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 sol‐gel process for the preparation of glass‐like cordierite and ceramic oxide powder is described. Metal alkoxide precursors were dissolved in 2‐methoxyethanol and the metal cations were complexed using 2,4‐pentanedione to overcome different hydrolysis rates of metal alkoxides which lead to microscopic inhomogeneit…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhase behavior of ternary polymer blends composed of three miscible binariesG. R. Brannock and D. R. PaulCite this: Macromolecules 1990, 23, 25, 5240–5250Publication Date (Print):December 1, 1990Publication History Published online1 May 2002Published inissue 1 December 1990h…
Bovine carbonic anhydrase B (CAB) is chosen as the model protein to study the phenomenon of protein aggregation, which often occurs during the refolding process. Refolding of CAB from 5 M GuHCl has been observed by quasi-elastic light scattering (QLS), which confirms the formation of a molten globular protein structur…
The existing underground transmission system in the United States is worth about $5 billion. To optimize the return on that investment and on further investment in the growing system, EPRI has sponsored research to develop periodic and continuous diagnostic procedures and methodologies for evaluating underground cable…
Abstract The electrical conductivity (σ) and thermoelectric power ( Q ) of polycrystalline lithiumzinc ferrites sintered at 1200 and 1300 °C was investigated as a function of temperature. The porosity and activation energy were calculated. It was found that the electrical conductivity is progressively increasing with…
Abstract Moisture can be absorbed from the air by PVC plastisols and by the fused product. Water in plastisols can contribute to defects in films, sheet goods and foam products, usually in the form of depressions or craters. Water absorbed by thermoformable foam PVC sheets can result in defects in the molded product,…
The effect of post sintering heat treatments on the intrinsic coercivity of Fe-Nd-B magnets is studied. It is shown that the large anisotropy in thermal expansion coefficients in the a and c directions of the tetragonal unit cell as well as the anisotropy in thermal expansion properties between the matrix and the grai…
Abstract Rb 2 K 4 Co 2 O 5 wurde erstmals durch Erhitzen inniger Gemenge der binären Oxide in Form von dunkelroten Einkristallen und Pulver erhalten (vor Verreiben Rb:K:Co = 1,2:3,2:1; Ni‐Zylinder, 570°C, 20d). Die Strukturaufklärung [Vierkreisdiffraktometerdaten; PW 1100; AgK ‐Strahlung; 401 von 607 I 0 (hkl); R = 9,…
Article Overlooked trigonal symmetry in structures reported with monoclinic centred Bravais lattices; trigonal description of Li8Pb3, PtTe, Pt3Te4, Pt2Te3, LiFe6Ge4, LiFe6Ge5, CaGa6Te10 and La3.266Mn1.1S6 was published on December 1, 1990 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume…
Abstract The compatibility of suspension poly(vinylchloride) [PVC] with twelve different plasticizers was determined using calculated compatibility predictors, as well as actual measurements of compatibility. Solubility parameters were capable of classifying plasticizers of a given family in terms of their compatibili…
Abstract The oriented ingots of isostructural compounds Sn 2 SbS 2 I 3 and Pb 2 SbS 2 I 3 were prepared using a modified Bridgman method. The lattice parameters of the prepared orthorhombic compounds have been determined by a X‐ray powder diffraction analysis. From the spectral response of the photoconductivity the fo…
The limits of high-power, high-repetition-rate operation of photoconductive switches utilizing diamond are explored. To evaluate diamond as a photoconductor for high-power switching applications, the following experiments were performed: (1) measurement of switch resistance as a function of the bias electric field; (2…
Data from a single defected fuel element operating in-reactor are used to develop a physically based model for describing the increased release of iodine and noble gas fission products to the primary coolant following a reactor shutdown and start-up. Iodines are only released on reactor shutdown, whereas both species…
This report presents a descriptive model for the expansion and fragmentation behavior for the case of a single-point, end-initiated cylindrical warhead. This model divides the overall behavioral process of the warhead case into four distinct zones of behavior which occur between initial case motion and fragment impact…
Abstract The effects of (OH)/F substitutions on thermally induced reactions in the apophyllite group have been investigated using TGA and DTA methods, supplemented by X-ray diffraction, infra-red and other techniques to identify the products of reaction. The samples studied cover the range between fluorapophyllite and…
Abstract The rate theory of RA 2 +RB 3 polymerization has been developed to enable the concentrations of the smallest inelastic loops and the resulting reductions in elastic shear modulus at complete reaction to be evaluated. Reduction in modulus is expressed as M c /M° c , the effective molar mass of chains between e…
The effects of n-type dopant (P, As) concentration in silicon (100), temperature, and oxidizing species on native oxide growth in liquid water are described. The oxide growth on phosphorus (P)- and arsenic (As)-doped n + -Si surfaces (10 20 cm -3 ) in ultrapure water exhibits saturation of oxide thickness, suggesting…
Auger, ESCA, electron emission, evaporation, and desorption measurements were made on three different types of scandate surfaces. They are: (a) an impregnated top layer scandate cathode, (b) an unimpregnated top layer scandate cathode with a deposited barium or barium oxide adsorbate surface layer, and (c) a synthesiz…
Phenolic analogues of 2-[4-(2-piperidinoethoxy)phenyl]-3-phenyl-2H-1-benzopyran (1), a novel antiestrogen, were synthesized and evaluated for their structure-activity relationship. Incorporation of OH at position 7 was found to improve receptor affinity of the benzopyran while having no effect on its action as an anta…
Tetrahedrite and tennantite are extremely common in a variety of ore deposits, but the genetic information they record is difficult to decipher because of the limited understanding of their phase relations in multicomponent systems. Most natural compositions can be described by the general formula (Cu,Ag)1e@e,Zn,Cu)2(…