Materials Literature
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Au cours de l'affinage des fromages pte molle de type Camembert, certains minraux migrent de l'intrieur vers l'extrieur de faon irrversible. Ainsi les teneurs en calcium et magnsium de la crote en fin d'affinage sont respectivement de 16,7 g/ kg et de 521,9 mg/kg alors que celles du centre sont de 0,92 g/kg et de 72,5…
Co-condensation of silver atoms with monomeric SiO and an excess of argon yields Ag(SiO) and probably Ag2(SiO), identifiable by their i.r. spectra; 28,29,30Si and 16,18O isotopic shifts imply not a linear but a triangular structure for Ag(SiO) with ∠ AgSiO ⩽ 90°
The birefringence of mixtures of homologues from the terminally non-polar series of p,p′-dialkylazoxybenzenes has been studied. The birefringence is used as a probe of the orientational order parameter, which is coupled to the translational (smectic) order parameter. The tricritical nematic to smectic-A point which re…
Classical levitation melting process using conventional conical inductcr can not be used at industrial scale because of the limited size of liquid metal which can be maintained in equilibrium against gravity force. Because of high frequency and axisymmetry of magnetic field distribution, a stagnation point occurs at t…
Article The Hot Pressing of Dry-formed Wood-based Composites - Part I. A Review of the Literatlire, Identifying the Primary Physical Processes and the Nature of their Interaction was published on January 1, 1988 in the journal Holzforschung (volume 42, issue 6).
Five types of collagen with triple-helical regions approximately 300 nm in length were found in lamprey tissues which show characteristic D-periodic collagen fibrils. These collagens are members of the fibril forming family of this primitive vertebrate. Lamprey collagens were characterized with respect to solubility,…
Abstract The basic premise underlying the use of the scanning electron microscope (SEM) for linewidth metrology in semiconductor research and production applications is that the video image acquired, displayed, analyzed, and ultimately measured accurately reflects the structure of interest. However, it has been clearl…
Reaction in water of Cu(pdto)(ClO4)2 with Li(TCNQ)/TCNQ mixtures yields solid crystalline materials of formulae Cu(pdto)(TCNQ)x(x= 2, 2.5, or 3) which display high electrical conductivities; reaction of Cu(pdto)(ClO4) with Li(TCNQ) yields Cu(pdto)(TCNQ), a poor conductor which has been shown by X-ray crystallography t…
Acetylenic Polymers Diacetylene Polymers Electrically Conducting Polymers Electrical Properties Electromagnetic Interference Electronics Applications Electrooptical Applications Lithographic Resists Optical Properties Photoconductive Polymers.
The physicochemical properties of a calcium-binding protein (CaBP) isolated from rat liver cytosol was investigated. Isoelectric focusing in a polyacrylamide gel plate using the Broad pI Calibration Kit showed that the isoelectric point is 5.20. The ultraviolet (UV) absorption spectrum of CaBP showed a maximum at 278…
In order to make a quantitative description of the plastic deformation of polycrystalline alloys governed by the stress induced martensitic transformation (SIM), the condition of yield by SIM is formulated for multiaxial stress states. The relation between the plastic strain of a crystallite and the volume fractions o…
Pulsed-dye laser excitation and lifetime spectroscopy of the 7F0----5D0 transition of Eu3+ reveals details of the binding of this ion to the calcium-binding sites of calmodulin (labeled I-IV, starting at the N-terminus). For 10 microM calmodulin Eu3+ binds quantitatively at sites I and II and more weakly at sites III…
Dihydroxysilicon(IV) octakis(dodecyloxymethyl)phthalocyanine forms columnar liquid crystal at temperatures ranging from –7 °C to more than 300 °C; polycondensation occurs in the mesophase to yield a series of polysiloxanes which lead to a lamellar liquid crystalline phase.
In the case of multistable anchorings, the selection between competing anchoring directions must be achieved. Using as an example the spreading of nematics droplets on SiO films evaporated under oblique incidence, we show that this selection is accomplished during the wetting of the substrate by the nematic. We analys…
The high-resolution 29Si- and 27Al-NMR spectra and ESR spectra for five allophanes (SiO2/Al2O3=1.19, 1.22, 1.75, 1.77 and 1.90) are reported, together with the spectra for two imogolites (SiO2/Al2O3 = 0.96 and 1.0) and a halloysite (SiO2/Al2O3 = 2.0). It is apparently seen that 29Si-NMR spectra for allophanes vary dep…
The modification of the Penrose tiling into a periodic structure is considered. Detailed analysis of the strip method and the dual transformation which yield approximants of the perfect tiling is presented in such a way that a complete classification of approximants is provided. The defects introduced to change the ap…
Abstract The mean crystal size of coarse crystalline products is determined by secondary nucleation and crystal growth. Secondary unclei are mainly produced by contacts of crystals with parts of the crystallizer or with other crystals. As a consequence, attrition effects are very important. In this paper, a model is p…
Compounds Cu(pcpci)Cl (1) and Cu(pcpci)Br (2)[pcpci =N-(2′-pyridylcarbonyl)pyridine-2-carboximidate] are isostructural and crystallize in the monoclinic space group Pc with two formula units in cells of dimensions [(1)/(2)]: a= 3.963(2)/3.888(3), b= 8.48(3)/8.641(3), c= 18.21(12)/17.944(11)Å, and β= 94.9(2)/92.63(6)°.…
A novel silver–copper anionic cluster [Ag6Cu7(C2Ph)14]– has been synthesized from the reaction of [PhC2AgC2Ph]– and a mixture of [AgC2Ph]n and [CuC2Ph]n; its structure constitutes a central linearly co-ordinated copper atom linked through Cu–Ag interactions to three tetranuclear [Ag2Cu2(C2Ph)4] subclusters, and within…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTetrakis(1,3-dithiol-2-ylidene)cyclopentanone: a new electron donor with remarkably low oxidation potentialToyonari. Sugimoto, Yohji. Misaki, Yoshihisa. Arai, Yukishi. Yamamoto, Zenichi. Yoshida, Yasushi. Kai, and Nobutami. KasaiCite this: J. Am. Chem. Soc. 1988, 110, 2, 628…