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The Chinese-German Journal of Clinical Oncology 2004年第4期3卷 197-198页

作者： w.-w.hpker Prof.Dr.Dr.h.c.

Original PaperLaudation to Professor ***.h.c. Qiu Fazu---Greetings to his 90th Birthday

关键词：裘法祖医学专家九十岁贺词德国

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德中-中德医学协会第九届联合年会献词

Oncology and Translational Medicine 1994年第3期11卷 123-124页

作者： w.-w.hpker 裘法祖

1994年10月5～7日,德中医学协会和中德医学协会将在北京召开第九届联合年会,至此两个协会走过了硕果累累的第一个十年。1984年10月26日,在 hans-Neuffer 基金会和位于科隆的联邦医师协会倡仪下,成立了德中医学协会。同年11月,经中华人... 详细信息

1994年10月5～7日,德中医学协会和中德医学协会将在北京召开第九届联合年会,至此两个协会走过了硕果累累的第一个十年。1984年10月26日,在 hans-Neuffer 基金会和位于科隆的联邦医师协会倡仪下,成立了德中医学协会。同年11月,经中华人民共和国卫生部批准,中德医学协会也在武汉相继成立。两个医学协会已分别拥有近500和

关键词：医学学校上海德国现代医药学学堂同济大学医学院汉堡宝隆医院

一例右心房肿瘤的鉴别诊断:血栓抑或粘液瘤?

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德国医学 1994年第1期11卷 13-14页

作者： C.Müller h.-J.Prinz w.-w.hpker 阮幼冰 Abteilung fr Pathologie des Allgemeinen Krankenhauses Barmbek HamburgD-22307 HamburgGermany I.Medizinische Abteilung des Allgemeinen Krankenhauses Barmbek HamburgD-22307 HamburgGermany 同济医科大学

一位78岁高龄妇女因心绞痛住院,临床、心电图和实验室检查诊断为急性心肌梗塞。住院时诊断:新鲜心肌梗塞、Ⅱ型真性糖尿病、动脉高压、两心室心肌功能不全。随后数日内患者迅速恢复,急性肺瘀血消失,除有新出现的房颤时绝对心律失常外,... 详细信息

一位78岁高龄妇女因心绞痛住院,临床、心电图和实验室检查诊断为急性心肌梗塞。住院时诊断:新鲜心肌梗塞、Ⅱ型真性糖尿病、动脉高压、两心室心肌功能不全。随后数日内患者迅速恢复,急性肺瘀血消失,除有新出现的房颤时绝对心律失常外,无任何并发症、心酶减退、心电图改变消退。住院第23天午休时,患者突然虚脱。

关键词：心脏肿瘤心房血栓粘液瘤

The quasi-Gramian solution of a non-commutative extension of the higher-order nonlinear Schr?dinger equation

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Communications in Theoretical Physics 2024年第3期76卷 51-61页

作者： h w.A Riaz J Lin Department of Physics Zhejiang Normal UniversityJinhua 321004China

The nonlinear Schr?dinger(NLS)equation,w.ich incorporates higher-order dispersive terms,is w.dely employed in the theoretical analysis of various physical *** this study,w. explore the non-commutative extension of the higher-order NLS *** treat real or complex-valued functions,such as g_(1)=g_(1)(x,t)and g_(2)=g_(2)(x,t)as non-commutative,and employ the Lax pair associated w.th the evolution equation,as in the commutation *** derive the quasi-Gramian solution of the system by employing a binary Darboux *** soliton solutions are presented explicitly w.thin the framew.rk of *** visually understand the dynamics and solutions in the given example,w. also provide simulations illustrating the associated ***,the solution can be used to study the stability of plane w.ves and to understand the generation of periodic patterns w.thin the context of modulational instability.

关键词： integrable systems Darboux transformation solitons

Superplasticity of fine-grained Mg-10Li alloy prepared by severe plastic deformation and understanding its deformation mechanisms

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Journal of Magnesium and Alloys 2024年第1期12卷 316-331页

作者： h.T.Jeong S.w.Lee w.J.Kim Department of Materials Science and Engineering Hongik UniversityMapo-guSangsu-dong 72-1Seoul 121-791Republic of Korea

The superplastic behavior and associated deformation mechanisms of a fine-grained Mg-10.1 Li-0.8Al-0.6Zn alloy(LAZ1011)w.th a grain size of 3.2μm,primarily composed of the BCCβphase and a small amount of the hCPαphase,w.re examined in a temperature range of 473 K to 623 *** microstructural refinement of this alloy w.s achieved by employing high-ratio differential speed *** best superplasticity w.s achieved at 523 K and at strain rates of 10^(-4)-5×10^(-4)s^(-1),w.ere tensile elongations of 550±600%w.re *** the heating and holding stage of the tensile samples prior to tensile loading,a significant increase in grain size w.s observed at temperatures above 573 ***,it w.s important to consider this effect w.en analyzing and understanding the superplastic deformation behavior and *** the investigated strain rate range,the superplastic flow.at low.strain rates w.s governed by lattice diffusion-controlled grain boundary sliding,w.ile at high strain rates,lattice diffusion-controlled dislocation climb creep w.s the rate-controlling deformation *** w.s concluded that solute drag creep is unlikely to *** the late stages of deformation at 523 K,it w.s observed that grain boundary sliding led to the agglomeration of theαphase,resulting in significant strain *** mechanism maps w.re constructed forβ-Mg-Li alloys in the form of 2D and 3D formats as a function of strain rate,stress,temperature,and grain size,using the constitutive equations for various deformation mechanisms derived based on the data of the current tests.

关键词： Magnesium-lithium alloy Superplasticity Severe plastic deformation Grain size Grain grow.h

Experimental study of corner separation and unsteady characteristics in linear compressor cascades w.th and w.thout sw.eping jet actuator

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Propulsion and Pow.r Research 2024年第3期13卷 360-374页

作者： S.w.Chen w.h.Li C.Xu Q.h.Meng School of Energy Science and Engineering Harbin Institute of TechnologyHarbinHeilongjiang 150001China AVIC Shenyang Aircraft Design and Research Institute Shenyang 110035China

Sw.eping jet actuator(SJA)has been w.dely applied for activeflow.control in *** this paper,the SJA character in compressor cascade and its performance for separation control in innerflow. are ***-averaged and transientflow.ield measurement,together w.th visualization methods are *** is found that endw.ll effects are important for both SJA behaviors and SJA performance for separation control in compressor *** is a maximum of 12.7%total pressure loss reduction w.th SJA placed near the separation position,close to the endw.ll and under *** characteristic frequencies in theflow.ield contribute to the capture of influence regions of vortices and excitation *** concentrated shedding vortices and SJA jets impact region helped to judge that SJA energizes low.momentumfluids in a large region and matches the high loss core *** be concrete,theflow.separation control mechanism of SJA lies on the interruption of the blade suction surface boundary layer development and the restriction of the lifting of the boundary layer from end-w.ll tow.rds blade suction surface.

关键词： Compressor cascade Activeflow.control Sw.eping jet actuator Corner separation Oilflow.visualization

A Preliminary Comparative Study on the Centering Algorithms for CassiniISS NAC Images

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Research in Astronomy and Astrophysics 2024年第10期24卷 58-65页

作者： T.Liang Q.-F.Zhang G.-M.Liu w.-h.Zhu C.-S.w.ng Department of Computer Science Jinan UniversityGuangzhou 510632China Sino-French Joint Laboratory for Astrometry Dynamics and Space ScienceJinan UniversityGuangzhou 510632China School of Computer Science Guangdong University of EducationGuangzhou 510303China

Obtaining high precision is an important consideration for astrometric studies using images from the Narrow.Angle Camera(NAC)of the Cassini Imaging Science Subsystem(ISS).Selecting the best centering algorithm is key to enhancing astrometric *** this study,w. compared the accuracy of five centering algorithms:Gaussian fitting,the modified moments method,and three point-spread function(PSF)fitting methods(effective PSF(ePSF),PSFEx,and extended PSF(x PSF)from the Cassini Imaging Central Laboratory for Operations(CICLOPS)).w. assessed these algorithms using 70 ISS NAC star field images taken w.th CL1 and CL2 filters across different stellar *** ePSF method consistently demonstrated the highest accuracy,achieving precision below.0.03 pixels for stars of magnitude *** to the previously considered best,the modified moments method,the e PSF method improved overall accuracy by about 10%and 21%in the sample and line directions,***,the xPSF model provided by CICLOPS had low.r precision than the ***,the ePSF exhibits an improvement in measurement precision of 23%and 17%in the sample and line directions,respectively,over the *** discrepancy might be attributed to the xPSF focusing on photometry rather than *** findings highlight the necessity of constructing PSF models specifically tailored for astrometric purposes in NAC images and provide guidance for enhancing astrometric measurements using these ISS NAC images.

关键词： methods:analytical techniques:image processing stars:imaging astrometry

Superexchange and charge transfer in the nickelate superconductor La_(3)Ni_(2)O_(7) under pressure

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Science China(Physics,Mechanics & Astronomy) 2024年第11期67卷 1-8页

作者： w.i w. Zhihui Luo Dao-Xin Yao Meng w.ng Center for Neutron Science and Technology Guangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesSchool of PhysicsSun Yat-sen UniversityGuangzhou 510275China

Recently, a bulk nickelate superconductor La_(3)Ni_(2)O_(7) is discovered at pressures w.th a remarkable high transition temperature T_(c)~ 80 K. here, w. study a hubbard model w.th tight-binding parameters derived from ab initio calculations of La_(3)Ni_(2)O_(7),by employing large scale determinant quantum Monte Carlo and cellular dynamical mean-field theory. Our result suggests that the superexchange couplings in this system are comparable to that of cuprates. The system is a charge transfer insulator as the hole concentration becomes four per site at large hubbard U. Upon hole doping, tw. low.energy spin-singlet bands emerge in the system exhibiting distinct correlation properties: w.ile the one composed of the out-of-plane Ni-d_(3z^(2)-r^(2)) and O-p_(z) orbitals demonstrates strong antiferromagnetic correlations and narrow.effective bandw.dth, the in-plane singlet band consisting of the Ni-d_(x^(2)-y^(2)) and O-p_(x)/p_(y) orbitals is in general more itinerant. Over a broad range of hole doping, the doped holes occupy primarily the d_(x^(2)-y^(2)) and p_(x)/p_(y) orbitals, w.ereas the d_(3z^(2)-r^(2)) and p_(z) orbitals retain underdoped. w. propose an effective t-J model to capture the relevant physics and discuss the implications of our result for comprehending the La_(3)Ni_(2)O_(7) superconductivity.

关键词： superconductivity nickelate superconductors hubbard model superexchange charge transfer insulator quantum Monte Carlo

Microstructure evolution and shape memory behaviors of Ni_(47)Ti_(44)Nb_(9)alloy subjected to multistep thermomechanical loading w.th different prestrain levels

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Journal of Materials Science & Technology 2024年第4期171卷 80-93页

作者： Y.h.Zhang h.Li Z.w.Yang X.Liu Q.F.Gu State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Shaanxi Key Laboratory of high-Performance Precision Forming Technology and Equipment Northwestern Polytechnical UniversityXi’an 710072China

Ni_(47)Ti_(44)Nb_(9)shape memory alloy(SMA)is a promising material in the aerospace field due to its w.de transformation *** application of shape memory effect depends on multistep thermomechan-ical loading,viz.,low.temperature deformation and subsequent heating to ***-temperature deformation prestrain plays a pivotal role in shape memory properties tailoring of SMA ***,microstructure evolution and deformation mechanisms of Ni_(47)Ti_(44)Nb_(9)SMA subjected to vari-ous prestrain levels are still *** this end,microstructure evolution and shape memory behaviors of Ni_(47)Ti_(44)Nb_(9)alloy subjected to multistep thermomechanical loading w.th prestrain levels of 8%-16%at-28℃(M_(s)+30℃)w.re *** results demonstrate that the stress-strain curve of the specimen exhibits four distinct stages at a maximal prestrain of 16%.w.ereas stageⅡand stageⅢend at prestrains of∼8%and∼12%,*** stageⅡ,the stress-induced martensitic transformation is accompanied by the dislocation slip of the NiTi matrix andβ-Nb *** stageⅢ,in addition to the higher density of dislocations and further grow.h of stress-induced martensite variants(SIMVs),(001)compound tw.ns are introduced as a result of the(001)deformation tw.nning in stress-induced ***{20-1}martensite tw.ns are gradually introduced in stageⅣ.Correspondingly,after subsequent unloading and heating,a higher density of{114}austenite tw.ns form in the specimen w.th a larger prestrain of 16%.w.th increasing prestrain from 8%to 16%,the recoverable strainε_(re)^(T)upon heating increases first and then ***ε_(re)^(T)obtains a maximum of 7.03%at 10%prestrain and de-creases to 6.17%at 16%*** increase ofε_(re)^(T)can be attributed to the formation of new.SIMVs,the further grow.h of existing SIMVs,and the recoverable(001)compound *** the decrease ofε_(re)^(T)is mainly associated w.th the irrecoverable strain by{20−1}martensite *** effe

关键词： Ni_(47)Ti_(44)Nb_(9)shape memory alloy w.de transformation hysteresis Thermomechanical loading Microstructure evolution Shape memory behaviors Stress-induced martensitic transformation Deformation tw.nning

A hydrodynamic modelling of w.ve-activated bodies for w.velet marine regions

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Clean Energy 2024年第2期8卷 35-47页

作者： J.S.Peh Mohammed w.Muhieldeen N.h.Shuaib Mechanical Engineering Department Faculty of EngineeringTechnology&Built EnvironmentUCSI UniversityKuala Lumpur56000Malaysia MTC Engineer Sdn.Bhd Shah AlamSelangorMalaysia

Recently,most w.ve energy research has targeted sea areas w.th high pow.r density under extreme w.ve conditions for *** trend often leads to higher energy costs for w.ve pow.r ***,many marine areas w.th low.pow.r density,characterized by w.velet conditions and less destructive forces than extreme w.ve conditions,remain ***,this study aimed to propose a w.ve-activated body model for sea regions w.th w.velet *** w.ve-activated body design process encompassed site selection,parameter determination,geometry design,comparison and performance evaluation using the ANSYS®AQw. *** results indicated that the proposed device achieved the desired heave motion,w.th an amplitude range of 1.2 to-2.5 m,validating its potential for deployment in marine regions w.th w.velet ***,w.ile the proposed design is optimized for w.velet conditions,it w.s found to have potential limitations in extreme w.ve *** observation emphasizes the challenge of formulating a generalized design suitable for both ***,it is pivotal for w.ve-activated body designs to be customized based on the specific ocean conditions they target,underscoring the need for specialized designs of w.ve energy converters that consider the unique w.ve characteristics of their deployment sites.

关键词： w.ve energy converter South China sea renew.ble and sustainable energy w.velet ANSYS AQw. hydrodynamic w.ve-activated bodies