structures and properties of substances

Syntheses, structures and properties of novel poly(amino ester

Ngày tải lên : 16/09/2015, 15:53

... SYNTHESES, STRUCTURES AND PROPERTIES OF NOVEL POLY(AMINO ESTER)S WU DECHENG (M Sc University of Science and Technology of China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ... types of amines in trifunctional amines was clearly determined On the basis of the clear understanding of the mechanism of the polymerizations and the reactivity sequence of the three types of amines ... polymerizations of trifunctional amines with an equimolar BDA and the properties of the poly(amino ester)s obtained Table 5.1 The conditions of the polymerizations of AEPZ, AMPD and MEDA with an...

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Mechanics and Properties of Composed Materials and Structures doc

Ngày tải lên : 16/03/2014, 22:20

... mechanism of opening and closing of cracks under cyclic load, transfer of shear stresses, anisotropic properties of strength and stiffness of masonry in horizontal and vertical direction, tensile and ... Andreas Öchsner Lucas F M da Silva Holm Altenbach • Editors Mechanics and Properties of Composed Materials and Structures 123 Editors Andreas Öchsner Department of Applied Mechanics Faculty of ... The effect of geometrical parameters and material properties of face sheets and core are studied on the face wrinkling of sandwich plates Comparison of the present results with those of plate theories...

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Tài liệu Nature and Properties of Micro-organisms doc

Ngày tải lên : 12/12/2013, 17:15

... (VZV) VZV: Chickenpox VZV: Shingles Re-activation of latent infection Suppression of cell mediated immunity Bacteria  Unicellular,  DNA and RNA  Binary  No prokaryotes fission mitochondria ... reducing opsonisation and protecting from phagocytosis  E.g Streptococcus pneumoniae in RTI  vaccination: pneumococcal; meningococcal A and C  GLYCOCALYX loose meshwork of fibrils extending ... cephalosporins and vancomycin lipoteichoic acid, septic shock Beta-lactamases    hydrolyse penicillins and cephalosporins secreted by Gram positive bacteria Within periplasm of Gram negative...

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Tài liệu Báo cáo khoa học: Identi®cation and properties of type I-signal peptidases of Bacillus amyloliquefaciens doc

Ngày tải lên : 21/02/2014, 03:20

... Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipU Cloning of sipV Cloning of sipV Cloning of sipV Cloning of sipV ... Cloning of sipV Cloning of sipV Cloning of sipV Construction of pOpacVh Construction of pOpacVh Cloning of sipW Cloning of sipW Cloning of sipW Cloning of sipW Cloning of sipW Cloning of sipW ... Construction of pOpacWh Construction of pOpacWh Construction of pOpacSh Construction of pOpacSh Construction of pOpacTh Construction of pOpacTh Construction of pOpacBh Construction of pOpacBh Construction...

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Báo cáo khoa học: Structure analysis of the ﬂavoredoxin from Desulfovibrio vulgaris Miyazaki F reveals key residues that discriminate the functions and properties of the ﬂavin reductase family pdf

Ngày tải lên : 07/03/2014, 02:20

... moiety of Arg51 and three atoms of FMN (N1, O2 and O3) In both FeR and M acetivorans avoredoxin, the corresponding residue is asparagine (Asn47 and Asn52, respectively) to which only the O2 atom of ... the Km and kcat values of E coli Fre for riboavin are reported as 2.5 lm and 52.4 s)1 with NADPH as the electron donor and 1.3 lm and 30.6 s)1 with NADH [13] For FMN, Km and kcat values of E coli ... of the logarithms of the concentration ratios for oxidized and reduced forms of the mediator versus that of recombinant avoredoxin Reduction titration of avoredoxin by NAD(P)H The reduction of...

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Báo cáo khóa học: Localization, puriﬁcation and properties of a tetrathionate hydrolase from Acidithiobacillus caldus pot

Ngày tải lên : 07/03/2014, 14:20

... puriﬁcation yield of the enzyme may be due to several reasons Copper and several other divalent ions stimulated the activity of the tetrathionate hydrolase and they and other cofactors may be present ... hydrolase of A caldus (Eur J Biochem 271) 279 The biochemical properties of tetrathionate hydrolase of A caldus were similar to those of other acidithiobacilli (Table 4) The speciﬁc activity of tetrathionate ... method of Lowry et al [27] using the BCA Protein Assay Kit (Pierce, Rockford, IL, USA) The molecular mass and subunit structure of the tetrathionate hydrolase were determined using MALDI-TOF MS and...

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Báo cáo khoa học: Origin and properties of cytoplasmic and mitochondrial isoforms of taurocyamine kinase pptx

Ngày tải lên : 07/03/2014, 21:20

... models for Arenicola TK and MiTK were constructed, based on the structures of chicken and human MiCKs Alignment of amino acid sequences of phosphagen kinases and construction of phylogenetic tree ... other hand, mitochondrial TK showed activity for taurocyamine, lombricine (30% of that of taurocyamine) and glycocyamine (7% of that of taurocyamine) Recombinant Arenicola MiTK was incapable of phosphorylating ... Alignment of mitochondrial targeting sequences of vertebrate and invertebrate MiCKs and Arenicola MiTK Sequences correspond to ubiquitous (uMiCK) and sarcomeric (sMiCK) MiCKs from man and chicken and...

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Báo cáo khoa học: Puriﬁcation and properties of a new S-adenosyl-Lmethionine:ﬂavonoid 4¢-O-methyltransferase from carnation (Dianthus caryophyllus L.) pot

Ngày tải lên : 08/03/2014, 08:20

... FEBS 2003 Fig Molecular structures of the flavanones (XVI-XVII) assayed as substrates to the flavonoid 4¢-OMT and the transformation product (XVIII) Fig Molecular structures of the isoflavones (XIX-XX) ... the method of Baayen and Elgersma [13], with a 500-lL drop of Fod conidial suspension at a concentration of · 106 conidiaÆmL)1; 20 additional plants, inoculated with a 500-lL drop of double distilled ... NaPi buffer, pH 3, and acetonitrile (6 : 1, v/v); separation was performed isocratically, at a flow rate of mLÆmin)1, and the volume of injected samples was 10 lL The amounts of the residual initial...

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Báo cáo Y học: Molecular cloning, bacterial expression and properties of Rab31 and Rab32 docx

Ngày tải lên : 08/03/2014, 16:20

... lg of platelet protein and 0.5 lg of GST and GST±Rab proteins; (B) an [a-32P]GTP overlay [17] of a nitrocellulose blot of a gel containing 40 lg of platelet protein, 0.5 lg of GST and 0.5 lg of ... form of Rab32 (see Discussion) Fig Puri®cation and properties of wild-type and mutant Rab31 and Rab32 expressed as GST±fusion proteins Samples of platelet particulate fraction protein and of puri®ed ... immunoblot of a gel containing 20 lg of platelet protein and 0.1 lg of GST and GST±Rab proteins, using a : 1000 dilution of anti-Rab31 antiserum; (D) a similar immunoblot using a : 1000 dilution of anti-Rab32...

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Báo cáo khoa học: "CONTROL STRUCTURES AND THEORIES OF INTERACTION IN SPEECH" potx

Ngày tải lên : 08/03/2014, 18:20

... p a b l e of r e t u r n i n g a s e r i e s of u n i q u e , c o r r e c t lexical items; even with interaction of the kind envisaged, it is doubtful that our current understanding of a c o u ... channel and a unique referent c h a n n e l ( s e e e x a m p l e (1)), a n d s o f o r t h T h u s , a c o m p l e t e m o d e l of SUS will i m p l e m e n t a t h e o r y of t h e t y p e s of ... i n t of a t t a c h m e n t of Who a s d i r e c t o b j e c t of w a n t will bc i g n o r e d by d e f a u l t in p r e f e r e n c e f o r t h e i m m e d i a t e a t t a c h m e n t of to...

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Báo cáo Y học: Trehalose-phosphate synthase of Mycobacterium tuberculosis Cloning, expression and properties of the recombinant enzyme pdf

Ngày tải lên : 17/03/2014, 10:20

... the cloning and expression of the M tuberculosis tps gene in E coli, and the production of active TPS in these cells The properties of the recombinant enzyme have been determined, and are compared ... M) of NH4HCO3 An aliquot of each fraction was removed and assayed for its radioactive content The radioactive peak was pooled and concentrated to dryness a number of times in the presence of ... identity and 6% similarity Fig shows the predicted amino acid sequence of the M tuberculosis TPS and its sequence alignment with those of homologous ORFs from several other mycobacteria and OtsA of...

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Báo cáo khoa học: Structures and mode of membrane interaction of a short a helical lytic peptide and its diastereomer determined by NMR, FTIR, and ﬂuorescence spectroscopy pdf

Ngày tải lên : 17/03/2014, 11:20

... studies of the interaction of antimicrobial peptide and lipid bilayers Biochem Biophys Acta 1462, 185–200 Epand, R.M & Vogel, H.J (1999) Diversity of antimicrobial peptides and their mechanism of ... region between 1610 and 1628 cm)1 is characteristic of an aggregated b sheet structure and the region between 1640 and 1645 cm)1 corresponds to a random coil The amide I region of an a helical structure ... Ó FEBS 2002 Mode of interaction of lytic peptides (Eur J Biochem 269) 3877 Fig FTIR spectra deconvolution of the fully deuterated amide I band (1600–1700 cm)1) of K4L7W (A) and K4L3l4W (C) in...

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preparation and properties of magnetic iron oxide nanotubes

Ngày tải lên : 20/03/2014, 13:06

... spectra of samples S2 (a) and S3 (b) can be exclusively indexed to ␣-Fe2 O3 , according to standard data (JCPDS 33-0664) In Fig 1(b) and (c), the reﬂection peaks of XRD patterns of S2 and S3, ... in sample S3 (e and f) B Lv et al / Particuology (2008) 334–339 and outer and inner diameters of 70–120 nm and 45–80 nm, respectively Fig 3(c) and (d) show the morphologies of Fe3 O4 nanotubes ... López-Urías, and Mu˜ oz-Sandoval (2005) n simulated the micromagnetic property of iron nanorings, and they found large coercive ﬁelds for din /dout > 0.5 (din and dout are the inner and outer diameters of...

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Báo cáo khoa học: Effect of mutations in the b5–b7 loop on the structure and properties of human small heat shock protein HSP22 (HspB8, H11) pptx

Ngày tải lên : 23/03/2014, 07:20

... importance of this part of molecule of the sHsp is supported by the fact that mutations in the loop connecting the b5 and b7 strands, or in the b7 strand of sHsp, often correlate with the development of ... the effect of a mutation in this part of the molecule on the structure and properties of human sHsp Oligomeric structure of HSP22 and its mutants All samples of recombinant HSP22 and its mutants ... The N- and C-terminal domains are indicated by N and C correspondingly All b-strands are numbered and the b5 and b7 strands are shown in red and blue, respectively G104 (equivalent to K137 of human...

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Báo cáo khoa học: Trehalose synthase of Mycobacterium smegmatis Puriﬁcation, cloning, expression, and properties of the enzyme ppt

Ngày tải lên : 23/03/2014, 13:20

... solution and all run at the same time in the same solvent Standards of trehalose and maltose are applied to the sides of the paper to determine the locations of these sugars, and those areas of the ... 0.5, and 10 mM initial concentrations of maltose (left side) or trehalose (right side) Samples were removed at times up to 22 h Properties of the TreS puriﬁed from M smegmatis Eﬀect of time and ... formation and characterization of the products The conversion of trehalose to maltose was measured by determining the amount of reducing sugar resulting from the production of maltose The amount of...

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Báo cáo khoa học: Puriﬁcation and properties of the glutathione S-transferases from the anoxia-tolerant turtle, Trachemys scripta elegans pdf

Ngày tải lên : 23/03/2014, 15:20

... studies characterized the properties of GST in hydroxylapatite Peaks and from control liver Isoelectric focusing Isoelectric focusing of GSTs from liver of aerobic and anoxic turtles is shown ... hydroperoxide as a substrate was not detected in Peak off hydroxylapatite Substrate and inhibitor proﬁles of Peaks and GST isozymes off of hydroxylapatite from aerobic control liver are summarized ... activities, and kinetic properties of the enzyme The current data document the presence of two isozymes of GST in turtle liver that are separable by column chro3608 W G Willmore and K B Storey...

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Báo cáo Y học: Puriﬁcation and properties of the extracellular lipase, LipA, of Acinetobacter sp. RAG-1 docx

Ngày tải lên : 23/03/2014, 21:20

... toward medium and long chain esters of pNP Maximal reaction temperature is 55 °C and LipA shows strong activity in the presence of metals, inhibitors, and organic solvents Based on these properties, ... (1999) Cloning and sequence analysis of the lipase and lipase chaperone- encoding genes from Acinetobacter calcoaceticus RAG-1, and redeﬁnition of a proteobacterial lipase family and an analogous ... appearance of a zone of clearing Effect of pH on lipase activity and stability Concentrated lipase preparations were diluted fourfold in NaH2PO4-NaOH buffer (50 mM) at various pH values and incubated...

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Báo cáo Y học: Chemical structures and immunolocalization of glycosphingolipids isolated from Diphyllobothrium hottai adult worms and plerocercoids ppt

Ngày tải lên : 24/03/2014, 03:21

... contained galactose and glucose: 75.5% and 24.5% in A-1, 68.8% and 31.2% in A-2, and 70.5% and 29.5% in A-3 MALDI-TOF MS spectra (Fig 4) proved that three fractions were CMH, and each of them was found ... fractions (Fig 3), each containing galactose and glucose: 66.6% and 33.4% in P-1, 79.6% and 20.4% in P-2, 90.0% and 10.0% in P-3, and 83.5% and 16.5% in P-4 MALDI-TOF MS spectra proved that four GSL fractions ... percentages of the total component Fig Methylation analysis and MALDITOF MS analysis of A-4 and A-5 (A) GLC chromatogram of partially methylated alditol acetates derived from A-4 (B) GLC chromatogram of...

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Báo cáo Y học: Puri®cation and properties of an alkaline proteinase of Fusarium culmorum doc

Ngày tải lên : 31/03/2014, 21:21

... buffer and 200-drop fractions were collected The absorbance values of these and of the chromatography fractions in subsequent steps were measured at 280 nm and their nonspeci®c proteinase and chymotrypsin/subtilisin-like ... 4.5, 5.0 and 5.5 (Na acetate), pH 6.0, 6.5 and 6.9 (Na citrate), pH 6.9, 7.5, 7.9, 8.3, 8.7 and 9.1 (Tris/HCl) and pH 9.2, 9.6, 10.0 and 10.4 (Caps) All buffers were 80 mM The activities of the ... in 30 mM buffers: Na acetate, pH 4.1 and 4.9; Na citrate, pH 5.9 and 6.4; or Tris/HCl, pH 7.7 and 8.5 The activity of each sample was measured after and 90 of incubation For measuring its thermal...

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Sythesis and properties of spinel NiAl2O4, CoAl2O4, ZnAl2O4

Ngày tải lên : 21/04/2014, 22:37

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