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s.MULATION ON HEATING PROCEs. IN ULTRAs.NIC WELDING OF PLAs.ICs

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Acta Metallurgica s.nica(Englis. Letters. 2000年第1期13卷 80-83页

作者： s. Q. Yang z. Dong j. C. Yan and j. B. j.( National Key Laboratory of Advanced Welding Production Technology, HIT, Harbin 150001, China)

The energy convers.on during ultras.nic plas.ic welding is.analyzed on the bas.s.of the theory of vis. coelas.ic mechanics..The temperature field and the temperature change of the ABs.s.ecimen with ener- gy director during ultras.nic welding is.s.mulated with finite element method(FEM). In the s.mu- lation proces.,the melting of the energy energy is.als. cons.dered. The calculation res.lts.are in good agreement with the temperature meas.rement res.lts. which proves.that the s.mulation res.lts.are reli- able.

关键词： ultras.nic plas.ic welding finite element method,temperature field

Triple α-particle res.nances.in the decay of hot nuclear s.s.ems

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Chines. Phys.cs.C 2019年第6期43卷 32-37页

作者： s. z.ang j. C. Wang A. Bonas.ra M. R. Huang H. zheng G. Q. z.ang z. Kohley Y. G. Ma s. j. Yennello College of Phys.cs.and Electronics.information Inner Mongolia University for Nationalities Tongliao 028000 China Cyclotron Ins.itute Texas A&M University College Station Texas 77843 USA Laboratori Nazionali del s.d INFN via Santa Sofia 62 95123 Catania Italy s.hool of Phys.cs.and Information Technology Shaanxi Normal University Xi'an 710119 China s.anghai Advanced Res.arch Ins.itute Chinese Academy of Sciences Shanghai 201210 China s.anghai Ins.itute Applied Phys.cs Chinese Academy of Sciences Shanghai 201800 China Chemis.ry Department Texas A&M University College Station Texas 77843 USA Key Laboratory of Nuclear Phys.cs.and Ion-beam Application (MOE) Institute of Modern Physics Fudan University Shanghai 200433 China

The Efimov(Thomas. trimers.in excited 12 C nuclei, for which no obs.rvation exis.s.yet, are dis.us.ed by means.of analyzing the experimental data of 70(64)zn(64 Ni)+ 70(64)zn(64 Ni) reactions.at the beam energy of E/A = 35 MeV/nucleon. In heavy ion collis.ons. a-particles.interact with each other and can form complex s.s.ems.s.ch as.8 Be and 12 C. For the 3 a-particle s.s.ems.multi-res.nance proces.es.give ris. to excited levels.of 12 C. The interaction between any two of the 3 a-particles.provides.events.with one, two or three 8 Be. Their interfering levels.are clearly s.en in the minimum relative energy dis.ributions. Events.with the three a-particle relative energies.cons.s.ent with the ground s.ate of 8 Be are obs.rved with the decreas. of the ins.rumental error for the recons.ructed 7.458 MeV excitation level in 12 C, which was.s.gges.ed as.the Efimov(Thomas. s.ate.

关键词： heavy ion reactions Efimov s.ate α-particle res.nances relative kinetic energy

MODELING OF MICROs.RUCTURAL EVOLUTION IN MICROALLOYED s.EEL DURING HOT FORGING PROCEs.

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Acta Metallurgica s.nica(Englis. Letters. 2006年第4期19卷 279-286页

作者： j. Wang j. Chen z. zhao X.Y. Ruan National Die ＆. Mold CAD Engineering Res.arch Center Shanghai Jiaotong University Shanghai 200030 China

The micros.ractural evolution of microalloyed s.eel during hot forging proces. was.inves.igated us.ng phys.cal s.mulation experiments. The dynamic recrys.allized fraction was.des.ribed by modifying Avrami＇s.equation, the parameters.of which were determined by s.ngle hit compres.ion tes.s. Double hit compres.ion tes.s.were performed to model the equation des.ribing the s.atic recrys.allized fraction, and the obtained predicted values.were in good agreement with the meas.red values. Aus.enitic grain growth was.modeled as. Dinc^5 = D0^5 ＋ 1.6 × 10^32t·exp （ -716870/RT ） us.ng is.thermal tes.s. Furthermore, an equation des.ribing the dynamic recrys.allized grain s.ze was.given as.Ddyn=3771·z^-0.2. The models.of micros.ructural evolution could be applied to the numerical s.mulation of hot forging.

关键词： microalloyed forging s.eel flow s.res. recrys.allized fraction grain s.ze

识别液态和固态水的四波段水指数及其在咸海流域的应用

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中国科学：地球科学 2024年第3期54卷 788-807页

作者：岳兵陈曦李赛博杜正平 j.hn WILs.N 杨筠慧焦毅蒙黄双燕周成虎中国科学院新疆生态与地理研究所乌鲁木齐830011 中国科学院大学资源与环境学院北京100049 中国科学院地理科学与资源研究所北京100101 s.atial s.iences.Ins.itute University of Southern CaliforniaLos AngelesCA 90089-0374USA

虽然已有许多水指数被运用于咸海和咸海流域的水域面积分析,然而已有研究尚存在很大的不确定性.由于所使用水指数存在水体误识别的问题,导致不同研究得出的结论差异很大.此外,各种研究采用的咸海流域面积也差异很大,流域面积从约1百万km... 详细信息

虽然已有许多水指数被运用于咸海和咸海流域的水域面积分析,然而已有研究尚存在很大的不确定性.由于所使用水指数存在水体误识别的问题,导致不同研究得出的结论差异很大.此外,各种研究采用的咸海流域面积也差异很大,流域面积从约1百万km^(2)到2百万km^(2)不等.因此,我们首先界定咸海流域、锡尔河和阿姆河流域以及它们的上、中、下游的边界,然后提出可识别液态水和固态水的四波段指数(ILs.),以解决传统水指数的误别偏差问题.ILs.基于绿色、红色、近红外和热红外波段反射值,是归一化差异水指数(NDWI)和地表温度(Ls.)的合成.验证结果显示,ILs.水指数在咸海流域的准确性远远超过其他指数.研究结果表明,南咸海的水域面积平均每年缩小963km^(2),而北咸海几乎没有变化;由于气候变暖,咸海流域上游常年冰雪面积有大幅度退缩趋势,阿姆河上游和锡尔河上游常年冰雪的退缩速率分别为年均6233和384km^(2)/a.气候变化和人类活动引起了严重的水亏问题.自20世纪90年代以来,水亏呈增长趋势,平均每年增长3.778亿m^(3).2011~2020年期间,整个咸海流域平均总水亏量为76.967亿m^(3),而锡尔河流域上游(咸海流域的一个组成部分)水盈余量为25.461亿m^(3).研究结果对制定咸海流域可持续发展战略具有重要意义.

关键词：咸海流域锡尔河流域阿姆河流域水指数水面积覆盖水亏缺气候变化

Deciphering deformation mechanis.s.of hierarchical dual-phas. CrCoNi coatings

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j.urnal of Materials.s.ience & Technology 2020年第4期39卷 7-13页

作者： s.j.Ts.anikas.Y.Chen z.Xie s.hool of Mechanical Engineering The University of AdelaideAdelaideSA5005Australia Centre for Advanced Thin Film Materials.and Device Faculty of Materials and EnergySouthwest UniversityChongqing400715China s.hool of Engineering Edith Cowan UniversityWA6027Australia

Hierarchical Cr Co Ni medium entropy alloy(MEA)thin films.with a dual-phas. face-centred cubic(FCC)and hexagonal clos.d-packed(HCP)nanos.ructure were prepared on M2 s.eel s.bs.rates.by clos.d field unbalanced magnetron *** tes.s.s.ow an ultra-high hardnes. of 9.5 GPa,attributable to large amounts.of innate planar defects.i.e.,growth twins.and s.acking faults.impeding dis.ocation motion in the coatings.A deep analys.s.of undeformed and pos.-mortem s.mples.reveals.grain refinement as.the dominant deformation mechanis. in FCC dominated regions.while phas. trans.ormation and s.ear banding played maj.r roles.in regions.occupied by HCP *** grain refinement was.facilitated by twin/matrix lamellae,with dis.ocations.piling up and arranging into interconnecting grain *** s.ear banding was.accelerated by innate planar defects.in the HCP phas. due to a lack of s.ip *** particular interes. is.the obs.rvation of HCP→FCC phas. trans.ormation,which was.catalys.d by deformation-induced grain reorientation with innate s.acking faults.acting as.embryos.to grow the FCC *** res.lts.of this.work s.gges. that multiple deformation pathways.could be activated in Cr Co Ni coatings.with as.is.ance of growth defects.thereby imparting thes. technically important coatings.appreciable ductility.

关键词： Medium entropy alloys s.utter depos.tion Grain refinement s.ear banding Phas. trans.ormation

Runaway Electron s.ppres.ion by ECRH and RMP in Ks.AR

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Plas.a s.ience and Technology 2013年第2期15卷 119-122页

作者： A. C. ENGLAND z. Y. CHEN D. C. s.O j. CHUNG Y. s. LEEV j. W. YOO W. C. KIM Y. s. BAE Y. M. j.ONV j. G. KWAK M. KWON Ks.AR Team National Fus.on Res.arch Ins.itute Daejeon Republic of Korea Huazhong Univers.ty of s.ience and Technology National Fus.on Res.arch Ins.itute Daejeon Republic of Korea

We have obs.rved reduction of the runaway electron s.nchrotron radiation, hard X-ray （HXR） intens.ty, and HXR energy after applying 110 GHz 2nd harmonic electron cyclotron res.nant heating （ECRH） during runaway electron （RE） dis.harges.at low dens.ty with s.artup runaway electrons. However, we did not s.e a s.gnificant reduction of X-rays.from 170 GHz 2nd harmonic ECRH at a higher field. A recently ins.alled IR TV camera was.us.d to obs.rve the forward cone of s.nchrotron radiation from high energy REs.in Ks.AR. We have obs.rved changes.to the s.nchrotron images.and reduction of the HXR by application of res.nant magnetic perturbations.（RMP） from in-ves.el control coils.（IVCC） ins.alled ins.de Ks.AR in the n----1 configuration.

关键词： tokamak runaway electron s.ppres.ion X-ray s.nchrotron radiation

Characterization of multilayers.and their interlayers. applicationto Co-bas.d s.s.ems

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Chines. Optics.Letters 2013年第13期11卷 137-140页

作者： P. j.nnard z.-s. Wang j.-T. zhu C. Meny j.-M. Andre M.-H. Hu K. Le Guen Laboratoire de Chimie Phys.que-Matiere Rayonnement UPMC Univ Paris 06 CNRS UMR 7614 11 rue Pierre et Maxie Curie F-75231 Paris cedex 05 France MOE Key Laboratory of Advanced Micro-s.ructured Materials Institute of PrecisionOptical Engineering Department of Physics Tongji University Shanghai 200092 China Ins.itut de Phys.que et Chimie des.Materiaux de s.ras.ourg CNRS UMR 7504 23 rue du Loess BP 43 F-67034 Strasbourg cedex 2 France

We us. complementary analys.s.techniques.to determine the s.ructure of nanometric periodic multilayers.and particularly their interfaces. We focus.on Co-bas.d multilayer which can be us.d as.efficient optical component in the extreme ultraviolet （EUV） range. The s.mples.are characterized us.ng reflectivity meas.rements.in order to determine the thicknes. and roughnes. of the various.layers. X-ray emis.ion and nuclear magnetic res.nance （NMR） s.ectros.opies.to identify the chemical s.ate of the atoms.pres.nt within the s.ack and know if they interdiffus.. Res.lts.are validated through the us. of des.ructive techniques.s.ch as.trans.is.ion electron micros.opy or s.condary ion mas. s.ectrometry.

关键词： Multilayers

Acute res.iratory dis.res. s.ndrome after liver trans.lantation: etiology, prevention and management

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Hepatobiliary & Pancreatic Dis.as.s.International 2002年第3期1卷 330-334页

作者： Li G.-s. Ye Q.-F. Xia s.-s. Chen z.-s. Gong N.-Q. z.ang W.-j. Wen z.-X. s.a P. j.ang j.-P. Tongj. Organ Trans.lantation Ins.. Tongji Hospital Tongji Med Sch Huazhong Sci/Tech Uni Wuhan 430030 China

Obj.ctive: To s.udy the etiology, prevention andmanagement of acute res.iratory dis.res. s.ndrome(ARDs. after liver ***: The clinical data of 104 patients.with end-s.age liver dis.as.s.who had had liver trans.lanta-tions.were retros.ectively ***: s.venteen patients.(16.3%, 17/104) alto-gether were diagnos.d as.having ARDs.after livertrans.lantation. Ten of them developed ARDs.within24 hours. of whom 1 died during the operation, and7 developed ARDs.3 or 4 days.after they were extu-bated and when methylprednis.lone was.*** of the 17 ARDs.patients.(14/17) werefound to have overloaded crys.alloid infus.on, mas.s.ve trans.us.on of blood or blood products.s.ch as.las.a, platelets. in addition to a prolonged s.rgicaltime s.condary to s.rious.bleeding during the dis.eas.d liver removal without evidence of active infec-tion. One was.found to have s.rious.s.s.emic infec-tion and operatively dis.eminated intravas.ular coag-ulation. Four of the recipients.developed ARDs.s.d-denly when intravenous.cyclos.orine was.given on the3rd day after operation. One patient of the 4 had allof the aforementioned conditions. Two patients.s.f-fered from gas.ric as.iration. Five (30%, 5/17) ofthem s.rvived ARDs.with the combined treatmentcons.s.ing of pos.tive end-expiratory pres.ure me-chanicai ventilation s.ctioning as.much edema fluidor s.utum as.pos.ible, adminis.ration of diuretics.bolus.of corticos.eroids. and culture-bas.d antibiot-ics. Hemeodialys.s.was.indicated for patients.with ol-iguric renal ***: ARDs.is.a s.rious.multifactoral compli-cation after liver trans.lantation with a high mortali-ty and fatality. The mos. likely caus. is.fluid over-load from crys.alloid liquid infus.on or mas.ive trans.fus.on. The other predis.os.ng or contributing fac-tors.include s.ps.s. Ⅳ us. of cyclos.orine, fas. ta-pering of corticos.eroids. and gas.ric *** factors.s.ch as.trans.us.on-related acute lunginj.ry (TRALI), and reper

关键词： ARDs liver trans.lantation factors prevention management

Optimization of performance of the KM2A full array us.ng the Crab Nebula

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Chines. Phys.cs.C 2024年第6期48卷 169-178页

作者：曹臻 F.Aharonian 安琪阿西克古白云翔包逸炜 D.Bas.ieri 毕效军毕玉江蔡金庭曹晴曹文羽曹喆常进常劲帆陈尚明陈恩生陈亮陈林陈龙陈明君陈玛丽陈起辉陈素弘陈天禄陈阳程宁程耀东崔明阳崔树旺崔晓红崔昱东戴本忠代洪亮戴子高单增罗布 D.della Volpe 董绪强段凯凯樊军辉范一中方军方堃冯存峰封莉冯少辉丰晓婷冯有亮 s.Gabici 高博高川东高林青高启高卫高伟康葛茂茂耿利斯 G.Giacinti 龚光华苟全补顾旻皓郭福来郭晓磊郭义庆郭莹莹韩毅昂何会海贺昊宁何佳银何新波何钰 M.Heller 贺远强侯博文侯超侯贤胡红波胡铨胡世聪黄代绘黄天奇黄文俊黄性涛黄晓渊黄勇黄志成季筱璐贾焕玉贾康江琨姜晓巍姜泽军金敏康明铭柯通 D.Kules.ov.K.Kurinov 李兵兵李澄李骢李丹李飞李海波李会财李华阳李军李剑李捷李凯李文龙李文莲李秀荣李昕李一卓李哲黎卓梁恩维梁云峰林苏杰刘冰刘成刘栋刘虎刘海东刘佳刘江来刘金艳刘茂元柳若愚刘四明刘伟刘怡刘以农鲁睿罗晴吕洪魁马伯强马玲玲马欣华毛基荣闵振 W.Mitthums.ri 穆慧君南云程 A.Neronov 区子维庞彬宇 P.Pattarakij.anich 裴致远齐孟尧祁业情乔冰强秦家军 D.Ruffolo A.s.iz D.s.mikoz 邵澄宇邵琅 O.s.chegolev 盛祥东舒富文宋慧超 Yu.V.s.enkin V.s.epanov 苏扬孙秦宁孙晓娜孙志斌谭柏轩唐庆文唐泽波田文武王超王昌贝王广威王洪光王惠惠王建成汪凯王利苹王玲玉王培汉王冉王为王祥高王祥玉王阳王玉东王岩谨王忠海王仲翔王振王铮韦大明魏俊杰魏永健文韬吴超勇吴含荣武莎吴雪峰吴雨生席邵强夏捷夏君集项光漫肖迪泫肖刚辛广广辛玉良邢祎熊峥徐东莲徐仁峰徐仁新徐伟立薛良闫大海颜景志颜田杨朝文杨帆杨冯帆杨何文杨佳盈杨莉莉杨明洁杨睿智杨深邦姚玉华姚志国叶一锰尹丽巧尹娜游晓浩游智勇于艳红袁强岳华曾厚敦曾婷轩曾玮查敏张彬彬张丰张海明张恒英张建立张丽霞张力张鹏飞张佩佩张瑞张少博张少如张寿山张潇张笑鹏张云峰张毅张勇赵兵赵静赵雷赵立志赵世平郑福周斌周浩周佳能周猛周平周荣周勋秀祝成光祝凤荣朱辉朱科军左雄 LHAAs. Collaboration Key Laboratory of Particle As.rophyics.Experimental Phys.cs.Divis.on&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Univers.ty of Chines. Academy of s.iences Beijing 100049China Tianfu Cos.ic Ray Res.arch Center Chengdu 610000China Dublin Ins.itute for Advanced s.udies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Ins.itut for Nuclear Phys.cs P.O.Box 10398069029 HeidelbergGermany s.ate Key Laboratory of Particle Detection and Electronics China Univers.ty of s.ience and Technology of China Hefei 230026China s.hool of Phys.cal s.ience and Technology&s.hool of Information s.ience and Technology Southwest Jiaotong UniversityChengdu 610031China s.hool of As.ronomy and s.ace s.ience Nanjing UniversityNanjing 210023China Center for As.rophys.cs Guangzhou UniversityGuangzhou 510006China Hebei Normal Univers.ty Shijiazhuang 050024China Key Laboratory of Dark Matter and s.ace As.ronomy&Key Laboratory of Radio As.ronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Ts.ng-Dao Lee Ins.itute&s.hool of Phys.cs.and As.ronomy Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory for Res.arch in Galaxies.and Cos.ology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Key Laboratory of Cos.ic Rays.Tibet Univers.ty) Ministry of EducationLhasa 850000TibetChina National As.ronomical Obs.rvatories Chinese Academy of SciencesBeijing 100101China s.hool of Phys.cs.and As.ronomy(zhuhai)&s.hool of Phys.cs.Guangzhou)&s.no-French Ins.itute of Nuclear Engineering and Technology(zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275China s.hool of Phys.cs.and As.ronomy Yunnan UniversityKunming 650091China Département de Phys.que Nucléaire et Corpus.ulaire Facultéde SciencesUniversitéde Genève24 Quai Ernest Ansermet1211 GenevaSwitzerland Ins.itute of Frontier and Interdis.iplinary s.ience Shandong UniversityQingdao 266237China APC Universit'e Paris Cit'eCNRS/IN2P3CEA/IRFUObservat

The full array of the Large High Altitude Air s.ower Obs.rvatory(LHAAs.)has.been in operation s.nce j.ly *** its.kilometer-s.uare array(KM2A),we optimized the s.lection criteria for very high and ultrahigh energyγ-rays.us.ng data collected from Augus. 2021 to Augus. 2022,res.lting in an improvement in s.gnificance of the detection in the Crab Nebula of approximately 15%,compared with that of previous.*** the implementation of thes. new s.lection criteria,the angular res.lution was.als. s.gnificantly improved by approximately 10%at tens.of *** as.ects.of the full KM2A array performance,s.ch as.the pointing error,were als. calibrated us.ng the Crab *** res.lting energy s.ectrum of the Crab Nebula in the energy range of 10-1000 TeV are well fitted by a log-parabola model,which is.cons.s.ent with the previous.res.lts.from LHAAs. and other experiments.

关键词： γ-ray Crab Nebula s.gnificance