Materials Literature
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The nucleation of diopside and anorthite is always delayed under supercooled conditions. The delay in nucleation decreases with increasing degree of supercooling or increasing cooling rate. With further increase in the degree of supercooling or the cooling rate, the delay in anorthite nucleation increases. For a given…
The polypeptide chain of the allosteric L-lactate dehydrogenase (EC 1.1.1.27) of Lactobacillus casei consists of 325 amino acid residues. Despite the strikingly different enzymatic characteristics of the allosteric L-lactate dehydrogenase of L. casei and of the non-allosteric vertebrate enzymes, the sequence of the al…
Abstract As in the two‐dimensional case, the density change due to crystallization leads to a buildup of internal strain in some regions of a polymer melt occluded by growing spherulites. The occluded parts of the sample are called “weak spots.” Computer simulation of spherulite growth in bulk samples shows that the l…
Negatively stained sarcoplasmic reticulum from the scallop Placopecten magellanicus presented a variety of crystalline forms, the most common being tubular structures. These were characterized by paired rows of morphological units, spaced at approximately 120 A, running diagonally across the tubules. The orthogonal un…
The crystal structure of the title compound, [CO(C15H11N3)2](ClO4)2.c. 1.3H2O has been determined by single crystal X-ray diffraction methods at 295 K. The structure is described in terms of atetragonal P 42/ n sub-lattice structure similar to that of [Co(terpy)2]I2.2H2O, with a 8.86(1), c 20.19(2) Å. Perchlorate orie…
Abstract The condensation polymerizations of bis(4‐flurophenyl) sulfone with the bistrimethylsilyl derivates of bisphenol‐A, 4,4′‐dihydroxydiphenyl sulfone, 1,5′‐dihydroxynaphthalene, 3‐hydroxybenzoic acid, and 4‐hydroxybenzoic acid were investigated. These polycondensations were only successful when potassium or cesi…
Density measurements of aqueous solutions of ethanol, t-butanol, and hydrazine in the temperature range from 50 °C down to nucleation are presented. From these data, solute partial molar volumes and temperatures of maximum density are determined. The partial molar volumes of the alcohol solutions at low concentration…
Abstract FT‐IR spectroscopic studies have been performed in an attempt to elucidate the nature of the specific interactions occurring in miscible poly(ϵ‐caprolactone) (PCL)‐poly (vinyl chloride) (PVC) blends. Studies of low molecular weight analogues, polymer/solvent mixtures and blends of PCL and α‐deuterated PVC are…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFire- and heat-resistant laminating resins based on maleimido-substituted aromatic cyclotriphosphazenesDevendra Kumar, George M. Fohlen, and John A. ParkerCite this: Macromolecules 1983, 16, 8, 1250–1257Publication Date (Print):August 1, 1983Publication History Published onl…
The aim of this work is the study of the order-disorder distribution of the Fe3+ cations in a dioctahedral smectite: the Garfield nontronite. The structural characteristics have been determined by selected-area electron diffraction, oblique texture electron diffraction and X-ray diffraction. These methods lead to the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInteraction of (phthalocyaninato)iron(II) with molecular oxygen: synthesis and characterization of two different crystalline forms of (.mu.-oxo)bis[(phthalocyaninato)iron(III)]C. Ercolani, M. Gardini, F. Monacelli, G. Pennesi, and G. RossiCite this: Inorg. Chem. 1983, 22, 18…
Relative enthalpy, and heat capacities of CaMgSi 2 O 6 (Di) stable liquid and glass; of KAlSi 3 O 8 (Sa) stable and supercooled liquid and glass; of NaAlSi 3 O 8 (Ab) liquid derived directly by melting solid albite; of crystalline, disordered albite itself; and of NaAlSiO 4 (Ne) liquid and glass. The effect of anneali…
La${\mathrm{Ir}}_{2}$${\mathrm{Si}}_{2}$ has a high-temperature form crystallizing in the primitive tetragonal Ca${\mathrm{Be}}_{2}$${\mathrm{Ge}}_{2}$-type structure (space group $\frac{P4}{\mathrm{nmm}}$; $a=4.191$ \AA{}, $c=9.944$ \AA{}), and a low-temperature form of the body-centered tetragonal Th${\mathrm{Cr}}_{…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEXAFS structure and magnetic properties of a CuIINiII .mu.-oxalato mixed linear chainMichel Verdaguer, Miguel Julve, Alain Michalowicz, and Olivier KahnCite this: Inorg. Chem. 1983, 22, 18, 2624–2629Publication Date (Print):August 1, 1983Publication History Published online1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermotropic polyesters. 2. Investigation of the mesophase properties of polymers based on 4,4'-dihydroxybiphenylW. R. Krigbaum, J. Watanabe, and T. IshikawaCite this: Macromolecules 1983, 16, 8, 1271–1279Publication Date (Print):August 1, 1983Publication History Published o…
▪ Abstract The phase-field method has recently emerged as a powerful computational approach to modeling and predicting mesoscale morphological and microstructure evolution in materials. It describes a microstructure using a set of conserved and ...Read More
Abstract The situation of the general theory of plasticization is discussed. It is shown that the existing theories satisfactorily describe only particular cases, therefore exhibiting limited predicting capability. If the polymer and plasticizer compatibility is being evaluated unambiguously within the scope of the th…
Single crystals of tetramethylammonium tetrabromomanganate {N(CH 3 ) 4 } 2 -MnBr 4 were grown, and the phase transition was studied by dielectric measurements. The crystal shows a phase transition at 3.5°C. The transition temperature increases linearly with increasing hydrostatic pressure with a slope of 0.185 deg MPa…
The term trapping is used extensively to refer to the fact that interstitial atoms often find interstices associated with lattice imperfections to be energetically preferable to normal sites. This preference results in a delay of diffusion of interstitial atoms near these sites. As understanding of the details of latt…
M S El-Samaligy, P Rohdewald; Reconstituted collagen nanoparticles, a novel drug carrier delivery system, Journal of Pharmacy and Pharmacology, Volume 35, Issue