Last edited by Tutaur
Thursday, May 7, 2020 | History

4 edition of Endogenous decay sustaining PCE degradation and associated stable isotope effects found in the catalog.

Endogenous decay sustaining PCE degradation and associated stable isotope effects

Andrea J. Brown

Endogenous decay sustaining PCE degradation and associated stable isotope effects

by Andrea J. Brown

  • 129 Want to read
  • 32 Currently reading

Published by National Library of Canada in Ottawa .
Written in English


Edition Notes

Thesis (M.A.Sc.) -- University of Toronto, 2000.

SeriesCanadian theses = -- Thèses canadiennes
The Physical Object
FormatMicroform
Pagination2 microfiches : negative. --
ID Numbers
Open LibraryOL21316215M
ISBN 100612533700
OCLC/WorldCa50754894

Endogenous decay coefficient (k d) The endogenous decay coefficient is used for designing a complete-mix activated-sludge system. It accounts for the loss in cell mass due to oxidation of internal storage products for energy for cell maintenance, cell death, and predation by organisms higher in the food . Degradation of mRNAs plays an essential role in modulation of gene expression and in quality control of mRNA biogenesis. Nearly all major mRNA decay pathways characterized thus far in eukaryotes are initiated by deadenylation, i.e., shortening of the mRNA 3′ poly(A) tail.

degradation of ecosystems is leading to increased susceptibility to disease caused by these organisms. The adverse health impacts will be much greater in low-income populations than in richer nations. Thus, there is a great need for collective action to prevent environmental degradation. Polymer degradation is a change in the properties—tensile strength, color, shape, etc.—of a polymer or polymer-based product under the influence of one or more environmental factors such as heat, light or chemicals such as acids, alkalis and some changes are usually undesirable, such as cracking and chemical disintegration of products or, more rarely, desirable, as in.

Carbon Isotope Fractionation during Microbial Dechlorination of Trichloroethene, cis-1,2-Dichloroethene, and Vinyl Chloride: Implications for Assessment of Natural Attenuation. Conclusion 2 Degradation is minimal: No cis-DCE, the degradation product of TCE. Heaviest observed δ13C of TCE is ‐ ‰, EPA limit is ‐‰. At least 76% of the original PCE remains (Rayleigh equation). Most observed TCE heavier than observed PCE. As PCE is degraded to TCE, the lightest portion of the PCE is always what is.


Share this book
You might also like
Halpern

Halpern

Bird list

Bird list

mathematics of engineering

mathematics of engineering

Modern Methods of Plant Analysis / Moderne Methoden der Pflanzenanalyse / Volume 1 (Modern Methods of Plant Analysis / Moderne Methoden der Pflanzenanalyse)

Modern Methods of Plant Analysis / Moderne Methoden der Pflanzenanalyse / Volume 1 (Modern Methods of Plant Analysis / Moderne Methoden der Pflanzenanalyse)

China and the Chinese

China and the Chinese

Whatever happened to job security?

Whatever happened to job security?

idea of order

idea of order

Advanced trigonometry

Advanced trigonometry

Tax reform, the state and local response, and proposed legislation

Tax reform, the state and local response, and proposed legislation

works of Engelbertus Schut Leydensis (ca 1420-1503)

works of Engelbertus Schut Leydensis (ca 1420-1503)

Baptismal fonts

Baptismal fonts

Wisdom in education

Wisdom in education

View of the practicability and means of supplying the city of Philadelphia with wholesome water.

View of the practicability and means of supplying the city of Philadelphia with wholesome water.

In spite of hell

In spite of hell

Endogenous decay sustaining PCE degradation and associated stable isotope effects by Andrea J. Brown Download PDF EPUB FB2

ENDOCENOUS SUSTAINING PCE DEGRADATION ASSOCIATED STABLE EFFECTS. ENDOCENOUS DECAY SUSTAINING PCE DEGRADATION AND ASSOCIATED STABLE ISOTOPE EFFECTS.

Andrea J. Brown. A tbesis submitted ia coaformity witb the requirements for the degree of Master of Applied Science Graduate Department of Civil Engineering University of Toronto. Endogenous processes produce inert materials (endogenous decay products) which contribute a large fraction of the sludge produced in activated sludge treatment.

The degradation of PCE, TCE, while Ni is expected to form sulphides structurally closely associated to FeS, giving the effect of decreased transformation rates degradation reaction rates are slow. Chlorinated ethanes and ethenes present in environmental water in favourable conditions may be degraded to harmless products.

Under less Cited by: Long-term tetrachlorethene degradation sustained by endogenous cell decay Article in Journal of Environmental Engineering and Science 4(1) February. Fungi can cause decay and ultimate destruction of Standing trees, fallen timber, and all sorts of timber constructions, which can be expensive.

It was probably dry rot that made the Speedwell so. A thermodynamic analysis of aerobic biological treatment of wastewater is presented.

Previous thermodynamic models have only considered the net endogenous decay of biomass. Thermodynamically, endogenous decay is the metabolism of the biomass itself to sustain life.

Its metabolism results in oxidation and resynthesis as well as release of suspended organic debris that is refractory in the biological. Cooper DA, Corcoran PL () Effects of mechanical and chemical processes on the degradation of plastic beach debris on the island of Kauai, Hawaii.

Mar Pollut Bull 60(5)– Google Scholar Cosgrove L, McGeechan PL, Robson GD, Handley PS () Fungal communities associated with degradation of polyester polyurethane in soil.

e Pergamon War. ScLTech. Vol. 39, No. I, pp." IAWQ Published by ElsevierScience Ltd Printed inGreatBritain. Allrightsreserved /99 $19'00 + 0'00 PII: S(98)OOX MAINTENANCE, ENDOGENEOUS RESPIRATION, LYSIS, DECAY AND PREDATION Mark C.

Van Loosdrecht* and Mogens Henze** '" Kluyver Institute for Biotechnology, TV-Delft, Julianalaan. The cost of environmental degradation: case studies from the Middle East and North Africa / Lelia Croitoru and Maria Sarraf. ISBN — ISBN (electronic) 1. Environmental degradation—Middle East—Case studies.

Environmental degradation— Africa, North—Case studies. Environmental degradation can lead to a scarcity of resources, such as water and farmable. Extreme weather events, such as severe flooding, increase the spread of waterborne diseases, such as malaria and diarrhoea.

The effects of the major environmental problems on both health and productivity are: a. The determination of compound-specific stable isotope ratios is a promising new tool to assess biodegradation of organic compounds in groundwater.

In this study, the occurrence of carbon isotope fractionation during dechlorination of tetrachloroethene (PCE) to ethene was evaluated in a PCE-contaminated aquifer and in a microcosm that was based on aquifer material from the site.

PCE degradation rates from sampling campaigns after the thermal remediation event range from to yr accounting for isotope effects associated with degradation, sorption, and. Description, Properties, and Degradation of Selected Volatile Organic Compounds Detected in Ground Water— A Review of Selected Literature By Stephen J.

Lawrence Prepared in cooperation with the Agency for Toxic Substances and Disease Registry, U.S. Department of Health and Human Services Open-File Report – U.S. Department of the. Data for both units showed apparent slow biodegradation of the endogenous residue.

Modeling the batch tests indicated first-order endogenous residue decay rates of d −1 and d −1 for the anaerobic unit and the alternating aerated and non-aerated conditions, respectively. The impact of the degradation process was most evident. The reason is that the kinetic Cl isotope effect acts on the cleaved chloride so that the chlorine isotope ratio of TCE is expected to match that of PCE (as experimentally confirmed by Cretnik et.

Introduction. Interfering with protein expression is a powerful strategy to investigate the function of a protein. Traditionally, DNA-modifying methods have been used to knockout proteins on the gene level (Capecchi, ), an approach that has had a recent resurgence with the emergence of CRISPR/Cas9 technology (Doudna and Charpentier, ).RNA-targeting methods such as RNAi are also widely.

In the aerobic digestion, the average endogenous decay coefficient of volatile suspended solids was L day –1 with a 95% confidence limit of whereas L day –1 was observed for anoxic digestion with a 95% confidence limit of at 25±1°C.

Results show that anoxic digestion has a slightly reduced decay rate than aerobic. New method for endogenous protein degradation.

minimizing the risk of phenotype compensation and off-target effects. Trim-Away introduces. Resource A Method for the Acute and Rapid Degradation of Endogenous Proteins Dean Clift,1,* William A.

McEwan,1 Larisa I. Labzin,1 Vera Konieczny,2 Binyam Mogessie,2 Leo C. James,1,* and Melina Schuh1,2,3,* 1Medical Research Council, Laboratory of Molecular Biology, Cambridge CB2 0QH, UK 2Max Planck Institute for Biophysical Chemistry, Go¨ttingen, Germany.

Naphthalene. Naphthalene has often been used as a model compound to investigate the ability of bacteria to degrade PAHs because it is the simplest and the most soluble PAH [].Therefore, information of bacterial degradation of naphthalene has been used to understand and predict pathways in the degradation of three- or more ring PAHs.

Here we asses the added contribution that can be made to dendroclimatology using stable isotope measurements. We describe what is involved in measuring tree-ring stable isotopes, provide a brief review of progress to date, and point to the ways in which stable isotope dendroclimatology can be used to provide something new.

Abstract. In rat yolk sacs incubated in vitro, the rates of degradation of endogenous [3H]leucine-labelled proteins and of pinocytically ingested I-labelled bovine serum albumin were both decreased in the presence of either ammonium, methylammonium or ethylammonium ions ( mM) or much lower concentrations of chloroquine ( microM).The properties of the aluminum alloys, titanium alloys, nickel-based superalloys, polymer-matrix composites, and ceramic-matrix composites that are candidate materials for HSCT (High-Speed Civil Transport) structures and engines may degrade with time at the elevated temperatures associated with the operation of the aircraft.