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Singularities of noncompact charged objects

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Chinese Physics B 2013年第3期22卷 192-195页

作者： m.Sharif G.Abbas Department of mathematics University of the PunjabQuaid-e-Azam CampusLahore-54590Pakistan

We formulate a model for noncompact spherical charged objects in the framework of noncommutative field *** Einstein-maxwell field equations are solved with charged anisotropic *** choose matter and charge densities as functions of the two parameters,instead of defining these quantities in terms of the Gaussian distribution *** is found that the corresponding densities and the ricci scalar are singular in origin,whereas the metric is nonsingular,indicating a spacelike *** numerical solution of the horizon equation implies that there are two or one or no horizon（s）,depending on the *** also evaluate the Hawking temperature and find that a black hole with two horizons is evaporated to an extremal black hole with one horizon.

关键词： noncommutative geometry electromagnetic field spacetime singularity

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适用于高硫燃料电厂的SNOX工艺

硫酸工业 2002年第3期 34-37页

作者： P.SCHOUBYE S.ENEVOLDSEN R.ricci 纪罗军 Haldor Topsφe公司 Snamprogetti公司

SNOX是一项可脱除烟气中 98%SOx、95 %NOx和所有颗粒的专利新工艺。硫以商品级浓硫酸的形式回收 ,NOx被还原成氮气。除了催化还原NOx所用的氨外 ,该工艺不消耗水或其它物料 ,不产生任何二次污染物 ,如废水、废浆或废渣。SNOX工艺已在 2... 详细信息

SNOX是一项可脱除烟气中 98%SOx、95 %NOx和所有颗粒的专利新工艺。硫以商品级浓硫酸的形式回收 ,NOx被还原成氮气。除了催化还原NOx所用的氨外 ,该工艺不消耗水或其它物料 ,不产生任何二次污染物 ,如废水、废浆或废渣。SNOX工艺已在 2家电厂和 2家化工厂中得到工业应用。重点叙述了 1999年 9月在西西里杰拉炼油厂投入运行的 1× 10 6m3

关键词：发电厂高硫燃料 SNOX工艺烟气 SNOX装置脱硫脱氮

mannhei mia granulo matis PCR检测方法的建立

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动物医学进展 2007年第5期28卷 13-16页

作者：安烨龚玉梅 jeanette miflin Pat Blackall 孙惠玲张培君北京市农林科学院畜牧兽医研究所澳大利亚昆士兰州动物研究所

mannheimia granulomatis是导致牛、羊呼吸道传染病的一种病原菌。为快速、准确诊断由该菌导致的疫病,从基因库中获得***的基因序列,再从***的基因序列中获得与其他细菌包括溶血性曼氏杆菌和多杀性巴氏杆菌等不同的基因片段,设计引物,... 详细信息

mannheimia granulomatis是导致牛、羊呼吸道传染病的一种病原菌。为快速、准确诊断由该菌导致的疫病,从基因库中获得***的基因序列,再从***的基因序列中获得与其他细菌包括溶血性曼氏杆菌和多杀性巴氏杆菌等不同的基因片段,设计引物,建立了特异性好、敏感性较高的***的PCR诊断方法。结果表明,其特异性为100%,最小检出量为5×104cfu/mL^5×103cfu/***或1/10个单个菌落。

关键词： m.granulomatis 聚合酶链反应建立

ricci Collineations of Static Space Times with maximal Symmetric Transverse Spaces

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Communications in Theoretical Physics 2006年第1期45卷 95-104页

作者： m. Akbar CAI Rong-Gen Institute of Theoretical Physics the Chinese Academy of Sciences P.O. Box 2735 Beijing 100080 China

A complete classification of static space times with maximal symmetric transverse spaces is provided, according to their ricci collineations. The classification is made when one component of ricci collineation vector field V is non-zero （cases 1 - 4）, two components of V are non-zero （cases 5 - 10）, and three components of V are non-zero （cases 11 - 14）, respectlvily. Both non-degenerate （detRab ≠ 0） as well as the degenerate （det Rab = 0） cases are discussed and some new metrics are found.

关键词： ricci collineations exact solutions of Einstein field equations maximal symmetric spaces

Behavior of Anisotropic Compact Stars in f(R,∅) Gravity

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Communications in Theoretical Physics 2019年第5期71卷 599-609页

作者： m.Farasat Shamir Adnan malik Department of Sciences and Humanities National University of Computer and Emerging Sciences

The aim of this paper is to investigate modified f(R, ?) theory of gravity, where R and ? represent the ricci scalar and scalar potential respectively. Specifically, we take the spherically symmetric spacetime to discuss the possible emergence of compact stars. We study the physical behavior of compact stars by considering 4 U 1820-30, SAX J1808-3658 and Her X1, which are three popular models of compact stars. The graphical analysis of energy density, radial pressure, tangential pressure, energy conditions as well as stability of compact stars has been shown. It is concluded that behavior of these three stars is usual for f(R, ?) gravity models with some specific choices of model parameters.

关键词： f(R,∅) gravity spherically symmetric spacetime compact stars Klein-Gordon equation

Evaluation of Adverse Events Following Immunization against Rotavirus Regardless of Recommended Age Restriction

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Journal of Biosciences and medicines 2017年第8期5卷 78-82页

作者： Jesus Reyna-Figueroa Irina jeanette Bercholc-Urinowsky Gabriela Cardoso-Yah Ricardo Platón Vazquez-Alvarado Dalila Ramos-López Freya Helena Campos-Romero Cory Handelsman Ana Elena Limón-Rojas Central South Hospital Mexican Oil Company Petróleos Mexicanos México City Mexico Robert Wood Johnson University Hospital New Jersey USA

Introduction: mild and moderate Adverse Events Following Immunization (AEFI) against Rotavirus has not received much attention when the vaccine is administered regardless of recommended age restriction. Objectives: To describe the behavior of mild and moderate AEFI in immunized subjects against Rotavirus, in who age restriction period had not been considered. methods: A case-control study in which we included immunized patients with monovalent oral vaccine against rotavirus and divided them into two groups: 1) Infants who received RV1 vaccine without considering the recommended period, and 2) Infants who were vaccinated with the recommended schedule. Results: From the total doses, 143/1894 (7.5%) were administered outside the restriction period. The most frequent AEFIs with the first dose were purpura, polypnea, and rhinorrhea;For the second dose: purpura, bloody stools, irritability and rhinorrhea. Conclusions: This study shows the benefits from vaccination regardless of age restriction are more beneficial compared to the possible risks of AEFI.

关键词： Rotavirus Vaccination Age Restriction Adverse Reaction

Dust Static Cylindrically Symmetric Solutions in f(R) Gravity

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Communications in Theoretical Physics 2014年第9期61卷 348-352页

作者： m. Farasat Shamir Zahid Raza Department of Sciences and Humanities National University of Computer and Emerging SciencesLahore Campus Pakistan

This paper is devoted to investigate non-vacuum solutions of cylindrically symmetric spacetime in the context of metric f(R) gravity. We take dust matter to find energy density of the universe. In particular, we find two exact solutions, which correspond to two f(R) models in each case. The first solution provides constant curvature while the second solution corresponds to non-constant curvature. The functions of the ricci scalar and energy densities are evaluated in each case.

关键词： f(R) gravity cylindrically symmetric spacetime

采用间接复位、钢板固定、不植骨的方法治疗稳定的股骨干髓内假体周围骨折

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骨科动态 2006年第1期2卷 1-5页

作者： WILLIAm m. ricci BRETT R. BOLHOFNER TImOTHY LOFTUS CHRISTOPHER COX SCOTT mITCHELL JOSEPH BORRELLI JR 董强（译）马宝通（译） Investigation performed at the Department of Orthopaedic Surgery Washington University School of Medicine at Barnes-Jewish Hospital St. Louis Missouri and All Florida Orthopaedic Associates St. Petersburg Florida 天津医院创伤骨科 300211

背景：间接复位技术相对于较早期的开放复位技术具有能够提高骨愈合率及减少植骨的优势，我们对以间接复位治疗股骨干假体周围骨折的结果进行了研究。方法：连续对50例稳定的股骨干髓内假体周围骨折（Vancourvr B1型）进行治疗，根据病... 详细信息

背景：间接复位技术相对于较早期的开放复位技术具有能够提高骨愈合率及减少植骨的优势，我们对以间接复位治疗股骨干假体周围骨折的结果进行了研究。方法：连续对50例稳定的股骨干髓内假体周围骨折（Vancourvr B1型）进行治疗，根据病例记录包括切开复位、间接复位、外侧单钢板固定且不行同种异体或其他植骨。4例术后早期死亡，5例随访时间短，对其余41例（平均年龄72岁）进行了平均24个月的随访，并进行临床和影像学评估。结果：所有骨折平均12周（7～23周）愈合，对位满意。1例有1根钢丝断裂，2例有1枚螺钉断裂，骨折最终愈合且无明显的内置物松动和对位不良。1例发生围手术期深部感染。41例中30例行走功能恢复到骨折前的状态。结论：结果证实间接复位骨膜外侧单钢板固定且不进行植骨的方法对于稳定的股骨干髓内假体周围骨折的疗效是应该肯定的。可信水平：治疗性研究，Ⅳ级，进一步可信度参见作者介绍。

关键词：骨板骨移植骨折固定术/方法股骨骨折/外科学假体和植入物/副作用随访研究人类

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关于第一特征值的一个注记

上海交通大学学报 1991年第1期25卷 105-112页

作者：陆志勤上海交通大学应用数学系

本文运用文献[1]的方法,证明了下述结果,设m 是一个有凸边界的紧致Riemann 流形,其ricci 曲率非负,则m 上的Laplace 算子的关于Neumann 边值条件的第一特征值η_1满足η_1≥π~2/d^2,其中d 是m 的直径.并简要地讨论了这方面新近发展的情况.

关键词：第一特征值拉氏算子边界条件