Materials Literature
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Abstract Three ion exchange equilibrium isotherms between muscovite-paragonite solid solution and 2-molal KCl-NaCl aqueous solutions have been studied at (1) 420°C 1 kbar, (2) 420°C, 2 kbar, and (3) 550°C, 2 kbar. The Δ G °(Joules) ± 2σ of the ion exchange reaction are: Δ G ° (1) = −17 259±686, Δ G ° (2) = −18 268 ± 5…
Polyclonal antihuman alpha-thrombin antibodies produced in rabbits reacted minimally (less than 0.05%) in solution with human prothrombin. However, when prothrombin was adsorbed to artificial surfaces such as polyvinyl chloride (PVC), the cross-reactivity of surface-bound prothrombin with antibody IgG to thrombin (gre…
Crystallographic texture is one of the major factors affecting magnetic permeability of steels at flux densities\geq;1.5T. It is known that texture formation, and hence, permeability is significantly impacted by the precipitation of retained alumninum and nitrogen as AlN at sub-grains or cold-worked grain boundaries p…
Hydrolyzed Collagen is a hydrolysate derived from animal byproducts. It is used in cosmetic products as a conditioner or moisturizer at concentrations less than 5 percent. Hydrolyzed Collagen was practically nontoxic when administered orally or dermally in acute animal toxicity studies. This ingredient was minimally i…
The rates of ab/desorption of water vapor for Zr-V-Fe getter were investigated by means of mass analyzed thermal desorption spectroscopy. The absorption rate obeyed first order kinetics with respect to the pressure of water vapor. The activation energies for absorption were determined as 1.8 (H2O), 2.7 (D2O), and 3.2…
Carburization is a major mode of corrosive degradation of high chromium alloy materials in many high temperature processes. The process generally involves the transfer of carbon from the gas phase onto the alloy surface followed by diffusion of carbon to the alloy interior with concurrent precipitation of chromium‐ric…
Investigations of helium effects in metals at the Savannah River Laboratory have been carried out by introducing helium by radioactive decay of tritium. This process does not create concurrent radiation damage, such as accompanies ion implantation and (n,α) reactions. The process has its own peculiarities, however, wh…
The fuel fragmentation is one of the important subjects in the field of molten fuel-coolant interaction (MFCI) since it is one of basic processes of the MFCI, and it has not yet been made clear enough. Accordingly, U02 fuel fragmentation was studied in a postulated reactivity initiated accident (RIA) condition by the…
The stress corrosion cracking of sensitized stainless steels due to thiosulfate and tetrathionate has been associated with an increased rate of anodic dissolution in the active‐passive region of voltammetric scans, via the mutual sensitivity of both phenomena to a series of anionic inhibitors. The increased anodic dis…
Abstract Three series of segmented polyurethanes with different soft segment lengths and concentrations were examined by TMA, DMA, and mechanical methods. Maximum tensile strengths were obtained when ssc was 40–50%, which was explained by a specific interlocking morphology. No significant effect of soft-segment chain…
Permanent magnet compounds are basically ferromagnets with uniaxial anisotropy. In different cases, the magnets are elaborated by sintering of powders previously oriented and compressed under field. The value of the remanent induction Br is directly dependent on the degree of crystallites alignment, and we present in…
It must be first of all asked what rust really is. The question may seem to have an obvious answer. Anybody who has had anything at all to do with iron is acquainted with the effect of rust. Nevertheless, it has to be admitted that even a number of researchers who have dedicated themselves to the subject do not have s…
Clay subsoils were analysed by a procedure that uses a choline chloride reagent to distinguish double-layer exchangeable cations from other more strongly adsorbed forms extractable by an ammonium sulfate reagent. In those clay subsoils that contained little organic matter, the exchangeable cations made up nearly all o…
Action d'agents antimicrobiens dans des mousses de polyurethanne, polyester et PVC pour divers usages
Skinfold thickness was measured at five sites in 750 infants. The study population was unselected except that twin pregnancies and the infants of diabetic mothers were excluded, and very preterm infants were under represented. A pilot study had indicated that skinfold measurement was most reproducible at the thigh sit…
Abstract The pyrolysis of polymethyl acrylate is reported with identification of the major pyrolysis products. The mechanism involving random homolytic scission of the chain followed by a series of intermolecular and intramolecular transfer reactions as proposed by Cameron and Kane and extended by Haken, Ho, and Hough…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermomechanical behavior of modified asphaltsVikas M. Nadkarni, Arun V. Shenoy, and Johnson MathewCite this: Ind. Eng. Chem. Prod. Res. Dev. 1985, 24, 3, 478–484Publication Date (Print):September 1, 1985Publication History Published online1 May 2002Published inissue 1 Septe…
Conducting polymers with high electrical conductivity like doped polypyrrole are used successfully as radiation shielding meterials. They are especially effective to shield an electric field with an attenuation higher than 30 dB in the range of 3 MHz–300 MHz with doped polypyrrole of 35 µ thickness, bu not effective f…
Metoclopramide hydrochloride (MCPHCl.H2O) and metoclopramide base (MCP) have been studied by DSC, thermomicroscopy, X-ray diffraction and infrared spectroscopy. MCPHCl.H2O does not readily lose water of crystallization either from the solid state or from the melt, but depending on the conditions, dehydration can give…
Development of a rotational power loss measuring system based on the wattmeter method for a single Epstein strip and a brief discussion of magnetization processes of Si-Fe sheets under the rotational magnetizing condition are described. The pick-up coil system has a configuration with a flux search coil sandwiched by…