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Study of Thermodynamics of Liquid Noble-metals Alloys Through a Pseudopotential Theory

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Communications in Theoretical Physics 2010年第9期54卷 551-558页

作者： Aditya m.Vora Humanities and Social Science Department S.T.B.S.College of Diploma Engineering

The Gibbs-Bogoliubov (GB) inequality is applied to investigate the thermodynamic properties of someequiatomic noble metal alloys in liquid phase such as Au-Cu,Ag-Cu,and Ag-Au using well recognized *** description of the structure,well known Percus-Yevick (PY) hard sphere model is used as a *** applying a variation method the best hard core diameters have been found which correspond to minimumfree *** this procedure the thermodynamic properties such as entropy and heat of mixing have been *** influence of local held correction function viz;Hartree (H),Taylor (T),Ichimaru-Utsumi (IU),farid et al.(F),and Sarkar et al.(S) is also *** computed results of the excess entropy compares favourably in the caseof liquid alloys while the agreement with experiment is poor in the case of heats of *** may be due to thesensitivity of the heats of mixing with the potential parameters and the dielectric function.

关键词： Gibbs-Bogoliubov (GB) inequality liquid noble metals binary alloys pseudopotential method Percus-Yevick (PY) hard sphere model local field correction functions thermodynamic properties

Luminescent polymer electrolytes based on chitosan and containing europium triflate

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Journal of Rare Earths 2016年第7期34卷 661-666页

作者： R.Alves A.S.S.de Camargo A.Pawlicka m.m.Silva Center of Chemistry University of MinhoGualtar4710-057 BragaPortugal Sao Carlos Institute of Physics University of Sao Paulo13566-590 Sao Carlos-SPBrazil Sao Carlos Institute of Chemistry University of Sao Paulo13566-590 Sao Carlos-SPBrazil

Solid polymer electrolytes based on chitosan and europium triflate were prepared by solvent casting and characterized by X-ray diffraction, scanning electron microscopy （SEm）, atomic force microscopy （AFm）, and photoluminescence spectroscopy. The X-ray diffraction exhibited that the samples were essentially amorphous with organized regions over the whole range of the salt content studied. The AFm analysis demonstrated that the smoother sample had roughness of 4.39 nm. Surface visualization through SEm revealed good homogeneity without any phase separation for more conductive samples and the less conductive showed some im- perfections on the surface. The emission and excitation spectra displayed the characteristic bands of Eu（CF3SO3）3 in addition to broad bands corresponding to the polymer host. The excited state 5D0 lifetime values ranged from 0.29-0.37 ms for the studied samples.

关键词： solid polymer electrolytes natural polymers photoluminescence spectroscopy rare earths

The 3D Inverse Problem of the Wave Equation for a General multi-connected Vibrating membrane with a Finite Number of Piecewise Smooth Boundary Conditions

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Acta mathematica Sinica,English Series 2005年第4期21卷 733-752页

作者： E.m.E.ZAYED mathematics Department Faculty of ScienceZagazig UniversityZagazig.Egypt

The trace of the wave kernel μ（t） =∑ω=1^∞ exp（-itEω^1/2）, where {Eω}ω^∞=1 are the eigenvalues of the negative Laplacian -△↓2 = -∑k^3=1 （δ/δxk）^2 in the （x^1, x^2, x^3）-space, is studied for a variety of bounded domains, where -∞ 〈 t 〈 ∞ and i= √-1. The dependence of μ （t） on the connectivity of bounded domains and the Dirichlet, Neumann and Robin boundary conditions are analyzed. Particular attention is given for a multi-connected vibrating membrane Ω in Ra surrounded by simply connected bounded domains Ω j with smooth bounding surfaces S j （j = 1,……, n）, where a finite number of piecewise smooth Dirichlet, Neumann and Robin boundary conditions on the piecewise smooth components Si^＊（i = 1 ＋ kj-1,……, kj） of the bounding surfaces S j are considered, such that S j = ui-1＋kj-1^kj Si^＊, where k0=0. The basic problem is to extract information on the geometry Ω by using the wave equation approach from a complete knowledge of its eigenvalues. Some geometrical quantities of Ω （e.g. the volume, the surface area, the mean curvuture and the Gaussian curvature） are determined from the asymptotic expansion ofexpansion of μ（t） for small │t│.

关键词： Inverse problem Wave kernal Eigenvalues Greens function multi-connected vibrating membrane Negative Laplacian Heat kernel

Trivial and Simple Spectrum for SL(d,R) Cocycles with Free Base and Fiber Dynamics

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Acta mathematica Sinica,English Series 2015年第7期31卷 1113-1122页

作者： mrio BESSA Paulo VARANDAS Departamento de matemtica Universidade da Beira InteriorRua Marquês d'vila e Bolama6201-001 CovilhPortugal Departamento de matemtica Universidade Federal da BahiaAv.Ademar de Barros s/n40170-110 SalvadorBrazil

Let ACD（m, SL（d,R）） denote the pairs （f, A） so that f∈ A C Diff^1（m） is a C^1-Anosov transitive diffeomorphisms and A is an SL（d,R） cocycle dominated with respect to f. We prove that open and densely in ACD（m, SL（d,R））, in appropriate topologies, the pair （f,A） has simple spectrum with respect to the unique maximal entropy measure μf. Then, we prove prevalence of trivial spectrum near the dynamical cocycle of an area-preserving map and also for generic cocycles in AUtLeb（m） × LP（m, SL（d, R））.

关键词： Linear cocycles Lyapunov exponents Anosov diffeomorphisms topological conjugacy,maximal entropy measures

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颞叶癫:定量磁共振容积分析检测海马萎缩

国际医学放射学杂志 2012年第5期 488-489页

作者： N.farid H.m.Girard N.kemmotsu m.E.Smith S.W.magda W.Y.Lim 朱湘文 Department of Radiology University of CaliforniaSan Diego8950 Villa La Jolla DrSuite C101La JollaCA 92037

摘要目的明确全自动磁共振容积分析法显示海马萎缩的能力,并对颞叶癫日(TLE)病人准确定位癫日灶提供帮助。材料与方法本研究得到了机构评审委员会的支持,符合HIPAA法案。对34例颞叶癫日病人及116名对照者mR成像容积数据进行分析。结构... 详细信息

摘要目的明确全自动磁共振容积分析法显示海马萎缩的能力,并对颞叶癫日(TLE)病人准确定位癫日灶提供帮助。材料与方法本研究得到了机构评审委员会的支持,符合HIPAA法案。对34例颞叶癫日病人及116名对照者mR成像容积数据进行分析。结构容积计算采用美国食品药品管理局认证的自动定量mR成像分析软件(NeuroQuant)。

关键词：海马萎缩容积 TLE 磁共振

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一种新型美白牙膏的临床功效评价

牙膏工业 2004年第4期14卷 20-21页

作者： farid Ayad Amal khalaf Patricia Chaknis margaret E.Petrone Villiam De Vizio Anthony R.Volpe Haward m.Proskin 常规牙医诊所高露洁全球技术中心 Rochester H.M.Proskin&联合公司

该临床研究的目的是通过双盲试验方法来评价高露洁全效加美白牙膏对牙齿的美白效果。与高露洁全效牙膏相比 ,在高露洁全效加美白牙膏的配方中加入了高效清洁二氧化硅磨料 (highcleaningsilica ,HCS)。受试者来自于加拿大安大略的mis sis... 详细信息

该临床研究的目的是通过双盲试验方法来评价高露洁全效加美白牙膏对牙齿的美白效果。与高露洁全效牙膏相比 ,在高露洁全效加美白牙膏的配方中加入了高效清洁二氧化硅磨料 (highcleaningsilica ,HCS)。受试者来自于加拿大安大略的mis sissauga地区 ,入选时均接受牙齿外源性色斑的基线检查 ,符合临床试验方案要求的受试者按年龄、性别和牙齿颜色 (外源性 )随机分成两个治疗组。受试者用软毛牙刷每天早晚各一次 ,用指定的牙膏刷牙一分钟。 6周后每个受试者再接受一次牙龄外源性色斑检查。共有 93名受试者完成了整个研究。结果经统计学处理表明 :高露洁全效加美白牙膏与高露洁全效牙膏相比 ,在减少牙齿外源性色斑面积和降低牙齿外源性色斑深度上有显著的差异。

关键词：受试者外源性牙齿临床验方双盲试验经统计学处理牙膏美白新型

Elevated plasma interleukin-8 as a risk factor for mortality in children presenting with cerebral malaria

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Infectious Diseases of Poverty 2023年第1期12卷 47-61页

作者： Jade Royo Bertin Vianou manfred Accrombessi Elisée kinkpé Linda Ayédadjou Ida Dossou-Dagba YéléLadipo maroufou Jules Alao Gwladys I.Bertin michel Cot farid Boumédiène Sandrine Houzé Jean François Faucher Agnès Aubouy 无 UmR152 PHARmADEV IRDUPSToulouse University35 Chemin Des Maraichers31400 ToulouseFrance Clinical Research Institute of Benin(IRCB) Abomey CalaviBenin Faculty of Infectious and Tropical Diseases Disease Control DepartmentLondon School of Hygiene and Tropical MedicineLondonUK Paediatric Department Calavi HospitalCalaviBenin Paediatric Department Mother and Child University and Hospital Center(CHU-MEL)CotonouBenin UmR261 mERIT IRDParis UniversityParisFrance UmR 1094 EpimaCT InsermLimoges University HospitalLimoges UniversityLimogesFrance French malaria Reference Center APHPBichat HospitalParisFrance Parasitology Laboratory APHPBichat-Claude-Bernard HospitalParisFrance Infectious Diseases and Tropical medicine Department Limoges University HospitalLimogesFrance NeuroCm Group

Background Cerebral malaria(Cm)is a neuropathology which remains one of the deadliest forms of malaria among African *** kinetics of the pathophysiological mechanisms leading to neuroinflammation and the death or survival of patients during Cm are still poorly *** increasing production of cytokines,chemokines and other actors of the inflammatory and oxidative response by various local actors in response to neuroinflammation plays a major role during Cm,participating in both the amplification of the neuroinflammation phenomenon and its *** this study,we aimed to identify risk factors for Cm death among specific variables of inflammatory and oxidative responses to improve our understanding of Cm *** Children presenting with Cm(n=70)due to *** infection were included in southern Benin and divided according to the clinical outcome into 50 children who survived and 20 who *** examination was complemented by fundoscopic examination and extensive blood biochemical analysis associated with molecular diagnosis by multiplex PCR targeting 14 pathogens in the patients'cerebrospinal fluid to rule out *** technology and enzyme immunoassay kits were used to measure 17 plasma and 7 urinary biomarker levels,*** were analysed by univariate analysis using the nonparametric mann-Whitney U test and Pearson’s Chi2 *** and multivariate analyses were conducted separately for plasma and urinary biomarkers to identify Cm mortality risk *** Univariate analysis revealed higher plasma levels of tumour necrosis factor(TNF),interleukin-1beta(IL-1β),IL-10,IL-8,C-X-C motif chemokine ligand 9(CXCL9),granzyme B,and angiopoietin-2 and lower urinary levels of prostanglandine E2 metabolite(PGEm)in children who died compared to those who survived Cm(mann-Whitney U-test,P-values between 0.03 andmultivariate logistic analysis highlighted elevated plasma levels of IL-8 as the m

关键词： Cerebral malaria Children Benin Cytokine Plasma Urine Immunologic marker NeuroCm

Stable Weakly Shadowable Volume-preserving Systems Are Volume-hyperbolic

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Acta mathematica Sinica,English Series 2014年第6期30卷 1007-1020页

作者： mrio BESSA manseob LEE Sandra VAZ Universidade da Beira Interior Rua Marquês d’vila e Bolama 6201-001 Covilh Portugal Department of mathematics Mokwon University Daejeon 302-729 Republic of Korea

We prove that any C1-stable weakly shadowable volume-preserving diffeomorphism defined on a compact manifold displays a dominated splitting E ⊕ F. moreover, both E and F are volume-hyperbolic. Finally, we prove the version of this result for divergence-free vector fields. As a consequence, in low dimensions, we obtain global hyperbolicity.

关键词： Weak shadowing dominated splitting hyperbolicity

Degradation of duloxetine: Identification of transformation products by UHPLC-ESI(+)-HRmS/mS,in silico toxicity and wastewater analysis

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Journal of Environmental Sciences 2019年第8期31卷 113-123页

作者： Rodrigo A.Osawa Ana P.Carvalho Olinda C.monteiro m.Conceicao Oliveira m.Helena Florêncio Centro de Química e Bioquímica Faculdade de Ciências Universidade de Lisboa Laboratório de FTICR e Espectrometria de massa Estrutural Faculdade de Ciências Universidade de Lisboa Centro de Química Estrutural Instituto Superior Técnico Universidade de Lisboa

Duloxetine(DUL), an antidepressant drug, has been detected in surface water and wastewater effluents, however, there is little information on the formation of its transformation products(TPs). In this work, hydrolysis, photodegradation(UV irradiation) and chlorination experiments were performed on spiked distillated water, under controlled experimental conditions to simulate abiotic processes that can occur in the environment and wastewater treatment plants(WWTPs). Eleven TPs, nine from reaction with UV light and two from chlorine contact, were formed and detected by ultra-high performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry, and nine of them had their chemical structures elucidated upon analyses of their fragmentation patterns in mS/mS spectra. The formation and degradation of the TPs were observed. The parent compound was completely degraded after30 min in photodegradation and after 24 hr in chlorination. Almost all TPs were completely degraded in the experiments. The ecotoxicity and mutagenicity of the TPs were predicted based on several in silico models and it was found that a few of these products presented more ecotoxicity than DUL itself and six TPs showed positive mutagenicity. Finally, wastewater samples were analyzed and DUL and one TP, possibly formed by chlorination process, were detected in the effluent, which showed that WWTP not only did not remove DUL, but also formed a TP.

关键词： High resolution mass spectrometry Duloxetine Degradation processes Transformation products Wastewater analysis In silico toxicity