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。
Long-spacing-segment crystallites prepared from type III collagen with the chain composition [alpha1(III)]3 and type I collagen with the chain composition [alpha(I)]i12alpha2 have been compared in the electron microscope after positive. staining with phosphotungstic acid and uranyl acetate. The comparison revealed sev…
A procedure is described in this paper for distinguishing in the measured electrical properties of polycrystalline β‐alumina, the separate contributions of the grain boundaries and of the crystal, i.e. , the grain interiors. This separation is brought about through the use of a model for these properties. Certain quan…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhysical adsorption of patchwise heterogeneous surfaces. I. Heterogeneity, two-dimensional phase transitions, and spreading pressure of the krypton-graphitized carbon black system near 100.deg.KFrederick A. Putnam and Tomlinson Fort Jr.Cite this: J. Phys. Chem. 1975, 79, 5,…
A two−phase material in which the phase boundaries are cylindrical surfaces is considered. The generators of the phase boundaries are parallel to the z axis and the x and y axes are the principal axes of the effective conductivity tensor. If the two phases have conductivities σ1 and σ2, then the effective conductivity…
A procedure is described to utilize blue dextran-Sepharose as an affinity chromatographic column specific for the super-secondary structure called the dinucleotide fold, which forms the binding sites for substrates and effectors on a wide range of proteins. The procedure can be used to identify proteins, either purifi…
It has been observed here that the K edge of strontium is shifted towards the high energy side in all its compounds with respect to strontium metal. These shifts have been correlated, qualitatively with the interatomic distances and the per cent ionic character of the bonds in simple compounds. A graph of observed shi…
Abstract The results of the absorption edge study of some glasses based on CdAs 2 are discussed in terms of internal potential fluctuations. Both the electrostatic and deformation fluctuations are present in a‐CdGeAs 2 whereas in remaining glasses only the former were observed. A qualitative description of the electro…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUnusually facile bridgehead enolization. Locked boat forms in anti-Bredt olefinsAlex Nickon, Douglas F. Covey, Fu-Chih Huang, and Yu-Neng KuoCite this: J. Am. Chem. Soc. 1975, 97, 4, 904–905Publication Date (Print):February 1, 1975Publication History Published online1 May 20…
Abstract Die acetophenon‐sensibilisierte Belichtung von Allen liefert eine komplexe Produktmischung, aus der sich das Allendimere 1 , die Trimeren 2 und 3 sowie die Ketone 4 und 5 isolieren lassen. Dieser Befund steht im Gegensatz zur beschriebenen thermischen Di‐ und Trimerisierung des Allens, die zu 1, 8–12 führt. E…
1,3-Diphenyl-2-pyrazolines substituted in the 4- and 5-positions with phenyl groups undergo dye-sensitized photooxidation at widely different rates depending on the substitution pattern. Depending on both the solvent and the substitution pattern, two types of reaction are usually observed: (a) dehydrogenation to the c…
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Selim Ades and C. H. Champness, "Optical activity of tellurium to 20 µm," J. Opt. Soc. Am. 65, 217-218 (1975) Export Citation BibTex Endnote (RIS) HTML…
In Mytilus californianus, root lamellae of the byssus stem are formed by two morphologically distinct exocrine cell types. Type 1 cells contain large ellipsoid granules which are ultrastructurally identical to those of the collagen gland associated with byssus thread formation: these granules are secreted only at the…
Abstract The ab initio self‐consistent energy band structure of trigonal selenium based on the Hartree‐Fock‐Slater formalism has been determined with the self‐consistent symmetrized OPW method (SCSOPW). The influence of lattice constants, exchange potential, and relativistic effects is discussed. The density of states…
A measurement of the dielectric breakdown strength in low- and high-density polyethylene was carried out under the condition of elongation by tensile stress. The wave forms of applied voltages were a.c., d.c. and impulse (1×40 µs) voltages, and the thickness of films of polyethylene was ca. 50 µm. In the case of low-d…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTransition metal complexes containing an optically active macrocyclic ligand. Manganese(III), nickel(II), and copper(II)Philip S. Bryan and James C. DabrowiakCite this: Inorg. Chem. 1975, 14, 2, 299–302Publication Date (Print):February 1, 1975Publication History Published on…
Multiple melting behavior in nylon 6 is analyzed by means of a high temperature X-ray camera (HTXC) and a differential scanning calorimeter (DSC). Melting in the intermediate phase between crystalline and amorphous ones is supposed to contribute to the higher temperature peak in DSC. The recrystallization process is c…
The effect of hydrostatic pressure on structural phase transition temperatures above room temperature in CsPbCl 3 and CsPbBr 3 was studied by dielectric measurements at high pressures up to about 8 kbar. The initial pressure coefficients of the transition temperatures are 7.65 deg kbar -1 , 5.2 deg kbar -1 , and 5.4 d…
Motion of a screw dislocation in a model b.c.c. crystal has been analyzed through the following procedure: (1) Peierls potentials for translations between stable and metastable positions of a screw dislocation are computed atomistically for a model crystal under various shear stresses on various planes, (2) activation…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of manganese complexes containing a synthetic macrocyclic ligandPhilip S. Bryan and James C. DabrowiakCite this: Inorg. Chem. 1975, 14, 2, 296–299Publication Date (Print):February 1, 1975Publication History Published online1 May 2002Published i…
Abstract A comparison is made of the ion exchange behavior, towards the cobalt ion, of five sodium montmorillonite clays. The selectivity for the bivalent ion at low cobalt loading is correlated with the average dimensions of the particles in the various clays, as characterized by several methods. The data are interpr…