Materials Literature
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The fact that a titanium screw can be implanted into the mastoid portion of the human skull, at the same time establishing a permanent, reaction-free skin penetration, has made it possible to attach a new bone conduction hearing aid directly to the skull. To understand and improve this new method of bone stimulation,…
Foe nearly three decades people have employed an equation derived by Frenkel to describe the strain energy of an atom diffusing in a glass. This equation describes the strain energy to enlarge a spherical cavity and predicts physically unreasonable results. An alternative equation for a circularly symmetric enlargemen…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganometallic chemistry of rhodium tetraphenylporphyrin derivatives: formyl, hydroxymethyl, and alkyl complexesBradford B. Wayland, Seth L. Van Voorhees, and Charles WilkerCite this: Inorg. Chem. 1986, 25, 22, 4039–4042Publication Date (Print):October 1, 1986Publication His…
Abstract Simplified vent sizing equations for emergency relief requirements in reaction kettles and storage vessels are obtained from analytical consideration. Venting modes include homogeneous‐vessel venting, all‐vacor venting, and all‐liquid venting; energy sources due to runaway chemical reactions and external heat…
Abstract Surface‐enhanced Raman scattering (SERS) of adenine, adenosine, 2′‐deoxyadenosine, 5′‐dAMP, 5′‐rAMP, 5′‐rADP and 5′‐rATP adsorbed on aqueous Ag sol has been investigated. A shift of the adenine ring breathing mode from 746 to 735 cm −1 with increasing adenine concentration is interpreted as reflecting the reo…
A quasicrystal may be described by its quasilattice and its atomic decoration. We discuss two different commonly used methods for decorating quasilattices which lead to inequivalent real-space structures, the tile-decoration method and the hyperlattice-decoration-and-projection method. It is shown that diffraction pat…
An interface between two phases is considered. A set of differential equations of arbitrary order is derived from a Landau-Ginzburg approach. The higher-order equations reveal more detailed structure of the interface. In particular, any anisotropy of the interactions is exhibited in the equations and the modified Gibb…
Natural mordenite (Na1.49K2.80Mg0.04Ca2.05Sr0.05)(Al8.98Si39.13)O96.29.07H2O from Elba, Italy is orthorhombic, space group Cmc21, with a 18.094(1), b 20.516(1), and c 7.524(1) Å; Z = 1. The structure was refined in its hydrated form to Rw = 5.2%. The atom O(8) is not set on an inversion center and the T-O(8)-T angle…
A high-resolution x-ray crystallographic investigation of the complex between carboxypeptidase A (CPA; peptidyl-L-amino-acid hydrolase, EC 3.4.17.1) and the slowly hydrolyzed substrate glycyl-L-tyrosine was done at -9 degrees C. Although this enzyme-substrate complex has been the subject of earlier crystallographic in…
In Bacillus subtilis, the extracellular enzyme levansurcrase is synthesized in the presence of sucrose. A termination structure between the transcription start site and the structural gene was the apparent site for regulation by sucrose of transcription into the structural gene. Sequence analysis of the sacB leader re…
The spinel phase formed on the thermal reaction of kaolin group minerals was characterized by X‐ray quantitative analysis, lattice constant determination, and chemical analysis by analytical TEM. The spinel phase was determined to be nearly γ‐Al 2 O 3 with ∼8 wt% of SiO 2 , significantly less than previously reported.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic structure of transition-metal borides with the AlB2 structureJeremy K. Burdett, Enric. Canadell, and Gordon J. MillerCite this: J. Am. Chem. Soc. 1986, 108, 21, 6561–6568Publication Date (Print):October 1, 1986Publication History Published online1 May 2002Publishe…
Article Correlation of angular and bond length distortions in TO4 units in crystals was published on October 1, 1986 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 175, issue 1-4).
Sheet and rod stock of 304L stainless steel were tested in uniaxial tension and compression at strain rates between 10−4 s−1 and 104 s−1. To evaluate the yield locus behavior of the sheet material, multiaxial experiments were performed at a strain rate of 10−3 s−1. We have analyzed these results in terms of existing s…
Abstract Hydrotalcite-like compounds, [Mg 1-x Al x (OH) 2 ] x+ [xX − ·n H 2 O], where X − = ½CO 3 2− or OH − , were prepared by hydrothermal syntheses at <mml:math xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mnf="http://cambridge.org/core/manifest" xmlns:cup="http://contentservices.cambridge.org" xmlns:mml="http:…
Abstract Glassy isotactic propylene (PP) films of thickness up to 0.3 mm were obtained by an ultraquenching technique. The structure and properties of the as‐quenched and subsequently crystallized samples were characterized by various techniques. Electron microscopy indicates the glass has no structure larger than 25…
Abstract not Available.
Metals and alloys may experience accelerated oxidation when their surfaces are coated by a thin film of fused salt in an oxidizing gas. This mode of attack is called hot corrosion, and the most usual or dominant salt involved is sodium sulfate because of its high thermodynamic stability. The corrosive oxyanion fused s…
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
Myosin is identified and purified from three different established Drosophila melanogaster cell lines (Schneider's lines 2 and 3 and Kc). Purification entails lysis in a low salt, sucrose buffer that contains ATP, chromatography on DEAE-cellulose, precipitation with actin in the absence of ATP, gel filtration in a dis…