Materials Literature
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Abstract Blends of bisphenol‐ A polycarbonate (PC) with poly‐ (styrene‐co‐acrylonitrile) (SAN) and poly (acrylonitrile‐butadiene‐styrene) (ABS) prepared by screw extrusion and solution‐casting were investigated by differential scanning calorimetry and scanning electron microscopy. From the measured glass‐transition te…
Symmetrical and cyclic alkyl trithiocarbonates were synthesized by reacting CS2 and 33% aqueous NaOH with alkyl hal-ides under phase transfer catalysis conditions
Lead metaphosphate glass is characteristically prone to aqueous attack but becomes chemically resistant on the addition of iron oxide. We have measured the K-edge extended X-ray absorption fine structure (EXAFS) of Fe and the LIII-edge EXAFS of Pb and find the atomic environments of the two sites to be very different.…
The corrosion potential of stressed sensitized Type 304 stainless steel has been studied in solutions containing oxygen to determine the relation between potential fluctuations and the initiation of stress corrosion cracking. An in situ scanning vibrating electrode technique was shown to detect currents coming from gr…
In this paper, A new class of corrosion inhibitors for steel in strong HCl is described. When formulated with small amounts of surfactants, α-Alkenylphenones provide excellent protection for oilfield steel in contact with strong HCl (up to 28%). The protection levels are similar to, and sometimes superior to, those pr…
Abstract Odinite is a Fe 3+ -rich green clay that is widespread in the form of infillings or replacements of microtests, bioclasts, faecal pellets, or mineral debris on shallow marine shelfs and reef lagoonal areas in tropical latitudes. The structure is based on a 1 : 1 serpentine-type layer that is intermediate betw…
The general corrosion behavior of , Metglass 2826A, was assessed as a function of heat‐treatment and surface finish by cyclic potentiodynamic anodic polarization. The general corrosion resistance of Metglass 2826A decreased in this order: supersaturated solid solution (SS) anneal, polished, as‐received, subcritical an…
The feasibility of a permeation process using a palladium-silver alloy membrane, to separate deuterium and tritium from fusion reactor gaseous wastes needs demonstration owing to poisoning effects of impurities. A parametric investigation of the poisoning by the most important expected gaseous impurities (CO, CO2 and…
The dynamical behavior of the unstable explosive boiling of single droplets (1–2 mm diam) of diethyl ether, pentane, and isopentane at the superheat limit has been exhibited in detail. A+high ambient pressures, boiling consists of normal stable growth of a smooth bubble. At intermediate pressures a transitional regime…
Abstract The (02,11) X-ray diffraction band from a low-defect kaolinite from Cornwall (Hinckley index HI = 1·22) was examined to determine the defect structure. No combination of interlayer translations and admixing of dickite layers accurately modelled the observed diffraction pattern. Calculated diffraction patterns…
Magnetic properties were investigated for the ternary (Fe0.6Pt0.4)100−xBx and (Fe1−yPty)83B17 alloy ribbons prepared by the twin roll technique. Boron changes the compositions of the ordered FePt (γ1) phase, which coexists with Fe2B at various alloy compositions so that the actual Pt content of γ1 in the ternary alloy…
The effects of temperature, interface pH, and magnesium ions on the formation of calcareous deposits induced by cathodic protection (CP) on steel have been studied in seawater and in three 0.7 M NaCl + 0.0025 M NaHCO3 solutions. The interface pH at a given CP potential was calculated to be higher at low temperature, t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAtmospheric chemistry of aldehydes: enhanced peroxyacetyl nitrate formation from ethanol-fueled vehicular emissionsRoger L. Tanner, Antonio H. Miguel, Jailson B. De Andrade, Jeffrey S. Gaffney, and Gerald E. StreitCite this: Environ. Sci. Technol. 1988, 22, 9, 1026–1034Publi…
The electrical V-I characteristics of thin blown films of V2O5-Bi2O3 glasses with 95–70 mol % V2O5 were studied in the temperature range 200–400 K. It was observed that at lower fields, the bulk resistance controlled the current. At higher fields, all the glass compositions showed memory switching characteristics. The…
The interaction of cells with solid surfaces is important in many settings, including the response of tissue to implanted materials. Protein adsorption to the surface plays a critical role in controlling cell interactions with surfaces. However, few comprehensive studies of both cell behavior and protein adsorption in…
A convenient gas-liquid chromatography procedure to quantify poly-beta-hydroxybutyrate and poly-beta-hydroxyvalerate in activated sludge was developed by combining lyophilization of the samples, purification of the chloroform phase by water reextraction, and the use of capillary columns. With a flame ionization detect…
Transient behavior of small gas bubbles in a liquid set into violent motion by ultrasonic pressure waves is of interest because of widespread use of microsecond pulses in diagnostic ultrasound. Such pulses contain only a few pressure cycles and the transient pulsations of bubbles set in motion by such pulses would det…
ABSTRACT Muscle Type I collagen of five teleosts was characterized with respect to its thermal stability and subunit composition. The muscle collagen exhibited a higher denaturation temperature, Td, in solution and a higher degree of proline hydroxylation, compared with skin Type I collagen of the respective species.…
Abstract— The o‐, m‐, and p‐isomers of 5, 10, 15, 20‐ tetra(hydroxyphenyl)‐porphyrin have been of recent interest as potential second‐generation sensitisers in tumour phototherapy. Fluorescence spectroscopy, nanosecond laser flash photolysis and pulse radiolysis have been used to characterise the singlet and triplet e…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTXANES and EXAFS study of titanium alkoxidesF. Babonneau, S. Doeuff, A. Leaustic, C. Sanchez, C. Cartier, and M. VerdaguerCite this: Inorg. Chem. 1988, 27, 18, 3166–3172Publication Date (Print):September 1, 1988Publication History Published online1 May 2002Published inissue 1…