Materials Literature
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Pearlitic flake-graphite grey cast irons have long been widely used for the manufacture of diesel-engine combustion-chamber components. Nonetheless, very few pertinent high-temperature data are to be found in published work. The investigation described attempts to enlarge current knowledge on the high-temperature beha…
The electric-field $g$ shift of ${\mathrm{Yb}}^{3+}$ in the scheelite series CaW${\mathrm{O}}_{4}$, SrW${\mathrm{O}}_{4}$, and BaW${\mathrm{O}}_{4}$ has been measured. In SrW${\mathrm{O}}_{4}$, and especially in BaW${\mathrm{O}}_{4}$, the Yb ion is much smaller than the cation, and we find a substantial increase in th…
After repeated switching, ferroelectric ceramic plates will exhibit aging evident in hysteresis loops as a marked decrease in remanent polarization (Pr) and an increase in coercive field (Ec). A hot-pressed ceramic having a composition of 65% lead zirconate-35% lead titanate with 2 at.% lanthanum and having a grain si…
The morphological appearance of cotton fibers scoured at 100 and 140°C then subjected to a treatment with cellulase, has been examined as a function of the enzymatic action time. The rate of enzymatic digestion varies according to the region of the secondary wall under consideration, and examina tion of the degraded f…
Coherent spinodal curves for the [001] and [100] directions were calculated for the system TiO 2 ‐SnO 2 . Inside the [001] spinodal curve, the crystalline solutions decomposed by a modulated phase composed of TiO 2 ‐rich and SnO 2 ‐rich plates perpendicular to the [001] direction. No modulation of structure was observ…
The specific heats of the semimetals antimony and bismuth have been measured from 0.03 to 0.8 K. The best fit to the antimony data yields ${C}_{p}=4.55{T}^{\ensuremath{-}2}+119T+180{T}^{3}$ \ensuremath{\mu}J/mole K. The ${T}^{\ensuremath{-}2}$ term associated with the nuclear quadrupole interaction is in good agreemen…
The internal friction of mixed Li‐Na, Li‐K, Li‐Rb, Li‐Cs, Na‐K, Na‐Rb, Na‐Cs, and K‐Rb silicate glasses is interpreted on the basis of the various explanations proposed for the mixed alkali effect. A direct correlation was found between the mechanical loss peak due to the stress‐induced movement of the alkali ions, i.…
B. Etherton; Effect of Indole-3-acetic Acid on Membrane Potentials of Oat Coleoptile Cells 1, Plant Physiology, Volume 45, Issue 4, 1 April 1970, Pages 527–528,
The CASING (crosslinking by activated species of inert gases) treatment of polypropylene film in both oxygen and nitrous oxide is shown to be an effective surface treatment for conventional adhesive bonding. A crosslinked surface extending to a depth of about 300 Å, apparently independent of exposure time, is produced…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMass spectral evidence for catenanes formed via a "Moebius-strip" approachDavid A. Ben-Efraim, C. Batich, and E. WassermanCite this: J. Am. Chem. Soc. 1970, 92, 7, 2133–2135Publication Date (Print):April 1, 1970Publication History Published online1 May 2002Published inissue…
Abstract The reaction of phenyl isocyanate with phthalic anhydride to form N‐phenylphthalimide is strongly solvent dependent and catalyzed by tertiary amines. Water and alcohol promote imide formation, but Lewis acids and organometallic compounds are ineffective. In DMSO solvent, benzophenone tetracarboxylic dianhydri…
The various optical, caloric, dielectric, elastic, and microwave investigations which have been used to study the tunneling states connected with the motion of atomic and molecular impurities in alkali halides are reviewed.
Abstract The free‐radical emulsion polymerization of chloroprene containing monovinylacetylene in concentrations from 0% to 10% has been studied. It was found that in the presence of monovinylacetylene, a polymer with a great gel content, increased values of plasticity, and deteriorated physical and mechanical propert…
Abstract Steigende Qualitätsanforderungen an das für die Schmelzfluß‐Elektrolyse zur Aluminium‐Gewinnung benötigte Aluminiumoxid führten zur Entwicklung eines neuen Wirbelschichtverfahrens zur Entwässerung von Aluminiumhydroxid. Das Verfahren, in dessen aus Wirbelschichtofen und Rückführzyklon gebildeten Hochtemperatu…
Measurements were made of ionic fluxes in cells of the marine algae G. monile and G. pulvinata. The data for sodium and chloride fluxes appear to be consistent with the usually proposed model for the plant cell in which the vacuolar, cytoplasmic, and external compartments are in series, with the cytoplasm bounded on t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleLifetime of the 4T2g state of chromium(III) complexesShou-Nan Chen and Gerald B. PorterCite this: J. Am. Chem. Soc. 1970, 92, 7, 2189–2190Publication Date (Print):April 1, 1970Publication History Published online1 May 2002Published inissue 1 April 1970https://pubs.acs.org/doi/10…
The magnetizations of phosphates and vanadates of rare-earth elements RXO 4 (R=Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er and Yb, and X=P and V) were studied in the temperature range of 1.9°K to 630°K. There were not found any magnetic transitions between 4.2°K and 630°K for all system, while F. F. Y. Wang et al. reported som…
1. Threonine aldolase was purified about 200-fold in 10% yield from Clostridium pasteurianum and its properties were examined. The final preparation gave three bands after ionophoresis on polyacrylamide gel. 2. The purified enzyme was shown to produce glycine and acetaldehyde in stoicheiometric amounts from threonine.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh molecular weight boron sulfides. V. Vaporization behavior of the boron-sulfur systemHorng-Yih Chen and Paul W. GillesCite this: J. Am. Chem. Soc. 1970, 92, 8, 2309–2312Publication Date (Print):April 1, 1970Publication History Published online1 May 2002Published inissue…
Abstract Das IR‐Spektrum von [ONC(CN) 2 ] − wird beschrieben. Die Zuordnung der Banden geschieht mit Hilfe von partieller 15 N‐Substitution. Bildet dieses Anion Komplexe, so verschieben sich seine IR‐Banden. Die Verschiebungen werden angegeben und die möglichen Bindungsverhältnisse diskutiert. Ferner wird ein unerwart…