Editorial
Juan Carlos López Agüí1992-09-01Materiales de Construccion
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Editorial
Infrared thermography: possibilities and application to the study of material surfaces
Non-destructive measurement techniques are revealing themselves as a very important tool in the different fields or research due to their very own nature. The Materials team of ICCET is developing, since some time ago, the application of one of these techniques —specifically speaking, infrarred thermography— to the fo…
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Noticias
Cathodoluminescent Properties and Energy Transfer in Red Calcium Sulfide Phosphors (CaS:Eu, Mn)
Red and orange calcium sulfide phosphors (CaS:Eu and CaS:Mn) were prepared by the flux method. Eu 2+ and Mn 2+ show strong concentration quenching at 0.1 and 0.8% respectively. Use of the potassium polysulfide flux leads to efficient phosphors; their efficiency reaches 60 and 100% of Y 2 O 2 S:Eu, respectively. Calciu…
The optical properties of tellurite glasses
The refractive index for a family of optical glasses (tellurite containing halide) has been analyzed. From the dielectric theory, the relationship between the refractive index and number of ions/unit volume (N/V) with polarizability α has been discussed. Halogen substitution resulted in a lower dielectric constant, al…
Deformation mechanisms and plastic resistance in single-crystal-textured high-density polyethylene
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDeformation mechanisms and plastic resistance in single-crystal-textured high-density polyethyleneZ. Bartczak, A. S. Argon, and R. E. CohenCite this: Macromolecules 1992, 25, 19, 5036–5053Publication Date (Print):September 1, 1992Publication History Published online1 May 200…
The crosslinking of chitosan fibers
Abstract A need exists for the development of totally biodegradable packaging materials. Chitosan is an under‐utilized polymer which possesses many of the desired characteristics for this application. This article describes the crosslinking of chitosan fibers. Epichlorohydrin (ECH) was selected as a convenient base ca…
Solvent effects on the photochromic reactions of diarylethene derivatives
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolvent effects on the photochromic reactions of diarylethene derivativesMasahiro Irie and Koichi SayoCite this: J. Phys. Chem. 1992, 96, 19, 7671–7674Publication Date (Print):September 1, 1992Publication History Published online1 May 2002Published inissue 1 September 1992ht…
Optical properties of composite membranes containing arrays of nanoscopic gold cylinders
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOptical properties of composite membranes containing arrays of nanoscopic gold cylindersColby A. Foss Jr., Gabor L. Hornyak, Jon A. Stockert, and Charles R. MartinCite this: J. Phys. Chem. 1992, 96, 19, 7497–7499Publication Date (Print):September 1, 1992Publication History P…
Encyclopedia of Materials Characterization: Surfaces, Interfaces, Thin Films
Imaging Techniques, Elemental, Chemical, and Structural Analysis in Electron Beam Column Instruments, Structure Determination by Electron/X-Ray Diffraction/Scattering, Electron Emission Spectroscopies, X-Ray Absorption and Emission Spectroscopies, Visible/UV Emission nad Reflection, Vibrational Spectroscopies and NMR,…
Novel Polyether Copolymers Consisting of Linear and Dendritic Blocks
The quantitative end-capping of polyethylene glycols with bromine-substituted, dendritic, aromatic polyethers 1 produces amphiphilic block copolymers. In solvents in which both blocks are only slightly soluble or in which only one block is soluble, micelles form. Depending on the solvent, they can alter their size and…
Preparation and morphology of triblock copolymers of the ABC type
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and morphology of triblock copolymers of the ABC typeYasuhiro Mogi, Hiroyuki Kotsuji, Yuji Kaneko, Katsuaki Mori, Yushu Matsushita, and Ichiro NodaCite this: Macromolecules 1992, 25, 20, 5408–5411Publication Date (Print):September 1, 1992Publication History Publi…
High-pressurein situx-ray-diffraction study of the phase transformation from graphite to hexagonal diamond at room temperature
High-pressure in situ x-ray diffraction was carried out to clarify the nature of the pressure-induced phase transformation in graphite at room temperature. The combined use of a Drickamer-type high-pressure apparatus with sintered diamond as an anvil material and very intense x rays from synchrotron radiation made it…
Effect of nitrogen content on magnetic properties of Sm/sub 2/Fe/sub 17/N/sub x/ (0<x<6)
Effects of nitrogen content on crystal structure and magnetic properties have been investigated in Sm/sub 2/Fe/sub 17/N/sub x/. Sm/sub 2/Fe/sub 17/N/sub x/ specimens with 0>
Partial discharge. XIV. Acoustic partial discharge detection-practical application
For pt.XIII see ibid., vol.8, no.4 (July/August 1992). The finer points of acoustic partial discharge (PD) detection systems and their common applications are treated. The PD source, propagation path of the waves, the acoustic sensor, and system noise are described. The design of acoustic PD instrumentation, the locat…
Elastic modulus and equilibrium swelling of poly(dimethylsiloxane) networks
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElastic modulus and equilibrium swelling of poly(dimethylsiloxane) networksSuman K. Patel, Shawn Malone, Claude Cohen, Jeffrey R. Gillmor, and Ralph H. ColbyCite this: Macromolecules 1992, 25, 20, 5241–5251Publication Date (Print):September 1, 1992Publication History Publish…
Heterogeneity of rat liver and spleen macrophages in gadolinium chloride–induced elimination and repopulation
Blockade of phagocytosis and selective elimination of macrophages (m phi s) are generally accepted procedures for gaining knowledge about the function of m phi s in vivo. This study demonstrates that intravenous injection of gadolinium chloride (GdCl3) not only blocks phagocytosis by rat liver m phi s (Kupffer cells)…
An Analysis of the System Effects in Woven Fabrics under Ballistic Impact
Following a brief review of prior work on fabric-based armor systems, the system effects that occur during the ballistic impact of woven fabric body armor materials are discussed from a conceptual framework developed to relate single yarn impact mechanics to fabric impact mechanics. The consequence of assembling yarns…
Magneto-inductive effect (MI effect) in amorphous wires
Circumferential magnetic properties of amorphous magnetic wires (a-wires, for short) with three kinds of compositions (FeSiB, CoSiB, and FeCoSiB) and diameters of 120 mu m and 50 mu m are investigated applying an AC current using a BH hysteresis tracer. The magnitude of the induced voltage between both ends of the a-w…