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。
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEstimation of the critical surface tension for polymers from molecular constitution by a modified Hildebrand-Scott equationSouheng WuCite this: J. Phys. Chem. 1968, 72, 9, 3332–3334Publication Date (Print):September 1, 1968Publication History Published online1 May 2002Publis…
Abstract A comparative study of the reactivity of hydroxide and various alkoxide anions was made by determining percentage weight loss of poly(ethylene terephthalate) fiber. Regardless of the basicity of the anions, the order of reactivity was found to be hydroxide < tert ‐butoxide < sec ‐propoxide < methoxid…
During the last stage of sintering of ZnO, a decrease in bulk density is accompanied by an increase in pore size and a decrease in the number of pores. Examination of the microstructures indicated that the pores are almost always situated at the grain boundaries and at the corners. The dominant pore size increases wit…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLiquid crystals. II. Effects of terminal group substitution on the mesomorphic behavior of some benzylideneanilinesJoseph A. Castellano, Joel E. Goldmacher, Lucian A. Barton, and Jean S. KaneCite this: J. Org. Chem. 1968, 33, 9, 3501–3504Publication Date (Print):September 1,…
Abstract This paper reports on three investigations into the toxic potential of plastics, resins and addivtives, with emphasis on those having medical, dental, or pharmaceutical application. The following points were noted: (1) two different lots of PVC resin contained toxic material which was leachable into a biologi…
Parawollastonite crystallizes in space group P 2 1 / a with following cell dimensions: a = 15.426 Å, b = 7.320 Å, c = 7.066 Å, and β = 95°24′15″. M amedov and B elov 's coordinates for wollastonite, as referred to a doubled monoclinic cell, were used to compute a preliminary set of structure factors for parawollastoni…
Diffusion of the radioactive tracer 22 Na in a commercial SiO 2 glass was investigated from 170° to 1000°C. The temperature dependence curve had discontinuities at about 573° and 250°C. The resulting Arrhenius equations are D = 3.44 × 10 2 exp(‐21.1 kcal/RT) cm 2 /sec between 1000° and 573°C, D = 0.398 exp(‐25.8 kcal/…
Extension of an earlier theory of Hertzian fracture in brittle isotropic materials is here made to include the case of brittle single crystals, with particular reference to crystals having the diamond structure. A detailed description is first given of the inhomogeneous stress field in a flat, elastic specimen loaded…
The crystal structure of valleriite has been determined to consist of alternate interlayering of layers of two kinds: a brucite-like layer of composition [Mg .68 Al .32 (OH) 2 ]; and a novel sulfide layer of composition [Fe 1.07 Cu .93 S 2 ]. The sulfide layer consists of two sheets of sulfur atoms in close-packed ass…
The microstructure of diamonds formed from the graphite in cast iron by an explosive shock process was investigated by means of transmission electron microscopy electron, diffraction, and selected beam microscopy. Morphologically, the material consists of a mixture of two different forms: compact aggregates of of usua…
The temperature coefficient of capacitance (TCC) of most insulators is dominated by five components. The theoretical analysis of these components is outlined and it is shown that, for given ranges of permittivity, the analysis can be greatly simplified. This simplified treatment is shown to apply to widely different t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of crystal radii and electronegativities on the crystallization of AB2X4 stoichiometriesK. Kugimiya and H. SteinfinkCite this: Inorg. Chem. 1968, 7, 9, 1762–1770Publication Date (Print):September 1, 1968Publication History Published online1 May 2002Published inissu…
Shock wave velocity and pressure in high speed liquid-solid impact based on particle velocity
Growth of the posterior silk gland and biosynthesis of fibroin during the fifth larval instar of the silkworm, Bombyx mori, have been studied. In accordance with the exponential increase in the wet weight of the gland, the amounts of DNA, RNA, protein, and lipids per animal increased rapidly in the early stage of the…
Densification and grain growth rates at the intermediate stage of the sintering of pressed zinc oxide pellets were measured in air and oxygen. Application of a lattice diffusion model to the results gave calculated diffusion coefficients in good agreement with directly measured diffusion coefficients for zinc. The cha…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSURFACE CHEMISTRY ASPECTS OF EMULSION POLYMERIZATIONCharles P. RoeCite this: Ind. Eng. Chem. 1968, 60, 9, 20–33Publication Date (Print):September 1, 1968Publication History Published online1 May 2002Published inissue 1 September 1968https://pubs.acs.org/doi/10.1021/ie50705a0…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Role of Organic Agents in the Stress Crazing and Cracking of Poly(2,6-dimethyl-1,4-phenylene oixde)G. A. Bernier and R. P. KambourCite this: Macromolecules 1968, 1, 5, 393–400Publication Date (Print):September 1, 1968Publication History Published online1 May 2002Publishe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPyridine-induced solvent shifts in the nuclear magnetic resonance spectra of hydroxylic compoundsPaul V. Demarco, Eugene Farkas, David Doddrell, Banavara L. Mylari, and Ernest WenkertCite this: J. Am. Chem. Soc. 1968, 90, 20, 5480–5486Publication Date (Print):September 1, 19…
(a) After injection of labeled leucine into the eye of goldfish, radioactive protein rapidly accumulates in the contralateral optic tectum in the layer containing the synaptic endings of the optic fibers. This material reaches the tectum 6-12 hr after the isotope injection, a fact which indicates that the rate of tran…
Not available