检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

基于水经济价值的长江口环境流量探讨

自然资源学报 2018年第3期33卷 467-477页

作者：唐瑜宋献方 bauer-Gottwein Peter 卜红梅杨丽虎张应华韩冬梅马英 Davidsen Claus 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室北京100101 中国科学院大学中丹学院北京100049 中国科学院大学资源与环境学院北京100190 Department of Environmental Engineering Technical University of Denmark2800 Kgs.LyngbyDenmark

适宜的环境流量对于维持河口生态系统稳定以及保障区域社会经济用水需求有着重要意义。论文以探讨水资源优化配置条件下长江口适宜环境流量为目的,基于水经济价值分析构建了长江中下游水资源优化配置模型,分析了区域缺水量以及环境流量... 详细信息

适宜的环境流量对于维持河口生态系统稳定以及保障区域社会经济用水需求有着重要意义。论文以探讨水资源优化配置条件下长江口适宜环境流量为目的,基于水经济价值分析构建了长江中下游水资源优化配置模型,分析了区域缺水量以及环境流量约束的影子成本随长江口环境流量约束的变化。结果表明:当环境流量约束超过临界值后,区域缺水量不断增加,且环境流量约束产生非零影子成本;通过区域供水目标和环境流量约束的影子成本图确定长江口适宜环境流量的上限和下限,得到20%、50%、75%及95%水资源保证率下,长江口适宜环境流量分别为27.10×10~9~29.65×10~9、25.50×10~9~27.12×10~9、23.08×10~9~24.62×10~9及17.72×10~9~19.65×10~9m^3/月;该环境流量标准可以满足一定目标下长江口的生态需求。

关键词：环境流量水资源配置水经济价值影子成本长江口

在线全文

学校读者我要写书评

暂无评论

不含CmR化合物的持久无氟碳防水整理剂

国际纺织导报 2016年第9期44卷 34-36页

作者： m.bauer L.Lohrey H.Bachus A.Hoflich R.Zyschka A.Otterbach 贺超恒(译) 李刚(校) CHT R Beitlich公司德国不详

如今,人们期望服装能够防水甚至防油污,以保护自身免受雨水与污垢的侵扰。但是如果生产商赋予服装这些特性,则往往需要加入对环境有害、甚至危害人类健康的化合物。近年来,基于氟碳树脂的织物整理技术已被应用,以使织物获得上述特性,然... 详细信息

如今,人们期望服装能够防水甚至防油污,以保护自身免受雨水与污垢的侵扰。但是如果生产商赋予服装这些特性,则往往需要加入对环境有害、甚至危害人类健康的化合物。近年来,基于氟碳树脂的织物整理技术已被应用,以使织物获得上述特性,然而,由于所用整理剂的持久性与毒性危害,会产生很多不良影响。拒水性一直是户外服与运动服装的一个关键指标。与此同时,现代高分子化学的发展促进了开发各种不含致癌、致突变和生殖毒性(CmR)化合物的持久无碳氟防水整理树脂替代品的可能性。

关键词：无氟碳致癌、致突变和生殖毒性(CmR) 防水

在线全文

学校读者我要写书评

暂无评论

用5-位取代的8羟基喹啉液液萃取铝和镓

湿法冶金 1988年第3期 52-57页

作者： D.bauer 才锡民

合成了一系列5-位取代的8羟基喹啉并研究了它们在强碱性介质中（3.5mNaOH）萃取分离镓和铝的性能。在合成的化合物中,只有YEN10和和YAN5(分别带有支链C10H21—CH C—C10H2l和C5H11一CH—CH11H23)萃取镓离子,所萃取络合物是Ga（YAN5）和G... 详细信息

合成了一系列5-位取代的8羟基喹啉并研究了它们在强碱性介质中（3.5mNaOH）萃取分离镓和铝的性能。在合成的化合物中,只有YEN10和和YAN5(分别带有支链C10H21—CH C—C10H2l和C5H11一CH—CH11H23)萃取镓离子,所萃取络合物是Ga（YAN5）和Ga（YEN10）2（OH）2Na+。萃取常数分别是107·5和104,而对铝的萃取常数分别是107·7和103·5。但其中YAN5不能从铝溶液中选择性萃取镓。两相传质速率正比于镓和萃取剂浓度。若速率用mol/m2·s表示,浓度用mol/L表示,则YAN5和YENl0的相传质常数分别是1.2×10-5和1.05×10-5。这些值均比Kelexl00的相应值低,界面测量结果表明,5-位取代的分子在界面被浓缩的程度要小于Kelex100。

关键词：羟基喹啉萃取剂浓度碱性介质萃取分离传质速率液液萃取辛醇有机相碳原子分配系数

Frequency and Antimicrobials Susceptibility Pattern of <i>Staphylococcus aureus</i>Associated with Wound Infections in Surgery Department, Wad madani Teaching Hospital, Sudan

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Pharmacology & Pharmacy 2021年第12期12卷 334-343页

作者： Sanaa m. Yousif Adam D. Abakar Bakri Y. m. Nour Salma O. Ibrahim Omer m. Abu Elhasan mirgani A. Yousif Sitelbanat Yassin Hajer m. Hussien mohamed Taj-Eldin Elhadi A. Ahmed National Blood Bank Ministry of Health Khartoum Sudan Department of medical Parasitology Faculty of Medical Laboratory Sciences University of Gezira Wad Medani Sudan Department of medical microbiology Faculty of Medical Laboratory Sciences University of Gezira Wad Medani Sudan Wad-madani College of medical Sciences and Technology Wad Medani Sudan Faculty of Pharmacy University of Gezira Wad Medani Sudan

Background: most community and hospital acquired infections are due to Staphylococcus aureus, these infections involve both local suppurative and systemic conditions. There is an increase in the incidence rates of acq... 详细信息

Background: Most community and hospital acquired infections are due to Staphylococcus aureus, these infections involve both local suppurative and systemic conditions. There is an increase in the incidence rates of acquiring resistant strains of Staphylococcus aureus in hospitals and community in Sudan. This study aims to detect frequency of Staphylococcus aureus isolated from surgical-sites infections (SSIs) and traumatic wounds, and to determine susceptibility to commonly used drugs. Methods: Prospective cross-sectional laboratory based study was followed, 250 patients admitted to Surgery Departments at Wad Madani Teaching Hospitals during 2019 and 2020 were recruited;with clinical manifestation of SSIs and or/traumatic wounds. Swab sample was taken from each participant and incubated aerobically on mannitol salt agar. Biochemical tests and 16rRNA gene used for Staphylococcus aureus identification. Antimicrobial susceptibility was accomplished using Kirby Bauer disc diffusion technique. Results:mily:Verdana;"> Infection rate of wounds in males and females equal 71% (17/250) and 29% (73/250), while infection rate in the age group of 41 to 60 y

关键词： Staphylococcus aureus Surgical-Sites Wounds meropeneme Sudan

拉科酰胺在癫痫持续状态中的应用--针对现有证据的系统评价

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

癫痫杂志 2018年第5期4卷 446-460页

作者： Adam Strzelczyk Johann Philipp Zollner Laurent m Willems 肖英凤童馨慕洁 Julie Jost Esther Paule Susanne Schubert-Bast Felix Rosenow Sebastian bauer

拉科酰胺(Lacosamide,LCm)的静脉制剂具有良好的耐受性和安全性,促使其在癫痫持续状态(Status Epilepticus,SE)中得到应用。本项系统评价的目的是确定和评估LCm在SE中的使用情况。在电子数据库中用联合检索方式对2008年—2016年10月的... 详细信息

拉科酰胺(Lacosamide,LCm)的静脉制剂具有良好的耐受性和安全性,促使其在癫痫持续状态(Status Epilepticus,SE)中得到应用。本项系统评价的目的是确定和评估LCm在SE中的使用情况。在电子数据库中用联合检索方式对2008年—2016年10月的文献进行了系统检索,并使用标准化的评估表格从各项研究中将有关研究设计、方法框架、数据源、有效性和LCm引起的不良反应的信息进行提取并系统地报告。研究共评估了522次SE发作,其中包括486例成人和36例儿童及青少年发作,女性占51.7%。LCm的总体效力为57%。LCm对非惊厥性(57%,82/145)和全面痉挛性(61%,30/49,P=0.68)SE的效力相似,但对局灶运动性SE的总体有效率更高(92%,34/39,Pm在用药次序靠后时其疗效从100%下降到20%。治疗期间的主要不良反应是眩晕,视力异常,复视和共济失调。总体而言,LCm具有良好的耐受性,并且没有具临床意义的药物相互作用。现有数据表明LCm在SE中的使用是有前景的,有效率为57%。LCm的优势在于没有潜在的药物相互作用,并且在紧急情况需迅速增加剂量时可静脉使用。

关键词：拉科酰胺癫痫持续状态痫性发作癫痫电压门控钠通道

冠状动脉血管成像的扫描剂量:双能量、双源与16层CT的对比

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 2011年第3期 294-295页

作者： J.m.Kerl R.W.bauer T.B.maurer R.Aschenbach H.Korkusuz T.Lehnert 庞国栋 Department of Diagnostic and Interventional Radiology Johann Wolfgang Goethe-University

目的对比双能量CT(DECT)、双源CT(DSCT)与16层CT冠状动脉CTA(cCTA)的放射剂量估算及影像质量。材料与方法组1、组2、组3均为68例病人分别采用16层

关键词：心脏CT 双能量CT CT 双源CT 冠状动脉CT血管成像

基于红藻氨酸和劳拉西泮联合给药的新型人类获得性颞叶癫痫动物模型

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

癫痫杂志 2019年第2期5卷 140-147页

作者： Kienzler-Norwood F Costard L Sadangi C müller P Neubert V bauer S Rosenow F Norwood BA 李思思(译) 熊维希慕洁不详

红藻氨酸(Kainic acid,KA)是一种有效的谷氨酸类似物,用于诱导啮齿动物的神经退行性变和颞叶癫痫(TLE)。KA可诱发严重的、持续的癫痫发作,即惊厥性癫痫持续状态(convulsive Status epilepticus,cSE),没有药物干预的情况下通常是致命的... 详细信息

红藻氨酸(Kainic acid,KA)是一种有效的谷氨酸类似物,用于诱导啮齿动物的神经退行性变和颞叶癫痫(TLE)。KA可诱发严重的、持续的癫痫发作,即惊厥性癫痫持续状态(convulsive Status epilepticus,cSE),没有药物干预的情况下通常是致命的。在过去30年里,使用KA来建立人类癫痫动物模型毫无疑问被证明是有价值的,但显著的可变性和死亡率一直使结果变得不确定。这些问题很可能是cSE导致的,这是一种本质上可变且无法控制的全或无反应。然而,cSE与人类疾病的相关性尚不确定,因为大多数癫痫患者从未经历过这种情况。该研究试图构建一种简单的、基于KA的TLE动物模型,以避免cSE及其混淆因素。成年雄性SpragueDawley大鼠分别接受皮下注射KA(5 mg)和劳拉西泮(0.25 mg),剂量分别约为15.0 mg/kg和0.75 mg/kg。持续的视频脑电图(VEEG)被用来监测急性癫痫的发作和检测自发性癫痫发作。免疫细胞化学、Fluoro-Jade B染色和Timm染色被用来描述急性和慢性神经病理学改变。急性局灶海马癫痫发作在约30 min后开始并在几小时后自行终止。广泛的海马神经变性在4 d之后发现。在所有动物中自发性的局灶海马癫痫发作平均12 d之后开始。典型的海马硬化和苔藓纤维出芽的形成是长期神经病理学的特征。发病率和死亡率均为0%。我们发现在联合注射低剂量苯二氮卓类药物时,KA全身性给药的作用可局限于海马。这意味着劳拉西泮可以阻止痉挛性癫痫发作,而没有真正阻止癫痫电活动。这个创新的、无cSE的动物模型,可靠地模拟了获得性颞叶内侧癫痫所定义的特征:海马硬化和在长时间无癫痫发作后自发的海马起源的癫痫发作,并不伴显著的发病率、死亡率或无反应者。

关键词：非惊厥性癫痫持续状态苯二氮卓海马硬化

REVIEW OF PARTICLE PHYSICS

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2014年第9期38卷 1-4页

作者： K.A.Olive K.Agashe C.Amsler m.Antonelli J.-F.Arguin D.m.Asner H.Baer H.R.Band R.m.Barnett T.Basaglia C.W.bauer J.J.Beatty V.I.Belousov J.Beringer G.Bernardi S.Bethke H.Bichsel O.Biebe E.Blucher S.Blusk G.Brooijmans O.Buchmueller V.Burkert m.A.Bychkov R.N.Cahn m.Carena A.Ceccucci A.Cerr D.Chakraborty m.-C.Chen R.S.Chivukula K.Copic G.Cowan O.Dahl G.D'Ambrosio T.Damour D.de Florian A.de Gouvea T.DeGrand P.de Jong G.Dissertor B.A.Dobrescu m.Doser m.Drees H.K.Dreiner D.A.Edwards S.Eidelman J.Erler V.V.Ezhela W.Fetscher B.D.Fields B.Foster A.Freitas T.K.Gaisser H.Gallagher L.Garren H.-J.Gerber G.Gerbier T.Gershon T.Gherghetta S.Golwala m.Goodman C.Grab A.V.Gritsan C.Grojean D.E.Groom m.Grnewald A.Gurtu T.Gutsche H.E.Haber K.Hagiwara C.Hanhart S.Hashimoto Y.Hayato K.G.Hayes m.Heffner B.Heltsley J.J.Hernandez-Rey K.Hikasa A.Hocker J.Holder A.Holtkamp J.Huston J.D.Jackson K.F.Johnson T.Junk m.Kado D.Karlen U.F.Katz S.R.Klein E.Klempt R.V.Kowalewski F.Krauss m.Kreps B.Krusche Yu.V.Kuyanov Y.Kwon O.Lahav J.Laiho P.Langacker A.Liddle Z.Ligeti C.-J.Lin T.m.Liss L.Littenberg K.S.Lugovsky S.B.Lugovsky F.maltoni T.mannel A.V.manohar W.J.marciano A.D.martin A.masoni J.matthews D.milstead P.molaro K.monig F.moortgat m.J.mortonson H.murayama K.Nakamura m.Narain P.Nason S.Navas m.Neubert P.Nevski Y.Nir L.Pape J.Parsons C.Patrignani J.A.Peacock m.Pennington S.T.Petcov Kavli IPmU A.Piepke A.Pomarol A.Quadt S.Raby J.Rademacker G.Raffel B.N.Ratcliff P.Richardson A.Ringwald S.Roesler S.Rolli A.Romaniouk L.J.Rosenberg J L.Rosner G.Rybka C.T.Sachrajda Y.Sakai G.P.Salam S.Sarkar F.Sauli O.Schneider K.Scholberg D.Scott V.Sharma S.R.Sharpe m.Silari T.Sjostrand P.Skands J.G.Smith G.F.Smoot S.Spanier H.Spieler C.Spiering A.Stahl T.Stanev S.L.Stone T.Sumiyoshi m.J.Syphers F.Takahashi m.Tanabashi J.Terning L.Tiator m.Titov N.P.Tkachenko N.A.Tornqvist D.Tovey G.Valencia G.Venanzoni m.G.Vincter P.Vogel A.Vogt S.P.Wakely W.Walkowiak C.W.Walter D.R.Ward G.Weiglein D.H.Weinberg E.J.Weinberg m.White L.R.Wiencke C.G.Wohl L.Wolfenstein J.Womersley C.L. University of minnesota School of Physics and Astronomy116 Church St.S.E.MinneapolisMN 55455USA University of maryland Department of PhysicsCollege ParkMD 20742-4111USA Albert Einstein Center for Fundamental Physics Universitat BernCH-3012 BernSwitzerland Lab.Nazionali di Frascati dell'INFN CP 13via E.Fermi40I-00044 Frascati(Roma)Italy Departement de physique Universite de MontrealC.P.6128succ.centre-villeMontreal(Quebec) H3C 3J7Canada Pacific Northwest National Laboratory 902 Battelle BoulevardRichlandWA 99352USA Department of Physics and Astronomy University of OklahomaNormanOK 73019USA Department of Physics University of WisconsinMadisonWI 53706USA Physics Division Lawrence Berkeley National Laboratory1 Cyclotron RoadBerkeleyCA 94720USA CERN European Organization for Nuclear ResearchCH-1211 Geneve 23Switzerland Department of Physics The Ohio State University191 W.Woodruff Ave.ColumbusOH 43210 COmPAS Group Institute for High Energy PhysicsRU- 142284ProtvinoRussia LPNHE IN2P3-CNRS et Universites de Paris 6 et 7F-75252 ParisFrance max-Planck-Institute of Physics 80805 MunichGermany Department of Physics University of WashingtonSeattleWA 98195USA Ludwig-maximilians-Universitat Fakultdt für PhysikSchellingstr.4D-80799 MünchenGermany Enrico Fermi Institute and Department of Physics University of ChicagoChicagoIL 60637-1433USA Department of Physics Syracuse UniversitySyracuseNY13244USA Department of Physics Columbia University538 W.120th StreetNew YorkNY10027 USA High Energy Physics Group Blackett LaboratoryImperial CollegePrince Consort RoadLondon SW7 2AZUK Jefferson Lab 12000 Jefferson Ave.Newport NewsVA 23606USA Department of Physics University of VirginiaPO Box 400714CharlottesvilleVA 22904USA Fermi National Accelerator Laboratory P.O.Box 500BataviaIL 60510USA Kavli Institute for Cosmological Physics University of ChicagoChicagoIL 60637-1433USA Department of Physics and Astronomy University of SussexFalmerBrighton BN1 9QHUK Department o

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,283 new measurements from 899 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as heavy neutrinos, supersymmetric and technicolor particles, axions, dark photons, etc. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as Supersymmetry, Extra Dimensions, Particle Detectors, Probability, and Statistics. Among the 112 reviews are many that are new or heavily revised including those on： Dark Energy, Higgs Boson Physics, Electroweak model, Neutrino Cross Section measurements, monte Carlo Neutrino Generators, Top Quark, Dark matter, Dynamical Electroweak Symmetry Breaking, Accelerator Physics of Colliders, High-Energy Collider Parameters, Big Bang Nucleosynthesis, Astrophysical Constants and Cosmological Parameters. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review. All tables, listings, and reviews （and errata） are also available on the Particle Data Group website： http ：//pdg. lbl. gov.

关键词： REVIEW OF PARTICLE PHYSICS

Isolation and Antibiotic-Resistant Pattern of Opportunistic Infectious microbes from the Infected Sites of Oral Cancer Patients Compared to That of Healthy People Oral microbiota

在线全文

学校读者我要写书评

暂无评论

Advances in microbiology 2021年第8期11卷 343-359页

作者： Zareen Nawar Samiha Ashreen m. mahboob Hossain Akash Ahmed Biotechnology Program Department of Mathematics and Natural Sciences Brac University Dhaka Bangladesh microbiology Program Department of Mathematics and Natural Sciences Brac University Dhaka Bangladesh

Introduction: Oral cancer is the third most prominent type of cancer in Bangladesh. During or after oral cancer treatment, immune-compromised cancer patients may be susceptible to an infection by multi-drug-resistant opportunistic microbes. This study aims to identify the prevalent microorganisms from the infected site of oral cancer patients and observe their antibiotic susceptibility pattern. materials and methods: Clinical samples were collected from the infected sites of oral cancer patients and healthy people. The swabs collected were placed on nutrient agar slant, then incubated for 24 hours at 37ºC. Bacteria from the slant were inoculated in several selective media (mannitol Salt Agar media, KF Streptococcus Agar media, Cetrimide Agar, Eosin methylene Blue Agar). Several biochemical tests identified opportunistic microorganisms. Finally, the antibiotic susceptibility test was performed by the Kirby bauer disc diffusion method. Results: The study found that 65.4% of microbes isolated from the patients’ oral cavities were Gram-negative bacteria, and 34.6% were Gram-positive bacteria. Among the patient group isolates (n = 55), the most prevalent organism was Pseudomonas spp. (30;54.54%). Others were Klebsiella spp. (27;49.09%), Staphylococcus spp. (24;43.63%), E. coli (14;25.45%), Streptococcus spp. (14;25.45%), Proteus spp. (12;21.8%) and Enterococcus spp. (6;10.90%). Both Gram-positive and Gram-negative microbes from the patient group have shown high resistance to the commonly used antibiotics. In the control group (n = 50), the most prevalent organism was Staphylococcus spp. (15;30%). Other organisms were Streptococcus spp. (6;12%), Klebsiella spp. (11;22%), E. coli (3;6%), Streptococcus spp. (14;25.45%), Pseudomonas spp. (8;16%). The microbes of the control group showed less resistance to the antibiotics and rather showed sensitivity to them. Co

关键词： Antibiotic Resistance Gram-Negative Bacteria Gram-Positive Bacteria Immuno-Compromised Oral Cancer