Materials Literature
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A three-dimensional linear analysis of transient patterns occuring during the splay Freedericksz transition is presented including contributions relevant for the electrically driven case. The most rapidly growing modes have a wave vector predominantly along the initial directore alignment. The onset of the pattern for…
Abstract Innerhalb der triklinen Elementarzelle, Raumgruppe P 1 , mit den Gitterkonstanten a = 5,2794(1) Å, b = 9,9279(1) Å, c = 11,3376(2) Å, α = 71,004(4)° und β = 74,601(4)° befinden sich zwei Formeleinheiten. Das den Strukturaufbau charakterisierende dreidimensionale Netzwerk resultiert aus sp 3 ‐hybridisierten Di…
Zirconium cobalt (ZrCo) is being evaluated as an alternative to uranium for tritium storage. The pumping speed and pressure-composition-temperature isotherm profiles for the ZrCo hydrogen and tritium systems were measured to determine isotopic differences and the effect of He-3 induced aging on ZrCo performance. Hydro…
A formulation is presented for the inclusion of segmentation effects in a three-dimensional eddy current model of large laminated iron cores. The model has been developed for the study of eddy currents induced in the end laminations of turbogenerator stator cores. It includes magnetic nonlinearity and represents the o…
Spanning nearly 5000 years of textile history, this book covers the field from the first practical and decorative use of fabrics to the introduction of modern synthetic materials. Organized in an A to Z format, the work provides information on fabric, fabrication methods, machine processes (felting, weaving) and more.…
Abstract Flexural test specimens were injection-molded from random and block polypropylene copolymers with various ethylene contents at cylinder temperatures of 200 to 320°C. Properties such as flexural modulus (FM), flexural strength (FS), heat distortion temperature (HDT), Izod impact strength (IIS), and mold shrink…
Abstract The temperature dependence of the interfacial dielectric loss process in glass bead‐filled high density polyethylene (HDPE) due to an interfacially adsorbed water layer has been studied. The frequency of maximum dielectric loss shifts to lower frequencies with decreasing temperature. This is thought to be due…
A series of 5-[(arylcarbonyl)amino]- and 5-(arylcarbamoyl)pyridine-2-carboxylic acids has been prepared and tested for activity as inhibitors of the enzyme prolyl 4-hydroxylase (EC 1.14.11.2). All the analogues prepared were inhibitors of the enzyme in vitro, the best compounds being equipotent with the known inhibito…
Abstract X-ray powder data and refined cell parameters for two titanium carbonitride solid solutions are presented. Some deviations from Vegard's law were observed.
To verify the performance of permeation-resistant cladding for tritium targets designed for a New Production Reactor Light-Water Reactor, a tritium test facility was designed, developed, fabricated, and certified. Testing is ongoing to verify the performance of reference-designed targets. Accurate measurements were ta…
A revised model for the corrosion behavior of pure chromium has been developed. This model applies to both polycrystals and single crystals. The model has been developed using results from polarization and impedance measurements. In the revised model, the observed diffusion controlled process has been ascribed to surf…
One of the most striking manifestations of instability in solid mechanics is the localization of shear strain into narrow bands during high speed, plastic deformations of metals. According to one theory, the formation of shear bands is attributed to effective strain-softening response, which results at high strain rat…
We show, using constant-pressure molecular-dynamics calculations, that the deviation from Arrhenius behavior in transport properties in the supercooled states of Lennard-Jones (LJ) fluids and soft-sphere (SS) systems starts to occur when the time scale for obtaining ergodicity starts to increase dramatically. The temp…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLinear polymers for nonlinear optics. 2. Synthesis and electrooptical properties of polymers bearing pendant chromophores with methylsulfonyl electron-acceptor groupsDouglas R. Robello, Phat T. Dao, James Phelan, Joseph Revelli, Jay S. Schildkraut, Michael Scozzafava, Abraha…
Photodoping kinetic studies of thin sample of Ag/GexS100−x (21≤x≤45) were made through optical transmission measurements. The initial photodoping rate increases with increasing S content, whereas the total amount of dissolved Ag shows a maximum around the stoichiometric composition GeS2. The results are similar to tho…
The preparation of a number of copper(II) complexes of β-diketones is described. Following the unexpected discovery of a smectic A phase in bis-[l-(4′-decylbiphenyl-4-yl)-3-(4′-fluorobiphenyi-4-yl)propane-l,3-dionato]copper(II), two series of novel copper(II) complexes were prepared; one series is based on l-biphenyl-…
Membrane-bound L-(+)-pantoyl lactone dehydrogenase, an enzyme that catalyzes the formation of ketopantoyl lactone from L-(+)-pantoyl lactone, was solubilized with Brij 35 and purified 78-fold to apparent homogeneity, with a 3.7% overall recovery, from Nocardia asteroides through purification procedures including succe…
The inhibition of the CO/H20/02 reaction by small quantities or HCl was studied in a high temperature, atmospheric pressure flow reactor at temperatures near 1000K. The initial species concentrations of the CO/H30/02; reaction bath were kept constant at about l%/0·6%/0·5% respectively, while the initial concentration…
Photosensitive polymer dispersed liquid crystals (PDLC) were prepared using the nematic mixture E-5 doped with 2 wt-% photochromic stilbene dye in a gelatin binder. The stilbene undergoes E-Z photoisomerization on irradiation. The change of the configuration of dopants perturbs the liquid-crystalline order and the cle…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and properties of poly(3-hydroquinonylpyrrole)Allan B. Kon, J. S. Foos, and Timothy L. RoseCite this: Chem. Mater. 1992, 4, 2, 416–424Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992https://pubs.acs.…