Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTObservations on silver salt metathesis reactions with very weakly coordinating anionsDavid J. Liston, Young Ja Lee, W. Robert Scheidt, and Christopher A. ReedCite this: J. Am. Chem. Soc. 1989, 111, 17, 6643–6648Publication Date (Print):August 1, 1989Publication History Publi…
Tetrahedral-site occupations were determined for three titanian andradites (San Benito County, California) and a synthetic deuterated hibschite by using X-ray single-crystal and neutron powder data, respectively. Site refinements reveal the presence of tetrahedral vacancies (4-14%) in all three andradites. Infrared ab…
The powdered seeds of Acacia arabica and roots of Caralluma edulis were administered in doses of 2, 3 and 4 gm/kg body-weight to normal and alloxan-diabetic rabbits. The blood glucose levels were estimated before and 2, 4, 6 and 8 hours after the administration of plant suspension. The powdered seeds of Acacia arabica…
Observations of the grinding‐induced transformation in singlephase Ce‐TZP materials, referred to in an earlier paper, are presented. Two techniques were used to grind the surface: by hand in a slurry of abrasive particles and with a high‐speed diamond‐impregnated wheel. Significant differences in X‐ray diffraction pro…
Conducting poly(9-alkylfluorene) and poly(9,9-dialkylfluorene) with long alkyl chains have been prepared and found to be fusible at relatively low temperature. Unlike in poly(3-alkylthiophene), electrical conductivity and band gap energy do not change remarkably at the solid-liquid phase transition. These polymers als…
Electronic structure calcns. were performed on the chemisorption of at. oxygen on Ag(110) and on the subsequent reaction of this chemisorbed oxygen with ethylene. These calcns. show that the presence of subsurface oxygen (i) reduces the bond energy between silver and adsorbed oxygen and (ii) converts the repulsive int…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT2,2,4,4,5,5-Hexakis(2,6-diethylphenyl)pentastanna[1.1.1]propellane: characterization and molecular structureLawrence R. Sita and Richard D. BickerstaffCite this: J. Am. Chem. Soc. 1989, 111, 16, 6454–6456Publication Date (Print):August 1, 1989Publication History Published on…
The quinonoid analogues of TTF are better electron donors than TTF itself. Their prototype 4 has now been synthesized for the first time. Wittig–Horner reaction of the dithiol derivative 1 with the cyclopentadiene adduct of benzoquinone, 2, gives 3, which undergoes retro-Diets–Alder reaction to yield 4 as dark red cry…
The formation of liposomes and their application as delivery systems for injectable drugs are described. Liposomes are microscopic vesicles composed of one or more lipid membranes surrounding discrete aqueous compartments. These vesicles can encapsulate water-soluble drugs in their aqueous spaces and lipid-soluble dru…
Electrochemical and spectroscopic measurements were used to characterize the electrochromic behavior of sputtered V2O5 films. In response to lithium intercalation, the fundamental optical absorption edge of V2O5 shifts to high energies by 0.20–0.31 eV as the lithium concentration increases from Li0.0V2O5 to Li0.86V2O5…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInclusion of polyaniline filaments in zeolite molecular sievesPatricia Enzel and Thomas BeinCite this: J. Phys. Chem. 1989, 93, 17, 6270–6272Publication Date (Print):August 1, 1989Publication History Published online1 May 2002Published inissue 1 August 1989https://pubs.acs.o…
Bacteria with temperature optima of 51–54°C and pH optima of 3.5–4.5 were isolated from geothermal soil collected from Mount Erebus, Ross Island, Antarctica. The isolates were enriched on medium designed for the growth of Thermoplasma but the strains found were members of the genus Bacillus. Comparisons with other the…
Reactive element additions may promote the formation of protective oxide scales on high temperature alloys, and improve long term oxidation resistance by limiting the rate of scale growth and inhibiting scale failure processes. Various modifications to transport properties and mechanical behaviour have been proposed t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLuminescence study of complexation of europium and dicarboxylic acidsPierre P. Barthelemy and Gregory R. ChoppinCite this: Inorg. Chem. 1989, 28, 17, 3354–3357Publication Date (Print):August 1, 1989Publication History Published online1 May 2002Published inissue 1 August 1989…
RAD is an interactive computer program for radial distribution analysis of X-ray diffraction data from amorphous materials. RAD has been written in Fortran 77 and runs on IBM PC/XT/AT or compatible computers.
Surface tension data can be used for estimating the solubility of polymers in liquids. By determining the apolar and the polar components of the surface tension of polymers and of solvents, the attractive free energy, δG 121, of a polymer (1) in a given solvent (2) can be established. By also taking into account the c…
The fluorescent pseudomonads are classified as a group, one characteristic of which is that they do not accumulate poly-3-hydroxybutyrate (PHB) during nutrient starvation in the presence of excess carbon source. In this paper we show that prototype strains from this subclass, such as Pseudomonas aeruginosa, Pseudomona…
The crystal structure of the complex of the anti-lysozyme HyHEL-10 Fab and hen egg white lysozyme has been determined to a nominal resolution of 3.0 A. The antigenic determinant (epitope) on the lysozyme is discontinuous, consisting of residues from four different regions of the linear sequence. It consists of the exp…
SIR 88 is an integrated package of computer programs for the solution of crystal structures. The package is based on the estimation of one- and two-phase structure seminvariants and three- and four-phase structure invariants according to the theory of representations [Giacovazzo (1977). Acta Cryst. A 33 , 933–944; (19…