structure morphology and crystallization behavior of syndiotactic polystyrene

... Trang 1Linear recurrences and asymptotic behavior ofexponential sums of symmetric boolean functions Francis N Castro Department of MathematicsUniversity of Puerto Rico, San Juan, PR 00931 ... papers and books discussing the properties of boolean functions(see [5], [9], [2] and [6]) The subject can be studied from the point of view of complexitytheory or from the algebraic point of view ... theasymptotic behavior of exponential sums of symmetric boolean functions The correlation between two Boolean functions of n inputs is defined as the number of times the functions agree minus the number of...

Ngày tải lên: 08/08/2014, 14:23

... rise to a rich variety of structures of phases in this system as functions of pressure and temperature The laxity of the structure is the important condition of existence of the glass state It ... properties of SiO2 and for the very low ability of forming crystalline of amorphous silica The behavior of various high pressure silica phases has been investigated by both theory and experiment ... publishing about crystallization process of amorphous SiO2 Therefore in this work, we focused on considering the structure transition and crystallization of amorphous SiO2 at 450 K and in pressure...

Ngày tải lên: 27/09/2020, 17:46

... between 70 and 90% They all were soluble in a variety of organic solvents such as chloroform and methanol, and also in water at temperatures between 20 ºC and 60 ºC depending on the length of the ... linear and containing an even number of carbon atoms ( ) ranging from 12 to 22 The primary purpose of Trang 4the work is to provide physicochemical knowledge on the structure and properties of this ... 2Crystalline Structure and Thermotropic Behavior of Alkyltrimethylphosphonium Amphiphiles Ana Gamarra, Lourdes Urpí, Antxon Martínez de Ilarduya and Sebastián Muñoz Guerra* ºC range of temperatures...

Ngày tải lên: 06/02/2023, 09:35

... kinetics of four important structures of polypropylene, i.e the α-, β-, γ- and mesomorphic... non-isothermal and isobaric crystallization and structure development of isotactic ... effect of thermal and pressure history on the isotropic and quiescent crystallization kinetics of four important crystalline structures of isotactic polypropylene, i.e the α-, β-, γ- and ... processing and is of major importance for the final properties of the product A method is presented to quantify the effect of thermal and pressure history on the isotropic and quiescent crystallization...

Ngày tải lên: 22/02/2014, 09:20

... classes of enzyme The crystal structure of XAIP has been determined at 2.0 A˚ resolution and refined to Rcryst and Rfree factors of 15.2% and 18.6%, respectively The polypeptide chain of XAIP ... surfaces of the protein Com-parison of the structure of XAIP with that of xylanase inhibitor protein-I, and docking studies, suggest that loops a3–b4 and a4–b5 may be involved in the binding of GH11 ... Tyr159–Pro160 and Trp253–Asp254 which are conserved in the structures of other members of the subgroup consisting of hev-amine [10], Con-B [11], narbonin [12] and XIP-I [9,13] Overall structure of XAIP...

Ngày tải lên: 29/03/2014, 09:20

... metal cations, and allosteric behavior of the peptidase Soo I Yang and Takuji Tanaka Department of Food and Bioproduct Sciences, College of Agriculture and Bioresources, University of Saskatchewan, ... relationships of proli-dase, hence providing a greater understanding of the characteristics of this peptidase, which would be of industrial use in the debittering of fermented foods Results and Discussion ... crystal structure of P furiosus prolidase and the sequence-based model of Lc lactis prolidase (Fig 5) indicated that the S1 sites are composed mainly of hydrophobic residues (Phe190, Leu193 and Ile308...

Ngày tải lên: 30/03/2014, 04:20

... synergistic effect of fullerene, WO3, and TiO2 Because of the least band gap of fullerene (1.6 to 1.9 eV), hole and electron pairs were generated and separated on the interface of fullerene easily ... molecule and, simultaneously, the holes in the VB of TiO2 can transfer directly to fullerene because both the conduction band (CB) and the valence band (VB) of WO3 were higher than the CB and VB of ... VB of TiO2and full-erene When the hole and electron pairs were also gen-erated and separated on the interface of WO3, electrons at the CB of WO3 migrated to CB of TiO2 and fuller-ene, and holes...

Ngày tải lên: 21/06/2014, 01:20

... uniqueness of solution of the Laplacian wave equation1.1-1.2 for n  1 To the best of our knowledge, there are few information on the uniqueness of solution of1.1-1.2 for n > 1 and p > ... estimate to assumed solutions The proof of asymptotic behavior of solution is given in Section 4 Trang 32 Assumptions and Main ResultsWe first give some notations and definitions LetΩ be a bounded ... the space L p and W01,p for L p Ω and W 1,p 0 Ω and relevant norms by · pand · 1,p, respectively In general, · Xdenotes the norm of Banach space X We also denote by ·, · and ·, · the...

Ngày tải lên: 21/06/2014, 07:20

... existence of global solutions for this problem is proved by constructing a stable set in W 1,p 0 Ω and show the asymptotic behavior of the global solutions through the use of an important lemma of ... E0. We conclude from 2.17 and 2.33 that lim t → ∞ u t t  0 and lim t → ∞ ∇ut p  0. The proof of Theorem 2.8 is thus finished. Journal of Inequalities and Applications 9 Acknowledgments ... Foundation of Henan Province no. 200711013, The Science and Research Project of Zhejiang Province Education Commission no. Y200803804, The Research Foundation of Zhejiang University of Science and...

Ngày tải lên: 21/06/2014, 18:20

... recently studied large-time behavior and quasineutrallimit of L ∞ solution of the Cauchy problem in [15] As far as we know, no resultsabout the global existence and large time behavior to (1.2) with ... Trang 5behavior of solutions of Cauchy problem to the bipolar model basing on the fact thatthe frictional damping will cause the nonlinear diffusive phenomena of hyperbolicwaves, while Huang and ... in [20] and using the idea of [16], we show the opti-mal algebraical decay rates of the total perturbed density ϕ1 + ϕ2, which together with the exponential decay rate of the difference of two...

Ngày tải lên: 21/06/2014, 20:20

... irrespective of the nature of surfactants. Aggregation Behavior of Surfactants in Presence of ZnS Nanoparticles The aggregation behavior of both the surfactants in the presence of respective ... Williamson-Hall plots of powder XRD data of ZnS nanoparticles prepared in (a) CTAC and (b) CPyC Table 1 Average crystallite sizes and amount of strain of ZnS nanoparticles calculated on the basis of powder ... presence of ZnS. However, the peaks due to –C–H stretching of hydro- carbon tail remained unaffected. The detailed assignment of FTIR peaks of CTAC and CPyC in the presence and absence of ZnS nanoparticles...

Ngày tải lên: 22/06/2014, 00:20

... Effect of Blowing Agent Concentration on Cell Morphology and Impact Properties of Natural Rubber Foam N.N Najib1*, Z.M Ariff1, N.A Manan1, A.A Bakar1 and C.S Sipaut2 1 School of Material and Mineral ... evaluate its effect on the morphology and impact properties of natural rubber foam The expandable rubber samples were prepared using a conventional two-roll mill and were then expanded via a heat transfer ... density of toluene, ρr = density of the raw rubber, = mass fraction of toluene, which can be obtained from Equation (4), and = weight of the rubber, given by Equation (5) s X r X = s W eight of Swollen...

Ngày tải lên: 07/08/2014, 14:20

... powerful and fundamental driver of human behavior, thought, and emotion [22] A number of thoughts on risk and the perception of risk are provided by a variety of authors [22–29] Splashy and Dreadful ... energy and support this second edition would not have happened The professional proofreading skills of my daughter Laura Sanders and her husband Morgan Grether have be instrumental in adding life and ... industries due to the nature of toxic and flammable liquids and gases [12] Naturally, the handling and storage of hazardous materials presented a potential peril that was often far greater than those...

Ngày tải lên: 02/04/2014, 16:30

... Influence of the operating temperature of the ring liquid on suction capacity and suction pressure of the pump 178 Operating behavior at different densities of the operating liquid 180 Influence of ... the viscosity of the operating liquid on the discharge behavior of the pump 182 Solubility of gases in the operating liquid 183 The quantity of operating liquid 184 The behavior of liquid ring ... standards for rotating machines 232 Characteristics and fields of applications of liquid ring vacuum pumps and compressors 234 Vacuum and Compressor Plants with Liquid Ring Machines 239 Demands...

Ngày tải lên: 02/04/2014, 15:36

... energy and, fuel injection and alternative fuels Leslie R Pagliari is an Associate Professor in the Department of Technology Systems and Associate Dean of Academic Affairs at the College of Technology ... values 1, 2, and for small, medium and large homes respectively Number of occupants represents the total number of persons that live in the house Number of stories takes values 1, and House orientation ... 140 and 205 m2) and large size (more than 205 m2) As shown in Figure 2, the percentages of the house sizes in the test group are 54%, 40%, and % for large, medium and small homes respectively and...

Ngày tải lên: 05/09/2013, 16:10

... function of the thickness of the casing and the tolerances, and the strength of the pump components As the pump performs its duty over time, and fluid passes through the pump, erosion and abrasive ... role in the pump’s flow and pressure, like the number, pitch, and thickness of the impeller blades, the internal clearances, and the presence and condition of the wear bands In simple terms, we ... and Given the following information: sp gr of water = 1.0 sp gr of gasoline = 0.70 sp gr of concentrated sulfuric acid = 2.00 sp.gr of sea water = 1.03 A pump capable of generating 125 feet of...

Ngày tải lên: 05/03/2014, 17:20

... sites and ligands, respectively, and [EL] is the concentration of bound ligand The total concentration of sites can be expressed as N[E]0, the product of total protein concentration ([E]0) and ... effects of Ca21 and ATP dependence of Ca21 ATPase activity by curcumin (A) Ca2þ-ATPase activity was measured as a function of [Ca2þ]free in the absence (B) and presence of 10 mM (W) and 25 mM ... suspension of reconstituted lipid vesicles The dye filled vesicles were diluted in 1.8 mL of Hepes buffer and fluorescence intensity was measured at excitation and emission wavelengths of 490 nm and 520...

Ngày tải lên: 08/03/2014, 23:20

... chemically cleaved and the fragments analysed by MALDI-TOF MS This enabled precise identification of the fragments labelled by drug and enabled relative quantitation of the amount of drug bound Resistant ... approaches in the analysis of ABCB1 are currently based on non-ABCB1 structures and therefore a degree of caution is prudent [33–36] Two principle structures are employed, namely MsbA and Sav186, but unfortunately ... reconciled into a map of the sites? Where we stand on the issue of the location of drug-binding sites on ABCB1? There is clearly a wealth of information implicating several regions of the protein (Fig...

Ngày tải lên: 22/03/2014, 21:20

... analyses of cross-linking data and ligand docking, chiefly because of the NBD–TMD reverse domain order, the lack of conserved structural motifs ICD2 and ICD3, and shorter TMD helices and low sequence ... regard to a structural understanding of multidrug binding The structure is comparable in terms of the fold and the domain–domain interactions to the structures of MsbA and Sav1866 Furthermore, a ... whereas ABCB1 and ABCC1 comprise a single polypeptide A crystallization of the recent history of ABC exporters: when seeing is believing A brief account of the complete structures of ABC exporters...

Ngày tải lên: 22/03/2014, 21:20

... reducing both the affinity of Ca2+ binding and phosphoryl transfer and postulate that the drug binds to and interferes with the Ca2+ entry pathway of the Ca2+-ATPase MATERIALS AND METHODS 2-Aminoethoxydiphenylborate ... stimulatory phase of 0.40 ± 0.03 lM, and the Km for the inhibitory phase of 0.35 ± 0.06 mM However, in the presence of 2-APB (800 lM), the Vmax was reduced to 5.9 ± 0.2 UÆmg)1, and stimulatory and inhibitory ... of the fluorescent dye by Co2+ ions (15 lM) Upon addition of 2-APB, the rate of quenching is substantially increased and dependent upon the concentration of 2-APB The trace is representative of...

Ngày tải lên: 31/03/2014, 23:20