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 ISSUEPREVArticleNEXTInfluence of strain on chemical reactivity. Relative reactivity of torsionally distorted double bonds in MCPBA epoxidationsKenneth J. Shea and Jang Seob KimCite this: J. Am. Chem. Soc. 1992, 114, 8, 3044–3051Publication Date (Print):April 1, 1992Publication History Published…
The principal pressure-induced changes in spectra observed are reversible, so that the characterization of the high density states of these materials requires in situ measurements at high pressure. The dominant change in all three glasses is a marked shift of the midfrequency Raman bands to higher frequencies at highe…
Abstract Parallel-oriented and exceptionally long (> 10 μ m) tubes of halloysite occur in the pallid zone of a deeply-weathered lateritic profile on granite in southwest Australia. Transmission electron microscopy and selected-area electron diffraction of ultrathin sections showed that kaolinite plates within pseud…
Linear and quadratic nonlinear-optical (NLO) properties of a new organic–inorganic crystal, 2-amino-5-nitro-pyridinium-dihydrogen phosphate (2A5NPDP), are reported. 2A5NPDP was designed to display high NLO efficiency by incorporating highly polarizable organic molecules arranged in a polar order between phosphate poly…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA new class of organocopper and organocuprate compounds derived from copper(I) arenethiolatesD. Martin Knotter, David M. Grove, Wilberth J. J. Smeets, Anthony L. Spek, and Gerard Van KotenCite this: J. Am. Chem. Soc. 1992, 114, 9, 3400–3410Publication Date (Print):April 1, 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUse of factor analysis and XPS to study defective nickel oxideAgustin R. Gonzalez-Elipe, Juan P. Holgado, Rafael Alvarez, and Guillermo MunueraCite this: J. Phys. Chem. 1992, 96, 7, 3080–3086Publication Date (Print):April 1, 1992Publication History Published online1 May 2002…
Abstract A composite degradation methodology is extended to the conversion‐dependence function in order to explain the importance of multiple reaction mechanisms which might be considered to be involved in degradation processes. Based on two elementary reaction mechanisms, a specific form of the model equation is deri…
The kinetics of cotton cellulose depolymerization by the brown rot fungus Postia placenta and the white rot fungus Phanerochaete chrysosporium were investigated with solid-state cultures. The degree of polymerization (DP; the average number of glucosyl residues per cellulose molecule) of cellulose removed from soil-bl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic characterization of tetranuclear copper(II) and cobalt(II) exchange-coupled clusters encapsulated in heteropolyoxotungstate complexes. Study of the nature of the ground statesCarlos J. Gomez-Garcia, Eugenio Coronado, and Juan J. Borras-AlmenarCite this: Inorg. Chem.…
An extended mathematical model that takes into account the water vapor sorption kinetics of wool fibers is presented to describe the coupled heat and moisture transport in a wool fabric. The predictions from the two-stage model are compared with those from the Nordon-David model and a simple Fickian diffusion model, a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDioxygen-copper reactivity and functional modeling of hemocyanins. Reversible binding of O2 and carbon monoxide to dicopper(I) complexes [CuI2(L)]2+ (L = dinucleating ligand) and the structure of a bis(carbonyl) adduct, [CuI2(L)(CO)2]2+Kenneth D. Karlin, Zoltan Tyeklar, Amja…
Poly(3-hydroxybutyrate) and the copolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) were fermented to methane and carbon dioxide within 16 days by an anaerobic sewage sludge consortium. The cultures adapted quickly to metabolize these polymeric compounds, and between 83 and 96% of the substrate carbon was transform…
Transglutaminase was used to pr0duce filrns by polymerization of whey proteins. The reaction mixture consisted of 5% whey protein in pH 7.5 buffered solution under reducing conditions in the presence of ea 2 + ions and glycerol 1be water vapor transferability and the percentage of moisture of films were not significan…
The kinetics for the epoxidation of methyl esters of palm olein (MEPOL) by peroxyformic acid and peroxyacetic acid generated in situ were studied. The rate‐determining step was found to be the formation of peroxy acid. Epoxidized MEPOL (EpMEPOL), with almost complete conversion of the unsaturated carbon and negligible…
An Escherichia coli strain has been constructed that produces the copolymer poly-(3-hydroxybutyrate-co-3-hydroxyvalerate) P(HB-co-HV). This has been accomplished by placing the PHB biosynthetic genes from Alcaligenes eutrophus into an E. coli fadR atoC(Con) mutant and culturing the strain in M9 minimal medium containi…
Abstract Specific infrared absorptions for each form of Nylon‐6 have been indentified. Quenched films were prepared by melt casting and converted in turn to the α‐crystalline and γ‐crystalline structures. The films were examined using Fourier transform infrared spectroscopy (FTIR) with the attenuated total reflection…
Recently the interest in ferroelectric materials for memory applications has been renewed on the basis of concepts where ferroelectric thin film capacitors are parts of an Integrated Circuit (IC) process compatible memory cell. This paper shortly reviews the field of ferroelectric memories. The selection, deposition a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe polyelectrolyte brush: poor solventR. S. Ross and P. PincusCite this: Macromolecules 1992, 25, 8, 2177–2183Publication Date (Print):April 1, 1992Publication History Published online1 May 2002Published inissue 1 April 1992https://pubs.acs.org/doi/10.1021/ma00034a018https:…
The piezoelectric and electrostrictive effects in ferroelectric ceramics are reviewed with an emphasis on those properties that are relevant for applications in actua tors. Various contributions to the piezoelectric effect in ferroelectric ceramics, especially lead zirconate titanate ceramics, are discussed in some de…
We present coherent-potential-approximation (CPA) calculations and first- and second-order Raman spectra for diamonds with varying concentrations of $^{12}\mathrm{C}$ and $^{13}\mathrm{C}$. The calculations are based on the valence-force model of Tubino, Piseri, and Zerbi [J. Chem. Phys. 56, 1022 (1972)]. Contrary to…