Reaction of Vanadium Compounds with Ceramic Oxides
Abstract not Available.
Materials Literature
文献浏览
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Experimental artifacts and determination of accurate Py values
Recently the Py solvent scale has been introduced and a large body of data has been generated using fluorescence measurements. Numerous problems exist in the correct determination of these values, including instrumental and chemical artifacts. Among the instrumental problems associated with correct Py assignments are…
Irradiation Embrittlement of Reactor Pressure Vessel Steels: Mechanisms, Models, and Data Correlations
A model of irradiation embrittlement is described for predicting the 41-J Charpy V-notch temperature shifts (ΔT) as a function of metallurgical variables and neutron exposure conditions. This forecasting procedure combines semi-empirical physical models with statistical analyses of test and power reactor data, and cal…
Aging of fe-doped pzt ceramics and the domain wall contribution to the dielectric constant
The time dependence of the complex dielectric constant ε of ferroelectric ceramics is well known as aging which is ascribed by most authors to a modification of the 90°-domain walls. Measurement of aging of Fe-doped PZT ceramic (rhombohedral) and Cr-doped BT ceramic (tetragonal), show that aging in these ceramics can…
Actinide thermodynamic predictions. 3. Thermodynamics of compounds and aquo-ions of the 2+, 3+, and 4+ oxidation states and standard electrode potentials at 298.15 K
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTActinide thermodynamic predictions. 3. Thermodynamics of compounds and aquo-ions of the 2+, 3+, and 4+ oxidation states and standard electrode potentials at 298.15 KSteven G. Bratsch and J. J. LagowskiCite this: J. Phys. Chem. 1986, 90, 2, 307–312Publication Date (Print):Jan…
Action of Xylanases on Chemical Pulp Fibers Part II : Enzymatic Beating
Two chemical bleached pulps were treated with a crude enzyme mixture in the presence of HgCI2, (1 mM). Such treatment inhibited endo-cellulases. Xylans were- thus subjected to selective in-situ hydrolysis. The enzyme-treated pulps car. be compared to slightly beaten pulps. The modified fibers show external fibrillatio…
Knudesen diffusion in random assemblages of uniform spheres
Abstract Experimental measurements have been conducted of Knudsen diffusion through a model porous medium fabricated by the pelleting of monodisperse silica spheres. Tortuosity factors for this random‐assemblage‐of‐spheres porous solid are calculated and compared with values obtained from both theory and measurements…
The preparation and physicochemical characterization of an injectable form of reconstituted, glutaraldehyde cross‐linked, bovine corium collagen
Pepsin-solubilized bovine corium collagen was purified, reconstituted, and treated with various levels of glutaraldehyde. Treatment of suspensions of fibrillar collagen with low concentrations of glutaraldehyde appeared to have little effect on the gross morphology of fibrils, as judged by electron microscopy, but did…
Harmonics from Transformer Saturation
Saturation effects in transformers and shunt reactors can produce harmonics in power systems. Their magnitude can sometimes be found with an electromagnetic transients program, by going from an approximate linear ac steady-state solution directly into a transient simulation in which the nonlinear effects are included.…
An analytical function for absorption correction
A new analytical function is proposed for absorption correction. It is expressed by surface harmonics with polar angles that specify the primary and secondary beam directions. This function has an advantage over Fourier expansion because it is rotationally invariant. Two empirical, methods are used to determine the ex…
Composite Materials: Testing and Design (Seventh Conference)
Description Emphasizes toughness as related to damage tolerance of advanced composites. Discusses the problems researchers face in characterizing and analyzing the complex failure mechanisms associated with stress concentration and delaminations. Contains several papers on multi-dimensionally reinforced materials in t…
High-energy resolution electron spectrometer for 1-nm spatial analysis
A Wien Filter electron spectrometer has been successfully combined with a dedicated scanning transmission electron microscope (STEM) to obtain an energy resolution of 140 meV with a specimen collection semiangle of 25 mR at 100 keV. A cold-field emission electron source is used to produce a 0.35–10-nm-size electron be…
Solvability condition for needle crystals at large undercooling in a nonlocal model of solidification
We show explicitly that, in a realistic model of diffusion-controlled dendritic solidification, Ivantsov's continuous family of steady-state needle crystals is destroyed by the addition of surface tension. Our starting point is the exact integro-differential equation for the one-sided model, in two dimensions, in a mo…
Melt rheology of high density polyethylene/polyamide‐6 blends
Abstract Commercial high density polyethylene and polyamide‐6 (PA) resins were melt blended in the Brabender Plasticorder twin‐screw extruder. The blends containing zero to 30 wt percent of polyamide‐6 were examined in dynamic and steady state shear at 150, 200, and 250°C. The Theological test results are discussed in…
Near-edge structure in electron-energy-loss spectra of MgO
Electron-energy-loss spectra of all core-level absorption edges of MgO microcrystals were recorded in the transmission mode using 60-keV electrons. The low-noise signal attained at a resolution of 0.5 eV reveals details of fine structure in the near-edge region. The spectra obtained were analyzed by the application of…
Cell surface characteristics of coagulase-negative staphylococci and their adherence to fluorinated poly(ethylenepropylene)
The ability of 21 nonencapsulated and 15 encapsulated coagulase-negative staphylococci (CNS) to adhere to xylene in xylene-water emulsions and to fluorinated poly(ethylenepropylene) (FEP) films revealed remarkable differences. Nonencapsulated CNS strains adhered well to FEP, whereas their adherence to xylene ranged wi…
A New Actuator of a Joint Mechanism Using TiNi Alloy Wire
A new actuator of a joint mechanism is proposed, composed of two TiNi alloy wires. First, the static and dynamic properties of the TiNi alloy wire that were not known are analyzed. Then the mathemati cal model of the actuator is induced. Next, the control sys tems of the actuator are synthesized by pulse width modu la…
Synthesis of fiber-reinforced SiC composites by chemical vapor infiltration
Fabrication de composites par infiltration et depot chimique en phase vapeur de SiC dans une structure fibreuse de SiC. L'utilisation d'un gradient thermique et d'un ecoulement gazeux force permet de reduire la duree d'infiltration. On etudie les proprietes mecaniques de ces composites
Si(001)-2×1 Single-Domain Structure Obtained by High Temperature Annealing
Si(001)-2×1 single-domain structure has been observed by reflection high-energy electron diffraction (RHEED) after a substrate annealing at a temperature of 1000°C for 20 min. This implies surface steps have been changed from monatomic layer to biatomic layer height by the annealing. It was found that the single-domai…
Bis axially coordinated (phthalocyaninato)ruthenium(II) compounds
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBis axially coordinated (phthalocyaninato)ruthenium(II) compoundsWolfram Kobel and Michael HanackCite this: Inorg. Chem. 1986, 25, 1, 103–107Publication Date (Print):January 1, 1986Publication History Published online1 May 2002Published inissue 1 January 1986https://pubs.acs…