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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
141

Chlordane contamination in the Chattahoochee River : assessment of existing data and outline for future research

Heiner, George Benjamin 05 1900 (has links)
No description available.
142

The applied use of membrane filter techniques to isolate viral particles from community water supplies

Dotson, Paul David January 1980 (has links)
Many methods for the quantitative concentration of small amounts of viruses from natural water supplies have been considered. One of the most promising of these is the adsorption of viruses onto a 0.45pm cellulose nitrate membrane filter apparatus. A quantity of water is passed through the filter by gravity or pressure filtration. The viruses present in the water are adsorbed onto the membrane and are subsequently eluted by the use of a beef extract eluant. The virus-containing elution is then layered upon tissue culture, preferably the BGM cell line, for isolation by the plaque method. The isolated virus is then identified by serological techniques.The research presented here utilized the cellulose nitrate membrane filter system for the detection of viruses from local waterways and sewage treatment influents and effluents. Examination of the water was done for the Enterovirus group of viruses consisting primarily of the Echovirus, Coxsackievirus, and Poliovirus groups.Although viral cytopathic effect was detectable in a few cell cultures innoculated with collected water samples, no virus was isolated and identified by serological techniques or electron microscopy. The use of continuous cell lines produced numerous problems during this study. Subsequently, any viruses in positive CPE flasks could not be repassaged in BGM cultures. No viruses could be identified by neutralization in tissue culture. Identification of the positive flasks could not be made by electron microscopy.
143

A manpower appraisal of the water treatment industry in a six county area of East Central Indiana

Kent, Robert L. January 1972 (has links)
This study was a comprehensive appraisal of the operators in municipal and industrial wastewater treatment plants and municipal water purification plants in a six county area of east central Indiana. The evaluation instrument asked for ninety-eight separate items of information pertaining to: Personal Data, Working Conditions and Responsibilities, and Operators' Opinions of Conditions Affecting the Water Treatment Industry.
144

Treatment of Mililani I Well Water By "Nanofiltration"

Chaturvedula, Durgaprasad 08 1900 (has links)
Two nanofiltration membranes, a thin film composite (TFC) membrane, a cellulose triacetate (CTA) membrane, were tested as pretreatment alternatives to extend the effective life of GAC at Mililani Wells I, Oahu, Hawaii. TFC membranes achieved excellent 1,2,3-trichloropropane (TCP), and 1,2-dibromo-3-chloropropane (DBCP) removal percentages whereas CTA membranes performed very poorly. TFC membranes showed promising signs of reducing total organic carbong (TOC) from the nanofiltration unit influent. In Mililani waters, only TCP is present in large amounts. It is suggested that further studies should be conducted where there is a chance of observing membrane's performance against high quantities of 1,2-dibromoethane (EDB), and DBCP. Due to the lack of trained personnel, not many TOC analyses were conducted. It is proven that nanofiltration is a viable treatment alternative and a pilot scale study should be conducted in the future taking economics also into consideration. / Thesis (M. S.)--University of Hawaii at Manoa, 1995. / Includes bibliographical references (leaves 46-48). / UHM: Has both book and microform. / Water Resources Research Center
145

Synthesis of porous, magnetic chitosan beads and application to cadmium ion adsorption

Tzu-Yang, Hsien 27 July 1992 (has links)
Graduation date: 1993
146

Evaluation of TaqMan real-time PCR for the detection of viable Cryptosporidium parvum oocysts in environmental water samples

Cameron, Melissa A. January 2007 (has links)
Thesis (M.S.)--University of South Florida, 2007. / Title from PDF of title page. Document formatted into pages; contains 65 pages. Includes bibliographical references.
147

The effect of pour-through water filtering devices on the fluoride concentration in drinking water thesis submitted in partial fulfillment ... for the degree of Master of Science in Pediatric Dentistry ... /

Murshid, Ebtissam Zakaria. January 1995 (has links)
Thesis (M.S.)--University of Michigan, 1995. / Includes bibliographical references.
148

Dispersion of fullerenes in natural water and their behavior in water treatment process

Hyung, Hoon. January 2008 (has links)
Thesis (Ph.D.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Jae-Hong Kim; Committee Member: Joseph hughes; Committee Member: Michael Bergin; Committee Member: Seung Soon Jang; Committee Member: Vernon Snoeyink.
149

Antibiotics in water treatment the role of water quality conditions on their fate and removal during chlorination and nanofiltration /

Shah, Amisha D. January 2008 (has links)
Thesis (Ph.D)--Civil and Environmental Engineering, Georgia Institute of Technology, 2009. / Committee Co-Chair: Huang, Ching-Hua; Committee Co-Chair: Kim, Jae-Hong; Committee Member: Li, Qilin; Committee Member: Mulholland, James; Committee Member: Wine, Paul; Committee Member: Yiacoumi, Sotira. Part of the SMARTech Electronic Thesis and Dissertation Collection.
150

Concentrations [sic] levels of fluoride in bottled drinking water and filtered water using home filtration systems

Johnson, Sissy Daniel, January 2000 (has links)
Thesis (M.S.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains vi, 47 p. : ill. (some col.) Vita. Includes abstract. Includes bibliographical references (p. 44-46).

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