titration of oxalic acid against potassium permanganate

Ngày tải lên: 07/07/2014, 00:20

... presence of 2.0 m M a-CD, b-CD, and c-CD. (B) The concentration dependence of c-CD on NMR spectra of 2.0 m M GA. The ratios of c-CD to GA are indicated. Y. Izutani et al. Interaction of gymnemic acid ... equimolar concentration of c-CD. Relative frequency of molecule number was shown against the logarithm of molecule diameter. Interaction of gymnemic acid with cyclodextrins Y. Izutani et al. 6158 ... School of Agriculture, Kyoto Prefectural University, Japan 2 Department of Applied Biology, Kyoto Institute of Technology, Japan 3 Faculty of Medicine, Tottori University, Yonago, Japan Gymnemic acid...

Ngày tải lên: 16/03/2014, 14:20

... assay of Abs against teichoic acid to 72% for assays of antibody to peptidoglycan and α-toxin. The specificity of assays for antibody to cell wall antigens (peptidoglycan and teichoic acid) ... basis of their immunoblot profile against total S. aureus cell lysate as well as their serum IgG response to cell wall antigens peptidoglycan and teichoic acid. Whether the presence of antibodies ... quantities of protein utilizing the principle of protein-dye binding. Anal Biochem 1976, 72:248-254. 17. Laemmli UK. Cleavage of structural proteins during the assembly of the head of bacteriophage...

Ngày tải lên: 02/11/2012, 11:08

... 2.7: Hiệu quả kích kháng của oxalic acid lên tỉ lệ diện tích vết bệnh trên lá (%) ở các thời điểm 40, 50 và 60 NSKS 42 Hình 2.8: Hiệu quả kích kháng của oxalic acid lên tỉ lệ bệnh thối cổ bông ... 2.13: Hiệu quả kích kháng của oxalic acid lên tỉ lệ diện tích vết bệnh trên lá (%) ở các thời điểm 40, 50 và 60 NSKS 50 Hình 2.14: Hiệu quả kích kháng của oxalic acid lên tỉ lệ bệnh thối cổ bông ... 2001) và mô học (Huỳnh Minh Châu và ctv,2001). 6. Đặc tính oxalic acid và tác động của nó đối với cây trồng Tên hóa học: OXALIC ACID Công thửc hóa học: Thường tồn tại ở dạng ngm 2 phõn t...

Ngày tải lên: 10/04/2013, 21:05

... dinitrobenzoic acid (10 mm 3,5-dinitrobenzoic acid in 0.4 m Tris ⁄ HCl, pH 8.0), 10 l Lof parasite protein extract or 10 lL of PLA2 bee venom sup- plied by the kit as positive control, and 5 lL of the ... mixing 100 l L of 100 l m ZnSO 4 .H 2 O, 200 lL of 0.3 m Na 2 CO 3 pH 10, 10 lL of com- pound (MA or EDTA as control) and 6 lL of Eriochrome Black T (5 mgặmL )1 in ethanol, pH 10). The pH of the Erio- chrome ... the processing of apicoplast protein leader sequence. Inhibition of any of these activities could contribute to MA interference in the maturation of the parasite. Polypharmacology of MA The observed...

Ngày tải lên: 14/02/2014, 14:20

... Cagliero 6. AN ASSESSMENT OF LONG TERM FEEDING OF AMINO ACID CHELATES 106 Robert B. Jeppsen SECTION 2 CATTLE 7. THE USE OF AMINO ACID CHELATES TO ENHANCE THE IMMUNE SYSTEM 117 Robert T. Coffey 8. THE USE OF AMINO ACID ... animals is coming of age. The advantage of using amino acids to chelate essential minerals and render them more biologically available to the animal offers greater possibilities to regulate the amount of a ... ions is dependent upon numerous factors, including the levels of the elements ingested, the age of the animal, Ph of the intestinal contents and environment, the state of the animal with respect to deficiency or adequacy of the element, and the...

Ngày tải lên: 15/02/2014, 16:20

... amount of precipitation in the presence of high concentrations of Arg-HCl in the absence of the chaperone precluded analysis of the effect of this concentration on the protective ability of aB-crystallin. Reduction-induced ... with a number of functional groups, including the aromatic side chains of some amino acids, through a stacking mechanism [42]. The interaction of arginine with aromatic amino acids of aB-crystallin ... chaperone activity of aB-crystallin [27], which was reported to occur via enhancement of the dynamics of subunit assembly [28]. However, to date there have been no reports of the effects of such compounds...

Ngày tải lên: 18/02/2014, 16:20

... phosphorylation of recombinant, truncated, GIRK1 by the catalytic subunit of PKA. In the lower panels, the mean values and standard error of mean values of relative specific radioactivity of the different ... contribution of GIRK1 isoforms to PKA-mediated effects on heterooligomeric channels, with the aim of understanding in more detail this important regulation concerning G-protein activation of K + channels. Experimental ... this distal part is unique for GIRK1 among the Kir3.x isoforms. Further truncations of the C-terminus revealed a 49 amino acid stretch (amino acids 362–411) that was the most prominent target for...

Ngày tải lên: 07/03/2014, 00:20

... 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 ... membranes from the detergent effects of excess fatty acids by sequestering them, and (d) modulation of cell growth and differenti- ation by transport of fatty acids to the nucleus where they activate ... 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 FABPs have isoelectric points of approximately...

Ngày tải lên: 07/03/2014, 06:20

... independent regulation of these two genes and of the accumulation of bryonolic acid and phytosterols. It is noteworthy that the changes in their mRNA levels correlated with the accumulation of the respective ... Nucleotide and amino -acid sequences were analysed by Genetyx-Mac software (Software Development, Tokyo, Japan). This clone was designated LcIMS1. Fig. 1. Pathways of bryonolic acid biosynthesis in ... contents of bryonolic acid and total sterols were calculated from the peak area of their trimethylsilylated products relative to that of the internal standard. Sterol content was the total content of stigmasta-7,22-dien-3b-ol,...

Ngày tải lên: 08/03/2014, 23:20

Ngày tải lên: 09/03/2014, 18:20

Ngày tải lên: 09/03/2014, 22:20

... [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 prod- ucts when etiolated ... non-enzy- matic 1 O 2 -mediated peroxidation of polyunsaturated fatty acids forms part of the EXECUTER1-dependent stress response program in the flu mutant of Arabidop- sis thaliana. Plant J 54, 236–248. 35 ... in many of these defence responses is jasmonic acid. It is the aim of this mini- review to summarize recent findings that highlight the role of jasmonic acid during programmed cell death, plant defence...

Ngày tải lên: 16/03/2014, 02:20

... stopped by addition of 0.5 mL of ice-cold stopping solutions (0.3 mgặmL )1 of thymi- dine for DNA, 0.3 mgặmL )1 of uracil for RNA, and 0.3 mgặmL )1 of cycloheximide plus 1 mgặmL )1 of leucine for protein), ... to  30% of the initial rate of UBHY-R, whereas the rates of synthesis of DNA and RNA were 70% and 60% of the initial values, respectively. These data suggest that the primary effect of eIF5A ... Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA 2 Department of Biological Sciences, School of Pharmaceutical Sciences, Sa˜o...

Ngày tải lên: 16/03/2014, 06:20

... regu- lation of cholesterol transport by arachidonic acid and the release of arachidonic acid in specialized compartment of the cells could offer novel means for understanding the regulation of steroid ... AA-CoA Control C )nietorpg m/gn (enoretsegorP b bb 0.70 0.20 0.10 0.00 )nietorpgm/gn(enoretsegorP 0.85 Arachidonic acid Arachidic acid Oleic acid A Control + NDGA + CHX None 22(R)OH- cholesterol Fig. 3. Effect of fatty acids, CoA derivatives of fatty acids, BPB, NDGA and malonyl-CoA ... Podesta ´ Department of Biochemistry, School of Medicine, University of Buenos Aires, Argentina Arachidonic acid (AA) is a fatty acid with 20 carbons and four cis double bonds that are the source of its flexibility...

Ngày tải lên: 16/03/2014, 12:20

... mechanism of acid hydrolysis of the 3,6-anGal-containing galactans. Results and Discussion Identification of a complete series of odd-numbered oligosaccharides resulting from mild acid hydrolysis of ... [21]. Hydrolysis of i-carrageenan was extended to 3 h. Small- scale (10 mg) hydrolysis of j-carrageenan was also carried out with various organic acids, including TFA, oxalic acid, maleic acid, phthalic acid, ... fumaric acid, citric acid, formic acid, succinic acid, and acetic acid, at 60 °C for 1.5 h. Reductive hydrolysis of j-carrageenan and agarose was carried out on a large scale with addition of 0.2...

Ngày tải lên: 23/03/2014, 04:21

Ngày tải lên: 23/03/2014, 11:20

Ngày tải lên: 23/03/2014, 21:20

Ngày tải lên: 24/03/2014, 00:21

Ngày tải lên: 24/03/2014, 03:21