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| 1 | Subcycle control of terahertz waveform polarization using all-optically induced transient metamaterials显示文摘Coherent radiation with frequencies ranging from 0.3 to 30 THz has recently become accessible using femtosecond laser technology.These terahertz(THz)waves have already been applied in spectroscopy and imaging and can be manipulated using static optical elements such as lenses,polarizers and filters.However,ultrafast modulation of THz radiation is required as well,for instance,in short-range wireless communication or for preparing shaped THz transients for the coherent control of numerous material excitations.Here,we demonstrate an all-optically created transient metamaterial that allows us to manipulate the polarization of THz waveforms with subcycle switch-on times.The polarization-modulated pulses are potentially interesting for controlling elementary motions such as the vibration of crystal lattices,the rotation of molecules and the precession of spins. | N Kamaraju Andrea Rubano Linke Jian Surajit Saha T Venkatesan Jan Notzold R Kramer Campen Martin Wolf Tobias Kampfrath | 2014 | Light(Science & Applications)2014，3，1： | 5 |
| 2 | Fondaparinux预防老年急性内科患者发生静脉血栓形成的效果与安全性:随机安慰剂对照研究显示文摘目的:观察 Fondaparinux 对具有中高度静脉血栓发生危险的老年急性内科住院患者的抗凝效果与安全性。设计:双盲随机安慰剂对照研究。背景:8个国家的35个中心。参与者:849例≥60岁内科患者,住院原因分别为充血性心力衰竭、慢性肺病合并急性呼吸系统疾患、急性炎症性或感染性疾病,预期至少住院4天以上。干预:2.5 mg Fondaparinux 或安慰剂,每天1次皮下注射,持续6~14天。观察指标:主要指标为静脉血栓形成(治疗后15天内采用双侧静脉造影检查)及有症状的静脉血栓;次要指标为死亡与出血。患者随访时间为1个月。结果:Fondaparinux 治疗组425例患者和安慰剂组414例患者接受了安全性分析(10例未治疗)。644例患者(75.9%)可接受主要指标分析。静脉血栓检出率在 Fondaparinux 治疗组为5.6%(18/321),安慰剂组为10.5%(34/323),相对危险减少46.7%(95% CI 7.7%~69.3%)。安慰剂组5例患者发生有症状的静脉血栓,Fondaparinux治疗组无患者发生有症状的静脉血栓(P=0.029)。两组均有1例(0.2%)患者发生严重出血。随访结束时,安慰剂组、Fondaparinux 治疗组分别死亡25(6.0%)、14(3.3%)例患者。结论:Fondaparinux 可有效预防急性内科老年患者无症状性及有症状的静脉血栓。严重出血几率两组相似。 | Alexander T Cohen Bruce L Davidson Alexander S Gallus Michael R Lassen Martin H Prins Witold Tomkowski Alexander G G Turpie Jan F M Egberts Anthonie W A Lensing 石汉平(译) 王深明(校) | 2006 | 英国医学杂志中文版2006，9，5： | 3 |
| 3 | Environm-ental applications of semiconductor photocatalysis显示文摘 | Hoffmann M R Martin S T Choi W | 1995 | Chem Rev1995，95，1： | 2 |
| 4 | Reverse engineering of geometric models-An introduction 显示文摘 | Varady T Martin R R Cox J | 1997 | Computer-Aided Design1997，29，4： | 1 |
| 5 | Phosphorus diagenesis in lake sediments:investigation using fractionation techniques显示文摘 | Michael R P Martin T A Eric L V | 1995 | Mar Freshwater Res1995，46，： | 1 |
| 6 | Environmental application of semiconductor photo-catalysis显示文摘 | HOFFMANNM R MARTIN S T CHOI W Y | 1995 | J Chem Rev1995，95，1： | 1 |
| 7 | A comparison of methods used to determine bi mass on naturalized swards显示文摘 | MARTIN R C ASTATKIE T COOPER J M | 2005 | Journal of Agronomy and Crop Science2005，191，2： | 1 |
| 8 | The ecology of the European rabbit (Oyctolagus cuniculus) in coastal southwestern Australia显示文摘 | Twigg L E Lowe T J Martin G R | 1998 | Wildl Res1998，25，： | 1 |
| 9 | Environmental applications of semiconductor photocatalysis显示文摘 | HOFFMAN M R MARTIN S T CHOI W | 1995 | Chemical Reviews1995，95，1： | 1 |
| 10 | Reverse engineering of geometric models-an introduction 显示文摘 | Varady T Martin R R Cox J | 1997 | Computer-Aided Design1997，29，4： | 1 |
| 11 | Environmental applica- tions of semiconductor photocatalysis 显示文摘 | Hoffmann M R Martin S T Choi W | 1995 | Chemical Reviews1995，95，1： | 1 |
| 12 | Modellingof Non-Thermal Plasma Aftertreatment of Exhaust GasStreams显示文摘 | Martin A R Shawcross J T Whitehead J C | 2004 | J Phy D:Appl Phys2004，37，： | 1 |
| 13 | Reverse engineering of geometric modelsan introduction显示文摘 | VARADY T MARTIN R R COX J | 1997 | Comput Aidded Design1997，29，4： | 1 |
| 14 | Environmental applications of semiconductor photocatalysis显示文摘 | Hoffman M R Martin S T Choi W | 1995 | Chem Rev1995，95，1： | 1 |
| 15 | Environmental applications of semiconductor photocatalysis 显示文摘 | Hoffman M R Martin S T Choi W | 1995 | Chem Rev1995，95，1： | 1 |
| 16 | Environmental application of semiconductor photocatalysis显示文摘 | Hoffman M R Martin S T Choi W | 1995 | Chemical Reviews1995，95，： | 1 |
| 17 | The evolution of modem plate osteosynthesis显示文摘 | MICLAU T MARTIN R E | 1997 | Injury1997，，： | 1 |
| 18 | Chemical Reviews显示文摘 | Hoffmann M R Martin S T Choi W | 1995 | 95(1):691995，95，1： | 1 |
| 19 | Defensins and other endogenous peptide of vertebrates显示文摘 | Martin E Ganz T Lehrer R I | 1995 | Journal of Leukocyte Biology1995，58，： | 1 |
| 20 | Envirmental applications of semiconductor photocatalysis显示文摘 | Hollmann M R Martin S T Choi W | 1995 | Chem Rev1995，95，： | 1 |
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