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疯狂英语（初中天地） 2007年第3期 54-57页

作者： Billie cohen 童真

19岁的凯特琳·吉利兰德在经历了一次严重的膝盖创伤后,以为自己的事业会到此为止。然而两年之后,她在纽约市芭蕾舞团继续跳舞。

关键词：纽约市芭蕾舞团 sAB 芭蕾舞埃利奥特半月板

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A General Theorem on the Conditional Convergence of Trigonometric series

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Open Journal of Discrete Mathematics 2013年第1期3卷 16-17页

作者： Edgar A. cohen Jr. Formerly of the Information sciences Branch Naval Surface Warfare Center White Oak USA

The purpose of this paper is to establish, paralleling a well-known result for definite integrals, the conditional convergence of a family of trigonometric sine series. The fundamental idea is to group appropriately the terms of the series in order to show absolute divergence of the series, given the well-established result that the series as it stands is convergent.

关键词： Conditionally Convergent steadily Decreasing sequence Euler’s Formula

Recovery rates of combination antibiotic therapy using in vitro microdialysis simulating in vivo conditions

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Journal of Pharmaceutical Analysis 2018年第6期8卷 407-412页

作者： Jayesh A.Dhanani suzanne L.Parker Jeffrey Lipman steven C.Wallis Jeremy cohen John Fraser Adrian Barnett Michelle Chew Jason A.Roberts Burns Trauma and Critical Care Research Centre The University of Queensland UQ Centre for Clinical Research Department of Intensive Care Medicine Royal Brisbane & Women's Hospital Faculty of Health Queensland University of Technology Critical Care Research Group The University of Queensland Institute of Health and Biomedical Innovation & school of Public Health and social Work Queensland University of Technology Department of Anaesthesiology and Intensive Care and Department of Medical and Health Sciences Link?ping University school of Pharmacy The University of Queensland Department of Pharmacy Royal Brisbane & Women's Hospital

Microdialysis is a technique used to measure the unbound antibiotic concentration in the interstitial spaces, the target site of action. In vitro recovery studies are essential to calibrating the microdialysis system for in vivo studies. The effect of a combination of antibiotics on recovery into microdialysate requires investigation. In vitro microdialysis recovery studies were conducted on a combination of vancomycin and tobramycin, in a simulated in vivo model. Comparison was made between recoveries for three different concentrations and three different perfusate flow rates. The overall relative recovery for vancomycin was lower than that of tobramycin. For tobramycin, a concentration of 20μg/mL and flow rate of 1.0μL/min had the best recovery. A concentration of 5.0μg/mL and flow rate of 1.0μL/min yielded maximal recovery for vancomycin. Large molecular size and higher protein binding resulted in lower relative recoveries for vancomycin. Perfusate flow rates and drug concentrations affected the relative recovery when a combination of vancomycin and tobramycin was tested. Low perfusate flow rates were associated with higher recovery rates. For combination antibiotic measurement which includes agents that are highly protein bound, in vitro studies performed prior to in vivo studies may ensure the reliable measurement of unbound concentrations.

关键词： Microdialysis Combination antibiotic therapy Relative recovery rate Pharmacokinetics Anti-infectives Protein binding

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spontaneous twisting of a collapsed carbon nanotube

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Nano Research 2017年第6期10卷 1942-1949页

作者： Hamid Reza Barzegar Aiming Yan sinisa Coh Eduardo Gracia-Espino Claudia Ojeda-Aristizabal Gabriel Dunn Marvin L. cohen steven G. Louie Thomas Wagberg Alex Zettl Department of Physics University of California Berkeley CA 94720 USA Department of Physics Umea University 90187 Umea Sweden Materials sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA Kavli Energy Nanosciences Institute at the University of California Berkeley and the Lawrence Berkeley National Laboratory Berkeley CA 94720 USA

We study the collapsing and subsequent spontaneous twisting of a carbon nanotube by in situ transmission electron microscopy （TEM）. A custom-sized nanotube is first created in the microscope by selectively extracting shells from a parent multi-walled tube. The few-walled, large-diameter daughter nanotube is driven to collapse via mechanical stimulation, after which the ribbon-like collapsed tube spontaneously twists along its long axis. In situ diffraction experiments fully characterize the uncollapsed and collapsed tubes. The experimental observations and associated theoretical analysis indicate that the origin of the twisting is compressive strain.

关键词： multi-walled carbonnanotube collapsed carbon nanotube in situ TEM electron diffraction twisting graphene nanoribbons

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苏联经验重探

Long-term follow-up of distal intestinal obstruction syndrome in cystic fibrosis

作者： s.F.·科恩(s.F. cohen)

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World Journal of Gastroenterology 2015年第1期21卷 318-325页

作者： Moran Lavie Tzipora Manovitz Daphna Vilozni sarina Levy-Mendelovich Ifat sarouk Ilana Weintraubv David shoseyov Malena cohen-Cymberknoh Joseph Rivlin Ori Efrati Pediatric Pulmonary Unit and the National Center for Cystic Fibrosis Edmond and Lily Safra Children’s HospitalSheba Medical CenterTel Hashomer 52621Israel Cystic Fibrosis Center and Pediatric Pulmonary Unit Hadassah Hebrew University Medical CenterJerusalem 91120Israel Cystic Fibrosis Center Carmel Medical CenterHaifa 34362Israel

AIM: To investigate the long-term follow-up of distal intestinal obstruction syndrome(DIOs) in Israeli cystic fibrosis(CF) ***: This is a multi-center,comparative,retrospective study in which we reviewed the medical records of all CF patients from three major CF centers in Israel who were treated in the period from 1980 to *** diagnosed with DIOs were defined as the study *** patients were diagnosed with DIOs based on their clinical presentation and typical findings on either abdominal X-ray or computerized tomography *** the control group,CF patients with no DIOs were matched to the patients in the study group for age,sex,and cystic fibrosis transmembrane conductance regulator(CFTR) *** both groups,the collected data included age,sex,CFTR genotype,weight,height,and body mass *** data included respiratory function tests in the last five years prior to the study,respiratory function test immediately before and after the DIOs event,number of hospitalizations,sputum culture results,and CFrelated conditions diagnosed according to the CF clinical practice *** the study group,data on the DIOs treatment and tendency for DIOs recurrence were also ***: The medical charts for a total of 350 CF patients were *** the 350 CF patients,26(7.4%) were diagnosed with *** control group included 31 CF patients with no DIOs *** mean follow-up period was 21.6 ± 8.2 *** total of DIOs episodes in the follow-up period was *** distribution of DIOs episodes was as follows: 6/26(23.1%) study patients had one episode of DIOs intheir lifetime,7/26(26.9%) had two episodes,7/26(26.9%) had three episodes,and 6/26(23.1%) had four or more *** to the control group,DIOs patients had a significantly higher incidence of meconium ileus in the past(65.4% vs 0%,respectively,P spergillus ***(34.6% vs 3.2%,respectively,P spitali

关键词： Distal intestinal obstruction syndrome Cystic fibr

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HMX的燃烧模型与燃烧化学

国外固体火箭技术 1987年第3期 23-33页

作者： N.s.cohen 姚润森

本文根据Ben Reuven和Caveny的工作,给出了HMX的燃烧模型。提出了两种燃烧化学以供选择。为了求得凝聚相和复杂程度不等的三种气相模型收敛解,作了若干简化假设。根据本文的计算结果断定,HMX的燃烧过程是由气相分解反应控制的;单纯使用... 详细信息

本文根据Ben Reuven和Caveny的工作,给出了HMX的燃烧模型。提出了两种燃烧化学以供选择。为了求得凝聚相和复杂程度不等的三种气相模型收敛解,作了若干简化假设。根据本文的计算结果断定,HMX的燃烧过程是由气相分解反应控制的;单纯使用催化法,难于大幅度提高燃速。为了计算方便,可以在守恒方程中不计质量扩散,但除了个别场合,一般来说,能量扩散不能忽略。

关键词：复合推进剂奥克托金推进剂燃速数学模型

Extensive spinal Epidural Abscess: Cord Compression with Permanent Neurological Defects

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surgical science 2023年第8期14卷 557-564页

作者： Evan cohen Melissa Zahl Lindsay Hock Michael Olshansky Montefiore st. Luke’s Cornwall Hospital Newburgh NY USA Touro College of Medicine Middletown NY USA

spinal epidural abscesses (sEA) are considerably rare and tend to present over two to five vertebral segments. Occasionally, there will be two or more noncontiguous areas of pyogenic collections [1]. Minimal cases have been reported to span the entire vertebral column;a meta-analysis estimates that 1% of all sEA are holospinal [2]. The triad of presenting symptoms includes fever, back pain (often midline), and neurologic defects [1] [2] [3]. Early detection is identified as a critical aspect of improved outcomes. Cases that do not present in this manner or with other masking symptoms can lead to delayed diagnosis, thus delaying treatment. In the event of cord compression, the occurrence of neurologic defects increases. Time from the onset of clinical manifestations to the operating room is crucial in reversing symptoms [2]. This article seeks to review a case of a 65-year-old male that presented to the emergency department (ED) due to a falling second to weakness and thigh pain. On presentation, he was also noted to have rhabdomyolysis causing acute kidney injury (AKI) with tubular necrosis. The patient was admitted to the hospital with a complex history of progressive leg weakness, pain in the lower back, incontinence, and elevated white blood cell count. Days into the admission, a magnetic resonance imaging (MRI) study was performed, which revealed a continuous posterior sEA from C4 to s2 with anterior mass effect causing spinal cord compression. Emergency neurosurgery was scheduled for laminectomies in the cervical, thoracic and lumbar spine to drain the abscess. Evaluation of this complex medical course, surgical approach to drainage of an incessant spinal column abscess, and sustained neurologic defects will be discussed.

关键词： spinal Epidural Abscess Holospinal Abscess Cauda Equina spinal Compression

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应用热扩散法测定香蕉树蒸腾速率

应用生态学报 2007年第1期18卷 35-40页

作者：刘海军 sHABTAI cohen JOsEF Tanny 黄冠华中国农业大学水利与土木工程学院 Institute of soil Water and Environmental SciencesAgricultural Research OrganizationThe Volcani CenterP.O.Box 6Bet Dagan 50250Israel

香蕉树植株高大,一般采用间接方法确定耗水量,但所得结果受土壤、大气和农艺措施等因素的影响较大.本文于2005年11月15日—12月5日在温室内采用热扩散法(即Granier法)测定香蕉树的茎液流,并与用数字天平(称重法)测定的香蕉树蒸腾速率进... 详细信息

香蕉树植株高大,一般采用间接方法确定耗水量,但所得结果受土壤、大气和农艺措施等因素的影响较大.本文于2005年11月15日—12月5日在温室内采用热扩散法(即Granier法)测定香蕉树的茎液流,并与用数字天平(称重法)测定的香蕉树蒸腾速率进行对比试验.结果表明,Granier法测定的日茎液流量与称重法测定的日蒸腾量相差4%.Granier法测定的茎液流速率一般滞后于称重法确定的蒸腾速率1h左右.当日蒸腾量小于0.05L.m-2(活性叶面积)时,Granier方法不能测定茎液流量.Granier传感器一般在安装2～3d后即可正常工作,同时在多株植株上安装Granier传感器取其平均流速值计算蒸腾量可以明显减小测量误差.

关键词： Granier方法称重法香蕉树蒸腾茎液流

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