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。
A study was performed to determine the time-course of oxidative degradation and the extent to which the degradation proceeded through the bulk of ultra-high molecular weight polyethylene joint components that had been irradiated and stored on a shelf. Standardized cylindrical samples, taken from a single batch of extr…
The number of protein structures known in atomic detail has increased from one in 1960 (Kendrew, J.C., Strandberg, B.E., Hart, R.G., Davies, D.R., Phillips, D.C., Shore, V.C. Nature (London) 185:422-427, 1960) to more than 1000 in 1994. The rate at which new structures are being published exceeds one a day as a result…
Almost everybody in the urethanes industry is by now familiar with the different options for the recycling of urethane-based materials. Physical recycling (fillers in the polyol), chemical recycling (glycolysis, hydrolysis) and energy recovery are the main options under development. The actual process, however, is onl…
Abstract The mechanical properties and the high‐temperature behaviour of fibre‐reinforced composites are controlled by both the microstructure and the microchemistry of fibre/matrix interlayers. For a C‐fibre reinforced SiC composite and various SiC (Nicalon)‐fibre reinforced Duran glasses, the composition of the inte…
Abstract Oxygen plasma and ultra violet (UV) ozone treatments have been used to oxidize the surfaces of batches of natural wool fibres and woven cloths. The changes in surface composition and chemistry induced by these treatments have been followed using X‐ray photoelectron spectroscopy (XPS). Oxidation of surface pro…
Abstract Degradation of polymers by hyperthermal species (e.g. atomic oxygen (ATOX)) occurs in a variety of practical systems including external surfaces of spacecraft in low earth orbits (LEO), for which the impact with the residual atomic oxygen (impact energy 3–7 eV) results in significant erosion. In the present w…
The crystals of most proteins are poorly ordered and diffract to lower resolutions than other crystals of simple and inorganic compounds. The use of two novel methods for gel protein crystal growth, utilizing liquid diffusion and vapor diffusion, are described for the growth of lysozyme and canavalin. Crystallization…
We report x-ray photoemission spectra (XPS) of potassium nickel (IV) hexaoxidoiodate (VII). XPS spectra were measured with the Physical Electronics Model 5400 x-ray photoelectron spectrometer using unmonochromated Mg Kα x rays at two pass energy settings corresponding to analyzer energy resolutions of 1.34 and 0.54 eV…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, Crosslinking, and Properties of Benzocyclobutene-Terminated Bisphenol A PolycarbonatesM. J. Marks and J. K. SekingerCite this: Macromolecules 1994, 27, 15, 4106–4113Publication Date (Print):July 1, 1994Publication History Published online1 May 2002Published inissu…
Infrared spectra of free molecules of 4-nitroaniline, 2-chloro- and 2,6-dichloro-4-nitroanilines and their H-bonded complexes (1:1) with acetonitrile, dimethylformamide, dimethyl-sulphoxide and hexamethylphosphortriamide have been investigated in spectral region of aminogroup stretching vibrations in CCl 4 medium. Spe…
To suppress the reactivity of ALN powder with water, chemical surface modification with carboxylic acids has been investigated. It was found that the chemical stability of ALN powder increased as the number of carbon atoms in carboxylic acids used for the surface treatment increased. Among the carboxylic acids tested,…
In gas production wells, carbon (C) steel tubulars subject to carbon dioxide (CO2) corrosion have been replaced gradually with corrosion-resistant 13% chromium (Cr) steel of the martensitic type (AISI type 420 [UNS S42000]), eliminating the need for inhibition and possibly extending tubular lifetime. The effect of mat…
The surface precipitation process of epitaxially grown graphite (0001) layers on the C-doped Ni(111) surface has been investigated by in situ x-ray photoemission spectroscopy measurements. Peak intensity measurements at various temperatures clarified the change of the carbon chemical state from the segregated carbon t…
The Optical Fibre Diameter Analyser (OFDA) instrument is based on automatic image analysis technology and was recently introduced to provide a rapid, accurate measurement of average fiber diameter (AFD) and diameter distribution (SD) of textile fibers. Experiments were conducted with wool and mohair in various physica…
Nickel by Mg Kα XPS Nickel spectra were measured with the Physical Electronics Model 5400 x-ray photoelectron spectrometer (XPS) using unmonochromatized Mg Kα x rays and four pass energy settings corresponding to analyzer energy resolutions of 1.34, 0.54, 0.27, and 0.13 eV. The specimen is a high purity (99.95%) 4 μm…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermally reversible Gelation of Agarose in Water/Dimethyl Sulfoxide MixturesCyrille Rochas, Annie Brulet, and Jean-Michel GuenetCite this: Macromolecules 1994, 27, 14, 3830–3835Publication Date (Print):July 1, 1994Publication History Published online1 May 2002Published inis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamic SAXS Studies of Sphere-Forming Block Copolymers under Large Oscillatory Shear DeformationShigeru Okamoto, Kenji Saijo, and Takeji HashimotoCite this: Macromolecules 1994, 27, 14, 3753–3758Publication Date (Print):July 1, 1994Publication History Published online1 May…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLuminescence of Pb2+ in SrTiO3H. F. Folkerts and G. BlasseCite this: Chem. Mater. 1994, 6, 7, 969–972Publication Date (Print):July 1, 1994Publication History Published online1 May 2002Published inissue 1 July 1994https://pubs.acs.org/doi/10.1021/cm00043a018https://doi.org/10…
The behavior of a cavitation bubble adjacent to a rigid wall is studied numerically with the boundary integral method described in Zhang, Duncan, and Chahine [J. Fluid Mech. 257, 147 (1993)]. In the previous work, the pressure inside the bubble was held constant (this is referred to herein as the empty bubble case). I…
Abstract Depth composition and chemical states of elements constituting the overlayers of Ni x Cr alloys ( x = 0–30 at.%) passivated in borate buffer solutions (pH = 9.2) were determined as a function of the chromium bulk content of the alloy. Depth sputter profiling was performed using both Auger electron spectrosco…