维普中文期刊产品整合服务
2577篇 您的检索式:作者名="Harry P"
    题名 作者 年代 出处 被引量
1由二种烟煤制备碳纳米管的探索性研究显示文摘以一种中国烟煤和一种新西兰烟煤为原料 ,采用电弧等离子体法制备碳纳米管。碳纳米管及其副产物富勒烯烟灰的表征采用扫描电镜 (SEM)和红外光谱 (FT IR)等技术。结果表明 :电弧放电时的缓冲气体压力对碳纳米管的产率影响很大 ;在一定的缓冲气压下电极间电流和电极间距各存在一最佳值。在He气压力为 0 .0 6 6 5MPa、工作电流为 40A条件下进行电弧放电 ,阴极上棒状沉积物的内芯中碳纳米管含量高达 75 %以上。基于实验结果 。邱介山 韩红梅 周颖 胡德生 曾适之 P J F Harris 2001新型炭材料2001,16,4:30
2Endoscopic ultrasound staging for early esophageal cancer: Are we denying patients neoadjuvant chemo-radiation?显示文摘AIM To evaluate the accuracy of endoscopic ultrasound(EUS) in early esophageal cancer(EC) performed in a highvolume tertiary cancer center. METHODS A retrospective review of patients undergoing esophagectomy was performed and patients with c T1 N0 and c T2 N0 esophageal cancer by EUS were evaluated. Patient demographics, tumor characteristics, and treatment were reviewed. EUS staging was compared to surgical pathology to determine accuracy of EUS. Descriptive statistics was used to describe the cohort. Student's t test and Fisher's exact test or χ~2 test was used to compare variables. Logistic regression analysis was used to determine if clinical variables such as tumor location and tumor histology were associated with EUS accuracy.RESULTS Between 2000 and 2015, 139 patients with clinical stage Ⅰ or Ⅱ?A esophageal cancer undergoing esophagectomy were identified. There were 25(18%) female and 114(82%) male patients. The tumor location included the middle third of the esophagus in 11(8%) and lower third and gastroesophageal junction in 128(92%) patients. Ninety-three percent of patients had adenocarcinoma. Preoperative EUS matched the final surgical pathology in 73/139 patients for a concordance rate of 53%. Twenty-nine patients(21%) were under-staged by EUS; of those, 19(14%) had unrecognized nodal disease. Positron emission tomography(PET) was used in addition to EUS for clinical staging in 62/139 patients. Occult nodal disease was only found in 4 of 62 patients(6%) in whom both EUS and PET were negative for nodal involvement. CONCLUSION EUS is less accurate in early EC and endoscopic mucosal resection might be useful in certain settings. The addition of PET to EUS improves staging accuracy.Carrie Luu Marisa Amaral Jason Klapman Cynthia Harris Khaldoun Almhanna Sarah Hoffe Jessica Frakes Jose M Pimiento Jacques P Fontaine 2017World Journal of Gastroenterology2017,23,46:8
3Impact of preoperative chemoradiotherapy on survival in patients with resectable pancreatic cancer显示文摘AIM:To explore whether preoperative chemoradiation therapy improves survival of patients with pancreatic cancer undergoing resectional surgery. METHODS:Forty-seven patients with a malignant pancreatic tumor localized in the head or uncinate process of the pancreas underwent radical pancreaticoduodenectomy. Twenty-two received chemoradiation therapy (gemcitabine and radiation dose 50.4 Gy) before surgery (CRR) and 25 patients underwent surgery only (RO). The study was non-randomised. Patients were identified from a prospective database. RESULTS:The median survival time was 30.2 mo in the CRR group and 35.9 mo in the RO group. No statistically significant differences were found in subclasses according to lymph node involvement,TNM stages,tumor size,or perineural invasion. The one,three and five year survival rates were 81%,33% and 33%,respectively,in the CRR group and 72%,47% and 23%,respectively,in the RO group. In ductal adenocarcinoma,the median survival time was 27 mo in the CRR group and 20 mo in the RO group. No statistically significant differences were found in the above subclasses. The one,three and five year survival rates were 79%,21% and 21%,respectively,in the CRR group and 64%,50% and 14%,respectively,in the RO group. The overall hospital mortality rate was 2%. The morbidity rate was 45% in the CRR group and 32% (NS) in the RO group. CONCLUSION:Major multicenter randomized studies are needed to conclusively assess the impact of neoadjuvant treatment in the management of pancreatic cancer.Plvi Vento Harri Mustonen Timo Joensuu Pivi Krkkinen Eero Kivilaakso Tuula Kiviluoto 2007World Journal of Gastroenterology2007,13,21:8
4针对患者利益的机器学习和人工智能研究:在透明性、可重复性、伦理和有效性等方面的20个关键问题显示文摘机器学习(ML)、人工智能(AI)和其他现代统计方法正为利用先前尚未开发且极速增长的数据资源提供新的机会,以期让患者获益。尽管目前正在进行许多有前景的研究,特别是在图像方面,但就文献整体而言还缺乏透明度、对可重复性清晰的阐述、对潜在伦理问题的探究,以及对有效性的明确验证。这些问题的存在有许多原因,其中最重要的一点(为此我们提供了初步解决方案)就是当前缺乏针对ML和AI的最佳实践指南。我们认为从事研究的跨学科团队和应用ML/AI影响健康的项目,将因解决有关透明度、可重复性、伦理和有效性(TREE)的一系列问题而受益。这里提出的20个关键问题为研究团队提供了一个研究设计、实施和报告框架;帮助编辑和同行评审专家评估文献的贡献;让患者、临床医生和政策制定者评估新发现可能会给患者带来的获益。Sebastian Vollmer Bilal A Mateen Gergo Bohner Franz J Kirdly Rayid Ghani Pall Jonsson Sarah Cumbers Adrian Jonas Katherine S L McAllister Puja Myles David Granger Mark Birse Richard Branson Karel G M Moons Gary S Collins John P A Chris Holmes Harry Hemingwayp 李峰(译) 徐磊(校) 赵邑(校) 2020英国医学杂志中文版2020,23,9:5
5Change in ecosystem service values in the San Antonio area, Texas显示文摘Urs P Kreuter Heather G Harris Marty D Matlock Ronald E Lacey 2001Ecological Economics2001,,3:3
6Methods, units and quality requirements for the analysis of haemoglobin A_(1c) in diabetes mellitus显示文摘The formation of glycohemoglobin, especially the hemoglobin A1c(Hb_(A1c)) fraction, occurs when glucose becomes coupled with the amino acid valine in the β-chain of Hb; this reaction is dependent on the plasma concentration of glucose. Since the early 1970 s it has been known that diabetics display higher values of Hb_(A1c) because they have elevated blood glucose concentrations. Thus Hb_(A1c) has acquired a very important role in the treatment and diagnosis of diabetes mellitus. After the introduction of the first quantitative measurement of Hb_(A1c), numerous methods for glycohemoglobin have been introduced with different assay principles: From a simple minicolumn technique to the very accurate automated highpressure chromatography and lastly to many automated immunochemical or enzymatic assays. In early days, the results of the quality control reports for Hb_(A1c) varied extensively between laboratories, therefore in United States and Canada working groups(WG) of the Diabetes Controls and Complications Trial(DCCT) were set up to standardize the Hb_(A1c) assays against the DCCT/National Glycohemoglobin Standardization Program reference method based on liquid chromatography. In the 1990 s, the International Federation of Clinical Chemistry and Laboratory Medicine(IFCC) appointed a new WG to plan a reference preparation and method for the Hb_(A1c) measurement. When the reference procedureswere established, in 2004 IFCC recommended that all manufacturers for equipment used in Hb_(A1c) assays should calibrate their methods to their proposals. This led to an improvement in the coefficient of variation(CV%) associated with the assay. In this review, we describe the glycation of Hb, methods, standardization of the Hb_(A1c) assays, analytical problems, problems with the units in which Hb_(A1c) values are expressed, reference values, quality control aspects, target requirements for Hb_(A1c), and the relationship of the plasma glucose values to Hb_(A1c) concentrations. We also note that the acceptance of the mmol/mol system for Hb_(A1c) as recommended by IFCC, i.e., the new unit and reference ranges, are becoming only slowly accepted outside of Europe where it seems that expressing Hb_(A1c) values either only in per cent units or with parallel reporting of percent and mmol/mol will continue. We believe that these issues should be resolved in the future and that it would avoid confusion if mmol/mol unit for Hb_(A1c) were to gain worldwide acceptance.Ilkka Penttil? Karri Penttil? P?ivi Holm Harri Laitinen P?ivi Ranta Jukka T?rr?nen Rainer Rauramaa 2016World Journal of Methodology2016,6,2:3
7Telaprevir/boceprevir era: From bench to bed and back显示文摘Hepatitis C virus (HCV) infects approximately 200 million people worldwide. Interferon-based therapies have dominated over the past two decades. However, the overall response rates remain suboptimal. Thanks to the tremendous effort from both academia and industry, two serine protease inhibitors telaprevir and boceprevir for treating chronic hepatitis C have finally reached the clinic. Although these compounds are only approved for combination use with interferon and ribavirin in genotype 1 HCV infected chronic patients, the management of HCV patients however is now evolving incredibly. Here, we overviewed a series of landmark studies, regarding the clinical development of telaprevir and boceprevir. We discussed the mechanism-of-action of telaprevir/boceprevir and their potential application in HCV-positive liver transplantation patients. We further emphasized some emerging concerns with perspective of further development in this field.Maikel P Peppelenbosch Harry LA Janssen Robert J de Knegt 2012World Journal of Gastroenterology2012,18,43:3
8糖尿病患者累积收缩压负荷与心血管病风险的关系显示文摘该研究旨在评估2型糖尿病患者累积收缩压负荷与心血管事件风险的关系。方法:对百普乐和达美康缓释片对糖尿病和血管疾病的对照评估试验的观察性研究(action in diabetes and vascular disease preterax and diamicron MR controlled evaluation post trial observational study, ADVANCE-ON)中的2型糖尿病患者进行事后分析。Wang N Harris K Hamet P Harrap S Mancia G Poulter N Williams B Zoungas S Woodward M Chalmers J Rodgers A 刘青(译) 郑武洪(审校) 2022中华高血压杂志2022,30,12:2
9The high-molecular-weight subunits of glutenin:structure,genetics and relationship to bread-making quality显示文摘Payne P I Harris P A Law C N Holt L M Blackman J A 1980Ann Technol Agric1980,29,2:2
10Change in ecosystem service values in the San Antonio area, Texas显示文摘Urs P Kreuter Heather G Harris Marty D Matlock Ronald E Lacey 2001Ecological Economics2001,,3:2
11The use of an optical outlining system for weekly on-set verification of patients with carcinoma of the breast 显示文摘Michael P Casebow Rachel L Harris Richard J Jarvis 1998Radiotherapy and Oncology1998,46,:2
12A Simple Chemical Method of Opening nad Filling Carbon Nanotubes显示文摘Tsang S C Chen Y K Harris P J F 1994Nature1994,372,1:1
13Primary tracheal non-Hodgkin's lymphoma, a ease report and review of literature 显示文摘Fidias P Wright C Harris NL 1996Cancer1996,77,11:1
14Copper stimulates endoeytosis of the prion protein显示文摘Pauly P C Harris D A 1998J Biol Chem1998,273,33:1
15The value relevance of German accounting measures:An empirical analysis显示文摘Harris M S Moller H P 1994Journal of Accounting Research1994,32,:1
16Thining and opening of carbon nanotubes by oxidation using carbon dioxide 显示文摘Tsang S C Harris P J F Green M L H 1993Nature1993,362,:1
17Tracking fish by airborne radar - fishermen could be the winner显示文摘GRIFFITHS F B LYNE V D HARRIS G P et el 1989Australian Fisheries1989,48,:1
18A simple chemical mehod of opening and filling carbon nanotubes显示文摘TSANG S C CHEN Y K HARRIS P J F 1994Nature1994,372,:1
19A simple and rapid preparation of alditol acetates for monosaccharide analysis显示文摘BLAKENEY A B HARRIS P J HENRY R J 1983Carbohydrate Research1983,113,:1
20Mapping metabolicbrain activation during human volitional swallowing: a posi-tron emission tomography study using fluorodeoxyglucose显示文摘Harris ML July an P Kulkami B 2005J Cereb Blood Flow Metab2005,25,4:1
返回顶部 每页显示:
共129页 首页 上一页 第1页 下一页 末页 /129 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费