221   Development of Singularities of Solutions of Nonlinear Hyperbolic Partial Differential Equations Development of Singularities of Solutions of Nonlinear Hyperbolic Partial Differential Equations Peter D. Lax    0 In a recent paper Zabusky has given an accurate estimate of the time interval in which solutions of the nonlinear string equation y tt = c 2(1 + εy x)y xx exist. A previous numerical study of solutions of this equation disclosed an anomaly in the partition of energy among the various modes; Zabusky’s estimate shows that at the time when the anomaly was observed the solution does not exist. The proof of Zab... 查看全文

222   Synthesis of ESO/PR crosslinking resin and the mechanism of its water absorption resistance Synthesis of ESO/PR crosslinking resin and the mechanism of its water absorption resistance    2011 ESO/PR crosslinking resin (ESO-C-PR) was synthesized by etherization reaction of phenolic hydroxyl and chain extension reaction of ESO. SEM and thermal analysis were adopted to investigate the influences of etherization and chain extension on the micro-morphology and water absorption resistance of the ESO/PR crosslinking resins synthesized. The ESO chain extension polymer is incompatible with PR; however, grafting ESO chain to PR by etherization reaction improves their compatibility and forms cr... 查看全文

223   Impact of Pr on the properties of InP based layers for light sources and detectors Impact of Pr on the properties of InP based layers for light sources and detectors    2009 We report the optimization of LPE growth technique for the preparation of InP and GaInAsP high quality and high purity layers by using Pr purification effect. We have found that Pr addition into the growth melt leads to the reduction of the layer defect density by a half order of magnitude and carrier concentrations diminished to 1014 cm-3. Three types of p-n junction based radiation detection structures were prepared and their detection performance was assessed by using α-particles emitte... 查看全文

224   Preparation and properties of ESO/PR crosslinking resin with aromatic multiamine chain extender Preparation and properties of ESO/PR crosslinking resin with aromatic multiamine chain extender    2011 Epoxidized soybean oil/phenolic crosslinking resin (ESO-C-PR) with good toughness and thermal stability was synthesized by chain extension with aromatic multiamine. Influence of epoxidized soybean oil (ESO) content on its impact toughness, flexural strength, tensile strength and percentage of breaking-elongation was studied. Differential scanning calorimetry-thermogravimetric analyzers (DSC-TG) was used to characterize the thermal stability of ESO-C-PR and scanning electron microscopy (SEM) was ... 查看全文

225   Effect of Ti and C on crystallization process and magnetic properties of (Nd0.4Pr0.6)9 Fe76B15 melt-spun ribbons Effect of Ti and C on crystallization process and magnetic properties of (Nd0.4Pr0.6)9 Fe76B15 melt-spun ribbons    2008 (Nd0.4Pr0.6)9 Fe76B15 and (Nd0.4Pr0.6)9Fe72 Ti4B15-yCy (y = 0-4) ribbons were prepared by melt spinning. Effect of Ti and C on glass forming ability and crystallization process and magnetic properties of the ribbons were investigated. Glass forming ability (GFA) of the melt-spun ribbons was greatly promoted by the addition of Ti and C elements and increasing C content. The (Nd0.4Pr0.6)9Fe72 Ti4B11C4 ribbon melt-spun by 7m/s was only composed of amorphous phase. The magnetic properties of Br = 0.... 查看全文

226   Study on the magnetic properties, phase evolution and microstructure of PrxFe82.2-yTiyB 17.8-x (x=5-11.8; y=2.5-5.5) nanocomposites Study on the magnetic properties, phase evolution and microstructure of PrxFe82.2-yTiyB 17.8-x (x=5-11.8; y=2.5-5.5) nanocomposites    2006 Pr lean and boron-enriched ingots, i.e., PrxFe82.2-yTiyB 17.8-x (x=5 to 11.8; y=2.5 to 5.5), were adopted for preparing melt-spun ribbons with nanostructures. Based on thermal magnetic analysis (TMA), for y=2.5, two phases, namely Pr2Fe14B and α-Fe, were found for ribbons with x=8.9, 10.7 and 11.8, while additional two metastable phases, Pr2Fe23B3 and Fe3B, prevailed for x=6 and 7.1. With the decrease of Pr content, remanence increases but coercivity decreases. The optimal properties of Br... 查看全文

227   Study on preparation technique and properties of magnetostrictive epoxy bonded Tb1-xPrx(Fe0.4Co0.6) 1.93 composites Study on preparation technique and properties of magnetostrictive epoxy bonded Tb1-xPrx(Fe0.4Co0.6) 1.93 composites    2008 The magnetic and magnetostrictive properties of epoxy bonded Tb1-xPrx(Fe0.4Co0.6) 1.93 (0.85 [less-than or equal to] x [less-than or equal to] 1.00) composites, prepared with different epoxy proportions using cold compression-molding technique, were investigated. It is found that the optimal conditions were with a compaction pressure of 100 MPa and a mass ratio of resin to powder of 5:100. The Tb0.1Pr0.9(Fe0.4Co0.6)1.93 composite rod had a high magnetostriction of 770 ppm at an applied magnetic ... 查看全文

228   Subject Dedication Subject Dedication Elisah B. Lewis, Ph. D    2002 查看全文

229   A Study of Reversible γ-Induced Structural Transformations in Vitreous Ge23.5Sb11.8S64.7 by High-Resolution X-ray Photoelectron Spectroscopy A Study of Reversible γ-Induced Structural Transformations in Vitreous Ge23.5Sb11.8S64.7 by High-Resolution X-ray Photoelectron Spectroscopy Andriy Kovalskiy,† Himanshu Jain,*† Alfred C. Miller,† Roman Ya. Golovchak,†‡ and Oleh I. Shpotyuk†‡    2006 The structural origin of reversible γ-induced effects in vitreous Ge23.5Sb11.8S64.7 has been investigated by high-resolution X-ray photoelectron spectroscopy (XPS). The changes in valence band spectrum from γ-irradiation suggest a decrease of sulfur lone pair electron concentration accompanied by changes in bonding states of S and Ge. The appearance of additional doublets in the core-level XPS spectra of Ge, Sb, and S atoms for γ-irradiated sample is described by the formation of over- and un... 查看全文

230   Time regularity of the solutions to second order hyperbolic equations Time regularity of the solutions to second order hyperbolic equations Tamotu Kinoshita;Giovanni Taglialatela    2011 We consider the Cauchy problem for a second order weakly hyperbolic equation, with coefficients depending only on the time variable. We prove that if the coefficients of the equation belong to the Gevrey class gs0\gamma^{s_{0}} and the Cauchy data belong to gs1\gamma^{s_{1}}, then the Cauchy problem has a solution in gs0([0,T*];gs1(\mathbbR))\gamma^{s_{0}}([0,T^{*}];\gamma^{s_{1}}(\mathbb{R})) for some T ... 查看全文

231   www.cosc.brocku.ca Subject-Based File-Link System for the Web www.cosc.brocku.ca Subject-Based File-Link System for the Web Tomoharu Arakawa, Jerzy A. Barchanski, Tomoharu Arakawa, Jerzy A. Barchanski    2003 The system described in this paper is a kind of directory system designed for organizing files on the Internet based on subjects and for sharing information among a group of people. The system consists of a server program and a client-side browser. The server program is a module of an Apache web server while the client-side browser is a web page with functions enabled by JavaScript. The system creates XML files, each of which acts as a node in a logical tree structure and stores them on the serv... 查看全文

232   Stabilization Results of Second-Order Systems with Delayed Positive Feedback Stabilization Results of Second-Order Systems with Delayed Positive Feedback Wojciech Mitkowski;Paweł Skruch    0 Oscillation and nonoscillation criteria are established for second-order systems with delayed positive feedback. We consider the stability conditions for the system without damping and with gyroscopic effect. A general algorithm for finding stability regions is proposed. Theoretical and numerical results are presented for single-input single-output case. These results improve some oscillation criteria of [1], [2] and [6]. 查看全文

233   The effect of geometry of the tibial polyethylene insert on the tibiofemoral contact kinematics in Advance Medial Pivot total knee arthroplasty The effect of geometry of the tibial polyethylene insert on the tibiofemoral contact kinematics in Advance Medial Pivot total knee arthroplasty Go Omori, Naoaki Onda, Masashi Shimura, Toyohiko Hayashi, Takashi Sato;Yoshio Koga    2009 Background  In modern total knee arthroplasty (TKA), it is important to reproduce both medial pivot motion and posterior femoral rollback to obtain greater postoperative knee flexion. Several studies have reported the factors affecting knee motion and range of motion after TKA. The purpose of this study was to evaluate the effect of the tibial insert geometry on the tibiofemoral contact kinematics, especially focusing on the medial pivot motion... 查看全文

234   Intact parathyroid hormone in primary hyperparathyroidism Intact parathyroid hormone in primary hyperparathyroidism    2005 In 49 patients with primary hyperparathyroidism, intact parathyroid hormone (PTH) was measured with a recently developed immuno-radiometric assay, and midregional PTH fragments (sequence 44–68) were measured with an established radioimmunoassay technique. In 47 normal subjects, the concentration of intact PTH ranged from 2·0 to 6·8pmol/l, and in 49 patients with primary hyperparathyroidism it ranged from 6·4 to 80·0 pmol/l. In contrast, midregional PTH fragments... 查看全文

235   D. Perspektiven D. Perspektiven Maike Kuhn    0 Die beiden Ebenen Europarecht und V?lkerrecht sollen schlie?lich zusammengeführt werden, indem m?gliche Perspektiven der ESVP beleuchtet werden. Dazu wird zun?chst die Milit?roperation in Kongo zusammenfassend rechtlich eingeordnet, um dann Leitlinien für zukünftige Eins?tze der EU aufzustellen. 查看全文

236   Adverse effect of noise in the operating theatre on surgical-site infection (Br J Surg 2011; 98: 1021–1025) Adverse effect of noise in the operating theatre on surgical-site infection (Br J Surg 2011; 98: 1021–1025) DARIO GALANTE, GIUSEPPE PELLICO, SALVATORE MEOLA, ANTONIO CASO, ANTONELLA DE CAPRARIS, ROSELLA MILIL    2011 查看全文

237   Isothermal Thickening and Thinning Processes in Low-Molecular-Weight Poly(ethylene oxide) Fractions Crystallized from the Melt. 8. Molecular Shape Dependence§ Isothermal Thickening and Thinning Processes in Low-Molecular-Weight Poly(ethylene oxide) Fractions Crystallized from the Melt. 8. Molecular Shape Dependence§ Er-Qiang Chen, Song-Wook Lee, Anqiu Zhang, Bon-Suk Moon, Ian Mann, Frank W. Harris, and Stephen Z. D    1999 Three- and four-arm poly(ethylene oxide) (PEOs) fractions have been synthesized to investigate the molecular shape dependence on polymer crystallization, melting, and annealing behaviors. Each arm in these star PEOs has a molecular weight (MW) of 2220 (Ma = 2220) and has been coupled using 1,3,5-benzene tricarbonyl trichloride and 1,2,4,5-benzene tetracarboxylic acid. Molecular parameters have been characterized via vapor pressure osmometry, gel permeation chromatography, light scattering, and F... 查看全文

238   Self-standing integrative cell with an inorganic separator for lithium-ion battery stacks Self-standing integrative cell with an inorganic separator for lithium-ion battery stacks Jingjuan Chen, Hongfa Xiang, Le Zhang;Haihui Wang    0 An integrative cell with a porous Al2O3 membrane as both a support and a separator has been fabricated. LiFePO4 and graphite were coated onto the both sides of the rigid porous Al2O3 separator, while an electrolyte was infiltrated inside. The LiFePO4/graphite integrative cells were evaluated in coin-type cells and exhibited good cycle capacity. The self-standing integrative cell was a simple and promising technology to assemble the battery stacks and meanwhile had an obvious advantage... 查看全文

239   The balloon dilation of the pulmonary valve during early repair of tetralogy of Fallot† The balloon dilation of the pulmonary valve during early repair of tetralogy of Fallot† DARIO GALANTE, GIUSEPPE PELLICO, SALVATORE MEOLA, ANTONIO CASO, ANTONELLA DE CAPRARIS, ROSELLA MILIL    2012 Progressive pulmonary valve (PV) regurgitation leads to right ventricular failure after repair of tetralogy of Fallot (TOF). We sought to evaluate our results with the preservation of the PV in selected patients with TOF. 查看全文

240   Accumulation of carbon dioxide under ophthalmic drapes during eye surgery: a comparison of three different drapes Accumulation of carbon dioxide under ophthalmic drapes during eye surgery: a comparison of three different drapes Erhan #x130;. Alt#x131;no#x11f;lu and James H. Adair    2002 Carbon dioxide accumulation under ophthalmic drapes is caused by their impaired permeability to exhaled carbon dioxide in spontaneously breathing patients. Three different ophthalmic drapes were examined under clinical conditions. Sixty unpremedicated patients of each gender, aged over 60 years and with an ASA status of I–III undergoing cataract surgery under retrobulbar anaesthesia were included in the study. Patients with known pulmonary diseases were excluded. The patients were div... 查看全文

241   Prekäre Lebenslagen und Krisen. Strategien zur individuellen Bewältigung Prekäre Lebenslagen und Krisen. Strategien zur individuellen Bewältigung Hans-Jurgen Balz    0 In der Erforschung prek?rer Lebenslagen und Krisen sind Fragen der Entwicklungs-, Sozial- und der Klinischen Psychologie berührt. Der psychischen Verarbeitung von belastenden Lebensereignissen widmet sich insbesondere die Stress- und Copingforschung. Bei der Erkl?rung der Unterschiede im Erleben und Verhalten der betroffenen Personen finden sich zwei Richtungen: Ans?tze, die den Focus auf Aspekte der individuellen Situationseinsch?tzung (appraisal) richten, steh... 查看全文

242   From Generalized Clifford Algebras to nambu’s formulation of dynamics From Generalized Clifford Algebras to nambu’s formulation of dynamics Robert M. Yamaleev    2000 We consider a commutative part of the Generalized Clifford Algebras, denominated asalgebra of multicomplex numbers. By using the multicomplex algebra as underlying algebraic structure we construct oscillator model for the Nambu’s formulation of dynamics. We propose a new dynamicals principle which gives rise to two kinds of Hamilton-Nambu equations inD≥2-dimensional phase space. The first one is formulated with (D−1)-evolution parameter and a single Hamiltonian. The Han... 查看全文

243   Effect of sedation on visual sensations in patients undergoing cataract surgery under topical anaesthesia: a prospective randomized masked trial Effect of sedation on visual sensations in patients undergoing cataract surgery under topical anaesthesia: a prospective randomized masked trial    2011 Purpose: The main aim of the study was to determine whether intravenous sedation with midazolam reduces the ability of patients to see during cataract surgery performed under topical anaesthesia. We also sought to determine the effects of sedation on patient’s level of disturbance to the microscope light and visualization of surgical instruments and on the overall of experience of the patients during surgery. 查看全文

244   Student - Centered Approaches to Practicum Supervision Student - Centered Approaches to Practicum Supervision Gabriel A Planes, Mariacute;a C Miras and Cesar Barbero    2012 查看全文

245   Convergence Results for Forchheimer’s Equations for Fluid Flow in Porous Media Convergence Results for Forchheimer’s Equations for Fluid Flow in Porous Media Yan Liu, Yi Du;Changhao Lin    2010 The Forchheimer equations for non-slow flow in a saturated porous medium are studied. We prove the convergence results for both the first and the second Forchheimer coefficients. 查看全文

246   Nematic Solvation of Segmented Polymer Chains Nematic Solvation of Segmented Polymer Chains S. Link,† D. Hu,‡ W.-S. Chang,† G. D. Scholes,§ and P. F. Barbara*†    2005 We examine the effect of polymer chain segmentation on the recently discovered ability of nematic solvents to elongate and align polymer chain solutes. Coordinated single molecule spectroscopy and beads-on-a-chain simulations are used to study the orientational and conformational order of a series of segmented conjugated polymers, dissolved in the nematic liquid crystal 5CB. The order parameters for alignment and elongation are both observed to decrease with increasing segmentation, reflecting a... 查看全文

247   The Role of Occupational Therapy in Palliative Care The Role of Occupational Therapy in Palliative Care CARL LLOR, CAROLINA BAYONA, SILVIA HERNAacute;NDEZ, ANA MORAGAS and MARC MIRAVITLLES    2010 The purpose of this paper is to define the role of occupational therapy in palliative care, to describe the services currently available in the metropolitan area of Perth, Western Australia, and to make recommendations for the extension of occupational therapy services in the area of palliative care. The literature regarding occupational therapy in palliative care is reviewed; The results of interviews with occupational therapists and patients currently involved in palliative care are analysed; ... 查看全文

248   Influence of the Surfactant Chain Length on the Fluorescence Properties of a Water-Soluble Conjugated Polymer Influence of the Surfactant Chain Length on the Fluorescence Properties of a Water-Soluble Conjugated Polymer Marco Laurenti, Jorge Rubio-Retama*, Francisco Garcia-Blanco and Enrique López-Cabarcos    2008 In this work, we report the influence of surfactant chain length and surfactant concentration on the photoluminescence (PL) of water-soluble π-conjugated poly(thienyl ethylene oxide butyl sulfonate) (PTE-BS). We have used alkylammomium surfactants with 8, 9, 10, and 12 carbon atoms per hydrocarbon chain. The surfactant concentration was varied from 0.125 the critical micelle concentration (CMC) up to 2 times the CMC. The results show that at premicellar concentrations all the surfactants promot... 查看全文

249   A metric of biodiversity that integrates abundance, phylogeny, and function A metric of biodiversity that integrates abundance, phylogeny, and function    2012 A metric of biodiversity is proposed that combines three of its key components: abundance, phylogeny, and ecological function. This metric is an expansion of the current abundance-based metric that uses Hill numbers, the effective number of types in a sample if all types had the same mean proportional abundance. I define analogous proportional measures of phylogenetic divergence and functional distinctiveness. Phylogenetic divergence is measured as the sum of the proportional share of each speci... 查看全文

250   Intraoperative risk factors associated with hepatic resection Intraoperative risk factors associated with hepatic resection Kelly M. McMasters, R. Dirk Noyes, Douglas S. Reintgen, James S. Goydos, Peter D. Beitsch, B. Scott    2005 Risk factors associated with complications following hepatic resection were investigated retrospectively in 121 patients between January 1987 and April 1992. Fifty-seven patients recovered uneventfully, but 64 suffered postoperative complications and 15 died within 3 months. All those who died had suffered from hyperbilirubinaemia or bleeding and/or coagulopathy, which were considered critical complications after hepatic resection. Risk factors following hepatic resection were investigated stati... 查看全文

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