Materials Literature
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Abstract The Raman spectra of polycrystalline samples of the metavanadates M II V 2 O 6 (with M = Ca, Cd, Cu and Mg), belonging to the brannerite structural type, have been recorded. A general assignment, supported by comparisons with known vibrational properties of other oxovanadium species, is proposed. The compound…
We present calculations of the light intensity transmitted through a ferroelectric liquid crystal light valve with uniformly tilted layers during electrooptical switching. We discuss the switching characteristics of the light valve for different layer tilts and at different applied voltage steps. We also show that the…
Abstract All available theoretical analyses for the drainage of thin plane‐parallel liquid films, such as those existing between two approaching liquid droplets or bubbles in the coalescence process, predict essentially the same dependence of rate of thinning of the intervening film on its size as is described by the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIdentification of intermediates and products in the reaction of porphyrin iron(III) alkyl complexes with dioxygenRamesh D. Arasasingham, Alan L. Balch, and L. Latos-GrazynskiCite this: J. Am. Chem. Soc. 1987, 109, 19, 5846–5847Publication Date (Print):September 1, 1987Public…
The phase diagram near compositions of magnet alloys, that is, Sm-Co-13.0at%Cu-10.0at%Fe, Sm-Co-7.0at%Cu-22.0at%Fe and Sm-Co-7.0at%Cu-22.0at%Fe-2.0 at%Zr sections of the phase diagram were determined in the Sm content range from 6 to 16 at%. Furthermore, relationships between phase transformation at high temperature a…
The corrosion behavior of AISI 316 stainless steel (SS) in formic and acetic acids was investigated by measuring the corrosion weight loss, the polarization curve, the impedance at the steel/solution interface, and the variation of natural electrode potential (NEP) with time. It was found that the corrosion rate of AI…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLong-distance magnetic exchange between chromium(III) atoms bridged by H3O2- ligandsMichael Ardon, Avi Bino, Kirsten Michelsen, and Erik PedersenCite this: J. Am. Chem. Soc. 1987, 109, 19, 5855–5856Publication Date (Print):September 1, 1987Publication History Published onlin…
Abstract Thin strips of pine, Pinus sylvestris , and lime, Tilia vulgaris , were acetylated with acetic anhydride to various levels of acetyl weight gains. Increase in thickness, due to the bulking effect of acetylation, and increase in equilibrium moisture content at 65% relative humidity were determined. Equilibrium…
When work is performed in heavy clothing, evaporation of sweat from the skin to the environment is limited by layers of wet clothing and air. The magnitude of decrement in evaporative cooling is a function of the clothing's resistance to permeation of water vapor. A physiological approach has been used to derive effec…
An analysis is presented for the Tammes problem: how must n points be distributed on the surface of a sphere in order that the minimum angular distance between any two of the points be a maximum? With the analogy of the capsid structure of small 'spherical' viruses, locally extremal arrangements are constructed in tet…
Hot-band grain size of 0.5% Si steels was changed from 42 to 115 μm by various combinations of several hot rolling and annealing conditions. The hot-bands were cold rolled from 2.3 to 0.50 mm and finally annealed for 1 min at several temperatures between 750 °C and 950°C. The values of magnetic induction B50 in the di…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntroduction of carboxylic acid, aldehyde, and alcohol functional groups onto the surface of poly(chlorotrifluoroethylene)Anthony J. Dias and Thomas J. McCarthyCite this: Macromolecules 1987, 20, 9, 2068–2076Publication Date (Print):September 1, 1987Publication History Publi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPentacyanoruthenate(II)-pentaammineruthenium(II/III) binuclear complexes bridged by cyanogen, cyanide, and 4,4'-bipyridineShirin Siddiqui, Wayne W. Henderson, and Rex E. ShepherdCite this: Inorg. Chem. 1987, 26, 19, 3101–3107Publication Date (Print):September 1, 1987Publicat…
Sintered Nd15-Fe77-B8 magnets contain a multiphase microstructure. Our analytical transmission electron microscope study reveals that the Nd-rich phase, which is an essential part of the liquid phase sintering process can be divided into at least 4 subtypes with different Nd:Fe-ratios. Impurities of the raw material s…
A 17-membered O2N3-donor macrocycle has been appended to a derivatized silica gel substrate, and the binding and selectivity properties of the functionalized surface towards CO11, Ni11 CU11, Zn11 and Cd11 in aqueous solution have been investigated. Metal uptake was found to be concentration-dependent with the maximun…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA diffuse reflectance FTIR spectroscopic (DRIFTS) investigation of carbon-supported metal carbonyl clustersJ. J. Venter and M. A. VanniceCite this: J. Am. Chem. Soc. 1987, 109, 20, 6204–6205Publication Date (Print):September 1, 1987Publication History Published online1 May 2…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStability, critical thickness, and the time of rupture of thinning foam and emulsion filmsA. Sharma and E. RuckensteinCite this: Langmuir 1987, 3, 5, 760–768Publication Date (Print):September 1, 1987Publication History Published online1 May 2002Published inissue 1 September…
[110](001) slip has been studied in [112] aluminium single crystals deformed in creep. Metallographic and microstructural observations were performed. At 150°C, the two primary {111} planes in a symmetrical orientation are activated. At 180-200°C, (001) starts being activated in some areas of the sample. The correspon…
Abstract An experimental method was developed to measure simultaneously the net proton surface charge density (σ H ) and surface excesses of metal ( n M ) and ligand ( n L ) on an Oxisol suspended in a ML electrolyte solution. The soil sample was first saturated with a LiClO 4 solution whose pH and ionic strength were…
This paper reflects an investigation of the feasibility of photochemical generation of ozone by irradiating gases containing oxygen with Hg lamps of the highest performance emitting the 185 nm line. Besides the expected photostationary equilibrium, determining factors for practical yields in ozone generation by the 18…