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437篇 您的检索式:作者名="Telford"
    题名 作者 年代 出处 被引量
1Biliary brush cytology:Factors associated with positive yields on biliary brush cytology显示文摘AIM: To evaluate the yield of brushing biliary strictures and the factors associated with a positive result in biliary strictures. METHODS: Data on all consecutive patients (01/02 -10/05) who were identified to have a biliary stricture and who underwent biliary brush cytology were collected. The yield of positive biliary brush cytology was evaluated and compared to results with the gold standard for diagnosis (defi ned as either defi nitive surgical histology or clinical course). Additionally,associated factors of positive results including stricture location,gender,age,mass size,length of stricture,and dilatation prior to brushing cytology were assessed. RESULTS: From 199 patients who had brushing cytology samples (10 patients were excluded due to lack of gold standard diagnosis),77 patients had positive brushing cytology (yield 41%). Variables associated with positive cytology brushing on initial endoscopic retrograde cholangiography were age 1.02 (1.00-1.05),mass size > 1 cm 2.22 (1.01-4.89) and length of stricture > 1 cm 3.49 (1.18-10.2). The sensitivity of biliary brushing was 61%,its specifi city 98%,the positive predictive value reached 99%,and the negative predictive value was 57%. CONCLUSION: Our results revealed a 41% positive yield from brushing cytology. The sensitivity of biliary brushing cytology in our center was 61% and the specif icity was 98%. Predictors of positive yield include older age,mass size > 1 cm,and stricture length of > 1 cm.Nasim Mahmoudi Robert Enns Jack Amar Jaber AlAli Eric Lam Jennifer Telford 2008World Journal of Gastroenterology2008,14,4:10
2基于孢粉的古气候参数定量重建:一种新思路及其在中国的应用实例显示文摘传统的孢粉-古气候定量重建评估主要衡量校准集对现代气候状况的模拟结果或化石样品与校准集样品的可比程度,客观上导致特定地点重建气候参数的取舍缺少明确标准.基于国际上通过随机数据开展定量重建显著性检验的新方法,充分利用中国环境梯度大、植被类型丰富、现代表土孢粉数据完善等优势,提出一种孢粉-古气候参数定量重建的新思路:首先确定控制化石孢粉组成变化最主要环境因子,随后通过限制其他环境因子来构造校准集以开展该因子的定量重建,最后完成重建结果显著性评估.将该思路应用于分别位于黄土高原东、西两侧的吕梁山公海和六盘山天池化石孢粉序列,所获得的年降水量P_(ann)定量重建不仅具有统计上的显著性(p<0.001),且相互间在共同时段表现出良好、稳定的相关关系,均指示了约3300cal a BP以来的东亚夏季风降水快速下降,显示其具备降低基于孢粉的古气候参数定量重建不确定性的较大潜力.陈建徽 吕飞亚 黄小忠 H J B Birks R J Telford 张生瑞 许清海 赵艳 王海鹏 周爱锋 黄伟 刘建宝 魏国英 2018中国科学:地球科学2018,48,1:8
3采用辅助燃烧再生的载重汽车用颗粒过滤系统的开发显示文摘2005年起在欧洲实行的载重汽车排放限值标准,将使颗粒过滤器在柴油机排气后处理领域得以应用。然而目前还不能解决在所有车况下颗粒过滤器的再生问题,特别对于运行状态为停停—走走的城市车辆,因其排气温度太低,无法使用被动措施再生颗粒过滤器。此时通过采用一种主动再生系统可能解决上述问题,本文将介绍Zeuna Starker和ArvinMeritor Air Emissions Technologies公司的这种技术。Zelenka P Telford C 廖琪梅 李传友 2003国外内燃机2003,35,3:3
4上海地区24株幽门螺杆菌的vacA基因及cag致病岛状态的研究显示文摘纪徐淮 许国铭 John Telford 屠振兴 丁华 杜奕奇 李兆申 Rino Rappukli 2000中华医学杂志2000,80,11:3
5Does training and experience influence the accuracy of computed tomography colonography interpretation?显示文摘AIM: To evaluate the effect of experience on the accuracy rate of computed tomography colonography(CTC) interpretation and patient preferences/satisfaction for CTC and colonoscopy. METHODS: A prospective, non-randomized, observational study performed in a single, tertiary care center involving 90 adults who underwent CTC followed by colonoscopy on the same day. CTC was interpreted by an abdominal imaging radiologist and then a colonoscopy was performed utilizing segmental un-blinding and re-examination as required. A radiology resident and two gastroenterology(GI) fellows blinded to the results also interpreted the CTC datasets independently. Accuracy rates and trend changes were determined for each reader to assess for a learning curve. RESULTS: Among 90 patients(57% male) aged 55 ± 8.9 years, 39 polyps ≥ 6 mm were detected in 20 patients and 13 polyps > 9 mm in 10 patients. Accuracy rates were 88.9%(≥ 6 mm) and 93.3%(> 9 mm) for the GI Radiologist, 89.8%(≥ 6 mm) and 98.9%(> 9 mm) for the Radiology Resident and 86.7% and 95.6%(≥ 6 mm) and 87.8% and 94.4%(> 9 mm) for each of the GI fellows respectively. The reader's accuracy rate did not change significantly with the percentage change rate ranging between-1.7 to 0.9(P = 0.12 to 0.56). Patients considered colonoscopy more satisfactory than CTC(30% vs 4%, P < 0.0001), they felt less anxiety during colonoscopy(36% vs 7%, P < 0.0001), they experienced less pain or discomfort during colonoscopy compared to CTC(69% vs 4%, P < 0.0001) and colonoscopy was preferred by 77% of the participants as a repeat screening test for the future. CONCLUSION: No statistically significant learning curve was identified in CTC interpretation suggesting that further study is required to identify the necessary training to adequately interpret CTC scans.Greg Rosenfeld Yi Tzu Nancy Fu Brendan Quiney Hong Qian Darin Krygier Jacquie Brown Patrick Vos Pari Tiwari Jennifer Telford Brian Bressler Robert Enns 2014World Journal of Gastroenterology2014,20,6:2
6Apoptosis and Beyond: Cytometry in Studies of Programmed Cell Death显示文摘Donald Wlodkowic William Telford Joanna Skommer Zbigniew Darzynkiewicz 2011Methods in Cell Biology2011,,:2
7随钻储层成像技术显示文摘水平井钻井技术的新突破为一些新远景区的成功钻探以及许多老油气田的挖潜铺平了道路。然而,水平井钻井和大位移井钻井的成功并非由所钻距离来衡量,而是由在多大程度上能够使井保持在储层中钻进来衡量。一种新型的深探测随钻电磁测井服务通过识别流体界面、断层以及井筒外地层的变化,正在帮助地质导向人员最大程度地扩大井筒与储层的接触范围。Oystein Bo Jean-Michel Denichou Uchechukwu Ezioba Ettore Mirto James Donley James Telford Christophe Dupuis Laura Pontarelli Grant Skinner Mauro Viandante Jean Seydoux Matthew Spotkaeff Petter Vikhamar 2016国外测井技术2016,0,1:2
8A randomized trial comparing uncovered and partially covered self-expandable metal stents in the palliation of distal malignant biliary obstruction显示文摘Jennifer J. Telford David L. Carr-Locke Todd H. Baron John M. Poneros Brenna C. Bounds Peter B. Kelsey Robert H. Schapiro Christopher S. Huang David R. Lichtenstein Brian C. Jacobson John R. Saltzman Christopher C. Thompson David G. Forcione Christopher J 2010Gastrointestinal Endoscopy2010,,:2
9The case for bulk metallic glass显示文摘Telford M 2004Mater Today2004,7,3:1
10Effect of helicobacter pylori vacuolating toxin on maturation and extracellular release of procathepsin D and on epidermal growth factor degradation显示文摘Satin B Norais N Telford J 1997J Biol Chem1997,272,25:1
11Anaerobic exercise causes transient changes in leukocyte subsets and IL-2R expression显示文摘A. B. GRAY Y. C. SMART R. D. TELFORD M. J. WEIDEMANN T. K. ROBERTS 1992Medicine & Science in Sports & Exercise1992,,12:1
12The role of ERCP and panereatoscopy in cystic and intraductal tumors显示文摘 Carr-Locke DL 2002Gastrointest Endosc Clin N Am2002,12,4:1
13Pili in Gram-positive pathogens显示文摘Telford JL Barocchi MA Margarit I 2006NatRevMicrobiol2006,4,7:1
14All age-depth modelsare wrong:but how badly?显示文摘Telford R J Heegaard E Birks H J B 2004Quaternary Science Reviews2004,23,:1
15Generation of a monoclonal antibody to a defined portion of the Helicobacter pylori vacuolating cytotoxin by DNA immunization显示文摘Ulivieri C Burroni D Telford J L 1996Biotechnol1996,51,2:1
16Double-gloving:Protecting surgeons from blood contamination in the operating room显示文摘Quebbeman EJ Telford GL Wadsworth K 1992Arch Surg1992,127,2:1
17The role of nutrients,peptide growth factors and co-culture cells in development of preimplantation embtyos in vitro显示文摘Kane M T Ledda S Telford N 1992Theriogenology1992,38,:1
18Diagnosis of babesiosis: evaluation of a serologic test for the detection of Babesia microti antibody 显示文摘Krause PJ Telford SR Ryan R 1994J Infect Dis1994,169,4:1
19Side population analysis using a violet - excited cell - permeable DNA binding dye显示文摘TELFORD W G BRADFORD J GODFREY W 2007Stem Cells2007,25,4:1
20Measuring the yield behaviour of structured fluids显示文摘STOKES J R TELFORD J H 2004J Non-Newtonian-Fluid Mech2004,124,123:1
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