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Identification of thermal effects involved in DSC experiment on Al-Cu-Mg-Ag alloys with high Cu:Mg ratio

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International Journal of Minerals,Metallurgy and Materials 2011年第6期18卷 671-675页

作者： Jian-bo Zhang Yong-an Zhang bao-hong zhu Feng wang Zhi-hui Li Xi-wu Li Bai-qing Xiong State Key Laboratory of Nonferrous Metals and Processes General Research Institute for Non-ferrous Metals Beijing 100088 China

Precipitation reactions in the differential scanning calorimetry （DSC） of an Al-Cu-Mg-Ag alloy were identified by analyzing the results from hardness test,electrical conductivity test,and transmission electron microscope （TEM） *** is discovered that thermal effects can be identified through selected area electron diffraction and bright-field *** reaction peaks around 171,231,and 276℃ can be attributed to a structural rearrangement of coherent zones,to the precipitation of Ω phases,and to the precipitation of Ω and θ＇ and possible combination with the transition of θ＇→θ,*** addition,the hardness and electrical conductivity of the alloy change proportionately with the progression of reactions during the heating *** phenomenon can be attributed to the evolution of the micro-structure.

关键词： aluminum alloys thermal effects identification differential scanning calorimetry microstructure

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主动脉夹层患者院内死亡危险因素分析

中国全科医学 2017年第30期20卷 3740-3744页

作者：张炜宗马翔王宝珠汪浩浙江省杭州市余杭区第一人民医院心内科 311100 新疆医科大学第一附属医院冠心病二科新疆乌鲁木齐市830054

目的探讨主动脉夹层(AD)患者院内死亡的危险因素,为临床制定有效的治疗方案提供参考。方法收集2010年1月—2012年1月新疆医科大学第一附属医院心脏重症监护室收治的符合纳入标准的224例AD患者的临床资料,根据患者住院期间是否死亡分为... 详细信息

目的探讨主动脉夹层(AD)患者院内死亡的危险因素,为临床制定有效的治疗方案提供参考。方法收集2010年1月—2012年1月新疆医科大学第一附属医院心脏重症监护室收治的符合纳入标准的224例AD患者的临床资料,根据患者住院期间是否死亡分为存活组(201例)和死亡组(23例)。回顾性分析患者的临床资料(包括一般情况、基础体征、临床指标),并分析其院内死亡的危险因素。结果两组患者饮酒史、高血压史、发病时间、De Bakey分型、入院后手术情况比较,差异有统计学意义(P<0.05)。死亡组患者舒张压、红细胞计数、红细胞比容、嗜酸粒细胞百分比、嗜碱粒细胞百分比、嗜酸粒细胞计数、嗜碱粒细胞计数、血红蛋白、血小板计数、血小板压积、总蛋白、球蛋白、凝血酶原时间活动度、纤维蛋白原低于存活组,空腹血糖、载脂蛋白AI高于存活组,凝血酶原时间长于存活组,国际标准化比率、主动脉窦部直径大于存活组(P<0.05)。以患者院内死亡情况为因变量,将上述单因素分析筛选出来的P<0.01的变量为自变量进行多因素Logistic回归分析,得到回归方程:Y=0.555-8.124×嗜碱粒细胞计数-0.036×血红蛋白+0.104×主动脉窦部直径。结论嗜碱粒细胞计数、血红蛋白是AD患者院内死亡的保护因素,主动脉窦部直径是独立危险因素。提示临床可加强对AD住院患者上述指标的监测。

关键词：医院死亡率主动脉夹层危险因素

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赋香型麦冬颗粒的制备及在卷烟滤棒中的应用

化学研究与应用 2016年第11期28卷 1639-1646页

作者：吴家灿廖头根王猛凌军朱保昆王明锋云南中烟工业有限责任公司技术中心云南昆明650231

基于不燃烧调香的理念和麦冬的生物活性成分和口味特征,针对目前低焦卷烟风格特征弱化和感官舒适性下降等问题,通过流化床造粒工艺开发赋香型麦冬颗粒并进行滤棒添加应用实验。(1)利用响应面优化法,获得麦冬多孔颗粒的最佳工艺条件;(2)... 详细信息

基于不燃烧调香的理念和麦冬的生物活性成分和口味特征,针对目前低焦卷烟风格特征弱化和感官舒适性下降等问题,通过流化床造粒工艺开发赋香型麦冬颗粒并进行滤棒添加应用实验。(1)利用响应面优化法,获得麦冬多孔颗粒的最佳工艺条件;(2)所制备的麦冬颗粒经粒径分析和结构表征,应用于卷烟滤棒改善抽吸舒适性,提升烟气在口腔中的津润感和甜感,有效降低主流烟气的燥热感,强化卷烟产品的清甜香风格特征;(3)采用HPLC-EIS/MS法,多反应监测模式(MRM)对烟气粒相物中的麦冬成分进行初步的定性分析。

关键词：麦冬颗粒响应面优化风格特征定性分析

双乙酸钠对苜蓿与小麦混合青贮发酵品质和有氧稳定性的影响

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中国草地学报 2017年第2期39卷 85-89页

作者：刘振阳孙娟娟姜义宝玉柱王成章河南农业大学牧医工程学院河南郑州450002 中国农业科学院草原研究所内蒙古呼和浩特010010 中国农业大学草地研究所北京100193

苜蓿和小麦按照3∶7重量比进行混合青贮,添加0.1%、0.3%和0.5%的双乙酸钠,以未添加作为对照,常温下贮存,分别在30、45和60d检测青贮饲料的发酵品质及有氧稳定性。结果表明:苜蓿与小麦混合青贮各组pH值均降到了4.2以下,双乙酸钠添加组比... 详细信息

苜蓿和小麦按照3∶7重量比进行混合青贮,添加0.1%、0.3%和0.5%的双乙酸钠,以未添加作为对照,常温下贮存,分别在30、45和60d检测青贮饲料的发酵品质及有氧稳定性。结果表明:苜蓿与小麦混合青贮各组pH值均降到了4.2以下,双乙酸钠添加组比对照组具有更低的pH值和NH_3-N/TN,0.5%组显著低于对照组(P<0.05);添加组乳酸和乙酸含量高于对照组,并分别在0.3%和0.5%组差异显著(P<0.05);随着添加量提高青贮饲料有氧变质时间明显延长(P<0.05),以0.5%添加量效果最好。添加双乙酸钠明显改善了混合青贮饲料发酵品质和有氧稳定性。

关键词：双乙酸钠苜蓿小麦混合青贮

Einstein Probe discovery of EP240408a: A peculiar X-ray transient with an intermediate timescale

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 222-240页

作者： Wenda Zhang Weimin Yuan Zhixing Ling Yong Chen Nanda Rea Arne Rau Zhiming Cai Huaqing Cheng Francesco Coti Zelati Lixin Dai Jingwei Hu Shumei Jia Chichuan Jin Dongyue Li Paul O’Brien Rongfeng Shen Xinwen Shu Shengli Sun Xiaojin Sun Xiaofeng wang Lei Yang Bing Zhang Chen Zhang Shuang-Nan Zhang Yonghe Zhang Jie An David Buckley Alexis Coleiro Bertrand Cordier Liming Dou Rob Eyles-Ferris Zhou Fan Hua Feng Shaoyu Fu Johan P.U.Fynbo Lluis Galbany Saurabh W.Jha Shuaiqing Jiang Albert Kong Erik Kuulkers Weihua Lei Wenxiong Li Bifang Liu Mingjun Liu Xing Liu Yuan Liu zhu Liu Chandreyee Maitra Alessio Marino Itumeleng Monageng Kirpal Nandra Jeremy Sanders Roberto Soria Lian Tao Junfeng wang Song wang Tinggui wang Zhongxiang wang Qingwen Wu Xuefeng Wu Dong Xu Yanjun Xu Suijian Xue Yongquan Xue Zijian Zhang Zipei zhu Hu Zou Congying bao Fansheng Chen Houlei Chen Tianxiang Chen Wei Chen Yehai Chen Yifan Chen Chenzhou Cui Weiwei Cui Yanfeng Dai Dongwei Fan Ju Guan Dawei Han Dongjie Hou Haibo Hu Maohai Huang Jia Huo Zhenqing Jia Bowen Jiang Ge Jin Chengkui Li Junfei Li Longhui Li Maoshun Li Wei Li Zhengda Li Tianying Lian Congzhan Liu Heyang Liu Huaqiu Liu Fangjun Lu Laidan Luo Jia Ma Xuan Mao Haiwu Pan Xin Pan Liming Song Hui Sun Yunyin Tan Qingjun Tang Yihan Tao Hao wang Juan wang Lei wang Wenxin wang Yilong wang Yusa wang Qinyu Wu Haitao Xu Jingjing Xu Xinpeng Xu Yunfei Xu Zhao Xu Changbin Xue Yulong Xue Ailiang Yan Haonan Yang Xiongtao Yang Yanji Yang Juan Zhang Mo Zhang Wenjie Zhang Zhen Zhang Zhen Zhang Ziliang Zhang Donghua Zhao Haisheng Zhao Xiaofan Zhao Zijian Zhao Hongyan Zhou Yilin Zhou Yuxuan zhu Zhencai zhu National Astronomical Observatories Chinese Academy of Sciences School of Astronomy and Space Sciences University of Chinese Academy of Sciences Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Institute of Space Sciences (ICE) CSIC Institut d’Estudis Espacials de Catalunya (IEEC) Max Planck Institute for Extraterrestrial Physics Innovation Academy for Microsatellites Chinese Academy of Sciences Department of Physics University of Hong Kong School of Physics and Astronomy University of Leicester School of Physics and Astronomy Sun Yat-sen University Department of Physics Anhui Normal University Shanghai Institute of Technical Physics Chinese Academy of Sciences Physics Department Tsinghua University Nevada Center for Astrophysics University of Nevada Las Vegas Department of Physics and Astronomy University of Nevada Las Vegas South African Astronomical Observatory Department of Astronomy University of Cape Town Department of Physics University of the Free State Université Paris Cité CNRS Astroparticule et Cosmologie Université Paris Cité CEA Paris-Saclay IRFU/DAp-AIM Department of Astronomy Guangzhou University Cosmic Dawn Center (DAWN) Niels Bohr Institute University of Copenhagen Department of Physics and Astronomy Rutgers the State University of New Jersey Institute for Cosmic Ray Research The University of Tokyo ESA/ESTEC Department of Astronomy School of Physics Huazhong University of Science and Technology INAF-Osservatorio Astrofisico di Torino Sydney Institute for Astronomy School of Physics The University of Sydney Department of Astronomy Xiamen University Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University Department of Astronomy University of Science and Technology School of Astronomy and Space Sciences University of Science and Technology of China Institute of Deep Space Sciences Deep Space Exploration Laboratory Department of Astronomy School of Physics and Astronomy Yunnan University Shanghai Astronomical Observatory Chi

We report the discovery of a peculiar X-ray transient,EP240408a,by Einstein Probe （EP） and follow-up studies made with EP,Swift,NICER,GROND,ATCA and other ground-based multiwavelength *** new transient was first detected with Wide-field X-ray Telescope （WXT） on board EP on April 8th,2024,manifested in an intense yet brief X-ray flare lasting for *** flare reached a peak flux of 3.9×10-9erg cm-2s-1in 0.5-4 ke V,～300 times brighter than the underlying X-ray emission detected throughout the *** and more precise follow-up observations by EP/FXT,Swift and NICER confirmed the finding of this new *** X-ray spectrum is non-thermal in 0.5-10 ke V,with a power-law photon index varying *** X-ray light curve shows a plateau lasting for ～4 d,followed by a steep decay till becoming undetectable ～10 d after the initial *** on its temporal property and constraints from previous EP observations,an unusual timescale in the range of 7-23 d is found for EP240408a,which is intermediate between the commonly found fast and long-term *** counterparts have been found in optical and near-infrared,with the earliest observation at 17 h after the initial X-ray detection,suggestive of intrinsically weak emission in these *** demonstrate that the remarkable properties of EP240408a are inconsistent with any of the transient types known so far,by comparison with,in particular,jetted tidal disruption events,gamma-ray bursts,X-ray binaries and fast blue optical *** nature of EP240408a thus remains an *** suggest that EP240408a may represent a new type of transients with intermediate timescales of the order of～10 *** detection and follow-ups of more of such objects are essential for revealing their origin.

关键词： X-ray transients ${\bm~{Einstein~~Probe}}$

Ultralong Stretchable Soft Actuator(US2A):Design,Modeling and Application

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Chinese Journal of Mechanical Engineering 2023年第1期36卷 280-291页

作者： Wenbiao wang Yunfei zhu Shibo Cai Guanjun bao Key Laboratory of Special Purpose Equipment and Advanced Processing Technology Ministry of EducationZhejiang University of TechnologyHangzhou310014China Beijing Institute of Spacecraft Environment Engineering China Academy of Space TechnologyBeijing100094China

Actuator plays a significant role in soft *** paper proposed an ultralong stretchable soft actuator(US2A)with a variable and sizeable maximum *** US2A is composed of a silicone rubber tube and a bellows woven *** maximal extension can be conveniently regulated by just adjusting the wrinkles’initial angle of the bellows woven *** kinematics of US2A could be obtained by geometrically analyzing the structure of the bellows woven sleeve when the silicone rubber tube is *** on the principle of virtual work,the actuating models have been established:the pressure-elongation model and the pressure-force *** models reflect the influence of the silicone tube’s shell thickness and material properties on the pneumatic muscle’s performance,which facilitates the optimal design of US2A for various working *** experimental results showed that the maximum elongation of the US2A prototype is 257%,and the effective elongation could be variably regulated in the range of 0 and 257%.The proposed models were also verified by pressure-elongation and pressure-force experiments,with an average error of 5%and 2.5%,***,based on the US2A,we designed a pneumatic rehabilitation glove,soft arm robot,and rigid-soft coupling continuous robot,which further verified the feasibility of US2A as a soft driving component.

关键词： Soft robotics Soft actuator Pneumatic artificial muscle Modeling

Size effect in the Al3Sc dispersoid-mediated precipitation and mechanical/electrical properties of Al-Mg-Si-Sc alloys

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Journal of Materials Science & Technology 2020年第22期54卷 78-84页

作者： Ruihong wang Shengyu Jiang bao'an Chen Zhixiang zhu School of Materials Science and Engineering Xi'an University of TechnologyXi'an710048PR China State Key Laboratory of Advanced Power Transmission Technology Global Energy Interconnection Research Institute Co.Ltd.Beijing102209PR China

A significant size effect is found in the Al3 Sc dispersoid-mediated precipitation in an Al-Mg-Si-Sc *** the Al3 Sc dispersoid size smaller than about 40 nm,β " precipitates nucleate directly on the coherent dispersoids and grow by sacrificing the *** the dispersoid size greater than^40 nm,Q' and U2 phases are additionally produced that nucleate on the dislocations induced by the semi-/incoherent *** and electrical properties are highly sensitive to the Al3 Sc dispersoid-tuned *** co-precipitation of β",Q' and U2 phases leads to an obvious improvement in hardness and simultaneously in electrical conductivity.

关键词： Al-Mg-Si-Sc alloy Al3Sc dispersoids Precipitation Size effect Hardness and conductivity

Effects of vertical excitation on the seismic performance of a seismically isolated bridge with sliding friction bearings

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Earthquake Engineering and Engineering Vibration 2016年第1期15卷 187-196页

作者： wang Changfeng Zhao Jikang zhu Long bao Yijun School of Civil Engineering Yantai University School of Civil Engineering Lanzhou Jiaotong University

A finite element model is constructed for a sliding friction bearing in a seismically isolated bridge under vertical excitation with contact/friction elements. The effects of vertical excitation on the seismic performance of a seismically isolated bridge with sliding friction bearings and different bearing friction coefficients and different stiffness levels （pier diameter） are discussed using example calculations, and the effects of excitation direction for vertical excitation on the analysis results are explored. The analysis results shows that vertical excitation has a relatively large impact on seismic performance for a seismically isolated bridge with sliding friction bearings, which should be considered when designing a seismically isolated bridge with sliding friction bearings where vertical excitation dominates.

关键词： vertical excitation seismically isolated bridge sliding friction bearing seismic analysis

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弃耕地苜蓿耗水规律及灌溉制度研究

水土保持学报 2003年第3期17卷 165-166,173页

作者：范文波刘换芳朱保荣王振华石河子大学水利建筑工程学院新疆石河子832003

通过对弃耕地苜蓿生长过程中水分变化的研究,发现在苜蓿生长的苗期、分枝期和花期,日平均耗水强度依次表现出递增的趋势,结实期则有所下降;水分变化与生长过程具有相似的变化规律。初步给出了弃耕地苜蓿生长过程中灌溉制度。

关键词：弃耕地苜蓿耗水规律灌溉制度生长过程水分变化引种