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Journal articles on the topic 'Plant performance – Monitoring – South Africa'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

RETIEF, FRANCOIS. "EFFECTIVENESS OF STRATEGIC ENVIRONMENTAL ASSESSMENT (SEA) IN SOUTH AFRICA." Journal of Environmental Assessment Policy and Management 09, no. 01 (2007): 83–101. http://dx.doi.org/10.1142/s146433320700269x.

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South Africa is regarded as a leading developing country in terms of SEA practice. However, the lack of empirical research to evaluate and learn from this wealth of practical experience can be considered a major lost opportunity not only for South Africa but also for the development of our understanding of SEA in the developing world. This paper provides the research results of an effectiveness review of six high profile SEA case studies within the South African context. Measured against four key performance areas (KPAs) and nine key performance indicators (KPIs) the research results show a hi

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2

Amigun, Bamikole, Johann Gorgens, and Hansie Knoetze. "Biomethanol production from gasification of non-woody plant in South Africa: Optimum scale and economic performance." Energy Policy 38, no. 1 (2010): 312–22. http://dx.doi.org/10.1016/j.enpol.2009.09.020.

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Mhonde, Ngoni, Mariette Smart, Kirsten Corin, and Nora Schreithofer. "Investigating the Electrochemical Interaction of a Thiol Collector with Chalcopyrite and Galena in the Presence of a Mixed Microbial Community." Minerals 10, no. 6 (2020): 553. http://dx.doi.org/10.3390/min10060553.

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High microbial cell counts have been recorded in sewage waters employed as process water in mineral beneficiation plants across the world. The presence of these microbes can negatively impact flotation performance through mineral passivation, although some microbes improve flotation performance as investigated in various bio-flotation studies. The current study aims to understand the electrochemical behaviour of minerals in the presence of a sodium ethyl xanthate (SEX) collector and microbes originating from a sulphide ore processing plant in South Africa. The electrochemical response was corr

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Marais, S. S., E. J. Ncube, T. A. M. Msagati, B. B. Mamba, and T. I. Nkambule. "Investigation of natural organic matter (NOM) character and its removal in a chlorinated and chloraminated system at Rand Water, South Africa." Water Supply 17, no. 5 (2017): 1287–97. http://dx.doi.org/10.2166/ws.2017.028.

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In its natural environment, natural organic matter (NOM) is not problematic. However, during water treatment NOM does affect water quality specifically during the disinfection step, where if NOM is present it reacts with disinfectants resulting in the formation of disinfection by-products. To emphasize the importance of NOM monitoring during potable water treatment this study aimed to characterize NOM and evaluate NOM removal by a conventional water treatment plant considering seasonal trends. NOM was characterized by making use of NOM polarity and specific ultraviolet absorbance. NOM removal

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Duvenhage, D. Frank, Alan C. Brent, William H. L. Stafford, and S. Grobbelaar. "Water and CSP—Linking CSP Water Demand Models and National Hydrology Data to Sustainably Manage CSP Development and Water Resources in Arid Regions." Sustainability 12, no. 8 (2020): 3373. http://dx.doi.org/10.3390/su12083373.

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A systematic approach to evaluate Concentrating Solar Power (CSP) plant fleet deployment and sustainable water resource use in arid regions is presented. An overview is given of previous work carried out. Once CSP development scenarios, suitable areas for development, and the water demand from CSP operations were evaluated, appropriate spatiotemporal CSP performance models were developed. The resulting consumptive patterns and the impact of variable resource availability on CSP plant operation are analysed. This evaluation considered the whole of South Africa, with focus on the areas identifie

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Walsdorff, A., M. van Kraayenburg, and C. A. Barnardt. "A multi-site approach towards integrating environmental management in the wine production industry." Water Science and Technology 51, no. 1 (2005): 61–69. http://dx.doi.org/10.2166/wst.2005.0008.

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Nine wineries and a water bottling plant situated in the Franschhoek Valley, South Africa, have decided to lead the way towards creating a safer and more sustainable environment in the Valley. As part of the Vignerons de Franschhoek ECO Association (VFEA), they adopted a multi-site approach and obtained, in December 2003, the first ISO 14001 multi-site certification in South Africa. This proactive approach allows them better overall environmental performances through mutual motivation, information sharing and comparison of practices by the different participating organisations of Franschhoek V

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Smart, Mariette, Robert J. Huddy, Catherine J. Edward, et al. "Linking Microbial Community Dynamics in BIOX^® Leaching Tanks to Process Conditions: Integrating Lab and Commercial Experience." Solid State Phenomena 262 (August 2017): 38–42. http://dx.doi.org/10.4028/www.scientific.net/ssp.262.38.

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In the commercial BIOX® process, an acidophilic mixed bacterial and archaeal community dominated by iron and sulphur oxidising microorganisms is used to facilitate the recovery of precious metals from refractory gold-bearing sulphidic mineral concentrates. Characterisation of the microbial communities associated with commercial BIOX® reactors from four continents revealed a significant shift in the microbial community structure compared to that of the seed culture, maintained at SGS (South Africa). This has motivated more detailed study of the microbial community dynamics in the process. Micro

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Blakeley, S. Lucille, Stuart Sweeney, Gregory Husak, et al. "Identifying Precipitation and Reference Evapotranspiration Trends in West Africa to Support Drought Insurance." Remote Sensing 12, no. 15 (2020): 2432. http://dx.doi.org/10.3390/rs12152432.

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West Africa represents a wide gradient of climates, extending from tropical conditions along the Guinea Coast to the dry deserts of the south Sahara, and it has some of the lowest income, most vulnerable populations on the planet, which increases catastrophic impacts of low and high frequency climate variability. This paper investigates low and high frequency climate variability in West African monthly and seasonal precipitation and reference evapotranspiration from the early 1980s to 2016. We examine the impact of those trends and how they interact with payouts from index insurance products.

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9

Kraaij, T., J. A. Baard, and B. J. Crain. "Conservation status and management insights from tracking a cryptic and Critically Endangered species of Orchidaceae." Oryx 51, no. 3 (2016): 441–50. http://dx.doi.org/10.1017/s0030605316000272.

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AbstractNinety-five percent of orchid species associated with fynbos shrublands of South Africa's Cape Floristic Kingdom have been assessed for the IUCN Red List, yet aspects of their demography and population biology remain poorly understood. We conducted a 6-year demographic study of the Critically Endangered Disa procera, a cryptic, terrestrial species from South Africa with a global population of c. 50 individuals known from a single location. We aimed to provide management recommendations that would facilitate its persistence. Our findings indicate that the population of D. procera is lar

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Setshedi, Koketso J., Nhamo Mutingwende, and Nosiphiwe P. Ngqwala. "The Use of Artificial Neural Networks to Predict the Physicochemical Characteristics of Water Quality in Three District Municipalities, Eastern Cape Province, South Africa." International Journal of Environmental Research and Public Health 18, no. 10 (2021): 5248. http://dx.doi.org/10.3390/ijerph18105248.

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Reliable prediction of water quality changes is a prerequisite for early water pollution control and is vital in environmental monitoring, ecosystem sustainability, and human health. This study uses Artificial Neural Network (ANN) technique to develop the best model fits to predict water quality parameters by employing multilayer perceptron (MLP) neural network and the radial basis function (RBF) neural network, using data collected from three district municipalities. Two input combination models, MLP-4-5-4 and MLP-4-9-4, were trained, verified, and tested for their predictive performance abil

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Nyengerai, Tawanda, Motshana Phohole, Nelson Iqaba, et al. "Quality of service and continuous quality improvement in voluntary medical male circumcision programme across four provinces in South Africa: Longitudinal and cross-sectional programme data." PLOS ONE 16, no. 8 (2021): e0254850. http://dx.doi.org/10.1371/journal.pone.0254850.

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Background Recent studies in the Sub-Saharan countries in Africa have indicated gaps and challenges for voluntary medical male circumcision (VMMC) quality of service. Less has focused on the changes in quality of service after implementation of continuous quality improvement (CQI) action plans. This study aimed to evaluate the impact of coaching, provision of standard operating procedures (SOPS) and guidelines, mentoring and on-site in-service training in improving quality of VMMC services across four Right to Care (RTC) supported provinces in South Africa. Method This was a pre- and post-inte

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Awuah, Kwame T., Paul Aplin, Christopher G. Marston, Ian Powell, and Izak P. J. Smit. "Probabilistic Mapping and Spatial Pattern Analysis of Grazing Lawns in Southern African Savannahs Using WorldView-3 Imagery and Machine Learning Techniques." Remote Sensing 12, no. 20 (2020): 3357. http://dx.doi.org/10.3390/rs12203357.

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Savannah grazing lawns are a key food resource for large herbivores such as blue wildebeest (Connochaetes taurinus), hippopotamus (Hippopotamus amphibius) and white rhino (Ceratotherium simum), and impact herbivore densities, movement and recruitment rates. They also exert a strong influence on fire behaviour including frequency, intensity and spread. Thus, variation in grazing lawn cover can have a profound impact on broader savannah ecosystem dynamics. However, knowledge of their present cover and distribution is limited. Importantly, we lack a robust, broad-scale approach for detecting and

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Hussnain, Muhammad Qadeer ul, Abdul Waheed, Khydija Wakil, et al. "Shaping up the Future Spatial Plans for Urban Areas in Pakistan." Sustainability 12, no. 10 (2020): 4216. http://dx.doi.org/10.3390/su12104216.

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Since 2007, more than fifty percent of our planet’s population is living in urban areas. In the coming decade, the rate of urbanization will be fastest in Asia and Africa. Within South Asian countries, urbanization has attained its fastest pace in Pakistan. Urban planners and agencies in Pakistan have tried various spatial plan making solutions to manage urban areas, but none have given the desired results. After a 20% increase in declared urban areas within last two decades, urban planners and policy makers are looking for a more innovative and realistic spatial planning solution, which could

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Negwamba, Thulani, and Megersa Olumana Dinka. "Assessing the performance of Trichardt Wastewater Treatment Plant (South Africa)." Physics and Chemistry of the Earth, Parts A/B/C 114 (December 2019): 102784. http://dx.doi.org/10.1016/j.pce.2019.05.004.

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Rothman, M. D., R. J. Anderson, C. J. T. Boothroyd, F. A. Kemp, and J. J. Bolton. "The gracilarioids in South Africa: long-term monitoring of a declining resource." Journal of Applied Phycology 21, no. 1 (2008): 47–53. http://dx.doi.org/10.1007/s10811-008-9364-y.

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Pretorius, Johannes P., and Detlev G. Kröger. "Solar Chimney Power Plant Performance." Journal of Solar Energy Engineering 128, no. 3 (2006): 302–11. http://dx.doi.org/10.1115/1.2210491.

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This paper evaluates the performance of a large-scale solar chimney power plant. The study considers the performance of a particular reference plant under specified meteorological conditions at a reference location in South Africa. A computer simulation program is employed to solve the governing conservation and draught equations simultaneously. Newly developed convective heat transfer and momentum equations are included in the numerical model and multiple simulations are performed. Results indicate 24hr plant power production, while illustrating considerable daily and seasonal power output va

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Dvorak, W. S., J. K. Donahue, and J. A. Vasquez. "Early Performance of CAMCORE Introductions ofPinus patulain Brazil, Colombia and South Africa." South African Forestry Journal 174, no. 1 (1995): 23–33. http://dx.doi.org/10.1080/00382167.1995.9629875.

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18

Barron, N. "Intellectual Property Rights and Plant Variety Protection in South Africa: An International Perspective." Journal of Environmental Law 16, no. 1 (2004): 19–47. http://dx.doi.org/10.1093/jel/16.1.19.

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19

Apeh, Oliver O., Ochuko K. Overen, and Edson L. Meyer. "Monthly, Seasonal and Yearly Assessments of Global Solar Radiation, Clearness Index and Diffuse Fractions in Alice, South Africa." Sustainability 13, no. 4 (2021): 2135. http://dx.doi.org/10.3390/su13042135.

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The constant scheduled load shedding in South Africa has commonly been executed in an attempt to maintain the long aging coal power plants in the country. With the rise in the reduction of fossil fuels, efforts to eradicate environmental hazards of carbon through solar photovoltaic (PV) resources to their complete prospect are in progress. South Africa, and in particular the town Alice, acquires sunshine annually, making it appropriate to harvest solar energy. This work aims to characterize solar radiation, clearness index (Kt), and diffuse fraction (Kd) in Alice, South Africa. Hourly global a

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20

Rampersad, Renitha. "Monitoring and evaluation of corporate social responsibility programmes in South Africa." Risk Governance and Control: Financial Markets and Institutions 5, no. 4 (2015): 314–18. http://dx.doi.org/10.22495/rgcv5i4c2art5.

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The South African corporate sector invests millions to support community development and social programs. One of the more fundamental issues about sustainability in a business context is the fact that directors have a fiduciary duty to take into account interests of those stakeholders other than investors/shareholders. This therefore places major importance on sustainability reporting through reports on governance, economic, social and environmental performance and is increasingly being regarded as a key form of stakeholder engagement, and the most accepted formal way of communicating measured

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Gandidzanwa, Colleta, Aart Jan Verschoor, and Thabo Sacolo. "Evaluating Factors Affecting Performance of Land Reform Beneficiaries in South Africa." Sustainability 13, no. 16 (2021): 9325. http://dx.doi.org/10.3390/su13169325.

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The ability of farmers to operate redistributed farms in a profitable and sustainable manner is crucial for both successful integration into agricultural value chains and sustainable production systems. The performance of redistributed farms is becoming increasingly important as the number of redistributed farms increases in light of correcting previous anomalies in land ownership in South Africa while ensuring continued food security. Although much has been done to assess the impact of land reform on macro variables, little has been done to unpack factors associated with the success of redist

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Fatoki, Olawale. "Sustainable leadership and sustainable performance of hospitality firms in South Africa." Entrepreneurship and Sustainability Issues 8, no. 4 (2021): 610–21. http://dx.doi.org/10.9770/jesi.2021.8.4(37).

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23

Chidinma Maduekwe, Caroline, and Peter Kamala. "Performance measurement by small and medium enterprises in Cape Metropolis, South Africa." Problems and Perspectives in Management 14, no. 2 (2016): 46–55. http://dx.doi.org/10.21511/ppm.14(2).2016.05.

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High failure rate of small and medium enterprises (SMEs) has been partly attributed to the use of inappropriate performance measures. This study seeks to determine the types of performance measures employed by SMEs, purpose for which performance measures are used, perceived effectiveness of performance measures used and factors that may inhibit SMEs from using both financial and non-financial performance measures. Data are collected using a questionnaire and analyzed using descriptive and inferential statistics. The findings of this study reveal that most of the sampled SMEs measure their perf

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Goodness, Julie. "Urban landscaping choices and people’s selection of plant traits in Cape Town, South Africa." Environmental Science & Policy 85 (July 2018): 182–92. http://dx.doi.org/10.1016/j.envsci.2018.02.010.

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Iloms, Eunice, Olusola O. Ololade, Henry J. O. Ogola, and Ramganesh Selvarajan. "Investigating Industrial Effluent Impact on Municipal Wastewater Treatment Plant in Vaal, South Africa." International Journal of Environmental Research and Public Health 17, no. 3 (2020): 1096. http://dx.doi.org/10.3390/ijerph17031096.

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Industrial effluents with high concentrations of toxic heavy metals are of great concern because of their persistence and non-degradability. However, poor operation and maintenance of wastewater treatment infrastructure is a great concern in South Africa. In this study, physico-chemical parameters and heavy metals (HMs) concentration of wastewater from five different industries, Leeuwkuil wastewater treatment plant (WWTP) inflow and effluent, and Vaal River water samples were monitored between January and September 2017, to investigate the correlation between heavy metal pollution and the loca

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SANDHAM, LUKE ALAN, FELICITY VAN DER VYVER, and FRANCOIS PIETER RETIEF. "THE PERFORMANCE OF ENVIRONMENTAL IMPACT ASSESSMENT IN THE EXPLOSIVES MANUFACTURING INDUSTRY IN SOUTH AFRICA." Journal of Environmental Assessment Policy and Management 15, no. 03 (2013): 1350013. http://dx.doi.org/10.1142/s1464333213500130.

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Explosives manufacture in South Africa is a major component of the chemical and mining industry, and as an important producer of hazardous chemicals it is also a potential contributor to significant environmental impacts. Environmental authorisation of explosives manufacturing activities is based primarily upon the quality of information made available in the Environmental Impact Report (EIR), but the quality of EIR for explosives manufacturing projects has never been investigated. A modified version of the Lee and Colley review package was used to determine the EIR quality of a sample of four

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Hens, Luc, Torsten Wiedemann, Schalk Raath, Riana Stone, Paul Renders, and Eric Craenhals. "Performance of newly implemented Environmental Management Systems in primary schools in South Africa." Journal of Environmental Management 91, no. 4 (2010): 906–17. http://dx.doi.org/10.1016/j.jenvman.2009.11.007.

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Schoeman, J. J., and G. W. Leach. "An Investigation of the Performance of Two Newly Installed Defluoridation Plants in South Africa and Some Factors Affecting Their Performance." Water Science and Technology 19, no. 5-6 (1987): 953–65. http://dx.doi.org/10.2166/wst.1987.0273.

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Two activated alumina defluoridation plants have recently been installed and commissioned at a mine in South Africa. A reduction in plant capacity was experienced as a result of fouling of the activated alumina by entrapped suspended solids, metal hydroxides, carbonates and adsorbed silicates. It was demonstrated, however, that plant capacity could be restored by using backwashing and air scouring with rinsing repeatedly, using acid treatment periodically for silicate and hardness removal and by performing an interrupted run. Plant performance would also have been improved by the use of smalle

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Muzhinji, N., J. W. Woodhall, M. Truter, and J. E. van der Waals. "Variation in Fungicide Sensitivity AmongRhizoctoniaIsolates Recovered from Potatoes in South Africa." Plant Disease 102, no. 8 (2018): 1520–26. http://dx.doi.org/10.1094/pdis-09-17-1470-re.

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Rhizoctonia is a major pathogen of potato causing substantial yield losses worldwide. Control of Rhizoctonia diseases is based predominantly on the application of fungicides. However, little is known about the fungicide response variability of different Rhizoctonia anastomosis groups associated with potato diseases in South Africa. A total of 131 Rhizoctonia isolates were obtained from potato growing regions of South Africa from 2012 to 2014 and evaluated for sensitivity to fungicides in vitro and in vivo. The fungicides comprised six chemical formulations and one bio-fungicide representing se

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Chu, Jingchun, Ling Yuan, Haining Pan, and Jianming Hou. "Primary Frequency Regulation Requirement of South Africa Grid Code and its DIgSILENT Simulation." E3S Web of Conferences 165 (2020): 06008. http://dx.doi.org/10.1051/e3sconf/202016506008.

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Wind power is a kind of renewable energy with unexpected and unfriendly characteristics, so different countries have their own grid code to restrain wind power generation to an acceptable performance. In South Africa, before a Wind Power Plant (WPP) is connected to the grid, WPP’s performance must be pre-evaluated according to the requirements of the Grid Code, which is compulsory for any new WPP of South Africa. This paper firstly introduced the primary frequency regulation requirement for WPP evaluation in South Africa, then explained how the WPP, Power Plant Controller (PPC) and wind turbin

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Scholtz, Henriette Elsabe, and Waldette Engelbrecht. "The level and stability of institutional ownership and its influence on company performance in South Africa." Corporate Ownership and Control 13, no. 1 (2015): 1265–77. http://dx.doi.org/10.22495/cocv13i1c10p12.

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Institutional ownership in companies is an important tool in monitoring and controlling the business interests of the shareholders. This study investigated whether the performance of the Top 100 companies listed on the Johannesburg Securities Exchange is influenced by the level, and stability of institutional ownership. A regression analysis was used to test the relationship between Tobin’s Q and return on assets and the international, domestic and total institutional ownership and the stability of institutional shareholding. It was found that institutional shareholding is an important corpora

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du Pisani, Jacobus A., and Luke A. Sandham. "Assessing the performance of SIA in the EIA context: A case study of South Africa." Environmental Impact Assessment Review 26, no. 8 (2006): 707–24. http://dx.doi.org/10.1016/j.eiar.2006.07.002.

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BROWNLIE, SUSIE, CHARL DE VILLIERS, AMANDA DRIVER, NANCY JOB, AMREI VON HASE, and KRISTAL MAZE. "SYSTEMATIC CONSERVATION PLANNING IN THE CAPE FLORISTIC REGION AND SUCCULENT KAROO, SOUTH AFRICA: ENABLING SOUND SPATIAL PLANNING AND IMPROVED ENVIRONMENTAL ASSESSMENT." Journal of Environmental Assessment Policy and Management 07, no. 02 (2005): 201–28. http://dx.doi.org/10.1142/s1464333205001992.

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The Cape Floristic Region (CFR) and Succulent Karoo are global biodiversity hotspots. The CFR is one of six plant kingdoms worldwide. The CFR and most of the Succulent Karoo lie within South Africa. South Africa has ratified the Biodiversity Convention, and must accordingly safeguard its biodiversity. Environmental assessment (EA) can help to achieve this end. Environmental legislation in South Africa requires EA for activities at project, not strategic level. However, strategic environmental assessment has been mandatory since 2000 for preparing municipal spatial development frameworks (SDFs)

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Walmsley, Sarah A., Rob W. Leslie, and Warwick H. H. Sauer. "Managing South Africa's trawl bycatch." ICES Journal of Marine Science 64, no. 2 (2006): 405–12. http://dx.doi.org/10.1093/icesjms/fsl022.

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Abstract Walmsley, S. A., Leslie, R. W., and Sauer, W. H. H. 2007. Managing South Africa's trawl bycatch. – ICES Journal of Marine Science, 64: 405–412. Over the past few decades, it has become widely recognized that the management strategies of world fisheries must ensure sustainability of bycatch as well as of target species. South Africa implemented a pilot observer programme from 1995 to 2000 to collect data on the levels and patterns of bycatch and discards in the demersal trawl fishery. Here, the results of that programme are used in conjunction with information on bycatch value and comp

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O’Connor, Tim G., Greg Martindale, Craig D. Morris, Alan Short, T. F. Witkowski, and Rob Scott-Shaw. "Influence of Grazing Management on Plant Diversity of Highland Sourveld Grassland, KwaZulu-Natal, South Africa." Rangeland Ecology & Management 64, no. 2 (2011): 196–207. http://dx.doi.org/10.2111/rem-d-10-00062.1.

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Zhao, Haigen, and Yanfei Ma. "Evaluating the Drought-Monitoring Utility of Four Satellite-Based Quantitative Precipitation Estimation Products at Global Scale." Remote Sensing 11, no. 17 (2019): 2010. http://dx.doi.org/10.3390/rs11172010.

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This study simultaneously analyzed and evaluated the meteorological drought-monitoring utility of the following four satellite-based, quantitative precipitation estimation (QPE) products: the Tropical Rainfall Measuring Mission (TRMM) Multi-Satellite Precipitation Analysis 3B43V7 (TRMM-3B43), the Climate Hazards Group InfraRed Precipitation with Station (CHIRPS), the Climate Prediction Center Morphing Technique gauge-satellite blended product (CMORPH-BLD), and the Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks-Climate Data Record (PERSIANN-CDR). Data

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Geerts, Sjirk, Taryn Rossenrode, Ulrike M. Irlich, and Vernon Visser. "Emerging Ornamental Plant Invaders in Urban Areas—Centranthus ruber in Cape Town, South Africa as a Case Study." Invasive Plant Science and Management 10, no. 4 (2017): 322–31. http://dx.doi.org/10.1017/inp.2017.35.

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Plant species that receive significant human introduction effort and assistance generally are the most problematic invaders. Despite this, invasive ornamental species in urban settings have received relatively little attention if not invading natural areas. Here we consider Centranthus ruber in an urban setting in South Africa as a case study and explore when emerging invaders are able to cross the urban–wildland interface and what hinders early eradication in urban environments. Centranthus ruber was introduced into Cape Town, South Africa, more than a century ago as a garden ornamental, but

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Raal, P. A. "Ecology and population biology of Euphorbia perangusta (Euphorbiaceae) in the Transvaal, South Africa." Bothalia 18, no. 1 (1988): 105–10. http://dx.doi.org/10.4102/abc.v18i1.991.

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The conservation status of Euphorbia perangusta R. A. Dyer, an endangered plant restricted to the Marico District of the Transvaal, South Africa, and adjoining parts of Bophuthatswana was determined. The distribution, habitat and population dynamics of E. perangusta are discussed. The monitoring of the largest known population has revealed that this population has declined rapidly since the onset of a drought in 1983. The major cause of this decline appears to be the destruction of the plants by porcupines which feed on E. perangusta during droughts. It appears that, during droughts, E. perang

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Muzhinji, Norman, and Jacquie E. van der Waals. "Population Biology and Genetic Variation ofSpongospora subterraneaf. sp.subterranea, the Causal Pathogen of Powdery Scab and Root Galls on Potatoes in South Africa." Phytopathology® 109, no. 11 (2019): 1957–65. http://dx.doi.org/10.1094/phyto-12-18-0467-r.

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Spongospora subterranea f. sp. subterranea, causal agent of powdery scab and root galls of potatoes, occurs worldwide and is responsible for quality and yield losses in potato production in South Africa. Despite being one of the most important potato pathogens in South Africa, little information is available on the genetic structure and diversity of S. subterranea f. sp. subterranea, which could provide insight into the factors shaping its evolution and the role of inoculum sources in disease development. A total of 172 samples were collected from four potato growing regions in South Africa. A

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van der Straten, Ariane, Elizabeth Montgomery, Diantha Pillay, et al. "Feasibility, Performance, and Acceptability of the Wisebag™ for Potential Monitoring of Daily Gel Applicator Use in Durban, South Africa." AIDS and Behavior 17, no. 2 (2012): 640–48. http://dx.doi.org/10.1007/s10461-012-0330-y.

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Mle, T. R. "Potential Benefits of Monitoring and Evaluation as a Tool in the South African Local Government Spheres." Africa’s Public Service Delivery and Performance Review 2, no. 1 (2014): 56. http://dx.doi.org/10.4102/apsdpr.v2i1.43.

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Public institutions exist for the public good and employ public officials to perform duties aimed at providing a better life for all. The Constitution of the Republic of South Africa, 1996 requires that the public service maintains a high standard of professional ethics, use resources efficiently and effectively, and provide services equitably. When the new political dispensation came into being in 1994 in South Africa, the newly-elected government committed itself to ensuring a better life for all through the provision of services, for example water and electricity supply, sanitation, and hou

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Barnes, B. N., and K. L. Pringle. "Oviposition by the banded fruit weevil, Phlyctinus callosus (Schoenherr) (Coleoptera: Curculionidae), in deciduous fruit orchards in South Africa." Bulletin of Entomological Research 79, no. 1 (1989): 31–40. http://dx.doi.org/10.1017/s000748530001854x.

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AbstractOviposition sites of Phlyctinus callosus (Schoenherr) in an apple and a nectarine orchard in the South Western Cape, South Africa, were investigated. No eggs were found on the fruit trees, only in different fractions of the orchard floor, viz. in orchard weeds, leaf litter and soil. Significantly more oviposition took place in plant material on the orchard floor than in the top 20 mm of the soil. Microscopic dissection of samples of such plant material revealed that females prefer to oviposit in confined or hollow spaces in moist, live or decaying plant tissue on the soil surface or in

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Shackleton, C. M., M. McConnachie, M. I. Chauke, et al. "Urban fuelwood demand and markets in a small town in South Africa: Livelihood vulnerability and alien plant control." International Journal of Sustainable Development & World Ecology 13, no. 6 (2006): 481–91. http://dx.doi.org/10.1080/13504500609469697.

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Omotayo, Abiodun Olusola, Peter Tshepiso Ndhlovu, Seleke Christopher Tshwene, Kehinde Oluseyi Olagunju, and Adeyemi Oladapo Aremu. "Determinants of Household Income and Willingness to Pay for Indigenous Plants in North West Province, South Africa: A Two-Stage Heckman Approach." Sustainability 13, no. 10 (2021): 5458. http://dx.doi.org/10.3390/su13105458.

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Using a cross-sectional dataset, this study examines the factors influencing the income and willingness to pay for indigenous plants by rural households in the North West Province of South Africa. The method of data analysis was based on a two-stage Heckman model. Based on empirical data, the majority (93%) of the households are willing to pay for the indigenous plants. Furthermore, factors such as the age of the household’s head, marital status, size of households, financial returns and economic benefit of indigenous plants significantly influenced income and willingness to pay for indigenous

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Schutte, C. F. "Education and training of water practitioners in South Africa: needs and programmes." Water Science and Technology 38, no. 11 (1998): 279–85. http://dx.doi.org/10.2166/wst.1998.0478.

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South Africa is facing severe water supply and water quality problems as a result of its limited water resources and other complicating factors. Adequately educated and trained water practitioners are needed to address these problems to ensure economic prosperity and a reasonable standard of living for all South Africans. Training and education needs are analysed in this paper and available programmes and initiatives to deliver the water practitioners needed are discussed. The main areas where training and education is needed include education at community level to educate local water committe

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Meijninger, WML, and C. Jarmain. "Satellite-based annual evaporation estimates of invasive alien plant species and native vegetation in South Africa." Water SA 40, no. 1 (2014): 95. http://dx.doi.org/10.4314/wsa.v40i1.12.

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Moyo, Welldone, Nhamo Chaukura, Machawe M. Motsa, et al. "Monitoring the characteristics and removal of natural organic matter fractions in selected South African water treatment plants." Water Practice and Technology 15, no. 4 (2020): 932–46. http://dx.doi.org/10.2166/wpt.2020.075.

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Abstract This study used spectroscopic methods to investigate the fate and dynamics of natural organic matter (NOM) as it traverses the treatment train at three water treatment plants (WTPs) in South Africa. The character, quantity, and removability of NOM at specific treatment stages was investigated by measuring changes in dissolved organic carbon (DOC) concentration, specific ultra-violet absorbance, UV absorbance, various spectroscopic indices, and maximum fluorescence intensity levels. A novel method of identifying and quantifying fluorescent fractions by combining synchronous fluorescenc

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Beneke, L. W., C. J. S. Fourie, and Z. Huan. "Investigation of an octagon-shaped chimney solar power plant." Journal of Energy in Southern Africa 27, no. 4 (2016): 38. http://dx.doi.org/10.17159/2413-3051/2016/v27i4a1497.

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South Africa has limited reserve electricity resources and many parts of the country have limited access to electricity, while electricity production capacity is at maximum and almost every gigawatt is accounted for. The energy crisis has highlighted the need to increase electricity generation capacity and to search for alternative energy sources. This study focuses on the solar chimney concept, which harnesses both solar and wind energy to generate electricity, especially in the sunny Northern Cape Province and Karoo regions of South Africa. The concept is an alternative design focusing on ve

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Gous, N., B. Cunningham, B. Kana, W. Stevens, and L. E. Scott. "Performance Monitoring of Mycobacterium tuberculosis Dried Culture Spots for Use with the GeneXpert System within a National Program in South Africa." Journal of Clinical Microbiology 51, no. 12 (2013): 4018–21. http://dx.doi.org/10.1128/jcm.01715-13.

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Michael, Oyewo Babajide. "Performance Measurement Systems and Firms' Characteristics." International Journal of Business Analytics 2, no. 3 (2015): 67–83. http://dx.doi.org/10.4018/ijban.2015070105.

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The Nigerian banking industry, being the second largest in sub-Saharan Africa after the South-African banking industry, has evolved and undergone remarkable transformation over the years. As such, the evaluation of the Performance Measurement Systems (PMS) of banks in Nigeriabecomes highly desirable. In response, this research was undertaken to: identify the elements of PMS; investigate the appropriateness and effectiveness of PMS; and assess the interrelationship between the PMS and strategy in the Nigerian banking industry. Statistics such as charts, percentage analysis, Wilcoxon, Chi – squa

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