grafting and surface properties of hyperbranched polymers

... approach the surface The diffusion of H atoms on the surface, from the surface to the first subsurface, and from the first subsurface to the second subsurface, optimally occurs via the paths of HS? ... Eb, A, and N represent the total energy of the pre-relaxation model, total energy of the model after relaxation, bulk energy per atom, surface area of the cut surface structure, and num-ber of atoms ... relaxed and stable position is significantly different from the surface height Diffusion of H atoms We studied the diffusion properties of H atoms on the V surface H2molecules at the surface of V

Ngày tải lên: 13/01/2020, 04:15

... head-to-tail P3HT _ Investigation of the effects of the synthesis parameters on the properties of the synthesized P3HT: In the first step of the synthesis of 2-bromo-3-hexylthiophene from 3-hexylthiophene, ... of P3HT via a three-step polymerization process, including: Synthesis of 2-bromo-3-hexylthiophene from 2-bromo-3-hexylthiophene, synthesis of 2-bromo-3-hexyl-5-iodothiophene, and synthesis of ... feeding time of 3-hexylthiophene (60 minutes), reaction time of 60 minutes, and an NBS:3HT moalr ratio of là 1,1:1 Under these conditions, the collected product contained 97,4% of 2-bromo-3-hexylthiophene,

Ngày tải lên: 22/01/2021, 20:38

... Syntheses and photoluminescence properties of new Zn(II) and Cd(II) coordination polymers prepared from 5-sulfoisophthalate ligand Fatih SEMERC˙I∗ Department of Energy Systems Engineering, Faculty of ... Zn(II) and Cd(II) coordination polymers have recently attracted attention because of their potential as photoactive materials.6 Investigations of the photoluminescent properties of co-ordination polymers ... organic ligands.9 These coordination polymers can be synthesized depending on the combination of metal ions, polycarboxylate, and N-donor con-necting ligands In the synthesis of coordination polymers,

Ngày tải lên: 13/01/2022, 00:20

... presence of different phases, amorphous structure of the film and formation of clusters on the surface as depicted from AFM images of the film [17] In Figure 12, temperature dependence of specific ... AFM images of thin films (a: as-deposited, b: 100 °C-annealed, c: 150 °C-annealed). Trang 6where d is thickness The plots of T(%) vs λ, band gap vs hv, k and n vs λ of as-deposited and annealed ... as-deposited and annealed thin films are sensitive to light The electrical conductance increases with annealing on account of the increase of particle size, the decrease of energy band gap and the change

Ngày tải lên: 13/01/2022, 00:27

... studies of the reductive half-reaction of AADH Studies of the reductive half-reaction were performed to allow comparison of kinetic parameters for native and recombinant AADH Reduction of the TTQ cofactor ... Tryptophan tryptophylquinone cofactor biogenesis in the aromatic amine dehydrogenase of Alcaligenes faecalis Cofactor assembly and catalytic properties of recombinant enzyme expressed in ... orf-4 and hemE) all putatively transcribed in the same direction [7] The second and fifth genes (aauA and aauB) encode the large and small subunits of AADH, respectively The genes aauD and aauE

Ngày tải lên: 19/02/2014, 07:20

... of parabutoporin, opistoporin, melittin and mastoparan in absence and presence of mM extracellular Mg2+ ions Bacteria were incubated with twofold serial dilutions of peptides and inhibition of ... 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

... utilization The physical and mechanical properties of bamboo vary with the age of the bamboo and the height of the culm [Chauhan 2000] In general, SG and the properties of bamboo drop from the ... bending properties, along longitudinal and radial directions of one, three, and five year old bamboo and determine the correlation between SG and bending properties, and (5) compressive strength of ... General information of bamboo and tallow ………52 Table 4-2 Fiber size distribution of bamboo and tallow wood fibers ……… …55 Table 4-3 Physical and mechanical properties of bamboo and tallow fiberboards

Ngày tải lên: 22/02/2014, 09:20

... 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 Glu68 and Glu77 are structurally ... catalyze the hydrolysis of chitin, a carbohydrate polymer of 1,4-b-linked GlcNAc Chitin is found in the cuticle of insect shells, in shells of crustaceans, and in the cell walls of many fungi, making ... Structure of chitinase G (ChiG) and comparison with the barley chitinase (A) Cartoon showing the overall fold of ChiG with transparent surface The side chains of the catalytic residues, Glu68 and Glu77

Ngày tải lên: 07/03/2014, 11:20

... Søren Andersen and Professor Peter Roepstorff (University of Southern Denmark, Odense) for recording the presented MALDI-TOF ⁄ TOF spectrum, and Tove Olafsen and Anna M Wu (University of ... Buus 2 and Inger Sandlie 1 1 Department of Molecular Biosciences and Centre for Immune Regulation, University of Oslo, Norway 2 Institute of Medical Microbiology and Immunology, University of Copenhagen, ... half-life of Fig. 4. Analysis of b2m and hFcRn HCs by MALDI-TOF MS prior to reduction of disulfide bonds (aliquot 1). Spectra were recorded after iodoacetamide treatment and tryptic digestion of gel-separated

Ngày tải lên: 16/03/2014, 06:20

... 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 ... databases The strength of the electrostatic interaction between S and C depends on the magnitude and relative orientation of the local fields of S and C and the dielectric properties and distances through ... PREDICTION OF CHEMICAL REACTIVITY PARAMETERS AND PHYSICAL PROPERTIES OF ORGANIC COMPOUNDS FROM MOLECULAR STRUCTURE USING SPARC National Exposure Research Laboratory Office of Research and Development

Ngày tải lên: 22/03/2014, 14:20

... adaptability of HSA involves more than the immediate vicinity of the binding site(s), affecting both the structure and the ligand-binding properties of the whole HSA molecule, which displays ligand-dependent ... 1,2). Table 3 Values of the equilibrium dissociation constants (Kd, M ) for Fe(III)heme binding to tHSA and HSA in the absence and presence of ibuprofen and warfarin, at pH 7.0 and 25 C. a From ... ibuprofen–(t)HSA], and N is the number of equivalent binding sites (N = 1 for both tHSA and HSA for each of the three ligands considered) Acknowledgements We gratefully acknowledge S Aime and

Ngày tải lên: 23/03/2014, 04:21

... immunoreactivities of ChAT, VAChT, and m2 Red: m2, ChAT, and VAChT, respectively Blue: DAPI Bar: 20 lm HEK293 cells expressed mRNAs of cholinergic receptors, including m1, m2, and m5, as well as a3 and a4 ... ending of the vagus was reported to be the only source of ACh, we now pre-sume that the ischemic cardiomyocyte is another possi-ble source of ACh To test our hypothesis and clarify a molecular and ... intracellular concentrations and loca-tions of ACh Third, we examined the effects of donepezil on the intracellular ACh production path-ways and the intracellular levels of ACh Finally, we evaluated

Ngày tải lên: 23/03/2014, 05:22

... study of polymers III Technique of mechanical tests of vulcanizates of rubber and plastics Rubber Chem Tech., 13, 904–917 Haward, R.N (1942) Extension and rupture of cellulose acetate and celluloid ... in the range of temperatures and strain rates of interest A linear dependence of yield stress as a function of log strain rate can be observed over a large interval of strain rates and temperatures, ... response to a constant rate of deformation, while the blue line is the response to a constant stress Mechanical properties of solid polymers Constitutive modelling of long and short term behaviour...

Ngày tải lên: 09/03/2014, 00:20

... of the structural and functional properties of the native proteins and thus may offer a useful basis for the design of agents for therapeutic intervention [7] Studies of different fragments and ... Therefore, the objectives of this study were to analyze (a) the effect of KL4 on the physical properties of membranes, in the absence and presence of Ca2+, using fluorescence anisotropy of 1,6-diphenyl-1,3,5-hexatriene ... ordering effect of SP-B and related peptides on the polar surface of DPPC ⁄ PG vesicles [23,24] Thermotropic properties of KL4-containing membranes Next, we used the nonperturbing technique of DSC to...

Ngày tải lên: 30/03/2014, 11:20

... inside wall and 3D structures of the inner wall were obtained using MeX software Figures and 10 show an FIB-milled pipette and stereo images Table shows inner surface properties of small b m ... and average surface roughness (Sa) of all pipettes have been measured Figures 3, 4, 5, and show correlations between pulling parameters and Dt and Sa As it can be seen from Figures 3, 4, 5, and ... significantly decreases Dt and Sa The effects of pull and heat are very similar and not as significant as the effect of velocity Delay and pressure are factors to change the taper length of the pipettes...

Ngày tải lên: 21/06/2014, 03:20

... MWCNT in case of former and with wt% in case of the latter Electrical Properties Fig SEM images of a raw, b acid modified-MWCNTs and c amide-MWCNTs As in the case of TS, the YM of the amide-MWCNTs/ ... Electron Microscopy The surface morphology of the as-produced, functionalized MWCNTs and the fractured surface of the nanocomposites 123 Figure shows the FTIR spectra of acid and amino functionalized ... duration and prolonged use between 200 and 350 °C without much deterioration in mechanical and other properties Polyimides are produced by the condensation reaction of an aromatic dianhydride and...

Ngày tải lên: 22/06/2014, 01:20

... thermal properties of green polymers such as natural polymers and polymers derived from saccharides and lignins The above green polymers include polymers such as poly(ε-caprolactone) (PCL) and polyurethane ... Overview of Green Polymers Molecular Level Morphology of Important Green Polymers: Cellulose and Lignin 3 Raw Materials for Synthetic Green Polymers: Molasses and Lignin Scope of ... lignin and green polymers by thermal and mechanical analyses, spectroscopy, and x-ray diffractometry Synthesis of green polymers derived from saccharides and lignins, such as polyurethane and polycaprolactone...

Ngày tải lên: 27/06/2014, 15:20

... Overview of Green Polymers Molecular Level Morphology of Important Green Polymers: Cellulose and Lignin 3 Raw Materials for Synthetic Green Polymers: Molasses and Lignin Scope of ... Topics in Thermal Analysis and Calorimetry Volume Series Editor: Judit Simon, Budapest University of Technology and Economics, Hungary Thermal Properties of Green Polymers and Biocomposites by Tatsuko ... the properties, especially thermal properties, of green polymers and to extend their practical applications Hence, the first half of this book is devoted to our results on fundamental research and...

Ngày tải lên: 11/08/2014, 06:20

... structure of natural cellulose and the structure of water vary as a Thermal Properties of Cellulose and Its Derivatives 65 function of Wc, Cp water and Cp cellulose changes as a function of Wc Accordingly, ... hydrophylicity of polymers In the case of cellulose, the numbers of hydroxyl group in the amorphous region, defects of crystallite and the surface of crystallite affect the Wnf When Wc in the polymers ... Figure 2-20) of the OH band at 3360 cm-1 and OD band at 2530 cm-1 were calculated using the band of 2900 cm-1 (CH and CH2 stretching) as an internal standard Using an internal standard, differences...

Ngày tải lên: 11/08/2014, 06:20