temperature dependence of degree of polymerization

... function of temperature in the course of duplex melting can be given by [22,39,4447]: ATị ẳ aị Ahelix Tị ỵ a Acoil Tị 2ị where A(T) is the absorbance of a solution at the temperature of interest ... (C) ể FEBS 2002 Temperature dependence of thermodynamic properties (Eur J Biochem 269) 2825 2826 P Wu et al (Eur J Biochem 269) Fig The representative temperature dependence of the thermodynamic ... ể FEBS 2002 Temperature dependence of thermodynamic properties (Eur J Biochem 269) 2829 18 Walter, A.E & Turner, D.H (1994) Sequence dependence of stability for coaxial stacking of RNA helixes...

Ngày tải lên: 22/02/2014, 07:20

... diameter of as-grown SiNWs are different in different growth temperature zones In zone A (1080–1120 °C), the nanowires had a uniform diameter of about 35 nm The presence of nanoparticles at the tips of ... mechanism of the silicon nanoparticle chains They proposed that nucleation and growth occurring alternatively resulted in the formation of chains of silicon nanoparticles The formation of the kinks of ... The other, the rest of the branch, was a complete amorphous silicon oxide Fig is the HRTEM image of the interface (arrow in Fig 1d) of two kinds of structures along the axis of the branch It can...

Ngày tải lên: 16/03/2014, 15:09

... temperature for the rate of silane decomposition Conversely, the rate of diffusion is typically a less pronounced variation with temperature (i.e., square root) At low temperatures, the rate of ... band shift by heating and the asymmetry of the band are fingerprints of Si nanowires To explain the strong dependence of the Si nanowire yield and reaction temperature reported in this work, one ... eutectic point at relatively low temperatures and Si concentrations The eutectic of a Si–Au mixture is determined by the composition of X% SI Y% Au and temperature of 363 °C It is expected that...

Ngày tải lên: 16/03/2014, 15:09

... image of the Se nanowires b Raman spectrum of the Se nanowires corresponding to trigonal Se structure c PL spectrum of the Se nanowires showing 1.76 eV (706 nm) band-gap of trigonal Se d SEM of ... 5:926–929 The light intensity dependence of photocurrent suggests that the Se nanowire photoconductivity is dominated by trap states at low temperatures, while a weak dependence of photocurrent on incident ... recombination Fitting the power law dependence to the experimental data gives a = 0.64, 0.49, and 0.07 at temperatures of 10, 200, and 300 K, respectively The power law dependence can be further analyzed...

Ngày tải lên: 21/06/2014, 18:20

... 350 400 450 500 Temperature (K) Figure 5: Temperature dependence of line-width of LO phonon Temperature Dependence of Raman Spectra 56 Table 3: Parameters used for temperature dependence on crystalline ... Temperature Dependence of Raman Spectra 3.2.1 εm Crystalline and nanocrystalline GaP Theoretical calculations were performed for the temperature dependence of the line-center and line-width of ... studies Temperature Dependence of Raman Spectra 52 Figure 2: Schematic diagram of LIE process RESULTS AND DISCUSSION 3.1 Raman Spectrum of Porous GaP The Raman spectrum of porous GaP sample...

Ngày tải lên: 07/08/2014, 14:20

... distribution of precipitated 216 S Cheylan et al / Journal of Luminescence 80 (1999) 213—216 Fig compares the peak of the emission spectrum for single and multi-energy implants as a function of total ... silica plates, mm thick, were implanted with Si ions at room temperature One set of samples was implanted with 400 keV Si ions to doses of 0.6, 1.0, 2.0, 3.0, 4.0 and 6.0;10 Si cm\, whilst a ... were performed at room temperature using  PROFILE is a commercially available code for calculating high-dose implant profiles Fig Implant profiles calculated using the PROFILE code for a single...

Ngày tải lên: 16/03/2014, 15:26

... resistance of the nanocomposite sensors prepared via polymerization at room temperature (25 ◦ C) and 10 ◦ C Fig Response of the sensor prepared via polymerization at 10 ◦ C to NH3 of different ... 30 days Therefore, the lack of long-term stability of the fabricated sensor was of concern The resistance changes of the sensors prepared via polymerization at room temperature and 10 ◦ C are ... [10], and then the temperature dependence of response was studied here The response to 23 ppm NH3 of the sensor based on the thin film fabricated at 10 ◦ C is shown as a function of temperature in...

Ngày tải lên: 20/03/2014, 13:04

... resistance of the nanocomposite sensors prepared via polymerization at room temperature (25 ◦ C) and 10 ◦ C Fig Response of the sensor prepared via polymerization at 10 ◦ C to NH3 of different ... 30 days Therefore, the lack of long-term stability of the fabricated sensor was of concern The resistance changes of the sensors prepared via polymerization at room temperature and 10 ◦ C are ... [10], and then the temperature dependence of response was studied here The response to 23 ppm NH3 of the sensor based on the thin film fabricated at 10 ◦ C is shown as a function of temperature in...

Ngày tải lên: 20/03/2014, 13:04

... Scattering) Fig Dependence of α on T (Electron- acoustic Phonon Scattering) Figure shows the dependence of the nonlinear absorption coefficient of a strong EMW on the temperature T of the system ... temperature T of the system The dependence of the nonlinear absorption coefficient of a strong EMW in a WQW on the temperature T of the system In our model, we consider a wire of GaAs with rectangular ... Journal of Science, Mathematics - Physics 26 (2010) 115-120 show the dependence of the nonlinear absorption coefficient of a strong EMW by confined electrons in RQW on the temperature T of the...

Ngày tải lên: 22/03/2014, 11:20

... time of h 38 In the main, the presence of a-crystallin significantly decreased formation of this large aggregate As a result of the interaction of a-crystallin with reduced j-casein, a complex of ... of this process This suggests that the temperature- dependent inhibition of j-casein fibrillation by a-crystallin is a function of both ‘activating’ the chaperone ability of a-crystallin, and of ... binding of TFT by proteins or the efficiency of fluorescence are temperature dependent For this reason, the time course of TFT fluorescence upon interaction with j-casein may reflect other temperature- dependent...

Ngày tải lên: 30/03/2014, 04:20

... Lopez LA, Bertini F The in vivo effect of low body temperatures on the degree of polymerization of tubulin in brain and testes: a comparison among some species of vertebrates Comp Biochem Physiol ... which was mostly differentiated Assessment of chromosomal normality of hESC after exposure to low temperature The chromosomes of hESC upon exposure to low temperature (25oC and 4oC for 24 h and 48 ... majority of hESC survived exposure to low temperature for extended durations Spontaneous differentiation of hESC after exposure to low temperature Following serial passage after exposure to low temperature, ...

Ngày tải lên: 31/10/2012, 16:57

... this paper, we develop a controller for temperature control inside a room within a desired band of temperatures for comfort The details of the geometry of the room and the HVAC system based on ... dimensions of the room are 12 ft x 12 ft x 9.5 ft with a surface are of 804 ft² and volume of 1368 ft3.The inlet vents on floor of the room are 6"×9" in cross-section, which gives an area of 2.25ft² ... was created to simulate the temperature of the exterior wall of the room This temperature curve simulated the exterior surface and was assumed to be at a constant value of 320K A 3-D Cartesian mesh...

Ngày tải lên: 05/09/2013, 16:11

... excess of kinetic energy (as a measure of temperature) and its effect on enzyme activity Alternatively, we know of a number of examples of qualitative strategies, for example, when expression of ... b-subunits of protein kinase CK2 [14,15], F0F1-ATPase [16], etc Temperature- dependent gene expression of these enzymes may result from: (a) the temperaturedependent expression profile of transcription ... denaturation temperature (Td) of ‘cold’ and ‘warm’ enzymes was the same, the specific heat capacity (Cp) was higher in ‘cold’ LDH-A [21] This indicates a higher degree of freedom of the native...

Ngày tải lên: 19/02/2014, 02:20

... compounds of interest in the prevention of colon cancer In the present study, we investigated the relationship of different structural factors of procyanidins, such as the mean degree of polymerization ... properties of natural extracts D Lizarraga et al Table Comparative chemical characteristics and HT29 cell growth inhibition of grape and pine fractions Percentage of galloylation (%G), mean degree of polymerization ... an equivalent degree of polymerization but also with a percentage of galloylation ‡ 15% (VIIIG, IVG, VIG and OWG) produced IC50 and IC80 values that were approximately half those of the homologous...

Ngày tải lên: 07/03/2014, 05:20

... pH dependence of the steady-state kinetic parameters of MAO A-catalysed oxidation of benzylamine at 20 °C Fig S2 pH dependence of the reductive half-reaction of MAO A-catalysed oxidation of benzylamine ... effects and their pH dependence in MAO A pH pH Fig (A, B) pH dependence of the steadystate kinetic parameters of MAO A-catalysed oxidation of kynuramine at 20 °C (C, D) pH dependence of the reductive ... pH dependence in MAO A R V Dunn et al Fig S5 Substrate dependence of the reductive halfreaction of MAO A-catalysed oxidation of PEA at pH 8.5 and 20 °C This material is available as part of the...

Ngày tải lên: 07/03/2014, 06:20

... characterized by IC50s of 10.7 lm and 81.4 lm for inhibition of OmcA and OmcB, respectively Modes of inhibition of either OmcA or OmcB by V(V) The modes of inhibition of either OmcA- or OmcBdependent ... constructed omcA, omcB and omcA ⁄ omcB insertion mutants of MR-1, and analyzed them in terms of dissimilatory reduction of a variety of metals, i.e Fe(III), V(V), U(VI), and Se(VI) A ‘whole cell’ ... experiment; those of MR-1R grown on the different metals are shown in Fig 1B, whereas the increases in density at day of MR-1R and of all mutants are summarized in Fig 1A For chelated forms of Fe(III)...

Ngày tải lên: 07/03/2014, 09:20

... r>1 r >> probability of formation of new active centers probability of loss of active centers 3757 Branched chain mechanism of polymerization I V Baskakov The nucleation -polymerization model ... volume or the shape of reaction vessel, the presence of a lag-phase, threshold effects and a strong dependence of the reaction rate on microimpurities observed for this type of reactions raised ... chain mechanism of polymerization consistent with the mechanism of branched-chain reactions Employing the theory of branched-chain reactions will greatly benefit our understanding of the prion replication...

Ngày tải lên: 07/03/2014, 10:20

... event at the temperature below )10 °C Reversibility of low temperature inactivation of CPY under high pressure Time-dependent recovery of CPY activity was observed after the release of pressure ... quantitative analysis of the secondary structure according to the method of Yang et al [21] an approximately 50% loss of the helical structure was estimated Combined effects of low temperature and ... the degree of enzymic inactivation between the two conditions, the idea of ice formation being a contributing factor for the cold inactivation of CPY was eliminated Circular dichroism analysis of...

Ngày tải lên: 08/03/2014, 10:20

... for h in open air, resulting in formation of arrays of LSCO nanotubes in the inside of the pores of the AAO template 2.4 Characterization The morphologies of the LSCO nanowires were characterized ... fields of interest are nanomaterials Guojia Fang received his PhD in physics at Huazhong University of Science and Technology in China (2000) and presently is a professor in Department of Physics of ... fields of interest are nanomaterials Xing-Zhong Zhao received his PhD in physics at University of Science and Technology of Beijing in China (1989) and presently is a professor in Department of Physics...

Ngày tải lên: 20/03/2014, 13:04

... Dependence of the K1 on nD Fig shows the parametric transformation coefficient K1 as a function of concentration of impurities nD It is seen that the parametric transformation coefficient of ... semiconductors, we, in the paper, examine dependence of the parametric transformation coefficient of acoustic and optical phonons in doped superlattices on concentration of impurities Model and quantum ... and en are the energy levels of an individual well In order to establish a set of quantum kinetic equations for acoustic and optical phonons, we use equation of motion of statistical average value...

Ngày tải lên: 22/03/2014, 11:20