Characterization of pulp refiners by a C-factor
Keywords Disk refiners, Conical refiners, Cellulose fibers, Refining, Process variables, Energy, Fineness, Fiber length, Grooves, Bars, Impact, Equations
Materials Literature
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Surface modified polysulfone hollow fibers. III. Fibers having a hydroxide group
Abstract Polysulfone ultrafiltration hollow fibers were chemically modified on the surfaces with propylene oxide and Friedel‐Crafts catalysts. A peak at 1.6 ppm was observed in H 1 ‐NMR spectrum of the modified fibers at 45°C, while the peak was not observed at 27°C measurements. The peak was attributed to a hydroxide…
Elastic Properties of Three-dimensional Angle-interlock Fabric Preforms
An Investigation is reported in which a model based upon fabric geometry was developed to predict the thread-volume fraction and elastic constants of three-dimensional angle-interlock fabric composites. The architecture of this model was investigated by identifying the structural and geometric parameters. The structur…
Effects of Chromate and Vanadate Anions on the Hot Corrosion of Preoxidized Ni by a Thin Fused Na2 SO 4 Film at 900°C
The effects of chromate and vanadate anions on the hot corrosion of preoxidized Ni by a thin fused film in an gas atmosphere at 900°C were investigated by use of a sodium sensor and an oxygen probe. The chromate anion suppressed the sulfidation of Ni probably by precipitating solid from the melt. However, the corrosio…
Effect of Grain Size and Poling on the Fracture Mode of Lead Zirconate Titanate Ceramics
The fracture mode of lead zirconate titanate (PZT) ceramics at room temperature is investigated as a function of grain size. The fracture mode is almost intergranular at small grain size and changes to predominantly transgranular at large grain size. Application of an electric field (poling) causes a change in the fra…
Advanced electronic packaging materials
This proceeding contains papers on advanced electronic packaging materials. Included are the following topics: Optoelectronics, Polymers, Composites, Aluminum Nitride, and Metallization.
Electrochemical Codeposition of Gallium and Arsenic from a Room Temperature Chlorogallate Melt
An electrodeposition process by which gallium arsenide can be formed at room temperatures is reported. Gallium and arsenic can be codeposited from a room temperature melt comprised of and ImCl (1‐methyl‐3‐ethylimidazolium chloride) and an solute. Codeposition is studied over a potential range of 0 to −2V relative to a…
Detection of Joule heating before dielectric breakdown in polyethylene films
Local Joule heating in polyethylene films was detected at room temperature before dielectric breakdown under DC field. When a high-temperature point appeared in a film, the conduction current increased with time. The final breakdown occurred at the point of the highest temperature. This concurrence of the breakdown po…
Recent advances in the chemistry of gas phase transition metal clusters
Abstract
Recent advances in the one- and two-dimensional magnetic measurement technique for electrical sheet steel
The problems connected with measuring the magnetic properties of electrical sheet steel under the condition of one-dimensional (alternating) and two-dimensional excitation (circular, elliptic, and alternating with rotation of the direction) are surveyed. Regarding the classical case of one-dimensional excitation, the…
Time-resolved observation of isothermal phase transition of liquid crystals triggered by photochemical reaction of dopant
A mixture of 4-butyl-4′-methoxyazobenzene (BMAB) and 4-n-pentyl-4′-cyanobiphenyl (5CB)([BMAB]/[5CB]= 0.03) undergoes an isothermal phase transition on pulse irradiation at 355 nm (10 ns fwhm), in which the relaxation from the nematic to the isotropic phase was completed within ∼ 100 ms as shown by time-resolved birefr…
Molecular-beam studies of methanol partial oxidation on Cu(110)
A thermal molecular-beam system has been used to examine the oxidative dehydrogenation of methanol on the Cu(110) surface. The initial sticking probability for oxygen is 0.21 (±0.01) at room temperature and shows a near linear dependence of sticking coefficient on atomic coverage due to an island growth mechanism with…
Rheology of weakly interacting colloidal particles at high concentration
The paper describes an experimental study of the rheology of concentrated latex under conditions where a secondary miminum in the interparticle pair potential is expected. Particular attention is given to the Bingham stress σB derived from steady-shear-flow data, which is taken as a measure of the additional or extra…
Power losses under sinusoidal, trapezoidal and distorted induction waveform
A setup has been developed by which one can measure magnetic power losses under arbitrary induction waveforms in the frequency range 1 Hz>
Diffusion of Xe in UO2
In this paper we present the results of atomistic simulation studies regarding aspects of the diffusion behaviour of Xe in UO2. The effects of a variable lattice stoichiometry and the charge state of the Xe are considered. It is found that although the sites at which Xe atoms are trapped differ markedly with stoichiom…
A novel series of heterotrinuclear complexes with a tris(dimethylglyoximato)metal( II ) anion as bridging ligand. Structure of the Fe III Cu II Fe III complex with S= 9/2 ground state
A series of linear heterotrinuclear complexes with a tris(dimethylglyoximato) metal(II) as bridging ligand, [LFeIII{µ-(dmg)3MII}FeIIIL](ClO4)2(M = Zn, Cu, Ni, Co, Fe, Mn), where L represents the cyclic triamine 1,4,7-trimethyl-1,4,7-triazacyclononane, has been synthesized and characterized by X-ray crystallography and…
Charge-transfer complexes of tetracyanoethylene with cycloalkanes, alkenes, and alkynes and some of their aryl derivatives
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharge-transfer complexes of tetracyanoethylene with cycloalkanes, alkenes, and alkynes and some of their aryl derivativesJohn E. Frey, Anne M. Andrews, Daniel G. Ankoviac, Douglas N. Beaman, Louis E. Du Pont, Thomas E. Elsner, Susan R. Lang, Marian A. Oosterbaan Zwart, Rona…
Solubility of hydrogen in metals
Abstract
Thermodynamic investigation of the CaO-Al_2O_3-CaCO_3-H_2O closed system at 25℃ and the influence of Na_2O
The solubilities of calcium hemicarboaluminate, calcium monocarboaluminate and calcium tricarboaluminate have been determined and the equilibrium phase diagram for the CaO-Al 2 O 3 -CaCO 3 -H 2 O closed system at 25°C has been calculated. Six isothermally invariant points have been located involving six stable hydrate…
A facile preparation of a self-doped conducting polymer
A self-doped conducting polymer having alkanesulphonic acid groups on polythiophene has been directly synthesized from sodium 3-(3-thienyl)propanesulphonate 3 by chemical polymerization with FeCl3 in an aqueous medium; the resulting acid form of this polymer after work-up shows highly self-doped behaviour both in wate…