421   A novel method of synthesizing spherical nano-structured composite particles of aluminum nitride using transferred type DC Arc plasma A novel method of synthesizing spherical nano-structured composite particles of aluminum nitride using transferred type DC Arc plasma    2006 Aluminum nitride (AlN) composite particles consisting of nano-particles dispersed on the surface of spherical micro-particles are one of the materials necessary for developing solid insulating materials with high thermal conductivity. This paper describes a novel method of synthesizing AlN composite particles using transferred type DC nitrogen arc plasma. The shape of the synthesized particles, the diameter of micro-particles and the volume fraction of micro-particles in the synthesized composit... 查看全文

422   The etiology and molecular genetics of human pigmentation disorders The etiology and molecular genetics of human pigmentation disorders Guy Froyen, Marijke Bauters, Thierry Voet and Peter Marynen    2012 Pigmentation, defined as the placement of pigment in skin, hair, and eyes for coloration, is distinctive because the location, amount, and type of pigmentation provides a visual manifestation of genetic heterogeneity in pathways regulating the pigment-producing cells, melanocytes. The scope of this genetic heterogeneity in humans ranges from normal to pathological pigmentation phenotypes. Clinically, normal human pigmentation encompasses a variety of skin and hair color as well as punctate pigme... 查看全文

423   Nitrogen-14 NMR Spectroscopy Using Residual Dipolar Splittings in Solids Nitrogen-14 NMR Spectroscopy Using Residual Dipolar Splittings in Solids Simone Cavadini,† Adonis Lupulescu,† Sasa Antonijevic,*† and Geoffrey Bodenhausen†‡    2006 It is shown that nuclear magnetic resonance (NMR) spectra of nitrogen-14 (spin I = 1) can be obtained by indirect detection in powders spinning at the magic angle (MAS). The method relies on the transfer of coherence from a neighboring nucleus with S = 1/2, such as carbon-13, to single- or double-quantum transitions of nitrogen-14 nuclei. The transfer of coherence occurs through second-order quadrupole?dipole cross terms, also known as residual dipolar splittings. The two-dimensional NMR spectra... 查看全文

424   Ion beam analysis of as-received, H-implanted and post implanted annealed fusion steels Ion beam analysis of as-received, H-implanted and post implanted annealed fusion steels    2012 The elemental distribution for as-received (AR), H implanted (AI) and post-implanted annealed (A) Eurofer and ODS-Eurofer steels has been characterized by means of micro Particle Induced X-ray Emission (μ-PIXE), micro Elastic Recoil Detection (μ-ERD) and Secondary Ion Mass Spectrometry (SIMS). The temperature and time-induced H diffusion has been analyzed by Resonance Nuclear Reaction Analysis (RNRA), Thermal Desorption Spectroscopy (TDS), ERDA and SIMS techniques. μ-PIXE measurements p... 查看全文

425   Zinc oxide micro- and nanoparticles: Synthesis, structure and optical properties Zinc oxide micro- and nanoparticles: Synthesis, structure and optical properties    2010 Zinc oxide (ZnO) spherical nanoparticles (SNPs) and bitter-melon-like (BML) microparticles were synthesized by a hydrothermal route using a zinc (Zn) plate as a source and substrate at various synthesis conditions. The structural analysis confirmed the formation of ZnO with hexagonal wurtzite phase on the hexagonal Zn substrate with growth of the ZnO microparticles along the [1 0 1] direction. The UV-vis absorption spectra of the ZnO microparticles indicated absorption peaks in the UV region whi... 查看全文

426   Interventional and Endovascular Therapy of the Nervous System. A practical Guide Interventional and Endovascular Therapy of the Nervous System. A practical Guide    2002 查看全文

427   Direct measurement of the rates of reketonization of dienolates produced by photochemical enolization of .beta.-alkyl .alpha.,.beta.-unsaturated ketones in aqueous basic solution Direct measurement of the rates of reketonization of dienolates produced by photochemical enolization of .beta.-alkyl .alpha.,.beta.-unsaturated ketones in aqueous basic solution Randy M. Duhaime, Alan C. Weedon    1987 查看全文

428   Mechanism of adenylate kinase. What can be learned from a mutant enzyme with minor perturbation in kinetic parameters? Mechanism of adenylate kinase. What can be learned from a mutant enzyme with minor perturbation in kinetic parameters? Zhengtao Shi, In Ja L. Byeon, Ru Tai Jiang, Ming Daw Tsai    1993 查看全文

429   Study on the friction and wear properties of glass cloth composites filled with various nano- and micro-particles Study on the friction and wear properties of glass cloth composites filled with various nano- and micro-particles    2004 The glass cloth composites filled with irradiated polytetrafluoroethylene (PTFE), MoS2, nano-TiO2, and nano-CaCO3 were prepared by immersing of the glass cloth in an adhesive doped with various micro- and nano-fillers, plastering of the immersed glass cloth onto the steel substrate, and curing of the plastered glass cloth at proper temperature. The friction and wear properties of the resulting glass cloth composites sliding against AISI-1045 steel in a pin-on-disc configuration and under unlubri... 查看全文

430   Study on preparation of high purity mono-sized silicon micro particles by pulsated orifice ejection method Study on preparation of high purity mono-sized silicon micro particles by pulsated orifice ejection method    2008 Preparation of high purity mono-sized silicon particles by Pulsated Orifice Ejection Method (POEM) was investigated. The results of simulation show that a large contact angle between silicon and orifice is necessary for particle formation on processing by POEM. Mono-sized silicon particles can be prepared with quartz orifice and tundish within in a wide variety by POEM. Analyses by Scanning Electron Microscope (SEM) and Orientation Image Microscope (OIM) show that the obtained silicon particles ... 查看全文

431   Electrocapillarity under Ultraslow Relaxation of the Ionic Liquid Double Layer at the Interface between Trioctylmethylammonium Bis(nonafluorobutanesulfonyl)amide and Water Electrocapillarity under Ultraslow Relaxation of the Ionic Liquid Double Layer at the Interface between Trioctylmethylammonium Bis(nonafluorobutanesulfonyl)amide and Water Yukinori Yasui, Yuki Kitazumi, Naoya Nishi and Takashi Kakiuchi*    2010 Electrocapillarity has been studied in detail at the interface between a hydrophobic ionic liquid (IL), trioctylmethylammonium bis(nonafluorobutanesulfonyl)amide, and water, where the ultraslow relaxation of the structure of the electrical double layer on the IL side of the interface exists. The response of the interfacial tension and that of the charging current to the potential step can be fitted by a double exponential model having the relaxation time constants of a few seconds and 100 s. The... 查看全文

432   Regulation of growth in ornamental plants by post-harvest or ‘in store’ applications Regulation of growth in ornamental plants by post-harvest or ‘in store’ applications Richard Southgate, Rachel Paltridge, Pip Masters and Susan Carthew    2005 查看全文

433   The ability of cast composite technology to enhance ductility of wrought magnesium and alloys The ability of cast composite technology to enhance ductility of wrought magnesium and alloys    2011 At ambient temperature, hexagonal close packed magnesium has limited ductility due to low availability of active slip systems. In this work, 3 methods of enhancing the ductility of wrought magnesium are discussed, namely: (1) addition of microparticles such as Ti, Mo and SiC (Method 1), (2) addition of various oxide nanoparticles as well as carbon nanotubes (Method 2) and (3) use of aluminium based core as continuous reinforcement (Method 3). In Method 1, the magnesium matrix is softened (Ti mic... 查看全文

434   Use of optical knife technique for sorbent-decomposition study in a dry furnace gas desulfurization system Use of optical knife technique for sorbent-decomposition study in a dry furnace gas desulfurization system Jerzy Pisarek    0 In this paper quantitative research methodology of superficial or volumetric decomposition of solid phase concentration in dust chemical reactors is presented. Optical knife technique with high power He-Ne laser is used. The picture of dust zones is taken and processed numerically by software which allow high precision densitometric analysis. The new direction influence on intensity of laser light diffusion caused by dust was taken into account when interpreting the results. The tests were made ... 查看全文

435   Chemical changes and diastatic activity in grains of sorghum (Sorghum bicolor) cultivars during germination† Chemical changes and diastatic activity in grains of sorghum (Sorghum bicolor) cultivars during germination† Dr. F.-M. Kouml;hn, I. Erdmann, T. Oeda, K. F. El Mulla, H. G. Schiefer and W.-B. Schill    2006 Grain samples from nine sorghum (Sorghum bicolor (L) Moench) cultivars were germinated for 16, 48, 96 and 144 h, and changes in their diastatic activity, protein, starch, soluble sugars, tannin and total phenols contents were studied. The diastatic activity increased up to 96 h of germination and decreased at 144 h. Diastatic activity showed significant variation among cultivars, which ranged from 10.0 to 88.3 units at 48 h and from 20.0 to 150.4 units at 96 h germination. In general, starch con... 查看全文

436   The Impact of Graphite Furnace Parts on Radial Impurity Distribution in Czochralski-Grown Single-Crystal Silicon The Impact of Graphite Furnace Parts on Radial Impurity Distribution in Czochralski-Grown Single-Crystal Silicon Damien Gilmore    2008 The origins of metal impurities in Czochralski-grown single-crystal silicon were investigated in order to develop crystals with improved radial impurity homogeneity. The radial metallic impurity distribution in silicon crystals was evaluated by means of minority carrier recombination lifetime. The crystal circumference was found to be an area of degraded lifetime. A quantitative analysis of radial impurity distribution in silicon was carried out using deep level transient spectroscopy techniques... 查看全文

437   Hydroxyapatite particles as drug carriers for proteins Hydroxyapatite particles as drug carriers for proteins    2010 Recently, much attention has been paid to hydroxyapatite (HA) particles as protein drug carriers. HA is biological substance like tooth and bone, and HA has biodegradable and biocompatible property. Also HA has high affinity for versatile substances, such as proteins. The aim of this study was to prepare HA particles and to evaluate the effects of various experimental conditions on particles properties (i.e. shape and amount of protein adsorption to HA). HA particles were prepared by three metho... 查看全文

438   Preparation of mesoporous silica microspheres with multi-hollow cores and their application in sustained drug release Preparation of mesoporous silica microspheres with multi-hollow cores and their application in sustained drug release    2010 Mesoporous silica microspheres with multi-hollow cores (MSMMCs) were prepared by an O1/W/O2 double emulsion technique. When tetraethyl orthosilicate (TEOS) was hydrolyzed in the O1/W/O 2 double emulsion with P123 (a triblock copolymer with a formula of HO(CH2CH2O)20(CH2CH(CH 3)O)70(CH2CH2O)20H) dissolved in the aqueous phase, the internal oil droplets would serve as templates for the empty hollow cores, P123 function as templates for the mesopores in the shell, and the aqueous phase act as space... 查看全文

439   DYNAMICS OF GROUP FORMATION AND BEHAVIOR DYNAMICS OF GROUP FORMATION AND BEHAVIOR Maximiliano Vaacute;squez    2011 查看全文

440   Chemical-bonding structure of InP surface in MOVPE studied by surface photo-absorption Chemical-bonding structure of InP surface in MOVPE studied by surface photo-absorption Yasuyuki Kobayashi;Naoki Kobayashi    1996 Using surface photo-absorption spectra, we established a phase diagram of the surface chemical-bonding structure for the P-stabilized surface in InP metalorganic vapor phase epitaxy as a function of substrate temperature and PH3 partial pressure. At 550°C and PH3 partial pressures of 10 and 30 Pa, the surface is (2 × 4)-like consisting of P dimers having a bond axis parallel to [110]. As the substrate temperature decreases and the PH3 partial pressure increases, amorphous P spe... 查看全文

441   Space product development experiment module utilizing the ISS Space product development experiment module utilizing the ISS Christine Watson;Charles Lundquist;Francis Wessling;James Smith;Robert Naumann    0 Furnace facilities for materials processing on the International Space Station (ISS) will include the Space Product Development Experiment Module (SPDEM) which includes a transparent Furnace module and an opaque Furnace Module. The SPDEM is scheduled currently for UF-3 aboard the Materials Science Research Rack(MSRR). Various commercial interests can be satisfied sequentially by scheduled employment of the SPDEM. The CMDS will be the facility manager through whom arrangements can be made for SPD... 查看全文

442   Chemical polishing of garrets with phosphoric acid Chemical polishing of garrets with phosphoric acid D. C. Miller    1972 Phosphoric acid between 250 and 45O°C has been used to chemically polish as-sawn rare earth gallium garnet substrates, principally Gd3Ga5O12°. Yttrium aluminum garnet laser rods have also been successfully polished. Difficulties associated with phosphoric acid etching at high temperatures such as precipitate formation on the specimen surface and rapid deterioration of the acid bath due to dehydration and polymerization have been overcome by stabilizing the moisture cont... 查看全文

443   Considering all angles Considering all angles Amanda Spink and Tefko Saracevic    2007 查看全文

444   SUBJECTIVE AND OBJECTIVE METHODS FOR ESTIMATING DONENESS IN WATER-COOKED BROILER THIGHS SUBJECTIVE AND OBJECTIVE METHODS FOR ESTIMATING DONENESS IN WATER-COOKED BROILER THIGHS H. S. RAMASWAMY and M. A. TUNG    2006 查看全文

445   Influence of ionic liquid anion nature on the properties of Eu-containing luminescent materials Influence of ionic liquid anion nature on the properties of Eu-containing luminescent materials    2010 The 1-methyl-3-tetradecyl imidazolium ionic liquid (IL) with N(CN)2-, CF3SO3- and N(CF3SO2)2- anions doped with 1 mol% of [EuCl2Phen2(H2O)2]Cl·H2O complex were prepared and investigated. It was found that relatively large IL anion molecular volume promotes the formation of micro particles of europium complex. The influence of the IL anion nature on the optical properties of europium complex was studied by the analysis of the luminescence spectra and lifetime of europium excited states. The... 查看全文

446   PP 1/164 (3): Sprout suppressants in potato: at storage or in store application PP 1/164 (3): Sprout suppressants in potato: at storage or in store application THOMAS A. HOLLINGWORTH JR, CHARLES A. KAYSNER, KAREN G. COLBURN, JOHN J. SULLIVAN, CARLOS ABEYTA JR,    2010 This standard describes the conduct of trials for the efficacy evaluation of plant growth regulators used as sprout suppressants in potato. 查看全文

447   Controlled precipitation and purification of hemicellulose from DMSO and DMSO/water mixtures by carbon dioxide as anti-solvent Controlled precipitation and purification of hemicellulose from DMSO and DMSO/water mixtures by carbon dioxide as anti-solvent    2010 Anti-solvent precipitation of xylans and mannans from dimethylsulfoxide (DMSO) or DMSO/water mixtures, and subsequent drying with supercritical carbon dioxide (scCO2) were developed into a useful technique for preparing spherical hemicellulose micro-particles. Depending on the type of hemicellulose, water content of DMSO, precipitation pressure and temperature, the particle size can be adjusted within a wide range from less than 0.1 to more than 5 μm. For example, fast super-saturation which ... 查看全文

448   Human neutrophil alloantigen genotype frequencies among blood donors with Turkish and German descent Human neutrophil alloantigen genotype frequencies among blood donors with Turkish and German descent Maxime Charman, Freacute;deacute;ric Leacute;onardi, Seacute;bastien Dominguez, Ceacute;dric Bissuel    2011 Antibodies against the human neutrophil antigens (HNA) are able to stimulate transfusion reactions, autoimmune and neonatal neutropenia. The aim of this study was to determine the HNA allele frequencies in the largest ethnic minority group in Germany in comparison with the German population for predicting the risk of alloimmunization and associated transfusion reactions, as well as the risk of developing neonatal neutropenia for the newborn of racial mixed couples. However, there exists no data ... 查看全文

449   Effect of Time, Temperature, and Anticoagulant on Flow Cytometry and Hematological Values Effect of Time, Temperature, and Anticoagulant on Flow Cytometry and Hematological Values Maxime Charman, Freacute;deacute;ric Leacute;onardi, Seacute;bastien Dominguez, Ceacute;dric Bissuel    2006 查看全文

450   Injectable intratumoral depot of thermally responsive polypeptide-radionuclide conjugates delays tumor progression in a mouse model Injectable intratumoral depot of thermally responsive polypeptide-radionuclide conjugates delays tumor progression in a mouse model    2010 This study evaluated a biodegradable drug delivery system for local cancer radiotherapy consisting of a thermally sensitive elastin-like polypeptide (ELP) conjugated to a therapeutic radionuclide. Two ELPs (49kDa) were synthesized using genetic engineering to test the hypothesis that injectable biopolymeric depots can retain radionuclides locally and reduce the growth of tumors. A thermally sensitive polypeptide, ELP1, was designed to spontaneously undergo a soluble-insoluble phase transition (f... 查看全文

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