Phylogenetic analysis of the Rapaninae (Neogastropoda: Muricidae)
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Materials Literature
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Decomposition of Chlorinated Hydrocarbons in Aqueous Solutions by Ultrasonic Irradiation
Abstract Trichloroethylene, tetrachloroethylene, 1,1,1-trichloroethane, chloroform and carbon tetrachloride in dilute aqueous solutions were rapidly decomposed to chloride anions, hydrogen, carbon monoxide and carbon dioxide by ultrasonic irradiation.
High Power Rare Earth Magnetostrictive Materials
Magnetic materials capable of producing strains greater than 10 -3 have received con siderable attention over the last few years. This is partly due to recent interest in fields such as de formable surfaces, active vibration control, and precision machining, where large forces and small displacements are required, and…
Analysis and design of transparent conductive coatings and filters
Four types of transparent electrically conductive filters commonly used for a variety of applications are (1) a free-standing conducting inductive mesh, (2) a substrate coated with a conducting inductive mesh, (3) a conducting substrate, and (4) a substrate coated with a continuous conducting coating. Each can be desi…
Crystallinity of Partially N -Acetylated Chitosans
In order to search for a chitosan with low crystallinity, partially N-deacetylated chitins (PDC) and partially N-acetylated chitosans (PAC) with a low degree of N-acetylation (DAc) were examined by X-ray powder diffraction measurements. Three PDC samples, having less than 30% DAc and prepared by solid-state deacetylat…
Mechanism of interfacial interactions in particulate filled composites
A stress analysis was carried out in order to determine the local stress distribution around spherical particles in particulate filled composites. The results were introduced into the criteria for micromechanical deformations and the conditions for the initiation of each mechanism were calculated. Results of the calcu…
Paraelectric and ferroelectric phases of betaine phosphite: Structural, thermodynamic, and dielectric properties
The paraelectric and ferroelectric phases of betaine phosphite [BPI: (CH3)3 NCH2COO H3PO3] single crystals have been studied. The structure of BPI was determined at room temperature using x-ray and elastic neutron diffraction. Details of the ferroelectric transition and various low temperature properties were investig…
An upgrading process through cavitation and surfactant
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn upgrading process through cavitation and surfactantJiunn Ren Lin and Teh Fu YenCite this: Energy Fuels 1993, 7, 1, 111–118Publication Date (Print):January 1, 1993Publication History Published online1 May 2002Published inissue 1 January 1993https://pubs.acs.org/doi/10.1021…
Estimation of Delayed Fracture Property of Steels
高力ボルトの高強度化の必要性は大きいのであるが,その遅れ破壊はいまだ理論的な解明がなされておらず,その必要十分な予測ができない現状にある。そのために,実験室的に耐遅れ破壊特性の優れた高強度高力ボルトであっても,容易に実用化できない。本研究は,この課題解決のために行ったもので,得た結論の要点は以下のものである。鋼中の微量水素の定量化を可能にし,試験片中の水素量とその遅れ破壊との関連を求め,一定の応力状態(P/Pf=一定)では各鋼材固有の限界水素量HTが存在することを確かめた。この試験で求められる対象鋼材の限界水素量HTは,別途水素モニターによる対象鋼材の使用環境における侵入水素量あるいは侵入の容易さを知ることによって,対象鋼材の実環…
Evaluation of digital filters for rejecting discrete spectral interference in on-site PD measurements
A critical study of the performance of several digital filters for rejecting discrete spectral interference (DSI) in partial-discharge (PD) testing is reported. The filters are evaluated with particular reference to distortion introduced on successive PD pulses. A digital filtering method based on a cascaded second-or…
Detection and location of internal defects in the insulation of power transformers
With the development of fast, and low-cost analog-digital converters (ADCs) and new mathematical procedures for waveform description, e.g., time encoded signal processing and recognition (TESPAR), novel approaches to detect and locate internal defects in the insulation of power transformers become feasible if the foll…
Investigation of magnetizing inrush current in transformers. I. Numerical simulation
A simple method for simulating magnetizing inrush currents in power transformers using real-time measurements is proposed. The method is based on a simplified model for representing the inrush current under different loading conditions. A digital simulation method using a PC-AT microcomputer is also proposed. Transfor…
Spinodal decomposition for the cahn-hilliard equation
The Cahn-Hilliard equation is a fourth-order parabolic partial differential equation that is one of the leading models for the study of phase separation in isothermal, isotropic, binary mixtures, such as molten alloys. When a spatially homogeneous alloy is rapidly quenched in a physical experiment, a fine-grained deco…
An Alternative Approach to the Objective Measurement of Fabrics
Objective measurements of fabric mechanical properties have great potential for quality control of clothing materials. However, access to the requisite instruments still remains a problem for many potential users due to their high cost. Therefore, a scheme for measuring all the relevant property parameters on an Instr…
Single-crystal studies of the zero-field splitting and magnetic exchange interactions in the magnetic susceptibility calibrant mercury cobalt-thiocyanate (HgCo(NCS)4)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSingle-crystal studies of the zero-field splitting and magnetic exchange interactions in the magnetic susceptibility calibrant mercury cobalt-thiocyanate (HgCo(NCS)4)David Nelson and Leonard W. Ter HaarCite this: Inorg. Chem. 1993, 32, 2, 182–188Publication Date (Print):Janu…
Entry and spreading of alkane drops at the air/surfactant solution interface in relation to foam and soap film stability
For droplets of hydrocarbon oil dispersed in surfactant solution to be effective in reducing foam stability it is necessary for the droplets to be capble of entering the air/solution interfaces of the lamellae within the foam. If entry is possible, then soap film rupture (hence foam destruction) can, in principle, occ…
Photoisomerization and thermal isomerization behavior of azobenzene derivatives in liquid-crystalline polymer matrixes
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoisomerization and thermal isomerization behavior of azobenzene derivatives in liquid-crystalline polymer matrixesTakeo Sasaki, Tomiki Ikeda, and Kunihiro IchimuraCite this: Macromolecules 1993, 26, 1, 151–154Publication Date (Print):January 1, 1993Publication History Pu…
Interface dynamics and banding in rapid solidification
Rapid-solidification experiments on metallic alloys in the last decade have provided widespread observations of a novel ``banded structure.'' We report the results of numerical and analytical studies of the interface dynamics underlying the formation of this structure in a model of directional solidification which inc…
Kinetics of toluene hydrogenation on a supported nickel catalyst
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of toluene hydrogenation on a supported nickel catalystLars Peter Lindfors and Tapio SalmiCite this: Ind. Eng. Chem. Res. 1993, 32, 1, 34–42Publication Date (Print):January 1, 1993Publication History Published online1 May 2002Published inissue 1 January 1993https://…
Optical properties of a metal island film close to a smooth metal surface
Bright colors have been observed when a metal island film is deposited on top of a silver mirror with a separating quartz layer. For spacer layer thicknesses that are varied from 0 to 140 nm, the visual appearance changes from blue/black to a series of brilliant spectrumlike colors. The sequence is repeated similarly…