Materials Literature
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A long-term-sampling evaluation was made of the quantity, discharge pathway, and chemical form of 14C released from 2 pressurized water reactors (PWR) and 1 boiling water reactor (BWR) in the northeastern United States. For the R. E. Ginna PWR the discharge rate of gaseous 14C was 11.6 Ci/GW(e)-yr. Venting of gas deca…
The polarization effect of one or several tilted, parallel air-spaced fused silica plates is calculated. It is generally necessary to include higher order reflections. A device consisting of 1–4 plates tilted 10–45° from normal incidence is proposed for the calibration of differential linear dichroism (LD) in the meas…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInsertion and oxidative addition reactions of rhodium porphyrin complexes. Novel free radical chain mechanismsRalph S. Paonessa, Nicholas C. Thomas, and Jack HalpernCite this: J. Am. Chem. Soc. 1985, 107, 14, 4333–4335Publication Date (Print):July 1, 1985Publication History…
Abstract Linear polyurethaneimide elastomers (PUI) were obtained from polyether‐ or polyester‐diols, diphenylmethane diisocyanate or bitolylene diisocyanate and pyromellitic acid dianhydride. It was found that these polymers have considerably better mechanical properties than typical linear polyurethanes (PU). The ela…
The magnetic and superconducting properties of the Heusler alloy ${\mathrm{Pd}}_{2}$YbSn have been investigated with heat-capacity, resistivity, and magnetic-susceptibility measurements. The material undergoes a superconducting transition at 2.46 K and a magnetic transition at 0.23 K. The absence of reentrant behavior…
The solubility and mode of incorporation for BaO in BaTiO 3 were studied by X‐ray powder diffraction, scanning and transmission electron microscopy, electron probe microanalysis, and equilibrium electrical conductivity measurements. The presence of barium orthotitanate, Ba 2 TiO 4 , as a second phase for samples conta…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsolation and x-ray crystal structures of the mononuclear cuprates [CuMe2]-, [CuPh2]-, and [Cu(Br)CH(SiMe3)2]-Hakon Hope, Marilyn M. Olmstead, Philip P. Power, Janet Sandell, and Xiaojie XuCite this: J. Am. Chem. Soc. 1985, 107, 14, 4337–4338Publication Date (Print):July 1,…
The electrochromic behavior of all-solid-state device, Au/a-WO3/LiF/Au has been studied as a function of the thickness of LiF as electrolyte. Thickness-dependent coloration and response time have been observed. The electrochromic coloration takes place at different stages, and a significant change in the transmittance…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAmbient-pressure superconductivity at the highest temperature (5 K) observed in an organic system: .beta.-(BEDT-TTF)2AuI2Hau H. Wang, Mark A. Beno, Urs Geiser, Millicent A. Firestone, Kevin S. Webb, L. Nunez, G. W. Crabtree, K. Douglas Carlson, Jack M. Williams, and Cite thi…
CaF2 films have been grown epitaxially on (100) and (111) Si substrates by molecular beam epitaxy. These films have been characterized by electron microscopy, reflection high-energy electron diffraction, Rutherford backscattering ion channeling, and back-reflection Laue x-ray diffraction. In addition, chemical etching…
For each of the compounds CsAu, LiAu, LiB, LiAl, LiGa, LiIn, LiTl, LiZn, LiCd, LiHg, NaIn, and NaTl the difference is calculated between the total energy of the compounds in the B2 (CsCl) and B32 (NaTl) crystal structures. The calculations are carried out over a pressure (P) range large enough to predict pressure-indu…
Steady-state and transient measurements of spin concentration have been carried out as a function of electrochemical charge injection in polypyrrole. A maximum of one spin per \ensuremath{\sim}10 pyrrole units has been observed for about 50% of the maximum charge. The data are interpreted in terms of quasiequilibrium…
A model is proposed for the atomic structure of the Al-Mn quasicrystal. Mn icosahedra are connected through their threefold axes, with a coordination number of seven and each bond defined by an octahedron. This Mn skeleton has icosahedral symmetry and its projections onto various planes have a self-similarity property…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMono- and dinuclear thiocarbonyl complexes of iron, including [CpFe(CO)(CS)]2, CpFe(CO)(CS)I, and CpFe(CS)2IRobert J. Angelici and Jan W. DunkerCite this: Inorg. Chem. 1985, 24, 14, 2209–2215Publication Date (Print):July 1, 1985Publication History Published online1 May 2002P…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUnimolecular reactions of nitrogen oxides (NO, N2O, NO2) and ammonia on rhodium and platinumG. A. Papapolymerou and Lanny D. SchmidtCite this: Langmuir 1985, 1, 4, 488–495Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 J…
Recent research into the formation, growth, and wear-off of pills is summarized. A sequential staining process is described allowing the identification of the pull-out/ roll-up mechanism of pill growth. A number of common pilling situations are considered with reference to five pilling rate differentials; if pill form…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular aspects of rubberlike elasticityJames E. MarkCite this: Acc. Chem. Res. 1985, 18, 7, 202–206Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985https://pubs.acs.org/doi/10.1021/ar00115a002https://doi.org/1…
An electrochemical study of hydroxide- and methoxide-ligated iron(III) tetraphenylporphyrins possessing ortho-phenyl substituents that block mu-oxo dimer formation has been carried out. Ligation by these strongly basic oxyanions promotes the formation of iron(IV)-oxo porphyrins upon one-electron oxidation. Further one…
Abstract Eleven olefins were oxidized with tris(2,4-pentanedionato)manganese(III) at the reflux temperature to give the corresponding 3-acetyl-2-methyl-4,5-dihydrofurans in good yields. The oxidation of 9-benzylidene-9,10-dihydroanthracene under the same reaction conditions did not produce the corresponding dihydrofur…
Abstract A new method of producing microcellular polyester composites is developed. The microcellular foam which is produced by supersaturating the polyester resin with nitrogen is cured by dielectric heating. The lightweight composite contains about 10 μm size bubbles. By substituting the microcells for the particula…