Materials Literature
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For a given number of skeletal atoms, the π-electron count of an unsaturated heterocycle can be modified by the incorporation of heteroatoms from different periodic groups. Sulfur and nitrogen are particularly effective in this regard, as their high electronegativity can stabilize electron-rich π-systems. A variety of…
The genes coding for two structurally different isocitrate dehydrogenase isozymes (IDH-I and IDH-II) of a psychrophilic bacterium, Vibrio sp. strain ABE-1, were cloned and sequenced. Open reading frames of the genes (icdI and icdII) are 1,248 and 2,229 bp in length, respectively. The amino acid sequences predicted fro…
We consider the energy dependence of the Mn 3s and 3p multiplets from gas-phase atomic Mn and crystalline ${\mathrm{MnF}}_{2}$ and ${\mathrm{KMnF}}_{3}$ over the range from x-ray photoelectron spectroscopy (XPS) energies down to energies near threshold. First comparing atomic and solid-state spectra for these multiple…
Summary Fouling from milk fluids is a severe industrial problem which reduces the efficiency of process plant. The chemistry of fouling has been thoroughly investigated but the sequence of events that occur is not yet clear. Deposit contains both protein and minerals. Experiments have been carried out to determine the…
The choice of the perturbation wave form is of crucial importance for reliable electrochemical impedance spectroscopy measurements based on the fast Fourier transformation. Using numerical simulation, arguments and results are presented for the choice and the optimization of a perturbation signal constructed as a supe…
Immobilized polyethylene glycol (PEG) reduced the amount of bovine serum albumin (BSA) adsorbed on polyvinyl alcohol (PVA) hydrogel, but did not reduce the platelet reactivity of the hydrogel surface. PEG, molecular weight (MW) 2000 or 5000, with or without a monomethoxy end group, was covalently bound to glutaraldehy…
Copper has 44% higher conductivity than aluminum, making copper an attractive interconnect metal for advanced multilevel interconnections in integrated circuits (IC) and multichip modules (MCM). Since sputter deposition is widely used in IC and MCM fabrication, the properties of sputtered copper films are investigated…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOptically active phthalocyanines and their circular dichroismNagao Kobayashi, Yayoi Kobayashi, and Tetsuo OsaCite this: J. Am. Chem. Soc. 1993, 115, 23, 10994–10995Publication Date (Print):November 1, 1993Publication History Published online1 May 2002Published inissue 1 Nove…
The morphology and growth process of oxide precipitates in Czochralski silicon have been studied with prolonged thermal treatments up to 700 h at intermediate temperatures (700–900 °C). It was found with transmission electron microscopy observation that (i) the morphology of precipitates changes from platelet to aggre…
The exchange hardening of nanostructured two-phase systems composed of an aligned hard phase and a soft phase with high magnetization is investigated using a micromagnetic approach, which accounts for interactions between the soft regions. For Sm/sub 2/Fe/sub 17/N/sub 3/(2.5 nm)/Fe/sub 65/Co/sub 35/(9 nm) multilayers,…
Domain observations were made on Fe- and Co-based amorphous magnetic wires that exhibit a large Barkhausen discontinuity during flux reversal. Domain patterns observed on the wire surface were compared with those found on a polished section through the center of the wire. It was found that the Fe-based wire consists o…
Abstract Most aromatic polyimides and copolyimides show a β relaxation process below their α relaxation processes in dynamic mechanical and dielectric measurements. The origin of this β relaxation has been under active discussion. In order to gain a better understanding of the origin of the β relaxation process, the d…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural investigations of gold (Au55) organometallic complexes by x-ray powder diffraction and transmission electron microscopyW. Vogel, B. Rosner, and B. TescheCite this: J. Phys. Chem. 1993, 97, 45, 11611–11616Publication Date (Print):November 1, 1993Publication History…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of bimodal molecular weight distribution on the polymer brushN. Dan and M. TirrellCite this: Macromolecules 1993, 26, 24, 6467–6473Publication Date (Print):November 1, 1993Publication History Published online1 May 2002Published inissue 1 November 1993https://pubs.acs.…
The pyrometallurgical processing of spent fuel from the integral fast reactor (IFR), an advanced reactor under development at Argonne National Laboratory, will generate a chloride salt waste containing the alkali‐metal, alkaline‐earth, and some of the rare‐earth fission products. Salt‐occluded zeolite A, formed by equ…
The increase in iron-loss in soft magnetic materials due to the modulation depth in pulse width modulation (PWM) inverters is analyzed. In particular, the specific loss variations with different modulation indexes are measured, both in wound cores realized with high quality grain oriented magnetic material, and in ind…
Hydrogen-bonded ferroelectric liquid-crystalline complexes have been obtained by self-assembly of S-(+)-4-(2-methylbutoxy)benzoic acid and trans-4-alkoxy-4'-stilbazoles. Chiral smectic C phases are induced by the formation of the hydrogen bonds between the chiral nonmesogenic benzoic acid and the achiral stilbazoles.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyoxoanions derived from tungstosilicate (A-.beta.-SiW9O3410-): synthesis, single-crystal structural determination, and solution structural characterization by tungsten-183 NMR and IR of titanotungstosilicate (A-.beta.-Si2W18Ti6O7714-)Yin Lin, Timothy J. R. Weakley, Brian…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and structure of bis[hydrotris(3,5-dimethylpyrazolyl)borato]samarium(II), Sm[HB(3,5-Me2pz)3]2, and the product of its reaction with azobenzeneJosef Takats, Xing Wang Zhang, Victor W. Day, and Todd A. EberspacherCite this: Organometallics 1993, 12, 11, 4286–4288Publ…
Premastered optical disk by superresolution (PSR) for practical use has been achieved for the first time. The PSR disk has a phase-change material Ge 2 Sb 2 Te 5 with stoichiometric composition. Superresolution results from a high contrast ratio of reflectance in the light spot between highly reflective crystal region…