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4631篇 您的检索式:作者名="Mackenzie"
    题名 作者 年代 出处 被引量
1脑缺氧是影响严重颅脑创伤患者短期预后的独立危险因素(英文)显示文摘Background:Brain hypoxia(BH)can aggravate outcome after severe traumatic brain injury(TBI).Whether BH or reduced brain oxygen(Pbto2)is an independent outcome predictor or a marker of disease severity is not fully elucidated.Objective To analyze the relationship between Pbto2,intracranial pressure(ICP),and cerebral perfusion pressure(CPP)and to examine whether BH correlates with worse outcome independently of ICP and CPP.Methods We studied103patientsOddo M Levine JM Mackenzie L Frangos S Feihl F Kasner SE Katsnelson M Pukenas B Macmurtrie E Maloney-Wilensky E Kofke WA Leroux PD 2011中华神经外科疾病研究杂志2011,10,5:21
2从加拿大医学生外科实习谈加强对医学生临床实践能力的培养显示文摘医学教育国际化教学改革新形势下,如何加强医学生临床实践能力的培养是我们亟待思考和解决的问题。本文介绍了加拿大麦吉尔大学医学生外科实习情况,并与国内医学生临床实习情况的异同进行了比较,对加强医学生临床实践能力培养的新举措进行了探讨。袁时芳 Kent Mackenzie 2011西北医学教育2011,19,3:9
3脊柱侧凸内固定术后手术部位感染:有关感染率、危险因素和致病菌的一项多中心分析显示文摘目前有关儿童脊柱侧凸矫形术后手术部位感染的病例有较多报道,这些病例往往需要再次入院施行手术进行清创冲洗,亦可能需要去除内置物及进行翻修手术,增加了医疗成本。本研究目的在于评估不同病因、不同手术方式脊柱侧凸患者的手术部位感染发生率,并分析外科伤口感染的危险因素及致病菌。Mackenzie WG Matsumoto H Williams BA 张皓南 尹庆水 2013中国骨科临床与基础研究杂志2013,5,3:9
4Large-area nanopatterned graphene for ultrasensitive gas sensing显示文摘Alberto Cagliani David Micheal Angus Mackenzie Lisa Katharina Tschammer Filippo Pizzocchero Kristoffer Almdal Peter Boggild 2014Nano Research2014,7,5:7
5体育文化差异视角下中美大学生运动员运动动机比较显示文摘动机是驱使人做事的内在动力,是人和环境交互作用的结果。采用专家访谈法和问卷调查法,从体育文化差异视角比较中美大学生运动员的运动动机。研究表明,中美大学生运动员在对项目的喜爱和训练的目的等内在动机和对奖学金的需求等外在动机方面都存在非常显著的差异,无动机方面无显著性差异;两国学生运动员动机的差异是受两国对体育认识的不同、伦理文化与契约制度文化的不同的影响,学校的训练环境和学校招生管理制度不同等因素影响;内外动机和所处环境的共同作用使两国学生参与训练的行为表现出较大的不同。杨丹 施兰平 Mackenzie Wartenberger 2018沈阳体育学院学报2018,37,5:7
6Investigation of lead and zinc dispersion from an abandoned mine site at Tyndrum, Scotland, using tree bark measurements显示文摘Nurlidia Mansor Ian D. Pulford Angus B. MacKenzie 2006Chinese Journal Of Geochemistry2006,25,B08:5
7揭示2021年中国北方特大沙尘暴的粉尘传输过程显示文摘大气粉尘是地球系统的重要组成部分,沙尘暴是诸多国家尤其是中国面临的严峻环境问题.亚洲东部地区2021年3月15~16日发生的特大沙尘暴事件是过去十年中最大的一次,为从多学科角度理解同一天气过程下粉尘传输机制也提供了独特机遇.本研究在同一特大沙尘暴事件中不同地点系统采集了新鲜粉尘样品,采样地点涉及西起嘉峪关东至济南等受沙尘暴影响的9个不同城市.这种系统的采样策略使我们能够通过分析不同样品稀土元素、Sr-Nd同位素组成并结合高时间分辨率遥感数据和实时气象数据,从粉尘物质成分变化的角度探讨粉尘释放和传输过程.结果显示,外部物源是本次沙尘暴物质的主要来源(>70%),携带粉尘的气团运动轨迹途经的土地覆盖类型决定了粉尘系统的发育过程及强度.利用地球化学端元模型及新鲜降尘的Sr-Nd同位素组成并结合背光散射雷达监测数据(CALIPSO)及MODIS影像,定量评估了'3·15'特大沙尘暴事件期间中国北方不同地点降尘的潜在物源贡献.结果表明,最初起源于蒙古戈壁的细粒沉积物贡献显著,但各个城市附近的沙漠/沙地仍然是沙尘暴物质的主要补给来源.本研究为亚洲特大沙尘暴期间的粉尘传输机制提供了基于遥感观测和地球化学分析的直接证据,揭示了粉尘系统从源到汇是一个复杂且随时进行物质交换的开放系统,大规模沙尘暴的粉尘物质高度混合,物质成分接近上地壳平均值,远源输送和沿途补给是维持粉尘系统发育的重要机制.梁鹏 陈波 杨小平 刘倩倩 李艾芮 Lydia Mackenzie 张德国 2022Science Bulletin2022,67,1:5
8Ultraviolet Light Fights New Virus显示文摘In the fight against the coronavirus disease 2019(COVID-19)pandemic,an old weapon has re-emerged[1].More than a century after Niels Finsen won the 1903 Nobel Prize for discovering that ultraviolet(UV)light could kill germs[2],UV light is surging in popularity as a method for disinfecting hospital rooms and other public spaces.Dana Mackenzie 2020Engineering2020,6,8:3
9High school sports programs differentially impact participation by sex显示文摘背景:研究表明,参加体育活动可降低儿童和青少年肥胖的风险。学校是促进儿童和青少年参加体育活动的理想环境,但目前尚不清楚体育活动的'获得'和'选择'如何影响学生的参与度,也不清楚学校体育课的特点对学生参与体育的影响是否存在性别差异。本研究旨在评价高中体育运动项目的特点,并确定这些体育课程对男女生参与运动队的影响程度。方法:用电话采访的方式纵向调查了1,244名新罕布什尔州和佛蒙特州的学生。学生自述他们小学至高中阶段参与运动队的情况。通过调查高中职员了解体育机会。在本研究中,'体育机会'是指每100名学生所对应的学校提供的体育项目种类《选择)和学校提供的体育种类中不限制参加人数的体育项目的比例(获得)。结果:约70%的儿童参加了至少一个体育运动队,男生为73%,女生为66%。研究发现在性别和两个体育机会变量之间存在显著交互影响。控制小学生参与体育活动和其他协变量后,发现如果学校不限制最受欢迎的体育项目的参与人数,男生会参加更多的体育运动队(RR=1.12,p<0.01)。相反,如果学校提供广泛的体育项目,女生会参加更多的体育运动队(RR=1 47,p<0.001)。结论:前人研究表明,参加体育活动能带来许多健康效益。对公共卫生工作包括预防肥胖而言,学校体育课可能是一个重要而有效但未被充分利用的对象。要使青少年参加更多的体育活动,就应综合考虑学校体育项目的获得和选择。学校可运用不同策略,促使男生和女生更多地参加体育活动。Keith M. Drake Meghan R. Longacre Todd MacKenzie Linda J. Titus Michael L. Beach Andrew G. Rundle Madeline A. Dalton 2015Journal of Sport and Health Science2015,4,3:3
10Reuse of N95 Masks显示文摘As the C0V1D-19 pandemic enters its second month(April 2020)in the United States,one of the simplest pieces of medical equipment is in desperately short supply:medical-grade protective facemasks,typically engineered and specified for a single use only.Now,to meet the critical and quickly intensifying need,Chinese and American engineers are devising new procedures for decontaminating and reusing masks that hospitals already have on hand(Fig.1)[1].Although some of these procedures require specialized equipment,others are simple enough to use at home(Fig.2)[2,3].Dana Mackenzie 2020Engineering2020,6,6:3
11WONCA研究论文摘要汇编——慢性病管理计划(含职业疗法和理疗)能否减少老年人跌倒的风险?显示文摘背景运动和居家改造是预防跌倒的有效干预措施。慢性病管理(CDM)项目是全科医生开展这些干预措施的途径之一。这些研究的目的是对评估CDM,如职业疗法(OT)和理疗(PT)等对预防跌倒的效果和可行性。方法采用前后测试点研究设计,对在CDM中开展OT和PT分享的5项协同单元及全科医生管理计划进行评价。对干预前后的指标分别进行测量,对两家全科诊所的8例年龄≥75岁患者的转归进行评价。结果干预后2个月,患者的日常功能(P=0.04)、身体功能(P=0.01)及跌伤预防能力(P=0.01)得到了显著改善。患者对干预措施的依从性极佳。讨论在初级卫生保健机构开展跌倒预防干预是有效的,需要持续对干预措施进行推广,以确保有跌倒危险的老年人能从中受益。Mackenzie L Clemson L 周淑新 2014中国全科医学2014,17,21:2
12弹性散射光谱法可准确鉴别Barrett食管的高度不典型增生与癌变Lovat L.B. Johnson K. Mackenzie G.D. 廖新华 2006世界核心医学期刊文摘(胃肠病学分册)2006,0,12:2
13混合性上皮性卵巢癌的形态学及分子学特征显示文摘上皮性卵巢癌(EOC)有5种主要组织学类型:高级别浆液性癌(HGSC)、子宫内膜样癌(EC)、透明细胞癌(CCC)、黏液癌(MC)和低级别浆液性癌(LGSC)。每种类型均可有多种形态学特征,并且1种类型形态学特征可酷似另一种类型,按≥2种明确的组织学特征来定义混合性EOC,Mackenzie R Talhouk A Eshragh S 黄爱清 余英豪 2016临床与实验病理学杂志2016,32,6:2
14Update on mesenchymal stem cell therapies for cartilage disorders显示文摘Cartilage disorders, including focal cartilage lesions, are among the most common clinical problems in orthopedic practice. Left untreated, large focal lesions may result in progression to osteoarthritis, with tremendous impact on the quality of life of affected individuals. Current management strategies have shown only a modest degree of success, while several upcoming interventions signify better outcomes in the future. Among these, stem cell therapies have been suggested as a promising new era for cartilage disorders. Certain characteristics of the stem cells, such as their potential to differentiate but also to support healing made them a fruitful candidate for lesions in cartilage, a tissue with poor healing capacity. The aim of this editorial is to provide an update on the recent advancements in the field of stem cell therapy for the management of focal cartilage defects. Our goal is to present recent basic science advances and to present the potential of the use of stem cells in novel clinical interventions towards enhancement of the treatment armamentarium for cartilage lesions. Furthermore, we highlight some thoughts for the future of cartilage regeneration and repair and to explore future perspectives for the next steps in the field.Nikolaos K Paschos Mackenzie L Sennett 2017World Journal of Orthopedics2017,8,12:2
15Association of homocysteine and smoking with cerebral microemboli in patients with mechanical heart valves:a transcranial Doppler study显示文摘Objectives Microembolic signals(MES)on transcranial Doppler(TCD)predict stroke and cognitive decline.Plasma levels of total homocysteine(tHcy),a prothrombotic factor,are higher in patients with microemboli in carotid stenosis and in patients with paradoxical embolism.In this study we assessed the association between the level of tHcy and the number of MES in patients with mechanical heart valves(MHVs).Methods TCD monitoring was performed to detect MES before and after breathing 100% oxygen and repeated every 2-4 weeks up to six times.results Twenty-five patients with MHVs(mean age:63.60±10.15 years)participated in this study;15 were men(66.47±7.25 years)and 10 were women(59.30±12.60 years).In total,there were 126 study visits.In multiple regression,higher tHcy was associated with more MES in both preoxygenation(OR 1.34(95%CI 1.07 to 1.68,P=0.009))and postoxygenation(OR 1.40(95% CI 1.07 to 1.83,P=0.01))phases.Current smoking and the length of time between the operation and monitoring also correlated with a higher number of MES before and after breathing oxygen,particularly in women.conclusions Higher tHcy and smoking were associated with a higher MES count in both preoxygenation and postoxygenation phases.Because smoking can be stopped and hyperhomocysteinaemia is treatable,these are clinically important findings.Alicia Mattia M Reza Azarpazhooh Claudio Munoz Chrysi Bogiatzi Mackenzie A Quantz J David Spence 2017Stroke & Vascular Neurology2017,2,4:2
16Ecology and Geographical Expansion of Japanese Encephalitis Virus显示文摘Andrew F. van den Hurk Scott A. Ritchie John S. Mackenzie 2009Annual Review of Entomology2009,,:2
17MSH1 Is a Plant Organellar DNA Binding and Thylakoid Protein under Precise Spatial Regulation to Alter Development显示文摘作为新陈代谢的中心,植物细胞器参予维护,防卫,并且发信号。MSH1 是在线粒体和质体涉及 organellar 染色体稳定性的植物特定的蛋白质。MSH1 的质体弄空在开发和 DNA methylation 引起可继承的、非基因的变化。我们从抑制衬里到亚 compartmentalize MSH1 效果的 RNAi 用半互补异种和 transgene 空的 segregants 调查了 msh1 显型。我们证明那 MSH1 表情空间地被调整,明确地在外皮和脉管的实质以内本地化到质体。蛋白质绑 DNA 并且本地化 nucleoids,而是分别和蛋白质蛋白质相互作用数据到质体和 mitochondrial 显示 MSH1 也与 thylakoid 膜联系。在上色,不能生活的压力忍耐,可变生长率,和推迟的成熟的质体 MSH1 弄空结果。从在植物的 7%-10% 的线粒体结果的弄空在叶形态学,热忍耐,和 mitochondrial 染色体稳定性改变了。MSH1 不直接在原子核以内本地化,但是质体弄空在是 MSH1 的可继承的独立人士的 flowering 时间,成熟,和生长率生产非基因的变化。MSH1 弄空在质体和 mitochondrially 改变的线的一个子集改变非光敏的氧化还原作用行为。宫外的表示生产有害效果,加重它的严格的表达式控制。解开 MSH1 效果的复杂性提供卓见进扳机植物特定, transgenerational 改编行为。Kamaldeep S. Virdi Yashitola Wamboldt Hardik Kundariya John D. Laurie Ido Keren K.R. Sunil Kumar Anna Block Gilles Basset Steve Luebker Christian Elowsky Philip M. Day Johnna L. Roose Terry M. Bricker Thomas Elthon Sally A. Mackenzie 2016Molecular Plant2016,9,2:2
18Prokaryotic expression of antibodies显示文摘Mehdi Arbabi-Ghahroudi Jamshid Tanha Roger MacKenzie 2005Cancer and Metastasis Reviews2005,,4:2
19Nanoanalysis of very fine VN precipitates in steel显示文摘M. MacKenzie A.J. Craven C.L. Collins 2005Scripta Materialia2005,,1:2
20Early cellular events in the penumbra of human spontaneous intracerebral hemorrhage显示文摘James Mackintosh Mackenzie Juliet Anne Clayton 1999Journal of Stroke and Cerebrovascular Diseases1999,,1:2
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