Materials Literature
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The results of two types of experiments on electrochromic (poly)crystalline films of rf sputtered WO3 are presented as additional new evidence that the behavior (especially scattering) of the free electrons plays a dominant role in the electrochromic properties of such films.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProcedures for determining the neutralizing capacity of wood during hydrolysis with mineral acid solutionsEdward L. Springer and John F. HarrisCite this: Ind. Eng. Chem. Prod. Res. Dev. 1985, 24, 3, 485–489Publication Date (Print):September 1, 1985Publication History Publish…
The purpose of this study was to develop a multivariate method for structuring a sizing system for women's apparel. The I 977 suvey of U.S. Army women was the data base. The sample was limited to 1217 subjects who were White or Black and 17-3 5 years old. The methodology underlying PS 42-70, the current U.S. sizing st…
The electrochemical properties of solid films of Mt‐2,3,9,10,16,17,23,24‐octacyanophthalocyanine 2 were studied by cyclic voltammetry in aqueous electrolytes. The thin (10–100 nm) film electrodes show remarkably stable electrochromic redox behavior, and the charge exchanged in the cathodic and anodic waves, respective…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, insertion and reductive elimination reactions of a hydrido(alkoxy)iridium complexLinda J. Newman and Robert G. BergmanCite this: J. Am. Chem. Soc. 1985, 107, 18, 5314–5315Publication Date (Print):September 1, 1985Publication History Published online1 May 2002Publi…
Abstract The applicability of 27 Al and 29 Si magic-angle-spinning nuclear magnetic resonance (MASNMR) spectroscopy to the investigation of order-disorder in 1 : 1 dioctahedral layer-silicates was tested. 27 Al and 29 Si MASNMR showed the existence of short-range order in all these systems while XRD showed different d…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT.mu.-Oxo iron(III) phthalocyanine. Electronic structure of the solid form obtained from a dihydroxoiron(III) precursorBrendan J. Kennedy, Keith S. Murray, Peter R. Zwack, Heinrich Homborg, and Winfried KalzCite this: Inorg. Chem. 1985, 24, 20, 3302–3305Publication Date (Prin…
Three dimensions of human comfort with respect to clothing are proposed: physical, psychological, and social comfort. A pilot study of 60 women, aged 60 to 80, was conducted to develop and test a semantic differential measure of these three human comfort dimensions with respect to actual and ideal insulative clothing…
The changes in collagen metabolism during skeletal muscle growth were investigated by measuring rates of synthesis and degradation during stretch-induced hypertrophy of the anterior latissimus dorsi muscle of the adult chicken (Gallus domesticus). Synthesis rates were obtained from the uptake of tritiated proline inje…
A continuum model for dynamic tensile cleavage fracture and fragmentation has been developed for detailed simulation of brittle fracture processes in elastoplastic materials. The model includes processes for nucleation of microcracks, stress-dependent growth, coalescence and fragmentation, and stress relaxation caused…
It is found that, far above the ferroelectric transition temperature, Tc, certain ferroelectric systems show a temperature dependent index of refraction, n(T), that is qualitatively different from ordinary ferroelectrics. We review measurements in these systems and show how some aspects of this n(T) data can be quanti…
Although notched specimens have been much used in studies of hydrogen embrittlement, precracked–specimen testing has become more widespread in the last 15 years or so. However, recent work has revived interest in the use of notched specimens for fundamental studies. The background for, and recent results from, the use…
The Azotobacter vinelandii nifE gene was isolated and its complete nucleotide sequence was determined. The amino acid sequences deduced from the A. vinelandii nifE and nifD gene sequences were compared and found to share striking primary sequence homology. This homology implies a functional and possibly an evolutionar…
Iron thin films with soft magnetic properties have been deposited by Dual Ion Beam Sputtering. And the dependence of their crystal structure and magnetic properties on preparation conditions, especially on ion bombardment onto film surface during deposition, has been investigated. All films are composed fine crystalli…
Boron carbide compacts sintered between 2220° and 2250° C showed abnormal grain growth that was associated with twinning and microcracking. The twin direction was 〈011〉. The microcracking was linked to thermal expansion anisotropy determined by high‐temperature lattice constant measurement.
The effect of additions of B, Al, and B + Al on the pressureless sintering of β‐Sic was examined. The influence of the sintering atmosphere and heating schedule on densification behavior, polytype transformation, and microstructure development was also studied. High densities were obtained at 1940°C by the simultaneou…
Extensive high-resolution heat-capacity measurements have been carried out near the smectic-A--hexatic-B transition of various compounds in the homologous series of n-alkyl-4'-n-alkoxybiphenyl-4-carboxylate. In contrast with the nematic--smectic-A and smectic-A--smectic-C (or chiral-smectic-C) transitions, the critica…
In a flux-grown SrTiO3 crystal, monodomain and polydomain regions have been observed below the transition temperature without applying external stress. For each region, measurements of the lattice constant as a function of temperature are made by means of high-angle double-crystal X-ray diffractometry (HADOX) with a p…
Since the Curie temperature (Tc) of R-Fe-B permanent magnets is lower than conventional 1/5 and 2/17 magnets, the irreversible loss due to the change of coercivity is critical when considering their application. The simple way to guarantee the thermal properties is to raise the coercivity at room temperature. The effe…
Thermal expansion was measured for skull‐melt‐grown undoped single‐crystal zirconia as well as for crystals containing 2.8 wt% MgO, 4 wt% CaO, and 3 to 20 wt% Y 2 O 3 . Samples were cycled in air from room temperature to 1500°C. The partially stabilized samples experienced a phase transformation which was strongly dep…