Materials Literature
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Abstract XPS was employed to detect the surface species deposited on an activated platinum electrode following cathodic polarization in deaerated 0.1 M (NH 4 ) 6 Mo 7 O 24 · 4H 2 O solution. At – 160 mV (saturated calomel electrode, SCE), evidence was found of the possible dissociation of polymolybdate to molybdate wi…
The nucleotide sequence of a 1689bp fragment of the Bacillus subtilis locus containing ptsX (a crr-like gene), ptsH (coding for HPr), and the 5'-end of ptsI (coding for Enzyme I) was determined. The deduced amino acid sequences of ptsH and the N-terminal part of ptsI were compared to those of Streptococcus faecalis an…
A novel photo-sensitized polymerization of pyrrole by the use of tris(2,2′-bipyridine)ruthenium(II) as a photo-sensitizer has been investigated in aqueous solution and in polymer matrix for the fabrication of fine conducting polymer patterns.
Novel accurate and stable measurement methods for the magnetostriction constant lambda /sub s/ and the induced anisotropy constant K/sub u/ are presented for amorphous wires. The two constants are theoretically expressed using a magnetization rotation model with or without tensile and compressive stresses. Values of f…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPredictions of cation distributions in AB2O4 spinels from normalized ion energiesRobin W. Grimes, Alfred B. Anderson, and Arthur H. HeuerCite this: J. Am. Chem. Soc. 1989, 111, 1, 1–7Publication Date (Print):January 1, 1989Publication History Published online1 May 2002Publis…
Physiological resting cells (as opposed to resting spores or cysts) have been identified for the following freshwater diatom species: Actinocydus normanii f. subsalsa, Asterionella formosa, Diatoma tenue var. elongatum, Fragilaria capucina, F.construens, F.construens var. venter, F.crotonenss, F.intermedia var. fallax…
Crystal Engineering Intermolecular Interactions Crystal Design Strategies Crystallization and Crystal Growth Polymorphism Multi-component Crystals Coordination Polymers.
The authors describe how the parameters defining hysteresis in the theory of hysteresis can be obtained from a set of experimental magnetization measurements. The hysteresis parameters can be calculated from the anhysteretic susceptibility at the origin, the coercivity, the remanence, and the coordinates of the hyster…
A mathematical model is described for continuous leader inception and breakdown of long gaps under positive switching impulses with critical time-to-crest. The model deals with rod, sphere, and conductor-plane gaps. It provides novel analytical expressions for continuous leader inception voltage, height of the final j…
The most successful texture control has been achieved in the production of grain oriented silicon steels. This paper reviews the historical background and current knowledge of texture control for ensuring the high performance of the Goss oriented silicon steel sheets. Special emphasis is placed on the important contri…
Excretion from the marine diatom Chaetoceros affinis was investigated in batch cultures. The rates of release of carbohydrates and amino acids per cell were higher in rapidly growing cells than in stationary phase cells. However, because photosynthesis per cell decreased significantly during nutrient depletion, excret…
The first twelve members of three new mesogenic homologous series have been characterized, each of which are composed of molecules possessing lateral alkyl chains. The n-alkyl 2,5-bis-(4-n-hexyloxy-benzoyloxy)-benzoates are purely nematic whereas both nematic and smectic behaviour is observed for the 4-cyano-4′-biphen…
Marine diatoms are shown to have on average one order of magnitude less silica per unit of biovolume than freshwater species. Silica content (pmol cell −1 ) increases linearly with biovolume ( µ m 3 ) in both marine (1og 10 [silica content] = 0.91 log 10 [biovolume] — 3.16; r = 0.92; P < 0.0001; N = 44) and freshwa…
A procedure for intercalating layered double hydroxides is described:power X-ray diffraction, i.r., and thermogravimmetric measurements confirm that for sebacic acid, toluene-p-sulphonic acid, and dodecyl sulphate intercalation takes place and results in gallery heights of 11.5,12.2, and 8.4 Å respectively.
A new electrooptic mode of operation of ferroelectric chiral smectic C liquid crystal displays (LCDs) is proposed and demonstrated. The effect, which is called the deformed helical ferroelectric (DHF) effect, is based on the deformation of the helical structure by weak electric fields. In the unbiased device the smect…
In this paper we consider the Cahn-Hilliard mathematical continuum model of spinodal decomposition (or phase separation) of a binary alloy. The phenomenological model is derived in section one. The existence theory for the Cahn-Hilliard equation is reviewed in section two. Various aspects and generalizations are surve…
The adsorption of CO on partially reduced CeO2[CeO2(573-H) and CeO2(673-H), CeO2 reduced in H2 at 573 and 673 K for 1 h, respectively] has been studied by Fourier-transform infrared spectroscopy (F.t.i.r.). The observation of formate species (771, 1329, 1369, 1558, 1587, 2852 and 2945 cm–1) formed by the reaction of C…
After the performance of clothing fabric in use has been satisfied to some extent, consumers seek better-quality, that is, more comfortable, fabrics. Fabric performance in relation to ‘better fitting to the human body’ is an essential requirement of clothing materials. From the mechanical-comfort viewpoint, textile pr…
The hydrodynamic force resisting the relative motion of two unequal drops moving along their line of centers is determined for Stokes flow conditions. The drops are assumed to be in near-contact and to have sufficiently high interfacial tension that they remain spherical. The squeeze flow in the narrow gap between the…
The TMEH Desk Edition presents a unique collection of manufacturing information in one convenient source. Contains selected information from TMEH Volumes 1-5--over 1,200 pages of manufacturing information. A total of 50 chapters cover topics such as machining, forming, materials, finishing, coating, quality control, a…