Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReversible oxidation and rereduction of entire thin films of transition-metal phthalocyaninesJ. Mark Green and Larry R. FaulknerCite this: J. Am. Chem. Soc. 1983, 105, 10, 2950–2955Publication Date (Print):May 1, 1983Publication History Published online1 May 2002Published in…
Valence effective Hamiltonian (VEH) calculations are performed on a number of sulfur containing organic conjugated polymers of interest to the conducting polymers area. Theoretical results for parameters related to conductivity such as ionization potentials, bandwidths, and bandgaps are presented. Systems considered i…
The structure of ribonuclease A has been refined jointly with the neutron and X-ray data extending to 2.0 A. The results of an earlier X-ray refinement provided the starting model [Wlodawer, A., Bott, R., & Sjölin, L. (1982) J. Biol. Chem. 257, 1325-1332]. The final R factors were 0.159 (X-ray) and 0.183 (neutron) for…
Protein C activation is catalyzed by a complex between thrombin and an endothelial cell surface receptor, thrombomodulin.To investigate the function of the y-carboxyglutamic acid (Gla) residues in the calciumdependent activation of protein C, residues 1-41 were removed from the protein C light chain by selective prote…
关于钾芒硝(Glaserite)的组成和性质,曾有过许多研究,但一直存在着争论. 五十年代以来,各研究者的分歧仍然很大,Frondel给出钾芒硝的化学式为(K,Na)_3Na(SO_4)_2,Winckell认为钾芒硝是一种复盐而不是固溶体,等在研究55℃K_2SO_4-Na_2SO_4-H_2O三元体系时,认为存在着一种富含K_2SO_4的新相,摩尔比K∶Na达3.20—3.60. 等研究75℃上述三元系时,也做出了摩尔比高达3.73的固相,等研究100℃的三元系时,认为存在着固定组成为K_3Na(SO_4)_2的结晶区,同时还有K_3Na(SO_4)_2和Na_2SO_4单方向的固溶体. 总之,没有做出最终的结论.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMethyl-substituted tribenzo[b,f,j][1,5,9]triazacycloduodecine with copper(II) ion: a dynamic Jahn-Teller effectRobert I. Sheldon, Alan J. Jircitano, Mark A. Beno, Jack M. Williams, and Kristin Bowman MertesCite this: J. Am. Chem. Soc. 1983, 105, 10, 3028–3031Publication Date…
The clays of Eastern Canada, and in particular the Saint-Jean-Vianney clay in the Saguenay region, have often been described as clays with a preconsolidation due partly to cementation. In order to check this assumption, the geological history and the geomorphology of the Saguenay region have been analyzed. Further to…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFirst example of a discrete copper(III, II) mixed-valence complex: the triangular CuIIICuII2O core circumscribed by oxime ligandsDipankar Datta and Animesh ChakravortyCite this: Inorg. Chem. 1983, 22, 11, 1611–1613Publication Date (Print):May 1, 1983Publication History Publi…
The thermal decomposition and the glass transition temperature Tg of poly(phenyl methacrylate) (PPhMA) and poly(cyclohexyl methacrylate) (PcHU) were studied with a differential scanning calorimeter (DSC). The undecomposed and decomposed polymers were analyzed by gel permeation chromatography (GPC) for molecular weight…
The condensation of organoantimony(V) dihalides with diamines forming antimony(V) polyamines employing the interfacial technique is described. Structural characterization was accomplished by employing elemental analysis, light-scattering photometry, infrared spectroscopy, control reactions, and mass spectroscopy. The…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEsterification reaction of poly[(chloromethyl)styrene] with salts of carboxylic acid using phase-transfer catalystsTadatomi Nishikubo, T. Iizawa, K. Kobayashi, Y. Masuda, and M. OkawaraCite this: Macromolecules 1983, 16, 5, 722–727Publication Date (Print):May 1, 1983Publicat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnion ordering in mixed valence dicesium hexachloroantimonate (Cs2SbCl6) and related saltsKosmos Prassides, Peter Day, and Anthony K. CheethamCite this: J. Am. Chem. Soc. 1983, 105, 10, 3366–3368Publication Date (Print):May 1, 1983Publication History Published online1 May 20…
ABSTRACT Bovine skin corium obtained from freshly slaughtered cattle of increasing biological age showed greater resistance to the action of acids, as measured by extractable collagen. Citrate‐soluble content of corium from fetal skin was 30.9%, while that of 3 to 6‐wk old calf was 6.4% and of 18‐month steer was 3.2%.…
New anthraquinone dyes have been developed with high-order parameters and solubilities in both positive and negative dielectric anisotropy liquid-crystal hosts. The dyes show high stability and allow the formulation of black mixtures which show good contrast in a range of display devices.
Fission product yields for 24 masses were determined for the fission of $^{239}\mathrm{Pu}$ with essentially monoenergetic neutrons of 0.17, 1.0, 2.0, 3.4, 4.5, 6.1, and 7.9 MeV. Fission product activities were measured by Ge(Li) $\ensuremath{\gamma}$-ray spectrometry of irradiated $^{239}\mathrm{Pu}$ targets and by c…
Multiple regression analysis was used to determine whether certain deformation properties (stiffness, shear, extensibility) and structural characteristics (fabric weight, thickness, and density) serve as reliable predictors of the drape of knitted fabrics. Stiffness, measured in terms of bending length, thickness, and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReduction of carbon monoxide by binuclear tantalum hydride complexesPatricia A. Belmonte, F. Geoffrey N. Cloke, and Richard R. SchrockCite this: J. Am. Chem. Soc. 1983, 105, 9, 2643–2650Publication Date (Print):May 1, 1983Publication History Published online1 May 2002Publish…
The sequence of the structural phase transitions of the layer compound (C 2 H 5 NH 3 ) 3 FeCl 4 has been determined with the ultrasonic, dielectric and polarized microscope measurements as following; Phase I ( D 4 h 17 )–(378.8 K)–Phase II ( D 2 h 18 )–(203.5 K)–Phase III–(133.7 K)–Phase IV. The set of the critical ex…
Abstract Cake staling, which is associated with changes in crumb firmness and moistness, has been shown to be related to two basic processes occurring in the crumb. These are an intrinsic firming process of the cell‐wall material of the crumb and the macroscopic migration of moisture from the central areas of the crum…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochromism of monolayers of poly(methylmethacrylate) having spirobenzopyran side groupsR. Vilanove, H. Hervet, H. Gruler, and F. RondelezCite this: Macromolecules 1983, 16, 5, 825–831Publication Date (Print):May 1, 1983Publication History Published online1 May 2002Publish…