Materials Literature
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In this work, the alkaline digestion of chrome shavings with sodium hydroxide was studied. We have demonstrated that the best operating conditions would be about 0.5M for NaOH concentration and 15 minutes for the reaction. The process allows the recovery of proteins in the aqueous phase and the metallic salts in the s…
鉄鉱石では, Pisolite に続き,Hematite-Goethite の MarraMamba 鉱石の使用技術確立が当面の課題であろう。鉄鉱石ソースが,遠距離のブラジルに依存するところ少なくない事やフレートの変動の大きさ(Fig.14)を考えれば,柔軟で敏速な対応が使用技術に求められる機会も増えると予測される。石炭については,優良強粘結炭のソースは限定されており脱優良強粘結炭依存が最も大きな課題である。PCI増を含む,高炉でのコークス比低減や,将来的には, DIOS(Direct Iron Ore Smelting Reduction Process)43)のような直接還元法,コークス製造技術では,究極的には SCOPE21…
In an effort to simulate the human body for measuring contact pressure, a soft mannequin has been developed with the dimensions of the lower torso of a real female body. The mannequin contains a full-size bone skeleton, imitating soft tissue and skin. The imitated soft tissue is made from flexible polyurethane foam of…
ictor Veselago, in a paper 1 published in 1967, pondered the consequences for electromagnetic waves interacting with a hypothetical material for which both the electric permittivity, e , and the magnetic permeability, µ, were simultaneously negative. As no naturally occurring material or compound has ever been demonst…
During the formation of the CuZnO solid solutions, the foreign anions in anion-modified (a.m.-) oxides give rise to: (i) extended stacking faults of (002) ZnO lattice plane, which are occupied by copper ions in the form of small clusters; and (ii) vacant inner holes of the a.m.-ZnO crystal. The main part of copper ion…
Initial -induced atmospheric corrosion of iron has been followed in situ by three highly surface sensitive and complementary techniques, infrared reflection absorption spectroscopy, quartz crystal microbalance, and atomic force microscopy. The resulting corrosion attack was local in nature and resembled what are calle…
Despite extensive research on B adsorption and release from soils, mineral sources of B within natively high B soils remain poorly understood. The objectives of this study were to identify source minerals contributing to the continued B release after extraction of soluble B and to estimate B release rate from weatheri…
Depth profiles of D atoms and D 2 molecules in beryllium (Be), beryllium oxide (BeO), tungsten (W), chemically vapor deposited (CVD) tungsten carbide WC, and tungsten trioxide (WO 3 ) both implanted with D ions at energies in the range of several keV and exposed to a low energy (30–200 eV) D plasma have been determine…
Abstract Angle‐resolved x‐ray photoelectron spectroscopy (ARXPS) is a non‐destructive method to investigate the near‐surface structure of specimens with a flat surface. For interpretation of the electron intensities emitted from different depth regions, model calculations are necessary. Based on an earlier algorithm w…
It has been known that the ceria-zirconia solid solutions (Ce2Zr2O7+x, 0 ≤ x ≤ 1) have an excellent ability for oxygen absorption/release. The local charge states of cations in the CeO2-ZrO2 solid solutions have been studied by means of electron energy-loss spectroscopy (EELS) attached to a transmission electron micro…
A simple sonochemical method for the preparation of air-stable iron nanoparticles has been developed employing commercial edible oils as solvents. Upon annealing of the as-prepared material in argon, an air-stable ferromagnetic nanocrystalline material with a saturation magnetization comparable to that of bcc Fe is ob…
A putative bgl operon of Pectobacterium carotovorum subsp. carotovorum LY34 (Pcc LY34) was isolated. Sequence analysis of the 5,557 bp cloned DNA fragment (accession no. AY542524) showed three open reading frames (bglT, bglP, and bglB) predicted to encode 287, 633, and 468 amino acid proteins respectively. BglT and Bg…
A nanoscale slipped sandwich of Tb(10) is formed from the reaction of 5-bromo-3-methoxysalicylaldehyde (HL) with TbCl(3)x6H(2)O and Zn(OAc)(2)x2H(2)O. The compound also features an unusual example of a coordinated methylhemiacetal which is derived from HL.
Many useful physical and chemical properties of polymer materials can be damaged in the presence of radiation such as UV light, γ-irradiation and electron beams. To seek a good way to solve these problems, clay was introduced into the tri-block copolymer styrene–butadiene–styrene (SBS) matrix to form SBS/clay nanocomp…
A simple and rapid LC‐MS/MS method for simultaneous quantification of a mixture of the antineoplastic agent doxorubicin (Dox) and selected emesis suppressants, namely, lorazepam (Lor), metoclopramide (Met), ondansetron (Ond), and ranitidine (Ran), was developed. 4‐Phenyl‐4‐aminobutanoic acid was used as the internal s…
Crystallizations of manganese-tetra(4-carboxyphenyl)porphyrin chloride from different reaction environments led to the formation of new extended polymeric architectures sustained either by cooperative hydrogen-bonding or by self-coordination of the porphyrin units. In one mode the manganese ion in the metalloporphyrin…
The synthesis, characterization and mesomorphic properties of a new type of discotic liquid crystalline dimer bearing an electron-rich triphenylene discotic connected to an electron-deficient anthraquinone discotic via an alkyl chain spacer are reported. This donor-sigma-acceptor type molecule displays a columnar meso…
The primary sequences of human and mouse tuftelin are 89% identical. Both proteins comprise 390 amino acids and produce an acidic protein with an isoelectric point of 5.7, and an unmodified molecular weight of 44 kD. Using fluorescent-tagged tuftelin and amelogenin plasmid constructs we saw little evidence that these…
An anode micro model of a solid oxide fuel cell (SOFC) is presented, which was improved from that previously developed [ J. Electrochem. Soc. , 148 , A388 (2001)]. The model takes into account all possible polarizations, governing the complex interdependency among the transport phenomena, electrochemical reaction, and…
Polyoxometallates (POM), i.e., metal oxide clusters of mainly tungsten are effective homogeneous photocatalysts for the mineralization of organic pollutants. POM are, at least, as effective as the well studied TiO 2 . OH ⋅ radicals formed by the reaction of the photo‐excited polyoxometallates with H 2 O, appear to pla…