Materials Literature
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Diffuse reflectance Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning Auger microscopy, elemental analyses, BET surface area, and thermogravimetric analyses have been used to study metals and adsorbed organics on the surface of metal-loaded activated carbon materials. Metals such as c…
The SAE Fatigue Design Handbook covers, in a single source, current technologies and procedures on all of the major elements of fatigue design. Intended as a handbook for industrial use, this book describes the major elements of the fatigue design process and how those elements must be tied together in a comprehensive…
The attachment of high‐quality amorphous diamond (a‐D) coatings has been studied with respect to the hardness of the underlying layer. A novel intermediate‐layer technique is reported that enables thick a‐D coatings to be deposited successfully on all solids at room temperature. The Figure shows an a‐D film, on a 1.2…
This paper demonstrates the synthesis and characterization of poly(ether imide)s with ortho -linked main-chain units based on the bis(ether anhydride)s derived from catechol and 2,3-dihydroxynaphthalene. The polymerization was conducted in two steps via the formation of a poly(amic acid) precursor followed by thermal…
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The third order nonlinear optical susceptibilities X (3) of PbO-Bi 2 O 3 -B 2 O 3 glasses have been measured by the third harmonic generation (THG) method The borate network structure in the present glass system has also been investigated by using Raman and 11 B MAS NMR spectroscopies. The coordination state and the b…
Although the glycosidic fraction from the dried leaves of Gymnema sylvestre R. BR., gymnemic acid, was reported to be effective for diabetes, it showed little inhibitory activity on the increase of serum glucose level in oral glucose-loaded rats. From the glycosidic fraction, six triterpene glycosides, gymnemosides a,…
The short and long-term dielectric behavior of a number of representative electrical insulating systems is compared in the presence of space charge. Dielectric materials, used both in the communications and power application areas, are considered. In this overview, particular attention is given to thin inorganic films…
A new type of polymer–silica composite based on aramids of either linear or non-linear structure has been prepared successfullyvia the sol–gel process. The linear polyamide chains were prepared by the reaction of a mixture of m-phenylene and p-phenylene diamines and terephthaloyl chloride in dimethylacetamide. The non…
The complexes [Ag(AsPh 3 ) 4 ]BF 4 and [Au(AsPh 3 ) 4 ]BF 4 were prepared from AgBF 4 and 4 equivalents of AsPh 3 , and from equimolar quantities of [Au(AsPh 3 )Cl] and AgBF 4 and 3 equivalents of AsPh 3 , respectively, in dichloromethane solution. Single crystals of the two compounds are isomorphous (trigonal, space…
Zinc porphyrins have been widely used as surrogates for chlorophyll (which contains magnesium) in photosynthetic model systems and molecular photonic devices. In order to compare the photodynamic behaviour of Mg- and Zn-porphyrins, dimeric and star-shaped pentameric arrays comprised of free-base (Fb) and Mg- or Zn-por…
In this study, we attempted to prepare microspheres from a microbial biodegradable polyester, i.e. polyhydroxybutyrate (PHB) as a potential chemoembolization agent. The drug loaded PHB microspheres were prepared by a solvent evaporation technique, in which methylene chloride, distilled water, and polyvinyl alcohol wer…
A new multicamera soft x-ray detector system has been constructed for the pumped divertor phase of JET to provide improved spatial and temporal resolution. It is based on 12 compact pinhole cameras each of which uses a 35 element PIN photodiode array. The cameras are housed in a secondary vacuum and view the plasma th…
Investigation of structural and magnetotransport properties of ${\mathrm{L}}_{2\mathrm{/}3}$${\mathrm{A}}_{1\mathrm{/}3}$${\mathrm{MnO}}_{3}$ (A=Ca,Sr) oxides reveals a gradual increase of the magnetic frustration with bending of the Mn-O-Mn bonds. The relative strength of competing magnetic interactions is controlled…
BaCe 0.9 Nd 0.1 O 3-α (BCN) ceramic is known to be an excellent high-temperature proton conductor and is a candidate electrolyte for use in solid oxide fuel cells, hydrogen or steam sensors and steam electrolysers. In this work, the chemical stability of BCN was investigated systematically by combining XRD and DTA–TG…
The solution and solid-state structures of lanthanide complexes of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetryltetramethylenetetra(benzylphosphinate), L1a, and of its o-, m- and p-methoxybenzyl analogues (L2, L3, L4) have been investigated by NMR, relaxometry, crystallographic and photophysical methods. It has been…
In this paper, we present a new electromigration reliability diagnosis tool (iTEM) for CMOS VLSI circuits. Unlike previous electromigration reliability tools, iTEM can estimate the interconnect temperature rise due to joule heating and heat conduction from the substrate using a newly developed lumped thermal model. By…
A series of new layered inorganic−organic nanocomposites, with organic functionalities directly bonded to an inorganic framework via the Si−C bond, were prepared by a template sol−gel synthesis. These layered Al− and Mg−silsesquioxanes were precipitated at room temperature by addition of aqueous base to an alcohol sol…
Thin epitaxial BaTiO 3 (BTO) films having a high crystallinity and uniformity of grains were deposited on the SrTiO 3 (STO) substrates. When the oxygen pressure is from 0.04 to 70 Pa the lattice constant decreases from 4.1100 to 3.9972 Å and the orientation normal to the substrate changes from (001) to (100). The surf…
Type X collagen is a transient and developmentally regulated collagen that has been postulated to be involved in controlling the later stages of endochondral bone formation. However, the role of this collagen in these events is not yet known. In order to understand the function of type X collagen, if any, in the proce…