Materials Literature
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Recent developments in high energy magnets have created widespread interest in the area of permanent magnet (PM) motors. The use of PM synchronous motors or brushless motors to replace conventional DC or induction type motors has not been as speedy as anticipated earlier. This paper deals with the temperature effects…
NO adsorption on CeO2 pre-outgassed at different temperatures (Tv) has been studied by EPR and FTIR. The results are compared with those obtained by measuring the products of the reaction, performed at 323 K, between NO and CeO2 samples activated by previous heating under N2 flow. EPR results indicate that, for Tv 573…
ADVERTISEMENT RETURN TO ISSUEPREVArticleImmobilization of metalloporphyrins in electropolymerized films: design and applicationsFethi Bedioui, Jacques Devynck, and Claude Bied-CharretonCite this: Acc. Chem. Res. 1995, 28, 1, 30–36Publication Date (Print):January 1, 1995Publication History Published online1 May 2002Pub…
Physical and chemical properties of solid materials are strongly. influenced by the chemical composition of internal interfaces, One of the crucial parameters affecting interfacial chemistry is the atomic structure of the interface. Due to its importance. a considerable amount of work was done to elucidate the relatio…
Biomaterials are used in prostheses and medical devices for different purposes. Polymers are the most diverse class of biomaterials. All biomaterials must meet certain criteria and regulatory requirements before they can be qualified for use in medical applications. Biocompatibility is one of the most important requir…
The widespread use of SF/sub 6/ by the electric power and other industries has led to increased concentrations of SF/sub 6/ in the atmosphere. This causes concern as to possible effects on global warming, because SF/sub 6/ is a potent greenhouse gas. This paper first touches on this issue and then documents the behavi…
Numerous investigations have shown that the distribution profile of a drug can be modified at the cellular and tissular level by entrapment in submicronic colloidal systems (nanoparticles). This review provides an update on the technologies available for nanoparticles preparation. Their in vivo fate after intravascula…
"Introduction to Surface Chemistry and Catalysis." Drying Technology, 13(1-2), pp. 507–508
Ionic conductivities have been investigated for lanthanoid silicates of the Ln10(SiO4)6O3 solid solution series and related compounds. The activation energy and conductivity at 500 °C were estimated to be 69 kJ mol–1 and 1.8 × 10–4 S cm–1 for La10(SiO4)6O3 and 71 kJ mol–1 and 1.5 × 10–4 S cm–1 for Nd10(SiO4)6O3. The a…
Experimental data are presented of the development of PD activity in artificial air-filled spherical voids in epoxy resin over a period of /spl sim/6 months. The data are presented in the form of phase averaged plots of the charge distribution over the time (aging plots) and phase resolved histograms (PRPD patterns) a…
General aspects of biodegradable microspheres prepared from natural and synthesized polymers used in drug delivery systems are reviewed first from various viewpoints: characteristics of biodegradable polymers (physicochemical properties, bioerosion mechanism, biocompatibility), preparation method for the microspheres,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-Spin Molecules: Unusual Magnetic Susceptibility Relaxation Effects in [Mn12O12(O2CEt)16(H2O)3] (S = 9) and the One-Electron Reduction Product (PPh4)[Mn12O12(O2CEt)16(H2O)4] (S = 19/2)Hilary J. Eppley, Hui-Lien Tsai, Nadine de Vries, Kirsten Folting, George Christou, and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism and Dynamics in the H3[PW12O40]-Catalyzed Selective Epoxidation of Terminal Olefins by H2O2. Formation, Reactivity, and Stability of {PO4[WO(O2)2]4}3-Dean C. Duncan, R. Carlisle Chambers, Eric Hecht, and Craig L. HillCite this: J. Am. Chem. Soc. 1995, 117, 2, 681–6…
The thiocyanate dosimeter (10–2 mol dm–3 SCN– in O2-saturated water) has been standardised against the super-Fricke dosimeter (10–2 mol dm–3 FeII in O2-saturated 0.4 mol dm–3 H2SO4) using the hexacyanoferrate(II) dosimeter [5 × 10–3 mol dm–3 Fe(CN)64– in O2-saturated water] as a secondary standard. On the basis that G…
Polycrystalline, transparent YAG (Y 3 AI 5 O 12 ) ceramics were fabricated by a solid‐state reaction method using high‐purity Al 2 O 3 and Y 2 O 3 powders. The mixed powder compacts were sintered at 1600° to 1850°C for 5 h under vacuum. Optical transmittance in the region between the ultraviolet and infrared wavelengt…
For a system with hysteresis, the authors present a parameterized hysteresis model and develop a hysteresis inverse. The authors then design adaptive controllers with an adaptive hysteresis inverse for plants with unknown hysteresis. A new adaptive controller structure is introduced which is capable of achieving a lin…
M. D. Ward, Chem. Soc. Rev., 1995, 24, 121 DOI: 10.1039/CS9952400121
Preface 1. Past as prologue 2. Lattices, Voronoi cells, and quasicrystals 3. Introduction to diffraction geometry 4. Order on the line 5. Tiles and tilings 6. Penrose tilings of the plane 7. The aperiodic zoo 8. An atlas of tiling transforms Appendix I. A mathematician's toolbag Appendix II. De Bruijn's generalized fu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAb initio calculations and force field development for computer simulation of polysilanesH. SunCite this: Macromolecules 1995, 28, 3, 701–712Publication Date (Print):January 1, 1995Publication History Published online1 May 2002Published inissue 1 January 1995https://pubs.acs…
Electrochromism: Fundamentals and Applications is the first in-depth treatise on the topic. Written by leading scientists in the field, it is a state-of-the-art account of all aspects of electrochromism, presented at a level accessible to chemists, physicists, materials scientists and engineers. Both the physical and…