Materials Literature
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The nucleoside antibiotic nikkomycin inhibited the formation of β-chitin spines by the diatom Thalassiosira fluviatilis, and slowed its growth rate, at a minimum inhibitory concentration of 4 µM. The resulting chitin-free cells sedimented much more rapidly in the cultures than did control cells. The uptake of nikkomyc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGeneralized molecular orbital calculations on transition-metal dioxygen complexes: model for manganese porphyrinJames E. Newton and Michael B. HallCite this: Inorg. Chem. 1985, 24, 16, 2573–2577Publication Date (Print):July 1, 1985Publication History Published online1 May 20…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of (tetrabenzoporphinato)ironNagao Kobayashi, Masami Koshiyama, and Tetsuo OsaCite this: Inorg. Chem. 1985, 24, 16, 2502–2508Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985https://pubs.acs.org/…
In several inorganic linear chain compounds a metal to insulator transition occurs leading to an incommensurate charge density wave (CDW) state. The CDW's are pinned by impurities. The pinning, however is weak and the response to d.c. and a.c. electric fields is dominated by the collective mode. The main features of t…
NMR measurements of the $^{1}\mathrm{G}_{4}$ excited level (9700 ${\mathrm{cm}}^{\mathrm{\ensuremath{-}}1}$) of trivalent praseodymium in lithium-yttrium fluoride are reported. They were made by indirect optical nuclear double resonance, where a narrow-band optical excitation, which connects the $^{3}\mathrm{H}_{4}$ g…
The capabilities of a facility, brought into service to collect data on magnetohydrodynamic (MHD) effects pertinent to liquid-metal-cooled fusion reactor blankets, are presented. The facility, designed to extend significantly the existing data base on liquid metal MHD, employs eutectic NaK as the working fluid in a ro…
The behavior of sulfur in aluminum chloride‐N‐(n‐butyl)pyridinium chloride was studied using Raman spectroscopy and electrochemical techniques. In basic (BPC‐rich) melts, sulfur can be reduced to sulfide, probably in the form of an species. No oxidation to positive oxidation states of sulfur is observed in basic melts…
The MHD pressure drop in the second wall orifice which connects the first wall cooling channel and the header in one of the BCSS blankets is discussed. Though the second wall is thin, the pressure drop in the orifice can be very large because of leakage current effects. If eddy currents leak and do not have to pass th…
The paper presents a comparison of partial discharge (PD) measurements taken on 140 large power transformers using radio-influence voltage (RIV) meters calibrated in pV according to NEMA 107 Standard and also with the aid of wide-band and narrow-band PD detectors calibrated in pC according to IEC Publication 270. Resu…
Abstract 5,11,17,23‐Tetra‐ tert ‐butyl‐25,26,27,28‐tetrahydroxy‐2‐oxocalix[4]arene ( 4a ), 5,11,17,23,29,35‐hexa‐ tert ‐butyl‐37,38,39,40,41,42‐hexahydroxy‐2‐oxocalix[6]arene ( 4b ), and octa‐ tert ‐butyl‐octahydroxy‐trioxocalix[8]arene ( 4c ) were synthesized via 4‐ tert ‐butylcalix[4]‐, [6]‐ and [8]arenes from 4‐ te…
Abstract Elelectrically conducting polymers have been synthesized from completely conjugated bisphthalonitrile monomers. The monomers melt and are thermally polymerized at 260–300°C in air and then are converted into conductive materials by further processing at elevated temperatures in an inert atmosphere. Because th…
The effect of chemical etching by H2S04/H202/H20 (5/1/1) mixtures and of mechanopolishing by bromine-methanol diluted solution on GaAs (001) and InP (001) substrates for molecular beam epitaxy (MBE) has been studied using X-ray photoelectron spectroscopy (XPS). The final rinse in running deionized water does not produ…
Si NMR spin-lattice relaxation times have been measured for the two 2:1 layered phyllosilicates, sepiolite and rectorite. In sepiolite, it is shown that water contained within the structural channel provides a Si-H dipolar contribution to Si spin-lattice relaxation. In rectorite, hydrated interlayer paramagnetic catio…
A new conceptual blanket design for a fusion reactor produces fissile material for fission power plants. Fission is suppressed by using beryllium, rather than uranium, to multiply neutrons and also by minimizing the fissile inventory. The molten-salt breeding media (LiF+BeF2+ThF4) is circulated through the blanket and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbon monoxide and nitrogen oxide (NO) adsorption on nickel oxide (NiO): a spectroscopic investigationE. Escalona Platero, S. Coluccia, and A. ZecchinaCite this: Langmuir 1985, 1, 4, 407–414Publication Date (Print):July 1, 1985Publication History Published online1 May 2002P…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFlow properties of foam with and without solid particlesNandu N. Thondavadi and Robert LemlichCite this: Ind. Eng. Chem. Process Des. Dev. 1985, 24, 3, 748–753Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985http…
A one-volume reference of techniques used by the metallurgical microscopist. Contains an introduction to the instrumentation and methods of scanning electron microscopy with historical as well as state-of-the-art methodologies. Theory and practice are combined so that the reader can easily understand and duplicate the…
Abstract An interpretation of the Raman and infrared phonon spectra in Bi 12 GeO 20 and Bi 12 SiO 20 crystals is proposed. Some quasi‐molecular units are distinguished due to the presence of heavy bismuth atoms in the crystal lattice. The frequencies of motion and the force constants of the tetrahedral GeO 4 and SiO 4…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on carbonylating organoiron alkyl complexes (.eta.-C5H5)(CO)(L)FeRT. C. Forschner and A. R. CutlerCite this: Organometallics 1985, 4, 7, 1247–1257Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985https://p…
The domain structure immediately after heat treatment was investigated by the nematic liquid crystal method. Just below T c very fine domain patterns narrower than 0.5 µm in width were observed. With time, the domain pattern gradually becomes coarse. Mean domain width grows in proportion to the time elapsed since the…