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342篇 您的检索式:作者名="Colin R"
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1煤型稀有金属矿床:成因类型、赋存状态和利用评价显示文摘煤和含煤岩系中稀有金属元素的研究,是当今煤地质学研究的热点问题之一。煤和含煤岩系中高度富集并可以开发利用的稀有金属元素包括锂、钪、钛、钒、镓、锗、硒、锆、铌、铪、钽、铀、稀土元素(包括镧系元素和钇)、贵金属元素等。以煤-锗、煤-镓、煤-铀、煤-铌、煤-稀土元素等煤型稀有金属矿床为例,论述了这些矿床的地质成因、赋存状态和利用评价方法。煤型稀有金属矿床的研究,不仅对研究煤层的地质成因、煤层对比、含煤盆地形成与后期改造、区域地质历史演化和突发地质事件可以提供重要的煤地球化学和煤矿物学证据,而且对煤炭经济循环发展、煤炭利用过程中环境保护,以及对国家稀有金属资源安全也具有重要的现实和社会意义。代世峰 任徳贻 周义平 Vladimir VSeredin 李大华 张名泉 James C Hower Colin R Ward 王西勃 赵蕾 宋晓林 2014煤炭学报2014,39,8:111
2导致儿童期肥胖的生命早期危险因素:队列研究显示文摘目的确定早年(3岁以内)导致英国儿童肥胖的危险因素。设计前瞻性队列研究。方法Avon英国父母及儿童纵向调查研究。参与者参与队列研究的8234名年龄为7岁的儿童以及亚组的909名重点儿童,后者需额外提供与早期发育有关并涉及可能导致肥胖的各种资料。诊断标准7岁儿童体重指数≥95百分位确定为肥胖,参考1990年英国人口调查的诊断标准。结果经过最终验证,在假设的25项危险因素中有8项与肥胖有关:父母肥胖(父母双方校正后的相对危险度10.44,95%可信区间5.11~21.32);最早期(43个月内)的体重指数或体重反弹升高(校正后的相对危险度15.00,95%可信区间5.32~42.30);3岁时每周看电视的时间超过8小时(校正后的相对危险度1.55,95%可信区间1.13~2.12);追赶性生长(校正后的相对危险度2.60,95%可信区间1.09~6.16);8个月(校正后的相对危险度3.13,95%可信区间1.43~6.85)和18个月(校正后的相对危险度2.65,95%可信区间1.25~5.59)时体重的标准差值;1岁时体重增加值(校正后的相对危险度1.06,95%可信区间1.02~1.10,体重每增加100g);出生体重,每100g(校正后的相对危险度1.05,95%可信区间1.03~1.07);3岁时睡眠不足(<10.5小时,校正后的相对危险度1.45,95%可信区间1.10~1.89)。结论儿童期肥胖可能与8项危险因素有关。John J Reilly Julie Amstrong Ahmad R Dorosty Pauline M Emmett A Ness I Rogers Colin Steer Andrea Sherriff Children Study Team 冯凯 2005英国医学杂志中文版2005,8,5:8
3选择性环氧化酶2抑制剂和传统非甾体抗炎药增加粥样血栓形成的风险吗?随机试验的荟萃分析显示文摘目的:评价选择性环氧化酶2(COX-2)抑制剂和传统的非甾体类抗炎药(NSMDs)在发生血管事件上的风险性。设计:对已发表和未发表随机试验的表格式资料进行荟萃分析,对传统 NSAIDs 的作用进行间接评估。资料来源:资料分别来源于 Medline 和 Embase(1966年1月至2005年4月);食品与药品管理局记录;以及诺华、辉瑞、默克公司的资料。回顾方法:符合以下条件的随机试验入组本研究:一种选择性 COX-2抑制剂与安慰剂比较或一种选择性 COX-2抑制剂与一种传统的 NSAID之间对比;用药持续时间至少4周;包含严重血管事件方面的信息,如心肌梗死、卒中或由于血管事件死亡。各个独立研究者和药厂为本研究提供了有关随机化的病人数目、血管事件的数目以及每个随机化小组中随访的人时(Person time)等信息。结果:在与安慰剂对比的试验中,选择性COX-2抑制剂使严重血管事件发生率增加42%(1.2%/年比0.9%/年;率比1.42,95%可信区间1.13~1.78;P=0.005);不同的选择性 COX-2抑制剂之间没有显著性差异。这主要归因于心肌梗死的风险增加(0.6%/年比0.3%/年;1.86,1.33~2.59;P=0.0003),在其他血管性事件上没有明显的区别。在为时至少1年的试验中(平均2.7年),血管事件的率比是1.45(1.12~1.89;P=0.005)。总的来说,严重血管事件的发生率在选择性 COX-2抑制剂和任何传统 NSAID 之间没有差异(1.0%/年比0.9%/年;1.16,0.97~1.38;P=0.1)。然而,在选择性 COX-2抑制剂与萘普生对比的试验(1.57,1.21~2.03)和选择性COX-2抑制剂与非萘普生类 NSAIDs 相比较的试验之间(0.88,O.69~1.12),我们发现了统计学差异。与安慰剂比较血管事件的总体比率如下:萘普生0.92(0.67~1.26),布洛芬1.51(0.96~2.37),双氯芬酸1.63(1.12~2.37)。结论:选择性 COX-2抑制剂可以中等度增加血管事件的风险性,大剂量布洛芬和双氯芬酸同样具有此作用,但大剂量萘普生不明显增加血管事件的风险性。Patricia M Kearney Colin Baigent Jon Godwin Heather Halls Jonathan R Emberson Carlo Patrono 徐东(译) 张卓莉(校) 2006英国医学杂志中文版2006,9,5:4
4Colonoscopy quality with Entonox? vs intravenous conscious sedation:18608 colonoscopy retrospective study显示文摘AIM To compare colonoscopy quality with nitrous oxide gas(Entonox?) against intravenous conscious sedation using midazolam plus opioid.METHODS A retrospective analysis was performed on a prospectively held database of 18608 colonoscopies carried out in Lothian health board hospitals between July 2013 and January 2016.The quality of colonoscopies performed with Entonox was compared to intravenous conscious sedation(abbreviated in this article as IVM).Furthermore,the quality of colonoscopies performed with an unmedicated group was compared to IVM.The study used the following key markers of colonoscopy quality:(1) patient comfort scores;(2) caecal intubation rates(CIRs); and (3) polyp detection rates (PDRs).We used binary logistic regression to model the data.RESULTS There was no difference in the rate of moderate-toextreme discomfort between the Entonox and IVM groups (17.9% vs 18.8%; OR = 1.06,95%CI: 0.95-1.18,P = 0.27).Patients in the unmedicated group were less likely to experience moderate-to-extreme discomfort than those in the IVM group(11.4% vs 18.8%; OR = 0.71,95%CI: 0.60-0.83,P < 0.001).There was no difference in caecal intubation between the Entonox and IVM groups(94.4% vs 93.7%; OR = 1.08,95%CI: 0.92-1.28,P = 0.34).There was no difference in caecal intubation between the unmedicated and IVM groups (94.2% vs 93.7%; OR = 0.98,95%CI: 0.79-1.22,P = 0.87).Polyp detection in the Entonox group was not different from IVM group (35.0% vs 33.1%; OR = 1.01,95%CI: 0.93-1.10,P = 0.79).Polyp detection in the unmedicated group was not significantly different from the IVM group (37.4% vs 33.1%; OR = 0.97,95%CI: 0.87-1.08,P = 0.60).CONCLUSION The use of Entonox was not associated with lower colonoscopy quality when compared to intravenous conscious sedation using midazolam plus opioid.Alexander R Robertson Nicholas A Kennedy James A Robertson Nicholas I Church Colin L Noble 2017World Journal of Gastrointestinal Endoscopy2017,9,9:3
5CYP1B1在成年肥胖小鼠巨噬细胞浸润及组织炎症中的作用显示文摘目的探讨CYP1B1(cytochrome P450,family 1,subfamily B,polypeptide 1)缺失对成年小鼠巨噬细胞募集及组织炎症作用。方法选择6 w周龄SPF级CYP1B1基因敲除(KO)和野生型(WT)雄性小鼠,给予低脂肪(LFD)、高脂肪(HFD)饲料,喂养6 w后分别测定各组全血葡萄糖及血清胰岛素水平。利用葡萄糖耐量实验,判断糖耐量损伤情况。HE染色及免疫荧光检测小鼠附睾脂肪组织的巨噬细胞浸润情况。多重实时定量PCR(qRT-PCR)检测附睾脂肪组织及肝脏中巨噬细胞特异性蛋白(Emr1)及肿瘤坏死因子α(TNF-a)的表达水平。结果 CYP1B1敲除可以改善高脂膳食导致的胰岛素敏感性下降;在附睾脂肪组织中,CYP1B1基因缺失与高脂肪膳食均促进巨噬细胞的募集,但CYP1B1缺失抑制高脂膳食对炎症因子的诱导;在肝脏组织中,高脂膳食诱导巨噬细胞的浸润,但CYP1B1基因缺失抑制小鼠巨噬细胞浸润并下调组织炎症因子的表达。结论 CYP1B1基因缺失对高脂膳食诱导的肥胖及相关的胰岛素敏感性下降的保护作用可能是由其对炎症抑制的组织特异性决定的。赵丽华 刘小聪 冯婧 Colin R Jefcoate 王素青 2012营养学报2012,34,3:3
6Posterolateral dislocation of the knee:Recognizing an uncommon entity显示文摘Posterolateral dislocations of the knee are rare injuries.Early recognition and emergent open reduction is crucial.A 48-year-old Caucasian male presented with right knee pain and limb swelling 3 d after sustaining a twisting injury in the bathroom.Examination revealed the pathognomonic anteromedial 'pucker' sign.Anklebrachial indices were greater than 1.0 and symmetrical.Radiographs showed a posterolateral dislocation of the right knee.He underwent emergency open reduction without an attempt at closed reduction.Attempts at closed reduction of posterolateral dislocations of the knee are usually impossible because of incarceration of medial soft tissue in the intercondylar notch and may only to delay surgical management and increase the risk of skin necrosis.Magnetic resonance imaging is not crucial in the preoperative period and can lead to delays of up to 24 h.Instead,open reduction should be performed once vascular compromise is excluded.Colin YL Woon Mark R Hutchinson 2016World Journal of Orthopedics2016,7,6:3
7Analysis and significance of mineral matter in coal seams显示文摘Colin R Ward 2002International Journal of Coal Geology2002,,:3
8高铝粉煤灰特性及其合成莫来石的实验研究显示文摘 研究高铝粉煤灰特性并加以高附加值利用,是加快固体废物资源化利用的一个重要方面.实验采用激光粒度分析、XRD、FESEM-EDX等手段,研究了准格尔电厂高铝粉煤灰的物理、化学特性以及粉煤灰的矿物组成.在此基础上按照正交实验的方法,用准格尔电厂高铝粉煤灰直接制备了M50莫来石,并用高铝粉煤灰与少量工业氧化铝混合合成了M60和M70莫来石,所得结论如下:……陈江峰 邵龙义 Colin R Ward 2007矿物岩石地球化学通报2007,26,z1:2
9Evolution of endovascular mechanical thrombectomy for acute ischemic stroke显示文摘Acute ischemic stroke(AIS) is a common medical problem associated with significant morbidity and mortality worldwide. A small proportion of AIS patients meet eligibility criteria for intravenous thrombolysis(IVT) with recombinant tissue plasminogen activator, and its efficacy for large vessel occlusion is poor. Therefore, an increasing number of patients with AIS are being treated with endovascular mechanical thrombectomy when IVT is ineffective or contraindicated. Rapid advancement in catheter-based and endovascular device technology has led to significant improvements in rates of cerebral reperfusion with these devices. Stentrievers and modern aspiration catheters have now surpassed earlier generation devices in the degree and rapidity of revascularization. This progress has been achieved with no concurrent increase in risk of major complications or mortality, both when used alone or in combination with IVT. The initial randomized controlled trials comparing endovascular therapy to IVT for AIS failed to show superior outcomes with endovascular treatment, butkey limitations of each trial may limit the significance of these results to current practice. While endovascular devices and operator experience continue to evolve, we are optimistic that this will be accompanied by improvements in patient outcomes. This review highlights the major endovascular devices used in current practice and the trials which have investigated their efficacy.Colin J Przybylowski Dale Ding Robert M Starke Christopher R Durst R Webster Crowley Kenneth C Liu 2014World Journal of Clinical Cases2014,2,11:2
10Global prevalence of dementia: a Delphi consensus study显示文摘Cleusa P Ferri Martin Prince Carol Brayne Henry Brodaty Laura Fratiglioni Mary Ganguli Kathleen Hall Kazuo Hasegawa Hugh Hendrie Yueqin Huang Anthony Jorm Colin Mathers Paulo R Menezes Elizabeth Rimmer Marcia Scazufca 2005The Lancet2005,,9503:2
11Global prevalence of dementia: a Delphi consensus study显示文摘Cleusa P Ferri Martin Prince Carol Brayne Henry Brodaty Laura Fratiglioni Mary Ganguli Kathleen Hall Kazuo Hasegawa Hugh Hendrie Yueqin Huang Anthony Jorm Colin Mathers Paulo R Menezes Elizabeth Rimmer Marcia Scazufca 2005The Lancet . 2005 (9503)2005,,9503:2
12The intangible assets of the Internet of Things显示文摘R Colin Johnson 2012Electronic EngineeringTimes2012,,4:1
13Evidence for the adsorption of molecules at special sites located at copper/zinc oxide interfaces (Part 3): Fourier-transform infrared study of methyl formate adsorption on reduced and oxidised Cu/ ZnO/SiO2 catalysts显示文摘Graeme J M Colin H R 1992J Chem Soc Faraday Trans1992,88,23:1
14Survey of background levels of PCDDs and PCDFs in UK soils显示文摘Colin S C Alwyn R F Ameera A H 1989Chemosphere1989,18,16:1
15Offshore wind energy in urope-a yeview of the state-of-the-art 显示文摘ANDREW R HENDERSON COLIN MOEGAN BERNIE SMITH 2003Wind Energy2003,,6:1
16Temkin vacuum electronics high power terahertz sources 显示文摘John H Booske Richard J Dobbs Colin D Joye Carol L Kory George R Neil Gunn-sik Park Jaehun Park Richard J 2011IEEE transactions on terahertz science and technolo- gy2011,1,1:1
17Role of connexin 43in central nervous system injury显示文摘Shenton S C Cameron S J Colin R G 2010Exp Neurol2010,225,2:1
18Low sensitivity of invasive tests for the detection of Helicobacter pylori infection in patients with bleeding ulcer显示文摘Colin R Czernichow P Baty V 2000Gastroenterol Clin Biol2000,24,:1
19Morgan's Compact Mill-Design parameters,applications and operational benefits显示文摘Colin Roy Alfred R Leger David L Pariseau 1982Iron and Steel Engineer1982,,12:1
20Hydrogen rich fuel gas production from the pyrolysis of wet sewage sludge at high temperature显示文摘Murat Dogru Adnan Midilli Colin R Howarth 2002Fuel Processing Technology2002,75,:1
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