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Work in Cooperation for A New Chapter in the Cause of International Human Rights——Speech by Yang Jiechi,Vice Minister of Foreign Affairs of the People's Republic of China at the Inaugural Session of the United Nations Human Rights Council
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《The Journal of Human Rights》 2006年第4期5-6,共2页
Mr Chairman, I would like to start by congratulating you, on behalf of the Chinese Govern- ment, on your assumption of the Chair of the inaugural session of the Human Rights Council. I have every confidence that unde... Mr Chairman, I would like to start by congratulating you, on behalf of the Chinese Govern- ment, on your assumption of the Chair of the inaugural session of the Human Rights Council. I have every confidence that under your able leadership this session will be successful. 展开更多
关键词 Speech by Yang Jiechi Vice Minister of Foreign Affairs of the People’s Republic of China at the Inaugural Session of the united Nations Human Rights Council Work in Cooperation for A New Chapter in the Cause of international Human Rights
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UNITED INTERNATIONAL CENTRAL CITY: A NEW SPATIAL ORGANIZATION MODEL IN TUMEN RIVER ECONOMY DEVELOPMENT ZONE 被引量:2
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作者 张平宇 《Chinese Geographical Science》 SCIE CSCD 1998年第4期83-89,共0页
This paper puts forward a new conceptual idea on constructing an international central city in the Tumen River Economy Development Zone (TREDZ) on the basis of analysis of the superiorities and problems in developing... This paper puts forward a new conceptual idea on constructing an international central city in the Tumen River Economy Development Zone (TREDZ) on the basis of analysis of the superiorities and problems in developing city, and from the view point of present social, economic and natural conditions in this area and the background of Northeast Asia. The united international central city is the best distribution model not only in its polycentric spatial structure but also in organizing form. Its feasibility and practicability are thoroughly proved from various aspects including urban planning principles, comparison of port cities, special characteristics of cooperation in TREDZ, and natural, social, cultural factors etc. 展开更多
关键词 unitED international CENTRAL city SPATIAL structure SPATIAL ORGANIZATION Tumen River ECONOMY Development ZONE
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Effect of external and internal cues on core muscle activation during the Sahrmann five-level core stability test
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作者 Skyla Stifter Jessie McCaffrey +2 位作者 Tyler Nichols Ayse Ozcan Edeer Justine Ward 《World Journal of Methodology》 2025年第1期95-104,共10页
BACKGROUND Pain in the back or pelvis or fear of back pain may affect the timing or cocontraction of the core muscles.In both static and dynamic movements,the Sahrmann core stability test provides an assessment of cor... BACKGROUND Pain in the back or pelvis or fear of back pain may affect the timing or cocontraction of the core muscles.In both static and dynamic movements,the Sahrmann core stability test provides an assessment of core muscle activation and a person's ability to stabilize the lumbopelvic complex.Preparatory cues and images can be used to increase the activation of these muscles.To attain optimal movement patterns,it will be necessary to determine what cueing will give the most effective results for core stability.AIM To investigate the effects of external and internal cues on core muscle activation during the Sahrmann five-level core stability test.METHODS Total 68 participants(21.83±3.47 years)were randomly allocated to an external(n=35)or internal cue group(n=33).Participants performed the Sahrmann fivelevel core stability test without a cue as baseline and the five-level stability exercises with an internal or external cue.External cue group received a pressure biofeedback unit(PBU),and the internal cue group received an audio cue.A Delsys Trigno^(TM)surface electromyography unit was used for muscle activation from the rectus abdominis,external oblique,and transverse abdominis/internal oblique muscles.RESULTS Linear mixed effects model analysis showed that cueing had a significant effect on core muscle activation(P=0.001);however,there was no significant difference between cue types(internal or external)(P=0.130).CONCLUSION Both external and internal cueing have significant effects on core muscle activation during the Sahrmann five-level core stability test and the PBU does not create higher muscle activation than internal cueing. 展开更多
关键词 External cue internal cue Muscle activation Core muscles Lumbopelvic stability Pressure biofeedback unit
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The Study-to-work Transition of Chinese International Students: Navigating a Future in the Global Labour Market
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作者 Manli Xu Meng Zhan 《教育技术与创新》 2022年第2期22-39,共18页
In the global competition for talents,the massive inflow of Chinese students into the UK has drawn great attention.However,only a few studies examine students’interactions with socioeconomic structures in their study... In the global competition for talents,the massive inflow of Chinese students into the UK has drawn great attention.However,only a few studies examine students’interactions with socioeconomic structures in their study-to-work transition.This study used Higher Education Statistics AgencyHESA,22data and interview data collected from Chinese postgraduate students,and it aims to:investigate structural factors that influence post-study migration patterns of Chinese students;and explore how Chinese students interact with wider social structures.This study found that different configurations between students"goals,""actions,"and"reflexivity"would lead to different employment outcomes.Three different study-to-work transition strategies were identified:"proceeding without a fixed plan";"reaching a compromise";and"knowing goals and approaching goals".Findings suggest that the transition between study and work is more complex than what is described in human capital and push-pull approaches.A better understanding of students’decision-making processes would help higher education institutions in preparing graduates for careers in the global labour market. 展开更多
关键词 Chinese international students study-to-work transition labour market structuration theory the united Kingdom(UK)
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United Nations International Conference on Space-based Technologies for Disaster Management Held in Beijing
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作者 Frost Tan 《Aerospace China》 2012年第4期16-16,共1页
The United Nations International Conference on Space-based Technologies for Disaster Management, "Risk Assessment in the Context of Global Climate Change", was held in Beijing during November 7-9, 2012. The ... The United Nations International Conference on Space-based Technologies for Disaster Management, "Risk Assessment in the Context of Global Climate Change", was held in Beijing during November 7-9, 2012. The conference was co-organized by the United Nations Office for Outer Space Affairs (UNOOSA) and the Ministry of Civil affairs (MCA) of the People's Republic of China, in collaboration with the Ministry of Foreign Affairs of PRC, China National Space Administration (CNSA), 展开更多
关键词 united Nations international Conference on Space-based Technologies for Disaster Management Held in Beijing
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The 2 ℃ Global Temperature Target and the Evolution of the Long-TermGoal of Addressing Climate Change-From the United Nations FrameworkConvention on Climate Change to the Paris Agreement 被引量:22
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作者 Yun Gao Xiang Gao Xiaohua Zhang 《Engineering》 SCIE EI 2017年第2期272-278,共7页
The Paris Agreement proposed to keep the increase in global average temperature to well below 2 ℃ abovepre-industrial levels and to pursue efforts to limit the temperature increase to 1.5 ℃ above pre-industriallevel... The Paris Agreement proposed to keep the increase in global average temperature to well below 2 ℃ abovepre-industrial levels and to pursue efforts to limit the temperature increase to 1.5 ℃ above pre-industriallevels. It was thus the first international treaty to endow the 2 ℃ global temperature target with legal effect.The qualitative expression of the ultimate objective in Article 2 of the United Nations Framework Conventionon Climate Change (UNFCCC) has now evolved into the numerical temperature rise target in Article 2 of theParis Agreement. Starting with the Second Assessment Report (SAR) of the Intergovernmental Panel on Cli-mate Change (IPCC), an important task for subsequent assessments has been to provide scientific informa-tion to help determine the quantified long-term goal for UNFCCC negotiation. However, due to involvementin the value judgment within the scope of non-scientific assessment, the IPCC has never scientifically af-firmed the unacceptable extent of global temperature rise. The setting of the long-term goal for addressingclimate change has been a long process, and the 2 ℃ global temperature target is the political consensuson the basis of scientific assessment. This article analyzes the evolution of the long-term global goal foraddressing climate change and its impact on scientific assessment, negotiation processes, and global low-carbon development, from aspects of the origin of the target, the series of assessments carried out by the 1PCCfocusing on Article 2 of the UNFCCC, and the promotion of the global temperature goal at the political level. 展开更多
关键词 CLIMATE CHANGE international negotiationln tergovernmental Panel on CLIMATE CHANGE unitED Nations Framework CONVENTION on CLIMATE ChangeLong-term GOAL Critical vulnerability Intuitive building
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Standard-sample bracketing calibration method combined with Mg as an internal standard for silicon isotopic compositions using multi-collector inductively coupled plasma mass spectrometry 被引量:3
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作者 Honglin Yuan Cheng Cheng +1 位作者 Kaiyun Chen Zhian Bao 《Acta Geochimica》 EI CAS CSCD 2016年第4期421-427,共7页
Silicon isotope analysis traditionally uses a standard-sample bracketing (SSB) method that relies upon greater instrument stability than can be consistently expected. The following proposed method reduces the level ... Silicon isotope analysis traditionally uses a standard-sample bracketing (SSB) method that relies upon greater instrument stability than can be consistently expected. The following proposed method reduces the level of instrumental stability required for the analysis process and provides a valid solution for high-precision and accurate studies of Si isotopic compositions. Rock samples were dissolved by using alkali fusion and acidification. Silicon isotopes were purified with an ion exchange resin. Interfering peaks for isotopes were separated by using a Nu Plasma 1700 multi-collector inductively coupled plasma mass spectrometry (MS) system in high-resolution mode (M/AM 〉 8000 RP). Two magnesium isotopes (25Mg and 26Mg) and three silicon isotopes (28Si, 29Si, and 3;Si) were analyzed in the same data collection cycle. Mg isotopes were used as an internal standard to calibrate the mass discrimination effects in MS analysis of Si isotopes in combination with the SSB method in order to reduce the effects of MS interference and instrumental mass dis- crimination on the accuracy of measurements. The conventional SSB method without the Mg internal standard and the proposed SSB method with Mg calibration delivered consistent results within two standard deviations. When Mg was used as an internal standard for calibration, the analysis precision was better than 0.05 %0 amu. 展开更多
关键词 si isotope Mg internal standard - MC-ICP- MS Rock samples High resolution
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Structure and internal stress of Au films deposited on SiO_2/Si(100) and mica by dc sputtering 被引量:1
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作者 Hong Qiu, Jingchun Sun, Yue Tian, Yan Huang, Liqing Pan, Fengping Wang, and Ping WuDepartment of Physics, Applied Science School, University of Science and Technology Beijing, Beijing 100083, China 《Journal of University of Science and Technology Beijing》 CSCD 2004年第5期415-419,共5页
Au films with a thickness of about 300 nm were deposited on SiO_2/Si(100) andmica substrates by dc sputtering. X-ray diffraction spectroscopy and field emission scanningelectron microscopy were used to analyze the str... Au films with a thickness of about 300 nm were deposited on SiO_2/Si(100) andmica substrates by dc sputtering. X-ray diffraction spectroscopy and field emission scanningelectron microscopy were used to analyze the structure and internal stress of the Au films. Thefirms grown on SiO_2/Si(100) show a preferential orientation of [111] in the growth direction.However the films grown on mica have mixture crystalline orientations of [111], [200], [220] and[311] in the growth direction and the orientations of [200] and [311] are slightly more than thoseof [111] and [220]. An internal stress in the films grown on SiO_2/Si(100) is tensile. For Au filmsgrown on mica the internal stresses in the [111]- and [311]-orientation grains are compressive whilethose in the [200]- and [220]-orientation grains are tensile. Au films grown SiO_2/Si(100) havesome very large grains with a size of about 400 nm and have a wider grain size distribution comparedwith those grown on mica. 展开更多
关键词 gold film MICA siO_2/si(100) STRUCTURE internal stress
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Abstracts from International Journal of Minerals, Metallurgy and Materials 被引量:1
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《Rare Metals》 SCIE EI CAS CSCD 2011年第6期695-695,共1页
Crystallization behavior of F-free mold fluxes ZHANG Zuotai,WEN Guanghua,and ZHANG Yingyi Abstract The time-temperature-transformation(TTT) diagrams of F-free mold fluxes were constructed using single hot thermocouple... Crystallization behavior of F-free mold fluxes ZHANG Zuotai,WEN Guanghua,and ZHANG Yingyi Abstract The time-temperature-transformation(TTT) diagrams of F-free mold fluxes were constructed using single hot thermocouple technique(SHTT) and confocal scanning laser 展开更多
关键词 si Abstracts from international Journal of Minerals Metallurgy and Materials XRD
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JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL ANNUAL CONTENTS Volume12(2005) 被引量:1
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《Journal of Iron and Steel Research International》 SCIE CAS CSCD 2005年第6期i0001-i0002,F0003,共3页
关键词 PING JOURNAL OF IRON AND STEEL RESEARCH international ANNUAL CONTENTS Volume12 si
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Cu含量对Al-1Mg-0.6Si-xCu合金板材韧性及弯曲性能的影响
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作者 欧阳瑞丁 赵磊 +7 位作者 蒋海春 唐建国 叶凌英 刘胜胆 张勇 马乐航 胡西艳 卢冯恺 《中国有色金属学报》 EI CAS CSCD 北大核心 2024年第5期1486-1494,共9页
采用室温拉伸、Kahn撕裂以及弯曲实验,结合数字图像分析法和扫描透射电镜等手段,探究了Cu含量对Al-1Mg-0.6Si-xCu合金板材韧性及弯曲性能的影响。结果表明:随着Cu含量的增加,合金的伸长率、均匀伸长率、均匀断裂能和单位面积裂纹形核功... 采用室温拉伸、Kahn撕裂以及弯曲实验,结合数字图像分析法和扫描透射电镜等手段,探究了Cu含量对Al-1Mg-0.6Si-xCu合金板材韧性及弯曲性能的影响。结果表明:随着Cu含量的增加,合金的伸长率、均匀伸长率、均匀断裂能和单位面积裂纹形核功逐渐增加,合金的弯曲性能变好,均匀阶段韧性提升,而合金的失稳伸长率、失稳断裂能及单位面积裂纹扩展功下降,合金失稳阶段韧性变差。随着Cu含量的增加,Al-1Mg-0.6Si-xCu合金中强化相β″的密度增加,且在0.5-Cu合金中出现Q′相和L相,晶内析出相密度增加,使得合金在形变过程中消耗的能量增加;晶界析出相间距增加,从而提高合金的韧性及弯曲性能。 展开更多
关键词 AL-MG-si-CU合金 CU含量 失稳伸长率 裂纹形核功 裂纹扩展功 弯曲性能
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SIS在某海外燃煤电站主保护系统的应用
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作者 金亚杰 《今日自动化》 2024年第8期150-152,共3页
在某海外大型燃煤电站项目中,为了切实提高机组主保护的可靠性,SIS在锅炉和汽轮机主保护中得以应用,其具有优异的稳定性、可靠性、良好的人机接口及其与DCS的兼容性,为同类型机组主保护配置选型或升级改造提供了新的选择。
关键词 安全仪表系统(siS) 大型燃煤电站主机保护 应用研究
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INTERNATIONAL SYSTEM OF UNITS(SI)
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作者 K.A.Olive K.Agashe +208 位作者 C.Amsler M.Antonelli J.-F.Arguin D.M.Asner H.Baer H.R.Band R.M.Barnett T.Basaglia C.W.Bauer J.J.Beatty V.I.Belousov J.Beringer G.Bernardi S.Bethke H.Bichsel O.Biebe E.Blucher S.Blusk G.Brooijmans O.Buchmueller V.Burkert M.A.Bychkov R.N.Cahn M.Carena A.Ceccucci A.Cerr D.Chakraborty M.-C.Chen R.S.Chivukula K.Copic G.Cowan O.Dahl G.D'Ambrosio T.Damour D.de Florian A.de Gouvea T.DeGrand P.de Jong G.Dissertor B.A.Dobrescu M.Doser M.Drees H.K.Dreiner D.A.Edwards S.Eidelman J.Erler V.V.Ezhela W.Fetscher B.D.Fields B.Foster A.Freitas T.K.Gaisser H.Gallagher L.Garren H.-J.Gerber G.Gerbier T.Gershon T.Gherghetta S.Golwala M.Goodman C.Grab A.V.Gritsan C.Grojean D.E.Groom M.Grnewald A.Gurtu T.Gutsche H.E.Haber K.Hagiwara C.Hanhart S.Hashimoto Y.Hayato K.G.Hayes M.Heffner B.Heltsley J.J.Hernandez-Rey K.Hikasa A.Hocker J.Holder A.Holtkamp J.Huston J.D.Jackson K.F.Johnson T.Junk M.Kado D.Karlen U.F.Katz S.R.Klein E.Klempt R.V.Kowalewski F.Krauss M.Kreps B.Krusche Yu.V.Kuyanov Y.Kwon O.Lahav J.Laiho P.Langacker A.Liddle Z.Ligeti C.-J.Lin T.M.Liss L.Littenberg K.S.Lugovsky S.B.Lugovsky F.Maltoni T.Mannel A.V.Manohar W.J.Marciano A.D.Martin A.Masoni J.Matthews D.Milstead P.Molaro K.Monig F.Moortgat M.J.Mortonson H.Murayama K.Nakamura M.Narain P.Nason S.Navas M.Neubert P.Nevski Y.Nir L.Pape J.Parsons C.Patrignani J.A.Peacock M.Pennington S.T.Petcov Kavli IPMU A.Piepke A.Pomarol A.Quadt S.Raby J.Rademacker G.Raffel B.N.Ratcliff P.Richardson A.Ringwald S.Roesler S.Rolli A.Romaniouk L.J.Rosenberg J L.Rosner G.Rybka C.T.Sachrajda Y.Sakai G.P.Salam S.Sarkar F.Sauli O.Schneider K.Scholberg D.Scott V.Sharma S.R.Sharpe M.Silari T.Sjostrand P.Skands J.G.Smith G.F.Smoot S.Spanier H.Spieler C.Spiering A.Stahl T.Stanev S.L.Stone T.Sumiyoshi M.J.Syphers F.Takahashi M.Tanabashi J.Terning L.Tiator M.Titov N.P.Tkachenko N.A.Tornqvist D.Tovey G.Valencia G.Venanzoni M.G.Vincter P.Vogel A.Vogt S.P.Wakely W.Walkowiak C.W.Walter D.R.Ward G.Weiglein D.H.Weinberg E.J.Weinberg M.White L.R.Wiencke C.G.Wohl L.Wolfenstein J.Womersley C.L.Woody R.L.Workman A.Yamamoto W.-M.Yao G.P.Zeller O.V.Zenin J.Zhang R.-Y.Zhu F.Zimmermann P.A.Zyla G.Harper V.S.Lugovsky P.Schaffner 《Chinese Physics C》 SCIE CAS CSCD 2014年第9期112-112,共1页
See "The International System of Units (SI)," NIST Special Publication 330, B.N. Taylor, ed. (USGPO, Washington, DC, 1991); and "Guide for the Use of the International System of Units (SI)," NIST Special Pub... See "The International System of Units (SI)," NIST Special Publication 330, B.N. Taylor, ed. (USGPO, Washington, DC, 1991); and "Guide for the Use of the International System of Units (SI)," NIST Special Publication 811, 1995 edition, B.N. Taylor (USGPO, Washington, DC, 1995). 展开更多
关键词 si NIST international SYSTEM OF units
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国际单位制(SI)的新变化 被引量:2
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作者 李寿星 刘云霞 雷霄飞 《长江大学学报(自科版)(中旬)》 CAS 2008年第4期118-120,234,共3页
在新版的《国际单位制(SI)》中,SI单位的含义发生了重大变化,取消了"辅助单位"这一分类类别,此外新增一个具有专门名称的一贯SI导出单位katal。基于上述变化,我国法定计量单位的构成体系也发生了相应变化。
关键词 国际单位制(si) si单位 辅助单位 新变化
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薄膜a-Si PIN/OLED图像传感显示器的设计与模拟 被引量:3
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作者 杨恢东 侯信 +4 位作者 吴春亚 熊绍珍 郝云 陈有素 郭斌 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2002年第8期846-851,共6页
设计了一种将薄膜 a- Si PIN光敏传感单元与 OL ED有机发光显示单元合二为一的新型图像传感显示器件 ;通过对每个单元的分别建模以及叠层器件的串联结构特点 ,对器件单元像素的电流电压特性进行了模拟 .结果表明 :器件驱动电压的降低主... 设计了一种将薄膜 a- Si PIN光敏传感单元与 OL ED有机发光显示单元合二为一的新型图像传感显示器件 ;通过对每个单元的分别建模以及叠层器件的串联结构特点 ,对器件单元像素的电流电压特性进行了模拟 .结果表明 :器件驱动电压的降低主要通过增大 OL ED的幂指数因子实现 ;薄膜 a- Si PIN的灵敏度对器件灵敏度有决定性的影响 ;降低 a- Si PIN隙态密度能有效地展宽器件的线性响应区域 ;器件应用领域的不同 ,对 a- Si PIN的并联等效电阻的大小有不同的要求 . 展开更多
关键词 薄膜 图像传感显示器 有机发光二极管 非晶硅 PIN传感单元 电流耦合 光-光转换
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铁含量对Al-Si-Fe合金微观组织及内耗性能的影响 被引量:7
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作者 罗兵辉 谢佑卿 《中国有色金属学报》 EI CAS CSCD 北大核心 2001年第1期51-54,共4页
采用快速冷凝粉末包套挤压工艺制备了含铁量分别为 1.2 %和 3.5 %的Al 11%Si Fe合金。研究了这两合金在挤压和退火状态下的微观组织特征和内耗行为 ,解释了Fe含量及其析出相、热处理状态等对内耗的影响 ,提出了该合金系在 6 0~ 2 5 0... 采用快速冷凝粉末包套挤压工艺制备了含铁量分别为 1.2 %和 3.5 %的Al 11%Si Fe合金。研究了这两合金在挤压和退火状态下的微观组织特征和内耗行为 ,解释了Fe含量及其析出相、热处理状态等对内耗的影响 ,提出了该合金系在 6 0~ 2 5 0℃温度范围产生内耗峰的机制。 展开更多
关键词 快速凝固 微观组织 内耗 AL-si-FE合金 铁含量
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Fe—30Mn—6Si合金(SMA)形状恢复过程的内耗和电阻分析 被引量:2
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作者 马如璋 赵钟涛 +3 位作者 苏炜 刘冠威 马长英 杨士伟 《材料研究学报》 EI CAS CSCD 1994年第2期128-133,共6页
用内耗、电阻、长度变化方法研究了Fe—Mn—Si合金的形状恢复现象.用x射线衍射作了相的定性分析电阻变化较灵敏地反映ε相数量的变化;内耗能反应形状变化的温度区间和速度;长度变化则直接反映形状恢复情况.实验表明:ε→γ... 用内耗、电阻、长度变化方法研究了Fe—Mn—Si合金的形状恢复现象.用x射线衍射作了相的定性分析电阻变化较灵敏地反映ε相数量的变化;内耗能反应形状变化的温度区间和速度;长度变化则直接反映形状恢复情况.实验表明:ε→γ转变有跃变性质,并在远大于A(s2)至A(f2)的温度区间内进行热诱发的。相变对形状恢复有贡献.但形变诱发马氏体的逆相变的贡献是主要的ε→γ相变引起电阻增加。 展开更多
关键词 内耗 电阻率 形状记忆合金 铁锰硅
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kat是酶活性的SI单位 被引量:2
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作者 何扬举 董邦权 潘伯荣 《编辑学报》 CSSCI 北大核心 2004年第1期30-30,共1页
关键词 医学 计量单位 酶活性 si kat
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Fe-Mn-Si-Cr 合金中 γ→ε 马氏体相变及其逆相变的内耗特征 被引量:4
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作者 吴晓春 张骥华 徐祖耀 《上海交通大学学报》 EI CAS CSCD 北大核心 1998年第2期1-4,9,共5页
用静电音频内耗仪测试了Fe-Mn-Si-Cr形状记忆合金在-100~300°C温度范围的内耗及模量变化,研究了γ→ε马氏体相变及其逆相变的内耗特征.结果表明,γ→ε马氏体相变及其逆相变具有不同的机制;在相变过程中... 用静电音频内耗仪测试了Fe-Mn-Si-Cr形状记忆合金在-100~300°C温度范围的内耗及模量变化,研究了γ→ε马氏体相变及其逆相变的内耗特征.结果表明,γ→ε马氏体相变及其逆相变具有不同的机制;在相变过程中未出现软模现象,可见该合金的层错形核可能无需点阵软化.相变过程中的模量变化归因于ε相的模量高于γ相的模量. 展开更多
关键词 马氏体相变 内耗 形状记忆合金
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CAT、POD和APX 3种酶活力SI单位的换算 被引量:2
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作者 刘昌来 田亚玲 +2 位作者 王国栋 郑琰燚 李燕文 《农业图书情报学刊》 2015年第8期160-163,共4页
目前CAT、POD和APX等氧化还原反应酶类的酶活单位在中文期刊中存在着极大的差别,并且在很多期刊中,这3种酶所使用的单位也不是国际单位制(SI)单位,为了进一步推广SI单位的使用,从springer数据库中下载了发表于2013年—2014年含有这3种酶... 目前CAT、POD和APX等氧化还原反应酶类的酶活单位在中文期刊中存在着极大的差别,并且在很多期刊中,这3种酶所使用的单位也不是国际单位制(SI)单位,为了进一步推广SI单位的使用,从springer数据库中下载了发表于2013年—2014年含有这3种酶的45篇文章,CAT、POD和APX的活性单位可以分别通过3个公式将原来使用U作为酶活单位的方式换算为以kat作为其活性单位的表示,其中CAT通过H2O2在240 nm下的43.6 L/(mol·cm)摩尔吸收系数转换为SI单位(以kat表示),POD的可以通过470 nm下愈创木酚氧化产物的26.6 L/(mmol·cm)摩尔吸收系数由U表示的单位换算为以kat的SI单位,APX的活性单位可以通过反应物抗坏血酸在290 nm下的2.8 L/(mmol·cm)换算为SI单位。 展开更多
关键词 过氧化氢酶 过氧化物酶 抗坏血酸过氧化物酶 si单位 摩尔吸收系数
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