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z-bpy,a New C2-Symmetric Bipyridine Ligand and Its Application in Enantioselective Copper(Ⅰ)-Catalyzed Cyclopropanation of Olefins

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Chinese Journal of Chemistry 2019年第8期37卷 807-810页

作者： yizhao Ouyang miao zhan Jing zhou Jiao Jiao Hao HU yoichi m.A.yamada Pengfei Li Frontier Institute of Science and Technology Xi'an Jiaotong UniversityXi'anShaanxi 710054China Department of Applied Chemistry School of ScienceXi'an Jiaotong UniversityXi'anShaanxi 710049China Xi'an Key Laboratory of Sustainable Energy materials Chemistry Xi'an Jiaotong UniversityXi'anShaanxi 710049China RIKEN Center for Sustainable Resource Science WakoSaitama 3510198Japan

Summary of main observation and conclusion A rigid C2-symmetric chiral bipyridine ligand z-bpy with a triptycene-like backbone was designed and synthesized from simple chemicals in a scalable *** this new ligand,copper(Ⅰ) catalyzed cyclopropanation of styrenes with commercial ethyl diazoacetate produced various corresponding cyclopropanes in high yields,diastereoselectivity and enantioselectivity up to 97% ee.

关键词： Its was

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16例脑结核瘤抗结核治疗系列观察

国际结核病与肺部疾病杂志 2007年第1期2卷 12-16页

作者： m. N. A. Idris T-E. O. Sokrab m. A. R. Arbab A. E. m. ahmed H. El Rasoul S. Ali m. A. Elzubair S. m. mirgani 马玙（译）杨振旦（校）张立兴（审） Faculty of medicine University of Khartoum Khartoum Sudan Hamad General Hospital Doha Qatar 不详

目的:报告16例颅内结核瘤患者的临床、影像学表现及抗结核治疗的结果。设计:本文共纳入苏丹Khartoun市全国神经系统疾病中心连续观察的16例脑结核瘤患者。诊断则依据其临床、头颅影像学特征及对抗结核治疗有效等方面。本组中共有7例具... 详细信息

目的:报告16例颅内结核瘤患者的临床、影像学表现及抗结核治疗的结果。设计:本文共纳入苏丹Khartoun市全国神经系统疾病中心连续观察的16例脑结核瘤患者。诊断则依据其临床、头颅影像学特征及对抗结核治疗有效等方面。本组中共有7例具有脑组织或脑外组织的病理组织学资料。结果与结论:本组病例最常见的临床表现是头痛(100%)、全身性抽搐(68.7%)及偏瘫(56.2%)。头颅横断面电子计算机体层摄影(CT)/核磁共振成像(mRI)显示单个或多个明显增强的病变及病灶周围水肿。经抗结核治疗后,多数存活患者(13/15)病变完全吸收。病变部分吸收与就诊延迟、颅内多个大病灶及晚期粟粒性结核病有关。我们主张对颅内结核瘤,即使是拟诊病例,应早期经验性试用抗结核治疗,尤其在结核病高发地区。

关键词：颅内结核瘤抗结核药物苏丹

Low-temperature alteration of uranium–thorium bearing minerals and its significance in neoformation of radioactive minerals in stream sediments of Wadi El-Reddah, North Eastern Desert, Egypt

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Acta Geochimica 2020年第1期39卷 96-115页

作者： O.A.Ebyan H.A.Khamis A.R.Baghdady m.G.El-Feky N.S.Abed Geology Department Faculty of ScienceAin Shams UniversityCairo 11566Egypt Nuclear materials Authority(NmA) P.O.Box 530El-MaadiCairoEgypt

The stream sediments of Wadi El Reddah(North Eastern Desert,Egypt)are geochemically and mineralogically *** content of radioactive and other heavy minerals is mainly represented by thorite,uranothorite,zircon,monazite,xenotime,columbite,fergusonite,and unknown rare earth elements(REEs)bearing minerals as well as *** emphasis on REE content of thorite,uranothorite,zircon and xenotime has been done to correlate them with the increase of uranium contents in these *** key evidence for the presence lowtemperature alteration processes includes the presence of some zircon crystals as remnants after complete dissolution of the overgrowth zircon in severe acidic environment,the sulphur content,biogenic minerals,occurrence of unusual minerals as cassiterite pore filling in zircon,variation in the REEs content from the surrounding granites to the stream sediments and the abundance of monazite in the surrounding *** minerals are partially and/or completely altered,which indicated by the pseudomorphism of zircon by xenotime,thorite,and uranothorite.

关键词： zircon Thorite Xenotime Radioactive minerals Low-temperature alteration Wadi El-Reddah

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西藏黑颈鹤越冬期昼间行为的时间分配

野生动物 2008年第1期29卷 15-20页

作者：仓决卓玛杨乐李建川西藏自治区高原生物研究所拉萨850001

采用瞬时扫描取样法研究了西藏南部黑颈鹤越冬行为的时间分配和活动节律。结果表明,取食是黑颈鹤冬季的最主要行为,占其日活动时间的73.0%,其次,警戒行为占14.0%,行走行为占5.6%,保养行为占4.5%,静息行为占1.7%,社群行为仅为0.4%。黑颈... 详细信息

采用瞬时扫描取样法研究了西藏南部黑颈鹤越冬行为的时间分配和活动节律。结果表明,取食是黑颈鹤冬季的最主要行为,占其日活动时间的73.0%,其次,警戒行为占14.0%,行走行为占5.6%,保养行为占4.5%,静息行为占1.7%,社群行为仅为0.4%。黑颈鹤的全天活动表现出明显的节律性变化,在9:00～11:00和17:00～18:00分别出现一个取食高峰,而在13:00～16:00则出现一个休息高峰和取食低谷。不同群体结构黑颈鹤在不同越冬时期,全天活动中各种行为的时间分配存在一定的差异,这样的差异也存在于家庭鹤的成鹤与幼鹤之间。

关键词：黑颈鹤越冬期时间分配西藏南部

具有腺性分化的膀胱尿路上皮原位癌92例报道

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临床与实验病理学杂志 2019年第3期35卷 359-359页

作者： yang z m Epstein J I 白明鹤(摘译) 张志勇(审校) 唐山工人医院病理科唐山063000 不详

具有腺性分化(CIS-GL)的膀胱尿路上皮原位癌(CIS)罕见,部分研究显示与小细胞癌相关。目前尚缺少证据表明在无浸润性癌时诊断的CIS-GL是否存在进展为小细胞的高风险。该文收集2008~2015年间会诊的27例CIS-GL,所有病例在诊断时均无先前或... 详细信息

具有腺性分化(CIS-GL)的膀胱尿路上皮原位癌(CIS)罕见,部分研究显示与小细胞癌相关。目前尚缺少证据表明在无浸润性癌时诊断的CIS-GL是否存在进展为小细胞的高风险。该文收集2008~2015年间会诊的27例CIS-GL,所有病例在诊断时均无先前或共存的浸润性癌。另收集65例既有CIS-GL又有浸润性癌的病例评估两者之间的关系。

关键词：膀胱原位癌细胞尿路病例腺性浸润性

Semi-exact Solutions of Konwent Potential

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Communications in Theoretical Physics 2019年第2期71卷 231-236页

作者： Qian Dong Shi-Shan Dong Eduardo Hernández-márquez Ramón Silva-Ortigoza Guo-Hua Sun Shi-Hai Dong Laboratorio de Informaci′on Cu′antica CIDETECInstituto Polit′ecnico NacionalUPALMCDMX 07700Mexico Information and Engineering College Dalian UniversityDalian 116622China ′Area de mecatr′onica CIDETECInstituto Polit′ecnico NacionalUPALMCDMX 07700Mexico Catedr′atica CONACyT CICInstituto Polit′ecnico NacionalCDMX 07738Mexico

In this work we study the quantum system with the symmetric Konwent potential and show how to find its exact solutions. We find that the solutions are given by the confluent Heun function. The eigenvalues have to be calculated numerically because series expansion method does not work due to the variable z ≥ 1. The properties of the wave functions depending on the potential parameter A are illustrated for given potential parameters V_0 and a. The wave functions are shrunk towards the origin with the increasing |A|. In particular, the amplitude of wave function of the second excited state moves towards the origin when the positive parameter A decreases. We notice that the energy levels ε_i increase with the increasing potential parameter |A| ≥ 1, but the variation of the energy levels becomes complicated for |A| ∈(0, 1), which possesses a double well. It is seen that the energy levels ε_i increase with |A| for the parameter interval A ∈(-1, 0), while they decrease with |A| for the parameter interval A ∈(0, 1).

关键词： exact solution Konwent potential confluent Heun function double well potential

magma-driven subcritical crack growth and implications for dike initiation from a magma chamber

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Magma-driven subcritical crack growth and implications for d...

Flow and Stopping in Ni+Ni and Pb+Pb at 0.4, 0.8 and 1.16 AGeV

中国科学院地质与地球物理研究所2006学术年会

作者： zuan Chen and z-H Jin Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China.E-mail:

The purpose of this paper is to explore a viscoelastic energy dissipation theory for subcritical dike growth from a magma *** theoretical relationship between the dike growth velocity and dike length is established using the viscoelastic subcritical crack growth theory proposed by the first author and the solutions of stress intensity factor at the crack tip derived by a perturbation *** of magma chamber over-pressure,buoyancy and viscoelastic properties of the host rock on the subcritical growth rate are included in the model. The numerical results indicate that the viscous energy dissipation of the host rock could allow a short dike to slowly grow on the order of 10-10 m/s under modest over-pressure and to accelerate when the stress intensity factor increases close to the fracture toughness,followed by the unstable dike *** proposed theory provides a reasonable understanding of dike initiation process from a magma chamber.

关键词： dike subcritical growth perturbation method magma crack

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ImP & HIRFL Annual Report 2004年 57-57页

作者： A. Andronic,O. N. Hartmann,N. Herrmann,K. D. Hildenbrand,y. J. Kim,m. Kirejczyk,P. Koczo,y. Leifels,W. Reisdorf,A. Schttauf,z. Tymiski GSI Darmstadt GSI Darmstadt Universitt Heidelberg (FOPI Collaboration) GSI Darmstadt Korea University Universitt Heidelberg (FOPI Collaboration) GSI Darmstadt GSI Darmstadt GSI Darmstadt GSI Darmstadt GSI Darmstadt

This report presents a systematic study on transverse flow and nuclear stopping in the central symmetric collisions of Ni+Ni and Pb+Pb at 0.4, 0.8 and 1.16 A GeV. The transverse flow is extracted from the dependence of the mean kinetic energy on the mass of light charged particles (LCP) at mid-rapidity. The degree of stopping

关键词：

Effective charge from lattice QCD

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Chinese Physics C 2020年第8期44卷 23-32页

作者： z.-F.Cui J.-L.zhang D.Binosi F.De Soto C.mezrag J.Papavassiliou C.D.Roberts J.Rodríguez-Quintero J.Segovia S.zafeiropoulos School of Physics Nanjing UniversityNanjing 210093China Institute for Nonperturbative Physics Nanjing UniversityNanjing 210093China Department of Physics Nanjing Normal UniversityNanjing 210023China European Centre for Theoretical Studies in Nuclear Physics and Related Areas Villa TambosiStrada delle Tabarelle 286I-38123 Villazzano(TN)Italy Dpto.Sistemas Físicos Químicos y NaturalesUniv.Pablo de OlavideE-41013 SevillaSpain 6.IRFUCEAUniversitéParis-SaclayF-91191 Gif-sur-YvetteFrance Department of Theoretical Physics and IFIC University of Valencia and CSICE-46100ValenciaSpain Department of Integrated Sciences and Center for Advanced Studies in Physics Mathematics and Computation University of Huelva E-21071 HuelvaSpain Aix marseille Univ Universitéde ToulonCNRSCPTMarseilleFrance

Using lattice configurations for quantum chromodynamics(QCD)generated with three domain-wall fermions at a physical pion mass,we obtain a parameter-free prediction of QCD’s renormalisation-group-invariant process-independent effective charge,α^(k2).Owing to the dynamical breaking of scale invariance,evident in the emergence of a gluon mass-scale,m0=0.43(1)GeV,this coupling saturates at infrared momenta:α^(0)/π=0.97(4).Amongst other things:α^(k2)is almost identical to the process-dependent(PD)effective charge defined via the Bjorken sum rule;and also that PD charge which,employed in the one-loop evolution equations,delivers agreement between pion parton distribution functions computed at the hadronic scale and *** diversity of unifying roles played byα^(k^2)suggests that it is a strong candidate for that object which represents the interaction strength in QCD at any given momentum scale;and its properties support a conclusion that QCD is a mathematically well-defined quantum field theory in four dimensions.

关键词： running coupling quantum chromodynamics Dyson-Schwinger equations lattice field theory emer-gence of mass confinement