection of S. capensis and this is the first time this compound has been isolated from a Siphonaria species. The second species, Siphonaria oculus is closely related to S. capensis and the investigation into the former’s secondary metaboliteproduction revealed 2.2 as a major metabolite suggesting an inter-species overlap in polypropionate production. Three new polypropionate metabolites, 2.35, 2.36 and 2.37 were also isolated from S. oculus. An unsuccessful attempt was made to establish the absolute configuration of 2.37 using the modified Mosher’s method and the limited amount of 2.37 available prevented any further attempts at resolving the absolute configuration of this compound. The 1H NMR analysis of the defensive mucus collected directly from S. oculus revealed the presence of the acyclic polypropionate 2.37 as a minor metabolite. The absence of characteristic signals for the furanone containing compounds 2.2, 2.35 and 2.36, might suggest that these compounds cyclise from a hypothetical acyclic precursor (2.38) during standard work up of bulk acetone extracts of Siphonaria species. Chapter Three discusses the re-isolation and spectroscopic structure elucidation of the metabolites isolated from the nudibranch, Leminda millecra. Three known natural products, millecrone A (3.1), 8-hydroxycalamenene (3.6) and cubebenone (3.8) were re-isolated from our 2010 collection of L. millecra, as well as the new minor metabolite 8-acetoxycalamenene (3.16). The cytotoxic prenylated toluquinones and toluhydroquinones (3.9-3.15) initially isolated from the 1998 collection of L. millecra were not found in the 2010 collection supporting the hypothesis that these compounds may be of fungal origin. L. millecra clearly shows variability in the compounds sequestered by this species with millecrone A (3.1) being the only common metabolite in the three investigations of L. millecra to date. An unsuccessful attempt was made to establish the absolute configuration of 3.1, 3.6 and 3.8 through initial LAH reduction of the ketone moiety contained in 3.1 and 3.8 and esterification of the resultant diastereomeric alcohol mixtures and the phenol functionality in 3.6 with (1S)-camphanic chloride. Crystallisation of the (S)- camphanate esters of 3.6 and 3.8 for X-ray analysis were unsuccessful, while the unexpected conjugate addition of a hydride in 3.1 resulted in complex diastereomeric mixtures which could not be separated by HPLC.

All organisations compete on the basis of service. In today‘s highly competitive world, organisations need to compete to retain their customers and to offer good customer service that will give them a competitive advantage. In the South African pharmaceutical market, the introduction of the Single Exit Price (SEP) and generic substitution have led to the price of equivalent medicines no longer being the differentiating factor in a customer deciding which manufacturer‘s product to purchase. The availability of generic medicines at the pharmacy or hospital has become the differentiating factor. Two types of customers exist in any organisation, namely, external customers and internal customers. Much has been written about the external customer, but less about the internal customer. Many managers do not perceive internal customer service as a priority. Any organisation attempting to deliver quality service to their external customers must begin by serving the needs of their internal customers. Internal service quality is characterised by the attitudes that people have towards one another and in the way that employees serve one another inside the organisation. By improving customer service, the organisation can improve its profitability, sustainability and customer retention. The aim of this study was to determine whether the levels of internal customer service between the three sections of Aspen Pharmacare are optimal. Determining the current performance levels between the staff of the sections will assist in highlighting the areas that require attention. The three sections of Aspen Pharmacare that are internal customers of one another and have been used in the study are: - production; - demand planning; and - distribution. The results of the study show that all three sections rate three service quality dimensions (communication, tangibles and reliability) as important. The results were used to develop an internal customer service model for Aspen Pharmacare.

This dissertation describes chemical investigations involving 11 Argentinean plant species and a sample of Chilean propolis. In total, 18 known and four novel compounds were isolated and identified. The compounds were tested in various antimicrobial assays. Three novel triterpenes, 3,4- seco-olean-12-en-3,28-dioic acid (4), 3alpha,-hydroxyolean-11-en-28,13 beta-olide (5), and 3alpha-hydroxyolean-11:13(18)-dien-28-oic acid ( 6) were isolated from the aerial parts of the Argentinean shrub, Junellia tridens (Lag.) Mold. (Verbenaceae). Another five compounds, oleanolic acid (1), oleanonic acid (2) and epioleanolic acid (3), all biosynthetically related to the three new oleananes, as well as epibetulinic acid (7) and sitosterol (8), were also isolated. LC-MS data are provided on the occurrence of these triterpenes in six other species of Junellia. We report the minimum inhibitory concentrations (MICs) of compounds 1--8 against Mycobacterium tuberculosis, and conclude that they are responsible for the antitubercular activity originally observed in the crude plant extract. Four other plants showing preliminary antitubercular activity were also investigated. The EtOAc extracts of Acantholippia seriphioides and Adesmia ameghinoi contained oleanolic acid (1) as their main constituent. The organic soluble portions of Chiliotrichium diffusum and Lathyrus magellanicus contained large amounts of ursolic acid (12) and sitosterol (8), respectively. Bioassay of the predominant compounds in these plants indicated that triterpenes were responsible for the antitubercular activity observed in the crude extracts. Fractionation of propolis (a product of honey beehives) from Colliguay in Central Chile led to the isolation, identification and bioassay of a novel gamma-lactone (14), five flavonoids (15--19), two diarylheptanoids (20--21), and a prenylated coumarin (22). All structures were elucidated primarily by 1D and 2D NMR and mass spectrometry. Based on the traditional use of propolis as an antimicrobial agent, the bioactivity of the purified compounds was determined against Staphylococcus aureus, Escherichia coli, Enterococcus faecium, and Candida albicans . Microscopic analysis of pollen present in the propolis provided clues to its botanical origins.

The brine shrimp lethality assay was used as a preliminary tool to screen eighteen seaweeds collected from the South African coast. Of the seaweeds tested, the red algae Plocamium corallorhiza and Hypnea rosea, and the green alga Halimeda sp., showed the most potent activity. The chemical investigation of P. corallorhiza resulted in the isolation and structural elucidation of five previously undescribed secondary metabolites, along with three known compounds and four possible artifacts of the extraction process. Standard spectroscopic methods and comparison with known compounds were used to determine the structures of the new metabolites. The new compounds included the linear halogenated monoterpenes 4,8-dibromo-1, 1-dichloro-3,7-dimethyl-2,6-octadiene (99), 4,6-dibromo-l, 1-dichloro-3,7-dimethyl-2,7-octadiene (100), 4,8-dibromo-l, 1,7-trichloro-3,7-dimethyl-2,5-octadiene (101) and 3,4,6,7-tetrachloro-3,7-dimethyl-l-octene (102) and the cyclic monoterpene 5-bromo-5-bromomethyl-I-chlorovinyl-2,4-dichloro-methylcyclohexane (103) while the known compounds were identified as 4-bromo-5-bromomethyl-1chlorovinyl-2,5-dichloro-methylcyclohexane (35), 1,4,8-tribromo-3, 7 -dichloro-3,7-dimethyl-1,5-octadiene (94) and 8-bromo-1,3,4,7-tetrachloro-3,7-dimethyl-1,5-octadiene (96). The four methoxylated compounds (104-107) were presumably formed via a standard substitution reaction between the halogenated monoterpenes 96 and 101 and MeOH, which was used as a component in the extraction solvent. With over 100 000 natural products having been reported, it has become necessary to employ an efficient dereplication strategy to quickly identify known compounds. A simple Gas Chromatography-Mass Spectrometry (GC-MS) method for the efficient physicochemical screening, identification and dereplication of Plocamium metabolites was developed. In this study the crude extracts of P. corallorhiza, P. cornutum and P. maxillosum were screened by GC-MS and the retention times and mass spectral fragmentation patterns of compounds 94, 96, 99 - 107 were used to quickly identify known and new compounds in the crude extracts of P. cornutum and P. maxillosum. This data indicated that compounds 99, 100, 103 were present in both P. corallorhiza and P.cornutum, while compound 102 was found to be present in P. corallorhiza, P. cornutum and P. maxillosum. These studies also indicated that ecotypes and chemotypes are not a significant feature of P. corallorhiza and P. cornutum. Different species of Plocamium (namely: P. corallorhiza, P. cornutum, and P. maxillosum) have very different chemical profiles, and GC may therefore have appreciable taxonomic application in the identification of the different Plocamium spp. which are endemic to South Africa.

The Council of Australian Therapeutic Advisory Groups (CATAG) (2013) define a Pharmaceutical and Therapeutics Committee (PTC) as a ‘multi-disciplinary team committee with a commitment to the overall governance of the medicines management system in health service organizations to ensure the judicious, appropriate, safe, effective and cost-effective use of medicines’. The multi-disciplinary team includes the health care providers, who are actively participating in the health care systems, such as doctors, pharmacists, nurses, administrators, finance officers, quality improvement managers and other staff members who participate in the medicine use processes according to their knowledge and skills. The major role of this committee is to evaluate and promote rational drug use by health care providers and consumers. In addition, this committee is responsible for developing systems and strategies to prevent adverse medicine reactions and medication errors, enhance rational prescribing and dispensing, provide educational activities and ensure the use of quality and cost-effective medicines. This is a cross-sectional study that was aimed at exploring the structure, activities and functions of public sector institutional Pharmaceutical and Therapeutics Committees (PTC) in the Eastern Cape (EC) Province in South Africa (SA). The primary objectives of the study were to (i) investigate and describe the structure, functions and the activities of the institutional PTCs, and (ii) explore and describe the perception of PTC secretariats on the functionality of the institutional PTCs. A purpose-designed questionnaire including both quantitative and qualitative aspects adapted from other international studies was piloted prior to being used for data collection. The secretariats of the institutional PTCs were requested to complete the questionnaire. Data were analysed using descriptive statistics for the quantitative aspects and thematic analysis for the qualitative component of the questionnaire. Data collection commenced after approval by the relevant ethics committees had been granted. The findings of the study reflected that the majority of the PTCs in the EC province, SA are district/sub-district PTCs which are a cluster of a number of health care institutions in close proximity. The PTC members were appointed by the executive authority as recommended by the literature and other guiding documents. As expected the nurses were dominant as the members of the PTCs in these district/sub-district PTCs. The secretariats were the pharmacists where pharmacists were available and chairperson were doctors. These findings correspond to the recommendations by the National Department of Health PTC policy (2015) and the studies conducted in other countries. A number of PTCs had sub-committees formed e.g. ABC analysis review committee, medicine utilization evaluation (MUE) committee and pharmacovigilance committee to optimise their functionality. Out of 15 PTCs only five PTCs with sub-committees reported functions and interventions, establishment of policies and SOPs. The rest had no outcomes or interventions reported. Poor production of policies and SOPs was observed which differs from other countries’ PTCs. The focus of sub-committees in other countries is the development of formulary and policies related to medicine use. These findings pose a question regarding the functionality and effectiveness of the existing institutional PTCs in the province. In addition, the basic documents that are required to run the PTC were unavailable in a number of PTCs. Barriers to the functionality of PTCs were reported i) Lack of pharmacists and training in PTCs. ii) The rural nature of the EC province and iii) Unavailability of resources including lack of re-imbursement of personal costs. These findings reveal that budget allocation for institutional PTCs is crucial for their functionality. It can be concluded that in the EC province the institutional PTCs which are active and effective are low in number and do not cover all geographical areas. Secondly there is a need for training and educating the PTC members on the role of the PTC members, role of sub-committees, development of policies, SOPs and the basic documents for the functionality of the committee. It is also important that during training the monitoring and evaluation of the effectiveness of the committee is emphasised. Therefore, the choice of the PTC objectives should be measurable as they can assist as indicators of effectiveness. Support by the executive authority has been observed.

Mini-study project (MBA)--University of Stellenbosch, 2003.
ENGLISH ABSTRACT: This report reviews the global and South African pharmaceutical and biotechnology industries and provides an overview of the changes taking place within these two industries. It highlights the impact this relationship will have on a developing South African biotechnology industry. Since the 1980s the pharmaceutical industry has experienced phenomenal growth in sales and profits. By the mid 1990s drug sales exceeded USD250 billion. Today the pharmaceutical industry is dominated by multi-national corporations with extensive R&D budgets, widespread use of trademarks and patents and complex commercial process technology. However they face threats from depleted product pipelines, patent expiry on billion dollar drug products, generic competition, increases in drug approval times, costs and price pressures. The entrepreneurial biotechnology industry promises to solve a number of the pharmaceutical industry's problems. In recent years biotechnology companies proved more effective in the development of new molecular entities. They promise individualised therapeutics, novel and more efficacious drug discovery and development of preventative treatments. However the decrease in equity financing after 2001 left almost 40% of biotechnology companies with less than 1 year of R&D funding. The industry experienced losses again in 2002 and the world is divided over the ethical, environmental and economic implications of biotechnological applications. The biotechnology and pharmaceutical industries have a symbiotic but antagonistic relationship. The change in this relationship will hugely affect South Africa's ideals of developing a biotechnology industry. Various diseases plague South Africa including HIV/AIDS, TB, obesity, diabetes, hypertension and infective diseases. These diseases will have a huge impact on South Africa's society. Yet only 10% of global R&D funding is committed to third world diseases and existing drugs and treatments are either not effective or too expensive for developing countries. It is in this situation that biotechnology and the development of a biotechnology industry could playa major role in alleviating South Africa's health burden. South Africa is already capable in first generation biotechnology, but third generation applications holds the most promise. Developing countries face various obstacles and challenges, but all boast well for South Africa. The government has committed R400 million (over a three year period) to utilize South Africa's biotechnology potential. Further, the country has highly skilled researchers, indigenous plant and animal species, a diverse population and a favorable exchange rate (low R&D costs).
AFRIKAANSE OPSOMMING: Die projek ondersoek beide die globale en Suid Afrikaanse farmaseutiese en biotegnologie industrieë. Verder word die veranderinge wat plaasvind in die industrieë onder die soeklig geplaas. Die projek beklemtoon die impak wat die verhouding sal hê op 'n ontwikkelende biotegnologie industrie in Suid Afrika. Die farmaseutiese industrie het sedert die 1980s dubbel syfer groei getoon in omsete en wins. Teen die middel 90's het verkope van farmaseutiese middels US$250 miljard wêreldwyd oorskry. Vandag word die farmaseutiese industrie oorheers deur multi-nasionale korporasies met omvattende navorsing en ontwikkelings begrotings, algemene gebruik van handelsmerkte, patente en komplekse proses-tegnologieë. Ten spyte hiervan word die industrie bedreig deur leë produksie-lyne, verval van patente, miljard dollar farmaseutiese produkte, generiese kompetisie, verlengde produk-goedkeurings periodes en prys-mededinging. Die biotegnologie industrie met sy innoveerende eienskappe beloof om verskeie van die farmaseutiese industrie se probleme op te los. Onlangs het biotegnologie maatskappye getoon dat hulle meer effektief is in die ontwikkeling van nuwe molekulêre eenhede. Biotegnologie beloof nuwe en meer effektiewe produk-ontwikkeling asook beter individuele terapieë en voorkomende behandelings. Die industrie staar finansiële krisisse in die gesig. Slegs 40% van biotegnologie maatskappye het voldoende navorsing en ontwikkelings-kapitaal tot 2004. Dit is hoofsaaklik as gevolg van 'n afname in eienaars-finansiering na 2001. Die industrie as 'n geheel het weereens 'n verlies gelei in 2002 en die wêreld is verdeeld oor die etiese, omgewings en ekonomiese implikasie van biotegnologiese toepassings. Die biotegnologie en farmaseutiese industrieë het 'n simbiotiese maar tog vyandige verhouding. 'n Verandering in die verhouding gaan Suid Afrika se ideale om 'n biotegnologie industrie te skep grootliks beïnvloed. Suid Afrika gaan gebuk onder verskeie siektes insluitende MIVNIGS, TB, vetsugtigheid, diabetes, hipertensie en infeksie siektes. Hierdie siektes het 'n groot impak op Suid Afrika se samelewing. Tog word slegs 10% van die globale navorsings en ontwikkelingsfondse aangewend om 'n oplossing te vind vir derdewêreld siektes. Verder is bestaande produkte en behandelings oneffektief of onbekostigbaar vir ontwikkelde lande. Dit is in sulke gevalle waar biotegnologie en die ontwikkeling van 'n biotegnologie industrie 'n groot rol kan speel in die verligting van Suid Afrika se gesondheids-las. Suid Afrika is vaardig in eerste-generasie biotegnologie, maar wêreld wyd hou derde generasie biotegnologie die meeste belofte in. Die tegnologie is tot op hede onderbenut in Suid Afrika. Ontwikkelende lande staar verskeie uitdagings in die gesig, maar Suid Afrika het talle sterk punte. Die regering het R400 miljoen (oor 'n drie jaar periode) beskikbaar gestel vir die ontwikkeling van Suid Afrika se biotegnologie potensiaal. Die land beskik ook oor navorsers van hoogstande gehalte, onbenutte inheemse plante en dier spesies, 'n diverse populasie en 'n gunstige wisselkoers (lae navorsings en ontwikkelings kostes).

Despite the deteriorated state of health care in South Africa, the government remains committed to realising the right of every citizen to access health care, including good, quality and essential drugs. In recognising the availability of pharmaceutical facilities as a major component of access to health care, and the previous imbalances in the distribution of pharmaceutical structures and services, laws pertaining to the licensing and ownership of pharmacies were amended and promulgated in 2003 to address the distribution problem. In addition, regulations relating to a transparent priCing system on medicines and related sUbstances were introduced in 2004. These, coupled with factors influencing the choice of a pharmacy location, and the deficiencies in human resourges exercising an impact on both pharmacy and other health care personnel, have influenced the distribution and availability of pharmaceutical structures in South Africa from the year 2003 to 2008. OBJECTIVE: The main objective of this study was to investigate the availability and distribution of pharmaceutical structures registered with the South African Pharmacy Council, in South Africa, as of 2003 until 2008. METHOD: Data on the total number and geographical distribution of registered pharmaceutical structures in South Africa were obtained from the South African Pharmacy Council's register of pharmacies of August 2003, 2004, 2005, 2006, 2007 and 2008. The registered pharmaceutical structures were categorised according to their nature of services to the patient into "direct service" and "indirect service" (support) pharmacies. Availability was taken to refer to the actual presence of the pharmaceutical structures in relation to the demand for the services and measured quantitatively using population: provider ratios. The 'population' for indirect service pharmacies was taken as the direct service pharmacies and, the 'population' for direct seNice pharmacies was taken as the estimated population of the different geographical regions. RESULTS: The results revealed a 12% increase in the total number of registered pharmaceutical structures between the study years, to a total of 4227 pharmaceu'tical structures in 2008. Gauteng was identified as the province with the highest number of registered pharmaceutical structures, while the Northern Cape province contained the lowest number of registered pharmaceutical structures throughout the entire study period. The percentage of municipalities without any registered pharmaceutical structures decreased from 23% in 2003 to 19% in 2008. The indirect seNice pharmacies constituted 14% of the total number of registered pharmaceutical structures in South Africa. Most of these structures were situated in the province of Gauteng throughout the study period. National availability of these structures only improved for the manufacturing pharmacies. The registered direct seNice pharmacies increased by 13.2% to total 3642 pharmacies in 2008. Approximately 20% of the municipalities in the country (respectively 5.5% of the population) did not contain any registered direct seNice pharmacy in 2008. Most of these municipalities were situated in the KwaZulu-Natal province. The province of Gauteng contained the highest proportion (32%) of the direct seNice pharmaceutical structures. The decrease in the pharmacy per population ratio of the structures from 1: 14 547 people in 2003 to 1: 13 615 people in 2008 indicated an improvement in the availability of the structures. However, the improved availability did not take effect within each province as the Northern Cape, Mpumalanga and Gauteng provinces experienced an increase in the pharmacy per population ratio. CONCLUSION: The availability of registered pharmaceutical structures in South Africa improved between 2003 and 2008. However, the distribution of these structures remains geographically uneven and inequitable to the population of the country.
Thesis (M.Pharm. (Pharmacy Practice))--North-West University, Potchefstroom Campus, 2010.

Brands are recognised as one of the most valuable assets that a company can possess and therefore brands are key role-players in the business strategies of organisations. The rivalry amongst competitors in the pharmaceutical industry is fierce and companies should design their strategies in such a way in order to achieve competitive advantage. Brand loyalty is regarded as a powerful tool in the development of pharmaceutical brands. The main aim of this study was to measure brand loyalty in the pharmaceutical industry of South Africa and to establish whether patients are brand loyal to original pharmaceutical brands and the influence of generics on pharmaceutical brand loyalty. The measurement of brand loyalty in the pharmaceutical industry is based on Moolla’s brand loyalty framework for the FMCG (fast moving consumer goods) industry. This study also aimed to determine whether Moolla’s FMCG brand loyalty framework is applicable to the pharmaceutical industry. The twelve brand loyalty influences identified by Moolla are: Customer satisfaction; Switching costs; Brand trust; Repeat purchase; Involvement; Perceived value; Commitment; Relationship proneness; Brand affect; Brand relevance; Brand performance and Culture. The empirical study was conducted among 250 over-the-counter medicine consumers with different demographic profiles. The methodology included the sampling procedure, data collection, questionnaire development and statistical techniques used. Results were analysed with regards to Factor analysis; the Kaiser- Meyer-Olkin measure of sampling adequacy; Cronbach Alpha coefficients; Bartlett’s test of sphericity, mean values and effect sizes. The Empirical results through quantitative analysis included the validity of the research instruments, the calculation of the reliability coefficients which reported on the significance of the research variables. The results were presented in a conceptual framework to measure pharmaceutical brand loyalty. The results of this study concluded that the brand loyalty influences as identified by Moolla are important for measuring pharmaceutical brand loyalty. The results of this study also concluded that patients are indeed brand loyal and do prefer branded pharmaceuticals to generic pharmaceuticals in the over-the-counter medicine industry of South Africa. The importance of this study is the contribution of a brand loyalty framework to measure pharmaceutical brand loyalty which will aid pharmaceutical companies in the strategic management thereof.
Thesis (MBA)--North-West University, Potchefstroom Campus, 2013

Thesis (MBA)--Stellenbosch University, 2002.
Some digitised pages may appear illegible due to the condition of the original hard copy.
ENGLISH ABSTRACT: A few years ago, pharmaceuticalcompanies were more inclined to look at business from the inside out. The principal focus was on the company's goals, and identifying and selling to customers were the method of achieving those goals. However,today the customer is king and therefore the focus is shifting to accommodatethis change. The road to success - or failure - is now an expressway, and companies must be ready to accelerate,tum, or stop quickly. Flexibilityand manoeuvrabilitymean a great deal in an increasinglycompetitivemarketplace(Gabe & Goldberg, 1999). What makes a sales team effective in today's competitive global market? What are the key drivers of success in pharmaceutical sales team effectiveness? The most prominent trend in the US market is customer focus, and the most prominent issue is the recruitment and retention of top performers. Today's focus on relationship building may have occurred in part because companies found that their relationships were less than ideal. Nearly 60% of US pharmaceutical companies use customersatisfaction results, among other measurements, to determine the effectiveness of their sales force. A sales force that can make the transition from selling the product to selling the solution - which is the essence of customer focus - has a better chance of earning customer confidence and "partnering" (Gabe & Goldberg, 1999). To isolate factors that make a pharmaceutical sales representative effective is not easy. The best pharmaceutical representatives have excellent selling skills and behaviours, exhibit consistent performance, build networks, contribute to their teams, focus on the most profitable accounts, open new accounts, and win customer loyalty. How does one identify top pharmaceutical salespeople? Look for the representatives with the ability to learn continuously from experience, to take full responsibility for professional development, to size up each situation, and to apply the most effective skills for that encounter. Most often, they will be the ones using consultative and adaptive selling dialogue techniques (Snader, 2002). According to the study, it was evident that the following effectiveness criteria or selling task characteristics have a definite impact on sales force effectiveness and in turn should be part of every salesperson's capabilities: territory management, objection handling, business planning, adaptive selling, customer focus, knowledge, service, selling skills and training.
AFRIKAANSE OPSOMMING: In die verlede was farmaseutiese maatskappye geneig om hul besigheid van binne na buite te ontleed. Die belangrikste fokuspunt was die maatskappy se doelwit en die identifisering van, en verkope aan hul kliënte die middel tot die doelom hierdie doelwitte te bereik. Vandag, daarenteen kraai die kliënt koning en die fokuspunt het verskuif om by hierdie verandering aan te pas. Die verskil tussen die sukses en mislukking van 'n maatskappy sal afhang van die buigsaamheid en stuurbaarheid van die maatskappy om gereed te wees vir enige aksie in hierdie toenemend mededingende mark (Gabe & Goldberg, 1999). Wat maak 'n verkoopspan doeltreffend in vandag se mededingende globale mark? Wat is die sleutel eienskappe wat sukses sal waarborg vir 'n farmaseutiese verkoopspan? Die belangrikste neiging in die Amerikaanse mark is kliënte-fokus en die mees prominente kwessie is die werwing en behoud van die top presteerders. Die fokusverskuiwing na die verhouding tussen die verkoopsverteenwoordiger en die kliënt het plaasgevind nadat maatskappye besef het hulle het nie ideale verhoudings met hulle kliënte nie. Nagenoeg 60% van alle Amerikaanse farmaseutiese maatskappye gebruik onder andere ook resultate van kliënte-tevredenheid vraelyste as 'n maatstaf om die doeltreffendheid van hulle verkoopspan te bepaal. 'n Verkoopspan wat in plaas van 'n produk verkoop eerder aan die kliënt 'n oplossing vir sy spesifieke probleem bied - wat die kern van 'n kliënt-gefokusde benadering is - skep vertroue by die kliënt en lei tot 'n suksesvolle vennootskap tussen die partye (Gabe & Goldberg, 1999). Dit is baie moeilik om eienskappe te identifiseer wat 'n farmaseutiese verteenwoordiger se doeltreffendheid verseker. Die beste farmaseutiese verkoopsverteenwoordigers gebruik uitstekende verkoopstegnieke, bou netwerke, is goeie spanlede, fokus op die mees winsgewendste kliënte, wen nuwe kliënte en die lojaliteit van hulle kliënte. Hoe word top farmaseutiese verkoopspersone dan geïdentifiseer? Kyk uit vir die verteenwoordiger wat die vermoeë het om te leer uit ondervinding, wat volle verantwoordelikheid neem vir sy persoonlike ontwikkeling, wat elke situasie ontleed en dan die toepaslike vaardighede gebruik vir die spesifieke situasie. Meestal sal dit die verteenwoordigers wees wat konsulterende en adaptiewe dialoogtegnieke gebruik (Snader, 2002). Volgens die studie was dit duidelik dat die volgende kriteria vir doeltreffende verkope of verkoopseienskappe 'n defnitiewe impak het op 'n verkoopsspan se doeltreffendheid en dus deel moet uitmaak van elke verkoopspersoon se vermoë: Areabestuur, die hantering van objeksies, besigheidsbeplanning, 'n adaptiewe verkoopstyl, 'n kliënt gefokusde benadering, kennis, diens en opleiding.

This study aimed to identify barriers to the availability of essential drugs at health facilities, to identify implementable solutions to those barriers, to develop a monitoring system for tracking implementation of solutions and for tracking drug supply.

The pharmaceutical industry is one of the fastest growing and developing industries in the world today. With the ever advancing technology and manufacturing techniques, quality assurance has become the focus of regulatory bodies all over the world. The implementation of quality management systems (QMS) that ensures that quality is built into every step of the design and manufacturing process has been the focus of many pharmaceutical companies. With the implementation of quality systems, employee’s perception of those systems and overall quality standards of the organisation is very important in establishing the quality culture of the organisation. To benefit from sustainable quality systems the organisations must ensure that employees understand the importance of the systems and that employee’s take personal responsibility for ensuring that their functions are performed correctly the first time. FKMSA has invested in a QMS that seeks to integrate all quality issues. The quality system includes documentation, deviations, corrective and preventative action (CAPA), change controls and quality risk management (QRM) in the entire facility. This system is administered by the quality control department, but each department takes ownership for their quality issues with support and guidance from the quality unit. FKMSA also firmly believes that quality cannot merely rely on the quality control test results; every step of the production process has a quality aspect built in to ensure that quality standards are adhered to. Every employee is trained, assessed and deemed competent before they can perform their duties; this is to ensure that human errors are kept to a minimum. Employee’s perception of quality is an integral part of quality assurance and it is important for the organisation to know what the employees believe to be the company’s standards of quality.

Particle precipitation involves the injection of energetic particles into the ionosphere which could increase the ionisation and conductivity of the upper atmosphere. The goal of this study was to examine the ionospheric response and changes due to particle precipitation in the region over South Africa, using a combination of groundbased and satellite instruments. Particle precipitation events were identified from satellite particle flux measurements of the Defence Meteorological Satellite Program (DMSP). Comprehensive studies were done on the events of 5 April, 2000 and 7 October, 2000. Analysis of the data from the satellite instruments indicates that no particle precipitation was observed over the South African region during these events and that it is unlikely to occur during other such events. To validate the data, methods and tools used in this study, precipitation in the South Atlantic anomaly (SAA) region is used. Satellite ion density measurements revealed that strong density enhancements occurred over the SAA region at satellite altitudes during the precipitation events, but this did not occur in the South African region. The measurements also revealed how the ionisation enhancements in the SAA region correlated with geomagnetic and solar activities. Particle precipitation and convective electric fields are two major magnetospheric energy sources to the upper atmosphere in the auroral and the SAA regions. These increase dramatically during geomagnetic storms and can disturb thermospheric circulation in the atmosphere and alter the rates of production and recombination of the ionised species. Ionosonde observations at Grahamstown, South Africa (33.30S, 26.50E), provided the data to build a picture of the response of the ionosphere over the South African region to particle precipitation during the precipitation events. This analysis showed that, within the confines of the available data, no direct connections between particle precipitation events and disturbances in the ionosphere over this region were revealed.

The objects of the South African Pharmacy Council in terms of the Pharmacy Act, 1974 (5311974) as amended are, inter alia, "to uphold and safeguard the rights of the general public to universally acceptable standards of pharmacy practice in both the private and the public sector" as well as "to establish, develop, maintain and control universally acceptable standards of practice of the various categories of persons required to be registered.. ." One of the major difficulties health care providers worldwide are faced with is how to maintain a proper balance between the trio goals of health care, namely adequate access, high quality and acceptable costs (Li, 2003:192-193). Relatively little is known about such problems as do exist for patients regarding access to pharmaceutical services (Doucette et al., 1999:1268). Two main objectives were identified for this study, namely to investigate the demographic profile of community and institutional pharmacies registered with the South African Pharmacy Council; and to determine the standard of pharmaceutical services provided by these pharmacies. Inspection results of community and institutional pharmacies were obtained from the South African Pharmacy Council and extracted for the time period 1 January 2004 to 31 May 2005. To determine the demographic and geographic profile of these pharmacies, data of the Register of Pharmacies of the South African Pharmacy Council for August 2003, 2004 and 2005 were merged with the Census data of South Africa of 2001. It was found that the total number of pharmacies in both the public and private sectors increased with 2.1% (n=68) from August 2003 to August 2005. Public and private pharmacies that provided services directly to patients increased with 6.3% (n=33) and 1.3% (n=35) from August 2003 to 2005. It was found that the Gauteng province was the best provided with registered pharmacies in South Africa, as only 0.06% (n=5 783) of the population did not have any registered pharmacy available on municipality level. It was also revealed that the majority of inspections were carried out in Gauteng, whilst this province accounts for only 19.7% of the total population of South Africa. During the study period a total of 1178 community pharmacy inspections were carried out in 1103 community pharmacies (one or more inspections per pharmacy) representing 43% (n=2 550) of the total number of community pharmacies registered with the South African Pharmacy Council during May 2005. Nationally community pharmacies achieved a score of 92.27 (+ 6.65 per cent) for compliance with Good Pharmacy Practice guidelines. The lowest compliance score (73.34 + 27.49 per cent) was obtained for the availability of written standard operating procedures and the highest was for the promotion of public health (99.02 + 6.30 per cent). No practical significant differences (dc0.8) were found between the overall compliance scores obtained by community pharmacies of the different provinces. The highest compliance score was obtained by community pharmacies in the Free State (93.09 + 4.90 per cent), followed by Western Cape, Eastern Cape, Kwazulu Natal, Limpopo, Northern Cape, Gauteng, Mpumalanga and the North West. A total of 343 institutional pharmacy inspections (one or more inspections per pharmacy) were carried out in public and state subsidised institutions (n=245), private institutions (n=90) and mine hospitals (n=5). These pharmacies represented 46% of the total number of institutional pharmacies registered with the South African Pharmacy Council during May 2005. Nationally all institutional pharmacies (both private and public) achieved a score of 92.49 + 8.33 per cent for compliance with Good Pharmacy Practice guidelines for all above-mentioned aspects. Nationally public and state subsidised institutional pharmacies obtained a lower compliance score (91.02 + 9.08 per cent) than private institutional pharmacies (96.39 + 3.91 per cent). Lastly, a grading system was developed that was based on the results obtained through this study, in order to quantify the standard of pharmaceutical services provided by pharmacies in South Africa.
Thesis (M.Pharm. (Pharmacy Practice))--North-West University, Potchefstroom Campus, 2007.

Optimal management of a chronic disease, like asthma, requires the active participation of patients. To achieve this, patients require education about asthma. Many of the recommended components of asthma care and management might not be effective without adequate patient education. Pharmacists in community, hospital and clinic practice are well placed to provide continued information and reinforcement of key messages, in order to improve compliance with medication and the outcomes of asthma management plans. Pharmacists may be able to increase medication adherence with patient counselling and monitoring systems and by facilitating communication with physicians. However, regardless of this, it remains uncertain whether pharmacist-patient interactions improve patient outcomes, and in spite of recommendations for teamwork and a multidisciplinary approach in the education of asthma patients, medical doctors and nurses are still largely responsible for carrying out the greatest part of patient education. The objectives of this study were therefore to determine the impact of pharmaceutical care services at a primary health care level on the management and well-being of asthmatic patients; to determine the effect of complex or multi-faceted pharmaceutical interventions, in patients with asthma, on lung function, asthma knowledge, attitudes and perceived self-management efficacy, asthma related quality of life and asthma control; and to determine the extent to which pharmacotherapeutic interventions, with regards to medication changes and dosage changes, are accepted and implemented by doctors. A randomised-control study was conducted at a primary health care clinic in the Eastern Cape. A total of 120 patients were allocated to two groups of sixty patients each (a Control Group and an Intervention Group). Baseline values were measured and follow-up interviews and post-intervention data collection were conducted three months afterwards for each group. Patients in the Control Group were attended to by the clinic staff as usual. Patients in the Intervention Group were educated on their disease by a pharmacist. The use of a customised 500ml plastic bottle as a spacer was suggested and each patient’s medication was evaluated against the Standard Treatment Guidelines for the management of asthma in adults at the primary health care level and where necessary, prescribing recommendations were made. Following assessment of the medication regimens of the patients in the Intervention Group, a total of 49 prescribing recommendations were made, of which 73 percent were accepted by both the doctor and patient. After educating the patients in the Intervention Group on inhaler technique, a significant improvement in technique was observed at the 3-month follow-up assessment (p<0.05). Using a short form of the Asthma Quality of Life Questionnaire (AQLQ(S)), a significant improvement post-intervention in mean total quality of life score (p<0.05) and mean average quality of life score (p<0.05) in the Intervention Group, were demonstrated. An improvement in mean activity limitation score in the Intervention Group post-intervention was also recorded for the activity limitation subscale of the AQLQ(S) (p<0.05). On measuring changes in asthma related knowledge, attitudes and self-efficacy, using a questionnaire (KASE-AQ), a significant improvement in mean knowledge score in the Intervention Group after the intervention (p<0.05) was also shown. With regards to lung function, both vital capacity (percent FVC) and expiratory flow volumes (percent FEV1) improved significantly in the Intervention Group (p<0.05). This study therefore demonstrated that multi-faceted pharmacist interventions, including medication assessment, asthma education, education on inhaler technique and the provision of medication aids in the form of spacers, can significantly improve the management of asthma patients and improve their well-being and quality of life.

Thesis (MBA)--Stellenbosch University, 2011.
This study analyses the effects of generic medicine competition on the market share growth and pricing of originator brand medicine in the South African private pharmaceutical market. The study is based on five years (2005 to 2011) of IMS Health market share data for 39 originator brand drugs that have been exposed to competition from generic substitutes from 2001. The results show that, for all the drug molecules included in the study pooled together, the price of an originator brand medicine relative to the weighted average price of its generics has a significant negative impact on the change of its market share. Results for the molecules pooled according to anatomical classes, as well as each molecule separately, show that in four out of the nine classes represented in the study and nine out of the 39 molecules the relative price of the originator brand medicine had a significant negative impact on its change in market share. The manufacturers and marketers of generic medicines would be well advised to offer their medicines at significantly discounted prices compared to the originator brands, as the results suggest that the market penetration of the generic product may depend heavily on the price the generics are offered at. Investigations into the prices of the originator brands in relation with the number of generic equivalents in the market show that the number of generics available in a specific market has a significant positive impact on the relative price of originators, thereby making originators relatively more expensive compared with their generic competitors, while at the same time the results show that the absolute price of the originator brand medicines declines as the number of generic equivalents in the market increases. This indicates that, from a policy perspective, reducing the barriers to entry for generic medicine once originator patents expire may have a significant role to play in reducing the cost of pharmaceutical drugs in the South African market.

Thesis (MBA)--Stellenbosch University, 2004.
ENGLISH ABSTRACT: HIV infection has increased sharply in SA over the past decade, from almost zero to a level where between 4-6 million citizens are estimated to be HIV positive (i.e. around Il percent of the total population). Given the considerable lag and link between the HIV and AIDS epidemic, the mortality consequences of this exponential increase in HIV infection over the 1990s are more or less matter-of-fact over the coming decade; even drastic interventions can do little to avoid this reality, albeit possibly impactingfurther beyond. The health care industry, and more specifically the pharmaceutical industry, is the only industry that can have a direct impact on the outcome of the epidemic in terms of provision of antiretroviral drugs. More importantly, the decision by multinational companies to provide voluntary licensing to local SA pharmaceutical manufacturers for the manufacturing of generic ARVs has gone a long way into achieving the World Health Organisations' objective of providing an ARV cocktail for less than $1,00 per day. The mam aim of the study is to establish and study the micro-economic effect of HIV/AIDS on a South African pharmaceutical manufacturer and to evaluate their HIV/AIDS Policy with the framework of the mV/AIDS & SID Strategie Plan for South Africa 2000-2005. Both qualitative and quantitative methods were used to obtain data from various key informants, manufacturers and market survey companies. The analysis of quantitative data was done using Excel software and a descriptive analysis method was used to interpret the data. The key findings from the study are that Aspen Pharmacare will experience a 20,8 % HIV prevalence rate in 2005, which will progressively increase to a 25,6 % level in 2015. This prevalence level will be severely experienced in the skilled, semi-skilled and unskilled employment of the company during the 2010 period and will start to stabilise in the latter part of 2015. The AIDS prevalence in the company will increase from a 2,0 % level in 2005 to a 4,4 % level in 2015. This increase is largely due to the increase in the prevalence rates in the semi-skilled and unskilled employees. At a senior management level the forecasted number of employees that will have clinical AIDS after 2010 is between 6 and 8. This clearly indicates that mv/AIDS prevalence at this level is independent of race and is lifestyle dependent. If the company were to have the full responsibility for the provision of benefits, based on the current expected employee benefit structures, the direct cost to company would add 10 % to salary and wages by 2005 and around 20 % by 2010. Indirect costs to company, such as recruitment and training, increased labour turnover, lost skills and intellectual property, etc. are estimated to be 2,5 % by 2005 and 5 % by 2010. With the high HIV/AIDS prevalence rates, especially amongst the unemployed, companies will have to carry the costs of their mv/AIDS patients for longer and register then with Aid for AIDS when it becomes too costly. More importantly employers will have to investigate the cost implication of assisting employee dependents, as this will have a direct impact on the morale of the employees. Aspen Pharmacares' mv/AIDS Policy goes beyond the requirements of the mv/AIDS Strategic Plan for SA in terms of the legal and social requirements. The company also has a Corporate Social Investment division that assists many NGOs, clinics, hospitals and communities. Based on the intellectual property, the pharmaceutical competencies and the continuous dialogue that exists between the pharmaceutical industry and the department of health, the researcher concludes, that pharmaceutical companies have an advantage over nonpharmaceutical companies in dealing with the mv/AIDS issues. The paper concludes by suggesting recommendations that companies can adopt to ensure that their mv/AIDS policy can form a significant component of their skills retention strategy.
AFRIKAANSE OPSOMMING: MIV infeksie het skerp gestyg in SA oor die laaste dekade, vanaf amper geen tot 'n vlak waar tussen 4-6 miljoen inwoners beraam word om MIV positiefte wees (minstens 11% van die totale bevolking). Gegee die aansienlike vertraging en skakel tussen die MIV en VIGS epidemie, word die eksponensiële toename in die sterfte syfer as gevolg van MIV infeksies gedurende die jare negentig as vanselfsprekend aanvaar in die komende dekade. Selfs ingrypende veranderinge kan min doen om hierdie katastrofe te keer. Die gesondheidsorg industrie, en meer spesifiek die farmaseutiese industrie is die enigste industrie wat 'n direkte slag kan slaan om die uitkoms van die epidemie te beinvloed, in terme van voorsiening van antiretrovirale medisyne. Die besluit van die multinasionale maatskappye om vrywillige lisensiëring aan plaaslike farmaseutiese maatskappye te bied, vir die vervaardiging van generiese antiretrovirale medisyne, is een stap vorentoe om by die doelwit van die Wereld Gesondheidsorg Organisasie se doelwit van die voorsiening van 'n daaglikse toediening van antiretrovirale medisyne van minder as $1.00 per dag. Die primêre doelwit van hierdie projek is om te bepaal wat die mikro-ekonomiese effek van MIV/VIGS op 'n Suid Afriakaanse farmaseutiese vervaardiger is en hul MIV/VIGS beleid te evalueer binne die raamwerk van die MIV/VIGS en SOS Strategiese Plan vir SA 2000-2005. Beide kwalitatiewe en kwantitatiewe metodes is gebruik om data te verkry vanaf verskeie bronne, vervaardigers en marknavorsings maatskappye. Die kwantitatiewe inligting was geanaliseer deur gebruik te maak van "Excel" sagteware en 'n beskrywende analitiese metode was gebruik om die data te interpreteer. Die hoof bevindinge van die studie is dat Aspen Pharmacare 'n MIV infeksie vlak van 20.8 % in 2005 sal ondervind, wat progressief sal toeneem tot 25,6 % in 2015. Hierdie infeksie vlak sal in die geskoolde, semi-geskoolde en ongeskoolde arbeid die ergste voorkom gedurende die 2010 periode en sal dan stabiliseer in die latere gedeelte van 2015. Die VIGS infeksie vlak in die maatskappy sal toeneem vanaf 2,0 % in 2005 tot 'n 4,4 % in 2015. Hierdie toename kan toegeskryf word aan die toename in die infeksie vlakke van die semi-geskoolde and ongeskoolde arbeid. Op die senior bestuurs vlak word beraam dat tussen 6 en 8 werknemers VIGS onder lede sal hê na 2010. Hierdie beraming toon duidelik aan dat MIV/VIGS op hierdie vlak onafhankilik van kleurgroup is en direk leefstyl verwant is. Gebaseer op die huidige verwagte werknemer voordele struktuur, en die feit dat die maatskappy volle verantwoordelikheid sou aanvaar vir die voorsiening van voordele, word beraam dat die direkte koste as gevolg van MIV/VIGS 'n toename van 10 % in 2005 en 20 % in 2010 by salarisse en lone sal voeg. 'n Toename van 2,5 % in 2005 en 5 % in 2010 word beraam vir indirekte koste (werwing van personeel, opleiding, ens.)as gevolg van MIV/VIGS. Met die hoë MIV/VIGS infeksievlakke, veral onder werkloses, sal maatskappye die kostes vebonde aan hul MIV/VIGS werknemers vir langer moet verduur en dan later sulke werknemers registreer by "Aid for AIDS" indien dit onbekostigbaar word. Belangriker is die feit dat werknemers die koste implikasie bepaal in die verband, omdat dit 'n direkte invloed sal hê op werknemer selfvertroue. Aspen Pharmacare se MIV/VIGS beleid bied meer as die wettige en sosiale vereistes soos uiteengesit in die MIV/VIGS en SOS Strategiese Plan vir SA 2000-2005. Die maatskappy het ook 'n Korporatiewe Maatskaplike Beleggings afdeling wat 'n bydra lewer by NGOs, klinieke,hospitale en gemeenskappe. Gebaseer op die intelligensie eiendom, die farmaseutiese bekwaamheid en die aanhoudende gesprekvoering wat bestaan tussen die farmaseutiese bedryf en die department van gesondheid, oortuig die navorser dat farmaseutiese maatskappye 'n voordeel het bo nie-farmaseutiese maatskappye in die hantering van die MIV/VIGS strydvraag. Hierdie studie sluit af met aanbevelings wat maatskappye kan toepas om te verseker dat hul MIV/VIGS beleid 'n betekenisvolle komponent van hul bekwaanheids retensie strategie is.

Bibliography: pages 143-144.
This thesis researches the "Just-in-Time" (JIT) in the production philosophy and its application pharmaceutical industry in South Africa. While JIT is widely accepted in Japan and is gaining some acceptance in the USA, it is virtually unknown in South Africa. Studies of the JIT philosophy in the world at large have been largely confined to the use of JIT in repetitive mass production environments, such as is found in the motor industry. No prior studies have been conducted on the application of the JIT philosophy to the pharmaceutical industry in South Africa. The objectives of the thesis are: •To properly define JIT and establish the extent and nature of its components, having researched existing JIT systems in use throughout the world. •To investigate the application of JIT in South Africa with particular reference to the pharmaceutical manufacturing industry. •To determine to what extent JIT and Manufacturing Resource Planning (MRP II) can complement each other in improving productivity in the South African pharmaceutical industry. The techniques used in carrying out the thesis work included literature searches, attending seminars and conducting surveys, whilst the author participated in a JIT pilot project in the pharmaceutical industry.

iv ABSTRACT This research study was the first to investigate the nature of time-use behaviour of the South African Clinical Research Associates (CRA’s) and Clinical Trial Managers (CTM’s). The study determined the relative polychronicity of project members in clinical trials in South Africa and identified possible non-alignment in the approaches and expectations between managers of clinical research projects and that of their project staff members. The study assumed that the clinical trial project environment is monochronic by nature. Information about a possible mismatch in expected temporal orientation of project staff and real temporal orientation of project staff would constitute grounds for adaptation of project management execution guidelines and staff selection processes for CRA’s and Managers of clinical trials. Quantitative data were collected through the Inventory of Polychronic Values measuring instrument from a sample of the total registered membership base of the South African Clinical Research Association by means of a web based questionnaire. The study analysed the relationships between the following three constructs of relevance: 1. CRA’s own personal preferences for time-use, and 2. CRA’s perceptions of what time-use behaviour their direct managers expect from them, and 3. Managers’ expectations for the time-use behaviour of CRA’s. CRA’s were found to be relatively monochronic in their work behaviour towards time-use and Managers to be more polychronic than CRA’s. Within each group a range of timeuse opinions and preferences were found. Within the constraints of sample size, Cultural Heritage and Age were the only demographic variables found to exert significant influence on the dependent variables in this study. A good alignment was found between the CRA’s perceptions of the time-use behaviours expected from them and the Managers’ expectations for time-use behaviour. The results of this study relate to complementary role differentiation between monochronic and polychronic people in project execution and management.

The project describes the action research implementation, and evaluation of learning, of a service-learning component in a second year undergraduate organic chemistry course. The research aims to explore the learning that takes place in a service-learning context while utilizing an action research methodology within the critical theory paradigm. This occurs in response to the world-wide call for Higher Education to produce people with civic competencies and responsiveness to the society in which they live (Boyer 1996). Educating young Chemists to see the importance of their knowledge and their responsibilities in society is an important pedagogical step in the effort to cross boundaries and make connections between people communities (Eyler and Giles 1999). The goal of this project was to explore and categorize the learning that takes place in a service-learning context and discover how these areas of learning impact the awareness of the parties involved with regard to the discipline of chemistry as well as social issues. The project makes use of Kolb‘s (1984) Experiential Learning Theory, and Eyler and Giles‘ (1999) categories of learning in service-learning and results indicate that service-learning can be a powerful pedagogical tool to increase learning in chemistry as well as in the areas of critical thinking, personal and social development, reflection and citizenship. Students‘ perceptions of themselves, their discipline and their responsibility to society were transformed by their experience of service-learning in their undergraduate chemistry course.

The pharmaceutical industry must worry about managing pharmaceutical waste as it poses a health risk to human beings and its presence in the environment can also contribute to loss of biodiversity. Ngwuluka, Ochekpe, and Odumosu (2011: 11259) state that “Pharmaceuticals, though used to treat and manage diseases, are poisons, which justify the growing concerns about their presence in the environment.” Various forms of pharmaceutical waste exist, Ngwuluka et al. (2011) identified the following forms of pharmaceutical waste: Expired dosage forms, non-reworkable formulations, spilled pharmaceuticals, rejected active pharmaceutical ingredients, expired active pharmaceutical ingredients, and wastewater resulting from the water used for process operations during manufacturing and could come from the water used to clean equipment, pipes and floors, and would contain amongst other materials, chemicals and active pharmaceutical ingredients (APIs). A review on the pharmaceutical industry and the progress they have made in environmental management by generating health, safety and environmental programs, preventing pollution, waste minimization, recycling and reusing materials, investing in projects and facilities to ensure environmental sustainability have been established (Berry & Rondinelli, 2000). Dr. Reddy’s Laboratories is an Indian based pharmaceutical company which imports, markets and sells medicines in South Africa. Dr. Reddy’s has plans to set up a manufacturing plant in South Africa. The purpose of this study is to research waste management practices at Dr. Reddy’s plant in India and to draw parallels between India’s and South Africa’s waste legislation. This is to enable Dr. Reddy’s to review all aspects of its waste management systems, in order to revise where necessary and to improve the overall achievement of its waste management objectives in order to become a more sustainable organisation and to meet South African Waste legislation before setting up a plant in South Africa. 3 ii. Objective of the Evaluation Report The purpose of this research is to evaluate and analyse the development and implementation of a waste management system in a pharmaceutical company, specifically Dr. Reddy’s Laboratories. This is primarily to enable the company to review and analyse all aspects of waste management pertaining to pharmaceutical manufacturing and to revise or improve where necessary to ensure adherence to waste regulations as outlined by government. The following research goals have been also been identified:  To identify and describe waste management practices at Dr. Reddy’s Laboratories, on the inherent assumption by the researcher that the company has a successful waste management strategy that would need to be reviewed to identify areas of improvement before expanding manufacturing facilities into South Africa.  To evaluate, assess and compare similarities and/or differences between the identified South African Legislation for Waste Management with those identified during research conducted at Dr. Reddy’s iii. Importance of the Research Conducted Waste Management is important in that it not only removes from the environment, substances that can be harmful to humans and animals but it also enables an organisation to be more sustainable. According to Seadon (2010: i) “Integrated waste management is considered from a systems’ approach, with a particular emphasis on advancing sustainability”. The study will provide guidance to senior management, shop floor managers and employees who work in Dr. Reddy’s manufacturing plants as well as overall employees at Dr. Reddy’s on how to successfully implement a Waste Management programme to enhance sustainability at the organisation and realise the benefits to the organisation of being more sustainable. Weybrecht (2010) identified the following benefits that companies could gain by adopting sustainable waste management practices: reduced costs, resource preservation, keeping up with legislation, enhanced reputation, business differentiation from competitors, and attraction and retention of quality employees, and customer need satisfaction amongst many other benefits. This research needs to address the gap in analysing waste management practices (with more emphasis on waste treatment, waste minimisation, re-use, recycling and disposal), and implementation and understanding of waste management in the pharmaceutical industry as prior research was done mostly in other chemical industries and not to a large scale in the pharmaceutical industry. South African Waste Legislation, Indian Waste Legislation (as Dr. Reddy’s is based in India), as well as International Pharmaceutical Waste Management Guidelines, and International Pharmaceutical Good Manufacturing Practices provide a framework and benchmark of leading pharmaceutical waste management practices that can guide Dr. Reddy’s Laboratories’ leadership into integrating their waste management practices into their plans of setting up a manufacturing plant in South Africa. 5. Research Methodology This is evaluation research in the form of a case study and the data collection method employed is the conduction of a survey through questionnaires. The evaluation research also involves a document analysis of the organisation’s 2011 and 2012 annual reports, Dr. Reddy’s 2010 Sustainability Report as well as literature compiled by the organisation’s Corporate Communications Division. The research would also include review of existing literature on waste management. v. Structure of Dissertation This dissertation consists of three sections. Section 1: The Evaluation Report The section introduces the research area, provides the objectives of the research, provides contextual background information and describes the rationale for conducting the research. This section further describes Dr. Reddy’s waste management practice as outlined in relevant company documentation; it is also intended to highlight the specific waste management processes that were followed in the formulation and implementation of the waste management strategy. This section further describes the sample and presents the results of the survey, where the results are collated and reviewed in the context of the criteria set in the South African Waste Legislation, Indian Waste Legislation, as well as in International Pharmaceutical Waste Management Guidelines, and International Pharmaceutical Good Manufacturing Practices. The overall findings of this case study suggest that although management at Dr. Reddy’s are satisfied with waste management practices and results achieved at it manufacturing plant, there is however dissatisfaction amongst employees who believe the organisation has not successfully disseminated information and sufficiently trained them on waste management policies, processes and practices. There is therefore a desire amongst employees to be trained and to see the company improve on its waste management processes, this desire is a very important attribute as it indicates that employees at Dr. Reddy understand and are committed to the importance of waste management. Future research should be conducted to measure the legal impact of non-compliance to legislation governing waste management in the pharmaceutical company. Section 2: Literature Review The objective of the literature review is to provide a critical assessment and evaluation of previous research in the field of waste management in general as prior research was done mostly in other industries and not to a large scale in the pharmaceutical industry. The literature review evaluates the key elements of an effective waste management strategy implementation and is followed by a review of literature pertaining to the description of Pharmaceutical waste. Section 3: Research Methodology This section presents a description of how the work in this research was conducted. It presents the research process followed in compiling this case study, represented by the aims and objectives, research methodology and design, data collection techniques and data analysis.

Thesis (MBA)--Stellenbosch University, 2012.
Analgesics are the medication most-generally used by modern society. The pain management market has therefore experienced substantial growth over the last few years. This research report aims to provide a critical review of pain management in the pharmaceutical market in South Africa, in order to establish and evaluate the most significant growth factors. This research report provides an overview of the history of pain, the basic physiology of pain and pain classification systems. There are three categories of analgesics - opioid analgesics, non-opioid analgesics and adjuvant analgesics. These categories of analgesics have been analysed according to the most generally-used MIMS pharmacological classification system referring to the analgesic therapeutic classes. These are narcotic analgesics, analgesics and antipyretics, combination analgesics, others such as tramadol and musculo-skeletal agents which consist of NSAIDs and COX inhibitors. Growth over the last four years (from August 2009 to July 2012) will be determined by analysing data per molecule, per product and per manufacturer. Splits between branded and generic drugs will also be analysed. Top prescribers by healthcare professionals will be examined, analysing scripting data from ImpactRx, which covers 85% of the private market data nationally. There are currently approximately 41 analgesic molecules in the assessed pain market which has produced 738 analgesic products. The analgesic market (worldwide and in South Africa) has seen the launch of only a few new drugs. New molecules of the same drug class or family have been launched, but in effect they can be viewed as mere line extensions with claimed reduction in side effects, advanced delivery times or improved efficacy. Two new molecules have been launched in the South African market in the narcotic analgesic class, (oxycodone and hydromorphone), however these molecules have been available internationally for years. Accelerated growth of the pain management market has mainly been met by combination analgesics, which in essence are not new, but rather a combination of different active ingredients or new drug delivery systems. The impact of product withdrawals on market share is also evaluated. The development and acceptance of generics are highlighted as key contributing factors in the growth of the analgesic market. Important to note is that generics often compete in their own generic market share. This may be the reason why the generic market does not show a significant increase over branded products. Another significant trend evident in the increased acceptance of generics, is that manufacturers, in order to keep market share, may choose to produce their own generic medication after their branded products patent has expired. Pain is one of the main reasons why patients seek medical attention and it is the physician’s ethical responsibility to treat patients and provide them with effective pain relief medication. The WHO analgesic ladder as a guideline for treating pain has proven to be effective after 25 years in practice. It is forecasted that an increase in the narcotic analgesic class will be noted. Pain is heavily undertreated worldwide and in South Africa, Increased awareness, education, new advanced research and knowledge may help to address this dilemma.

Thesis (MTech (Environmental Health))--Cape Peninsula University of Technology, 2011.
Pharmaceuticals have been formulated to influence physiological systems in humans, animals, and microbes but have never been considered as potential environmental pollutants by healthcare professionals. The human body is not a barrier to chemicals, but is permeable to it. Thus after performing their in-vivo functions, pharmaceutical compound introduced into the body, exit mainly via urine and faeces. Sewage therefore contains highly complex mixtures of chemicals in various degrees of biological potency. Sewage treatment works including those in South Africa, on the other hand, are known to be inefficient in removing drugs from sewage and consequently either the unmetabolised pharmaceutical compounds or their metabolites emerge in the environment as pollutants via several trajectories. In the environment, the excreted metabolites may even undergo regeneration to the original parent molecule under bacterial influence, resulting in "trans-vivo-pharmaceutical-pollution-cycles". Although all incinerators are known to generate toxins such dioxins and furans from the drugs they incinerate, all the medicines disposed by the hospitals under research, were incinerated, as the preferred option of disposal. The incineration process employed was found to be environmentally unsafe. Expired and unused medicines which the general public discard as municipal solid waste become landfilled. Because many landfill sites are not appropriately engineered, the unwanted drugs landfilled therein, leach into the surrounding ground water, which is the influent source of water treatment plants. Water treatment plants, including those in South Africa, are also inefficient in eliminating pharmaceutical compounds, releasing them in sub-therapeutic concentrations into potable tap water as pollutants, the full effects of which are yet to be determined.

Medication errors are becoming problematic in both hospital and outpatient settings worldwide. Inappropriate use of medication can cause harm to the patient and maintaining high levels of quality patient care is essential to protect all patients. Clinical pharmacy practice contributes to improved patient care by optimising medication therapy; and promoting health, wellness and disease prevention. The involvement of a pharmacist at a ward level has been shown to improve patient care; reduce mortality and morbidity rates; decrease healthcare costs; minimise medication errors; and improve outcomes of drug therapy. However, clinical pharmacy is a fairly new practice in South Africa and there are limited studies available. This study aimed to evaluate the perceived benefits of a ward-based pharmacist on the provision of pharmaceutical care to patients in a hospital setting and to consequently implement a ward-based pharmacy service. The objectives of the study were: (1) to assess, via a questionnaire, the perceptions and attitudes of medical practitioners and nurses to ward-based pharmacy prior to and after implementation of a ward-based pharmacy service, (2) to implement a ward-based pharmacy service in a selected hospital ward; (3) to document and analyse the nature of the work and activities that a ward pharmacist undertakes, and (4) to document and analyse the frequency and nature of ward pharmacist interventions. The study was conducted in a surgical ward of a private hospital in the Eastern Cape. The study design was an intervention study, using a mixed-methods design, with a convergent approach. A convenience sample of 106 patients was obtained over the eight week study period. Participation was voluntary and confidentiality was maintained at all times. Four data collection tools were used during the study and a pilot study was conducted to ensure their validity and reliability. The quantitative data was analysed statistically while the qualitative questions were analysed through coding the various responses. The results of the study showed that medical practitioners and nurses of a surgical ward had a positive attitude towards ward pharmacy both prior to and after the implementation of a ward pharmacy service. There were ward pharmacist interventions made in 50% (n=106) of the patients who participated in the study. A large percentage (57%; 50; n=87) of the ward pharmacist interventions were pharmacist-initiated interventions to optimise patient care while prescribing errors (51%; 19; n=37) were the most commonly occurring medication error. The majority of the medication items involved in the interventions (34%; 34; n=101) were related to the anti-microbial medication class. Overall, there was a 73% (36; n=49) acceptance rate of the ward pharmacist interventions that were made to both the medical practitioners and nurses. There were a number of factors that had a significant relationship with a ward pharmacist intervention being required which included: (1) number of medication items (p=0.001; Chi² test; p<0.0005 Student’s t-test), (2) length of hospital stay (p<0.0005; Chi² test), (3) presence of one or more chronic disease states (p=0.003; Chi² test) and (4) presence of one or more allergies (p=0.028; Chi² test). The ward pharmacist interventions were shown to be of clinical significance and to have a positive impact on the patients concerned. It can be concluded that the ward pharmacy service was beneficial to the patients, medical practitioners and nursing staff.

Thesis (PhD)--University of Stellenbosch, 2004.
ENGLISH ABSTRACT: The Gamsberg Zn-Pb deposit is a metamorphosed and multiply deformed sediment-hosted base metal deposit in the central Namaqua Province of South Africa. The deposit is hosted by the Bushmanland Group, a late Palaeoproterozoic (2000-1600 Ma) supracrustal succession of quartzite, metapelitic schist and interbedded metavolcanic rocks. Mineralisation occurs within the central part of the Gams Formation, a heterogeneous sequence of metamorphosed metalliferous sediments and fine-grained organic-rich shales. The ore horizon is subdivided into a lower unit of metapelite-hosted ore, an intermediate layer of phosphorite-hosted ore, and an upper unit of banded garnet-apatite ore. The ore body is enveloped by unmineralised silicate-, carbonate- and oxide-facies metalliferous rocks, which originally represented mixtures of Fe-Mn-rich hydrothermal precipitates, authigenic carbonate, and variable concentrations of detrital material. Based on mineralogical and geochemical characteristics, the metalliferous host rocks are subdivided into iron formations, coticules, Fe-Mn silicates, impure marbles and barite/Ba-rich quartzite. Minerals of the Gams Formation mostly represent solid solution between the Fe and Mn end-members of garnet, pyroxene, pyroxenoid, amphibole, olivine, spinel and ilmenite. Calcium-rich rock types are a typical feature and characterized by the occurrence of manganoan calcite, clinopyroxene, andradite-rich garnet and titanite. A successive increase in the (Mn+Ca):Fe value of rocks and minerals is evident with increasing distance from the ore horizon. Amphibole is restricted to Fe-rich ore-bearing assemblages, whereas orthopyroxene, clinopyroxene, Fe-rich pyroxenoid and olivine are present in intermediate assemblages, and Mn-rich rhodonite and pyroxmangite in the most manganiferous assemblages. These variations are mimicked by an increase in the Mn:Fe value of coexisting garnet and ilmenite group minerals with increasing distance from ore. LA-ICP-MS analyses have been used to constrain the REE patterns of garnet and apatite. In the ore-body, these minerals display a positive Eu anomaly, which is interpreted to reflect a distinct hydrothermal signature. In contrast, garnet and apatite in unmineralised metalliferous rocks display nil or a negative Eu anomaly. Primary features of the Gams Formation, such as REE patterns, the banded nature of garnet-apatite ore, the presence of diagenetic apatite nodules, and the distribution of the redox-sensitive elements Ba and Mn have been used to constrain palaeo-environmental conditions. The results indicate that metapelitehosted ore has been deposited in a stratified ocean that was characterised by anoxic bottom waters and precipitation of Fe and Zn sulphides into organic matter-rich shales. These rocks were superceded by phosphorite-hosted ore, garnet-apatite ore and metalliferous host rocks that developed in a suboxic to oxic environment. The large size of the deposit, the internal lamination of the ores and the predominance of sphalerite and barite are consistent with a vent-distal setting and precipitation of the ore-forming constituents from dense and reduced hydrothermal fluids, which originated due to reactivation of dormant growth faults. Collectively, the geological evidence indicates that Gamsberg is bridging the gap betweenthe SEDEX and BHT classifications. The relationships demonstrate that differences between these two classes of sediment-hosted Zn-Pb deposits are predominantly related to environmental conditions within localised third order basins and not to fundamental differences in ore-forming processes.
AFRIKAANSE OPSOMMING: Die Gamsberg Zn-Pb afsetting is ‘n meerfasig vervormde en gemetamorfiseerde sedimentgesetelde onedel metaal afsetting in die sentrale Namakwa Provinsie van Suid Afrika. Die afsetting word geherberg deur die Boesmanland Groep, ‘n laat Paleoproterosoïse (2000 – 1600 Ma) bokors-opeenvolging van kwartsiet, metapelitiese skis en tussengelaagde metavulkaniese gesteente. Mineralisasie word gevind in the sentrale deel van die Gams Formasie. Die Gams Formasie is ‘n heterogene opeenvolging van gemetamorfiseerde metaalhoudende sediment en fynkorrelrige organiese skalie. Die erts horison word onderverdeel in ‘n onderste laag van metapeliet-gesetelde erts, n sentrale laag van fosforiet-gesetelde erts, en ‘n boonste laag van gebande granaat-apatiet erts. Die erts-liggaam word omhuls deur ongemineraliseerde silikaat-, karbonaat- en oksied-fasies metal-ryke rotse. Hierdie gesteentes word geinterpreteer as oorspronklike mengsels van Fe-Mn-ryke hidrotermale partikels, outigeniese karbonaat, en verskeie hoeveelhede detritale materiaal. Gebaseer op mineralogiese en geochemiese kenmerke word hierdie rotse onderverdeel in ysterformasies, „coticules“, Fe-Mn silikate, onsuiwer marmer en barite/Ba-ryke kwartsiet. Minerale van die Gams Formasie form meestal soliede oplossingsreekse tussen die Fe en Mn endlede van granaat, pirokseen, piroksenoid, amfibool, olivien, spinel en ilmeniet. Kalsium-ryke rots tipes is ‘n tipiese kenmerk van die Gams Formasie en word gekenmerk deur mangaan-ryke kalsiet, klinopirokseen, andradiet-ryke granaat en sfeen. Daar word ‘n stapsgewyse vergroting van die (Mn+Ca):Fe verhouding in gesteentes en minerale gevind met toeneemende afstand van die erts horison. Amfibool is beperk tot Fe-ryke ertsdraende gesteentes, ortopirokseen, klinopirokseen, Fe-ryke piroksenoid en olivien tot intermediêre gesteentes, en Mn-ryke rodoniet en piroksmangiet tot Mn-ryke gesteentes. Hierdie variasies gaan gepaard met vergroting van die Mn:Fe verhouding in granaat en ilmeniet-groep minerale met toeneemende afstand van die erts. LA-ICP-MS analises was gebruik om die skaars-aarde element patrone van granaat en apatiet te bepaal. In die erts-liggaam wys hierdie minerale ‘n positiewe Eu anomalie, wat geinterpreteerd word as ‘n hidrotermale kenmerk. In ongemineraliseerde gasheer gesteentes wys granaat en apatiet geen of ‘n negatiewe Eu anomalie. Primêre kenmerke van die Gams Formasie, soos skaars-aarde patrone, the gebande voorkoms van granaat-apatiet erts, die teenwoordigheid van diagenetiese apatiet knolle, en die verspreiding van die redox-sensitiewe elemente Ba en Mn, was gebruik om afleidings oor die paleo-omgewing te maak. Die resultate het gewys dat metapeliet-gesetelde erts afgeset was onder anoksiese bodem water deur presipitasie van Fe en Zn sulfiedes in organiese skalie. Hierdie erts gaan oor in fosforiet-gesetelde erts, granaat-apatiet erts en metaal-ryke gasheer gesteente wat in ‘n suboksiese tot oksiese omgewing ontstaan het. Die grootte van die afsetting, die interne gelaagdheid van die erts, asook die teenwoordigheid van sfaleriet en bariet dui op ‘n distale omgewing relatief tot die hidrotermale bron en presipitasie van die ertsuit digte en gereduseerde hidrotermale vloeistowwe, wat ontstaan het deur die heraktiveering van rustende groeiverskuiwings. Gesaamentlik bewys die geologiese kenmerke van Gamsberg dat gemetamorfiseerde SEDEX en Broken Hill-tipe mineralisasie binne die perke van ‘n enkele afsetting kan voorkom. Die geologiese verhoudings dui aan dat verskille tussen hierdie twee tipes van sedimentgesetelde afsettings meestal veroorsaak word deur omgewings-toestande binne in gelokaliseerde derde orde komme en nie deur fundamentele verskille in ertsvormende prosesse nie.

>Magister Scientiae - MSc
The pharmaceutical manufacturing sector operates within a highly regulated environment, with companies accountable to South African statutory bodies. The responsible pharmacist (RP) is responsible for their company’s adherence to the legislation requirements. Whilst the Pharmacy and the Medicines Acts outline the RP’s, there is no mandatory training requirement prior to registration as an RP, nor thereafter. This study investigated the role and competencies required of newly registered RPs in meeting their professional responsibilities in the pharmaceutical manufacturing sector. An online survey questionnaire elicited responses from RPs (n=102) about views and perceptions pertaining to their role and responsibilities. In addition, semi-structured interviews were conducted with statutory (n=3) and non-statutory representatives (n=5). Survey findings indicated that the majority (89,5%) of RPs felt competent and that they possessed the necessary skills and training. Almost two-thirds of respondents (63,2%) were experienced RPs who shared some reservations, that RPs may be excluded from far-reaching decisions with potential consequences for the company and patients. They added that RP performance monitoring was not regular, which may indicate that some companies view the RP as an appointment of convenience. The majority of respondents (89,5 %) were in favour of the development of training guidelines Findings from the semi-structured interviews indicated that RPs were not fully aware of their scope of duties and the implications thereof. The interviewees were also concerned that some companies, by not giving the RP role the level of importance and authority it required, were practicing tokenism. Further, that not all RPs had the necessary in-depth knowledge of the applicable laws, regulations, guidelines and codes. A competency framework for newly appointed RPs is needed to streamline their roles and responsibilities in the pharmaceutical manufacturing sector

Emerging organic contaminants (EOCs) have been the focus of global environmental research for over three decades. EOCs have caused widespread concern due to their extensive use. As EOCs were designed to correct, enhance or protect a specific physiological, their target effects in humans and/or farm stocks are relatively well known and documented. However, there is limited knowledge about their unintended effects in the environment. To address the occurrence, distribution and fate of EOCs in the environment, efficient and reliable analytical methods are needed. The relatively low concentration, high polarity, and thermal lability of some EOCs, together with their interaction with complex environmental matrices, make their analysis challenging. Sample preparation followed by GC or HPLC separation and mass spectrometry (MS) detection has become the standard approach for evaluating EOCs in environmental samples. Physicochemical properties of EOCs range from highly water-soluble (hydrophylic) to highly water-insoluble (hydrophobic). Two groups of these EOCs were considered for study in this work. Pharmaceutical and personal care products (PPCPs) were comprehensively studied in five wastewater treatment plants and their receiving watersheds in Amathole districts in Eastern C ape, South Africa. PPCPs have been widely reported in wastewater influents, effluents, receiving rivers and biosolids, but reports of their occurrence in all these matrixes have been limited by the difficulty of analysis. Therefore, a comprehensive validation of methods was carried out on the influents, effluents, sludge and soil from the irrigated golf course where the effluent of one of the study sites was being used for over three decades now for irrigation. In all, thirteen PPCPs from five therapeutic groups were selected for study in this work because of their administering rate and availability of analytical instrument. Good limit of detection (LOD) and limit of quantification (LOQ) were achieved for the method used. The LOD for the aqueous Three different technologies were employed for the treatment of wastewater in the five selected wastewater treatment plants (WWTPs) and study was carried out to evaluate their ability to eliminate the selected compounds from the influents to the effluents using statistical analysis (ANOVA) at p<0.05 on the percentage removal rate across the three plants. The results had shown eight of the compounds having no significant difference among the treatment operations, whereas the remaining five compounds varied significantly among the treatment technologies under investigation. Principal component analysis was performed on the concentration of PPCPs, their removal rate and also on the physicochemical and treatment operation parameters. Hydraulic retention time (HRT) had correlation coefficient, r = 0.90 with the concentration of PPCPs and removal rates. Furthermore, occurrences, seasonal variation, mean concentration distribution pattern of the compounds, and temporal evaluation of the mean concentration of the pharmaceutical compounds in the five WWTPs during one year of sampling were considered. The results revealed that five products which were diclofenac, ibuprofen, paracetamol, triclosan and diethyl toluamide (DDET) were predominant among the PPCPs in all the WWTPs. The removal efficiency was highest in caffeine with 96 percent, and the lowest was obtained with carbamazepine (4 percent). Risk quotient of the concentration of PPCPs in the effluents and receiving waters was determined to assess their chronic toxicity at three trophic levels: fish, algae and matrixes studied ranged from 0.01 μg/L to 0.25 μg/L, and the LOQ from 0.02 μg/L to 0.78 μg/L. In the solid matrixes, LOD varied from 0.01 ng/g to 0.65 ng/g, and the LOQ between 0.08 ng/g and 5.17 ng/g. Better recovery efficiency was obtained with this mixture of solvents, acetone: dichloromethane (1:1), for the recovery of the five therapeutic groups in the solid matrixes using ultrasonication- assisted techniques. The results show percentage recovery values ranging from 68.8 percent to 107.5 percent diaphian. According to the environmental risk assessment results, ibuprofen and triclosan were found to be the most critical compounds due to their high risk quotient values. These findings will, therefore, help in the future evaluation of the efficiency of different treatment technologies in the removal of various PPCPs from the wastewater and their sustainable management in the aquatic resources in Eastern Cape, South Africa. For the lipophilic organochlorine pesticides (OCPs), the limits of detection (LODs) of the tested congeners varied from 0.04 ng/g (α-BHC) to 0.49 ng/g (endosulfan sulfate) and the limits of quantification ranging from 0.22 ng/g (aldrin) to 2.17 ng/g (δ-BHC).

The subject of BIF genesis, particularly their environmental conditions and ocean chemistry at the time of deposition and their evolution through time, has been a subject of much contentiousness, generating a wealth of proposed genetic models and constant refinements thereof over the years. The prevailing paradigm within the various schools of thought, is the widespread and generally agreed upon depositional and diagenetic model(s) which advocate for BIF deposition under anoxic marine conditions. According to the prevailing models, the primary depositional environment would have involved a seawater column whereby soluble Fe²⁺ expelled by hydrothermal activity mixed with free O₂ from the shallow photic zone produced by eukaryotes, forming a high valence iron oxy-hydroxide precursor such as FeOOH or Fe(OH)₃. An alternative biological mechanism producing similar ferric precursors would have been in the form of photo-ferrotrophy, whereby oxidation of ferrous iron to the ferric form took place in the absence of biological O₂ production. Irrespective of the exact mode of primary iron precipitation (which remains contentious to date), the precipitated ferric oxy-hydroxide precursor would have reacted with co-precipitated organic matter, thus acting as a suitable electron acceptor for organic carbon remineralisation through Dissimilatory Iron Reduction (DIR), as also observed in many modern anoxic diagenetic environments. DIR-dominated diagenetic models imply a predominantly diagenetic influence in BIF mineralogy and genesis, and use as key evidence the low δ¹³C values relative to the seawater bicarbonate value of ~0 ‰, which is also thought to have been the dissolved bicarbonate isotope composition in the early Precambrian oceans. The carbon for diagenetic carbonate formation would thus have been sourced through a combination of two end-member sources: pore-fluid bicarbonate at ~0 ‰ and particulate organic carbon at circa -28 ‰, resulting in the intermediate δ¹³C values observed in BIFs today. This study targets 65 drillcore samples of the upper Kuruman and Griquatown BIF from the lower Transvaal Supergroup in the Hotazel area, Northern Cape, South Africa, and sets out to explore key aspects in BIF carbonate petrography and geochemistry that are pertinent to current debates surrounding their interpretation with regard to primary versus diagenetic processes. The focus here rests on applications of carbonate (mainly siderite and ankerite) petrography, mineral chemistry, bulk and mineral-specific carbon isotopes and speciation analyses, with a view to obtaining valuable new insights into BIF carbonates as potential records of ocean chemistry for their bulk carbonate-carbon isotope signature. Evaluation of the present results is done in light of pre-existing, widely accepted diagenetic models against a proposed water-column model for the origin of the carbonate species in BIF. The latter utilises a combination of geochemical attributes of the studied carbonates, including the conspicuous Mn enrichment and stratigraphic variability in Mn/Fe ratio of the Griquatown BIF recorded solely in the carbonate fraction of the rocks. Additionally, the carbon isotope signatures of the Griquatown BIF samples are brought into the discussion and provide insights into the potential causes and mechanisms that may have controlled these signatures in a diagenetic versus primary sedimentary environment. Ultimately, implications of the combined observations, findings and arguments presented in this thesis are presented and discussed with particular respect to the redox evolution and carbon cycle of the ocean system prior to the Great Oxidation Event (GOE). A crucial conclusion reached is that, by contrast to previously-proposed models, diagenesis cannot singularly be the major contributing factor in BIF genesis at least with respect to the carbonate fraction in BIF, as it does not readily explain the carbon isotope and mineral-chemical signatures of carbonates in the Griquatown and uppermost Kuruman BIFs. It is proposed instead that these signatures may well record water-column processes of carbon, manganese and iron cycling, and that carbonate formation in the water column and its subsequent transfer to the precursor BIF sediment constitutes a faithful record of such processes. Corollary to that interpretation is the suggestion that the evidently increasing Mn abundance in the carbonate fraction of the Griquatown BIF up-section would point to a chemically evolving depositional basin with time, from being mainly ferruginous as expressed by Mn-poor BIFs in the lower stratigraphic sections (i.e. Kuruman BF) to more manganiferous as recorded in the upper Griquatown BIF, culminating in the deposition of the abnormally enriched in Mn Hotazel BIF at the stratigraphic top of the Transvaal Supergroup. The Paleoproterozoic ocean must therefore have been characterised by long-term active cycling of organic carbon in the water column in the form of an ancient biological pump, albeit with Fe(III) and subsequently Mn(III,IV) oxy-hydroxides being the key electron acceptors within the water column. The highly reproducible stratigraphic isotope profiles for bulk δ¹³C from similar sections further afield over distances up to 20 km, further corroborate unabatedly that bulk carbonate carbon isotope signatures record water column carbon cycling processes rather than widely-proposed anaerobic diagenetic processes.

The levels of service quality at International Healthcare Distributors (IHD) have been determined. Service quality in organisations require a strong emphasis on customer service and service delivery processes. The main area of this study focuses on the need for appropriate levels and criteria of service quality that will satisfy customers of pharmaceutical distributors. Various determinants affecting service quality levels have been discussed. The nature of service quality has been outlined and customer expectation standards have been determined. Customer satisfaction versus service quality has been discussed and the consumers’ perceptions towards service quality have been identified. Obstacles to attaining service quality have been described and potential causes of service quality shortfalls have been defined. Various surveys were studied to determine the implementation of service quality dimensions in a variety of disciplines. A sample was taken from the IHD customer base and a questionnaire was designed and distributed to the customers. The questionnaire examined five dimensions, tangibility, reliability, responsiveness, assurance and empathy. There was a hundred percent response rate. The results indicated that the tangibility dimension was highest in terms of customer agreement and reliability the lowest. The results of the questionnaire have proven that two of the hypotheses are negative and one positive. Concluding remarks and recommendations were highlighted and it is evident that IHD needs to improve its level of service quality in order to meet their customer requirements.

Thesis (MScAgric)--University of Stellenbosch, 2004.
ENGLISH ABSTRACT: In the humid Graskop region of Mpumalanga Province, South Africa, there is an anomalous body of highly weathered black, manganiferous oxisols derived from dolomite. With Mn contents as high as 17%, potential large-scale Mn release is an environmental concern under current, acid generating, forestry practices. This study aims at establishing the factors which may affect the stability of the manganiferous oxisols of Graskop and in the process, investigating some of the morphological, mineralogical and chemical properties of these unique soils. Typically, the soils show a reddish, nodule-rich horizon, containing 3-4% Mn, grading through a red and black mottled zone into a black (5YR 2.5/1) apedal subsoil with >7% Mn. The Mn gradient down the profile as well as the abundant nodule content of the upper subsoil horizons implies that Mn mobilization and redistribution are active pedogenic processes. The exceptional Mn content of these soils is complemented with Fe and Al concentrations of up to 10 and 8%, respectively, and anomalously high trace element levels in particular Ni and Zn (as high as 541 and 237 mg kg-1, respectively) which are at the upper limit of cited world natural maxima for soils. The Mn mineral lithiophorite [(Al,Li)MnO2(OH)2], dominates the mineralogy of the soils with accessory amounts of birnessite, gibbsite, goethite, hematite, maghemite, kaolinite, aluminous chlorite and mica - a mineral suite reflecting that of well weathered soils. With the pH of the soil being at or close to the point of zero charge (4.5-5.5) the soils show isoelectric equilibrium. The very low buffer capacity results in metal dissolution commencing with the first increment of titrated acidity. Manganese dissolution is relatively minor considering the large potential for release and is highly overshadowed by Al release. The apparent resilience of the Mn phase to added acidity may relate to the overwhelming poise of the soils which maintains robust, oxic conditions despite the usual instability of Mn oxides at low pH. Manganese release and soil redox properties are substantially affected by drying especially in the organic rich topsoils. Using various redox analyses, evidence is shown for involvement of Mn(III)-organic complexes in the drying reactions. Using this and information gained in a real time, attenuated total reflectance Fourier transform infrared(ATR-FTIR) spectroscopic study, a mechanism is suggested which may account for the observed Mn release and the loss of Cr oxidising capacity commonly observed in dried soils. The information provided by the ATR-FTIR study showed the decrease in surface pH of a clay film, from 5 to below 2, as well as the shift in coordination nature of sorbed oxalate from a more outer-sphere association to a more inner-sphere association concomitant with the removal of free water from the clay surface. This spectroscopic evidence for these chemical changes which accompany surface drying not only provides further insight into the reactions involving Mn oxides in soils but also highlights the suitability of ATR-FTIR for real time, in situ investigation into the chemistry of the drying water interface. From these results it is concluded that Mn release from the manganiferous oxisols, under acid generation of the kind known to occur in pine plantations, is less that anticipated. On the other hand, desiccation of the topsoil results in substantial Mn release with a suggested mechanism which involves a Mn(III) intermediate.
AFRIKAANSE OPSOMMING: ‘n Onreelmatige grondliggaam van hoogs verweerde, swart, mangaanhoudende oxisols wat uit dolomiet ontwikkel het, word in die humiede Graskop streek van die Mpumalanga Provinsie van Suid-Afrika aangetref. Die hoë Mn-inhoud (tot 17%) van hierdie oxisols is van groot omgewings-belang weens die potensiële grootskaalse Mn-vrystelling onder huidige, suur-genererende bosbou praktyke. Hierdie studie beoog om die faktore wat die stabiliteit van die mangaanhoudende oxisols van Graskop affekteer, vas te stel. Tesame hiermee word die morfologiese, mineralogiese en chemiese eienskappe van hierdie unieke gronde ondersoek. Kenmerkend van hierdie gronde is ‘n rooi, nodule-ryke horison met 3-4% Mn aan die oppervlakte. Bogenoemde horison verander met toename in diepte in ‘n rooi en swart gevlekte sone wat weer in ‘n swart (5YR 2.5/1) apedale ondergrond met >7% Mn oorgaan. Die Mn gradiënt in die profiel sowel as die hoë nodule-inhoud van die boonste grondhorison dui daarop dat Mn-mobilisasie en -herverspreiding huidige aktiewe pedogenetiese prosesse in die profiele is. Fe en Al, met konsentrasies van 10% en 8% onderskeidelik, word saam met die onreelmatig hoë Mn inhoud aangetref. Baie hoë vlakke van Ni en Zn (so hoog as 541 en 237 mg.kg-1 onderskeidelik) wat hoër is as aangehaalde wêreld natuurlike maksimum waardes, word ook aangetref. Die mineralogie van die gronde word deur die Mn mineraal litioforiet [(Al,Li)MnO2(OH)2] gedomineer. Bykomstige hoeveelhede van birnessiet, gibbsiet, goethiet, hematiet, maghemiet, kaoliniet, aluminiumryke chloried en mika word ook aangetref. Hierdie minerale samestelling is kenmerkend van hoogs verweerde gronde. Met die pH van die grond in die omgewing van die punt van geen lading (4.5 – 5.5), word ‘n iso-elektriese ekwilibrium by die gronde aangetref. Die baie lae bufferkapasiteit het metaal-oplossing aangehelp wat met die eerste inkrement van titreerbare suurheid ‘n aanvang geneem het. Mangaan-oplossing is baie klein indien die groot potensiaal vir vrystelling asook die groot mate van Al-vrystelling in ag geneem word. Die skynbare teenwerking van die Mn fase tot toegevoegde suurheid, mag toegeskryf word aan diesterk ewewig van die gronde om sterk, oksiese kondisies, ten spyte van die normale onstabiliteit van Mn oksiedes by lae pH, te onderhou. Mangaan vrystelling en grond redoks eienskappe word beduidend deur uitdroging beïnvloed en veral in die organies-ryke bogronde. Deur van verskeie redoks analises gebruik te maak is daar bewyse van die betrokkenheid van Mn(III)-organiese komplekse in die uitdroging-reaksies gevind. Dit. en data ingesamel in ‘n “real time, attenuated total reflectance Fourier transform infrared (ATR-FTIR)” spektroskopiese studie, is gebruik om ‘n meganisme voor te stel wat die waargenome Mn vrystelling en die verlies aan Cr oksidasie kapasiteit (algemeen waargeneem in droë gronde) te kan verklaar. Die data verkry met die ATR-FTIR studie het ‘n afname in oppervlak pH van 5 na 2 van ‘n klei film asook die verskuiwing in koördinasie toestand van die gesorbeerde oksalaat van ‘n meer buite-sfeer assosiasie tot ‘n meer binne-sfeer assosiasie, gepaardgaande met die verwydering van vry water van die klei oppervlaktes, uitgewys. Die spektroskopiese bewyse vir die chemiese veranderinge wat die oppervlak uitdroging vergesel, gee nie net meer insig in die reaksies rakende Mn oksiedes in gronde nie maar onderstreep ook die toepasbaarheid van die ATR-FTIR vir intydse (“real time”), in situ ondersoeke na die chemie van die uitdrogende water kontakvlak. Vanuit hierdie resultate kan afgelei word dat Mn vrystelling vanuit mangaanhoudende oxisols onder suur genererende denne plantasies laer is as wat verwag is. Aan die ander kant sal uitdroging van die bogrond tot aansienlike Mn vrystelling, met ‘n verwagte meganisme wat Mn (III) as intermediêre toestand insluit, lei.

Although improving the quality of drugs is a responsibility to be shared, the generic sector of the pharmaceutical industry, as the source of the majority of essential drugs, must play a critical role in improving drug quality. One sector often overlooked is raw material manufacturers and suppliers. The quality of these materials is essential for the safety, efficacy and quality of drug products. The aim of this study was to investigate the pharmaceutical quality of generic raw materials available to manufacturers in South Africa, as well as the influence that variations in the solid-state properties of these raw materials have on the in vitro availability (dissolution) of these drugs. In order to save time and cost it is very important to choose the most suitable form of the crystalline drug substance in the initial stages of drug development. Differences in physical properties of various solid forms have an important effect on the processing of drug substances into drug products. Substantial inconsistent and questionable pharmaceutical quality were found among 135 drugs available on the South African market. In particular differences in crystal form, solubility and dissolution were seen. Worldwide regulatory agencies and national and international pharmacopoeias are relying on the dissolution test, not only for assessment of drug products, but for relevance to in vivo performance. There is still much to be done to establish dissolution testing as a harmonized regulatory quality control procedure, although the ICH initiative has moved significantly towards resolution of regulatory harmonization. Dissolution problems experienced in this study with specific generic raw materials and drug products, namely piroxicarn, oxytetracycline and mebendazole, showed that harmonization is urgently needed. Harmonization of dissolution should however not be done in isolation from other regulatory requirements, because it was found that accelerated stability testing at 40°C + 75% relative humidity for three months leads to physicochemical changes in oxytetracycline capsules and that the BP dissolution method was not able to measure the effect of these changes on the dissolution properties of the capsules. This study shows that professional judgement must he exercised in the purchase of generic drug raw materials by manufacturers. Existing techniques such as X-ray analysis, melting point measurements and especially dissolution testing can be used by manufacturers to monitor and detect variations in product quality due to changes in the solid-state properties of drugs.
Thesis (Ph.D. (Pharmaceutics))--North-West University, Potchefstroom Campus, 2004.

Using a comparative methodology the thesis analyses the patentability of pharmaceutical and related inventions in the UK and South Africa. The viewpoint adopted is that of the industry actors, who are engaged in the conception through to the commercialisation of inventions, although this perspective is measured against the concerns of wider stakeholders. Drawing, in particular, on the classical justifications of the patent system, the research identifies the attributes of an optimal patentability standard which can be adjusted as technology and the legislative landscape changes. Framing an optimal patentability benchmark as one that both promote and protect the invention, the thesis considers the elements that ground the judicial patentability decision-making process. As pharmaceutical patenting tends to be an emotive and contentious area, the interplay between the international and respective domestic patentability frameworks is also evaluated in its impact on the inventor within the pharmaceutical chain. The research then turns to investigate four individual patentability limbs as applied in the two jurisdictions. The definition of the invention and excluded subject matter is evaluated in mapping out the pharmaceutical activity and the associated research output that falls within patentable subject matter. The novelty, non-obviousness and industrial application limbs to patentability are then examined, giving particular attention to the tests used by the courts in evaluating whether an invention meets the requisite criteria. The argument is made that the courts in interpreting patentability must apply principles advancing the purpose of the patent system in arriving at decisions. A systematic and robust approach is advanced that improves repeatability and precision in arriving at patentability decisions whilst preventing subjective application of the criteria. It is suggested that the application of the tests whilst aligning with the rationale and policy of the patent system, have to make sense to the scientist working in inventive pharmaceutical activities.

Magister Pharmaceuticae - MPharm
Background: In South Africa many patented medicines are either unavailable or carry prices that most patients cannot afford. The effects of the patents systems on patient access could greatly depending on how the burden of a disease is distributed across least-developed, developing and developed countries. Method: The study based on a qualitative research method. The sample was based on a non-probability approach. The study used both primary and secondary data collection. The secondary data was critically evaluated and collected from scientific articles, company reports and internet sources, in order to obtain some better insight into the patent situation of pharmaceuticals. Interviews were conducted and analysed by selective ad open coding. Results: The South African patent system needs an examination process to evaluate patent applications. The Patent Act of 1978 meets the minimum TRIPS requirements. The South African market is unique and a small market for innovator companies therefore does not influence innovation by these companies. Conclusion: The study concluded that the key sections of the Patent Act that need further evaluation and aligning more with TRIPS flexibilities are: Compulsory License, “Evergreening”. Data Protection and Establishing an examination system. The study also concluded that the current South African Patent Act sufficiently promotes innovation within the pharmaceutical industry.

This study aimed at understanding the chemistry of the neutralization of the acid mine drainage with fly ash by considering the acid mine drainage : fly ash ratios that produce neutral and alkaline process waters.

Thesis (MTech (Quality))Cape Peninsula University of Technology, Cape Town, 2008.
The South African Government provides support to the clothing and textile industry by making funding available through programs in the Department of Science and Technology, such as the Tshumisano Technology Stations Program. The Technology Stations Program in particular supports a Technology Station in Clothing and Textiles (TSCT) at the Cape Peninsula University of Technology (CPUT), serving the needs for technology support and skills upgrading of the industry in the Western Cape, and in some instances, nationally. The TSCT testing laboratory provides testing services to small medium and large companies in South Africa at a reduced cost. The laboratory emphasises that customers should have fabrics tested before production commences. In this regard, the company will know the quality of the fabric or garment being purchased or manufactured. The laboratory technicians and assistants undergo a 'Woolworths' certification process on their test methods on an annual basis. The Woolworths certification is customer based. The laboratory is faced on a daily bases with the problem that more and more of their customers request that the facility should seek higher 'accreditation', as opposed to the current 'certification' it currently holds. The TSCT testing laboratory in addition has a responsibility to satisfy all of its customer certification and accreditation needs. Against this background, the management of the CPUT TSCT testing laboratory is now seeking accreditation from the South African National Accreditation System (SANAS) to widen the spectrum of its testing abilities. The primary research objectives of this dissertation are: To determine what the requirements are for SANAS accreditation by the CPUT TSCT testing laboratory. To determine if the CPUT TSCT testing laboratory is subject to a forced intervention for SANAS accreditation. To determine the criteria required for the CPUT TSCT testing laboratory accreditation. To determine the benefits that could be gleaned from this accreditation. To determine the effectiveness of the laboratory system, with regard to the fact that in addition to testing, the laboratory is used for teaching and learning. Descriptive research will serve as the research type, as it will describe an existing phenomena taking place. The research will be theoretical in nature and conducted in terms of both positivistic and phenomenological paradigms. Case study research will serve as research method. Data collection for the proposed research will be conducted using questionnaires. The CPUT Clothing and Textile Technology Department will serve as sampling frame, while the sample of respondents will be drawn on the basis of probability sampling. The sample will include lecturing staff, students, industry testing customers, textile test laboratory technicians, administration and support staff, all of whom are directly involved with the operation or make use of the laboratory facilities.

Master of Public Health - MPH
Twenty percent of the global population receiving antiretroviral therapy (ART) reside in South Africa (UNAIDS, 2017). Demand within the public health system, already constrained by human resource scarcities and budgetary and infrastructural challenges, is expected to increase given the estimate that only 56% of an estimated 7.1 million HIV positive people in South Africa are currently on ART (UNAIDS, 2017). Technical assistance (TA) interventions are deployed to support in-house government services to optimise services, however, rigorous studies to evaluate the impact of TA strategies are scarce.

Parkinson’s disease (PD) impairs the quality of life of patients and causes substantial social and economic burden. However the currently available symptomatic treatments, although initially effective, do not satisfactorily control the progressive disability experienced by patients with PD in the long run. In order to develop effective treatments for patients that aim to attain the desired effect with as few adverse events as possible, it is crucial to be able to follow and understand the biological mechanisms underlying the continued neural degeneration and treatment failure. The efforts to understand the precise pathway by which neurodegenerative processes proceed and the development of approaches to modulate them offers the promise to eventually enable the prevention of these neurodegenerative diseases. This dissertation focused on two potential synthetic methods to produce pharmaceutical grade Fluorodopa, ultimately to be able to produce positron emitting 18Fluorodopa in South Africa with its potential for studying neuronal mechanisms in the brain. 18Fluorodopa allows a unique almost non-invasive in vivo approach to the evaluation of neurochemical function in the human brain and its local introduction will be a valuable addition to medical research within South Africa’s borders. The successful implementation of safe and efficient non-radioactive models for Fluorodopa synthesis was achieved. The successful demonstration of locally synthesised Fluorodopa safety, as well as a low toxicity profile, both in vitro using cell cultures and in vivo in mouse models was achieved. These were both positive outcomes of objectives set out for this study. Copyright
Dissertation (MSc)--University of Pretoria, 2010.
Pharmacology
unrestricted

Magister Pharmaceuticae - MPharm
Medicines have to be regulated in an effort to monitor their quality, safety, and efficacy. The process of medicines registration is lengthy, costly, and document-heavy. Many countries have limited expertise and resources at national medicines regulatory authorities (NMRAs) and some countries have adopted unified approaches to medicines registration legislation. Harmonised guidelines and initiatives have been adopted in South Africa and the Southern African Development Community (SADC). However, there are no studies that have identified the effects of these initiatives and guidelines on major stakeholders such as the pharmaceutical industry and regulators.

Philosophiae Doctor - PhD (School of Public Health)
Access to medicines (ATM), specifically for those medicines that are related to the priority health needs of a population has been cited as a fundamental part of universal health coverage and a key element for service delivery and high-quality care. Therefore, ensuring reliable access to and appropriate use of safe, effective and affordable medicines is one of the core functions of an effective health system. With the rising demand for treatment of chronic diseases (e.g. HIV, diabetes and hypertension), ATM has increasingly received global attention. Yet as of 2011, it was estimated that at least one third of the world's population had no regular access to medicines. Globally, there is a dearth of in-depth country level evidence to influence policy responses, coupled with inadequate understanding of how pharmaceutical systems operate within broader health systems. This thesis comprises two main parts: 1) a situational analysis of the state of chronic medicines provision in the public sector in the Eastern Cape and Western Cape provinces of South Africa; and (2) an evaluation of an existing ATM model in one province. To situate this study within the ATM discourse, a conceptual framework was developed from a review of empirical and theoretical literature. The framework incorporated six ATM dimensions (availability, affordability, acceptability, accessibility, accommodation and quality) and their interplay at multiple levels including: health facility, individual, household and community levels. Then, at a health system level, the interaction of medicines (a health system building block) with other building blocks (information, financing, human resources, infrastructure and governance).

Thesis (PhD)--Stellenbosch University, 2012.
ENGLISH ABSTRACT: The discovery of lucrative diamond deposits along the west coast of Southern Africa about 1200 kilometres from the Kimberley region during the period 1908 to 1927, gave rise to a number of different theories with respect to their possible provenance. These included the transportation of diamonds from unknown sources in southern Namibia by south-flowing rivers, hidden on- and off-shore kimberlites along the coast, and transportation by west-bound rivers from the hinterland. Subsequent research has shown that the latter is the only plausible theory. The discovery of marine and coastal diamond deposits as far south as the Olifants River estuary showed that the Vaal-Orange drainage in its current form could not have been the only conduit for diamonds to the coast, and the drainage evolution of southern Africa was interpreted as comprising essentially the following two main palaeo-fluvial systems active in the formation of the world's only known diamond mega-placer deposit:  The Karoo River with its headwaters similar to those of the modern Orange and Vaal Rivers and entering the Atlantic Ocean via the present-day Olifants River;  The Kalahari River that drained southern Botswana and followed the route of the modern-day Molopo River, entering the Atlantic Ocean in the vicinity of the present Orange River mouth. An important shortcoming of the above model is that it could not account for the fact that diamond distribution along the west coast shows a marked increase in grade and average stone size at the estuaries of all the major rivers draining from the escarpment to the Atlantic between the Olifants and the Orange Rivers. The presence of fluvial diamond deposits along the courses of the Buffels, Swartlintjies, Spoeg, Horees and Groen Rivers confirms that the increased grade and diamond size at their estuaries is not a function of large bays and rougher bottom topography associated with the rivers, although these could have contributed to this phenomenon. This proves that the catchments of the rivers between the Olifants and Orange Rivers also had access to diamondiferous debris, although they were not in contact with these two major drainages. A number of researchers proposed that diamonds liberated from pre-Karoo kimberlites were moved from their primary hosts to the south-western parts of the subcontinent by Dwyka glacials. From the above it is clear that nearly a century after the discovery of diamonds along the west coast of southern Africa consensus regarding their origin had not been reached. The aim of this study was therefore to establish a model explaining the most likely sources and distribution history of the more important alluvial diamond deposits in southern Africa. The methodology comprised a study of 1878 diamonds collected from 25 alluvial and two kimberlitic sources for comparison with known similar data from 12 kimberlitic populations in southern Africa. The diamond study was supplemented by a study of sedimentary clasts from bulk gravel samples taken along the Middle and Lower Orange River as well as Scanning Electron-microscope (SEM) Analyses of garnet grains and zircon geochronology. The evidence from the study does not support the postulated existence of a former Karoo River. The surface features of diamonds, notably brown spots indicating – in the context of southern Africa - liberation from pre-Karoo kimberlites, as well as the results of Fourier Transform Infrared analyses revealed that the populations at Kwaggaskop along the Sout River, previously considered an erosion remnant of the Lower Karoo River and those occurring south of Brandvlei and Van Wyksvlei in the valley of the Sak River, previously considered to have been reworked from the Middle Karoo River, differ profoundly from each other. In addition, the surface feature studies and Fourier Transform Infrared Analyses clearly show major distinctions between the diamond populations from the Sout River-Olifants River estuary and those from the Kimberley kimberlite province which was said to have supplied diamonds in large quantities to the Olifants River estuary via the postulated Karoo River. Furthermore the idea of a palaeo-Gamoep River playing a significant role in the transportation of diamonds to the west coast is favoured by the presence of brown-spotted diamonds and diamonds with Platelet Preservation Indices revealing severe platelet destruction that could be traced through Bosluispan in the Koa River valley, the Buffels River valley, the Buffels River estuary and to the shallow marine environment north of the Buffels River. Zircon geochronology confirmed the role of the Orange River in the denudation of the sub-continent. With respect to the drainage evolution and diamond distribution in southern Africa the results of this study indicate a complex diamond dispersal model that differs in some respects from prevailing theories. It shows that diamonds liberated from pre- Karoo kimberlites in the north-eastern part of the sub-continent were initially moved in a south-westerly direction by pre-Karoo drainages, then by Dwyka glaciers and ice sheets. Ultimately, after liberation from exhumed glacial and fluvial deposits and together with diamonds subsequently liberated from Jurassic and Cretaceous kimberlites, Cretaceous and younger drainages provided the transport toward the Atlantic Ocean where the diamonds were concentrated along shorelines and in bedrock trap sites. Significant quantities did not reach the coast, but were locked up in fluvial sediments in erosion remnants like terraces, karstic depressions and other segments of palaeo-channels along the way. The presence of diamonds with FTIR characteristics reminiscent of those from Orapa and Jwaneng in the Orange River deposits as well as in a raised marine terrace in southern Namaqualand and in marine deposits north of Concession 12A, also negates the possible existence of a palaeo-Kalahari River, unless it was a very young system that did not interrupt the south-bound dispersal of Botswana diamonds during the Late Oligocene-Early Miocene. The study also included microscopic examination of a parcel of diamonds from the enigmatic Skeleton Coast deposits, north-western Namibia. These results confirmed the conclusion based on geological and geomorphic grounds that these diamonds cannot be linked to the Oranjemund deposits, while their surface features showed that pre-Karoo sources comprise the most likely provenance for the Skeleton Coast diamonds. Thus the combination of FTIR analyses and surface feature studies of diamonds, zircon geochronology and SEM analyses of garnets allowed the formulation of a revised model for the distribution of alluvial diamonds and the drainage history of the sub-continent since the Middle Cretaceous, while the study of sedimentary clasts confirmed the repeated occurrence of high energy fluvial conditions – especially evident in the palaeo-Orange River sediments – that contributed to the high percentage of gem stones in the surviving alluvial diamond populations due to the destruction of poor quality diamonds.
AFRIKAANSE OPSOMMING: Die ontdekking van ryk alluviale diamantafsettings aan die suider-Afrikaanse weskus, meer as 1200 kilometer van die Kimberley-omgewing af tussen 1908 en 1927, het 'n aantal teorieë omtrent moontlike provenansgebiede vir hierdie afsettings tot gevolg gehad. Dit het gewissel van die suidwaartse vervoer van diamante vanaf bronne in suidelike Namibië, diamantdraende kimberliete in die kusvlaktes of op die vastelandstoep onder huidige seevlak, tot die vervoer van diamante deur weswaarts-vloeiende riviere vanuit die binneland. Geen ontdekkings wat eersgenoemde teorie kon ondersteun is in Namibië gemaak nie. Verder, namate meer gevorderde navorsingsresultate aan die lig gekom het, het dit duidelik geword dat kimberliete wat weg van 'n antieke kraton geleë is, grootliks sonder diamante is, en gevolglik het die idee van nabygeleë diamantdraende kimberliete in die kusvlakte of op die seebodem as bron, onaanvaarbaar geword. Grootskaalse wes- tot suidweswaartse vervoer van diamante het gevolglik die enigste aanvaarbare alternatief gebied. Die ontdekkiing van aan- en aflandige mariene afsettings tot so ver as suid van die Olifantrsrivier het getoon dat die Vaal-Oranjestelsel in sy huidige vorm nie die enigste vervoerkanaal vir diamante na die weskus kon wees nie. Die dreineringsgeskiedenis van suidelike Afrika was gevolglik vertolk aan die hand van twee voorgestelde groot oer-rivierstelsels, naamlik: - Die Karoorivier met sy bolope naastenby soortgelyk aan dié van die moderne Oranje- en Vaalriviere, en wat langs die huidige Olifantsrivier uitgemond het; - Die Kalaharirivier wat die suide van Botswana gedreineer het, en min of meer die roete van die huidige Moloporivier gevolg het, met sy monding baie naby aan dié van die moderne Oranjerivier. 'n Belangrike tekortkoming in bogenoemde model is die feit dat dit nie 'n verduideliking bied vir die volgende feit nie: Diamant-produksiedata van die Suid-Afrikaanse weskus toon 'n skielike toename in graad (karaat per 100 ton) en gemiddelde steengrootte van diamante by die monding van al die belangrike riviere tussen die Olifants- en Oranjeriviere, wat vanaf die platorand na die Atlantiese Oseaan dreineer. Die feit dat fluviale diamantvoorkomste in die valleie van die Bufffels-, Swartlintjies-, Spoeg-, Horees- en Groenriviere aangetref word, bevestig dat hierdie verskynsel nie net aan die teenwoordigheid van kus-inhamme en ruwer vloertopografie wat met die riviermondings geassosiëer is, toegeskryf kan word nie, alhoewel dit wel „n bydrae tot hierdie waarneming kon maak. Dit bevestig dat hierdie riviere wel in hul opvang-gebiede ook toegang tot diamanthoudende puin gehad het, sonder enige kontak met die Olifants- of Oranjeriviere. 'n Aantal navorsers het die gedagte geopper dat diamante wat uit voor-Karoo kimberliete vrygestel was, deur bewegende ysplate en/of gletsers vanaf hul provenansgebiede na die suidweste van die subkontinent vervoer is. Uit die voorafgaande paragrawe is dit duidelik dat, ongeveer ʼn eeu ná die ontdekking van diamante langs die suider-Afrikaanse weskus, daar nog nie eenstemmigheid bereik is oor die oorsprong van hierdie diamante nie. Die doel van hierdie studie was gevolglik die daarstelling van „n model wat „n aanvaarbare verduideliking bied vir die verspreiding en afsetting van sommige voorkomste van spoeldiamante in suidelike Afrika soos tans waargeneem. Vir hierdie doel is 1878 diamante afkomstig vanuit 25 alluviale en twee kimberlietvoorkomste ondersoek. Die resultate is vergelyk met soortgelyke inligting wat bekend is vir diamantpopulasies vanuit 12 suider-Afrikaanse kimberliete. Die diamantstudie is aangevul met die ondersoek van spoelklippe vanuit gruismonsters wat langs die Middel- en Benede Oranjerivier versamel is asook Skanderings-elektron Mikroskoop-analises (SEM) van granaatkorrels en sirkoon-geokronologie. Die resultate van hierdie studie ondersteun nie die hipotese van „n eertydse Karoorivier nie. Die teenwoordigheid van bruin spikkels op diamante wat – in die konteks van die geologiese geskiedenis van suidelike Afrika – vrystelling vanuit vóór- Karoo kimberliete impliseer, asook die resultate van FTIR-analises dui op „n komplekse model wat „n alternatief bied vir bestaande sienswyses. Dit toon dat die diamantpopulasies by Kwaggaskop langs die Soutrivier wat veronderstel was om die Benede Karoorivier te verteenwoordig, en dié wat suid van Brandvlei en Van Wyksvlei in die vallei van die Sakrivier aangetref word en veronderstel was om afkomstig te wees uit die Middel Karoorivier, drasties van mekaar verskil. Dit openbaar ook beduidende verskille tussen die diamantpopulasies van die Olifantsriviermonding en dié van die Kimberley-omgewing waarvandaan die veronderstelde Karoorivier groot hoeveelhede diamante aan die Sout-Olifantsrivier sou gelewer het. Verder verskaf die teenwoordigheid van diamante met bruin spikkels en diamante met eienskappe wat toon dat hul stikstofplaatjies vernietig is, „n skakel tussen Bosluispan in die vallei van die Koarivier en die seegebied noord van die Buffelsrivier, via die Buffelsriviervallei en die Buffelsriviermonding, en hierdie feite ondersteun gevolglik eerder die voorstel dat groot hoeveelhede diamante deur die paleo-Gamoeprivier na die weskus vervoer is. Die teenwoordigheid van diamante met FTIR-kenmerke soortgelyk aan dié van Orapa en Jwaneng in die Mid-Oranje afsettings, 'n mariene terras in die suide van Namakwaland en in mariene konsessies noord van Seegebied 12A, opponeer ook die gedagte van 'n paleo-Kalaharirivier, tensy laasgenoemde 'n baie jong stelsel was wat nie die suidwaartse beweging van Botswana-diamante gedurende die Laat Oligoseen tot Vroeg Mioseen verhinder het nie. Die resultate van die sirkoon-geokronologie het die rol van die Oranjerivier in die afplatting van die subkontinent bevestig. Die volgende model tree uit bogenoemde waarnemings na vore: diamante wat in die noordooste van die subkontinent uit kimberliete met „n voor-Karoo inplasingsouderdom vrygestel is, is aanvanklik suidweswaarts vervoer deur voor-Karoo riviere. Daarna is die diamante deur gletsers en ysplate gedurende die Dwyka-tydperk, en uiteindelik ná vrystelling vanuit ontblote glasiale en paleo-fluviale afsettings tesame met diamante wat intussen vanuit Jura- en Krytouderom kimberliete vrygestel is, deur die dreineringstelsels in die Kryt-tydperk en later, verder suidweswaarts vervoer. Sommige het onderweg in fluviale sedimente (terrasse, karstholtes en ander reste van paleokanale) agtergebly, terwyl „n beduidende hoeveelheid tot in die Atlantiese Oseaan vervoer is waar hulle deur mariene prosesse in ou strandlyne en bodemrots opvangstrukture gekonsentreer is. Die studie het ook die mikroskopiese ondersoek van 'n pakkie diamante afkomstig vanuit die enigmatiese afsettings aan die noordelike Skedelkus van Namibië ingesluit. Op grond van geologiese en geomorfologiese getuienis word die afleiding gemaak dat die Skedelkusdiamante nie met die Oranjemund-afsettings verbind kan word nie, terwyl die mikroskopiese oppervlakteksture toon dat bronne met 'n voor-Karoo inplasingsouderdom die mees waarskynlike provenans vir hierdie diamante is. Die kombinasie van FTIR-analises en oppervlaktekstuur-studies van diamante, sirkoongeokronologie en SEM-analises van granate het die formulering van „n hersiene model vir die subkontinent se dreineringsgeskiedenis sedert die Middel-Kryttydperk en diamantverspreiding moontlik gemaak terwyl die studie van sedimentêre klaste getoon het dat hoë-energietoestande, waardeur diamante van swak gehalte vernietig sou word, herhaaldelik voorgekom het, veral in die paleo-Oranjerivier. Die afleiding word gemaak dat hierdie aspek „n bydrae gelewer het tot die hoë persentasie juweelstene in die oorblywende alluviale diamantpopulasies.

Thesis (MSc) -- University of Stellenbosch, 2002.
ENGLISH ABSTRACT: The fires, which occurred during January 2000 on the Southern Cape Peninsula, Cape Province, South Africa, focused attention on the importance of sound, informed management of exotic plant invaders in fynbos, especially at the urban interface. The fires also highlighted the relative lack of knowledge about the combined impacts of fire, exotic plants and the exotic-clearing programme on soil seed banks and regeneration. This study examines soil borne seed banks, regeneration, soil chemistry and micro biota in different postfire environments, focusing on three components of exotic plant management: The post-fire effects of standing invasive exotic plants; stacks of slashed exotic plant material which were deliberately burnt and stacks reduced to heat scars by a wildfire. The primary hypothesis addressed is that post-fire vegetation regeneration patterns, seed bank diversity and seed bank abundance are linked to pre-fire vegetation characteristics and, in particular, to the treatment of exotic plant species. It is also hypothesised that soil microbe population sizes are linked to pre-fire vegetation and soil chemical composition. Differences in soil seed banks, soil micro biota and vegetation regeneration patterns occur in different post-fire environments. High volumes of (live or dead) woody exotic biomass negatively impact upon postfire indigenous species diversity and abundance, both above and below-ground. Soil seed banks and above-ground regeneration decline with increasing fire intensity, wildfire burnt stack treatments showing the largest declines followed by wildfire burnt standing exotics, control burnt stacks, wildfire burnt cleared areas and wildfire burnt Mountain Fynbos treatments. Persistent indigenous seed banks are found under some exotic dominated stands. Heat damage, associated with high woody exotic biomass, affects seeds of all species into deep soil layers. Depth of burial is a more important determinant of seed survival during fires than seed size. Soil microbial populations are variably affected by exotic plants, their management and increases in fire intensity. The most drastic microbial population changes are in post-fire treatments of high exotic plant biomass. Soil chemistry affects microbial population sizes as does seasonal climatic changes. In this thesis vegetation, seed bank and microbial responses to various exotic plant management practices are shown and management recommendations are made. Keywords: exotic plants, fire, Fynbos Siome, microbes, post-fire succession, soil seed banks.
AFRIKAANSE OPSOMMING: Die Januarie 2000 vure op die Suid Kaapse Skiereiland het fokus gerig op die belangrikheid van goeie, ingeligte bestuur van uitheemse indringerplante in fynbos, veral naby stedelike gebiede. Die vure het ook 'n relatiewe .gebrek aan kennis aangaande die gekombineerde impakte van vuur, uitheemse plantegroei en indringer plant beheer programme op grond saadbanke en die hergroei van plante na 'n vuur aan die lig gebring. Hierdie projek bestudeer die invloed van vuur op grond saadbanke, hergroei van plante, grond chemie en mikro-organismes. Die klem lê op drie komponente van uitheemse plant bestuur: waar staande uitheemse plante voorkom; waar skoongekapte uitheemse plante in hope gestapel is en gekontraleerd gebrand is en waar soortgelyke hope in 'n onbeplande weghol vuur gebrand is. Die primêre hipotese is dat plant herstelpatrone, saadbank diversiteit en grootte gekoppel is aan veldtoestande voordat daar gebrand is, en veral aan die bestuur van uitheemse plantspesies. Nog 'n sentrale hipotese is dat die grootte van grond mikrobiale populasies gekoppel is aan veld toestande voor die brand en aan grond chemiese samestelling. Hierdie studie dui verskille aan in grond saadbanke, mikro-organismes en plant hergroeipatrone onder verskeie toestande na vuur. Die brand van hoë volumes (lewende of dooie) houtagtige uitheemse plant biomassa benadeel inheemse plant spesie diversiteit en getalle (bo en onder die grond oppervlak). Grond saadbanke neem af met vehogings in vuur intensiteit. Die grootste afnames is in wegholvuur gebrande gestapelde uitheemse plantmateriaal gevolg deur wegholvuur gebrande staande uitheemse plante, opsetlik gebrande hope uitheemse plante, gebrande skoongekapte areas en wegholvuur gebrande Berg Fynbos. Ou inheemse saadbanke is gevind onder sommige areas wat voor die vuur oorheers was deur uitheemse plantegroei. Hitteskade, geassosieer met hoë volumes houtagtige uitheemse biomassa, affekteer sade van alle spesies tot diep in die grond. Saad oorlewing tydens brande is meer geaffekteer deur diepte van begrawing in die grond as deur saad grootte. Grond mikro-organisme populasies is geaffekteer deur uitheemse indringer plante, die bestuur van uitheemse plante en vuur intensiteit. Die grootste veranderinge is waar die biomassa van uitheemse plantegroei baie hoog is. Grond chemiese samestelling en seisoenale veranderinge in weerspatrone affekteer die grootte van mikrobiale bevolkings. In hierdie tesis word verskille in plantegroei, saad store en grond mikrobes, soos geaffekteer deur uitheemse plant beheer programme uitgewys en voorstelle vir toekomstige bestuur gemaak. Sleutelwoorde: Fynbos Bioom, grond saad stoor, mikrobes, plant hergroei, uitheemse plante, vuur.

Includes bibliographical references.
The Berg River, Western Cape, South Africa, is an example of a catchment region where human pressures and conservation of natural resources collide. The river receives effluents from two large settlements and several smaller adjacent villages, including that of industrial and extensive agricultural activity. The estuary is one of the largest in South Africa and rated as the third most important conservation zone in the country. In this study, the chemical speciation of heavy metals in the river sediment was determined in order to evaluate the extent of pollution. Chemical speciation using sequential chemical extraction of sediment samples was used to measure the mobility and bioavailability of cadmium (Cd), lead (Pb), arsenic (As), chromium (Cr), nickel (Ni), cobalt (Co), iron (Fe), copper (Cu), zinc (Zn) and manganese (Mn). The metals Cd and Zn were found to be the most mobile and bioavailable. The study also examined the vertical distribution of heavy metals in estuarine sediment cores to evaluate the extent of heavy metal contamination with time and the degree to which heavy metals are influenced by other sedimentological parameters such as grain size, sediment composition and organic matter. Three sediment cores, ranging from 160 to 240 em long, were collected using a mechanical vibrating corer. The vertical distribution of metals in the cores showed that the metal concentration was higher at the top and middle of the cores. Based on the enrichment factor (EF) and anthropogenic factor (AF) values, it is suggested that the sediments of the estuary are not polluted with Co, Mn, Cu, Ni, Zn and Fe but moderately to highly polluted with Pb, As, Cd and Cr. The data reported provide a useful baseline for establishing heavy metal concentrations in the estuary and will be an important consideration in future sediment quality studies. The spatial distribution of the metals was also studied to understand how location is linked to metal concentration. The average concentration of metals in the core sediment increased with increasing distance from the mouth of the river. The adsorption behaviour of the estuary sediment with micro-pollutants has a significant influence on the environmental quality of estuary waters. For this reason, the absorption of Pb, Cr, Cu, Ni, and Zn onto sediment was study. It was found that the sediments of the Berg River estuary have a low potential for absorption of Ni and Zn making these metals more mobile and bioavailable.