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StUDY ON tHE PROBLEMS OF CONtACt IN tHE NUMERICAL SIMULAtION OF SHEEt FORMING

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Acta Metallurgica Sinica(English Letters) 2000年第2期13卷 459-464页

作者： K.F. Zhang, F.X. Diao, Q.F. Song, W. Wu, K.B. Chen and t.xie Harbin Institute of technology, Harbin 150001, China

this study is concerned with the problems of contact in the process of numerical simulation of sheet metal forming in rigid visco-plastic shell FEM. In respect of analysis of sheet deep drawing process,for the tool model described by triangular elements, a kind of contact judging algorithm about the correlation between the node of deformed mesh and the triangular element of a tool is presented. In SPF/DB Lagrangian multiplier method is adopted to solve the contact problem between deformed meshes, and a new reliable practical dynamic contact checking algorithm is presented. As computation examples, the simulation results of metal sheet deep drawing and SPF/DB are introduced in this paper.

关键词： kcontact search algorithm rigid visco-plastic shell FEM Lagrangian multiplier method sheet metal forming

time-Resolved Study of Pseudogap and Superconducting Quasiparticle Dynamics in Ca0.82La0.18Fe1-xNixAs2

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Chinese Physics Letters 2020年第6期37卷 86-89页

作者： Cong-Ying Jiang Hai-Ying Song t.xie C.Liu H.Q.Luo S.Z.Zhao Xiu Zhang X.C.Nie Jian-Qiao Meng Yu-Xia Duan H.Y.Liu Shi-Bing Liu Strong-Field and Ultrafast Photonics Lab Beijing Engineering Research Center of Laser TechnologyInstitute of Laser EngineeringBeijing University of TechnologyBeijing 100124China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China School of Physics and Electronics Central South UniversityChangsha 410083China Beijing Academy of Quantum Information Sciences Beijing 100193China

We use femtosecond time-resolved optical reflectivity to study the photoexcited quasiparticle(QP)dynamics in the iron-based 112 type superconducting(SC)samples Ca0.82La0.18Fe1-xNixAs2,with x=0 and *** the parent sample,a fast and a slow relaxation emerge at temperatures below the magnetic-structure(MS)transition tms≈50 K and the SC transition tc≈33 K,*** latter obviously corresponds to an SC QP dynamics,which is further confirmed in the x=0.024 sample with tc≈25 *** former suggests that a partial of photoexcited QP relaxation through a pesudogap(PG)channel,which is absent in the doped x=0.024 sample without the MS transition.

关键词： transition. relaxation excited

Genetic analyses of Chinese isolates of toxoplasma gondii reveal a new genotype with high virulence to murine hosts

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Genetic analyses of Chinese isolates of Toxoplasma gondii re...

2013年4月20日芦山(中国)M_S7.0地震可能的热红外亮温异常分析

第十一届全国寄生虫学青年工作者学术研讨会

作者： J.-M.GAO Y.-t.xie D.-H.LAI Z.-R.LUN Center for Parasitic Organisms School of Life Sciencesand Key Laboratory of Tropical Disease Control of the Ministry of EducationZhongshan School of MedicineSun Yat-Sen University

toxoplasma gondii is an obligate but opportunistic intracellular pathogen which infects almost all warm-blooded vertebrates including *** was estimated that up to one-third of the human population around the world are chronically infected with this parasite.A great deal of evidence demonstrates that a strongly clonal population structure of *** strains exists in humans and animals in North America and Europe,while the strains from South America are genetically separate and more *** differences in virulence between different strains mean that an understanding of strain diversity is important to human and animal ***,to date,only one predominant genotype,toxo DB#9(Chinese I),and a few other genotypes,including toxo DB#205,have been identified in *** using DNA sequence-based phylogenetic analyses,we have re-evaluated the population structure of *** strains collected from China and compared them with other global *** on phylogenetic analysis of restriction fragment length polymorphisms,multilocus sequence typing and intron sequences from ***,we propose that the Chinese isolates described as Chinese I are divided into two groups called Chinese I and Chinese *** addition,genetic differentiation among the genotypes was assessed using population genetic FSt pairwise comparisons,and there is statistical significance between Chinese strains and other reference *** results demonstrate that significant differences were found in mouse mortality caused by some Chinese strains,and also the archetypal I,II,III strains in ***,a comparison of cyst loading in the brains of infected rats showed some Chinese strains to be capable of a high degree of cyst *** we show that genotyping using neutral genetic markers may not be a useful predictor of pathogenic phenotypes.

关键词： Chinese toxoplasma gondii Genotype MLSt RFLP Virulence

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世界地震译丛 2019年第4期50卷 303-315页

作者： t.xie W.Y.Ma 张志宏(译) 李梦莹(校) 许忠淮(复校) 不详辽宁省地震局地震预报研究中心辽宁省地震局中国地震局地球物理研究所

2013年4月20日在中国四川省雅安市芦山县发生了M_S7.0地震,造成196人死亡,23人失踪,12 000多人受伤。为了分析芦山地震前可能与地震有关的热红外亮温异常,搜集了区域(25°N～35°N,98°E～108°E)范围内,2011年6月1日至2013年5月31日时... 详细信息

2013年4月20日在中国四川省雅安市芦山县发生了M_S7.0地震,造成196人死亡,23人失踪,12 000多人受伤。为了分析芦山地震前可能与地震有关的热红外亮温异常,搜集了区域(25°N～35°N,98°E～108°E)范围内,2011年6月1日至2013年5月31日时间段内,中国静止气象卫星FY-2E观测的地表亮温资料。使用在时域和频域分辨率都很好的连续小波变换方法分析相对功率谱亮温数据,得到了分析区域内亮温相对功率谱的时空演化过程。结果显示,相对小波功率谱异常出现在2013年1月24日到4月19日。异常首次出现在龙门山断裂带中段区域,然后逐渐朝着龙门山断裂带西南方向扩展;从3月1日开始沿鲜水河断裂带也开始出现异常;最终,异常聚集在龙门山断裂和鲜水河断裂的交会区域。随着异常的出现,异常区域和相对小波功率谱振幅逐渐增大,在3月下旬异常区域和异常振幅达到最大。随着地震的临近,异常振幅和空间区域逐渐减小,最终地震发生在异常区域的东南边缘。芦山地震是在此期间异常区域仅有的显著地质事件,因此认为,热红外相对小波功率谱的异常变化可能与芦山地震是有关联的。

关键词：芦山地震亮温热异常小波变换四川省

2010年4月14日中国玉树M S7.1地震前热红外亮温异常

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世界地震译丛 2020年第5期51卷 484-493页

作者： t.xie C.L.Kang W.Y.Ma 贾丽华(译) 郭晓燕(译) 曹凤娟(译) 陈学忠(校) 不详辽宁省地震局中国地震局地球物理研究所

本文采用连续小波变换方法分析可能与2010年4月14日中国青海省发生的玉树地震(M S=7.1)有关的地震亮温异常。分析数据为2010年1月1日至2011年12月31日期间,空间区域范围28.1°~38.1°N,91.7°~101.7°E内的中国地球同步气象卫星FY 2E每... 详细信息

本文采用连续小波变换方法分析可能与2010年4月14日中国青海省发生的玉树地震(M S=7.1)有关的地震亮温异常。分析数据为2010年1月1日至2011年12月31日期间,空间区域范围28.1°~38.1°N,91.7°~101.7°E内的中国地球同步气象卫星FY 2E每日观测的亮温数据。小波变换是一种分析非稳态功率的时间序列的有效方法,能在时间域和频率域中识别异常功率。结果表明,在两年中相对小波功率谱(RWPS)出现了9次异常变化,其中2次异常对应了地震,其余7次异常则没有对应地震。对应了地震的2次RWPS异常之一位于玉树地震震中的南部地区,异常在2010年3月29日左右开始出现,在地震发生之前有所减弱,直到2010年4月14日已完全消失。玉树地震是研究时段内该区域发生的唯一一次强震,因而认为此次RWPS的异常变化可能与玉树地震有关。

关键词：玉树地震小波功率谱连续小波变换亮温异常频率域时间序列空间区域

Experiment and numerical simulation on the temperature rise in the fill process of hydrogen for 150 L 35 MPa composite storage cylinders

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Experiment and numerical simulation on the temperature rise ...

超声引导下的空芯针活检在颈部淋巴结肿大中的作用:一项对6695例病例的回顾性研究

第九届全国氢能学术会议

作者： Y.L.Liu~1,J.Y.Zheng~1,Y.Z.Zhao~1,P.Xu~1,L.F.Zhang~2,H.Zhao~2,t.xie~2,R.H.Sheng~2 ~1 Zhejiang University,China ~2 Beijing LvNeng power sources corporation,China

As a high fill velocity of hydrogen is needed to full fill the storage cylinders,it may lead to temperature rise and heterogeneity inside *** this research,experiments for temperature rise test in the process of fast ...

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国际医学放射学杂志 2018年第4期 486-486页

作者： F.Han M.Xu t.xie J.W.Wang Q.G.Lin Z.X.Guo 郑孝飞 Department of Ultrasound State Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineSun Yat-Sen University Cancer Center

目的为确定超声引导下的空芯针活检(US-CNB)在颈部淋巴结肿大中的诊断率并找出影响其诊断准确率的因素。方法回顾性分析2004—2017年间因颈部淋巴结肿大而行超声引导下的空芯针活检的6 695例记录。结果92.19%(6 172/6 695)的病例取得了... 详细信息

目的为确定超声引导下的空芯针活检(US-CNB)在颈部淋巴结肿大中的诊断率并找出影响其诊断准确率的因素。方法回顾性分析2004—2017年间因颈部淋巴结肿大而行超声引导下的空芯针活检的6 695例记录。结果92.19%(6 172/6 695)的病例取得了足够的组织样本。大多数淋巴结(67.65%)为恶性(转移瘤4 131、淋巴瘤398)。鉴别良恶性病变的总体准确度为91.70%(6 139/6 695)。对于取得了足够组织样本的超声引导下的空芯针活检(US-CNB),其敏感度、特异度和准确度分别为99.70%、100%和99.46%。US-CNB成功与否与淋巴结的大小、性质(良性或恶性)和位置、穿刺的深度密切相关,而与活检针的尺寸(P=0.665)、取得的针芯组织的量(P=0.324)或恶性肿瘤病史(P=0.060)均无关。未见与活检过程相关的严重并发症。结论 US-CNB是一项安全且有效的诊断颈部淋巴结肿大的方法,该研究的发现可能有助于最大化诊断的准确率和充分利用取样过程,同时把有创性操作的损害最小化。

关键词：超声引导下 CNB 颈部淋巴结肿大

Ketogenic diet and cancer:multidimensional exploration and research

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Science China Life Sciences 2025年

作者： Shiyun Wan Xiaoxue Zhou Feng xie Fangfang Zhou Long Zhang the First Affiliated Hospital the Institutes of Biology and Medical Sciences Suzhou Medical College Soochow University School of Medicine Hangzhou City University Life Sciences Institute and State Key Laboratory of transvascular Implantation Devices of the Second Affiliated Hospital of Zhejiang University School of Medicine Zhejiang University the MOE Basic Research and Innovation Center for the targeted therapeutics of Solid tumors The First Affiliated Hospital Jiangxi Medical College Nanchang University Cancer Center Zhejiang University

the ketogenic diet(KD) has attracted attention in recent years for its potential anticancer effects. KD is a dietary structure of high fat,moderate protein, and extremely low carbohydrate content. Originally introduced as a treatment for epilepsy, KD has been widely applied in weight loss programs and the management of metabolic diseases. Previous studies have shown that KD can potentially inhibit the growth and spread of cancer by limiting energy supply to tumor cells, thereby inhibiting tumor angiogenesis, reducing oxidative stress in normal cells, and affecting cancer cell signaling and other processes. Moreover, KD has been shown to influence t-cell-mediated immune responses and inflammation by modulating the gut microbiota, enhance the efficacy of standard cancer treatments, and mitigate the complications of chemotherapy. However, controversies and uncertainties remain regarding the specific mechanisms and clinical effects of KD as an adjunctive therapy for cancer. therefore, this review summarizes the existing research and explores the intricate relationships between KD and cancer treatment.

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多发性硬化的大脑皮质变薄与认知改变相关而与视神经脊髓炎无关

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国际医学放射学杂志 2014年第6期 602-602页

作者： Y.Liu t.xie Y.He Y.Duan J.Huang Z.Ren 谢兵 Department of Radiology Xuanwu HospitalCapital Medical University

摘要目的比较视神经脊髓炎(NMO)和多发性硬化(MS)在皮质厚度变化的空间模式上的差异,并探讨大脑皮质变薄和临床变量之间的相关性。方法研究募集了23例

关键词：视神经脊髓炎认知改变多发性硬化大脑皮质