methanol and formic acid

Báo cáo hóa học: " Facile template-free synthesis of pine needle-like Pd micro/nano-leaves and their associated electro-catalytic activities toward oxidation of formic acid" pot

Ngày tải lên : 21/06/2014, 03:20

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$Application of Hydrothermal Reaction to Biodegradability Improvement of Refractory Pollutants: Structural Conversion of Di- and Trichloroacetic Acid to Biodegradable Products$

Application of Hydrothermal Reaction to Biodegradability Improvement of Refractory Pollutants: Structural Conversion of Di- and Trichloroacetic Acid to Biodegradable Products

Ngày tải lên : 05/09/2013, 08:40

8
643
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Characterization of the Carbon Stable Isotope Ratio and Fatty Acid Structure of Zostera japonica in Coastal Areas

Ngày tải lên : 05/09/2013, 10:17

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614
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Tài liệu Báo cáo " Obtaining Essential Oil and Shikimic Acid from Star Anise Fruit (Illicium verum Hook) " ppt

Ngày tải lên : 12/02/2014, 17:20

... oil and shikimic acid from star anise fruits. With this method, obtaining yield of essential oil and shikimic acid respectively are 9.5% and 5.6% (essential oil content and shikimic acid ... as well as shikimic acid obtained by methods N 0 1, N 0 2 and N 0 3 were shown at table 1 and table 2. Table 1. Obtaining simultaneously essential oil and shikimic acid from star anise ... shikimic acid that it more simple and economic than Payne and Edmonds method. In this study, we used methanol : water (8:2) extraction to remove impurities from the crude shikimic acid, while...

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Tài liệu Báo cáo khóa học: Active-site residues and amino acid speciﬁcity of the bacterial 4¢-phosphopantothenoylcysteine synthetase CoaB pptx

Ngày tải lên : 19/02/2014, 12:20

... before as important step in the biosynthesis of the lantibiotics epidermin and mersacidin catalyzed by the LanD enzymes EpiD and MrsD, respectively [8–10]. Flavin- dependent oxidative decarboxylation ... N210K and copuriﬁcation of the 4¢-phosphopantothenoyl- CMP intermediate. His-CoaB proteins (His-CoaB and His-CoaB N210K) were puri- ﬁed from E. coli cell extracts by Ni-nitrilotri- acetic acid and ... Complementation analysis suggested that the dfp-1 and dfp-707 mutations were in the same gene [14]. The nutritional requirements of the dfp-707 and dfp-1 mutants correspond to those of panD mutants, however, dfp-mutants...

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Tài liệu Báo cáo khoa học: The SCO2299 gene from Streptomyces coelicolor A3(2) encodes a bifunctional enzyme consisting of an RNase H domain and an acid phosphatase domain pdf

Ngày tải lên : 19/02/2014, 18:20

... RNase H domain and an APase domain. The RNase H and APase activities of the full length SCO2299 protein depend on its N-terminal RNase H domain and C-terminal APase domain, respectively, and do not ... plates containing 50 lgÆ mL )1 ampicillin and 30 lgÆmL )1 chloramphenicol, and incubated at 30 °C and 42 °C. Plasmid constructions, overproductions and puriﬁcations Plasmids for overexpression ... PIPES as an internal standard, and 2 lgof protein samples in a ﬁnal volume of 100 lL. The reaction mixture was incubated for 10 min at 37 °C and transferred to 400 lL cold methanol. The contents...

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Tài liệu Báo cáo Y học: The b-1,4-endogalactanase A gene from Aspergillus niger is speciﬁcally induced on arabinose and galacturonic acid and plays an important role in the degradation of pectic hairy regions pdf

Ngày tải lên : 21/02/2014, 01:21

... amino acid sequence of GALA revealed very high similarity to the endogalactanases of A. tubingensis (95.7% amino acid sequence identity) and A. aculeatus (78.9% amino acid sequence identity) and ... min D -galactose, D -galactobiose and D -galactotetraose were used as standards to identify the D -galactose and D -galacto-oligosaccharides. The calculated areas for D -galactose and D -galacto-oligosaccharides ... endogalactanases (between 21% and 28% amino acid sequence identity). This is illustrated by a CLUSTALW analysis [29] of the deduced amino acid sequences of GALA and b-1,4-endogalactanases of Aspergillus...

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Tài liệu Báo cáo Y học: Bivalent cations and amino-acid composition contribute to the thermostability of Bacillus licheniformis xylose isomerase doc

Ngày tải lên : 22/02/2014, 07:20

... uncharged polar amino acids (i.e. Q, N, S, and T) and an increase in charged amino -acid residues (i.e. K, E, and R) in hyperthermophilic proteins. As S and T can catalyze the deamination and backbone ... The amounts of fructose and xylulose produced were determined using the cysteine/carbazole/sulfuric acid method. Absorbance was measured at 537 nm and 560 nm for xylulose and fructose, respectively. ... 0.981, is based on the elution data of the 200, 150, and 66 kDa protein standards. Linear regressions (1) and (2) give molecular masses of 200 and 177.5 kDa, respectively, for BLXI. 6294 C. Vieille...

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Báo cáo khoa học: Involvement of NF-jB subunit p65 and retinoic acid receptors, RARa and RXRa, in transcriptional regulation of the human GnRH II gene pot

Ngày tải lên : 16/03/2014, 10:20

... Differential effects of ligand-activated RARa and RXRa on the promoter activity of the hGnRH II gene in TE671 and JEG-3 cells. In vivo effect of RARa and RXRa with their ligands, ATRA and 9-cisRA, on the ... TE671 medulloblastoma and JEG-3 placenta choriocarcinoma cells. Supershift and chromatin immunoprecipitation assays showed in vitro and in vivo binding of NF-jB subunit p65 and the retinoic acid receptors, RARa and RXRa, ... PCR. Treatment of cells with the RARa ⁄ RXRa ligands, all-trans retinoic acid and 9-cis-retinoic acid, reduced and increased GnRH II gene expression in TE671 and JEG-3 cells, respectively. Taken together,...

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Báo cáo Y học: Amino acids 3–13 and amino acids in and ﬂanking the 23FxxLF27 motif modulate the interaction between the N-terminal and ligand-binding domain of the androgen receptor pdf

Ngày tải lên : 17/03/2014, 10:20

... AR.NTDwt and mutants with GST-AR.LBD (see also legend to Fig. 3). Ó FEBS 2002 Interaction between androgen receptor subdomains (Eur. J. Biochem. 269) 5787 Amino acids 3–13 and amino acids in and ﬂanking ... the Netherlands; 2 Department of Reproduction and Development, Erasmus Medical Center, Rotterdam, the Netherlands The N-terminal domain (NTD) and the ligand-binding domain (LBD) of the androgen ... amino acids 23, 26 and 27 completely abolished interaction with GalDBD-AR.LBD and alanines at posi- tions 24 and 25 increased the interaction capacity. All alanine substitutions of amino acids...

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Báo cáo khoa học: Structural characterization of N-linked oligosaccharides of laminin from rat kidney: changes during diabetes and modulation by dietary ﬁber and butyric acid pdf

Ngày tải lên : 22/03/2014, 17:20

... neutral sugars like mannose and galactose and amino sugar as N-acetylglucos- amine, along with sialic acid which accounted for  22 and 35% of total carbohydrate content in SFC and SFD groups, respectively. Puriﬁcation ... into SFC and FFC, SFD, FFD and FFD-500 groups. SFC and SFD groups received AIN-76 basal diet, whereas FFC and FFD groups received AIN-76 diet, wherein starch was replaced with 5% wheat bran and 2.5% ... co-distilled with distilled water and reduced using sodium borohydride. Excess sodium borohydride was destroyed by adding 2 m acetic acid and again repeatedly co-distilled with methanol and dried in a dessicator....

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Reductive Cleavage of N-O Bonds in Hydroxylamines and Hydroxamic Acid Derivatives Using Samarium Diiodide pot

Ngày tải lên : 22/03/2014, 18:20

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173
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Báo cáo khoa học: Characterization of surface n -alkanes and fatty acids of the epiphytic lichen Xanthoria parietina, its photobiont a green alga Trebouxia sp., and its mycobiont, from the Jerusalem hills pot

Ngày tải lên : 23/03/2014, 17:21

... and octadecanoic acid (18 : 0), and also very long-chain n-alkanes C 22 –C 34 . Dehydroabietic acid was found in both lichen and mycobiont. The occurrence of diﬀerent amounts of n-alkanes and fatty ... hexane-1,6-dioic acid, dimethyl ester; 2, tetradecanoic acid, methyl ester; 3, hexadecanoic acid, methyl ester; 4, octadecanoic acid, methyl ester; 5, dehydroabietic acid, methyl ester. Ó FEBS 2003 Alkanes and ... mycobiont) and a green alga or a cyanobacte- rium (termed the photobiont). These organisms have both algal and fungal properties [1,2] and produce n-alkane, unusual betaine ether glycerolipids [3,4], and...

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Báo cáo khoa học: Glycan profiling of urine, amniotic fluid and ascitic fluid from galactosialidosis patients reveals novel oligosaccharides with reducing end hexose and aldohexonic acid residues ppt

Ngày tải lên : 29/03/2014, 09:20

... the exception of U4 (Table 3). In U1, U6 and U7, gluconic acid (o1) has high abundance, and high levels of C 1 -oxi- dized lactose (o2) were observed in urine samples U2, U5 and U6. Discussion Using a prototype ... Neu5Ac and the adjacent hexose. No relevant ring fragments were observed between C 2 and C 3 , which is consistent with a 1–3 linkage between Hex and HexNAc. The ring fragment ions 0,2 A 4 and 2,4 A 4 , ... fragment ions 0,2 A 4 and 2,4 A 4 , and the lack of 0,3 A 4 , are indica- tive of a 1–4 linkage between HexNAc and the adjacent hexose. The ring fragment ions 0,2 A 5 , 0,2 A 5 -18 and 2,4 A 5 , and the lack of 0,3 A 5 ,...

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Báo cáo khoa học: Binding of hemolin to bacterial lipopolysaccharide and lipoteichoic acid An immunoglobulin superfamily member from insects as a pattern-recognition receptor doc

Ngày tải lên : 31/03/2014, 09:20

... the O-antigen and p arts of the i nner-core and outer-core p olysaccharide, and lipid A alone could also p artially compete f or hemolin binding to smooth LPS. Rough mutants Rd and Re, containing ... suggesting that LPS and LTAbindtothesamesitesonhemolinandthathemolin may have a higher afﬁnity for LTA. Hemolin was also observed to bind d irectly to i mmobilized LTA (Fig. 10). LPS and LTA are s ... micro-organis ms. We showed that hemolin binds to the surface of Gram- negative and Gram-positive bacteria and yeast, and caused aggregation of these micro-organisms. Binding of hemolin to the surface...

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determination of methanol and ethanol

Ngày tải lên : 26/05/2014, 17:25

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A comparative coes analysis of biodiesel, compressed natural gas, methanol, and diesel for transit bus system pptx

Ngày tải lên : 27/06/2014, 17:20

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Báo cáo y học: Esterified Hyaluronic Acid and Autologous Bone in the Surgical Correction of the Infra-Bone Defects"

Ngày tải lên : 03/11/2012, 11:35

... was elevated and the granulation tissue was removed showing the true extension and depth of the infra-bone defect. Debridement and root preparation were carried out with hand and ultrasonic ... by EHA and autologous grafting, 4 males and 5 females, all non smokers, with a mean age of 43,8 years for females, 40,0 years for males and 42 years for all the group, in good health and with ... immediately before treatment and at 10 days, and 6, 9, and 24 months after treatment . Clinical Measurements To assess the treatment results, the following pre-operative and intra-operative clinical...

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