检索结果-南通市图书馆

Synthesis and Characterization of ZnO Nanowires

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

合成化学 2004年第Z1期12卷 10-10页

作者： Huang Michael Hsuan-Yi Mao Samue Henning Feick Yan Haoquan Wu Yiying Hennes Kind Richard Russo Eicke weber Yang Peidong Department of Chemistry University of California Environmental Energy Technology Division Materials Science Division Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA Department of Chemistry National Ting Hua UniversityHsinchuTaiwan

Zinc oxide is a wide bandgap (3.37 eV) semiconductor with a hexagonal wurtzite crystal structure. ZnO prepared in nanowire form may be used as a nanosized ultraviolet light-emitting source. In this study, ZnO nanowires were prepared by vapor-phase transport of Zn vapor onto gold-coated silicon substrates in a tube furnace heated to 900 C. Gold serves as a catalyst to capture Zn vapor during nanowire *** control of ZnO nanowires has been achieved by varying the gold film thickness, using fine gold clusters, or tuning other growth conditions. Nanowire diameters ranging from 20 - 200 nm and lengths between 2 - 40 μm can be made. Structural characterization of the nanowires was mainly performed using powder X-ray diffractometry, scanning and transmission electron microscopy. Orientational control of ZnO nanowires can be achieved by growing the nanowires on sapphire substrates. Nearly perfect lattice match between the (002) c-axis growth of ZnO nanowires and the (110) a-plane surface of sapphire substrate allows vertical growth of ZnO nanowires. Fabrication of patterned ZnO nanowire array was then made by patterning the gold layer on the sapphire *** characterization of the ZnO nanowires using a He-Cd laser (325 nm) shows that the nanowires possess a strong emission band around 375 - 380 nm. Room temperature power-dependent photoluminescence study using a Nd:YAG laser (266 nm, 3-ns pulse width) shows that the nanowires exhibit lasing emission property. This is the first nanowire system displaying such phenomenon.

关键词： nanowires, zinc oxide

维普期刊数据库

育成猪感染猪肉孢子虫后获得性免疫持续期的研究

在线全文

学校读者我要写书评

暂无评论

青海畜牧兽医杂志 1985年第4期 65-65页

作者： M.weber,H. Weyretr 乐牧

16头8周龄猪用10~3猪肉孢子虫孢子囊作亚临床感染免疫,另以不免疫的8头猪作对照。上述猪分为4组(每组免疫猪4头加入对照猪2头),在免疫后的第40,80,120和160天,分别以3×10~6猪肉孢子虫孢子囊感染攻毒,以观测抗急性猪肉孢子虫感染的保护... 详细信息

16头8周龄猪用10~3猪肉孢子虫孢子囊作亚临床感染免疫,另以不免疫的8头猪作对照。上述猪分为4组(每组免疫猪4头加入对照猪2头),在免疫后的第40,80,120和160天,分别以3×10~6猪肉孢子虫孢子囊感染攻毒,以观测抗急性猪肉孢子虫感染的保护免疫持续期。试验结果:免疫40天攻毒组能抵抗攻毒致死或发病,而有坚强的免疫

关键词：免疫持续期猪肉肉类攻毒免疫猪

Nat Genet:科学家设计新方法找到抑制癌症发育的新基因

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

现代生物医学进展 2017年第15期17卷 I0004-I0004页

作者： Jorge de la Rosa, Mathias Josef Friedrich, Yilong Li, Lena Rad, Hannes Ponstingl, Qi Liang, Sandra Bernaldo de Quirós, Imran Noorani, Emmanouil Metzakopian, Alexander Strong, Meng Amy Li, Gary J Hoffman, Rocío Fuente, George S Vassiliou, Roland Rad, Allan Bradley Juan Cadiñanos Jorge de la Rosa Juan Cadiñanos Jorge de la Rosa Carlos López-Otín Julia weber Roland Rad Julia weber Roland Rad Aurora Astudillo María Teresa Fernández-García María Soledad Fernández-García Gary J Hoffman Carlos López-Otín The Wellcome Trust Sanger Institute Wellcome Trust Genome Campus Hinxton UK Instituto de Medicina Oncológica y Molecular de Asturias (IMOMA) Oviedo Spain Departamento de Bioquímica y Biología Molecular Facultad de Medicina Instituto Universitario de Oncología (IUOPA) Universidad de Oviedo Oviedo Spain Department of Internal Medicine II Klinikum rechts der Isar Technische Universität München München Germany German Cancer Consortium (DKTK) German Cancer Research Center (DKFZ) Heidelberg Germany Servicio de Anatomía Patológica Hospital Universitario Central de Asturias Oviedo Spain Unidad de Histopatología Molecular Facultad de Medicina IUOPA Universidad de Oviedo Oviedo Spain School of Medicine University of Western Australia Crawley Western Australia Australia Centro de Investigación Biomédica en Red de Cáncer Spain.

英国桑格研究院的研究人员和他们的合作者们最近发现了帮助阻止前列腺癌、皮肤癌和乳腺癌发育的新基因。这些基因能够与众所周知的肿瘤抑制基因PTEN配合发挥作用，该研究还发现这些基因与人类前列腺肿瘤存在相关性。相关研究结果发表在... 详细信息

英国桑格研究院的研究人员和他们的合作者们最近发现了帮助阻止前列腺癌、皮肤癌和乳腺癌发育的新基因。这些基因能够与众所周知的肿瘤抑制基因PTEN配合发挥作用，该研究还发现这些基因与人类前列腺肿瘤存在相关性。相关研究结果发表在国际学术期刊Nature Genetics上。该研究揭示了一些参与癌症发育的新途径，这些基因有望成为治疗PTEN突变癌症的新药物靶点。这项研究开发的一些方法也可以用于发现其他协同抑制癌症生长的基因。

关键词：新基因癌症发育 Nat 科学家设计肿瘤抑制基因国际学术期刊

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

“我们并没有进入衰退周期”

中国房地产金融 2019年第2期 29-29页

作者：魏柏昂瑞银集团(UBS)

“全球经济动能仍然良好,市场总是容易在极度乐观到极度悲观之间转化,我认为市场太悲观了,目前全球经济增长动能只是适度放缓,但我们并没有进入衰退。”在第十九届瑞银大中华研讨会期间,瑞银集团(UBS)主席魏柏昂(Axel weber在接受第一... 详细信息

“全球经济动能仍然良好,市场总是容易在极度乐观到极度悲观之间转化,我认为市场太悲观了,目前全球经济增长动能只是适度放缓,但我们并没有进入衰退。”在第十九届瑞银大中华研讨会期间,瑞银集团(UBS)主席魏柏昂(Axel weber在接受第一财经的独家专访时表示。

关键词：周期全球经济增长经济动能瑞银集团大中华悲观市场财经

系统评价类综述与普通综述:标准及复杂性探究

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中华耳鼻咽喉头颈外科杂志 2021年第7期56卷 687-690页

作者： Robert T.Sataloff Matthew L.Bush Rakesh Chandra Douglas Chepeha Brian Rotenberg Edward W.Fisher David Goldenberg Ehab Y.Hanna Joseph E.Kerschner Dennis H.Kraus John H.Krouse Daqing Li Michael Link Lawrence R.Lustig Samuel H.Selesnick Raj Sindwani Richard J.Smith James R.Tysome Peter C.weber D.Bradley Welling 张心浩(译) 刘争(译) Department of Otolaryngology-Head and Neck Surgery Drexel University College of MedicinePhiladelphiaPennsylvaniaUSA Department of Otolaryngology University of KentuckyLexingtonKentuckyUSA Department of Otolaryngology Vanderbilt University Medical CenterNashvilleTennesseeUSA Faculty of Medicine Department of Otolaryngology-Head and Neck SurgeryUniversity of TorontoTorontoOntarioCanada Department of Otolaryngology-Head and Neck Surgery Western UniversityTorontoOntarioCanada Department of Otolaryngology Cambridge University PressCambridgeUK Department of Otolaryngology-Head and Neck Surgery Pennsylvania State University College of MedicineHersheyPennsylvaniaUSA Department of Head and Neck Surgery The University of Texas M D.Anderson Cancer CenterHoustonTexasUSA Department:of Otolaryngology Medical College of WisconsinMilwaukeeWisconsinUSA Department of Otolaryngology-Head and Neck Surgery Northwell HealthNew YorkNew YorkUSA Department of Otolaryngology University of Texas Rio Grande Valley School of MedicineBrownsvilleTexasUSA Department of Otorhinolaryngology-Head and Neck Surgery Hospital of the University of PennsylvaniaPhiladelphiaPennsylvaniaUSA Department:of Radiation Oncology Mayo CinicRochesterMinnesotaUSA Department of Otolaryngology Columbia University Medical CenterNew YorkNew YorkUSA Department of Otolaryngology Weill Cornell Medical College of Cornell UniversityNew YorkNew YorkUSA Cleveland Clinic Head and Neck InstituteClevelandOhioUSA Department of Otolaryngology-Head and Neck Surgery The University of Iowa Hospitals and ClinicsIowa CityIowaUSA Department of Otolaryngology Cambridge University Hospitals NHS Foundation TrustCambridgeUK Mount Sinai Health System New YorkNew YorkUSA Department of Otolaryngology-Head and Neck Surgery Harvard UniversityCambridgeMassachusettsUSA 华中科技大学同济医学院附属同济医院耳鼻咽喉头颈外科

本文是由Robert ***,Ehab ***,李大庆教授等20余位耳鼻咽喉头颈外科领域知名期刊主编共同撰写的一篇针对系统评价等不同类型综述文章标准及复杂性分析的述评类文章。该文章将于2021年7月在包括《世界耳鼻咽喉头颈外科杂志(英文)》,Journ... 详细信息

本文是由Robert ***,Ehab ***,李大庆教授等20余位耳鼻咽喉头颈外科领域知名期刊主编共同撰写的一篇针对系统评价等不同类型综述文章标准及复杂性分析的述评类文章。该文章将于2021年7月在包括《世界耳鼻咽喉头颈外科杂志(英文)》,Journal of Voice,Head&Neck,American Journal of Rhinology&Allergy,The Laryngoscope等20余本国际知名耳鼻咽喉头颈外科期刊同时以英文版本刊出,为了便于中国读者对该内容进行深入了解,在获得相应授权后,本刊特别邀请刘争教授团队对该文章进行翻译,同期在本刊以中文版本刊登。希望本文对广大读者在撰写综述类文章时有所裨益。

关键词：耳鼻咽喉头颈外科中文版本复杂性分析期刊主编英文版本李大庆综述类文章评价类

维普期刊数据库

基于MRI和以3D头影测量为基础的CBCT比较：颅颌面部影像的非辐射诊断时代的开始？

在线全文

学校读者我要写书评

暂无评论

国际医学放射学杂志 2020年第3期 368-368页

作者： A.Juerchott C.Freudlsperger D.weber J.M.E.Jende M.A.Saleem S.Zingler 陈家英 Department of Neuroradiology Heidelberg University Hospital

摘要目的评估MRI在3D头影测量分析中可否作为"金标准"锥束CT(CBCT)的替代诊断工具。方法本项前瞻性可行性研究中,12例病人[男8例,女4例;平均年龄(26.1±

关键词：

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

气道壁能谱CT单能虚拟对比增强的定量研究

国际医学放射学杂志 2023年第5期 626-626页

作者： A.L.Bodenberger P.Konietzke O.Weinheimer W.L.Wagner W.Stiller T.F.weber 苗彦

摘要目的定量CT对于气道疾病表型分析的作用愈加重要。增强CT可量化评估肺实质和气道炎症，但其多期增强研究受限。利用能谱CT单能增强扫描进行肺实质和气道壁

关键词：

Time evolution of stimulated Raman scattering and two-plasmon decay at laser intensities relevant for shock ignition in a hot plasma

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2019年第3期7卷 142-155页

作者： G.Cristoforetti L.Antonelli D.Mancelli S.Atzeni F.Baffigi F.Barbato D.Batani G.Boutoux F.D'Amato J.Dostal R.Dudzak E.Filippov Y.J.Gu L.Juha O.Klimo M.Krus S.Malko A.S.Martynenko Ph.Nicolai V.Ospina S.Pikuz O.Renner J.Santos V.T.Tikhonchuk J.Trela S.Viciani L.Volpe S.weber L.A.Gizzi National Institute of Optics CNRPisa and FlorenceItaly York Plasma Physics Institute University of YorkHe slingtonYorkUK Universite de Bordeaux CNRSCEACELIATalenceFrance Donostia International Physics Center(DiPC) Donostia/San SebastianBasque CountrySpain Dipartimento SBAI Universita di Roma La SapienzaRomaItaly National Research Nuclear University MEPhl MoscowRussia CEA DAMDIFArpajonFrance Department of Radiation and Chemical Physics Institute of Physics of the CASPragueCzech Republic Laser Plasma Department Institute of Plasma Physics of the CASPragueCzech Republic Joint Institute for High Temperature RAS MoscowRussia ELI-Beamlines Institute of Physics of the CASPragueCzech Republic FNSPE Czech Technical University in PraguePragueCzech Republic Universidad de Salamanca Ctr Laseres PulsadosSalamancaSpain Centro de Laseres Pulsados(CLPU) VillamayorSalamancaSpain

Laser–plasma interaction(LPI)at intensities 1015–1016 W·cm^-2 is dominated by parametric instabilities which can be responsible for a significant amount of non-collisional absorption and generate large fluxes of high-energy nonthermal *** a regime is of paramount importance for inertial confinement fusion(ICF)and in particular for the shock ignition *** this paper we report on an experiment carried out at the Prague Asterix Laser System(PALS)facility to investigate the extent and time history of stimulated Raman scattering(SRS)and two-plasmon decay(TPD)instabilities,driven by the interaction of an infrared laser pulse at an intensity^1.2×1016 W·cm^-2 with a^100μm scalelength plasma produced from irradiation of a flat plastic *** laser pulse duration(300 ps)and the high value of plasma temperature(~4 ke V)expected from hydrodynamic simulations make these results interesting for a deeper understanding of LPI in shock ignition *** results show that absolute TPD/SRS,driven at a quarter of the critical density,and convective SRS,driven at lower plasma densities,are well separated in time,with absolute instabilities driven at early times of interaction and convective backward SRS emerging at the laser peak and persisting all over the tail of the ***-scattering SRS,driven at low plasma densities,is also clearly *** results are compared to fully kinetic large-scale,two-dimensional ***-in-cell results,beyond reproducing the framework delineated by the experimental measurements,reveal the importance of filamentation instability in ruling the onset of SRS and stimulated Brillouin scattering instabilities and confirm the crucial role of collisionless absorption in the LPI energy balance.

关键词： plasma simulations shock ignition stimulated Raman scattering two-plasmon decay

维普期刊数据库

对定位于与以前未描述过的玻璃体视网膜营养障碍相关的22q13（Fibulin-1）候选基因的野生基因组纯合子的作图和分子分析

在线全文

学校读者我要写书评

暂无评论

美国医学会眼科杂志（中文版） 2004年第2期16卷 125-125页

作者： MaikeWeigell-weber Gian-MarcoSarra DieterKotzot LodewijkSandkuijl ElmarMessmer MartinHergersberg 齐越