Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of large polar side groups on the glass transition temperature of acrylic copolymersAlberto Gallardo and Julio San RomanCite this: Macromolecules 1993, 26, 14, 3681–3686Publication Date (Print):July 1, 1993Publication History Published online1 May 2002Published inissu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBicyclo[3.2.2]non-1-ene: matrix isolation and spectroscopic characterization of a moderately strained bridgehead olefinMurthy S. Gudipati, Juliusz G. Radziszewski, Piotr Kaszynski, and Josef MichlCite this: J. Org. Chem. 1993, 58, 14, 3668–3674Publication Date (Print):July 1…
Abstract The most effective chemical blowing agents for producing cellular rubber products are ADCA, activated forms of ADCA, OBSH and DNPT. Blends of ADCA types and OBSH are also used quite extensively. These blowing agents may be used to make automotive weatherstripping, various types of athletic padding, insulation…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProbing the role of lysine 16 in ras p21 protein with unnatural amino acidsHyun Ho Chung, David R. Benson, and Peter G. SchultzCite this: J. Am. Chem. Soc. 1993, 115, 14, 6414–6415Publication Date (Print):July 1, 1993Publication History Published online1 May 2002Published in…
Abstract This paper describes the effect of three natural zeolite-containing pozzolanic admixtures on expansion of mortar bars caused y alkali-silica reaction (ASR). Heulandite is present in all three samples, and clinoptilolite may be also present in one sample. Silica is also present in all three samples, but the mi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetic model for tensile deformation of polymers. 5. Effect of temperature on orientation efficiencyYves Termonia and Paul SmithCite this: Macromolecules 1993, 26, 15, 3738–3741Publication Date (Print):July 1, 1993Publication History Published online1 May 2002Published inis…
Eight individuals with an unusual dwarfing skeletal dysplasia have been investigated in a remote rural area in Northern Zululand, South Africa. These dwarfed individuals are members of a community numbering some 10,000 persons; approximately 20% have a degenerative arthropathy affecting mainly the major joints of the…
Photoluminescence studies have been carried out on several amorphous poly(p-phenylene sulfide) (PPS) films using a frequency-tripled pulsed Nd:(yttrium aluminum garnet) laser at 355-nm wavelength. The main luminescence is attributed to the ${\mathrm{\ensuremath{\pi}}}^{\mathrm{*}}$\ensuremath{\rightarrow}\ensuremath{\…
We report the results of precise x-ray- and neutron-scattering experiments on lead phosphate in the critical-temperature region of the ferroelastic transition. These results show the existence of anomalous incommensurate satellite reflections above ${\mathit{T}}_{\mathit{c}}$, where the incommensurability changes from…
This article examines the changes in interparticle forces brought about on prolonged contact (1 year period) of a bentonite clay with artificial seawater. The study is undertaken with the purpose of identifying the physico‐chemical factors that impart a nonswetling character to smectite clays deposited in marine envir…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymer diffusion in semicrystalline polymers. 1. Poly(ether imide)/poly(aryl ether ketone ketone)Steven R. Lustig, John G. Van Alsten, and Benjamin HsiaoCite this: Macromolecules 1993, 26, 15, 3885–3894Publication Date (Print):July 1, 1993Publication History Published onlin…
Alumina films which were anodized in a sulfuric acid solution were studied optically and chemically to verify the presence of unoxidized aluminum in the films. We extracted metallic aluminum from anodic alumina films by using bromine methanol and detected unoxidized aluminum successfully. The volume ratio of unoxidize…
Fixation of the ammonium ion (NH4 +) by clay minerals is an alternate way of building the nitrogen (N) pool in soil to optimize N crop recovery and minimize losses. Clay minerals (illite, montmorillonite, and vermiculite) and an illitic Portnoeuf soil were used to compare NH4 + fixation abilities. Total N determinatio…
The super duplex stainless steel SAF 2507, with a typical composition of ~25%Cr, 3·8%Mo, ~7%Ni, and 0·27%N, has been isothermally heat treated in the temperature range 700–1030°C for times between 1 min and 72 h. The influence of heat treatment on impact toughness and pitting corrosion resistance has been investigated…
The superplastic deformation behavior of fine‐grained, yttria‐stabilized tetragonal zirconia under conditions of biaxial gas‐pressure deformation is described. Sheet specimens were deformed into hemispherical caps at temperatures ranging from 1450° to 1600°C and at imposed gas pressures ranging from 345 to 2760 kPa. F…
XPS spectra were recorded for a poly crystalline CdS sample. For comparison, a surface exposed to air for 1 h (Accession #00115) and a surface prepared by cleaving in situ (Accession #00114) were examined. The record includes Cd 4d, S 2p, Cd 3d, Cd MNN, and valence band spectra.
(Co,Fe) 3 O 4 films were synthesized by the sol–gel method through metalorganic compounds. The (Co,Fe) 3 O 4 films (Co:Fe = 2:1) showed the characteristic behavior of the spinodal decomposition by heat treatments within the miscibility gap. The coercive force of the spinodally decomposed films increased from 0.9 kOe f…
A theoretical expression for the sensitivity of a detection coil for a vibrating sample magnetometer (VSM) is derived. This expression is used to design a detection coil system for a biaxial VSM for measuring the magnetization components in the direction of the applied field (x direction) and perpendicular to the appl…
Deposition of Y2O3 films on Si is of interest due to its use as a heteroepitaxial dielectric material to obtain Si-on-insulator or as an epitaxial buffer layer for the growth of YBa2Cu3Ox, high temperature superconductors on Si. In this investigation, Y2O3 films have been deposited in the downstream location in an ele…
, Peter Landrock, Carl Pomerance, Average Case Error Estimates for the Strong Probable Prime Test, Mathematics of Computation, Vol. 61, No. 203, Special Issue Dedicated to Derrick Henry Lehmer (Jul., 1993), pp. 177-194