metabolism of polycyclic aromatic hydrocarbons
Effect of Surfactant on Degradation of Polycyclic Aromatic Hydrocarbons (pahs) in Thermophilic Anaerobic Co-Digestion of Sludge from Kim-Ngưu River and Organic Waste
... Biodegradation aspects of Polycyclic Aromatic Hydrocarbons (PAHs): A review, Journal of Hazardous Materials 169 (2009) 1-15 Bach Quang Dung, Enhancement of intrinsic bioremendiation of PAHs-contaminated ... analysis of polycyclic aromatic hydrocarbons in sewage sludge from wastewater treatment plants, Journal of Chromatography A 938 (2001) 57-65 S.R Wild, S.P McGrath, K.C Jones, The polynuclear aromatic ... yields in the case of (SL + OW) relation to the number of aromatic rings 3.2 Sludge+Organic waste+Tween 80 treatment In case of (SL + OW + Tween 80) is similar to the case of (SL + OW), degraded...
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determination of polycyclic aromatic hydrocarbon pahs and aliphatic hydrocarbons in oysters by gc msms
... characterize the source of hydrocarbon contamination 10.2 PAHs The occurrence of one or more of any of the 16 PAHs of food safety concern is indicated by the presence of transition ions (quantifier ... matched against that of crude oil sample from the Gulf of Mexico The composition of crude oil from the Gulf of Mexico is given in Table indicating relatively high levels of n-hexadecane, n-heptadecane ... Aliphatic hydrocarbons – The method was shown to be unsuitable for recovery of aliphatic hydrocarbons below n-pentadecane due to losses during concentration of the sample extract Average recoveries of...
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The influence of surfactants on the solubilization, extraction and biodegradation of model polycyclic aromatic hydrocarbons
... EFFECTS OF SURFACTANT ON BIODEGRADATION OF MODEL POLYCYCLIC AROMATIC HYDROCARBONS LI JINGLIANG (M Eng TIANJIN UNIV) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CHEMICAL ... of wt% Tergitol 15-S-5 101 5.4 Cloud point of Tergitol 15-S-7 as a function of surfactant concentration 102 5.5 Effect of Inorganic Salts on Cloud Point of wt%Tergitol 15-S-7 104 5.6 Effect of ... of interest There are many factors that can affect the partition of solutes Several authors have studied the effect of various experimental factors on the partition mainly of polar aromatic hydrocarbons...
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Tài liệu Ambient air pollution by Polycyclic Aromatic Hydrocarbons (PAH). Position Paper pptx
... KH-41-01-373-EN-N Ambient air pollution by Polycyclic Aromatic Hydrocarbons (PAH) Position Paper ISBN 92-894-2057-X OFFICE FOR OFFICIAL PUBLICATIONS OF THE EUROPEAN COMMUNITIES L-2985 Luxembourg ... acknowledged Ambient Air Pollution by Polycyclic Aromatic Hydrocarbons (PAH) Position Paper July 27th 2001 Prepared by the Working Group On Polycyclic Aromatic Hydrocarbons PAH Position Paper July ... are often based on a limited number of samples The factors often exhibit a wide range of values - consequently their use can lead to widely differing estimates of emissions from the same type of...
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Ambient Air Pollution by Polycyclic Aromatic Hydrocarbons (PAH): Position Paper Annexes pptx
... 1994 Polycyclic Aromatic Hydrocarbons in U.K Urban Air Environ Sci Technol 28: 2380-2386 MENICHINI E., MONFREDINI F & MERLI F 1999 The temporal variability of the profile of carcinogenic polycyclic ... 4-nitroacenapthylene 1-nitrofluorene 2-nitrofluorene 3-nitrofluorene 4-nitrofluorene two nitroisomers 1-nitroanthracene 2-nitroanthracene 2-nitrofluoranthene 7-nitrofluoranthene 8-nitrofluoranthene 2-nitropyrene ... SOURCES OF DATA INCLUDE FOR TABLE INCLUDE: RESPONSES TO QUESTIONNAIRES SENT OUT BY THE WORKING GROUP and BAEK et al., 1992 Concentrations of particulate and gaseous polycyclic aromatic hydrocarbons...
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Tropospheric Air Pollution: Ozone, Airborne Toxics, Polycyclic Aromatic Hydrocarbons, and Particles potx
... Academy of Sciences, Polycyclic Aromatic Hydrocarbons: Evaluation of Sources and Effects (National Academy Press, Washington, DC, 1983) 102 G Grimmer, Ed., Environmental Carcinogens: Polycyclic Aromatic ... 99 National Academy of Sciences, Particulate Polycyclic Organic Matter (National Academy Press, Washington, DC, 1972) 100 A Bjørseth, Ed., Handbook of Polycyclic Aromatic Hydrocarbons (Dekker, ... is formed by the oxidation of NO (the major nitrogenous byproduct of combustion) after dilution in air This conversion of NO to NO2 occurs as part of the oxidation of organic compounds, initiated...
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báo cáo khoa học: " Transcriptional responses to polycyclic aromatic hydrocarbon-induced stress in Arabidopsis thaliana reveal the involvement of hormone and defense signaling pathways" pdf
... Figure a: Overview of metabolism; Figure b: Overview of photosynthesis; Figure c: Overview of carotenoid biosynthesis; Figure d: Overview of protein targeting; Figure e: Overview of cellular responses; ... well as the suggested follow-on research, will be of great value in breeding and engineering plants for phytoremediation of polycyclic aromatic hydrocarbons Conclusions The microarray experiments ... in higher plants exposed to polycyclic aromatic hydrocarbons and their N-heterocyclic derivatives Environ Toxicol Chem 2006, 25:3238-3245 Burritt DJ: The polycyclic aromatic hydrocarbon phenanthrene...
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Tài liệu Báo cáo khoa học: Pathways and products for the metabolism of vitamin D3 by cytochrome P450scc docx
... of the bond between C20 and C22 [1,14] Another difference between the metabolism of vitamin D3 and cholesterol by P450scc is that the dissociation of intermediates occurs for the metabolism of ... HMBC NMR spectra of 17a,20,23-trihydroxyvitamin D3 are presented in the supplementary Fig S2 Identification of minor products of vitamin D3 metabolism by P450scc Fig Identification of 20,23-dihydroxyvitamin ... 2008 FEBS R C Tuckey et al Metabolism of vitamin D3 by cytochrome P450scc A B C Fig Identification of 17a,20,23-trihydroxyvitamin D3 (A) Expansion of proton– carbon HSQC of 20,23-dihydroxyvitamin...
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Tài liệu Báo cáo khoa học: Multidentate pyridinones inhibit the metabolism of nontransferrin-bound iron by hepatocytes and hepatoma cells docx
... percentage of the total, over 0–2 h uptake Effect of chelators and Fe status on subcellular distribution of NTBI in hepatocytes The effect of the chelators on the intracellular distribution of Fe in ... Effect of chelators on uptake of NTBI The effects of the chelators on NTBI uptake by hepatocytes and Q7 hepatoma cells were marked and similar All chelators decreased uptake to 20% or less of the ... Fe mobilization is limited by the size of an intracellular chelatable Fe pool or permeability of the Fe–chelator complex In view of the similar efficacy of the multidentate pyridinones to DFO,...
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Báo cáo khoa học: Nanoparticles can induce changes in the intracellular metabolism of lipids without compromising cellular viability docx
... synthesis of palmitate, the precursor of FFAs The inhibition of signaling by trophic factors, removal of trophic factors or inhibition of fat synthesis result in the down-regulation of lipogenesis ... 24 h with lgÆmL)1 of cerulenin (B), lgÆmL)1 of CdTe QDs (C) and both lgÆmL)1 of CdTe QDs and lgÆmL)1 of cerulenin (D) The scale bars correspond to 50 lm (E) The quantification of the lipid droplet ... best known for its role in the maintenance of cell survival, but is also responsible for the up-regulation of glucose metabolism and the induction of lipogenesis [37–40] We hypothesized that...
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Báo cáo khoa học: Discovery and characterization of a Coenzyme A disulfide reductase from Pyrococcus horikoshii Implications for the disulfide metabolism of anaerobic hyperthermophiles doc
... nm during addition of the first equivalent of NADPH, while an increase is observed during the addition of the second and subsequent equivalents of NADPH With the exception of the expected increase ... anaerobic reduction of the S aureus enzyme there is loss of roughly 50% of the absorbance at 452 nm In that case, the loss of absorbance is attributed to an asymmetric reduction of the dimeric enzyme, ... of this table, purification was monitored by the FAD-dependent NADH oxidase activity of the enzyme, with a unit equal to the amount of enzyme required to oxidize lmol NADH in in the presence of...
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![Báo cáo khoa học: Uptake and metabolism of [3H]anandamide by rabbit platelets Lack of transporter? ppt](https://media.store123doc.com/images/document/14/rc/cg/small_cgh1394241609.jpg)
Báo cáo khoa học: Uptake and metabolism of [3H]anandamide by rabbit platelets Lack of transporter? ppt
... possibility of the involvement of other enzyme(s) (besides FAAH) in the metabolism of anandamide for the production of water-soluble metabolites These metabolites could be products of arachidonic ... rapid uptake of [3H]anandamide by Ó FEBS 2003 Uptake and metabolism of anandamide by rabbit platelets (Eur J Biochem 270) 3501 Fig Effect of caffeic acid and indomethacin on [3H]anandamide metabolism ... radioactivity was measured The sum of radioactivity in Y-1 and Y-2 is the radioactivity of extracellular space Values are the means ± SD of duplicate samples of three independent experiments Total...
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Báo cáo Y học: Functional expression of human liver cytosolic b-glucosidase in Pichia pastoris Insights into its role in the metabolism of dietary glucosides ppt
... inhibitor of reCBG [the hydrolysis of 4NP-b-Dglucopyranoside (10 mM) was reduced by 98% in the presence of 4NP-b-D-mannopyranoside (10 mM)] Hydrolysis of xenobiotic glycosides by reCBG The ability of ... to contain an ORF of 1407 nucleotides encoding a protein of 496 amino acids with a calculated molecular mass of 53.7 kDa A single putative glycosylation site was located at N47 of the deduced amino-acid ... inhibitor of reCBG (Fig 3) Incubation of reCBG (0.35 lM ®nal concentration) in the presence of and lM inhibitor reduced the b-glucosidase activity in a time-dependent manner; 36 and 70% of the b-glucosidase...
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Báo cáo khoa học: Drosophila proteins involved in metabolism of uracil-DNA possess different types of nuclear localization signals pdf
... T-ag UDE of D melanogaster TDG of D melanogaster v-Jun of Homo sapiens dUTPase of Homo sapiens H2B of Saccharomyces cerevisiae c-Myc of Homo sapiens dUTPase of D melanogaster c-Myc of Xenopus ... physiological isoforms of the enzyme were identified, with apparent molecular masses of 69 and 63 kDa for the native homotrimers (termed long isoform, LD-DUT, and the N-terminally truncated short isoform, ... the long isoform of D melanogaster dUTPase (B) The long (LD-DUTWT) and short (NTT-DUTWT) isoforms of the D melanogaster dUTPase coding sequences were fused in-frame to the N-terminus of the YFP...
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Báo cáo khoa học: Reconstruction of the central carbon metabolism of Aspergillus niger pot
... metabolic reconstruction aims at depicting a detailed description of the central carbon metabolism of A niger, namely of the metabolism of carbohydrates, organic acids, polyols and other alcohols, ... reconstruction of S cerevisiae [16] Figure depicts the process of reconstruction of A niger’s central carbon metabolism and Table presents a list of the on-line databases consulted Presence of metabolic ... the six main classes of enzymes, according to the type of transformation implicated The involvement of each class of enzymes in the carbohydrate metabolism, as well as energy metabolism proposed...
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Báo cáo khoa học: Metabolism of N-methyl-amide by cytochrome P450s Formation and characterization of highly stable carbinol-amide intermediate pdf
... cytochrome P450 [32] In order to gain insight into the P450 metabolism mechanism of N-Me-cyclo-peptides, the metabolism of a set of molecules composed of TTX (8a), iso-TTX (8b) and dihydrotentoxin (9) ... separation in the presence of acids or bases In the case of metabolism of TTX and its analogs, we have shown that under such conditions rapid cleavage of the formyl moiety of the carbinol-amide group ... mixture of M1 and M2, and was analyzed in the p.p.m region characteristic of N-methyl proton resonances of the cyclo-peptide (Fig 4) The spectrum of pure intermediate M1 cannot be obtained because of...
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Báo cáo toán học: " Metabolite proving fungal cleavage of the aromatic core part of a fluoroquinolone antibiotic" pdf
... cleavage of the aromatic fluoroquinolone core for the first time Hence, two decades after the emergence of the notion of the nonbiodegradability of fluoroquinolones, fungal degradation of all key ... to F-5 of enrofloxacin (Wetzstein et al 1997) or ciprofloxacin (Wetzstein et al 1999), for which hydroxylation of position C-5 was indistinguishable from hydroxylation of C-8 Degradation of the ... chemical degradation of enrofloxacin, ciprofloxacin or other FQs, cleavage of the aromatic core could not yet be proved either, if based on metabolite identification Work on ciprofloxacin confirmed...
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báo cáo hóa học:" Metabolite proving fungal cleavage of the aromatic core part of a fluoroquinolone antibiotic" docx
... cleavage of the aromatic fluoroquinolone core for the first time Hence, two decades after the emergence of the notion of the nonbiodegradability of fluoroquinolones, fungal degradation of all key ... to F-5 of enrofloxacin (Wetzstein et al 1997) or ciprofloxacin (Wetzstein et al 1999), for which hydroxylation of position C-5 was indistinguishable from hydroxylation of C-8 Degradation of the ... chemical degradation of enrofloxacin, ciprofloxacin or other FQs, cleavage of the aromatic core could not yet be proved either, if based on metabolite identification Work on ciprofloxacin confirmed...
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