Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
A study was made of the structural details of thin oxide films formed on the (100), (111), (110), and (311) of nickel. Oxidation temperatures ranged from 400° to 600°C, and the oxide films produced were between 25 and 500Aå thick. An x‐ray technique was utilized to measure the average strain in the films, the mosaic s…
The six-co-ordinated titanium(IV) compounds Ti(acac)2X2, where X = MeO, EtO, CF3CH2O, PriO, BunO, ButO, ½[OCH2CMe2CH2O], and Cl, have been studied in solution by infrared spectroscopy and variable-temperature n.m.r. All these compounds adopt the cis-configuration and undergo intramolecular rearrangement, and conventio…
Magnetic and structural studies on a pair of analogous copper(II) acetate and formate dimers suggest that metal-metal bonding is not important in explaining their antiferromagnetism.
Modest additions of sodium acetate, nitrate, iodide, or benzoate to MgCl 2 test solution boiling at 130°C are found to increase resistance to or inhibit stress corrosion cracking of 18‐8 stainless steel. The critical applied potential in MgCl 2 solution (−0.145v) above which, but not below, cracking occurs is shifted…
A new electric field controlled reflective optical storage effect has been discovered in mixed nematic-cholesteric liquid crystal systems. Ion motion produced by a dc electric field is used to emulsify the initially transparent mixture and give it a milky white appearance. This state remains after the dc signal is rem…
Abstract Polymer crystals are characterized by strong anisotropy of binding forces among units, i.e., the intrachain force constant f is much larger than the interchain force constant g . The anisotropic lattice is reduced to an isotropic one, in which each lattice point represents N * units (segment) along the chain…
The optical absorption in doped direct gap semiconductors in which the conduction band may be considered as a degenerate Fermi system is studied near the Burstein edge. The problem is treated within a simple model by the methods of perturbation theory taking into account the final-state interaction between conduction…
Abstract Modification of the carboxyl groups in hen's egg white lysozyme by the carbodiimide-nucleophile procedure developed in this laboratory has shown that all of the carboxyl groups except glutamic 35 can be modified under normal assay conditions. The presence of the substrate protects the aspartic acid residue 52…
Mössbauer spectroscopic data for a range of substituted alkyl- and aryl-tin(IV) compounds are presented. In presumably isostructural series of these and other compounds, the quadrupole splitting increases in the orders: alkyl ∼ aryl ∼ CHCH2 < C6Cl5∼ C≡CPh < C6F5∼ CF3 < SSnR3 < OSnR3, I < Br < Cl < F, and C6H5 < CHCH2…
The temperature dependences of electrical resistivity and thermal expansion were measured for face-centered cubic Fe 65 (Ni 1- x Mn x ) 35 ternary alloys. The electrical resistivity of ferromagnetic alloys ( x <0.3) decreases with increasing magnetic ordering. In contrast to this, the resistivity of antiferromagnetic…
Abstract The morphology of solution cast films of butadiene and styrene block polymers in both stretched and unstretched state has been studied by electron microscopy, and has been related to the mechanical behavior of these materials. These micrographs confirm the indications from dynamic properties that this materia…
Abstract The effect of plastic deformation on the optical absorption, ESR, and thermoluminescent properties of MgO has been investigated. Plastic deformation produces an optical absorption band at about 217 nm whose intensity is proportional to the percent of deformation. No new ESR signals were detected in the deform…
Abstract Scanning electron microscopy is a method of microscopy that permits resolution better than that of the optical microscope (about 100 A) while examining one surface of a bulk specimen. The technique depends on electronic application to microscopy and has been developed over many years by electronic engineers r…
A model was proposed to analyze the dissolution phenomena involving simultaneous phase changes and its experimental demonstration was done with p-hydroxybenzoic acid and phenobarbital which change to the respective hydrates during dissolution. The mathematical expression for the dissolution according to this model was…
Le graphite exfolié par dissociation thermique de son composé d’insertion avec le chlorure ferrique possède une surface d’une homogénéité exceptionnelle.
There can be no question about the decrease in design efficiency because of the use of ideal mechanical properties listed in the handbooks plus nebulous factors of safety based solely on experience. This practice imposes special difficulties for the younger engineers. Would it not be better to use factual strengths ba…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemical Structure and Crystal Size in Polymer Single CrystalsH. K. LivingstonCite this: Macromolecules 1969, 2, 1, 98–103Publication Date (Print):January 1, 1969Publication History Published online1 May 2002Published inissue 1 January 1969https://pubs.acs.org/doi/10.1021/ma…
M. Bonamico, G. Dessy and V. Fares, J. Chem. Soc. D, 1969, 697 DOI: 10.1039/C29690000697
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLigand effects on the N-N bond in the nitrogen complexes of cobaltAkira Misono, Yasuzo Uchida, Taro Saito, Masanobu Hidai, and Michio ArakiCite this: Inorg. Chem. 1969, 8, 1, 168–169Publication Date (Print):January 1, 1969Publication History Published online1 May 2002Publish…
Turnbull's blue and Prussian blue are identical in all respects and consists of iron in the oxidation states of KFe(III)[Fe(II)(CN)6].