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Mechanically strengthened graphene-Cu composite with reduced thermal expansion towards interconnect applications

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Microsystems & Nanoengineering 2019年第1期5卷 481-491页

作者： Zhonglie An Jinhua Li akio kikuchi Zhuqing Wang Yonggang Jiang Takahito Ono Graduate School of Engineering Tohoku UniversityAramaki-Aza-Aoba 6-6-01Aoba-kuSendai 980-8579Japan Research Institute for Engineering and Technology Tohoku Gakuin UniversityTagajo 985-8537Japan School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191PR China Department of Mechanical Systems Engineering Tokyo University of Agriculture and TechnologyKoganei 184-8588Japan

High-density integration technologies with copper(Cu)through-silicon via(TSV)have emerged as viable alternatives for achieving the requisite integration densities for the portable electronics and micro-electro-mechanical systems(MEMSs)***,significant thermo-mechanical stresses can be introduced in integrated structures during the manufacturing process due to mismatches of thermal expansion and the mechanical properties between Cu and silicon(Si).The high-density integration demands an interconnection material with a strong mechanical strength and small thermal expansion *** this study,a novel electroplating method is developed for the synthesis of a graphene-copper(G-Cu)composite with electrochemically exfoliated *** fabrication and evaluation of the G-Cu composite microstructures,including the microcantilevers and micromirrors supported by the composite,are *** evaluated not only the micromechanical properties of the G-Cu composite based on in-situ mechanical resonant frequency measurements using a laser Doppler vibrometer but also the coefficients of thermal expansion(CTE)of the composite based on curvature radius measurements at a temperature range of 20–200℃.The Young’s modulus and shear modulus of the composite are approximately 123 and 51 GPa,which are 1.25 times greater and 1.22 times greater,respectively,than those of pure Cu due to the reinforcement of *** G-Cu composite exhibits a 23%lower CTE than Cu without sacrificing electrical *** results show that the mechanically strengthened G-Cu composite with reduced thermal expansion is an ideal and reliable interconnection material instead of Cu for complex integration structures.

关键词： composite expansion thermal

快速检测大豆籽粒中十二种异黄酮组分的HPLC方法

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中国农业科学 2009年第7期42卷 2491-2498页

作者：孙君明孙宝利韩粉霞闫淑荣杨华菊池彰夫中国农业科学院作物科学研究所/国家农作物基因资源与基因改良重大科学工程中国农业科学院环境与可持续发展研究所日本东北农业研究中心

【目的】利用高效液相色谱(HPLC)技术快速检测大豆异黄酮组分,为大豆的异黄酮标记辅助育种提供重要依据。【方法】以大豆异黄酮12种组分为标准样品,利用HPLC技术结合吸收波峰鉴定的方法进行异黄酮组分的分析。【结果】不同异黄酮苷元组... 详细信息

【目的】利用高效液相色谱(HPLC)技术快速检测大豆异黄酮组分,为大豆的异黄酮标记辅助育种提供重要依据。【方法】以大豆异黄酮12种组分为标准样品,利用HPLC技术结合吸收波峰鉴定的方法进行异黄酮组分的分析。【结果】不同异黄酮苷元组分黄豆苷元(daidzein)、大豆黄素(glycitein)和染料木素(genistein)分别具有不同的最大紫外光谱吸收波长,分别位于250、257和260nm左右。采用YMC-C18反相色谱柱,以含0.1%(v/v)乙酸13%～30%(v/v)的乙腈为流动相,在35℃柱温条件下,经梯度洗脱,结合紫外吸收检测,可以准确地定性和定量鉴定出12种不同异黄酮组分。【结论】该方法样品用量少,检测异黄酮含量准确、快速,适合大量样本分析。

关键词：大豆(Glycine max L.Merri) 异黄酮 HPLC

Balloon test occlusion of internal carotid artery: Angiographic findings predictive of results

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World Journal of Radiology 2014年第8期6卷 619-624页

作者： Kazufumi kikuchi Takashi Yoshiura akio Hiwatashi Osamu Togao Koji Yamashita Hiroshi Honda Department of Clinical Radiology Graduate School of Medical Sciences Kyushu University

AIM: To reveal angiographic findings to predict the re-sult of balloon test occlusion(BTO).METHODS: The cerebral angiograms of 42 consecu-tive patients who underwent cerebral angiography in-cluding both the Matas and Allcock maneuvers and BTO were retrospectively analyzed. Visualization of the an-terior cerebral artery(ACA) and the middle cerebral ar-tery(MCA) by the cross flow on the tested side during the Matas or Allcock maneuver was graded on a 5-point scale. Circle of Willis(COW) anatomy with respect to the presence/absence of a collateral path to reach the tested internal carotid artery(ICA) was classified intofour categories. A univariate logistic analysis was used to analyze the associations between each angiographic finding and the BTO result. Sensitivity, specificity, accu-racy, positive predictive value, and negative predictive value for each finding were calculated. RESULTS: Five patients(12%) were BTO-positive and the remaining 37 patients(88%) were BTO-negative. Visualizations of the ACA and MCA as well as the COW anatomy were significantly associated with the BTO re-sult(P = 0.0051 for ACA, P = 0.0002 for MCA, and P < 0.0001 for COW anatomy). In particular, good MCA vi-sualization and the presence of an anterior connection(collateral path to the tested ICA from the contralateral ICA via the anterior communicating artery) in the COW were highly predictive for negative BTO(negative pre-dictive value = 100% for both).

关键词： Balloon test occlusion Cross flow Circle of Willis Anterior circulation Posterior circulation

Resolution of epidural hematoma related to osteoporotic fracture after percutaneous vertebroplasty

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World Journal of Radiology 2013年第8期5卷 325-327页

作者： Hidenari Hirata akio Hiwatashi Takashi Yoshiura Osamu Togao Koji Yamashita Hironori Kamano Kazufumi kikuchi Hiroshi Honda Department of Clinical Radiology Graduate School of Medical SciencesKyushu University

We are the first to report a case that showed spontaneous resolution of epidural hematoma which was related to a steroid-induced osteoporotic compression *** patient had a painful fracture with an intravertebral cleft at L1 accompanying an epidural hematoma *** pain relief was achieved after percutaneous *** resolution of hematoma was noted three months after *** theorized that intravertebral stability after treatment might have played a role in this patient.

关键词： Vertebroplasty Osteoporosis Epidural hematoma Spinal canal compromise Intravertebral cleft

尼可地尔降低非心脏手术过程中或术后心脏事件的发生率

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首都食品与医药 2015年第24期22卷 143-143页

作者： Satoshi Kashimoto Makoto Seki Toshihiko Ishiguro Hitoshi Yoshioka Osamu Nagata Kinya Nishimura Toshihiro kikuchi Tatsuya Yamada Motoyo Iwade Akibumi Omi Osamu Honda Atsuhiro Sakamoto Yukihiko Ogihara Keiko Fujimoto Yasushi Nakaigawa Jitsu Kato akio Watanabe Minoru Nomura Junzo Takeda 王青北京四环科宝制药有限公司 100079

（接11月下）组间无显著性差异。心脏事件的频率在附表2中显示,手术过程中心脏事件的每个风险因素的优势比在附表3中显示。在通过逐步回归分析得到的风险因素中,与尼可地尔联系最紧密的因素的优势比是0.15（95%置信区间,0.03~0.76;

关键词：尼可地尔心脏事件非心脏手术优势比逐步回归分析无显著性差异置信区间心肌衰竭患者例数心肌缺血患者

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尼可地尔降低非心脏手术过程中或术后心脏事件的发生率

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首都食品与医药 2015年第22期22卷 151-151页

作者： Satoshi Kashimoto Makoto Seki Toshihiko Ishiguro Hitoshi Yoshioka Osamu Nagata Kinya Nishimura Toshihiro kikuchi Tatsuya Yamada Motoyo Iwade Akibumi Omi Osamu Honda Atsuhiro Sakamoto Yukihiko Ogihara Keiko Fujimoto Nakaigawa Jitsu Kato akio Watanabe Minoru Nomura Junzo Takeda 王青北京四环科宝制药有限公司 100079

目的评估尼可地尔是否能减少危险手术进行过程中或术后心脏事件的发生。方案多中心研究。试验点日本的13家医院。患者通过心绞痛、心肌梗死病史、心脏衰竭、糖尿病和心电图异常等风险因素来评定的中危患者。给药方案在手术过程中给予这... 详细信息

目的评估尼可地尔是否能减少危险手术进行过程中或术后心脏事件的发生。方案多中心研究。试验点日本的13家医院。患者通过心绞痛、心肌梗死病史、心脏衰竭、糖尿病和心电图异常等风险因素来评定的中危患者。给药方案在手术过程中给予这些患者尼可地尔。试验方法和主要结果术中和术后连续5天监控心脏事件,比较尼可地尔治疗组患者与非治疗组患者心脏事件的发生率。其中,尼可地尔治疗组患者84例,常规治疗组患者237例。与常规治疗相比,术中和术后给予尼可地尔治疗的患者心脏事件发生率均显著降低（术中给予尼可地尔：比值比0.15;95%置信区间,0.03～0.76;P=0.02;术后给予尼可地尔：比值比0.24;95%置信区间,0.06～0.90;P=0.04）。结论在非心脏手术术中或术后给予尼可地尔,均能降低心脏事件的发生率。

关键词：心脏手术过程尼可地尔心脏事件发生率术后试验方法置信区间多中心研究

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