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。
New type of Cu-AI-Nb -base alloys containing nickel, cobalt and chromium with high martensitic transformation temperatures have been developed. In this paper the mechanical properties, shape memory characteristics, the temperatures of reversible martensitic transformation and thermal stability of these alloys are pres…
The atomic configurations at macrotwin interfaces between microtwinned martensite plates in Ni 65 AI, 5 material are investigated using high resolution transmission electron microscopy (HRTEM). The observed structures are interpreted in view of possible formation mechanisms of these interfaces. A distinction is made b…
During the past few years, biomineralized manganese has been shown to cause ennoblement of various stainless steels to open circuit potentials of 300–400 mV/SCE. We have demonstrated that ennoblement, caused by biologically deposited manganese minerals, along with a relatively low stainless steel pitting potential, ca…
The title compounds were prepared by arc-melting cold-pressed pellets of the elemental components. They crystallize with a tetragonal structure already reported for CeCr 2 Si 2 C. It was refined from single-crystal X-ray data of PrCr 2 S 2 C: P4/mmm, a - 402.2( 1) pm, c = 535.2(1) pm, Z = 1, R = 0.012 for 252 structur…
Preferred crystallographic orientation, or texture, occurs almost universally, both in natural and man-made systems. Many components and devices in electronic and magnetic systems are fabricated from materials that have crystallographic texture. With the rapidly increasing use of thin film technology, where sharp axis…
Results of investigation of carbon films deposited with the use of gas-phase chemical reactions in the plasma of a dc discharge are presented. Films obtained at different parameters of the deposition process varied widely in their structure and phase composition, from polycrystalline diamond to graphite-like material.…
Several forms of the equation describing the radial motion of a spherical bubble in a compressible linear viscoelastic liquid are derived. The relative merits of these equations are discussed by using a three-parameter linear Oldroyd model to describe the non-Newtonian properties of the liquid.
The utilization of maltose by Clostridium acetobutylicum ATCC 824 was investigated. Glucose was used preferentially to maltose, when both substrates were present in the medium. Maltose phosphoenolpyruvate (PEP)-dependent phosphotransferase system (PTS) activity was detected in extracts prepared from cultures grown on…
A commercial oligosiloxane having two γ-hydroxypropyl endgroups and a number-average molecular weight (M̄n) around 1 000 Da was condensed with Bu2Sn(OMe)2 yielding tin-containing macrocycles but no polymers. These macrocycles reacted with γ-thiobutyrolactone by insertion of one thiolactone per Sn—O bond. When ε-caprol…
Small quantities of four cottons with distinctive hues ranging from light tan to cinnamon and green, grown by the University of Arizona, are converted into sliver and spun into both ring and rotor yarns using industrial-scale equipment. Fiber and yarn tests are performed in order to compare the cottons, and the yarns…
Glass is an under-cooled liquid that very slowly relaxes towards the equilibrium crystalline state. Its energy balance is ill understood, since it is widely believed that the glassy state cannot be described thermodynamically. However, the classical paradoxes involving the Ehrenfest relations and Prigogine–Defay ratio…
The electromechanical response of ceramics has long been described with Landau Devonshire phenomenology, wherein the strain response is linked to a polynomial expansion in electric field or dielectric displacement. Consequently, the electromechanical response has been modeled with a variety of basis functions. However…
In theory, physical crystals can be represented by idealized mathematical lattices. Under appropriate conditions, these representations can be used for a variety of purposes such as identifying, classifying, and understanding the physical properties of materials. Critical to these applications is the ability to constr…
Abstract Mesoporous TiO2 photocatalyst, which consisted of uniform mesopores (pore size about 4 nm) and with anatase framework and huge surface area as high as 329 m2 g−1, was prepared by selectively dissolving of silica in Ti–Si binary oxides.
Selected magnesium hydroxide and calcium carbonate fillers were dry coated with stearic acid and calcium, magnesium, and zinc stearates. The course of the coating reaction was monitored using a quantitative diffuse reflectance Fourier transform infrared spectroscopy method and by thermal analysis. The coated fillers w…
Abstract The optical properties of thiol‐stabilized CdTe nanocrystals have been examined. The thiol groups ‐SR generate a CdS shell at the interface, leading to a CdTe/CdS core—shell structure. The present paper describes our efforts to identify the influence of the CdTe–SR interface on the optical properties of the n…
Organic-inorganic hybrid materials offer the opportunity to combine the desirable properties of organic polymers (toughness, elasticity) with those of inorganic solids (hardness, chemical resistance). Since improved mechanical and chemical resistance is an increasing demand for various coating applications, hybrid mat…
Ning Jiang, Susan R. Wessler, Insertion Preference of Maize and Rice Miniature Inverted Repeat Transposable Elements as Revealed by the Analysis of Nested Elements, The Plant Cell, Vol. 13, No. 11 (Nov., 2001), pp. 2553-2564
Abstract New thermoplastic elastomers have been prepared from the blends of metallocene-based polyolefins (Engage) with low-density polyethylene (LDPE), and ethylene-vinyl acetate copolymers (EVA) of different grades with LDPE by electron beam modification. Structural changes of these blends with or without sensitizer…
We synthesized phosphorus-doped and boron-doped emitters by using trimethylphosphite P(OCH3)3 and trimethylborate B(OCH3)3 as doping sources in a microwave plasma chemical vapor deposition system. Based on our experimental results from scanning electron microscopy and Raman spectra, there is much difference among undo…