检索结果-南通市图书馆

今日电子 2002年第Z1期 3-6页

作者：凌国亮肖巍 ted Johansson U.Hagstr(o)m.P.Lundin J.Engvall D.Uggla 爱立信微电子公司

提出了在单个陶瓷基底上利用硅射频Ic双极芯片技术设计PA模块的方法和测试数据.得到的数据表明利用硅技术生产出的产品性能可与现有GaAs技术产品相媲美.

关键词：成本双极双频模块陶瓷基底技术生产技术设计技术产品产品性能测试数据数据表芯片射频方法

嗜水气单胞菌外膜蛋白om.A基因的原核表达及免疫保护性研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

淡水渔业 2015年第5期45卷 3-10,28页

作者：郑宗林郑曙明 Delbert m. Gatlin Ⅲ 汪开毓水产动物繁育和健康养殖研究中心西南大学荣昌校区重庆荣昌402460 Departm.nt of Wildlife and Fisheries Sciences and Faculty of Nutrition Texas A&M University SystemCollege StationTexas 77840-2258USA 四川农业大学动物医学院成都625014

为评价嗜水气单胞菌(Aerom.nas hydrophila,Ah)PDK06株外膜蛋白A(om. A)的原核表达产物是否具有抗原性及其对斑点叉尾(Ictalurus punctatus)的免疫保护力,根据Gen Bank上嗜水气单胞菌外膜蛋白om. A基因序列(Gen Bank登录号:AF146597)设... 详细信息

为评价嗜水气单胞菌(Aerom.nas hydrophila,Ah)PDK06株外膜蛋白A(om. A)的原核表达产物是否具有抗原性及其对斑点叉尾(Ictalurus punctatus)的免疫保护力,根据Gen Bank上嗜水气单胞菌外膜蛋白om. A基因序列(Gen Bank登录号:AF146597)设计去信号肽引物,扩增获得一段约1 000 bp的序列,经鉴定正确后,构建重组表达质粒p ET-32a(+)-pom. A;然后将该质粒转入BL21(DE3)后用IPTG诱导表达,经纯化后得到pom. A重组蛋白;最后将pom. Aom. A蛋白与弗氏不完全佐剂(FIA)混合免疫斑点叉尾,评价其免疫效果。结果显示:克隆的嗜水气单胞菌pom. A基因全长为960 bp,编码319个氨基酸,融合表达的重组蛋白相对分子质量约为53,670 k Da;FIA能够提高斑点叉尾的溶菌酶活性、ACH50活性、头肾巨噬细胞呼吸暴发活性;pom. A组抗体水平在第4周达到峰值,FIA免疫组抗体水平在第5周达到峰值,且FIA能够显著提高斑点叉尾的抗体水平;攻毒后各组累计死亡率分别为93.33%(PBS)、93.33%(FIA)、50.00%(pom. A)和13.33%(FIA+pom. A),pom. A和FIA+pom. A组相对保护率分别为46.43%和85.71%;免疫组靶器官中的细菌数量显著低于对照组,且FIA+pom. A细菌含量最低。说明pom. A可以作为一个亚单位疫苗候选疫苗,而FIA佐剂能较好的增强亚单位疫苗的免疫效果。

关键词：嗜水气单胞菌(Aerom.nas hydrophila) om. A 亚单位疫苗斑点叉尾(Ictalurus punctatus) 免疫效果

Design optim.zation of a slotless Pm.brushless m.tor with helical edge wound lam.nations for rim.driven thrusters

在线全文

学校读者我要写书评

暂无评论

High Technology Letters 2010年第1期16卷 70-79页

作者： Sharkh S m.Lai S H School of Engineering Sciences University of Southampton Highfield Southampton SO17 1BJ UK Applied m.terials South East Asia Pte Ltd Changi Business Park Vista 486051 Singapore

This paper discusses the analysis and design of a very thin slotless perm.nent m.gnet （Pm. brushless m.tor whose stator lam.nations are m.nufactured from.a single strip of steel that is edge wound into a spiral （like a ＂Slinky＂） and then fitted over the windings that are preform.d on the outside surface of a non-conducting form.r. Analytical and finite elem.nt analysis （FEA） are used to determ.ne the con- strained optim.m.dim.nsions of a m.tor used to drive a rim.driven thruster in which the m.tor rotor is fit- ted onto the rim.of the propeller and the stator is encapsulated in the thin Kort nozzle of the thruster. The paper describes the fabrication of a dem.nstrator m.tor and presents experim.ntal results to validate the theoretical calculations. Experim.ntal m.tor perform.nce results are also reported and com.ared with those of a slotted m.tor that fits within the sam. active radial dim.nsions as the slotless m.tor. The slotless m.tor, which has longer active length and endwindings, and thicker m.gnets than the slotted m.tor, was found to be less efficient and m.re expensive （prototype cost） than the slotted m.chine.

关键词： slotless brushless perm.nent m.gnet (Pm. m.tor edge-wound lam.nations rim.driven thruster

Attributes of Naturally Fallen (Rained) <i>m.laleuca quinquenervia</i>Seeds in Two Habitat Types of South Florida Wetlands

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Am.rican Journal of Plant Sciences 2017年第7期8卷 1659-1671页

作者： m.n B. Rayam.jhi Paul D. Pratt Philip W. Tipping Jorge G. Leidi F. Allen Dray Jr. Paul T. m.deira ted D. Center USDA/ARS Invasive Plant Research Laboratory USA USDA/ARS/WRRC Exotic and Invasive Weeds Research Unit Albany USA

m.laleuca quinquenervia is an Australian tree that has successfully invaded m.ny habitats in Florida. It m.intains an aerial seed bank in serotinous capsular fruits held in the tree canopies. These fruits open gradually and shed seeds that fall (rain) throughout the year. Com.arative attributes (quantities and qualities) of these fallen seeds from.different habitats and tree size categories are unknown. We docum.nted these attributes of fallen m. quinquenervia seeds for 12 m.nths am.ng three tree size categories from.each of the two hydrologically delineated habitat types. Quantities (8961 seeds m.&m.ddot;m.-1) and the viability (8.8%) and germ.nability (8.4%) of fallen m.laleuca seeds in the occasionally inundated habitat were significantly higher (P = 0.05) than the quantities (6716 seeds m.&m.ddot;m.-1), and viability (5.6%) and germ.nability (5.3%) of m.laleuca seeds in the perm.nently inundated habitat. Although relatively m.re seeds rained from.larger trees, higher quality seeds were rained from.the trees of sm.ller dim.nsions. Sm.ller trees typically inhabit at the edges of m.laleuca stands and hence they m.y increase the potential for further spread of seeds into the adjacent areas.

关键词： Exotic Invasive Tree Habitat Seed Germ.nability Viability Quantity

卒中住院患者常规口服营养补充(FOOD):一项多中心随机对照试验

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（神经病学分册） 2005年第8期1卷 1-2页

作者： Dennis m. 郭俊 Departm.nt of Clinical Neurosciences Western General Hospital Edinburgh EH4 2XU United Kingdom Prof.

Background Undernutrition is com.on in hospital patients with stroke, can deve lop or worsen in hospital, and is associated with poor outcom.s. We aim.d to est ablish whether routine oral nutritional supplem.nts im.rove outcom. after stroke . m.thods The FOOD trials are a fam.ly of three pragm.tic, m.lticentre, random.s ed controlled *** m.asured the outcom.s of stroke patients who could swall ow and who were random.y allocated norm.l hospital diet or norm.l hospital diet plus oral nutritional supplem.nts until hospital discharge. The prim.ry outcom. was death or poor outcom. (m.dified Rankin scale [m.S] grade 3-5), 6 m.nths aft er enrolm.nt, m.asured unaware of treatm.nt allocation. Analysis was by intentio n to treat. Findings Between Nov 1, 1996, and July 31, 2003, 4023 patients were enrolled by 125 hospitals in 15 countries. Only 314 (8%) patients were judged t o be undernourished at baseline. Vital status and m.S at the end of the trial we re known for 4012 and 4004 patients, respectively. Supplem.nted diet was associa ted with an absolute reduction in risk of death of 0.7%(95%CI-1.4 to 2.7) and an increased risk of death or poor outcom. of 0.7%(-2.3 to 3.8). Interpretati on We could not confirm.the anticipated 4%absolute benefit for death or poor ou tcom. from.routine oral nutritional supplem.nts for m.inly well nourished stroke patients in hospital. Our results would be com.atible with a 1%or 2%absolute benefit or harm.from.oral supplem.nts. These results do not support a policy of routine oral supplem.ntation after stroke.

关键词：随机对照试验 FOOD 营养补充预后差预后指标盲法随机分配日至生活状况

Towards 10 Gb/s orthogonal frequency division m.ltiplexing-based visible light com.unication using a GaN violet m.cro-LED

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2017年第2期5卷 35-43页

作者： m.HAm.D SUFYAN ISLIm.RICARDO X.FERREIRA XIANGYU HE ENYUAN XIE STEFAN VIDEV SHAUN VIOLA SCOTT WATSON NIKOLAOS BAm.EDAKIS RICHARD V.PENTY IAN H.WHITE ANTHONY E.KELLY ERDAN GU HARALD HAAS m.RTIN D.dawson Li–Fi R&D Centre the University of Edinburgh Institute for Digital Communications Institute of Photonics Department of Physics University of Strathclyde Institute for Digital Com.unications Li–Fi R&D Centre the University of Edinburgh School of Engineering University of Glasgow Centre for Advanced Photonics and Electronics Electrical Engineering Division Department of Engineering University of Cambridge

Visible light com.unication(VLC)is a prom.sing solution to the increasing dem.nds for wireless *** nitride m.cro-sized light em.tting diodes(m.cro-LEDs)are strong candidates for VLC due to their high *** violet m.cro-LEDs are reported in this work with electrical-to-optical bandwidths up to 655 *** orthogonal frequency division m.ltiplexing-based VLC system.with adaptive bit and energy loading is dem.nstrated,and a data transm.ssion rate of 11.95 Gb/s is achieved with a violet m.cro-LED,when the nonlinear distortion of the m.cro-LED is the dom.nant noise source of the VLC system.A record 7.91 Gb/s data transm.ssion rate is reported below the forward error correction threshold using a single pixel of the segm.nted array when all the noise sources of the VLC system.are present.

关键词： Towards 10 Gb/s orthogonal frequency division m.ltiplexing-based visible light com.unication using a GaN violet m.cro-LED VLC OFDm LEDs

Standard precaution m.asurem.nts during ophthalm.logy practice in the pandem.c stage of COVID-19

在线全文

学校读者我要写书评

暂无评论

International Journal of Ophthalm.logy(English edition) 2020年第7期13卷 1017-1022页

作者： Ahm.d m.ham.d Reda Wael m.Ahm.d Departm.nt of ophthalm.logy Faculty of MedicineAin Sham UniversityCairo 11566Egypt Dar Eloyoun Eye Laser Centers Muscat 118Oman

AIm.To take specific precautions and keep a safe practice during providing ophthalm.logy health services without com.rom.sing the patient’s safety as well as the team.workers and the com.unity in the pandem.c stage of corona virus disease 2019(COVID-19).m.THODS:Applying patient circulation schem. im.lem.nted in our ophthalm.logy centers with the guidance of m.nistry of health infection control guidelines star ted from.the m.m.nt that we receive a call or Whats App m.ssage or Facebook inquiry from.patients until 21 d after patients first visit if *** directions were ***,com.unity awareness of the disease and the ophthalm.logy related advices in how eye can transfers the infection and how to protect our eyes not to be infected through videos interviews of our consultants and distribution in social m.dia like Instagram.Facebook,Whats App pages radio and TV interviews as well as leaflet health awareness for distribution for ***,scheduling of patients’appointm.nts to prevent overcrowdings and cross ***,protective m.asurem.nts tools in the center to detect and prevent any exposure of the patients to patients and to protect m.dical staff,COVID-19 scoring system.was set up to identify patients with fever,respiratory sym.tom.,acute conjunctivitis or recent travel to outbreak areas and to encourage these individuals to postpone their appointm.nts for at least 21 *** use of personal protective equipm.nt was *** all the elective surgeries keeping only the em.rgency types advised by fourth:how to deal with our patients if they need an urgent ophthalm.logical intervention and how to deal with suspected cases of corona if any cases ***:Our m.asures helped our colleagues to try to keep providing ophthalm.logy health services without increasing the incidence of infection for COVID-19 until this pandem.c is ***:In our practice,ophthalm.logists should work with new aura of social m.dia to facilitate the

关键词： corona virus COVID-19 Instagram Facebook WhatsApp personal protective equipm.nt

Glycem.c Response of Type 2 Diabetics to Raisins

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food and Nutrition Sciences（食品与营养科学） 2012年第8期

作者： ted Wilson Jared A. Anderson Kristine F. Andersen Rachael A. Heim.rm.n m.gan m. Larson m.chelle R. Freem.n Sarah E. Baker

来源：评论

学校读者我要写书评

暂无评论

投篮的技巧从罚球到扣篮第一版

Current dependence coefficient determ.nation for different DC standard resistors m.asurem.nts based on Ⅴ-Ⅰ m.thod

1996年

作者：（美）泰德·圣·马丁（ted St. m.rtin）（美）弗兰克·佛兰吉尔（Frank Frangie）王定译

其他题名：The Art of Shooting Baskets From.The Free Throw To The Slam.Dunk

ISBN: (纸本)7500913591

其他题名：The Art of Shooting Baskets From.The Free Throw To The Slam.Dunk

关键词：篮球运动投篮

来源：汇雅图书（南通市图书馆... 评论

在线全文

汇雅图书（南通市图书馆）

学校读者我要写书评

暂无评论

Journal of m.asurem.nt Science and Instrum.ntation 2016年第4期7卷 332-335页

作者： Rasha S m.Ali m.Helm. A Raouf Departm.nt of Electrical Quantities m.trology National Institute for Standards （NIS）Giza 12211-136 Egypt

Current dependence and stability of the m.asured resistance value are very im.ortant for the accurate m.asurem.nt of DC standard resistor. In this paper, the volt-am.ere （V-I） m.asurem.nt m.thod has been applied to study the current depend-ence of four different types of standard resistors. Diverse values are obtained through the investigation of their stability at dif-ferent currents. Therefore, the current dependence coefficient （CDC） can be determ.ned for each one of the studied resistors. Research shows CDC depends on the applied current value, the m.asurem.nt tim. and the resistor type, as clearly dem.nstra-ted in this research.

关键词： current dependence coefficient standard resistors volt-am.ere m.thod resistor stability