... catalytic effect on hydrogen peroxide decomposition among three iron oxides (FeOOH, Fe3O4 and Fe2O3) - 35 - The hydrogen peroxide decomposition by FeOOH followed a first order reaction with the H2O2 ... Use of Iron Minerals in Optimizing the Peroxide Treatment of Contaminated Soils Water Environ Res., 65(7), 839-844 Weiss J J and Haber F (1934) The catalytic decomposi...
Ngày tải lên: 05/09/2013, 08:40
... performed with HPLC-ED to determine if, and to what extent, H2O2 was generated during the autoxidations and tyrosinase-mediated oxidations of tyrosine, DOPA, and dopamine This sensitive and specific ... Representative chromatograms of the autoxidation and tyrosinase-mediated oxidations of DOPA, with and without catalase Peak profiles represent levels of DOPA...
Ngày tải lên: 07/03/2014, 17:20
Báo cáo khoa học: Glucose oxidase prevents programmed cell death of the silkworm anterior silk gland through hydrogen peroxide production ppt
... of sucrose by the cocoon of the silkworm, Bombyx mori Insect Biochem 5, 653–657 Glucose oxidase prevents programmed cell death 21 Tucker AS (2010) Salivary gland adaptations: modification of the ... action of an insect steroid hormone in steroid-induced programmed cell death Mol Cell Endocrinol 263, 18–28 Kakei M, Iwami M & Sakurai S (2005) Death commitme...
Ngày tải lên: 15/03/2014, 00:20
Effect of hydrogen peroxide on the destruction of organic contaminants synergism and inhibition in a con
... irradiation Afterwards, the reactor reached steady state and the concentration of 4-CBA remained constant At steady state, the effluent concentration of 4-CBA was approximately 64% of the initial ... beneficial This is because the concentration of organic contaminants decreases but that of hydrogen peroxide remains the same, resulting in continually increasing...
Ngày tải lên: 16/03/2014, 00:07
Báo cáo khoa học: Mammalian 105 kDa heat shock family proteins suppress hydrogen peroxide-induced apoptosis through a p38 MAPK-dependent mitochondrial pathway in HeLa cells potx
... JNK pathway Results Hsp10 5a and Hsp105b suppress apoptosis induced by H2O2 but not by heat shock in HeLa cells Previously, we have established human HeLa cell lines (HeLa- tet ⁄ Hsp10 5a and HeLa- tet ... necessary to clarify the targets of p38 MAPK signaling in HeLa cells treated with H2O2 Apoptosis signal-regulating kinases (ASKs) are serine ⁄ threonine kinas...
Ngày tải lên: 16/03/2014, 06:20
Báo cáo khoa học: An inserted loop region of stromal ascorbate peroxidase is involved in its hydrogen peroxide-mediated inactivation pot
... have proved the hypothesis that a region in the C-terminal half of stromal APX 2708 is involved in its susceptibility to hydrogen peroxide and indicated that this region is in a loop unique to chloroplastic ... extract of Escherichia coli containing recombinant stromal APX of spinach [13] and thylakoid-bound APX purified from spinach [5] These results indicated...
Ngày tải lên: 16/03/2014, 14:20
Báo cáo khóa học: Mechanistic insight into the peroxidase catalyzed nitration of tyrosine derivatives by nitrite and hydrogen peroxide doc
... derivative in which the protein has been modied by nitration of some endogenous tyrosine residue(s) The formation rate of the band at 422 nm is the same as the rate of disappearance of the band at 425 ... phenol nitration by nitrite Plot of the rate of HRP -catalyzed nitration of phenol as a function of nitrite concentration in 200 mM phosphate b...
Ngày tải lên: 16/03/2014, 16:20
Báo cáo khoa học: Microperoxidase 8 catalysed nitrogen oxides formation from oxidation of N-hydroxyguanidines by hydrogen peroxide ppt
... 2003 Microperoxidase and nitrogen oxides formation (Eur J Biochem 270) 51 Table Eects of incubation conditions on the oxidation of N-(4-chlorophenyl)-NÂ-hydroxyguanidine by H2O2 catalysed by MP8 ... proceed by mono-electronic transfers and with peroxidase-type reactions catalysed by MP8 It probably involves initial oxidation of MP8FeIII by H2O2 to MP8 compound...
Ngày tải lên: 17/03/2014, 09:20
Báo cáo khoa học: Hydrogen peroxide efflux from muscle mitochondria underestimates matrix superoxide production – a correction using glutathione depletion pptx
... αKGDH Rot O2 – Rot O2 IF αKG Malate Qo AA Stig Fum Succinate O 2– O 2– NAD+ NADH MDH III e– Q IQ – O 2– OAA GOT NAD+ Matrix Glutamate ASP O 2– Site and topology of superoxide production Fig ... 3, and 7), rather than having a specific effect at any one site We interpret these findings as indicating that the standard assay of matrix superoxide production, as meas...
Ngày tải lên: 22/03/2014, 21:21
Re-Evaluation of Some Organic Chemicals, Hydrazine and Hydrogen Peroxide potx
... incidence of hepatocellular adenomas and carcinomas in mice, tumours of the nasal cavity, liver subcutaneous tissues, mammary gland and peritoneal mesotheliomas in rats and tumours of the liver and ... levels in the air and water, in human and plant tissues and bacteria, and in food and beverages 5.2 Human carcinogenicity data No adequate data on the carcinogenicity o...
Ngày tải lên: 28/03/2014, 19:20
Báo cáo khoa học: Enhanced sensitivity to hydrogen peroxide-induced apoptosis in Evi1 transformed Rat1 fibroblasts due to repression of carbonic anhydrase III docx
... downregulation of caIII gene expression mediated by Evi1 Results Evi1- expressing Rat1 fibroblasts are resistant to taxol-induced apoptosis Independent, stable populations of Rat1 cells expressing murine Evi1 ... expression increases sensitivity to H2O2-mediated apoptosis in complete contrast to the protective effect of other apoptosisinducing agents Increased...
Ngày tải lên: 29/03/2014, 08:20
Báo cáo hóa học: " Involvement of intracellular free Ca2+ in enhanced release of herpes simplex virus by hydrogen peroxide" ppt
... rises in [Ca2+] i were suppressed by the buffering agents BAPTA and quin-2 [22] It is likely that H2O2 increases [Ca2+] i through the release of Ca2+ from intracellular stores and Ca2+ influx in HSV-1-infected ... influx in HSV-1-infected cells Since the buffering of [Ca2+] i by Ca2+ chelators diminished the effect of H2O2 on the release of HSV-1, we concluded th...
Ngày tải lên: 20/06/2014, 01:20
Báo cáo nghiên cứu khoa học: " EXPERIMENTAL AND THEORETICAL ANALYSIS OF A CRITICAL CHEMICAL REACTION: DECOMPOSITION OF HYDROGEN PEROXIDE (H2O2)" potx
... peroxide and catalyst concentration and of the initial temperature of the reactor on the reaction rate and the heat flow behavior were evaluated The hydrogen peroxide solution used was a 30% mass ... reaction rate with mass and energy balances The heat data obtained from the reaction calorimetry were fitted to a mathematical model based on mass and energy balances for...
Ngày tải lên: 22/07/2014, 03:20
KHẢO SÁT SIÊU ÂM LÒNG HẬU MÔN VỚI HYDROGEN PEROXIDE TRONG BỆNH RÒ HẬU MÔN VÀ RÒ HẬU MÔN - ÂM ĐẠO doc
... trường hợp rò hậu môn - âm đạo chẩn đoán siêu âm lòng hậu môn ngã âm đạo sau bơm HP Hình 5: rò trực tràng Hình 6: rò hậu môn – âm đạo Đối chiếu với kết phẫu thuật: Về diện vị trí lỗ trong, có ... phản âm mạnh lớp niêm mạc Trong trường hợp nghi ngờ rò hậu môn – âm đạo, thực khảo sát loại đầu dò ngả âm đạo lòng hậu môn với...
Ngày tải lên: 01/08/2014, 16:20