Materials Literature
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Pharmacokinetic and acute-toxicity studies of Gd-DOTA meglumine (Mgl) were evaluated in various animals and compared with those of Gd-DTPA Mgl. The agents were injected intravenously at two dosages: 0.1 or 0.5 mmol/kg. Various organs and tissues were removed at specified times after injection and assayed for gadoliniu…
In recent years development in the field of immunologic assays has been characterized by an expanding use of monoclonal antibodies [1] and two-site ‘sandwich’ type assays [2]. Concomitantly, the assay sensitivities and specificities have improved considerably, which has opened new possibilities and areas of applicatio…
Abstract Reduction of aldehydes with 2-propanol proceeded efficiently by catalysis with hydrous zirconium oxide to give the corresponding alcohols. Most ketones also were reduced efficiently, but conjugated or sterically hindered ketones resisted the reduction. The reduction was carried out with primary, secondary, or…
The infrared and Raman spectra of trans,trans-1,3,5,7-octatetraene have been observed. It has been found that the spectral data reported in 1959 for this compound contain bands due to either impurities or geometrical isomers other than the trans,trans form. Band assignments are performed by using the results of ab ini…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGas-phase and computational studies of pentacoordinate siliconRobert. Damrauer, Larry W. Burggraf, Larry P. Davis, and Mark S. GordonCite this: J. Am. Chem. Soc. 1988, 110, 20, 6601–6606Publication Date (Print):September 1, 1988Publication History Published online1 May 2002P…
Abstract In a continuation of our study of the molecular constitution requirements for the cocrystallization of chemically similar polymeric species, we have directed attention to both homopolymer‐copolymer mixtures and copolymer mixtures of polyethylene. Molecular weight and composition fractions were used exclusivel…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemical evaluation of charge-transport rates in polypyrroleReginald M. Penner, Leon S. Van Dyke, and Charles R. MartinCite this: J. Phys. Chem. 1988, 92, 18, 5274–5282Publication Date (Print):September 1, 1988Publication History Published online1 May 2002Published in…
This paper provides a mean-field description of the spin-density-wave (SDW) state of a quasi-one-dimensional (quasi-1D) conductor with an open Fermi surface, as well as of its behavior in low magnetic field. The variation of simple quantities with the degree of nesting is worked out: These quantities are the specific-…
It is shown why the epitaxial growth of high quality metallic superlattices generally requires a growth temperature approximately 3T m /8 and two components having similar melting temperatures T m . A general observation of RHEED oscillations from growing metal surfaces at temperatures approximately T m /8 is also pre…
Powder X-ray diffraction, electron diffraction and electron microscopic experiments, including high-resolution electron microscopy, have revealed that the Al─Cu─Fe icosahedral phase has a higher degree of structural perfection than other known icosahedral phases. This icosahedral phase exhibits clear equal thickness f…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, structure, and magnetic properties of .mu.-2,2'-bipyrimidine-N,N',N'',N'''-copper(II) complexesMiguel Julve, Giovanni De Munno, Giuseppe Bruno, and Michel VerdaguerCite this: Inorg. Chem. 1988, 27, 18, 3160–3165Publication Date (Print):September 1, 1988Publication…
Abstract It is shown that calculations of electron attenuation lengths and escape depths would require modification of definitions proposed in the literature, since these definition are not universally applicable. Exemplary experimental arrangements are indicated for which more general definitions are necessary, and s…
Plasma treatment is a convenient way to modify the surface (∼25–50 Å) of a polymer for improved adhesion of vacuum deposited metals. X-ray photoemission analysis of plasma modified polyethylene (PE) indicates no detectable chemical effects for argon plasmas, whereas oxygen and nitrogen plasmas create new chemical spec…
The growth of ${\mathrm{NH}}_{4}$Br dendrites from supersaturated aqueous solution is investigated to test recent theories of dendritic growth. A key prediction of these theories is that the tip radius \ensuremath{\rho} and steady-state growth speed v depend strongly on the surface tension anisotropy \ensuremath{\vare…
It was found previously that proteins conjugated to ubiquitin are degraded by an ATP-dependent enzyme system, but the mode of action of this system was unknown. We have resolved from reticulocyte extracts three factors that are required for the ATP-dependent breakdown of 125I-lysozyme-ubiquitin conjugates. Two of the…
Hideyuki Kobayashi, Yang Won Park, Masae Kaneda, Isao Kusakabe, Shigeki Yoshida, Kazuo Murakami; Substrate Specificity of Soymilk-clotting Enzymes I and II
Abstract A discrepancy was discovered between an experimental X-ray diffraction pattern of sodium acetate trihydrate collected with the Gandolfi camera and a calculated pattern based on a single crystal study of the same compound. The experimental d spacings matched those of the calculated pattern with the exception o…
Abstract Characteristic interface phenomena have been studied in zirconia toughened alumina (ZTA) using high‐resolution electron microscopy. Glassy phases in grain triple junctions, microstructure of interfaces between martensitic twins, regularly spaced misfit dislocations at the interface between intragranular t‐ZrO…
Analyse transitoire (fluage sous flexion dans diverses conditions) et dynamique rigidite au voisinage de la temperature de transition vitreuse
The influence of inhibitors of varying functional groups on the crystal growth of calcium phosphate dihydrate (CaHPO 4 •2H 2 O, DCPD) on DCPD seed crystals at pH 6.00, 37 °C, has been studied using the constant composition technique. The inhibitors studied include: (a) polyphosphate (sodium pyrophosphate, sodium hexam…