检索结果-南通市图书馆

Chiral phase structure of the sixteen meson states in the SU(3) Polyakov linear-sigma model for finite temperature and chemical potential in a strong magnetic field

引用

Chinese Physics C 2019年第3期43卷 56-71页

作者： Abdel Nasser tawfik Abdel magied Diab m.t.hussein Nile University Juhayna sq.of 26th-July-Corridor16453 GizaEgypt Frankfurt Institute for Advanced Studies Ruth Moufang Str.160438 FrankfurtGermany and World Laboratory for Cosmology And Particle Physics(WLCAPP)11571 CairoEgypt Egyptian Center for theoretical Physics(ECtP) MTI University11571 CairoEgypt and World Laboratory for Cosmology And Particle Physics(WLCAPP)11571 CairoEgypt Physics Department Faculty of ScienceCairo University12613 GizaEgypt

In characterizing the chiral phase-structure of pseudoscalar(J^(pc) = 0^(-+)), scalar(J^(pc) = 0^(++)), vector(J^(pc) =1^(--)) and axial-vector(J^(pc) = 1^(++)t) meson states and their dependence on temperature, chemical potential, and magnetic field,we utilize the SU(3) Polyakov linear-sigma model(PLSm) in the mean-field approximation. We first determine the chiral(non)strange quark condensates,σ_l and σ_s, and the corresponding deconfinement order parameters, φ and φ~*, in thermal and dense(finite chemical potential) medium and finite magnetic field. the temperature and the chemical potential characteristics of nonet meson states normalized to the lowest bosonic matsubara frequency are analyzed. We note that all normalized meson masses become temperature independent at different critical temperatures. We observe that the chiral and deconfinement phase transitions are shifted to lower quasicritical temperatures with increasing chemical potential and magnetic field. thus, we conclude that the magnetic field seems to have almost the same effect as the chemical potential, especially on accelerating the phase transition, i.e. inverse magnetic catalysis. We also find that increasing the chemical potential enhances the mass degeneracy of the various meson masses, while increasing the magnetic field seems to reduce the critical chemical potential, at which the chiral phase transition takes place. Our mass spectrum calculations agree well with the recent PDG compilations and PNJL, lattice QCD calculations, and QmD/UrQmD simulations.

关键词： Chiral transition magnetic fields magnetic catalysis critical temperature viscous properties of QGP

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Search for dark matter production in association with the Z′ boson at the LHC in pp collisions at √s=8 teV using monte Carlo simulations

引用

Chinese Physics C 2021年第8期45卷 1-11页

作者： S.Elgammal m.A.Louka A.Y.Ellithi m.t.hussein Centre for theoretical physics The British University in EgyptCairoEgypt Physics Department Faculty of ScienceCairo UniversityEgypt

this analysis evaluates the possibility of the search for Dark matter(Dm)particles using events with a Zf heavy gauge boson and a large missing transverse momentum at the Large Hadron Collider(LHC).We consider the muonic decay of Z'.the analyzed monte Carlo samples were the Open simulated files produced by the Compact muon Solenoid(CmS)collaboration for proton-proton collisions,corresponding to an integrated luminosity of the LHC run-I with 19.7 fb^(-1) at √s=8 *** scenarios,namely a simplified benchmark scenario,called Dark Higgs,and the effective field theory(EFt)formalism,were used for *** were set on Z′,dark matter masses,and the cutoff scale of the EFt.

关键词： dark matter new heavy gauge boson Large Hadron Collider Compact muon Solenoid

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Search for production of dark fermion candidates in association with heavy neutral gauge boson decaying to dimuon in proton-proton collisions at√s=8 teV using CmS open data

引用

Chinese Physics C 2024年第4期48卷 6-13页

作者： Y.mahmoud H.Abdallah m.t.hussein S.Elgammal Centre for theoretical physics The British University in EgyptEgypt Physics Department Faculty of ScienceCairo UniversityEgypt

In this study,we conducted a search for dark matter using a part of the data recorded by the CmS experiment during run-I of the LHC in 2012 with a center of mass energy of 8 teV and an integrated luminosity of 11.6 fb−*** data were gathered from the CmS open *** matter,in the framework of the simplified model(mono-Z′),can be produced from proton-proton collisions in association with a new hypothetical gauge boson,Z′.thus,the search was conducted in the dimuon plus large missing transverse momentum *** benchmark scenario of mono-Z′,which is known as light vector,was used for interpreting the CmS open *** evidence of dark matter was observed,and exclusion limits were set on the masses of dark matter and Z′at 95%confidence level.

关键词： dark matter large hadron collider CmS open data search for new physics dark fermion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

transport mechanism in chemically reactive hybrid nanofluid flow containing gyrotactic micro-organisms over a curved oscillatory surface

引用

Applied mathematics and mechanics(English Edition) 2025年第1期46卷 177-192页

作者： m.NAVEED m.ImRAN t.ASGHAR Z.ABBAS Department of mathematics Division of Science and TechnologyUniversity of Education Department of mathematics The Islamia University of Bahawalpur

this paper examines the transport analysis, including both heat transfer and mass transfer, in hybrid nanofluid flow containing gyrotactic microorganisms towards a curved oscillatory surface. the influence of magnetic fields is also inspected in terms of their physical characteristics. to depict the phenomena of transport, modified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and homogeneous chemical reactions are also incorporated. Utilizing a curvilinear coordinate system, the flow problem is formulated as partial differential equations(PDEs)for momentum, concentration, microorganism field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the homotopy analysis method(HAm).the effects of significant flow parameters on the pressure and microorganism fields, velocity, oscillation velocity, concentration, and temperature distributions are shown via graphs. Furthermore, the variations in skin friction, mass transfer rate, heat transfer rate, and local motile number due to different involved parameters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and temperature fields are enhanced as the values of the solid volume fraction variables *** is also verified that the concentration rate field decreases as the values of the homogeneous reaction strength parameter and the radius of curvature parameter increase, and it increases with the Schmidt number and the heterogeneous reaction strength *** outcomes show a favorable response of the motile number to advanced values of the Peclet number, the Schmidt number, the microorganism difference parameter, and the bio-convective Lewis number.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Gene therapy for liver regeneration:Experimental studies and prospects for clinical trials

引用

World Journal of Gastroenterology 2010年第32期16卷 4019-4030页

作者： hussein m Atta Department of Surgery Faculty of MedicineMinia UniversityMisr-Aswan RoadEl-Minia 61519Egypt

the liver is an exceptional organ,not only because of its unique anatomical and physiological characteristics,but also because of its unlimited regenerative *** of the molecular mechanisms that govern liver regeneration has allowed researchers to exploit them to augment liver *** progress in the field,however,was made by the introduction of the powerful tool of gene *** of genetic materials,such as hepatocyte growth factor,using both viral and non-viral vectors has proved to be successful in augmenting liver regeneration in various animal *** future clinical studies,ongoing research aims at eliminating toxicity of viral vectors and increasing transduction efficiency of non-viral vectors,which are the main drawbacks of these *** goal of current research is to develop gene therapy that targets specific liver cells using receptors that are unique to and highly expressed by different liver cell *** outcome of such investigations will,undoubtedly,pave the way for future successful clinical trials.

关键词： Liver regeneration Gene therapy Genetic vectors Growth factors

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Prevention of peritoneal adhesions:A promising role for gene therapy

引用

World Journal of Gastroenterology 2011年第46期17卷 5049-5058页

作者： hussein m Atta Department of Surgery Faculty of MedicineMinia University

Adhesions are the most frequent complication of abdominopelvic surgery,yet the extent of the problem,and its serious consequences,has not been adequately *** evolved as a life-saving mecha-nism to limit the spread of intraperitoneal inflammatory *** different pathophysiological mechanisms can independently trigger adhesion *** cell injury and loss during operations,tissue hypoxia and inflammation each promotes adhesion formation separately,and potentiate the effect of each *** have repeatedly demonstrated that interruption of a single pathway does not completely prevent adhesion *** review summarizes the pathogenesis of adhesion formation and the results of single gene therapy *** explores the prom-ising role of combinatorial gene therapy and vector modif ications for the prevention of adhesion formation in order to stimulate new ideas and encourage rapid advancements in this field.

关键词： Peritoneal adhesions tissue plasminogen activator Gene therapy Plasminogen activator inhibi-tor tissue inhibitor of metalloproteinase transforminggrowth factor β

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Reversibility and heritability of liver fibrosis:Implications for research and therapy

引用

World Journal of Gastroenterology 2015年第17期21卷 5138-5148页

作者： hussein m Atta Department of Surgery Faculty of MedicineMinia UniversityEl-Minia 61519Egypt

Liver fibrosis continues to be a major health problem worldwide due to lack of effective *** the etiology cannot be eliminated,liver fibrosis progresses to cirrhosis and eventually to liver failure or malignancy;both are associated with a fatal *** transplantation,the only curative therapy,is still mostly *** fibrosis was shown to be a reversible process;however,complete reversibility remains ***,the molecular markers of liver fibrosis were shown to be transmitted across *** mechanisms including DNA methylation,histone posttranslational modifications and noncoding RNA have emerged as major determinants of gene expression during liver fibrogenesis and ***,epigenetic mechanisms have been shown to be transmitted through mitosis and meiosis to daughter cells and subsequent ***,the exact epigenetic regulation of complete liver fibrosis resolution and inheritance has not been fully *** communication will highlight the recent advances in the search for delineating the mechanisms governing resolution of liver fibrosis and the potential for multigenerational and transgenerational transmission of fibrosis *** fact that epigenetic changes,unlike genetic mutations,are reversible and can be modulated pharmacologically underscores the unique opportunity to develop effective therapy to completely reverse liver fibrosis,to prevent the development of malignancy and to regulate heritability of fibrosis phenotype.

关键词： Epigenetics Epimutations Inheritance Livercirrhosis Hepatic stellate cells Histone modification DNA methylation microRNA Long noncoding RNA transcription regulation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synthesis, Characterization and Corrosion Inhibitive Properties of New thiazole Based Polyamides Containing Diarylidenecyclohexanone moiety

引用

Chinese Journal of Polymer Science 2015年第1期33卷 1-13页

作者： K.I.Aly m.A.hussein Polymer Chemistry Lab. 122 Chemistry Department Faculty of Science Assiut University Assiut 71516 Egypt Chemistry Department Faculty of Science King Abdulaziz UniversityJeddah 21589 Kingdom of Saudi Arabia

the present work aimed to synthesize a new interesting series of thiazole based polyamides containing diarylidenecyclohexanone moiety 5a-5f using low temperature solution polycondensation technique. the new polymers were synthesized by the reaction of thiazole based monomer namely, bis（2-aminothiazol-4-ylbenzylidene）cyclohexanone 3 with different aliphatic and aromatic diacid chlorides using NmP, and in the presence of anhydrous Li Cl as catalyst. Adipoyl, sebacoyl, oxaloyl, terephthaloyl, isophthaloyl dichlorides and biphenyl dicarbonyl dichloride were used as diacid chlorides. the structure of the model compound 4 as well as the new polymers was confirmed by correct elemental and spectral analyses. the thermal properties of those polymers were evaluated by tGA and DtG measurements and correlated to their structural units, beside X-ray diffraction analysis, solubility and viscometry measurements. the inherent viscosities for the synthesized polymers were in the range 0.6–1.03 d L/g. On the other hand the corrosion inhibitive properties of monomer 3 as well as polyamides 5d and 5f as selected examples were carried out on carbon-steel in 0.5 mol/L H2SO4 at 40 °C. the calculated inhibition efficiency（IE%） for polymer 5d was in the range（82 ± 6）% in all selected concentrations. the best value of IE% was obtained at 1 mg/L to reach 98.24% for polymer 5d and at 0.5 mg/L to reach 87.75% for polymer 5f.

关键词： Diarylidenecyclohexanone Polyamides Synthesis Characterization thiazole Corrosion inhibitive properties.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Environmental Isotopic Characterization of Groundwater and Surface Water in Northeast missan Province,South Iraq

引用

Acta Geologica Sinica(English Edition) 2014年第4期88卷 1227-1238页

作者： hussein Badr GHALIB Ali Riza SGüt Selcuk University college of EngineeringGeology DepartmentSelcukTurkey Basrah University Geology DepartmentBasrahIraq

the present work studies the environmental isotopes assess groundwater characteristics of the different parts of the main aquifer in the northeast missan Province in south of Iraq. Water samples of groundwater and surface water were collected for two dry and wet seasons during the water year of 2011-2012. the study shows that most of the groundwater in the aquifer falls above the global meteoric water line, and all the samples fall below the mediterranean meteoric water line, indicating that these samples are a mixture of two water types. the tritium content of these samples supports this conclusion. the overall conclusion of this study indicates that there are two sources of groundwater recharge in the studied area： the ephemeral streams （teeb and Dewerge） and major precipitation sources. According to the tritium levels at or below one tritium unit （tU） obtained from the water, supply wells are highly confined or ＂not vulnerable＂. Overall, the 3^H results imply that recent recharge has taken place during the last four to five decades. In the recharge area, the high tritium content in the southern part of the teeb area suggests that the recharge originates from rapid infiltration of surface runoff. therefore, the groundwater resources in the study area should be protected from contamination, because it will influence the aquifer in a relatively short period of time if any contamination enters the recharge areas of the aquifer.

关键词： Groundwater recharge tritium environmental isotope meteoric water line Iraq

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

thermodynamics of the Bardeen Regular Black Hole

引用

Chinese Physics Letters 2012年第7期29卷 25-28页

作者： m.Akbar Nema Salem S.A.hussein Effat University Jeddah 21478Kingdom of Saudi Arabia

We deal with the thermodynamic properties of the Bardeen regular black hole with reference to their respective *** is argued here that the expression of the heat capacity at horizons is positive in one parameter region and negative in the other,and between them the heat capacity diverges where the black hole undergoes the second-order phase transition.

关键词： transition Regular thermodynamics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：