481   Introduction and Explanatory Notes Introduction and Explanatory Notes SUVENDU BHATTACHARYA, GOUR S. CHOUDHURY and STACY STUDEBAKER    2006 查看全文

482   Preparation and characterization of monosized germanium micro particles by pulsated orifice ejection method Preparation and characterization of monosized germanium micro particles by pulsated orifice ejection method    2007 Monosized germanium micro particles are prepared by a newly developed Pulsated Orifice Ejection Method (POEM). The obtained particles are categorized into two kinds of the microstructures as refined and coarse ones. The morphological difference is estimated to be determined by the undercooling level during nucleation. Actually, the increase in the temperature of the melt was effective in coarsening the microstructure, because the temperature of the melt intensely relates to the undercooling leve... 查看全文

483   Walnut-like CdS micro-particles/single-walled carbon nanotube hybrids: One-step hydrothermal route to synthesis and their properties Walnut-like CdS micro-particles/single-walled carbon nanotube hybrids: One-step hydrothermal route to synthesis and their properties    2010 This work explores the synthesis of walnut-like CdS micro-particles (MPs)/single-walled carbon nanotube (SWCNT) hybrids via one-step hydrothermal methods and their optical and optoelectronic properties. The mechanism of stable attachment to obtain a CdS MPs composite material is revealed. To overcome the specific problem of the short sensor lifetimes of electrochemical gas sensors resulting from that the electrolyte inside the sensor dries out over a period of time, we try to investigate the ele... 查看全文

484   A rippled-pattern trichoblastoma: an immunohistochemical study A rippled-pattern trichoblastoma: an immunohistochemical study    2001 Background: Since the first description by Hashimoto et al., there have been only a few case reports of rippled-pattern tricogenic tumor. In addition, there are no reports on detailed immunohistochemical analyses of this rare neoplasm. We describe here an additional case of rippled-pattern trichogenic tumor with a special reference to its immunohistochemical features. 查看全文

485   Palatability of Ground Beef Home Frozen and Stored in Selected Wraps† Palatability of Ground Beef Home Frozen and Stored in Selected Wraps† SUVENDU BHATTACHARYA, GOUR S. CHOUDHURY and STACY STUDEBAKER    2009 A survey of household practices in wrapping, freezing, and storing ground beef was used as the basis for planning a laboratory study of the effects of packaging materials on palatability and weight loss of ground beef patties frozen and stored at -18°C. (0°F.) and at −9°C. (15°F.). Quality was monitored at 0-, 1-, 2-, 3-, 4-, 6-, and 12-week intervals. 查看全文

486   Collision Cross Sectional Areas from Analysis of Fourier Transform. Ion Cyclotron Resonance Line Width: A New Method for Characterizing Molecular Structure Collision Cross Sectional Areas from Analysis of Fourier Transform. Ion Cyclotron Resonance Line Width: A New Method for Characterizing Molecular Structure Fan Yang, Jacob E. Voelkel, and David V. Dearden*    2012 We demonstrate a technique for determining molecular collision cross sections via measuring the variation of Fourier transform. ion cyclotron resonance (FTICR) line width with background damping gas pressure, under conditions where the length of the FTICR transient is pressure limited. Key features of our method include monoisotopic isolation of ions, the pulsed introduction of damping gas to a constant pressure using a pulsed leak valve, short excitation events to minimize collisions during the... 查看全文

487   Tack in urethane elastomers Tack in urethane elastomers A. K. Sharma and Ch. Ramu    2003 The phenomenon of tack has been studied in urethane-urea elastomers prepared from polyether or polyester prepolymers and 4,4′-methylenebis(2-chloroaniline). It is shown that tack at zero elongation is attained only in polymers in which the flexible chains, i.e., polyesters or polyethers, contain 50 chain links or more. This coincides with the requirements for the Gaussian vector function in elastomers. The results suggest that, in the absence of flexible chain ends in these polymers, tack ... 查看全文

488   Ultrafast Dissociation Dynamics of Ferrocene and [3]-Ferrocenophan† Ultrafast Dissociation Dynamics of Ferrocene and [3]-Ferrocenophan† M. Clara and H. J. Neusser*    2001 We present pump?probe results for ferrocene and [3]-ferrocenophan measured with two 200-fs UV laser pulses of different wavelengths. The molecules are excited by single-photon absorption to a fast decaying intermediate state and ionized by absorption of a second photon. The so-produced parent cations can absorb further photons until their internal energy is sufficient to open different fragmentation channels. Because of the broad absorption spectra of ferrocene, each laser pulse can act as a pum... 查看全文

489   A combined occurrence of neuroendocrine carcinoma of the skin and a benign appendageal neoplasm A combined occurrence of neuroendocrine carcinoma of the skin and a benign appendageal neoplasm L. Micheletti, M. Preti, F. Bogliatto, M.C. Zanotto-Valentino, B. Ghiringhello and M. Massobrio    2006 A 76-year-old Japanese male presented with a subcutaneous nodule in the dorsal cubital region of the right arm. The center of the nodule showed typical features of neuroendocrine carcinoma of the skin. The peripheral portion showed epithelial islands of squamoid cells with horn cysts suggestive of benign appendageal tumor with pilar differentiation. The coexistence of two skin neoplasms in the same lesion would suggest that both tumors developed from common pluripotential stem cell. 查看全文

490   Global Simulation of Coupled Carbon and Oxygen Transport in a Unidirectional Solidification Furnace for Solar Cells Global Simulation of Coupled Carbon and Oxygen Transport in a Unidirectional Solidification Furnace for Solar Cells B. Gao    2010 For an accurate prediction of carbon and oxygen impurities in multicrystalline silicon material for solar cells, global simulation of coupled oxygen and carbon transport in a unidirectional solidification furnace was implemented. Both the gas flow and silicon melt flow were considered. Five chemical reactions were included during the transportation of impurities. The simulation results agreed well with experimental data. The effects of flow rate and pressure on the impurities were examined. An i... 查看全文

491   Anti-keratin monoclonal antibodies: production, specificities and applications Anti-keratin monoclonal antibodies: production, specificities and applications L. Micheletti, M. Preti, F. Bogliatto, M.C. Zanotto-Valentino, B. Ghiringhello and M. Massobrio    2006 查看全文

492   DEVELOPMENT OF SUCROSE INVERSION KINETICS UNDER CONTINUOUS FLOW CONDITIONS DEVELOPMENT OF SUCROSE INVERSION KINETICS UNDER CONTINUOUS FLOW CONDITIONS M. Sami Selim, M. A. Al-Naafa and M. C. Jones    2007 Reaction kinetic data for the acid hydrolysis of sucrose were generated during continuous flow thermal treatment. Predicted levels of hydrolysis were calculated using batch-generated kinetic parameters and the equivalent point method of thermal evaluation. Actual and simulated levels of hydrolysis were linearly correlated (r > 0.98). Evaluation of hydrolysis data for isothermal and non-isothermal operations, using the equivalent point method supported first order kinetics, and yielded Arrheni... 查看全文

493   Modification of chlorinated poly(vinyl chloride) by blending with epoxidized polybutadiene Modification of chlorinated poly(vinyl chloride) by blending with epoxidized polybutadiene Franccedil;ois Rietsch    2003 The compatibility of epoxidized poly(cis-1,4-butadiene) (EPB) with chlorinated polyvinylchloride (CPVC) was investigated. Blends studied covered the complete composition range using EPB at two degrees of epoxidation: 20 and 43 mol % oxirane units. Tensile properties of EPB (63)/CPVC were also studied at the 50/50 composition. Dynamic mechanical analysis (DMA) showed that both sets of blends were miscible at the segmental level except for the rich CPVC compositions. All blends showed good tensile... 查看全文

494   Carbon Optically Transparent Electrodes for Electrogenerated Chemiluminescence Carbon Optically Transparent Electrodes for Electrogenerated Chemiluminescence E. Kate Walker, David A. Vanden Bout*, and Keith J. Stevenson*    2011 This study investigates pyrolyzed photoresist film (PPF)-based carbon optically transparent electrodes (C-OTEs) for use in electrogenerated chemiluminescence (ECL) studies. Oxidative–reductive ECL is obtained with a well-characterized ECL system, C8S3 J-aggregates with 2-(dibutylamino)ethanol (DBAE) as coreactant. Simultaneous cyclic voltammograms (CVs) and ECL transients are obtained for three thicknesses of PPFs and compared to nontransparent glassy carbon (GC) and the conventional transparent 查看全文

495   Hybrid cysts: A clinicopathological study of seven cases Hybrid cysts: A clinicopathological study of seven cases    2010 Hybrid cysts develop from more than two components of the pilosebaceous unit. The pathogenesis of this unusual disease has not yet been elucidated. The aim of this study was to assess the clinical and histopathological features of hybrid cysts. Histological sections of seven cases indexed as hybrid cysts were reviewed from 1996–2009 at the Department of Dermatology, Eulji Medical Center, Seoul, Korea. Hospital charts and slides were retrospectively evaluated. All cases had a combination of... 查看全文

496   Time–temperature dependency of mode II fracture toughness for bisphenol A type epoxy resin Time–temperature dependency of mode II fracture toughness for bisphenol A type epoxy resin Kollengode S. Venkataraman and Robert A. DiMilia    2005 We investigated the mode II fracture toughness (KIIc) with time and temperature dependence of the bisphenol A type of epoxy resin. We performed an asymmetric four-point bending test under various conditions of temperature and displacement rate. We found that KIIc strongly depended on the displacement rate and the temperature, even at room temperature. Moreover, it was governed by the time–temperature equivalence principle in regard to the fracture time. The time–temperature dependenc... 查看全文

497   Some elastic effects in the capillary extrusion of polyethylene Some elastic effects in the capillary extrusion of polyethylene Franccedil;ois Rietsch    2003 查看全文

498   Effect of Malting Conditions on Pearl Millet Malt Quality Effect of Malting Conditions on Pearl Millet Malt Quality Kollengode S. Venkataraman and Robert A. DiMilia    2012 The effect of malting conditions on pearl millet malt quality in two varieties, SDMV 89004 and SDMV 91018, was investigated. Grain was steeped and germinated at four temperatures, 20°, 25°, 30° and 35°C, over 5 days. Generally, malt quality parameters (percentage of roots and shoots, diastatic power (DP), - and β-amylase activity, free -amino nitrogen (FAN), and malting loss) were significantly affected (P < 0.001) by germination temperature and time, as well as by variet... 查看全文

499   Postural adjustments and bearing angle use in interceptive actions Postural adjustments and bearing angle use in interceptive actions Ambreen Chohan, Geert J. P. Savelsbergh, Paulien van Kampen, Marline Wind;Martine H. G. Verheul    2006 The experiment investigates the effect of ball velocity and walking direction on the adherence to the bearing angle (BA) strategy in adults. Adult participants (N=12) approached a moving ball in order to manually intercept it at a predefined target area. Results revealed that during locomotion the BA strategy was implemented, but on reaching the point of interception, this strategy broke down and the BA strategy of the wrist compensated for the movement requirements relative to the ball velocity... 查看全文

500   A High Temperature Electric Tube Furnace A High Temperature Electric Tube Furnace J. W. Gartland    2008 The details of construction of a practical, electrically heated carbon tube furnace are described. The furnace may be rapidly heated to 3,000° C, or any lower temperature and held within ±20° C of any end temperature for several hours. A uniform. black body chamber of at least 15 in. (380 mm.) length and 2 in. (51 mm.) diameter is provided having a capacity of 300 to 500 grams of charge. Volt-ampere characteristics and energy values are given which are valid for the design of larg... 查看全文

501   Epoxy adhesives modified with nano- and microparticles for in situ timber bonding: Effect of environment on mechanical properties and moisture uptake Epoxy adhesives modified with nano- and microparticles for in situ timber bonding: Effect of environment on mechanical properties and moisture uptake    2010 The environmental stability of three room temperature cure epoxy adhesives was evaluated following exposure to temperatures of 20°C, 30°C, and 50°C at 95%RH, to 50°C in air and soaked in water for up to 90 days. The adhesives contained nano- and microparticles and were especially formulated for bonded-in timber connections, and the properties of bulk adhesives and adhesively bonded block shear specimens were evaluated. After 90 days of aging the results demonstrate critical tempe... 查看全文

502   EVALUATION of CONTINUOUS THERMAL PROCESSES USING THERMOCOUPLE DATA and CALIBRATING REACTIONS EVALUATION of CONTINUOUS THERMAL PROCESSES USING THERMOCOUPLE DATA and CALIBRATING REACTIONS JOHN HENRY WELLS and R. PAUL SINGH    2007 Twelve continuous thermal processes were evaluated with the equivalent point method based on time-temperature histories and the destruction of Blue #2 at four different pH's to provide different kinetic parameters as calibrating reactions. the Arrhenius kinetic parameters for the four reactions were estimated under continuous flow conditions. Three were used as calibrating reactions to determine the equivalent times and temperatures for each process. the loss of blue #2 for the fourth was estima... 查看全文

503   Some Thoughts on Experimental Electric Arc Furnace Smelting Some Thoughts on Experimental Electric Arc Furnace Smelting H. S. Newhall    2008 In electric smelting research, conditions, equipment, materials, temperatures, etc., should be as nearly as possible those most probably required on full-scale operation. The discussion covers furnace design, choice of phase, electrodes, refractories, sizing of charge components, and interpretation of experimental results. 查看全文

504   TIME-TEMPERATURE INDICATORS IN MONITORING THE DISTRIBUTION OF FROZEN FOODS† TIME-TEMPERATURE INDICATORS IN MONITORING THE DISTRIBUTION OF FROZEN FOODS† JOHN HENRY WELLS and R. PAUL SINGH    2007 The quality and shelf-life of frozen foods are directly related to the manner in which these are handled. These problems can be minimized through both educational efforts such as printing materials, film presentations, etc., and technical programs. 查看全文

505   Large-Scale Laboratory Production of Ductile Zirconium Large-Scale Laboratory Production of Ductile Zirconium W. J. Kroll    0 On the basis of results obtained from small-scale laboratory work, equipment for the production of 60 pounds of zirconium sponge a cycle has been placed in operation.Zirconium carbide, prepared from zircon and carbon in an electric arc furnace, is chlorinated in improved equipment capable of producing over 300 pounds a day. The raw zirconium chloride is purified in a unit which accommodates nearly 200 pounds. Reduction by magnesium is carried out in the same furnace as the purification. Excess m... 查看全文

506   Highly Reactive Porphyrin−Iron−Oxo Derivatives Produced by Photolyses of Metastable Porphyrin−Iron(IV) Diperchlorates Highly Reactive Porphyrin−Iron−Oxo Derivatives Produced by Photolyses of Metastable Porphyrin−Iron(IV) Diperchlorates Zhengzheng Pan, Qin Wang, Xin Sheng, John H. Horner and Martin Newcomb    2009 Photolyses of metastable porphyrin?iron(IV) diperchlorates in laser flash photolysis reactions gave highly reactive transients. The systems studied were 5,10,15,20-tetraphenylporphyrin (TPP), 5,10,15,20-tetramesitylporphyrin (TMP), and 2,3,7,8,12,13,17,18-octaethylporphyrin (OEP). The new species, which decayed within milliseconds in acetonitrile solutions, were shown to react with organic substrates by oxo-transfer reactions involving insertions into carbon?carbon double bonds of alkenes and st... 查看全文

507   Measuring Problems and Techniques at A-C Furnace Arcs Measuring Problems and Techniques at A-C Furnace Arcs W. E. Schwabe    0 A quantitative investigation of an a-c electric furnace arc is dependent upon measurement of the true arc voltage. The electrical resistance of an a-c arc is a function of many variables including current, arc length, electrode composition, furnace atmosphere, and temperature. Experimental procedures specially adapted to arc voltage measurement have been evolved and are described, together with a unique circuit which automatically compensates an inherent measurement error. 查看全文

508   Co-poly(vinyl chloride-vinyl acetate-vinyl alcohol)-silica nanocomposites from sol–gel process: Morphological, mechanical, and thermal investigations Co-poly(vinyl chloride-vinyl acetate-vinyl alcohol)-silica nanocomposites from sol–gel process: Morphological, mechanical, and thermal investigations    2012 Organic–inorganic nanocomposites consisting of co-poly(vinyl chloride-vinyl acetate-vinyl alcohol) and silica were prepared via sol–gel process. Two types of hybrids were prepared, one in which interactions between hydroxyl group present in the copolymer chain and silanol groups of silica network were developed. In the second set, extensive chemical bonding between the phases was achieved through the reaction of hydroxyl groups on the copolymer chains with 3-isocyanatopropyltriethoxy... 查看全文

509   Controlled Preparation and X-Ray Investigation of Cadmium Sulfide Controlled Preparation and X-Ray Investigation of Cadmium Sulfide F. Schossberger    2006 A furnace for the controlled preparation of cadmium sulfide (CdS) by the vapor phase method is described. A constant rate of evaporation of the cadmium metal is maintained so that any changes in the ratio of Cd to S, or in the speed of reaction, can be made. Inserts fitted into the reaction tube allow the quick removal of the formed CdS without cooling the furnace. By controlled operation of the reaction furnace, a uniform. crystal habit was obtained. X-ray diffraction analysis showed lattice im... 查看全文

510   Polymer crosslinking controlled by release of catalyst encapsulated in polycarbonate micro-spheres Polymer crosslinking controlled by release of catalyst encapsulated in polycarbonate micro-spheres    2004 EVA crosslinking by ester-silane exchange reaction, controlled by catalyst released from polycarbonate micro-particles, was studied from rheological experiments. Firstly, dibutyltin dilaurate in polycarbonate (PC) (DBTDL) catalyst was encapsulated in polycarbonate micro-particles by an emulsion process. These PC micro-particles have a trimodal size distribution with a mean diameter around 25 μm. Furthermore, scanning electronic microscopy analysis revealed that the DBTDL catalyst is homogeneo... 查看全文

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