Materials Literature
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。
We present a detailed analysis of anharmonic effects on the viscous and elastic properties of various systems with one-dimensional order. We show that the nonlinear coupling of the velocity field to thermally excited undulation modes causes four of the five viscosities in these uniaxial systems (including one, ${\ensu…
The energy loss per cycle has been measured as function of frequency from 0 to 80 Hz in low-carbon lamination steel. Under sine flux excitation, the loss per cycle is linear with frequency, as predicted by simple models but unlike measured results on oriented silicon-iron. Numerical calculations based on a modificatio…
ABSTRACT The development of the mucilage on the outer surface of Navicula confervacea (Kütz.) Grun., a raphed, filamentous diatom, was studied with scanning electron microscopy. This nonstructural cell wall material, present on the surface after critical‐point drying and absent after acid cleaning, was of two types: s…
A new statistical theory of domain wall pinning by a random array of inhomogeneities is outlined. Each pin site is characterized by its maximum pinning force f. The critical field Horequired to unpin a 180° wall, in the absence of thermal activation, is found to be proportional to f2ρ/γ where ρ is the volume density o…
Abstract In an effort to elucidate the structure of the low‐temperature phase of PTFE, a spectroscopic study of the effect of progressive irradiation on the low‐frequency infrared spectrum was undertaken. Previous infrared and Raman measurements indicated that irradiation of PTFE decreases its crystalline content, res…
ABSTRACT Three species of Navicula are described from light and scanning electron microscopy. Navicula bottnica Grunow, has not previously been illustrated at the SEM level, nor has it previously been reported to form colonies, but the cells appear to be identical to Schizonema smithii C. Agardh (sensu van Heurck) and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDevelopment of a new hybrid material (ARALL) for aircraft structuresLaurens B. VogelesangCite this: Ind. Eng. Chem. Prod. Res. Dev. 1983, 22, 3, 492–496Publication Date (Print):September 1, 1983Publication History Published online1 May 2002Published inissue 1 September 1983h…
Abstract The reaction kinetics and physical transport processes governing the thermal dehydration of solid K 2 CO 3 ·3/2H 2 O particles were investigated. Isothermal reaction rate data were gathered using a thermogravimetric balance in which narrowly‐sized K 2 CO 3 ·3/2H 2 O crystals were dehydrated under a water vapo…
Book Review| Online September 01 1983 Manual on Management of the Burn Patient Manual on Management of the Burn Patient. , Maude H. Malick, OTR, Judith A. Carr, OTR. Harmarville Rehabilitation Center, Educational Resource Division, Guys Run Road, Pittsburgh, PA 15238, 268 pp ( 1982), $23.00 (paperback). Susan R. Helin…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation D. J. Plazek, In-Chul Choy, F. N. Kelley, E. von Meerwali, Long-Ji Su; Viscoelasticity and Tearing Energy o…
Synroc‐D is a polyphase nuclear waste ceramic optimally consisting of zirconolite, perovskite, an ulvospinel‐rich solid solution, a hercynitic spinel solid solution, and nepheline. A continuous intergranular glass phase is also present, which may aid in densification, but decreases the waste form's durability in aqueo…
Abstract Measurements of water desorption and sorption on four Ca-saturated illitic clays show that the shapes of the isotherms are very similar to those for other oxide surfaces, indicating that the formation of water multilayers is quantitatively similar. This enables graphs of multilayer thickness against mass sorb…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and decomposition of E- and Z-3,3,5-trisubstituted 1,2-dioxolanesMasaya Yoshida, Masahiro Miura, Masatomo Nojima, and Shigekazu KusabayashiCite this: J. Am. Chem. Soc. 1983, 105, 20, 6279–6285Publication Date (Print):September 1, 1983Publication History Published o…
Using SEM techniques, magnetic domains have been studied in amorphous ribbons of Co70.3Fe4.7Si15B10annealed to produce different values of transverse anisotropy constant Ku. The average domain width varied as Ku-1/6, in agreement with theoretical models incorporating the μ-effect. Domains were also studied in ribbons…
As part of the National Reduced Enrichment Research and Test Reactor Program, Argonne National Laboratory (ANL) is engaged in a fuel alloy development project. The reduction of the 235U enrichment from above 90% to below 20% for such fuels would lessen the risk of diversion of the fuel for nonpeaceful uses. Fuel alloy…
An extension of the McMillan (1975) and Nakanishi and Shiba (1977) models of charge-density-wave formation which fully reflects the space-group symmetry of the $1T\ensuremath{-}\mathrm{Ta}{\mathrm{S}}_{2}$ structure is presented. The model allows an incommensurate $c$-axis wave vector immediately below the normal to i…
From several polyvinyl alcohol (PVA)-utilizing mixed cultures, two component bacterial strains essential for PVA utilization were isolated, and their properties and roles in PVA utilization were studied. Each pair of essential component strains consisted of a type I strain, which produced a PVA-degrading enzyme and co…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic ground state of iron(II) phthalocyanine as determined from accurate diffraction dataPhilip Coppens, Liang Li, and Nai Jui ZhuCite this: J. Am. Chem. Soc. 1983, 105, 19, 6173–6174Publication Date (Print):September 1, 1983Publication History Published online1 May 20…
The cholesteric pitch P of lyotropic mesophases of hydroxypropyl-cellulose are determined from optical measurements, i.e., angular dependence of the scattered light intensity and transmission spectra. The observed results are explained with help of Pincus’ theory for cholesteric liquid crystals. The variations of the…
Abstract High molecular weight polymers have become well established as packaging or container materials. Unlike metallic and ceramic barriers, however, polymer films are known for their semipermeable nature; that is, they permit small gaseous and vapor molecules to migrate through their atomic/molecular structures. S…