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| 1 | OPTICAL PROPERTIES OF GeO_2 AND Ge NANOCRYSTALS显示文摘he co m pound m aterial of n m size particles Ge O2 Si O2 w as synthesied through hydrolysis of Si( O C2 H4) and Ge Cl4 . A heat treatm ent w as carried out for the sa m ples at 100 ~1200 ℃in air . Its optical property w as deter mined by U V Vis spectur m . We have found that theabsorption edge of spectru m shifted progressively to longer w avelengths . The quantu m size ef fect of nanocrystals appears because crystals gro w and energy of optical band gap reduces d ueto the influence of te m perature . By the analysis of X ray diffraction w e have observed theprocess in w hich the structure of particles changed fro m disorder into order . | Y.H.Zhou 1) ,Y.Y.Feng 2) and H.Y.Lu 2) 1)Department of Physics Nanjing Normal University, Nanjing 210097,China 2)Physics and Ch寁O P T I C A L P R O P E R T I E S O F Ge O2 A N D Ge N A N O C R Y S T A L S Y. H. Zhou1) , Y. Y. Feng2) | 1999 | Acta Metallurgica Sinica(English Letters)1999,12,5: | 22 |
| 2 | 美国国立老化研究所与阿尔茨海默病协会诊断指南写作组:阿尔茨海默病临床前阶段的定义显示文摘阿尔茨海默病(AD)的病理生理过程在痴呆诊断的多年前就开始了。这一长期的AD“临床前”阶段是治疗干预的关键机会,但需进一步阐明AD的病理级联过程和临床症状出现之间的联系。美国国立老化研究所和AD协会召集了一个国际工作组对AD生物标志物、流行病学和神经心理学的证据进行综述并提出建议,以确定能够预测由“正常”认知到轻度认知功能障碍(MCI)及AD痴呆的最佳预测指标。根据目前已有的主要科学证据,我们提出了一个概念性的框架和用于操作的研究标准,以通过纵向临床研究来验证和改进这些模型。这些建议仅用于研究目的,目前不涉及临床应用。我们希望这些建议能提供一个共识,以推进临床前AD的研究,最终推动更早期治疗干预的进展,使得一些疾病减缓药物的疗效发挥最大。 | Sperling RA Aisen PS Beckett LA Bennett DA Craft S Fagan AM Iwatsubo T Jack CR Jr Kaye J Montine TJ Park DC Reiman EM Rowe CC Siemers E Stern Y Yaffe K Carrillo MC Thies B Morrison-Bogorad M Wagster MV Phelps CH 贾建平(译) 郭起浩(译) 黄丽(译) 陆璐(译) 张逸驰(译) 邢怡(译) | 2012 | 中华神经科杂志2012,45,5: | 22 |
| 3 | Radiation exposure and reduction in the operating room: Perspectives and future directions in spine surgery显示文摘Intraoperative imaging is vital for accurate placement of instrumentation in spine surgery. However, the use of biplanar fluoroscopy and other intraoperative imaging modalities is associated with the risk of significant radiation exposure in the patient, surgeon, and surgical staff. Radiation exposure in the form of ionizing radiation can lead to cellular damage via the induction of DNA lesions and the production of reactive oxygen species. These effects often result in cell death or genomic instability, leading to various radiation-associated pathologies including an increased risk of malignancy. In attempts to reduce radiation-associated health risks, radiation safety has become an important topic in the medical field. All practitioners, regardless of practice setting, can practice radiation safety techniques including shielding and distance to reduce radiation exposure. Additionally, optimization of fluoroscopic settings and techniques can be used as an effective method of radiation dose reduction. New imaging modalities and spinal navigation systems have also been developed in an effort to replace conventional fluoroscopy and reduce radiation doses. These modalities include Isocentric Three-Dimensional C-Arms, O-Arms, and intraoperative magnetic resonance imaging. While this influx of new technology has advanced radiation safety within the field of spine surgery, more work is still required to overcome specific limitations involving increased costs and inadequate training. | Ankur S Narain Fady Y Hijji Kelly H Yom Krishna T Kudaravalli Brittany E Haws Kern Singh | 2017 | World Journal of Orthopedics2017,8,7: | 9 |
| 4 | 血流介导的血管舒张,硝酸甘油诱导的血管舒张,基线肱动脉直径,充血剪切应力与心血管病危险因素之间的相关性显示文摘血流介导的血管舒张功能(flow-mediated vasodilation,FMD)已被用于评估内皮功能。充血性剪切应力(hyperemic shear stress,HSS,一种FMD的刺激因素)、硝酸甘油诱导的血管舒张(nitroglycerine-induced vasodilation,NID,非内皮依赖性血管舒张指数)以及基线肱动脉直径(brachial artery diameter,BAD)也参与血管舒张反应。 | 刘青 叶鹏 Maruhashi T Iwamoto Y Kajikawa M Oda N Kishimoto S Matsui S Hashimoto H Aibara Y Yusoff FM Hidaka T Kihara Y Chayama K Noma K Nakashima A Goto C Hida E Higashi Y | 2018 | 中华高血压杂志2018,26,1: | 5 |
| 5 | 肠道微生态失调与高血压的关系显示文摘新出现的证据表明,肠道菌群是维持生理动态平衡的关键,该研究旨在验证微生态失衡的肠道菌群与高血压相关这一假设,因为遗传、环境和膳食因素对肠道菌群和血压有很大影响。方法:从2种高血压模型大鼠和一个小队列患者人群的粪便样本中提取细菌DNA,用于细菌基因组的分析. | 刘莉 叶鹏 Yang T Santisteban MM Rodriguez V Li E Ahmari N Carvajal JM Zadeh M Gong M Qi Y Zubcevic J Sahay B Pepine CJ Raizada MK Mohamadzadeh M | 2015 | 中华高血压杂志2015,23,5: | 4 |
| 6 | Frequent amplification of a chr19q13.41 microRNA polycistron in aggressive primitive neuroectodermal brain tumors显示文摘 | Li M Lee KF Lu Y Clarke I Shih D Eberhart C Collins VP Van Meter T Picard D Zhou L Boutros PC Modena P Liang ML Scherer SW Bouffet E Rutka JT Pomeroy SL Lau CC Taylor MD Gajjar A Dirks PB Hawkins CE Huang A. | 2009 | 中国神经肿瘤杂志2009,7,4: | 3 |
| 7 | 掺碲硒化镓晶体的光学性能(英文)显示文摘采用水平区熔法生长了碲(Te)掺杂浓度(质量百分比)分别为0.05%,0.1%,0.5%,1%,2%的硒化镓(GaSe)晶体,并分别对掺杂浓度为0.01%,0.07%,0.38%,0.67%,2.07%的GaSe∶Te晶体的光学性能进行了表征。首次研究了GaSe∶Te晶体中刚性层声子模式的转换。吸收光谱测试结果表明:当Te掺杂浓度小于0.38%时,振动中心位于0.59 THz附近的E'(2)刚性模式吸收峰强度可达最大值,这一过程与GaSe∶Te晶体光学性能的提高密切相关。但Te掺杂浓度的进一步提高会导致E'(2)刚性模式吸收峰强度逐渐减弱,当Te掺杂浓度为1%时,E'(2)刚性模式吸收峰基本消失。这两个过程与GaSe∶Te晶体光学质量的下降密切相关。因此,E'(2)刚性模式吸收强度达到最高时对应的掺杂浓度即是GaSe∶Te晶体中Te的最佳掺杂浓度,光整流产生太赫兹过程证实了此结论的正确性。 | 古新安 朱韦臻 罗志伟 ANDREEV Y M LANSKII G V SHAIDUKO A V IZAAK T I SVETLICHNYI V A VAYTULEVICH E A ZUEV V V | 2011 | 中国光学2011,4,6: | 3 |
| 8 | 左心室舒张功能的遗传性和其他影响因素:以家庭为基础的人口研究显示文摘确定遗传因素影响舒张功能多普勒指数的程度,是评估左心室舒张功能障碍与预后关系的一个重要因素。因此,研究人员从一般人群中选出家庭样本,对其家族左心室舒张特性和舒张功能集合评分的遗传度进行评估。方法:随机抽取316个家庭样本,包括452名父母和600名后代,平均年龄分别为58.5和33.3岁, | 刘莉 叶鹏 Kloch-Badelek M Knez J Tikhonoff V Thijs L Sakiewicz W Ryabikov A Stolarz-Skrzypek K Jin Y Malyutina S Casiglia E Narkiewicz K Czarnecka D Kawecka-Jaszcz K Staessen JA Kuznetsova T | 2014 | 中华高血压杂志2014,22,10: | 2 |
| 9 | Genetic transformation of wheat mediated by Agrobacterium tumefaciens显示文摘 | Cheng M Fry J E Pang S Zhou H Hironaka C M Duncan D R Conner T W Wan Y | 1997 | Plant Physiol1997,,: | 2 |
| 10 | 青少年肥胖趋势及体质量指数与血压的相关性:健康青少年714922人的横断面研究显示文摘美国青年人中肥胖者占17%。肥胖与高血压患病率有很大关系。过去的研究样本量小,而且研究结果相互矛盾。该研究的目的是分析1998—2011年间青少年肥胖的趋势,并评估这些健康青少年的血压和体质量指数(body mass index,BMI)之间的关系。 | Chorin E Hassidim A Hartal M Havakuk O Flint N ZivBaran T Arbel Y 陈云 叶鹏 | 2016 | 中华高血压杂志2016,24,3: | 2 |
| 11 | 卒中介入治疗培训指南:国际多学会共识文件显示文摘1背景
缺血性卒中是全球人口死亡和残疾的首要原因。很多急性大血管闭塞(emergent large vesselocclusion,ELVO)患者都会遗留长期残疾。事实上,这些颅内大动脉闭塞经常会导致大面积脑损伤,进而造成患者死亡或严重致残。 | Lavine SD Cockroft K Hoh B Bambakidis N Khalessi AA Woo H Riina H Siddiqui A Hirsch JA Chong W Rice H Wenderoth J Mitchell P Coulthard A Signh TJ Phatorous C Khangure M Klurfan P ter Brugge K Iancu D Gunnarsson T Pongpech S Rodesch G Soderman M Taylor A Krings T Orbach D Picard L Suh DC Zheng HQ Jansen O Muto M Szikora I Pierot L Brouwer P Gralla J Renowden S Andersson T Fiehler J Turjman F White P Januel AC Spelle L Kulcsar Z Chapot R Biondi A Dima S Taschner C Szajner M Krajina A Sakai N Matsumaru Y Yoshknura S Ezura M Fujinaka T Iihara K Ishii A Higashi T Hirohata M Hyodo A Ito Y Kawanishi M Kiyosue H Kobayashi E Kobayashi S Kuwayama N Matsumoto Y Miyachi S Murayama Y Nagata I Nakahara I Nemoto S Niimi Y Oishi H Satomi J Satow T Sugiu K Tanaka M Terada T Yamagami H Diaz O Lylyk P Jayaraman MV Patsalides A Gandhi CD Lee SK Abruzzo T Albani B Ansari SA Arthur AS Baxter BW Bulsara KR Chen M Almandoz JE Fraser JF Heck DV Hetts SW Hussain MS Klucznik RP Leslie-Mawzi TM Mack WJ McTaggart RA Meyers PM Mocco J Prestigiacomo CA Pride GL Rasmussen PA Starke RM Sunenshine PJ Tarr RW Frei DF Pabo M Nogueira RG Zaidat OO Jovin T Linfante I Yavagal D Liebeskind D Novakovic R Pongpech S 许岩 孙瑞 郭芮兵 | 2017 | 国际脑血管病杂志2017,25,5: | 2 |
| 12 | Lithium insertion in high capacity carbonaceous materials显示文摘 | ZHENG T LIU Y FULLER E W | 1995 | J Electrochem Soc1995,142,8: | 2 |
| 13 | 胆固醇酯转移蛋白基因的蛋白质截断型变异体与冠状动脉性心脏病风险的关系显示文摘随机对照试验结果表明,抑制胆固醇酯转运蛋白(cholesteryl ester transfer protein,CETP)的疗法并不能降低冠状动脉性心脏病(coronary heart disease,CHD)的发生风险。研究失败的可能原因包括靶目标无效、靶目标外小分子的不良反应和随机对照设计因素影响等。在编码药物靶点的基因中具有天然存在的遗传变异,以此为基础,人类研究可以深入了解针对基因产物的治疗的潜在功效和安全性。 | Nomura A Won HH Khera AV Takeuchi F Ito K McCarthy S Emdin CA Klarin D Natarajan P Zekavat SM Gupta N Peloso GM Borecki IB Teslovich TM Asselta R Duga S Merlini PA Correa A Kessler T Wilson JG Bown MJ Hall AS Braund PS Carey DJ Murray MF Kirchner HL Leader JB Lavage DR Manus JN Hartze DN Samani NJ Schunkert H Marrugat J Elosua R McPherson R Farrall M Watkins H Juang JJ Hsiung CA Lin SY Wang JS Tada H Kawashiri MA Inazu A Yamagishi M Katsuya T Nakashima E Nakatochi M Yamamoto K Yokota M Momozawa Y Rotter JI Lander ES Rader DJ Danesh J Ardissino D Gabriel S Willer CJ Abecasis GR Saleheen D Kubo M Kato N Ida Chen YD Dewey FE Kathiresan S 刘莉 叶鹏 | 2017 | 中华高血压杂志2017,25,9: | 2 |
| 14 | HIF-1 alpha is essential for myeloid cell-mediated inflammation显示文摘 | Cramer T Yamanishi Y Clansen B E | 2003 | Cell2003,112,5: | 2 |
| 15 | Effects of the phase-separated melt on crystallization behavior and morphology in short chain branched metallocene polyethylenes显示文摘 | Fu Q Chiu F C McCreight K W Guo M Tseng W W Cheng S Z Keating M Y Hsieh E T and DesLauriers P J | | 0,,: | 2 |
| 16 | Grain refining mechanism of high purity Mg-9 mass % Al alloy ingot and influence of Fe or Mn addition on cast grain size 显示文摘 | Haitani T Tamura Y Yano E | 2001 | Journal of Japan Institute of Light Metals2001,51,: | 2 |
| 17 | The impact of information sharing in a two-level supply chain with multiple retailers显示文摘 | Cheng T C E Wu Y N | 2005 | Journal of the Operational Research Society2005,56,: | 1 |
| 18 | Genomic structure, chromosomal localization and expression profile of a novel melanoma differentiation associated (mda-7) gene with cancer specific growth suppressing and apoptosis inducing properties显示文摘 | Huang E Y Madireddi M T Gopalkrishnan R V | 2001 | Oncogene2001,20,: | 1 |
| 19 | Identification of stimulating and inhibitory epitopes within the heat shock protein 70 molecule that modulate cytokine production and maturation of dendritic cells显示文摘 | Wang Y Whittall T McGowan E | 2005 | J Immunol2005,174,6: | 1 |
| 20 | Regulatory CD4^+ CD25^+ T ceils in tumors from patients with early-stage non-small cell lung cancer and latestage ovarian cancer显示文摘 | Woo E Y Chu C S Goletz T J | 2001 | Cancer Res2001,61,: | 1 |