PoIy dependence

Fig. 18. Effect of the volume fraction of water on the temperature dependence of the shear loss modulus of poIy(2-hydroxyethyl acrylate) 1 = 0.00 2 = 0.07 3 = 0.16 4 = 0.46...

Figure 26. The temperature dependence of the 360-MHz proton NMR spectra (4.5 to 9.0 ppm) of the daunomycin poIy(dA-dT) complex, Nuc/D =25, in /M NaCl, lOmM cacodylate, ImM EDTA, 2H.O, pH 6.5 between 69° and 88°C. The daunomycin resonances are designated by an asterisk.

Figure 39. The temperature dependence of the chemical shifts and linewidths of the base resonances of poIy(dA-dT) (O) and the Nuc/D = 50 netropsin poly-(dA-dT) complex ( J in 0.1 M cacodylate, 4.4mWl EDTA, 2HiO, pH 7.25...

Dawson, T. M., Dawson, V. L. (2002). Mediation of poiy(ADP-ribose) poiymerase-1-dependent ceii death by apoptosis-inducing factor. Science 297, 259-263. 

Relaxation times r obtained from experimental dispersion curves in Figs. 59-61 by using Eq. (81) can be compared with molecular weights M of the same polymer samples. The dependence of r on M for poIy(butyl isocyanate) is shown in Fig. 62. The experimental points fit a curve the slope of which decreases with increasing M from 2.7 to 1.5. Taking into account Eq. (82) this can be expressed by... 

Figure 3.12 (a) Storage compliance ot poIy(n-octyl methacrylate) versus frequency measured at 24 temperatures, given in degrees Celsius, (b) Master curve of J versus reduced frequency (Mj obtained from the data of (a) by time temperature shifting, fc) Temperature-dependence of the shift... 

Figure 3.12. Corrected fluorescence spectra of 4 29 SSB. Data were obtained at a fina concentration of 8 pM in bufTei- B at 2S C in the absence thick curves) and presence thin curves) of saturating amounts of ssDNA (300 pM poIy(dT). The excitation (21 - 308 nm) and emission spectra (A 276 nm) were corrected for background emission, inner filter effect of DNA absorption and wavelength dependence of the fluorimeter response. Source Soengas, M. S., Reyes Mateo, C Salas, M., Ulises Acuna, A and Gutidrrez, C 1997, J. Biol Chan. 272. 29S-302. Autborlnation of reprint accorded by the American Society for Biochemistiy and Molecular Biok). ...

Fig. 6.1. The temperature dependence of the (+) CFP of a poIy(oxyethylene) stabilized latex in 0-39 M MgSOi- Also shown ( ) are the corresponding 0-pressures (after Evans el a ., 1975).

Experimental evidence for elastic steric stabilization There is a paucity of experimental studies of elastic steric stabilization. Smitham and Napper (1976a,b) have shown that it is possible to prepare polystyrene latex particles stabilized by poIy(oxyethylene) and dispersed in molten poly(oxyethylene). These experiments suggested that the maximum particle size that could be elastically stabilized was dependent upon the molecular weight of the stabilizing moieties, as would be expected intuitively. Everett and Stageman (1978a) have also reported the elastic stabilization of poly(methyl methacrylate) particles stabilized by poly(dimethylsiloxane) in liquid poly(dimethylsiloxane). 

How is the dependence of permeabiiity on density in poiyethyiene, as iiius-trated in Tabie 4.4, reiated to the structure (chemicai or physicai) of the poiy-mer What is the singie factor most responsibie for the difference in barrier abiiity ... 

Figure 11. Dependence of the transition temperatures from the crystalline ( , O) and SmA ( , ) phases of syndiotactic [(tr) = 0.80] poIy /j-[4-(4 -methoxyphe-nyl)phenoxy]hexyl methacrylate] as a function of the number average degree of polymerization ( , ) and the inverse number average degree of polymerization (O, ) [44]. Infinite molecular weight transitions K 122 SmA 138 I.

TABLE 2 EF-Tu Dependent Polymerization of Phe-tRNA Directed by poIy(U) ... 

FIGURE 46.9. Temperature dependence of the resistivity for various heaviiy iodine doped poiy-acetyienes represented in a iog p versus iog Tscheme (from Ref. [70]). 

Polyadenosine diphosphate ribose poIy(ADP-ribose) polymerase catalyzes the incorporation of the ADP-ribose moiety of NAD into a homopolymer of repeating ADP-ribose units covalently bound to histones and other nuclear protein acceptors [1,2]. This DNA-dependent enzyme, highly stimulated by nicks and DNA fragmentation [3,4], is thought to be involved in several basic functions of the chromatin, especially in DNA repair [5-7]. 

Dependence of kp on virtual conversion, Xvinuai, for polymerizations of methacrylic acid in water at 25 °C and ambient pressure. The diamond symbois refer to poiymerization of MAA (20 wt.-%) in aqueous soiution without any added carbor iic acid groups (partiaiiy taken from ref. ). The squares and the triangies represent aqueous-phase poiymerizations of MAA in the presence of poiy(MAA) and IBA, respectively, at overall concentration of 20 wt.-% carboxyiic acid. The kp values indicated by the circles are taken from ref.. They refer to polymerization of MAA in aqueous soiution at concentrations below 20 wt.-% (for a more detailed explanation see text). The dotted line indicates the mean vaiue of iow conversion kp at 20 wt.-% MAA in aqueous soiution (this work and ref. ). 

Local concentration-dependent diffusion coefficient for CO2 in poIy(ethylene teiephthal-... 

Li et al. investigated the hydrogen bonds, their temperature dependence, and water—polymer interaction in hydrated poIy(acryHc acid) (PAA) using H combined rotation and multiple-pulse spectroscopy (CRAMPS) solid-state MAS NMR technique based on a continuous phase modulation... 

Stability of individual polymorphs of F6203 based on the calculated dependence of the free energy per volume (G/V) on the size (d) of the iron(iil) oxide nanoparticies of particuiar poiy-morph (the dependences derived under the conditions of rja[Pg.368]

Measurements of the frequency and temperature dependence of the H T, in poly(dimethyl siloxane) revealed relaxations due to methyl rotation and segmental motions and also an oxygen impurity effect The experimental data could not be fitted using thermally activated Arrhenius behaviour, as was also true of backbone motions in poly(vinyl chloride). " Multiple side-group motions have also been observed in poly (diethyl siloxane) and poly(L-histidine). Backbone motions have been observed in poiy(diethyl siloxane), poly(oxymethylene), poly(ethylene terephthalate), poly(p-phenylene sulphide), aromatic polyamides, and PTFE. A close similarity between the effects of entanglements and radiation cross-linking on the of cis-polyisoprene has been found. ... 

Figure 13 Composition dependence of the binary interaction parameters of deuterated poiystyrene/poiy(vinyi methyi ether) biends, vq denotes reference voiume. Adapted from Han, C. C. Bauer, B. J. Ciark, J. C. etal. PolymerMSS, 29, 2002. ...

Fatty acid diester of poIy(ethylene glycol). The enzymatic esterification was performed in bulk at 50-60°C under vacuum and completed in 8-48 hours. The enzyme use level was 0.1-0.5% based on the substrate. The acid numbers of the ester products depended on the enzyme type, the enzyme use level and the reaction temperature. Progress of each reaction was monitored by TLC analysis (eluted with EtOAc/Hex, 1 3 detected by the phosphomolybdic acid reagent), which showed the disappearance of fatty acid (Rf = 0.4) and the emergence of the PEG ester (Rf= 0-0.1). The enzyme was recovered by filtration. The product was obtained as a yellowish liquid and analyzed without further purification. All product structures were confirmed by and C-NMR analysis. 

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