Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDiscotic mesophases of dirhodium tetracarboxylatesAnne Marie Giroud-Godquin, Jean Claude Marchon, Daniel Guillon, and Antoine SkouliosCite this: J. Phys. Chem. 1986, 90, 22, 5502–5503Publication Date (Print):October 1, 1986Publication History Published online1 May 2002Publis…
A diffusionless cubic (c)→metastable tetragonal (t′) phase transformation occurs in certain alloys in the ZrO 2 ‐Y 2 O 3 system on quenching from elevated temperatures. Microstructural features due to this phase transformation, principally anti‐phase domain boundaries (APB's) and mechanical accommodation twins, have b…
Dilute Al–Fe–Si alloys with Fe/Si weight ratios of 2 and 4, which had been subjected to solidification rates of ~1 and ~10 Ks−1 were investigated by analytical transmission electron microscopy. The precipitation of ‘constituent’ intermetallic phases was characterized as a function of the Fe/Si ratio, alloy purity, rat…
Abstract Thermoplastic elastomer blends of natural rubber (NR) with high density polyethylene (HDPE) and with low density polyethylene (LDPE) were reinforced with short silk fiber. Processing characteristics such as torque and temperature developed during mixing and the effect of processing parameters such as nip gap…
"Scanning Electron Microscopy." Optica Acta: International Journal of Optics, 33(10), pp. 1228–1229
Sintered α‐SiC was corroded by thin films of Na 2 SO 4 and Na 2 CO 3 molten salts at 1000°C. This hot corrosion attack reduced room‐temperature strengths by as much as 50%. Strength degradation was proportional to the degree and uniformity of corrosion pitting attack as controlled by the chemistry of the molten salt.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsolation and structural characterization of the solvated lithium salts of the Group VA (15) anions [EPh2]- (E = nitrogen, phosphorus, arsenic or antimony) and [Sb3Ph4]-Ruth A. Bartlett, H. V. Rasika Dias, Hakon. Hope, Brendan D. Murray, Marilyn M. Olmstead, and Philip P. Po…
The distribution of local magnetism in Al-Mn quasicrystal alloys has been studied by NMR spin-echo techniques. The $^{55}\mathrm{Mn}$ resonance is found to be close to the position observed in non-magnetic orthorhombic ${\mathrm{Al}}_{6}$Mn and $\ensuremath{\alpha}\ensuremath{-}{\mathrm{Al}}_{73}{\mathrm{Si}}_{10}{\ma…
Abstract Ozone, O 3 , reacts with a carbon sample at room temperature. Clean carbon samples show a half to one and a half order of magnitude increased initial rate constant ( k 0 ) for O 3 loss relative to repetitively exposed carbon samples. The ozone loss rate and therefore the rate constant reaches steady state ( k…
We studied the effect of topical application of arachidonate on the brain surface on blood-brain barrier permeability to either 125I-labeled human albumin or to horseradish peroxidase administered intravenously. Arachidonate was applied under a cranial window, and the concentration of albumin was measured in brain aft…
Both b.c.c. and icosahedral AlCuLi phases coexist following conventional ingot casting. Owing to a slight difference in their composition, they can be distinguished by a Z-contrast technique in a scanning electron microscope. Moreover, the existence of an orientation relationship between the b.c.c. and icosahedral (Al…
The genes for the two subunits of the formate dehydrogenase from Methanobacterium formicicum were cloned and their sequences determined. When expressed in Escherichia coli, two proteins were produced which had the appropriate mobility on an SDS gel for the two subunits of formate dehydrogenase and cross-reacted with a…
A theoretical investigation has been made of the interface excitations associated with the double inversion layers of semiconductor-insulator-semiconductor structure with metallized surfaces. The general dispersion relation has been derived using the local electromagnetic theory. The numerical computation is performed…
The results of both uniaxial and biaxial flexure as well as toughness testing on actual commercial ceramic capacitor samples are reported. Necessary procedural adjustments are outlined for miniaturizing the applied‐moment double‐cantilever‐beam test to accommodate these small samples. Strength and toughness testing sh…
Abstract The molecular and crystal structure of bis(4‐mercaptophenyl) sulfide ( 3 ) was determined by means of an X‐ray diffraction analysis. The crystals are monoclinic, P 2 1 / n with four molecules in the unit cell of the dimensions: a = 5,752 (1), b = 25,767 (9), c = 7,954 (2) Å and β = 95,2 (1)°. The structure wa…
Oxidative depolymerization of several polysaccharides induced by oxygen radical generating systems such as ascorbic acid-copper ion was investigated by the increases in their reducing powers and by gel-filtration. All polysaccharides used in these experiments were greatly depolymerized within 24 hr at room temperature…
Oxidation tests on spent-fuel fragments and rod segments were conducted between 250 and 360°C to relate temperature and defect size to fuel oxidation rate and time-to-cladding-splitting. Defect sizes from an equivalent circular diameter of 8 µm (the approximate size of a stress-corrosion-cracking-type breach) to 760 µ…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVibrational properties of ligand-free metal clusters: silver (Agn) (n = 3, 4, 5, 6, 7, 12, 13)Geoffrey A. Ozin and Douglas F. McIntoshCite this: J. Phys. Chem. 1986, 90, 22, 5756–5761Publication Date (Print):October 1, 1986Publication History Published online1 May 2002Publis…
The roles of short range and long range internal stresses during nonelastic deformation have been postulated and explored using the MATMOD-4V deformation model. New microstructural variables have been introduced in MATMOD-4V which represent the effects of internal stresses upon deformation. Simulations for aluminum ha…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe active species in surface-enhanced Raman scattering of flavins on silver colloidsNam Soo. Lee, Rong Sheng. Sheng, Michael D. Morris, and Lawrence M. SchopferCite this: J. Am. Chem. Soc. 1986, 108, 20, 6179–6183Publication Date (Print):October 1, 1986Publication History P…