Materials Literature
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An air‐metal hydride battery (32 Ah) using a noble metal‐free air electrode (300 cm 2 ) was constructed and tested. The battery was charged with a third nickel mesh electrode and discharged using oxygen, with discharge voltages of 0.87 V at 3 A and 0.58 V at 30 A. The peak power was 25 W (83 mW/cm 2 ) with oxygen and…
This is a study of visual contrast sensitivity in a series of subjects with previously diagnosed occupational organic-solvent-induced chronic toxic encephalopathy. Contrast sensitivity was measured for 16 subjects using the Vistech VCTS 6500 chart. The results were compared with age-stratified normal data. Six of the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydroperoxycycloartanes from Tillandsia recurvataGabriela M. Cabrera and Alicia M. SeldesCite this: J. Nat. Prod. 1995, 58, 12, 1920–1924Publication Date (Print):December 1, 1995Publication History Published online1 July 2004Published inissue 1 December 1995https://pubs.acs.…
A mathematical model for the discharge of a metal‐hydride electrode was developed. The model was used to study the effect of various parameters on predicted discharge curves. The simulations obtained using the model show the expected decrease of charge utilization as the rate of discharge is increased. Increasing the…
The influence of zirconium and hafnium additions in substitution to titanium, is investigated on TiNi shape memory alloy. Microstructural and thermomechanical studies are conducted on an arc-melted Ti38Ni50Hf12 alloy. Results are compared with those of an equiatomic TiNi.
The isocitrate dehydrogenases from the extremely halophilic Archaeon, Haloferax volcanii, and from the hyperthermophilic Archaeon, Sulfolobus solfataricus, have been purified to electrophoretic homogeneity. The purified enzymes have been characterised with respect to their cofactor specificities, subunit compositions…
Tryptophan synthase, an alpha 2 beta 2 tetrameric complex, is a classic example of an enzyme that is thought to "channel" a metabolic intermediate (indole) from the active site of the alpha subunit to the active site of the beta subunit. The solution of the three-dimensional structure of the enzyme from Salmonella typ…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDirect Synthesis of Polyoxovanadate-Pillared Layered Double HydroxidesFathi Kooli and William JonesCite this: Inorg. Chem. 1995, 34, 25, 6237–6238Publication Date (Print):December 1, 1995Publication History Published online1 May 2002Published inissue 1 December 1995https://p…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLow-Energy Pyrocatechol to Cobalt(III) Electron Transfer in the Cobaloxime-Catalyzed Oxidation of 3,5-Di-tert-butylpyrocatecholLaszlo I. Simandi, Terez Barna, Gy. Argay, and Tatiana L. SimandiCite this: Inorg. Chem. 1995, 34, 25, 6337–6340Publication Date (Print):December 1,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, 77Se and 119Sn NMR Study, and X-ray Crystal Structure of the Sn4Se104- Anion and Raman Spectra of SnSe44- and Sn4Se104-Janette Campbell, David P. DiCiommo, Helene P. A. Mercier, Ayaaz M. Pirani, Gary J. Schrobilgen, and Marc WilluhnCite this: Inorg. Chem. 1995, 34…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDiffusion of Macromolecules in Collagen and Hyaluronic Acid, Rigid-Rod-Flexible Polymer, Composite MatrixesV. Shenoy and J. RosenblattCite this: Macromolecules 1995, 28, 26, 8751–8758Publication Date (Print):December 1, 1995Publication History Published online1 May 2002Publi…
Abstract Scandium(III) trifluoromethanesulfonate was found to be an efficient catalyst as a Lewis acid for the condensation reaction of trimethylhydroquinone with isophytol to afford α-tocopherol. The condensation reaction proceeded smoothly using only a 0.001 molar amount of the catalyst. The catalyst was easily reco…
To incorporate kenaf fibers into textiles, it is important to establish uniformity of fibers extracted from the base to the tip of the plant. Bast fiber quality depends on both physical (crystallinity, crystallite size, and orientation) and chemical (lignin, gum, and hemicellulose) properties. Therefore, the first obj…
We have investigated the local structure about the Cu, Ba, and Hg atoms in ${\mathrm{HgBa}}_{2}$${\mathrm{CuO}}_{4+\mathrm{\ensuremath{\delta}}}$ using the x-ray absorption fine structure (XAFS) technique. We find that most of the local structure results are consistent with the diffraction measurements except for two…
Abstract The addition of NO (0 to 400ppm) to mixtures of H 2 (ca. 1%) and O 2 (0.7 to 22%) has been studied over the temperature range 700 to 825 K, in a flow reactor at atmospheric pressure. The overall effect of NO is to promote the oxidation of H 2 but high concentrations of O 2 actually inhibit the NO‐promoted oxi…
Calponin from chicken gizzard induced polymerization of actin in the presence of 10 mM KCl. Only 2 min after the addition of KCl in the presence of a 0.0625-0.25:1 molar ratio of calponin to actin, a Poisson-type length distribution (with an average length of approx. 0.7 micron) was observed with formed actin filament…
This paper presents a review of the work on the molecular design of liquid crystals for active matrix displays (AMLCDs), thin-film-transistor-polymer dispersed liquid crystal displays (TFT-PDLCDs) and examines in some detail the relationships between liquid crystalline molecular structures and their physico-chemical p…
Epoxy resin coated electrode specimens were subjected to partial discharges (PD) in air at twice the discharge inception voltage for durations ranging to 5000 h. The PD behavior was characterized by a transition from initially large pulse type discharges (- 200 to 300 pC) to either small pulse (- 1 pC), pseudoglow, gl…
Readout characteristics have been investigated with a superlow-power readout method in order to solve the problem of information destruction caused by repeated readout operations in photon-mode photochromic memories. For ordinary photochromic diarylethene media, it was possible to read signals of about 10 5 –10 6 cycl…
Microstructure shape of “crystal-originated particles” (COP's) on mirror-polished silicon wafers (a) as received, (b) cleaned with NH 4 OH/H 2 O 2 /H 2 O solution (SC-1), and (c) annealed at high temperature (∼1150° C) in O 2 /N 2 mixture or in H 2 , were observed using a scanning electron microscope (SEM), transmissi…