Materials Literature
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Experiments performed with a current industrial-texturing nozzle on a specially designed singlehead texturing machine are described. These involve the use of high-speed still and cine photography, together with measurements of yarn speed on emergence from the nozzle and yarn-tension measurements at various stages of t…
The growth of crystalline anodic aluminum oxide during anodization in an aqueous ammonium citrate electrolyte has been investigated. Crystalline sites were observed to nucleate only during the early growth of the oxide film, and their number was dependent upon the electrolyte temperature and the crystallographic orien…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroelectrochemistry of (.mu.-oxo)bis[phthalocyaninato)iron(III)]Lawrence A. Bottomley, Claudio Ercolani, Jean Noel Gorce, Giovanna Pennesi, and Gentilina RossiCite this: Inorg. Chem. 1986, 25, 14, 2338–2342Publication Date (Print):July 1, 1986Publication History Publishe…
A methodology is developed for the evaluation of the energetic consequences of postulated core disruptive accidents (CDAs), in liquid-metal fast breeder reactors. The methodology provides a framework for integrating the results of mechanistic analyses, including whole-core simulations (SAS, SIMMER), special effects an…
Spectroscopic photoresponse of the passive film formed on iron in neutral borate solution was studied. The spectroscopic three parameter reflectometry and the photoelectrochemical technique were employed to obtain the spectra of absorption coefficient and photocurrent. From these spectra, a conversion efficiency, η, f…
A test procedure is described by which quick measurements of stiffness and damping coefficients of elastomer O-rings can be made for a wide range of the parameters affecting O-ring dynamics. Tests were performed to investigate the effects of squeeze and pressure on the dynamic characteristics of Nitrile (Buna N) and F…
The broadening of the $^{57}\mathrm{Fe}$ M\"ossbauer line due to diffusion jumps of iron atoms in a copper single crystal has been measured as a function of crystal orientation and temperature between 1060 and 1313 K. The results are the following: (i) The anisotropy of the broadening agrees with what is expected for…
Abstract The tendency for aggregation and disruption of aggregates of calcium oxalate dihydrate (CaOx) crystals in urinelike mother liquor was quantitatively studied in a two‐stage mixed‐suspension, mixed‐productremoval crystallizer/Couette‐flow aggregator operated in series. The degree of aggregation was obtained by…
Workers were studied at a tannery that operated from 1873 to 1960, once one of the biggest in Scandinavia. The results show a slight numerical increase of deaths from cancer of the stomach and a significant, threefold excess mortality from cancer of the pancreas. Even in view of critical questions about validity it se…
Abstract Phthalocyanine complexes of yttrium(III) and lanthanoid(III) ions, Pc3Ln2 (Pc = phthalocyanine anion, Ln = lanthanoid(III) cation) were prepared and characterized. A Q band undergoes a blue shift with a decrease in ionic radius of the lanthanoid(III) ions, while an X band undergoes a red shift.
Abstract Die β‐Modifikation eines auf spezielle Weise pigmentierten und stabilisierten Polypropylen‐Typs wurde durch einen nicht isotherm geführten Kristallisationsprozeß in reiner Form dargestellt. Das Schmelzverhalten der β‐Modifikation ist stark von der thermischen Vorgeschichte — vor allem von der Rückkühltemperat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolvent-induced crystallization of quenched isotactic polypropylene in different liquidsV. Vittoria and F. RivaCite this: Macromolecules 1986, 19, 7, 1975–1979Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published inissue 1 July 1986http…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid-phase block copolymer synthesis by the iniferter techniqueTakayuki Otsu, Tetsuo Ogawa, and Tsuyoshi YamamotoCite this: Macromolecules 1986, 19, 7, 2087–2089Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published inissue 1 July 1986h…
An energy-selective photon detector for inverse photoemission spectroscopy is described. The bandpass is effected by the transmission cut-off of a CaF2 window and the ionisation threshold of an acetone filling. The detected mean photon energy is E0=9.9 eV with an energy resolution Delta E=0.4 eV (FWHM). With this dete…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation and photophysical properties of iron-ruthenium tetranuclear bipyridyl complexes of the type {[(bpy)2Ru(L-L)]3Fe}R. H. Schmehl, R. A. Auerbach, W. F. Wacholtz, C. M. Elliott, R. A. Freitag, and J. W. MerkertCite this: Inorg. Chem. 1986, 25, 14, 2440–2445Publication…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemistry of weakly solvated lanthanide-metal cations. Synthesis, characterization, and catalytic chemistry of [Eu(CH3CN)3(BF4)3]xRichard R. Thomas, Venkatasuryanarayana. Chebolu, and Ayusman. SenCite this: J. Am. Chem. Soc. 1986, 108, 14, 4096–4103Publication Date (Print):J…
Different expressions of the maximum-entropy estimates of the electron density function, corresponding to different prior information are obtained. They show that no general-purpose configurational entropy of density maps exists. Some universal properties of the modellings are discussed. In particular, the meaning of…
Abstract We have combined pressure–volume–temperature measurements and high‐temperature x‐ray diffraction to calculate the heat of fusion of the poly(4‐methyl pentene‐1) crystal from the Clapeyron equation. We find Δ H f = 14.8 cal/g, only about half as large as several literature values. The new value of the heat of…
Abstract The kinetic reaction of ferron (8‐hydroxy‐7‐iodo‐5‐quinoline‐sulfonic acid) with partially neutralized Al solutions of varying basicity and age were investigated with the intent of separating mononuclear and polynuclear Al. Ferron solutions buffered with varying quantities of NaOAc, NH 2 OH·HCl, and acetic ac…
Abstract Studies conducted on butadiene–acrylonitrile copolymer (NBR)/poly(vinyl chloride) (PVC) blends at different temperatures indicate that an optimum temperature exists for the formation of a particular blend. The mechanical properties of the blends confirm this observation. PVC stabilizer based on magnesium oxid…