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。
Abstract According to XRD, DTA, geochemistry and electron microscopy data of a few selected samples, three categories of smectitic clay minerals occur in the Cenomanian and Turonian chalks sampled in several sections of northern France. The first one corresponds to detrital illitesmectite mixed-layers reworked from pe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpatially-Addressable Immobilization of Macromolecules on Solid SupportsSteven A. Sundberg, Ronald W. Barrett, Michael Pirrung, Amy L. Lu, Benjang Kiangsoontra, and Christopher P. HolmesCite this: J. Am. Chem. Soc. 1995, 117, 49, 12050–12057Publication Date (Print):December…
A model is proposed to explain the irradiation-induced amorphization of graphite. This model assumes that the single-vacancy concentration saturates to ${C}_{\mathrm{VS}}(T)$ at irradiation temperature $T$; that the single-vacancy contained regions gradually transform to disordered regions, of which accumulation leads…
The reaction sintering of equimolar mixtures of ZnO and A1 2 O 3 powders was investigated as a function of primary processing parameters such as the temperature, heating rate, green density, and particle size. The powder mixtures were prepared by two different methods. In one method, the ZnO and A1 2 O 3 powders were…
A classical bond-order interatomic potential function developed by Tersoff has been applied to study the structural, mechanical, thermal, vibrational, and surface properties of \ensuremath{\beta}-SiC. The potential has been modified to eliminate the unphysical effects associated with large volumetric deformation. Fund…
Basanitic glasses with known dissolved C concentrations have been analyzed using infrared spectroscopy to calibrate the molar absorptivity of carbonate. C is dissolved as carbonate complexes in the glass resulting in absorption bands at 1525 and 1425 cm−1. Molar absorptivities of 283 ± 8 L/(mol·cm) were determined for…
The place of epicontinental waters in global ecology, R. Margalef phytoplankton - which, and how much?, J. Capblancq and J. Catalan prokaryotology for the limnologist, C. Pedros-Alio and R. Guerrero macrophytes, taking control of an ancestral home, C.M. Duarte et al interannual variability in limnic ecosystems - origi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTN2 Cleavage by Three-Coordinate Group 6 Complexes. W(III) Complexes Would Be Better Than Mo(III) ComplexesQiang Cui, Djamaladdin G. Musaev, Mats Svensson, Stefan Sieber, and Keiji MorokumaCite this: J. Am. Chem. Soc. 1995, 117, 49, 12366–12367Publication Date (Print):Decembe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDramatic Stabilization of a Hexagonal Columnar Mesophase Generated from Supramolecular and Macromolecular Columns by the Semifluorination of the Alkyl Groups of Their Tapered Building BlocksV. Percec, D. Schlueter, Y. K. Kwon, J. Blackwell, M. Moeller, and P. J. SlangenCite…
The evolution of structural parameters characterizing the semicrystalline morphology of poly(aryl-ether-ether-ketone) (PEEK), and its blends with poly(aryl-ether-imide) (PEI), has been determined as a function of temperature by means of small-angle (SAXS) and wide-angle (WAXS) X-ray scattering studies, using synchrotr…
We have measured the dielectric relaxation of the glass-forming liquid N-methyl-$\ensuremath{\varepsilon}$-caprolactam (as a representative of nonassociating liquids of low molecular weight) confined to the mesopores of a controlled porous glass with 102 \AA{} pore diameter. Three distinct relaxation peaks within ${\e…
A $^{13}\mathrm{C}$ NMR study on $\ensuremath{\kappa}={(\mathrm{B}\mathrm{E}\mathrm{D}\mathrm{T}\ensuremath{-}\mathrm{T}\mathrm{T}\mathrm{F})}_{2}X$ ($X=\mathrm{Cu}{(\mathrm{NCS})}_{2}, \mathrm{Cu}[\mathrm{N}{(\mathrm{CN})}_{2}]\mathrm{Br}, \mathrm{and} \mathrm{Cu}[\mathrm{N}{(\mathrm{CN})}_{2}]\mathrm{Cl}$) is report…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCeria-Based Anodes for the Direct Oxidation of Methane in Solid Oxide Fuel CellsE. S. Putna, J. Stubenrauch, J. M. Vohs, and R. J. GorteCite this: Langmuir 1995, 11, 12, 4832–4837Publication Date (Print):December 1, 1995Publication History Published online1 May 2002Published…
First-order Raman spectra of hydrogenated nanocrystalline silicon (nc:Si:H) films show unexpected features in their optical vibrational modes for crystallites with sizes ranging from 2 to 6 nm. Two size-dependent spectral regions, one with the stronger intensity peaking at 505–509 cm−1 and another a shoulder-like band…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEPR Spectroscopy and Photophysics of the Lowest Photoactivated Triplet State of a Series of Highly Conjugated (Porphinato)Zn ArraysP. J. Angiolillo, Victor S.-Y. Lin, J. M. Vanderkooi, and Michael J. TherienCite this: J. Am. Chem. Soc. 1995, 117, 50, 12514–12527Publication D…
The effects of nitrogen alloying on the corrosion properties of stainless steels (SS) is a matter of debate. A number of apparently contradictory results have been presented by various researchers. The actual mechanism by which nitrogen alloying influences the corrosion properties of SS has been the topic of even more…
Summary Adsorption of Cu(II), Zn(II), Co(II) and Cd(II) on kaolinite has been investigated at 25°C as a function of pH, concentration of the substrate, and the nature and concentration of the supporting electrolyte. The adsorption edges for three metals (Zn(II), Co(II) and Cd(II)) showed clear evidence of two distinct…
A method is presented in which both optical constants and growth rates may be simultaneously extracted from the in situ normal incidence reflectance of a growing thin film. The method employs a virtual interface model, thus avoiding cumulative errors that are encountered if a standard multiple-layer model is used. No…
Abstract We describe a model for framework silicates in which the SiO 4 (and AlO 4 ) tetrahedra are treated as perfectly rigid and freely jointed. From this model we are able to identify low-energy modes of distortion of the structure, which we call Rigid unit modes. These modes can act as soft modes to allow easy dis…
Photoluminescence (PL) and Raman spectroscopy were employed to investigate the nature and sources of stress and the type and distribution of impurities and defects in thin diamond films grown on silicon substrates. The types of impurities and defects which were detected in the diamond films are the nitrogen, silicon,…