ưv photo grafting polyimerization of acrylic acid
Báo cáo hóa học: " Assessment of Microwave/UV/O3 in the Photo-Catalytic Degradation of Bromothymol Blue in Aqueous Nano TiO2 Particles Dispersion" pptx
... 1628 higher than those of air pollutants Thus, their treatment by photo- catalysis is difficult compared to that of air pollutants Second, polluted water often contains mixture of hydrophilic and hydrophobic ... degraded by photo- catalysis only Fifth, the amount of oxygen available for photo- catalytic oxidation is very low in water compared to in air Due to these reasons, photocatalytic oxidation of water ... that it increases the photocatalytic degradation rate of organic pollutants [11] The enhancement of the degradation rate with addition of H2O2 can be rationalized in terms of several reasons First,...
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báo cáo hóa học:" Stabilization of mid-sized silicon nanoparticles by functionalization with acrylic acid" pptx
... particles were conveyed into 20 ml of acrylic acid, heated to 80°C, and left to react for 25 Due to the formation of a silicon-carbon bond, the alkene group of the acrylic acid changes from a double ... induced grafting of acrylic acid to the nanoparticle surface In order to confirm their covalent attachment on the silicon nanoparticles and to assess the quality of the functionalization, X-ray photoelectron ... DRIFT spectra of as-prepared nanoparticles (top), and acrylic acid- functionalized nanoparticles (bottom) with the appointed functional groups Figure XPS C 1s spectra of acrylic acid- functionalized...
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ESTERS OF CARBOXYLIC ACIDS – CONVENTIONAL METHODS
... introduction of ester functions of dicarboxylic acids or mixed derivatives containing aliphatic ester moieties and ester functions of dicarboxylic acids, 4.1 Acylation with Carboxylic Acid Chlorides ... important polysaccharide ester of a carboxylic acid, and is prepared industrially or at the laboratory scale by conversion of cellulose with a mixture of acetic acid and acetic anhydride (10–40% ... the presence of sulphuric acid as catalyst (up to 15%, w/w) It is assumed that intermediately the mixed sulphuric acid acetic acid anhydride is formed (usually called acetyl sulphuric acid) generating...
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Microbial Production of Amino Acids in Japan
... various amounts of sodium pyruvate, g of ammonium acetate, 0.6 g of pyrocatechol, 0.2 g of sodium sulfite, 0.1 g of EDTA, and cells harvested from 100 ml of broth, in a total volume of 100 ml.The ... production of glutamate even in the presence of excess amounts of biotin and suggested that the overproduction of glutamate is caused by the imbalance of the coupling between fatty acid and glutamate ... soybea1ns contain lower amounts of lysine, which is one of Microbial Production of Amino Acids in Japan 77 the essential amino acids for those livestocks The estimated amount of l-lysine produced in...
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Tài liệu Báo cáo khoa học: Multi-targeted activity of maslinic acid as an antimalarial natural compound pdf
... proteolytic hydrolysis of haemoglobin as a source of amino acids constitutes one of the essential processes which take place along the intra-erythrocytic stage of the parasite Degradation of haemoglobin ... structure of the available inhibitors of cathepsin D [19], a lysosomal protease of mammalian cells, and chalcones and phenothiazines have been assayed as inhibitors of falcipain-2 [20,21] Inhibition of ... inhibition of falcipain [38] or by the indirect effect on the functionality of the vacuole as a result of the accumulation of partially hydrolysed peptides, leading to the accumulation of uncleaved...
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Tài liệu THE ROLES OF AMINO ACID CHELATES IN ANIMAL NUTRITION pdf
... Association of Feed Control Officials, a metal amino acid chelate is lithe product resulting from the reaction of a metal ion from a soluble salt with amino acids with a mole ratio of one mole of metal ... 47 76 xx Contents EVALUATION OF THE NUTRITIONAL EFFICIENCY OF AMINO ACID CHELATES 86 Silvano Maletto and Germano Cagliero AN ASSESSMENT OF LONG TERM FEEDING OF AMINO ACID CHELATES 106 Robert B ... of a specific mineral in the feed; (b) The Roles of Amino Acid Chelates in Animal Nutrition an imbalance of another mineral or nutrient including certain vitamins, amino acids and fats, any of...
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Tài liệu Báo cáo khóa học: Tungsten-containing aldehyde oxidoreductase of Eubacterium acidaminophilum ppt
... acetaldehyde One unit of aldehyde oxidoreductase activity was defined as the amount of enzyme catalyzing the reduction of lmol of benzyl viologen per minute For a fast check for the presence of aldehyde ... colorimetric technique as described [28] Analysis of pterin cofactor The pterin cofactor content was determined as described previously [29] After oxidation of the cofactor with potassium permanganate, protein ... sizes of the products were analyzed using GENESCAN software (Perkin Elmer Applied Biosystems) Results Isolation of aldehyde oxidoreductase The specific activity of aldehyde oxidoreductase from E acidaminophilum...
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Tài liệu Báo cáo Y học: Electrochemical, FT-IR and UV/VIS spectroscopic properties of the caa3 oxidase from T. thermophilus docx
... changed cooperativity of the other redox centers In order to discriminate the contributions of the cofactors, inhibitors uncoupling or changing the cooperativity can be used Addition of cyanide strongly ... discrimination of these overlapped bands, we used deuteration of the sample and FT-IR spectra studies in the presence of the inhibitor cyanide support our tentative assignments Tentative assignments of difference ... a and a3 In addition to the signals of the hemes, the reorganization of the polypeptide backbone and amino acid side chains occurring upon electron transfer of the five redox active centers heme...
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Báo cáo khoa học: A Caenorhabditis elegans model of orotic aciduria reveals enlarged lysosome-related organelles in embryos lacking umps-1 function potx
... enlargement The loss of UMPS activity, in a number of different species, results in the accumulation of orotic acid [30,47] We investigated whether the accumulation of orotic acid in umps-1()) mutants ... levels of orotic acid in umps-1()) embryos Discussion Role of the V-ATPase and PPK-3 in the control of gut granule size We have shown that, with the exception of ppk-3()), disrupting the function of ... amounts of orotic acid were sufficient for gut granule enlargement by feeding animals high levels of orotic acid These treatments did not promote the formation of intestinal vacuoles at any stage of...
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Báo cáo khoa học: Spatio-temporal distribution of fatty acid-binding protein 6 (fabp6) gene transcripts in the developing and adult zebrafish (Danio rerio) pptx
... uptake of fatty acids across the plasma membrane and transport to various subcellular organelles, (b) modulation of the activity of enzymes involved in fatty acid metabolism, (c) protection of enzymes ... for a polypeptide of 131 amino acids, with a molecular mass of 14 406 Da and an isoelectric point of 6.59 With the exception of some Fabp10s, which have an isoelectric point of 8.8–9.0, all other ... membranes from the detergent effects of excess fatty acids by sequestering them, and (d) modulation of cell growth and differentiation by transport of fatty acids to the nucleus where they activate...
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Báo cáo khóa học: O-acetylation and de-O-acetylation of sialic acids in human colorectal carcinoma docx
... various stages of colorectal carcinoma Sialic acids were isolated and analysed by fluorometric-HPLC The proportion of individual sialic acids is expressed as a percentage of the total sialic acid in ... development, a systematic survey of OAE and OAT activities along with the relative level of O-acetylated sialic acids, was undertaken Here we show that the total level of sialic acid O-acetylation is significantly ... Sialic acid in colorectal carcinoma % Sialic acids in resection margins Table Fluorometric-HPLC and GC-MS analysis of glycoconjugate-bound and free sialic acids isolated from the mucosa of matched...
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Báo cáo khoa học: Local stability identification and the role of key acidic amino acid residues in staphylococcal nuclease unfolding ppt
... Local stability and key acidic amino acids in staphylococcal nuclease by the interactions of E75 with H121 and K97 It is believed that a small number of key amino acid segments play major roles ... structure In order to discern whether it is due to the absence of an acidic residue (glutamic acid or aspartic acid) , or the presence of glycine which destabilizes SNase secondary structure, both ... the presence of an a-helix [13,14] In contrast, the E129G mutant exhibited less CD than the others Thus, while most of the mutations of negatively charged glutamic acid or aspartic acid residues...
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Báo cáo Y học: Molecular cloning and characterization of isomultiflorenol synthase, a new triterpene synthase from Luffa cylindrica, involved in biosynthesis of bryonolic acid ppt
... Luffa cells (A) Time course of accumulation of bryonolic acid and total sterol in cultured Luffa cells Mean of three replicates Bar indicates SD (B) Time course of levels of isomultiflorenol synthase ... with those of authentic isomultiflorenol As the control pYES2 transformant produced no triterpene mono-alcohol [3], accumulation of Fig Multiple alignment of deduced amino -acid sequences of isomultiflorenol ... product of LcIMS1 isomultiflorenol synthase, could not be identified Cloning of isomultiflorenol synthase (Eur J Biochem 268) 6315 Fig Time course of bryonolic acid accumulation and levels of isomultiflorenol...
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Properties of carboxylic acids
... Mechanism of Acid- Catalyzed Ester Hydrolysis Is the reverse of the mechanism for acidcatalyzed esterification Like the mechanism of esterification, it involves two stages: 1) formation of tetrahedral ... stage is analogous to the acidcatalyzed addition of water to a ketone Second stage: cleavage of tetrahedral intermediate O + R'OH RCOH H+ OH RC OH OR' Mechanism of formation of tetrahedral intermediate ... Key Features of Mechanism Activation of carbonyl group by protonation of carbonyl oxygen Nucleophilic addition of water to carbonyl group forms tetrahedral intermediate Elimination of alcohol from...
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Cadmium mobilisation and plant availability the impact of organic acids
... amino acids as compared to carboxylic 111 Figure % of formation of organically bound form of Cd with citric, malic and aspartic acids acids Carboxylic acids, particularly citric and malic acids, ... flasks and radiolabelled with Cd-115m tracer Organic acids; Carboxylic acids: Citric acid and Oxalic acid: Amino acids: Aspartic acid and Glutamic acid were added separately in the ratio (1:20 w/w).Ionic ... 9±0.5 6.2±0.3 Cd Conc without Org acid (control exp.) Values±SD of increasing concentrations of various organic acids The distribution of Cd in various parts of maize plant shows the following...
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Báo cáo khoa học: Plant oxylipins: role of jasmonic acid during programmed cell death, defence and leaf senescence doc
... synthesis [34] By contrast, fractions of the unsaturated membrane fatty acid a-linolenic acid and a-linoleic acid are converted randomly and nonenzymatically to a variety of products when etiolated plants ... Modification of ribosomal RNA by ribosome-inactivating proteins from plants Nucleic Acids Res 16, 1349–1357 73 Endo Y & Tsurugi K (1987) RNA N-glycosidase activity of ricin A chain: mechanism of action of ... block in 5-aminolevulinic acid synthesis released [22] Feedback control of 5-aminolevulinic acid synthesis has been attributed to heme and Pchlide [23,24] A mutant of Arabidopsis thaliana, termed...
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Tìm thêm: xác định các mục tiêu của chương trình xác định các nguyên tắc biên soạn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản khảo sát chương trình đào tạo gắn với các giáo trình cụ thể tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến hiệu suất h fi p2 đặc tuyến tốc độ rôto n fi p2 động cơ điện không đồng bộ một pha sự cần thiết phải đầu tư xây dựng nhà máy thông tin liên lạc và các dịch vụ từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng 9 tr 25