Materials Literature
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Polymer resins, because of their low cost, versatility, and ease of use, are the principal component in many static-control items. These items include containers and packages used to store and transport sensitive electronics. This paper seeks to explain how polymers are used for these demanding applications by providi…
We have performed atomic-scale simulations of cross-slip processes of screw dislocations in copper, simulating jog-free dislocations as well as different types of jogged screw dislocations. Minimum-energy paths and corresponding transition state energies are obtained using the nudged-elastic-band path technique. We fi…
Two linear polyamide conjugates of Gd(DTPA)2- were synthesized and characterized by high-resolution nuclear magnetic resonance (NMR) spectroscopy and size exclusion chromatography (SEC). DTPA was copolymerized with two different diamines, 1,6-hexanediamine and trans-1,4-cyclohexanediamine, yielding the polymers DTPA-H…
The adsorption chemistry of CO on clean and Pt-supported TiO 2 (110) was investigated. It was found that surface structure of TiO 2 plays an important role in the chemistry that takes place at the surface. On the reduced (1 x 2)-reconstructed surface, CO desorbed at 140 and 170 K, while only desorption at 140 K was ob…
Batch cultures of Ralstonia eutropha in chemically defined media with acetic acid (HAc) as the sole carbon source were conducted to investigate acetate utilization, formation of poly(3-hydroxybutyrate) (PHB) and growth of active biomass (ABM) under different carbon to nitrogen (C/N) weight ratios. The specific acetate…
The effect of Al 8 B 4 C 7 used as an antioxidant in MgO–C refractories and the behavior of Al 8 B 4 C 7 in CO gas were investigated in the present study. Al 8 B 4 C 7 was found to react with CO gas, to form Al 2 O 3 ( s ), B 2 O 3 ( l ), and C( s ), at temperatures >1100°C. The Al 2 O 3 reacts with MgO to form MgA…
Polyelectrolyte complexes (PECs) are formed through the electrostatic interactions between polymers carrying opposite charges. Here are presented results of basic studies on the PECs of chitosan with other polysaccharides such as sodium alginate, carboxymethyl cellulose, polygalacturonic acid and κ-carrageenan. An ext…
This paper develops an objective method of drafting pressure garments to provide predetermined skin-and-garment interfacial pressures on patients. To predict interfacial pressure induced by different sizes of pressure garments on a particular curved surface of the human body, the relationship between the tensile prope…
An oxygen-doped GeSbTe interface layer improves the overwriting characteristics of the phase-change optical disk in the blue wavelength. The thermal and optical properties of oxygen-doped GeSbTe film and its crystal structure were investigated. Crystallization temperature and activation energy of the amorphous Ge–Sb–T…
The identification and discrimination of cubic ( c ) and metastable t ′‐zirconia phases by conventional X‐ray diffraction has proved to be a difficult problem because of the crystallographic similarities of the two phases. In this study, the c ‐phase and t ′‐phase in biphasic metastable zirconia samples have been succ…
Abstract For a better understanding of the physical and electronic properties of emissive carbon films, one of the best ways is to compare the results obtained with several surface and structural analysis techniques. In this article, different types of carbon film depositions for developing large flat panel displays b…
The tensile behaviour of solution annealed type 304L, solution annealed type 304, and solution annealed and sensitised type 304 stainless steels was investigated in hydrogen and helium under a pressure of 1·1 MPa over the temperature range 300–80 K at strain rates ranging from 4·2×10-5 to 4·2×10-2 s-1. For 304L steel,…
The stability of the intermetallics Gd(Fe, T) 12 and the site preferences of the ternary 3d or 4d transition element T are investigated by using a series of interatomic pair potentials, Φ Fe-Fe ( r ), Φ Fe-Gd ( r ), Φ Fe-T ( r ), Φ T-T ( r ), Φ T-Gd ( r ), and Φ Gd-Gd ( r ), for the first time. The calculated results…
ABSTRACT: Pepsin‐solubilized collagen (PSC) prepared from the skin of 3 fish species—common horse mackerel, yellow sea bream, and tiger puffer—were separated into 2 fractions, major and minor, by ammonium sulfate precipitation. These collagen fractions were further purified by phosphocellulose column chromatography. F…
Different mechanisms of spin pairing in doubly reduced polyoxometalates are studied on the basis of quantum-chemical DFT calculations. Using the nitrosyl derivative of decamolybdate [Mo(10)O(25)(OMe)(6)(NO)](-) (I) as an example, we elucidate an important role of the delocalization of "blue electrons". The charge dist…
The formation of silicon powder by pyrolysis of silane diluted in argon at different concentrations has been studied. A hot wall gasphase reactor was used for the thermal decomposition of SiH4 at 1000 °C and atmospheric pressure. The composition, morphology, size, and shape of the particles produced has been studied u…
Porous poly(ε-caprolactone) (PCL) films were prepared by the removal of poly(L-lactide) (PLLA) from phase-separated PLLA/PCL blend films using the selective Proteinase K™-catalyzed hydrolysis of PLLA and subsequent elution of its water-soluble oligomers and monomer into the surrounding hydrolysis media. Polarimetry, g…
Abstract A theoritical model of the production of open‐cell microcellular foam is presented. This model allows the prediction of the conditions necessary to produce these materials. Experiments verify the model quite well. The results of the batch processing experiments indicate the processing parameters that promote…
Abstract The application of carbon-silica dual phase fillers (CSDPF) to natural rubber compound was investigated. It was found that these new fillers give significantly better overall performances in comparison with the conventional fillers—carbon black and silica. In a typical truck-tread compound, due to its high po…
Optical properties of Yb3+–Tb3+ codoped silica sol-gel samples have been studied after the gel to glass transition. Different upconversion emissions have been observed under near infrared excitation at about 1 μm. The Tb3+ ions are excited by means of energy transfer processes from Yb3+ ions. The temporal evolution of…