properties of matter from simulation results

... obtained from Fedors (see Ref 22) with the exception of the value of SO2 where a value of 26,000 was used Internal data of The Dow Chemical Co The data were obtained under conditions of ASTM D-638 ... advantages: Properties can be calculated from only four basic molecular properties These are the molecular weight, van der Waals volume, length of the repeat unit, and the Tgof the polymer Since these properties ... data (see Fig 8)’the results give a correlation index of 0.988 and a standard deviation of the regression of 0.334 The final form for the room-temperature modulus in units of Pascals is I 0.46...

Ngày tải lên: 01/04/2014, 00:20

... made of matter Matter is made of small parts A hand lens helps you see small parts up close Some things you cannot see are made of matter Air has matter! Properties of Matter Different kinds of matter ... 09 08 07 06 05 Matter What is matter? Everything is made of matter Matter is anything that takes up space and has mass Mass is how much matter is in something All things made of matter have mass ... matter have different properties A property is something you can observe about an object Color is a property of matter Shape is a property of matter Size is a property of matter too What colors...

Ngày tải lên: 08/06/2015, 13:46

... and Properties of Matter Chapter 4: Chemical Bonding and Properties of Matter The chemical bonding in a substance influences the shape of its molecules, and molecular shape influences the properties ... the structure of metals consists of aggregates of crystals TO PREVIOUS SLIDE UNIT Chapter 4: Chemical Bonding and Properties of Section 4.1 Matter Properties of Metals Melting and Boiling Points ... charges of the ions affect the type of crystal structure that an ionic compound will form TO PREVIOUS SLIDE UNIT Chapter 4: Chemical Bonding and Properties of Section 4.1 Matter Properties of Ionic...

Ngày tải lên: 01/12/2015, 22:44

... Journal of Medicine, 1993, 329:1753–1759 Health aspects of air pollution Results from the WHO project “Systematic review of health aspects of air pollution in Europe” Copenhagen, WHO Regional Office ... emissions from this category from 7% in 2000 to 1% in 2020 The share of exhaust emissions from diesel passenger cars is calculated to decline from 12% to 6% in 2020, while the contribution from off-road ... evaluation of the available, though often limited, scientific evidence Discussion of the limitations of the existing information is included in each of the chapters While the general objective of the...

Ngày tải lên: 17/02/2014, 11:20

... alignment of N-terminal (A ⁄ B) domains of LdEcR and DmEcR (A) Alignment of EcRA from the two species (B) Alignment of DmEcRB1, DmEcRB2, and LdEcRB (C) Alignment of most carboxy-terminal side of the ... (A ⁄ B) domains of EcR are also divergent in the two insect species [31] (Fig 1), although all of the isoforms from both species share almost complete identity over a stretch of 35–37 amino acids ... Effects of selected agonists on EcR–USP transcriptional activity in the two species In an initial series of experiments, the basal and ligand-induced properties of the three D melanogaster isoforms...

Ngày tải lên: 18/02/2014, 08:20

... obtained from Novagen Expression of Pt-gdh under the control of araB promoter was induced for h at 30 °C by the addition of 0.2% arabinose when the A600 of the growing culture reached 0.5 The cells from ... explain the dual cofactor specificity of the enzyme from T acidophilum Cloning and expression of the P torridus glucose dehydrogenase gene Primers were constructed using the data of the complete ... torridus of 60 °C, GdhA displayed 88% of its maximal activity The pH optimum of the pure enzyme was determined to be pH 6.5, but at the physiological pH of 4.6 found in the cytoplasm of Picrophilus...

Ngày tải lên: 19/02/2014, 16:20

... affinity with chain 3381 Enzymatic properties of chitinase A from Vibrio carchariae length of chitooligomers implies that the binding site must be composed of an array of subsites, probably six GlcNAc ... obtained from the hydrolysis of (GlcNAc)4 These oligomers presumably arose from the condensation of two reaction intermediates, namely the pentamer from (GlcNAc)2+(GlcNAc)3, the hexamer from (GlcNAc)2+(GlcNAc)4 ... Km and kcat values obtained from the FEBS Journal 272 (2005) 3376–3386 ª 2005 FEBS Enzymatic properties of chitinase A from Vibrio carchariae Table Kinetic parameters of chitinase A with various...

Ngày tải lên: 20/02/2014, 01:20

... poreforming peptide of 45 amino acid residues from the venom of the South African scorpion Parabuthus schlechteri [4] Here we describe the isolation of new pore-forming peptides from the venom of Opistophtalmus ... 50% of growth of the tested organisms at a concentration of lM at most (see Table 3) Opistoporin is the most active, inhibiting 50% of growth of N crassa and F culmorum at a concentration of 0.8 ... inhibition of growth of N crassa and fluorescence of SYTOX green could be observed (Fig 5B) Similar results were obtained for all combinations of peptides and fungi This suggests that inhibition of fungal...

Ngày tải lên: 21/02/2014, 15:20

... FT-IR spectroscopic properties of the caa3oxidase from T thermophilus in the presence and absence of cyanide, and compare the observed properties to previous reports on members of the heme copper ... originating from heme c, with contributions from the formyl groups and from the geranyl side chain expected from heme a and a3 In addition to the signals of the hemes, the reorganization of the polypeptide ... assignments of difference signals to polypeptide backbone modes Fig Oxidized-minus-reduced FT-IR difference spectra of the caa3oxidase from T thermophilus Results obtained for a potential step from )0.5...

Ngày tải lên: 21/02/2014, 15:20

... ratio of 6PF2K activity to Fru-2,6-P2ase activity of the smaller form of the bifunctional enzyme was far lower than that of the larger form of the enzyme [11] This is reminiscent of the enzyme from ... concentration of each of these metabolites and of Pi, as discussed previously [1] In conclusion, the kinetic properties of the recombinant enzyme are in agreement with those of the enzyme isolated from ... blots of total RNA from spinach leaves, the same probe hybridized to a single band of % 2500 bp, corresponding to the length of the isolated cDNA (Fig 2A) Expression of the coding region of 6PF2K/Fru-2,6-P2ase...

Ngày tải lên: 22/02/2014, 04:20

... avoredoxin Figure shows the results of linear regression analysis of the logarithms for the redox ratio of the mediator versus that of recombinant avoredoxin The redox potential of oxidized avoredoxin ... both of which confer reduction of a avin by receiving electrons from NADH or NADPH; however, these activities of avoredoxin were much lower than those of A fulgidus FeR The FeR activity of A ... 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...

Ngày tải lên: 07/03/2014, 02:20

... similar to that of the family 19 chitinase from barley, the best studied of the plant chitinases [9,12,13,27,28] and essentially identical to that of the catalytic domain of ChiC from S griseus ... mg of ChiG per liter of culture) Tests with several substrates showed that removal of the His tag by tobacco etch virus NIa protease (TEV-protease) did not affect the catalytic properties of ... hypothesis is not confirmed by the present analysis of enzymatic properties of ChiG, or by our analysis of the ChiG and ChiC structures Despite the deletion of the B-loop, the two putative catalytic residues...

Ngày tải lên: 07/03/2014, 11:20

... 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 ... production of p-nitrophenol was measured spectrophotometrically at 405 nm One unit of the acid phosphatase activity was defined as the amount of protein which catalysed the formation of lmol of p-nitrophenol ... SD) from two independent experiments Table Purification of tetrathionate hydrolase from A caldus One unit (U) is defined as the amount of tetrathionate hydrolase required for the conversion of lmol...

Ngày tải lên: 07/03/2014, 14:20

... plot of 1/v vs 1/[s] Enzyme concentration was lM while the substrate was used at concentrations ranging from 0.15 to lM Fig PAGE of the purified flavonoid 4¢-OMT from carnation The position of molecular ... base of the amount of its kaempferide methylated derivative (tR 4.68 min) formed in the course of time Fig 10 Lineweaver–Burk plot of F 4¢-OMT activity for kaempferol at different concentrations of ... Shatz, G & Grisebach, H (1982) Enzymic synthesis ¨ of lignin precursors Purification and properties of 4-coumarate: CoA ligase from cambial sap of spruce (Picea abies L.) Eur J Biochem 123, 583–586...

Ngày tải lên: 08/03/2014, 08:20

... mechanism of chlorite dismutase Several considerations are important in the determination of the reaction mechanism of chlorite dismutase First of all, the valence of Cl in ClO2– is reduced from + ... Ches, pH Trace B, 50 mM potassium phosphate, pH Trace C, Simulation of trace B Trace D, Difference spectrum of pH – pH Trace E, Simulation of Trace D EPR conditions: microwave frequency, 9.39 GHz; ... buffer, pH 7.0 Trace B, Simulation of trace A Trace C, 90 lM chlorite dismutase with mM sodium nitrite in 100 mM potassium phosphate buffer, pH 7.0 Trace D, Simulation of trace C Simulation parameters...

Ngày tải lên: 08/03/2014, 16:20

... detection of significant similarity to a variety of cysteine proteinases, which could be confirmed by the IMPALA BLOCKS homology search tool On the basis of these results, a full-length alignment of two ... fragmentation of the b-expansin at the end of the growth phase was also shown, possibly protecting the growing wall from rupturing Concurrent with this, exogenous application of large amounts of expansin ... wall extension [17] A similarity of the C-terminal region of expansins to CBDs of bacterial cellulases was further suggested on the basis of conserved spacing of Trp residues [40] As shown in...

Ngày tải lên: 08/03/2014, 22:20

... mixture of 10 mL taken from each of the five reaction mixtures The method consists of adding various iodoacetamide and iodoacetate ratios to portions of the protein to generate a complete spectrum of ... activity The action of PfPDO in catalysing interchange of intramolecular disulfides in scrambled RNase results in restoration of the native disulfide pairing and the concomitant return of RNase activity ... participation of both N-terminal and C-terminal active sites Refolding of the scrambled RNase in the presence of PDI was used as a positive control, and the absence of the recovery of the RNase...

Ngày tải lên: 16/03/2014, 16:20

... demonstrated, % 3% of the protein content of membrane preparations of M barkeri consisted of Ech, but the concentration of Hdr was also quite high This prevented a specific study of the Fe–S clusters ... disadvantage of the use of redox mediators in redox titrations is that they sometimes dramatically change the redox properties of [NiFe]-hydrogenases [27,41] The interaction of H2 with hydrogenases offers ... analysis of some thermodynamic properties of iron-sulphur centres in site I of mitochondria Biochem J 186, 111–117 23 Albracht, S.P.J & Hedderich, R (2000) Learning from hydrogenases: location of a...

Ngày tải lên: 17/03/2014, 10:20

... entirely removed from FeFe protein preparations in view of the lability of the protein even in the presence of only trace amounts of oxygen [8] For the sake of direct comparison, MoFe protein samples ... was Ó FEBS 2002 Redox properties of the FeFe protein (Eur J Biochem 269) 1653 Fig Redox titration of the cofactor and P-cluster EPR signals deriving from the MoFe protein of R capsulatus The redox ... reduction of the semireduced to the reduced and EPR silent state of the FeMo cofactor [45] DISCUSSION The FeMo cofactor, one of the two unique metal clusters present in the MoFe protein component of...

Ngày tải lên: 18/03/2014, 01:20

... properties to Program Offices (e.g., Office of Water, Office of Solid Waste and Emergency Response, Office of Prevention, Pesticides and Toxic Substances) and Regional Offices Also, SPARC has been used ... number of molecular structures The values of these latter parameters, in most instances, must be derived from measurements or from the expert judgment of specialists in that particular area of chemistry ... Effect 3.4.3.3 Temperature Effect 3.4.4 Results and Discussions 3.4.5 Conclusion PHYSICAL PROPERTIES 4.1 Estimation of Physical Properties 4.2 Physical Properties Computational Approach 4.3 SPARC...

Ngày tải lên: 22/03/2014, 14:20