relationship between structure and biological activities of ribopolysaccharides
Báo cáo khoa học: In vitro analysis of the relationship between endonuclease and maturase activities in the bi-functional doc
Ngày tải lên :
17/03/2014, 10:20
... provides the first step in the study of the relationship between these two distinct activities Experimental procedures Expression of I-AniI I-AniI was expressed and purified as described previously ... determinations were performed for each nucleic acid substrate and yielded an average ratio of DNA/protein of 1.09 : and an average ratio of RNA/protein of 1.12 : Multiple-turnover (substrate in excess) DNA ... concentration of KCl, there was a correlation between inhibition of endonuclease activity and inhibition of splicing activity indicating that RNA binding can be monitored by measuring inhibition of the...
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Tài liệu Báo cáo khoa học: Design, structure and biological activity of b-turn peptides of CD2 protein for inhibition of T-cell adhesion ppt
Ngày tải lên :
19/02/2014, 13:20
... the structure of peptide cER consists of two b-turns, located at the N- and C-termini A comparison of the b-turn structure of cER with the similar region in the crystal structure of rat and human ... bonds between NH of Thr5 and CO of Arg2, as well as NH of Arg2 and CO of Thr5 Structure of cyclic hexapeptides – cYT peptide The NMR data of the cYT peptide were indicative of its flexible nature ... the peptide and the proximity of amide protons due to compact nature of the structure However, the coupling constant of most of the amide protons was in the range of 6–8 Hz, suggestive of rapidly...
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Tài liệu Báo cáo khoa học: The structure and biological characteristics of the Spirochaeta aurantia outer membrane glycolipid LGLB pdf
Ngày tải lên :
19/02/2014, 16:20
... Fragments of HSQC and HMBC spectra of compound Labels illustrate assignment of the amide linkage between the amino group of Asp and the carboxyl group of GalA residue E Scheme The structures of oligosaccharides ... linkages Amide linkage between C-6 of residue E and an amino group of the aspartic acid was identified on the basis of the HMBC correlation between H-2 of aspartic acid and C-6 of the GalA E, thus ... the linkage position, and between H-1 of a monosaccharide and H-5 of a glycosylating residue in the event of an a-(1–2)-linkage Respective HMBC correlations between H-1 and a carbon at the transglycosidic...
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Báo cáo sinh học: "Correlation between antibutyrylcholinesterasic and antioxidant activities of three aqueous extracts from Tunisian Rhus pentaphyll" potx
Ngày tải lên :
12/08/2014, 17:20
... presence of tannins and flavonoids by using the methods previously described by Mansour et al [20] Two Page of milligrams of each extract were dissolved in ml of water The identification of major ... employed: 1.5 ml of phosphate buffer 50 mM pH = 7.2, containing 0.26 mM of 5,5’-dithiobis-2- nitrobenzoic acid (DTNB), 10 μl of human plasma and 10 μl of the tested compound (1, 10 and 100 μg/ml ... number of electrons a given molecule can donate, and the mechanism of antioxidant action The radical-scavenging activities of the extracts measured as decolorizing activity following the trapping of...
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Study on chemical constituents and biological activities of some plants of boerhaavia genus (nyctaginaceae)
Ngày tải lên :
24/08/2015, 12:40
... 3.1.4 Chemical structure of flavonoids 68 3.1.5 Chemical structure of nitrogen compounds 78 3.1.6 Chemical structure of phenolic compounds 83 3.1.7 Chemical structure of steroids and terpenoids ... OA of the mixed solution (*) with replacement 25µl of buffer B, instead of 25µl of samples OA2: the OA of the mixed solution (*) with replacement 50µl of buffer B, instead of 25µl of samples and ... Hz, H-10) and 6.01 (s, H-6) The splitting of signals and coupling constants of protons at δH 8.28, 7.01 and 6.94 demonstrated two ortho-coupled protons of H–1, H–2 and H–3 of the A ring and the...
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Study on chemical constituents and biological activities of the lichen parmotrema Praesorediosum(NYL ) hale(parmeliaceaf)
Ngày tải lên :
15/12/2015, 15:22
... elucidation of compound PRAES-C3 89 3.1.5.7 Structure elucidation of compound PRAES-C4 91 3.1.5.8 Structure elucidation of compound PRAES-C21 93 3.1.6 Chemical structure of dibenzofurans ... IR, MS and NMR spectra of PRAES-C1 146 Appendices 8-15: IR, MS and NMR spectra of PRAES-E14 149 Appendices 16-21: MS and NMR spectra of PRAES-C10 153 Appendices 22-26: MS and NMR spectra of PRAES-C11 ... elucidation of compound PRAES-E19 40 3.1.1.6 Structure elucidation of compound PRAES-C2 41 3.1.2 Chemical structure of mononuclear phenolic compounds 45 3.1.2.1 Structure elucidation of...
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STUDY ON CHEMICAL COMPOSITIONS AND BIOLOGICAL ACTIVITIES OF annona glabra l
Ngày tải lên :
28/04/2016, 17:48
... compositions and biological activities of Annona glabra L So, the thesis’s title was proposed to be "Study on chemical compositions and biological activities of Annona glabra L." Subject and contents of ... spectrum of Figure 4.32 COSY spectrum of 4.2 Evaluation of biological activities Figure 4.29 DEPT spectrum of Figure 4.31 HMBC spectrum of Figure 4.33 NOESY spectrum of t 4.2.1 Cytotoxic activity of ... using for determination of chemical structure of compounds General method using for determination of chemical structure of the compounds is a combination of physical parameters and modern spectroscopic...
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Effect of secondary structure on biological activities of antimicrobial peptides
Ngày tải lên :
24/10/2016, 11:20
... silica cell and its ellipticity was scanned from 190 to 250 nm at a sensitivity of 100 millidegrees, response time of 1s, bandwidth of nm, and a scan speed of 100nm/min The values of molar ellipticities ... the importance of a lack of structure in nondenaturing conditions but an inducible structure in the presence of the hydrophobic environment of the membrane, (ii) the presence of a positively ... amphipathic structure is not the critical property of AMPs for the specificity of activity in the present study, and the activity of AMPs depends on the maintenance of a proper ratio between hydrophobic...
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The Relationship between Interdependence and the Outcome of Decision Making
Ngày tải lên :
11/12/2016, 11:09
... relationship between task interdependence and the outcome of decision making Hypotheses 6a and 6b postulated a mediating effect of the avoiding coping style in the relationship between task and ... and/ or distributive behavior of the relationship between forms of interdependence and (measures of) team performance (e.g., Janssen et al., 1999; Somech, 2008; Somech et al., 2009) The type of ... a sense of belonging and (2) feelings of morale, as a consequence of being part of a group (Bollen & Hoyle, 1990, p 484) The extent to which team members sense comfort and a feeling of belonging...
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báo cáo hóa học: " Factor structure and internal consistency of the 12-item General Health Questionnaire (GHQ-12) and the Subjective Vitality Scale (VS), and the relationship between them: a study from France" potx
Ngày tải lên :
18/06/2014, 19:20
... French and to examine its factor structure and internal consistency for the same population The relationship between the two instruments Evidence indicates a strong link between vitality and a ... interested in testing this hypothesis and examining whether there is a relationship between psychological distress and vitality The relationship between the GHQ-12 and the VS has not yet been tested ... coefficient and was found to be 0.83, well above the threshold for a satisfactory value Relationship between the GHQ-12 and the VS The correlation between the GHQ-12 and the VS scores was investigated and...
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ho and wong - 2001 - a study of the relationship between cg structure and the extent of voluntary disclosure
Ngày tải lên :
06/01/2015, 19:46
... monitoring quality and is detrimental to the quality of disclosure He found a significant negative relationship between the existence of a dominant personality and the quality of share-option disclosure ... Percentage of companies disclosing Future prospects of the company Description of company products and services China business review Sales and marketing network Acquisition and disposal activities ... Hong Kong Exchange and Clearing, HKEx), and the Statements of Standard Accounting Practice (SSAPs) issued by the Hong Kong Society of Accountants (HKSA) Overall, the scope of disclosure requirements...
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Health and Work of the Elderly: Subjective Health Measures, Reporting Errors and the Endogenous Relationship between Health and Work doc
Ngày tải lên :
05/03/2014, 21:20
... models of labour supply, these measures tend lead to an overestimate of the effect of health and an underestimate of the effect of economic incentives This paper focuses on the issue of reporting ... OG G The variables ε1 and ε1 are random disturbances, f1 describes the relationship between true health and its instruments and f2 represents reporting behaviour Those out of work are more inclined ... sources of income, attitude towards retirement, housing, health and a variety of socioeconomic variables Internal evaluations of item non-response and representativeness of the first wave of data...
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Báo cáo khoa học: Molecular dissection of the biosynthetic relationship between phthiocerol and phthiodiolone dimycocerosates and their critical role in the virulence and permeability of Mycobacterium tuberculosis doc
Ngày tải lên :
23/03/2014, 09:20
... i.e DIMs and PGL-tb; and (b) to address the question of the function of the two related molecules DIM A and DIM B According to the accepted model of DIM and PGL biosynthesis [17], DIM A and PGL-tb ... those of DIM A and DIM B were purified by preparative TLC and analyzed by MALDI-TOF MS The mass spectrum of the purified lipids exhibiting a TLC mobility similar to that of DIM B showed a series of ... modification A Effect of the absence of DIM A on the virulence of M tuberculosis in mice B Fig MALDI-TOF mass spectra of the purified glycolipid from M tuberculosis PMM74:pPET1 (A) and of PGL-tb from...
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Crystal structure, optical properties and biological imaging of two curcumin derivatives
Ngày tải lên :
01/07/2014, 13:22
... later The structures of A and B are shown in Fig 2, which revealed that the molecular structures of A and B are similar and also symmetric to our satisfaction Selected bond lengths ( and bond ... cross-section values of s of the compounds A and B are 386 and 418 GM (1 GM ¼ 10À50 cm4 s photonÀ1 moleculeÀ1) in DMF solution, respectively 3.4 Cytotoxicity assay and biological images of two-photon ... 0.1701 1.028 Gof on F2 314 G Xu et al / Dyes and Pigments 101 (2014) 312e317 Fig Molecular structure of A and B showing 50% probability displacement 3.2 Linear absorption spectra and single-photon...
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Báo cáo khoa học: "Relationship between seasonal cambial activity, development of xylem and phenology in Azadirachta indica growing in different forests of Gujarat State" pot
Ngày tải lên :
08/08/2014, 14:20
... alternations between growing and resting phase It is true that correlation between external and internal factors, and activity of cambium does not necessarily mean a simple relation between the ... hundred measurements of cambial layers were selected randomly to obtain the mean and standard deviation Seasonal phenological changes of the trees were recorded at the time of each sample collection ... prominent in MDF and DDF The length of fusiform cambial cells ranges from 291 to 440 µm and 17 to 23 µm in width Cambial rays are uni-multiseriate and 165 to 361 µm and 47 to 87 µm in height and width...
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Báo cáo sinh học: "Bactericidal activity of oxacillin and glycopeptides against Staphylococcus aureus in patients with endocarditis: Looking for a relationship between tolerance and outcome" doc
Ngày tải lên :
12/08/2014, 17:20
... activity of oxacillin and glycopeptides against Staphylococcus aureus in patients with endocarditis: Looking for a relationship between tolerance and outcome Annals of Clinical Microbiology and Antimicrobials ... recruitment of patients AR and AG collected strains and performed on admission susceptibility tests AS and RP analysed the data GS and FB revised the manuscript All authors read and approved ... Approved Standard Clinical and Laboratory Standard Institute, Wayne, PA, 2009, M07-A8 18 Clinical and Laboratory Standard Institute: Methods for Determining Bactericidal Activity of Antimicrobial...
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In this paper, we investigate the relationship between migration and species distribution in multizone environment. We present a discrete model for migration of three competing species over three zones. We prove that the migration tactics of species leads
Ngày tải lên :
16/10/2015, 09:09
... upper bound of the transition rate n out of any state: δ = i=1 (µi + λi ), where µi is the reparation rate of component i and λi is the maximum of the failure rates of component i Most of the component ... at random or with some heuristics Simulations of the time intervals are ran in parallel The ending states of each simulation are computed at the end of the simulation of the time intervals and ... shared between two subtrees The DFT is represented by a function F (the so-called structure function [5]) and vector (X1 , Xn , W1 , Wp ) where n is the number of components of the models (and...
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Assignment the womens liberation movement effect of relationship between men and women
Ngày tải lên :
24/09/2016, 02:03
... change on the relationship between men and women After all, Women’s Liberation Movement is really a wonderful revolution of human race It has altered the relationship between men and women so ... face of the world This alteration has brought gender balance and social justice to women The Women’s Liberation Movement The Women’s Liberation Movement: Effect of Relationship between Men and ... women in Europe and America suffered cruel and brutal treatment from men They were housewives in the family and obeyed husbands The Women’s Liberation Movement After the success of women’s liberation...
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Financial liberalisation and the relationship between finance and growth
Ngày tải lên :
24/10/2012, 08:50
... contingent relationship to growth Klein and Olivei use a summed version of the 0,1 IMF indicator for 1986-95 Levine and his coauthors, in a series of papers (King and Levine 1993; Levine and Zervos ... Onset and Severity of Genocides and Politicides.” Journal of Conflict Resolution 41(3):331-360 La Porta, Rafael, Florencio Lopez-de-Silanes, Andrei Sheifer, and Robert W Vishny 1998 “Law and Finance” ... problem of empirical political economic scholarship generally – nations at similar levels of political, social, and economic development have similar “clusters” of political economic policies and structures...
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