degradation of organic compounds in aerobic and anaerobic environments

... procedures for determination of organic compounds in finished drinking water, source water, or drinking water in any treatment stage The method is applicable to a wide range of organic compounds that ... sample containing low concentrations of compounds is analyzed immediately after a sample containing relatively high concentrations of compounds Syringes and splitless injection port liners must ... ion of the analyte Ais = integrated abundance of the quantitation ion internal standard Qx = quantity of analyte injected in ng or concentration units Qis = quantity of internal standard injected...

Ngày tải lên: 22/03/2014, 14:20

... oxidation of sulfur-containing compounds using CdS and found that the presence of sulfur-containing organics reduced the photo-corrosion of CdS Yan et al (2010) fabricated a novel composite consisting ... DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING NATIONAL UNIVERSITY OF SINGAPORE 2012 Acknowledgement First of all, I would like to thank my supervisor Prof Bai ... important role as an ultrathin coating in suppressing the photocorrosion of CdS and the CdS/TiO2 composites exhibited enhanced photoactivity in the oxidation of Rhodamine B in water under visible...

Ngày tải lên: 10/09/2015, 15:50

... statins act as anti-inflammatory agents, although their ability to block adhesion molecules and preventing the prenylation of proteins involved in inflammatory signaling (e.g GTP-binding proteins) ... would examine the same endpoints in the models as in the clinic Typically, early proof -of- concept studies for COPD anti-inflammatory strategies in man assess inflammatory cell numbers in biofluids ... Preclinical in vivo models of cigarette smoke-induced lung inflammation are commonly used to investigate prospective disease mechanisms and evaluate the efficacy of candidate compounds Exposure of...

Ngày tải lên: 12/08/2014, 11:22

... with inorganic and organic mater at an increasing rate Moreover, to fulfill the growing demand of food supply for increasing population of the world, a lot of pesticides, herbicides are used in ... Each of these industries requires large quantity of water for processing and water discharged from these industries is contaminated with toxic organic pollutants In addition, the increasing population ... in use in environmental engineering Chapter Introduction can generate cancer-causing agent The incineration of organic waste was widely used, but it is not an ideal water treatment process since...

Ngày tải lên: 14/09/2015, 12:35

... TESTING TO DETERMINE REACTIVE ORGANIC COMPOUNDS IN AEROSOL COATING PRODUCTS This section specifies the procedure for determining the percent by weight of the reactive organic compounds contained ... defined in section 94508(a), and (3) the reactive organic compounds (ROC) contained in aerosol coating products, as that term is defined in Title 17, CCR, section 94521 1.2 Method 310 determines ... portion, excluding container and packaging = weight (gm) of exempt compounds in propellant For aerosol products containing LVP-VOC, the percent VOC shall be calculated using the following equation:...

Ngày tải lên: 14/03/2014, 20:20

... summarizing field and laboratory studies on anaerobic biodegradation of organic compounds The report entitled Anaerobic Biodegradation of Organic Chemicals in Groundwater: A Summary of Field and ... studies and incorporate the results in modeling Therefore, EPA convened a workshop in Atlanta, Georgia, on anaerobic biodegradation of organic chemicals in 1997 Representatives from academia, industry ... distributions of first order biodegradation rates EPA uses anaerobic biodegradation rates in the subsurface fate and transport model The Agency considers that although anaerobic biodegradation...

Ngày tải lên: 28/03/2014, 19:20

... determine the rate of biodegradation of specific contaminants in groundwater during a field study Mass flux of the studied contaminant through a line/cluster of wells (a transect) is recorded instead ... environments As reported earlier, many aquifers become anaerobic during contaminant biodegradation due to the use of oxygen in aerobic respiration Replacement of this oxygen from upgradient of ... approximate and that often many of the required parameters necessary for the modeling are not available 3 RESULTS Biodegradation of organic compounds under aerobic conditions most often occurs...

Ngày tải lên: 28/03/2014, 19:20

... preference, indicating the existence of alternating aerobic and anaerobic lifecycles A comparative biodegradation of terpanes, hopanes and steranes under aerobic and anaerobic conditions, Table 3, indicate ... source rocks and from the same basin but displaying different levels of biodegradation were selected for laboratory biodegradation experiments using aerobic, anaerobic and mixed (aerobic/ anaerobic) ... stepwise biodegradation in such a way as to survive in the predominant environment (aerobic and anaerobic) The goal of the present study was to investigate the potential of aerobic bacteria, anaerobic...

Ngày tải lên: 20/06/2014, 21:20

... analysis of the sample Each cleanup step is intended to eliminate interfering compounds by using physical or chemical properties that differ between interfering compounds and the analyte of interest ... used in the model, the more representative the model output can be of land application at field scales The intent of introducing this approach is to encourage all involved in sustainable land ... P.H Krogh, K.K Brandt, J Sorensen, T Madsen, J Petersen, and C Gron 2003 Recycling of sewage sludge and household compost to arable land: Fate and effects of organic contaminants, and impact on...

Ngày tải lên: 14/02/2014, 03:20

... increases in the future demand of all organic products This augurs well for the growth of the organic industry in the Eastern Cape and in South Africa in general The findings of this study are consistent ... group of people as part of its ways, aids in the cohesion of this group, helps that particular group maintain its identity in the face of others, and therefore creates a feeling of "belonging" ... growing importance of organic products in the food system of the Eastern Cape Province which warrants a systematic investigation into consumer preferences and buying behaviour Factors influencing...

Ngày tải lên: 14/02/2014, 03:20

... solvent and an extractant, and as an intermediate product in organic synthesis Also, chloroform and other THMs are by-products of the chlorination of drinking waters and wastewaters, and the disinfection ... availability of water that is clean and safe for drinking and recreation and that is suitable for industry, irrigation, and habitat for fish and wildlife Escalating population growth and increasing demands ... supply of drinking water In contrast to the monitoring of VOC contamination of ground water at point-source release sites, such as landfills and leaking underground storage tanks (LUSTs), our investigations...

Ngày tải lên: 14/03/2014, 19:20

... and is greater than the pKa of pyridine (5.2) In this case, the NH2 induces charges ortho and para to the in- ring N These charges interact indirectly with the dipole of the nitrogen in the ring ... versus the final state with the electrical field The susceptibility gauges only the reaction Cinitial - Cfinal and is completely independent of both R and S This factoring and quantifying of each ... as shown in Table SPARC has been in use in Agency programs for several years, providing chemical and physical properties to Program Offices (e.g., Office of Water, Office of Solid Waste and Emergency...

Ngày tải lên: 22/03/2014, 14:20

... di and si are the values of wind direction and wind speed of sample i The ranges of wind direction and wind speed are divided into a series of subranges having similar numbers of samples in each ... because it is generated by a random series (d) Select an interval of noise in mfc Although it is difficult to determine the exact starting and ending points of the noise interval, the selected noise ... is released into a larger volume of air as wind speed increases; the concentration therefore decreases (16) However, the factors of sources and increase with increasing wind speed and source shows...

Ngày tải lên: 22/03/2014, 14:20

... two minute time intervals at both the T0 and T1 sites A full description of the instrument and its performance is given in Junkermann and Burger (2006), and an instrumental intercomparison in Hak ... ascent and these are identified as a single point in Fig Point (∼17:00) is an interception of the plume at a lower altitude upon return into the MCMA The higher mixing ratios of MTBE at the beginning ... the morning hours as the starting point of the plume evolution Following morning emissions from traffic, industry and cooking, etc., into a shallow boundary layer, the boundary layer rises and the...

Ngày tải lên: 28/03/2014, 20:20

... brain and aorta The level of HSP90 and the type of NOS isoform present in rat brain and aorta were determined by immunoblotting (Fig 1) In brain, nNOS was the most preferentially expressed isoform, ... al In vivo degradation of NOS and HSP90 by calpain B A C D Fig In vivo digestion of NOS and HSP90 in NMS rats during HSD treatment Aliquots (20 lg protein) of rat brain soluble material (A) and ... previously to induce an increase in the level of [Ca2+]i and a correlated calpain activation [28] This increase in [Ca2+]i is more intense in aorta than in brain Under these conditions, in brain, no...

Ngày tải lên: 30/03/2014, 04:20

... Huckel in 1931 and by Pauling in 1933 The first quantitative measure of conjugation, hyperconjugation, and strain in organic molecules arose from Kistiakowsky's determination of the differences in ... those in Fig 1.5 Fitting a pair of verticals to the extrapolated linear drifts before and after reaction for a series of 18 alternating injections of standard and sample leads to a series of ratios ... the heating and cooling devices and the number of pulses delivered to the heater changed in response to the control circuit At the beginning of the titration, a sharp change in the number of pulses...

Ngày tải lên: 01/04/2014, 10:53

... anthraquinone Toluidene Methyl-aniline Diphenylamine 60-62 Methyl-diphenylamine Naphthylamine Preparation of rosaniline, crysaniline, safranine, and p-lenkAcetanilide aniline PreparaAmido-hydroquinone ... Cinchonine BruQuinine Strychnine Theme) Cotarnine cine 78-80 Camphor and Glucosides Terpentine hydrochloride 80 Salicine 81 10 II Electrolysis of Blood Electrolysis of Albumen Electrolysis and Electrosynthesis ... suggests the possibility of solving synthetical and analytical problems which have as yet remained unanswered In this respect its province is both that of inorganic and organic chemistry Experiments...

Ngày tải lên: 02/04/2014, 16:00

... porcine μ-calpain, [4-((4-(dimethylamino)phenyl)azo)benzoic acid, succinimidyl ester]-threonine-proline-leucine-lysine~serine-proline-proline-proline-serineproline-arginine-[5-((2-aminoethyl)amino)naphthalene1-sulfonic ... ester]-threonineproline-leucine-lysine~serine-proline-proline-proline-serine-proline-arginine-[5-((2-aminoethyl)amino)naphthalene-1-sulfonic acid] The reaction mixture contained 40 μg protein and 15 mM calcium in 50 μl of buffer (10 mM http://www.journal-inflammation.com/content/6/1/20 ... and zVF tested Like zVF, PD 150606 increased the induction of COX-2 in KD and Control MAEC (figure 4B), further suggesting that calpain is responsible for restraining the induction of COX-2 in...

Ngày tải lên: 11/08/2014, 08:22

... to an increase of a selenomethionine (29% of SeMet in the case of selenate and 41% of SeMet in the case of selenite) The increasing toxicity was also accompanied by an increase in thioredoxin reductase ... selenomethionine (SeMet) into proteins in place of Cys and Met The differences in size and ionization properties of S and Se may result in significant alterations in structure and consequently function of ... selenomethionine This can be incorporated nonspecifically into proteins instead of methionine This misincorporation may result in significant alterations in protein structure and consequently protein function...

Ngày tải lên: 12/08/2014, 03:20

... conception and design, analysis and interpretation of data, involved in drafting the articles MG: substantial contribution to conception and design, statistical analysis and interpretation of data, involved ... within 3.1–13.7% for all of the intra- and inter-day determinations on standards The gaseous standards were directly prepared in the Bio-VOC® bulb filled with helium, µL of VOC methanolic standard ... method for identifying and quantifying selected VOCs in exhaled air, and apply it to a cross-sectional study of NSCLC and COPD patients, and healthy control smokers and non-smokers, and a short-term...

Ngày tải lên: 12/08/2014, 18:21