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Dissertations / Theses on the topic 'Microbial and chemical quality'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Paul, Craig M. "Microbial and Chemical Affects on Leachate from Calcareous Soils Treated with Wastewater Effluent." BYU ScholarsArchive, 2005. https://scholarsarchive.byu.edu/etd/462.

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Increasing human populations are placing greater strain on water resources, prompting the use of treated wastewater effluent for irrigation in some areas, including the desert regions of the Western United States. To determine the potential effects of using secondary effluent for irrigation, we applied wastewater effluent and irrigation waters to natural and artificially constructed calcareous soils in greenhouse and field lysimeters, and in soil columns. The leachate from one field lysimeter contained increased fecal coliform counts than the effluent. Leachate coliform counts were decreased o

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2

Ajibode, Oluyomi Marriet. "Effect of Residence Time on Microbial and Chemical Quality of Reclaimed Water In Urban Infrastructures." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/228512.

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The goal of this study was to assess the effect of residence time on the chemical and microbial quality of reclaimed water in two distribution systems located in southern Arizona. Utility A produced Class A water and utilized chlorine as a means of disinfection whereas Utility B produced Class A+ water and utilized UV radiation as a means of disinfection. Water-based pathogens were consistently detected in both distribution systems beyond the point of compliance, while microbial indicators like Escherichia coli was only detected in Utility B suggesting that treatment eliminated waterborne path

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Barata, André Bernardo Antunes dos Santos Neves. "Microbial ecology of sour rotten grapes and their influence on chemical and sensorial wine quality." Doctoral thesis, ISA/UTL, 2011. http://hdl.handle.net/10400.5/3875.

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Doutoramento em Engenharia Alimentar - Instituto Superior de Agronomia<br>The grape berry microbiota is deeply influenced by the sanitary status of grapes. In sound grapes the most frequent yeast species were basidiomycetes, Aureobasidium pullulans, Candida zemplinina and Hanseniaspora uvarum. Sour rotten grapes were mostly colonised by C. zemplinina, H. uvarum, Issatchenkia spp. and Zygoascus hellenicus. The presence of minoritary populations of Zygosaccharomyces bailii was only found in damaged grapes. The acetic acid bacteria Gluconobacter spp. and Gluconoacetobacter spp. were isolated from

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Kolam, Joel. "Microbial and physico-chemical assessment of on-site water supply systems /." View thesis, 2003. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20060510.114454/index.html.

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Thesis (M. Sc.) (Hons) -- University of Western Sydney, 2003.<br>"A thesis submitted in partial fulfilment of the requirements for the degree of Master of Science (Hons.), University of Western Sydney, Australia, Water Research Laboratory, Centre for Water & Environmental Technology." Includes bibliography : leaves 168 - 183 and appendices.

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5

Ramanujam, Ashwin. "Development of a Standalone Electrochemical Microbial Sensor." Ohio University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1596125402639014.

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6

Wright, Debra Lee. "A Microbial and Chemical Water Quality Study of Sixteen Individual Wells in Rural Southern Cochise County, Arizona." Thesis, The University of Arizona, 2010. http://hdl.handle.net/10150/193419.

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This paper is part of a larger water quality study for Arizona (Marrero-Ortiz et al., 2009) and looks more closely at 22 water samples from 16 wells less than 250 feet deep in rural areas of southern Cochise County, Arizona. Nine wells were positive for total coliforms, four wells tested positive for fecal coliforms and one well tested positive for Escherichia coli. Nine wells were positive for enterococci and 13 were positive for Aeromonas hydrophila, some with very high levels. Fourteen of 21 possible metals were detected. All 16 wells contained barium. Ten wells were above limits for at lea

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7

Marrero-Ortiz, Roberto. "Assessment of the Microbial and Chemical Water Quality of Individual and Small System Groundwater Supplies in Arizona." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/193960.

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ASSESSMENT OF THE MICROBIAL AND CHEMICAL WATER QUALITY OF INDIVIDUAL AND SMALL SYSTEM GROUNDWATER SUPPLIES IN ARIZONA Roberto Marrero-Ortiz, Ph.D. ABSTRACT Arizona has more non-disinfected drinking water supply systems than any other state in the U.S. All of these systems depend on groundwater that is subject to contamination by waterborne and waterbased pathogens. The goal of this project was to assess the microbial quality of non-disinfected individual and small groundwater drinking water systems in Arizona. In addition, data was collected on the occurrence of heavy metals. The mic

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8

Dejene, Mashilla. "Grain storage methods and their effects on Sorghum grain quality in Hararghe, Ethiopia /." Uppsala : Dept. of Ecology and Crop Production Science, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/a454.pdf.

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Coetzee, Gerna (Gertruida Johanna Maria). "Effects of feeding omega-3 fatty acids and vitamin E on the chemical composition and microbial population of broiler meat." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51736.

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Thesis (MScAgric) -- University of Stellenbosch, 2000.<br>ENGLISH ABSTRACT: Lipids remain one of the most important nutrients required by broilers. The growing awareness that some Western societies have too high a dietary ratio of n-6/n-3 polyunsaturated fatty acids is of direct relevance to broiler nutrition and lipid metabolism. Meaningful quantities of n-3 polyunsaturates have been incorporated into major poultry tissues, so that the production of broiler meat with high n-3 polyunsaturates becomes advantageous for the broiler industry as they are perceived as having a 'healthier' lipid

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Diawuo, Felix. "Water Supply of Accra, with Emphasis on Sachet Water." Thesis, KTH, Vattenförvaltning, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-99333.

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This project seeks to assess the impact of the sachet water industry on the health, socio-economic and the environmental situation of the inhabitants of Accra, the capital city of Ghana. In addressing the situation, the driving forces which have fuelled the shift of consum-er taste from the normal tap water and the traditional hand-tied-ice water products to the plastic sachet water (commonly known in as "Pure Water") are identified. Lack of access to continuous flow of improved water and the perceived poor quality of the urban water supply system as results of poor management structure are id

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11

McAdams, Thomas James. "The determination of microbial quality and presence of pathogens and chemical contaminants in aquacultured rainbow trout (Oncorhynchus mykiss) fillets and whole fish from different aquaculture production systems." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/44981.

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Qualitative and quantitative levels of human pathogens (Listeria monocytogenes, Clostridium botulinum, Salmonella species, Vibrio cholerae, Yersinia enterocolitica and Y. pseudotuberculosis) and general microbial quality of whole aquacultured rainbow trout (Oncorhynchus mykiss) were in compare differing aquacultural systems and growing seasons. Listeria levels and general microbial quality were determined on fillets from three facilities and compared to whole fish. Secondly, in each facility and season, levels of select minerals and heavy metals in edible tissue were determined. Aerobic plate

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Dobrowsky, Penelope Heather. "Quality assessment of domestic harvested rainwater in the peri-urban region of Kleinmond, Western Cape and the optimisation of point-of-use treatment systems." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86278.

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Thesis (MSc)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Domestic rainwater harvesting (DRWH) refers to the collection and storage of rainwater for domestic purposes and in an effort to achieve the Millennium Development Goals (MGD), the South African government has started an initiative where DRWH tanks are financed in sustainable housing schemes in an aim to provide an additional water source directly to households. Although many provinces, including parts of the Eastern Cape and KwaZulu Natal, have been using harvested rainwater as a potable water source, there are a limited number

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Law, Audrey. "EVALUATING THE EFFECTS OF ORGANIC AND CONVENTIONAL INPUTS ON SOIL CHEMICAL AND BIOLOGICAL PROPERTIES IN A FOUR-YEAR VEGETABLE ROTATION AND THE INVESTIGATION OF SOIL MICROBIAL PROPERTIES ON PLANT GENE EXPRESSION." UKnowledge, 2009. http://uknowledge.uky.edu/gradschool_diss/704.

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The objective of this research was to determine the effects of conventional inputs on soil chemical and biological properties compared to organic systems in a four year vegetable rotation. Tillage and cover crops were the same in all treatments to avoid confounding factors often present in similar research. Additional experiments investigated plant gene expression in organic and conventional management systems and in soils with decreased microbial diversity. Experimental plots were prepared in the spring of 2004; four replications of three management treatments, organic, low-input and conventi

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Zorel, Daiane. "Atributos químicos e microbiológicos de solo cultivado com cana-de-açúcar sob manejo convencional e orgânico." Universidade Federal de São Carlos, 2011. https://repositorio.ufscar.br/handle/ufscar/115.

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Made available in DSpace on 2016-06-02T18:57:37Z (GMT). No. of bitstreams: 1 4140.pdf: 1455295 bytes, checksum: d12f47602a7d5a5650b198ab17cd32a0 (MD5) Previous issue date: 2011-10-25<br>The identification of soil quality indicators that demonstrate the alterations occurred in areas under organic management is important to determine the sustainability of this kind of cultivation. The soil microbial biomass and activity have been considered as important indicators of soil quality, especially when different management systems are employed in agroecosystems. In this context, the aim of this work

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Colodro, Gilberto. "Recuperação de solo de area de emprestimo com lodo de esgoto." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257227.

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Orientador: Carlos Roberto Espindola<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola<br>Made available in DSpace on 2018-08-05T08:09:18Z (GMT). No. of bitstreams: 1 Colodro_Gilberto_D.pdf: 1303522 bytes, checksum: 0ad772710ae2e3db6a985db59816eabf (MD5) Previous issue date: 2005<br>Resumo: Foi avaliado o efeito do lodo de esgoto na recuperação de um subsolo degradado em decorrência da construção da Usina Hidrelétrica de Ilha Solteira, por retirada de espessa camada de solo original (área de empréstimo), há mais de 30 anos. A área está localizada no mu

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Lahdou, Gilbert. "Microbial degradation of dibenzoate plasticizers." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=98983.

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Earlier work with the dibenzoate plasticizers, di(propylene-glycol) dibenzoate (D(PG)DB) and di(ethylene-glycol) dibenzoate (D(EG)DB), had shown that one yeast could hydrolyze one of the ester bonds of these compounds resulting in an accumulation of the monoesters, di(propylene-glycol) monobenzoate or di(ethylene-glycol) monobenzoate, respectively. These monoesters exhibited an acute toxicity greater than that of the parent compounds and greater than the metabolites of the widely used phthalate and adipate plasticizers.<br>In the present study, it was shown that the degradation of dibenzoate p

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17

Abín-Fuentes, Andrés. "Mechanistic understanding of microbial desulfurization." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81675.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 136-143).<br>The increasing global levels of sulfur content in crude oil have motivated the development of alternate desulfurization technologies. Microbial desulfurization or biodesulfurization (BDS) has gained interest due to the ability of certain biocatalysts to desulfurize compounds that are recalcitrant to the currently employed hydrodesulfurization (HDS) technology. Two of the major obstacles to commercialization

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Kunjapur, Aditya Mohan. "Microbial engineering for aldehyde synthesis." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98710.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 140-151).<br>Microbes have been engineered to produce many useful classes of chemicals from renewable carbon sources instead of from finite petroleum reserves. Aldehydes represent a class of chemicals that has been challenging to obtain using microbes given the rapid conversion of aldehydes into their corresponding alcohols that occurs naturally. Microbes are thought to have evolved numerous endogenous enzymes re

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Zhu, Kechen, and Kechen Zhu. "Chemical and Microbial Processes for Rhodium Recovery." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/625349.

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This is the first report that demonstrates the ability of anaerobic methanogenic granular sludge to reduce Rh(III) to Rh(0). Recovery of rhodium(Rh) during anaerobic incubations under abiotic and biotic condition with different electron donors was studied. H2 and formate reduced Rh(III) to Rh(0) nanoparticles(NPs) in the absence of microorganisms. However, the presence of microorganism was crucial for Rh(III) reduction with ethanol. Results of X-ray powder diffraction (XRD) and transmission electron microscopy (TEM) confirmed the formation of Rh(0) NPs and indicated the localization and morpho

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TROMBETE, Felipe Machado. "Avalia??o da qualidade e pesquisa de aflatoxina M1 em queijo parmes?o ralado." Universidade Federal Rural do Rio de Janeiro, 2012. https://tede.ufrrj.br/jspui/handle/jspui/1534.

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Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-04-18T19:29:49Z No. of bitstreams: 1 2012 - Felipe Machado Trombete.pdf: 1177577 bytes, checksum: 5ad9ebc406a8cd78d15ebfdc7acb27ff (MD5)<br>Made available in DSpace on 2017-04-18T19:29:49Z (GMT). No. of bitstreams: 1 2012 - Felipe Machado Trombete.pdf: 1177577 bytes, checksum: 5ad9ebc406a8cd78d15ebfdc7acb27ff (MD5) Previous issue date: 2012-02-29<br>CAPES<br>The grated parmesan cheese is a food commonly consumed in Brazil and, in the last decade, few studies evaluated their quality. The aim of this research was to evaluate the adeq

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Yano, Toshihiro. "Microbial utilization of poor quality biomass." Kyoto University, 1991. http://hdl.handle.net/2433/168777.

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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである<br>Kyoto University (京都大学)<br>0048<br>新制・論文博士<br>農学博士<br>乙第7416号<br>論農博第1631号<br>新制||農||587(附属図書館)<br>学位論文||H3||N2267(農学部図書室)<br>UT51-91-C149<br>(主査)教授栃倉辰六郎, 教授外村辨一郎, 教授木村光<br>学位規則第5条第2項該当

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Gaulin, Jean-Philippe. "Selective caffeine removal by microbial consortia." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80272.

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Coffee processing presents a considerable waste disposal problem, mainly because of the large volumes generated and the chemical composition of the by-products, particularly the caffeine levels. The use of Pseudomonas putida IF-3, a caffeine-degrading microorganism, in a microbial consortium for bioremediation of caffeine found in coffee wastes was investigated. Caffeine degradation was observed in fed-batch reactor experiments with caffeine as sole source of carbon and nitrogen. Metabolic regulation and caffeine removal potential by Pseudomonas putida IF-3 were investigated by suppleme

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Sauvageau, Dominic. "Microbial esterase and the degradation of plasticizers." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81563.

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Previous studies have shown that the biodegradation of di-ester plasticizers can lead to the accumulation of toxic recalcitrant metabolites. Rhodococcus rhodochrous ATCC 13808 is a bacterium known to degrade plasticizers. The first steps of the biodegradation mechanism consist of esterase-mediated hydrolyses. The present study focused on characterizing the esterase produced by R. rhodochrous and defining its impact on the rate of hydrolysis of different di-ester plasticizers.<br>By means of esterase activity and growth studies, it was possible to determine that the esterase produced by

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Alvarez, Luis Manuel 1975. "Modeling and optimization of microbial desulfurization processess." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/85282.

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Cloete, Anya. "Microbial quality and safety of ostrich meat." Thesis, University of the Western Cape, 2010. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_3372_1319792808.

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The aim of this study was to determine the quality of slaughtered ostrich meat and to evaluate the ostrich slaughter process, to determine whether ostrich meat are contaminated by the in-house slaughtering practices and if prevalence of microorganisms increase with the succession of the slaughter process. Furthermore, the presence of specific foodborne pathogens and spoilage organisms was explored by means of molecular and conventional methods to determine whether ostrich meat is a source of these microorganisms. Data obtained from this study provides some baseline information that could be us

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Sherchan, Samendra Prasad. "Monitoring Microbial Water Quality via Online Sensors." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/293470.

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To protect public health, detection and treatment technologies have been improved to monitor and inactivate pathogens in drinking water. The goal of this dissertation is to evaluate and utilize multiple online sensors and advanced oxidation processes to document both the detection as well as destruction of microbial contaminants in real-time. Reviews of rapid detection technologies for real-time monitoring of pathogens in drinking water and advanced technologies to inactivate pathogens in water are shown in Appendices A and B. The study in Appendix C evaluated the efficacy of real-time sensor

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Rose, Joan B., Gwo-Shing Sun, Bart C. Weimer, Rod S. Silverman, Charles P. Gerba, and Norval A. Sinclair. "Microbial Quality of Gray Water for Reuse." Arizona-Nevada Academy of Science, 1986. http://hdl.handle.net/10150/296368.

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From the Proceedings of the 1986 Meetings of the Arizona Section - American Water Resources Association, Hydrology Section - Arizona-Nevada Academy of Science and the Arizona Hydrological Society - April 19, 1986, Glendale Community College, Glendale, Arizona<br>As the scarcity of water and the price of municipal water inevitably increase, gray water reuse may become an inexpensive and viable alternative for such purposes as irrigation, lawn maintenance and water closet flushing. However, some problems do exist. The microbial and chemical content of gray water includes agents that may present

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El, Kadri Hani. "Microbial encapsulation and interactions in emulsions." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8192/.

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Previous studies indicated that emulsions with nano-sized droplets or nano-emulsions possess anti-microbial activity. The microstructure of water-in-oil-in-water (W1/O/W2) emulsions present interest for microbial encapsulation in food, cosmetic and pharmaceutical applications. Therefore microbe-emulsion interactions need to be characterised in order to fully explore the potential of such applications. This thesis investigated the effect of nano-emulsions on bacteria as well as W1/O/W2 emulsion feasibility for encapsulation and triggered release (altering osmotic pressure) of bacteria and in re

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Angathevar, Veluchamy Raaja Raajan. "Chemical sensors and instrumentation powered by microbial fuel cells." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/angathevarveluchamy/AngathevarVeluchamyR1207.pdf.

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Ruiz-Teran, Francisco. "Studies on microbial and chemical changes during tempe fermentation." Thesis, University of Reading, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284309.

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Elsayed, Somayah Sameer. "Chemical characterisation of microbial natural products from underexplored habitats." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=227107.

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Sheppard, John D. "Feedback control and the continuous phasing of microbial cultures." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74242.

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Continuous phasing is a technique for cell culturing that is able to reveal metabolic responses during the cycle of cell growth and division. This is accomplished by the correspondence between the periodic addition of a limiting nutrient and the time required for the growth of a generation of cells. The utility of the technique was greatly improved by the development of a feedback system to control the period of nutrient addition. The production of the biosurfactant surfactin was studied using Bacillus subtilis ATCC 21332. The feedback control system was effective in optimizing the period of n

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Anderton, A. "Microbial contamination of enternal feeds." Thesis, University of Glasgow, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377156.

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Jenkins, Kelly Matthew. "Chemical investigations of marine filamentous and zoosporic fungi and studies in marine microbial chemical ecology /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1998. http://wwwlib.umi.com/cr/ucsd/fullcit?p9907830.

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Cochrane, Roger Andrew. "Chemical mitigation of microbial pathogens in animal feed and ingredients." Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/20105.

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Master of Science<br>Grain Science and Industry<br>Cassandra K. Jones<br>Feed mill biosecurity is a growing concern for the feed industries, especially since the entry of Porcine Epidemic Diarrhea Virus (PEDV) to the United States. Porcine Epidemic Diarrhea Virus (PEDV) is primarily transmitted by fecal-oral contamination. However, research has confirmed swine feed and ingredients as potential vectors of transmission, so strategies are needed to mitigate PEDV in feed. The objective of the first experiment was to evaluate the effectiveness of various chemical additives to prevent or mitigate PE

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McClanahan, Robert Henry. "Microbial and chemical transformations of cannabinoids and related alkyl phenols /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487261919113874.

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Rodrigues, Rui Tiago de Lima. "Improving microbial chemical production strains through transcriptional regulatory network rewiring." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/30834.

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The production of chemicals using microbes is an area of significant interest for academia and industry. Significant resources are often devoted to strain development not only for the increase of productivity and yield but also for the improvement of robustness and tolerance to industrial production conditions. The genetic regulatory network of microbial organisms has evolved to maximize growth and survival in a variety of dynamic environmental conditions found in nature. Many of these responses can be suboptimal for the purpose of industrial manufacture of valuable bioproducts. A small number

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Grochowalski, Adam. "Microbial degradation of Di-ester plasticizers in the presence of surfactants." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80016.

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The degradation of common di-ester plasticizers, including di-2-ethylhexyl phthalate, di-2-ethylhexyl adipate and di-(propylene glycol) dibenzoate, by several strains of soil bacteria has been previously shown to lead to an accumulation of metabolites that are more toxic than the parent compounds. This research has shown that the pattern of degradation of these plasticizers can be significantly different in the presence of biosurfactants or synthetic surfactants. In particular, the additions of surfactin, sophorolipid or Pluronic L122 to cultures of Bacillus subtilis each resulted in in

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Aebi, Dominic. "Bioengineering studies for improved fermentative hydrogen production and microbial electricity generation." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107894.

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To supplement the non-renewable energy sources which are heavily relied-upon today, much research is being done to develop environmentally-friendly "Green Energy" and biologically-based "Bio Energy".The potential of microbial fuel cells (MFCs) as one of these next-generation energy sources was the first of two main aspects of this Master's research. Their suitability as a waste valorization by means of bioelectricity generation was investigated. The study employed a 50ml, single-chamber MFC system to compare substrate removal and electrical production using both minimal media and waste media d

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Wang, Hua. "Effects Of Microbial Attachment And Biofilm Formation On Microbiologically Influenced Corrosion." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1396543805.

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Kolam, Joel, University of Western Sydney, of Science Technology and Environment College, and School of Environment and Agriculture. "Microbial and physico-chemical assessment of on-site water supply systems." THESIS_CSTE_EAG_Kolam_J.xml, 2003. http://handle.uws.edu.au:8081/1959.7/544.

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The utilisation of rainwater tanks and bore wells are very common in many parts of rural Australia and Papua New Guinea. In Australia, on-site collection and storage of potable water for domestic use is carried out by approximately 30.4 percent of the rural population while 90% of the population in Papua New Guinea access water from on-site collection and storage of potable water. Few studies have monitored the quality of such water supplies on a seasonal and event associated basis. The aim of this study was to evaluate the microbiological and physio-chemical properties of the on-site domestic

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Gillam, Denise E. "Adaptation of subsurface microbial biofilm communities in response to chemical stressors." Cincinnati, Ohio : University of Cincinnati, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1069343445.

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GILLAM, DENISE ERICKA. "ADAPTION OF SUBSURFACE MICROBIAL BIOFILM COMMUNITIES IN RESPONSE TO CHEMICAL STRESSORS." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1069343445.

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Devanthi, Putu Virgina Partha. "Microbial encapsulation for enhancing soy sauce aroma development during moromi fermentation." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8835/.

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Moromi fermentation is an essential part of soy sauce production. This thesis aimed to characterize and control the growth and interaction of two predominant microorganisms, Tetragenococcus halophilus and Zygosaccharomyces rouxii for enhancing the aroma development during moromi fermentation. Antagonism was observed between T. halophilus and Z. rouxii, regardless of the inoculation sequence. However, sequential inoculation of Z. rouxii resulted in more complex aroma profile than simultaneous inoculation. To eliminate antagonism, chitosan-coated alginate and water-oil-water (W1/O/W2) double emu

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Chiralertpong, Ariya. "Modifying coffee quality by chemical manipulation." Thesis, University of Nottingham, 2010. http://eprints.nottingham.ac.uk/12425/.

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Chemical modification was applied to a coffee process by-product, silver skin, as well as raw coffee beans, with the aim to improve their aroma quality. Heat treatment in combination with sugar addition or enzyme treatment was applied to silver skin to encourage Maillard reactions. The manipulation applied to silver skin, however, did not give satisfactory results as the treatments neither caused significant increase in coffee aroma levels, nor yielded coffee aroma with quality resembling that of the real coffee. Chemical modification of raw Robusta coffee was carried out using fractionation a

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Chakraborty, Sagar Ph D. Massachusetts Institute of Technology. "Exploring volatile fatty acids (VFAs) as a novel substrate for microbial oil production." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98701.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Cost effective production of biofuels depends critically on feedstock cost and availability. As such, volatile fatty acids (VFAs) can play an important role in advancing sustainable biofuel production since they can be derived from low cost feedstock including gases and municipal solid waste. To this end, we studied fermentations of the oleaginous microbe Yarrowia lipolytica engineered for lipid overproduction. With

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Dhamankar, Himanshu Hemant. "Microbial synthesis of 3,4-dihydroxybutyric acid, 3-hydroxybutyrolactone and other 3-hydroxyalkanoic acids." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/87535.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, February 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 157-162).<br>Reducing dependence on petroleum feedstocks motivates engineering novel conversion technologies to convert biomass as a renewable resource into target value-added products. In this thesis we developed a new pathway for the microbial synthesis of 3-hydroxyalkanoic acids as biomass derived value-added products. 3-hydroxyalkanoic acids (3HAs) find applications as monomers for biodegradable poly

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Driessen, Jennifer Petronella 1973. "Microbial populations as indicators of river 'health'." Monash University, Dept. of Chemistry, 2000. http://arrow.monash.edu.au/hdl/1959.1/8780.

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Arno, Zachary. "Geochemical and Microbial Controls of Groundwater Quality in Northwestern Liberia." Thesis, University of Nevada, Reno, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10634173.

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<p> Years of conflict, political instability, and national emergencies have left behind very little information on water resources in Liberia, West Africa. This research leverages major ion and trace element analysis, <i> Escherichia coli</i> (<i>E. coli</i>) field tests, and high-throughput sequencing of microbial 16S rRNA genes to address these gaps and develop a comprehensive snapshot of groundwater quality in the region surrounding Monrovia, the capital city. A novel protocol to collect and preserve microbial DNA from groundwater under tropical field conditions lacking a constant source of

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Mujica-Alarcon, Juan Francisco. "Microbial dynamics at chemical interfaces within an organic contaminant plume in groundwater." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/20931/.

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