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Dissertations / Theses on the topic 'Contamination (Technology)'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 July 2024

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1

Tsang, Jennifer Arr, and 曾昭雅. "Dioxin contamination in soil: remediation technology and environmental management." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B31255644.

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2

Fapohunda, Ajibola Oladapo Idowu. "Bacterial contamination and growth on red meat and fish." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321397.

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3

Alexandre, Allana Patrícia Santos. "Ozone technology as an alternative for reducing mycotoxin contamination in wheat products." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11141/tde-15052018-132453/.

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The objective of this study was to evaluate the reduction on the levels of mycotoxins in wheat products and by-products: deoxynivalenol (DON) in whole wheat flour, wheat bran and the efluent from wet milling of wheat flour, and zearalenone (ZEN) in wheat bran. Firstly, the reduction of DON contamination was studied on whole wheat flour, naturaly contaminated, and considering different moisture levels, as well as in wet milling effluent of wheat flour. Further, the impact of the ozonation process on the rheological properties of the processed flour was evaluated. Secondly, the wheat bran natura

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Suthiwongsunthorn, Nathapong. "Influence of contamination on the long-term reliability of chip-on-board (COB) technology." Thesis, Oxford Brookes University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247608.

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5

Gramin, Ava. "Analysis of Calibration and Surface Contamination on the Rosetta Langmuir Probe Instrument." Thesis, Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-317492.

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6

Fletcher, Sarah Marie. "Risk assessment of groundwater contamination from hydraulic fracturing fluid spills in Pennsylvania." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/72885.

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Thesis (S.M. in Technology and Policy)-- Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 109-115).<br>Fast-paced growth in natural gas production in the Marcellus Shale has fueled intense debate over the risk of groundwater contamination from hydraulic fracturing and the shale gas extraction process at large. While several notable incidents of groundwater contamination near shale gas wells have been investigated, the exact causes are uncertain and widely

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7

Kuzhanthaivelu, Gauthaman. "Investigative study of Biopolymer contamination in conventional recycling systems." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-15436.

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The recycling industry which is efficiently functioning now has technical expertise, contented consumers, and resource availability and capital contributors. The potential inflow of new material into this existing system should be able to fulfill all the needs of the stakeholders involved in it. With most of the polymer wastes received from the polyethylene (PE) and polyethylene terephthalate (PET), they are available in abundant crossing the threshold quantity (Cornell, 2007) needed for the recycling process to be carried for every single polymer starting from the individual source separation

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8

Behardien, Latiefa. "Investigation into the bacterial contamination in a spring water distribution system and the application of bioremediation as treatment technology." Thesis, Cape Peninsula University of Technology, 2008. http://hdl.handle.net/20.500.11838/826.

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Spring water bottled and sold for human consumption can only be subjected to certain treatment processes such as separation from unstable constituents by decantation, filtration and aeration, ultraviolet irradiation and ozonation. A spring water distribution system in the Western Cape, South Africa was experiencing microbiological problems. The aim of the study was to investigate bacterial contamination in the spring water distribution system and the application of bioremediation as treatment technology. Sampling at various points in the spring water distribution bottling system started in Feb

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9

Ugwoha, Ejikeme. "Impact of soil organic matter on groundwater contamination risks for ethanol and butanol blended gasoline." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/13052/.

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This work examined the impact of soil organic matter (SOM) on the sorption, phase distribution and transport of ethanol and butanol blended gasoline vapours after release. Microcosm and mini-lysimeter experiments were conducted using sand with varying SOM and moisture contents. Synthetic gasoline alone and blended with 10 - 20% ethanol and 10 - 20% butanol by volume, referred to as UG, E10 - E20 and B10 - B20, respectively, were used. Results from the UG were used as the benchmark to assess the impact of ethanol and butanol on gasoline compounds. The findings of this work illustrate the likely

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10

Taha, Mariam. "Bacterial Contamination of Platelet Concentrates: Role of Biofilm Formation and Manufacturing Process." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35192.

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Bacterial contamination of platelet concentrates (PCs) poses the highest transfusion-associated infectious risk with skin flora, such as Staphylococcus epidermidis and Staphylococcus capitis, being the predominant contaminants. These bacteria are able to form surface-attached aggregates or biofilms, which are present in the skin of healthy blood donors and can subsequently be isolated from contaminated PCs. Disinfection of the venipuncture area before donation with a combination of 2% chlorhexidine-gluconate and 70% isopropanol is used at Canadian Blood Services. However, not all bacteria a

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11

Abboud, Ahmad. "Interference mitigation in 5G mobile networks : Uplink pilot contamination in TDD massive MIMO scheme." Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0040/document.

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Par la révolution du Cloud Computing et des Smartphones, une quantité énorme de données devrait traverser le réseau chaque seconde où la plupart de ces données sont fournies par des mobiles utilisant des services Internet. La croissance rapide de la bande passante et des demandes de QoS rend les réseaux mobiles du 4ème G insuffisants. Le système de prochaine génération doit avoir un taux de sommation de 100Mbps à 1Gbps par terminal utilisateur (UT), avec une densité de connexion supérieure à 1M connexion / Km2, la mobilité des véhicules à grande vitesse jusqu'à 500 km / h et une fin à la fin (

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12

Nordstrom, Jeanne McDonald 1957. "The utility of using matched weight PVC filters during air sampling for particulates." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276824.

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Matched weight polyvinyl chloride (PVC) filters are currently available for use in total dust air sampling. This paper studies the utility of employing two superimposed filters in a cassette. Cassettes containing "paired" PVC filters were employed, in the same way matched weight filters would be used, during side by side sampling studies with cassettes housing single PVC filters, to determine whether the presence of two filters in a cassette presented problems during sampling. The effects of dust type, particle breakthrough, moisture concentration, and increased pressure drop from the addition

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13

Vincent, Dominick A. "Visibility over land from contrast analysis of multi-spectral satellite /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03sep%5FVincent.pdf.

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Thesis (M.S. in Meteorology and Physical Oceanography)--Naval Postgraduate School, September 2003.<br>Thesis advisor(s): Philip A. Durkee, Carlyle H. Wash. Includes bibliographical references (p. 49-51). Also available online.

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14

Hall, Lindsey H. (Lindsey Harrison). "A Materials Approach to Silicon Wafer Level Contamination Issues from the Wet Clean Process." Thesis, University of North Texas, 1996. https://digital.library.unt.edu/ark:/67531/metadc278380/.

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Semiconductor devices are built using hyperpure silicon and very controlled levels of doping to create desired electrical properties. Contamination can alter these precisely controlled electrical properties that can render the device non-functional or unreliable. It is desirable to determine what impurities impact the device and control them. This study consists of four parts: a) determination of acceptable SCI (Standard Clean 1) bath contamination levels using VPD-DSE-GFAAS (Vapor Phase Decomposition Droplet Surface Etching Graphite Furnace Atomic Absorption Spectroscopy), b) copper depositio

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15

Balasubramaniyam, Anuluxshy. "Root adaptive responses of tall fescue (Festuca arundinacea) growing in sand treated with petroleum hydrocarbon contamination." Thesis, University of Greenwich, 2012. http://gala.gre.ac.uk/9147/.

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Phytoremediation is a green technique used to restore polluted sites through plant-initiated biochemical processes. Its effectiveness, however, depends on the successful establishment of plants in the contaminated soil. Soils that are contaminated with polycyclic aromatic hydrocarbons (PAHs), especially low molecular weight, mobile PAHs such as naphthalene pose a significant challenge to this. Plant roots growing in these soils exhibit changes to their structure, physiology and growth patterns. Tall fescue (Festuca arundinacea) roots grown in sand contaminated with either petroleum crude oil (

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16

Clarke, Andrew Edward. "Investigation of factors contributing to the deposition of contaminants on dryer cylinders." Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-12182006-145041/.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2007.<br>Banerjee, Sujit, Committee Member ; Orloff, David, Committee Member ; Patterson, Tim, Committee Co-Chair ; Ahrens, Fred, Committee Co-Chair.

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17

Nordin, von Platen Hanna, and Matilda Gustafsson. "Nature-based Solutions for Flood Risk Reduction, Contamination Control and Climate Change Adaption." Thesis, KTH, Hållbarhet och miljöteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235943.

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Heavy precipitation events are expected to increase in the future, due to climate change. This predicted change will increase the risk of flooding, especially in urban areas. To mitigate these challenges and support a sustainable urban development, Nature-based solutions (NBS) can be used as a flood risk reduction measure. The NBS wetlands and constructed wetlands, composed of ponds, canals and ditches, are commonly used solutions which are multifunctional and primarily provides flood regulatory services, water quality improvements and increased biodiversity. To reach the full potential of NBS

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18

Behardien, Latiefa. "Investigation into the bacterial contamination in a spring water distribution system and the application of the bioremediation as a treatment technology /." [S.l. : s.n.], 2009. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1027&context=td_cput.

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19

Lourencetti, Natália Manuela Strohmayer. "Investigação de XenomiRs e RNAs de Candida tropicalis : alvos inovadores para descontaminação na produção de bioetanol /." Araraquara, 2018. http://hdl.handle.net/11449/154105.

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Orientador: Ana Marisa Fusco-Almeida<br>Coorientador: Francisco Javier Enguita<br>Banca: Eloisa aparecida Mocheuti Kronka<br>Banca: Daniel Guariz Pinheiro<br>Banca: Eleini Gomes<br>Banca: Tais Maria Bauab<br>Resumo: O processo de fermentação é amplamente utilizado em usinas brasileiras para produção de bioetanol e, mesmo sendo um processo amplamente difundido, a problemática sobre contaminações por micro-organismos ainda é uma incógnita. Problemas de redução de produtividade estão diretamente ligados à competição de nutrientes quando há decorrentes crises de contaminações por bactérias e leved

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20

Mendez, Eduardo. "Groundwater Interactive: Interdisciplinary Web-Based Software Incorporating New Learning Methodologies and Technologies." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/35796.

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Groundwater related courses are offered through several colleges at Virginia Tech. These classes enroll a diverse group of students with varied academic backgrounds and educational levels. Though these classes emphasize different aspects of groundwater resources, they lack a unified approach in instructional materials and learning methodologies for knowledge they do share. The goals of this research are to lessen the impact of variable student backgrounds and to better integrate the courses to improve teaching and learning, through the development of a multi-tiered, interdisciplinary websit

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21

Zieliński, Piotr. "The influence of surface roughness and solid contaminants on the performance of hydrodynamic journal bearings." Thesis, Queensland University of Technology, 1997.

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22

Jackson, Vanessa Angela. "Investigation into the metal contamination of three rivers in the Western Cape and the subsequent application of a bioreactor system as remediation technology." Thesis, [S.l. : s.n.], 2008. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1023&context=td_cput.

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23

Noe, Herbert Malise. "The influence of aerosolized microorganisms on the safety and quality of fortified biscuits." Thesis, Bloemfontein : Central University of Technology, Free State, 2005. http://hdl.handle.net/11462/59.

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Thesis (M. Tech.(Environmental Health)) - Central University of Technology, Free State, 2005<br>As the concentration of dust has been shown to be proportional to seasonal change in the Free State Province of South Africa, one might expect the prevalence of associated microorganisms to follow the same pattern. The presence of dust is also associated with an aerosolised microbial population that gets blown into almost any unsealed environment including food storage facilities at schools. In addition, facility design and storage practices at these schools are under-developed and could subsequentl

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24

Xu, Daxue. "Analyses of Particulate Contaminants in Semiconductor Processing Fluids." Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc500968/.

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Particle contamination control is a critical issue for the semiconductor industry. In the near future, this industry will be concerned with the chemical identities of contaminant particles as small as 0.01 pm in size. Therefore, analytical techniques with both high chemical sensitivity and spatial resolution are required. Transmission electron microscopy (TEM) provides excellent spatial resolution and yields structural and compositional information. It is rarely used, however, due to the difficulty of sample preparation. The goals of this research are to promote the use of TEM as an ultrafine

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25

Geary, Phillip M. "On-site system effluent source tracking using geochemical and microbial tracers in a coastal catchment." Thesis, View thesis, 2004. http://handle.uws.edu.au:8081/1959.7/566.

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The principal aims of this thesis were to examine whether there were hydraulic links between individual on-site wastewater systems in sandy soils at Salt Ash and the Tilgerry Creek estuary near Port Stephens, New South Wales, and whether the chemical and microbiological contaminants from on-site systems could reach surface and groundwaters, and possibly lead to impacts on estuarine oyster growing waters. The research outcomes are contained within the thesis and in four refereed papers presented at conferences, and which have been subsequently published, or are in press. Copies of each of these

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26

Hussain, Faris A. Karim. "Evaluating frozen beef and meat packaging material exposed to low levels of ammonia gas." Thesis, Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/1646.

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27

Xu, Fei 1971. "Investigation of Ultratrace Metallic and Organic Contaminants in Semiconductor Processing Environments." Thesis, University of North Texas, 1997. https://digital.library.unt.edu/ark:/67531/metadc277845/.

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Detection of ultratrace levels of metallic ion impurities in hydrofluoric acid solutions and alkaline hydrogen peroxide solution was demonstrated using a silicon-based sensing electrode. The sensor's operation principle is based on direct measurements of the silicon open-circuit potential shift generated by the interaction between metallic ions and the silicon-based sensing surface. The new sensor can have practical applications in the on-line monitoring of microelectronic chemical processing. The detection of Ag+ content in KODAK waste water was carried out successfully by this novel sensor.

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28

Nothnagel, Terese. "Impact of using mixed reality visualization to augment the exploration and analysis of water contamination events in a simulated car engine." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-220345.

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The aim of this thesis is to understand the impact of virtual reality (VR) on user's performance and experience in practical industrial applications. In particular, I collaborated with Volvo Cars supporting their current engineering design practices. VR has the potential to augment and thereby improve a person's observational analysis. Current VR publications are focused on VR applications and their potential benefits and improvements, mainly towards science, industry, medicine, and education. Yet, no research on the impact of augmenting the exploration and analysis of water contamination even

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29

Murphy, Anthony Patrick. "Dealing with contaminated land in the 'New Regime' : an appraisal of the use of plants as biomonitors for metal contamination analysis and risk assessment for a former landfill site in Greenwich." Thesis, University of Greenwich, 2007. http://gala.gre.ac.uk/6255/.

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In assessing the health risks posed from heavy metals in a contaminated site, it is important to determine when the contamination occurred and when the metals become available to the surrounding biota. Trees and plants growing in the vicinity of a contaminated site may provide such a historic record. There have been few studies on their role as biomarkers to identify metal mobility or bioavailability for continuous monitoring purposes. The aim of the study was to evaluate the role of plants as biomonitors for site characterisation and risk assessment purposes and to see if there was any select

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30

Young, Kevin Andrew. "The Mucilage of Opuntia Ficus Indica: A Natural, Sustainable, and Viable Water Treatment Technology for Use in Rural Mexico for Reducing Turbidity and Arsenic Contamination in Drinking Water." Scholar Commons, 2006. http://scholarcommons.usf.edu/etd/3832.

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The use of natural environmentally benign agents in the treatment of drinking water is rapidly gaining interest due to their inherently renewable character and low toxicity. We show that the common Mexican cactus produces a gum-like substance, cactus mucilage, which shows excellent flocculating abilities and is an economically viable alternative for low-income communities. Cactus mucilage is a neutral mixture of approximately 55 high-molecular weight sugar residues composed basically of arabinose, galactose, rhamnose, xylose, and galacturonic acid. We show how this natural product was characte

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31

Swanepoel, Hanita. "Profiling and modelling of triglycerides and volatile compounds in SA hake (merluccius capensis and merluccius paradoxus)." Thesis, Bloemfontein : Central University of Technology, Free State, 2011. http://hdl.handle.net/11462/156.

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Thesis (D. Tech. Environmental health) -- Central University of technology, Free State, 2011<br>Apart from being the primary food source of many cultures around the world, fish contains notable amounts of essential fatty acids that are required by the human body, thus making fish a vital part of the human diet. In South Africa Cape hake is a well-known and highly consumed local fish species, which is transported from coastal areas countrywide where the fresh fish are displayed on ice in various retail stores. Fish is known to be highly susceptible to spoilage and, as a result, the maintenance

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Shilenge, Lebogang Brenda. "Microbial hazards associated with meat processing in butcheries within Mangaung Metropolitan Municipal area." Thesis, Bloemfontein: Central University of Technology, Free State, 2014. http://hdl.handle.net/11462/248.

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Thesis (M. Tech. (Environmental Health)) - Central University of Technology, Free State, 2014<br>In the battle to sustain and produce quality food that is safe and affordable, the limited legislative and regulatory environment continues to allow opportunities for food to become contaminated during processing. The degree of contamination distributed over the final food product (including meat products) depends upon several factors that include knowledge and behaviour of the food handlers, equipment, the hygiene habits of personnel, and the monitoring that takes place at food processing plants (

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33

Mogotsi, Lerato Bonolo. "An assessment of the lipopolysaccharide toxicity of rough and smooth escherichia coli strains cultivated in the presence of zygosaccharomyces bailli." Thesis, Bloemfontein : Central University of Technology, Free State, 2011. http://hdl.handle.net/11462/151.

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Thesis (M. Tech. Environmental health) -- Central University of technology, Free State, 2011<br>In nature microorganisms do not exist alone, but in association with one another. These kinds of associations can also be found in food industries, where cells of the same or different species can attach to pipes (biofilm formation) and a variety of surfaces in food processing environments and in food product such as yoghurt which can contain both yeast and bacteria originating from the starter culture as well as fruit. To control food spoilage organisms and food-borne pathogens preventative measur

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34

Babapour, Ayda Barid, and Maryam Nadalipour Gavitar. "Investigation of yeast Grown in SSF Dring Biothanol Production from Lignocellusosic Material." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-16498.

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Ethanol produced from lignocellulosic biomass has the potential to become a promisingalternative to gasoline. In this work the simultaneous saccharification and fermentation (SSF)technology was applied for ethanol production from hardwood with focus on cell growth,ethanol production and contamination.The SSF was performed at PH 5.5 and 35°C for different suspended solid concentrations(8%, 10% and 12%) of pretreated birch slurry which contained 16 % total suspended solids.Two different hexose fermenting yeast strain (Ethanol Red) and pentose fermenting yeaststrain were used.Quantifying the conc

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35

Geary, Phillip M. "On-site system effluent source tracking using geochemical and microbial tracers in a coastal catchment." View thesis, 2004. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20051223.123840/index.html.

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36

Slabbert, Róan Stephanus. "Evaluation of acid resistance in food-associated bacteria." Thesis, Bloemfontein : Central University of Technology, Free State, 2011. http://hdl.handle.net/11462/147.

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Thesis (M. Tech. Environmental health) -- Central University of technology, Free State, 2011<br>Although the application of low pH is common practice in food preservation, the emergence of acid tolerance has been reported world-wide amidst a growing concern that preservation with weak acids, such as organic acids may be influenced as a result of food-borne bacteria becoming acid tolerant or acid resistant. The present study was conducted to assess the acid tolerance of a wide range of bacterial species and consequently the sustainable application of organic acids as food preservatives in part

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Ly, Thuy M. "Arsenic Contamination in Groundwater in Vietnam: An Overview and Analysis of the Historical, Cultural, Economic, and Political Parameters in the Success of Various Mitigation Options." Scholarship @ Claremont, 2012. http://scholarship.claremont.edu/pomona_theses/41.

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Although arsenic is naturally present in the environment, 99% of human exposure to arsenic is through ingestion. Throughout history, arsenic is known as “the king of poisons”; it is mutagenic, carcinogenic, and teratogenic. Even in smaller concentrations, it accumulates in the body and takes decades before any physical symptoms of arsenic poisoning shows. According to the World Health Organization (WHO), the safe concentration of arsenic in drinking water is 10 µg/L. However, this limit is often times ignored until it is decades too late and people begin showing symptoms of having been poi

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Mokoena, Kingsley Katleho. "Airborne microbiota and related environmental parameters associated with a typical dairy farm plant." Thesis, Bloemfontein : Central University of Technology, Free State, 2013. http://hdl.handle.net/11462/160.

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Thesis (M. Tech. (Environmental health: Food safety )) - Central university of Technology, Free State, 2013<br>Food processing plants and agricultural environments have a long-standing history of being known to provide a conducive environment for the prevalence and distribution of microorganisms which emanate as a consequence of activities undertaken in such premises. Microorganisms in the aforementioned environments may be found in the atmosphere (airborne), and/or on food contact surfaces. Airborne microorganisms from food handlers and in food products and raw materials (as part of bioaeros

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Fox, J. Trent. "Prevalence, characterization and intervention of Escherichia coli o157 in finishing cattle." Diss., Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/446.

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40

Ding, Kaijie. "Arsenite removal from contaminated water by different sorbent materials." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-273970.

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Arsenic (As) contamination is a worldwide problem, and millions of people are suffering from it. There are two major inorganic forms of As in waters: arsenate(V) and arsenite(III), and adsorption to a sorbent material may be an efficient method to handle them. In this study, we focused on As(III), the more toxic form, which predominates under reducing conditions. The As(III) removal properties of four sorbent materials: hydrotalcite, Mg−Al layered double hydroxide, amorphous aluminium hydroxide and amorphous titanium oxide, are examined from the following viewpoints: As(III) adsorption, the ef

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Moshoeshoe, Senate Louisa. "Incidence of Listeria monocytogenes in milk from producers in the Maseru area." Thesis, [Bloemfontein?] : Central University of Technology, Free State, 2014. http://hdl.handle.net/11462/208.

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Thesis (M. Tech. (Biomedical Technology)) -- Central University of technology, Free State, 2013<br>The objective of this study was to determine the prevalence of Listeria monocytogenes and also to assess the general hygiene of fresh milk in the Maseru area, Lesotho. A total of 200 milk samples (40 pasteurised and 160 raw milk samples) were used for the research. Raw milk samples were collected from the local farmers at the Dairy reception as they bring it for selling. Pasteurised milk samples were bought from different milk selling points in the Maseru area. The total aerobic plate count, tot

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Ramirez, Christina M. "Water security and its importance in protecting public health." Scholarly Commons, 2012. https://scholarlycommons.pacific.edu/uop_etds/820.

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43

Jackson, Linda. "Food safety management and associated food handler behaviours in a prominent South African entertainment facility." Thesis, [Bloemfontein?] : Central University of Technology, Free State, 2011. http://hdl.handle.net/11462/143.

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Thesis (M. Tech. Environmental health) -- Central University of technology, Free State, 2011<br>Millions of people in South Africa eat out every day, utilising the food service sector. Although the lack of an effective reporting system makes it difficult to know how many of these people suffer from food-borne illness, statistics from the developed countries show that this number may be significant. There is, therefore, the need to ensure that the food service sector, which encompasses fast food outlets, hotels and similar accommodation outlets offering food and beverage services, restaurants,

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Mücke, Naieli. "Sensibilidade celular e de biofilme de Enterococcus sp. aos desinfetantes de uso industrial." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/2184.

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CNPQ<br>Enterococcus sp. podem ser isolados de seres humanos, animais e ambiente; possuem alta tolerância a fatores extremos como pH, temperatura e concentração salina. Desempenham papel importante como cultura starter em vários produtos como iogurtes e queijos, além de serem produtores de enterocinas. Contudo, é crescente seu potencial como agentes causadores de sérias infecções, podendo adquirir alta resistência a antimicrobianos e biocidas. Os equipamentos na indústria alimentícia estão propensos à alta contaminação microbiológica devido à presença de substratos para os microrganismos, e

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Linde, Susanna Gezina. "Die ontwikkeling van 'n moniteringsprogram vir roumelkgehalte as deel van die gehaltebestuurstelsel van 'n melkprosesseerder in die Noordwes-provinsie." Thesis, Bloemfontein: Central University of Technology, Free State, 2008. http://hdl.handle.net/11462/264.

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Thesis (M. Tech.) -- Central University of Technology, Free State, 2008<br>In this study, the development and implementation of a quality-monitoring program for raw milk as part of the quality management system of a milk processor was studied. Various aspects that contribute to raw milk quality were also included. Ten factors that are important in the production of good quality raw milk were summarised in the Ten Point Plan for the production of quality raw milk. Thirty-eight producers, who have supplied raw milk to the processor over a period of five year, were involved in this program

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Tomazzoni, Giancarlo. "Monitoração da contaminação de diesel usando a espectrofluorimetria." Universidade Tecnológica Federal do Paraná, 2012. http://repositorio.utfpr.edu.br/jspui/handle/1/894.

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CNPq; FAPESB<br>O uso de combustíveis adulterados acarreta danos aos veículos, desgaste de peças, aumento do consumo de combustível, bem como da emissão de material particulado e de gases de exaustão. Os métodos usados para determinação da adulteração do diesel, em geral, não são rápidos, incluem diversas etapas de preparação de amostras, apresentam alto custo de análises e requerem equipamentos complexos com necessidades constantes de calibração e aferição. Além de demandar tempo para coleta e logística das amostras. Com o propósito de avaliar possíveis adulterações de óleo diesel, com óleo v

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Ohara, Mitsuko Taba. "Aplicação do cloreto de trifeniltetrazólio no teste de limite microbiano em medicamentos e cosméticos." Universidade de São Paulo, 1992. http://www.teses.usp.br/teses/disponiveis/9/9139/tde-10022015-150223/.

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O cloreto de trifeniltetrazólio (TTC) foi empregado neste trabalho visando padronização de método alternativo para o teste de limite microbiano em medicamentos e cosméticos, com redução no tempo de análise, além de possibilitar a aplicação da técnica de semeadura em profundidade em amostras hidroinsolúveis com opacidade e carga contaminante menor que 102 UFC/g (mL).Na técnica de tubos múltiplos, a aplicação do corante não possibilitou a redução do tempo de incubação, pois a sensibilidade para detecção de suspensão bacteriana por meio de coloração do trifenilformazano foi de 108 UFC/mL após 1 h

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Painter, Brett D. M. "Optimisation of permeable reactive barrier systems for the remediation of contaminated groundwater." Diss., Lincoln University, 2005. http://hdl.handle.net/10182/12.

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Permeable reactive barriers (PRBs) are one of the leading technologies being developed in the search for alternatives to the pump-and-treat method for the remediation of contaminated groundwater. A new optimising design methodology is proposed to aid decision-makers in finding minimum cost PRB designs for remediation problems in the presence of input uncertainty. The unique aspects of the proposed methodology are considered to be: design enhancements to improve the hydraulic performance of PRB systems; elimination of a time-consuming simulation model by determination of approximating functions

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Nkhebenyane, Jane Sebolelo. "Microbial hazards associated with food preparation in Central South African HIV/Aids hospices." Thesis, Bloemfontein : Central University of Technology, Free State, 2010. http://hdl.handle.net/11462/135.

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Thesis (M. Tech.) -- Central University of Technology, Free State, 2010<br>South Africa currently faces one of the highest HIV prevalence rates in the world. As this prevalence rises, the strain placed on its hospitals is likely to increase due to the shortage of beds. The devastating effects of HIV/AIDS initiated the establishment of a hospice which is a non-governmental organisation whose goal is the provision of care for terminally ill patients, either in their homes, in hospitals or in a hospice’s own in-patients wards. Part of the hospice’s mission is to offer palliative care without cha

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Nhlapo, Nthabiseng. "Hygiene and nutritional content of the National School Nutrition Programme in Bloemfontein, South Africa." Thesis, [Bloemfontein?] : Central University of Technology, Free State, 2013. http://hdl.handle.net/11462/180.

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Thesis (M. Tech. (Environmental Health)) -- Central University of technology, Free State, 2013<br>Malnutrition and concomitant infections are major contributing factors to child morbidity and mortality in developing countries such as South Africa. Globally, children benefiting from school feeding programmes are generally from communities with low socio-economic statuses. The meals provided through feeding schemes, such as the National School Nutrition Programme (NSNP) in South Africa, are aimed at significantly supplementing the beneficiaries’ daily energy and nutrient requirements. The possi

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