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87篇 您的检索式:作者名="John Collins"
    题名 作者 年代 出处 被引量
1Nature:揭示干细胞惊人异质性显示文摘论文作者George Daley教授说:"这是一项非常基础的研究,但它阐明了多能性状态广泛性。我们捕获了干细胞不同状态的详细分子谱。"研究人员通过采用多种变量如不同的化学物质、培养环境和遗传敲除来扰乱多能干细胞,研究人员探究了它们的发育景观。随后,他们分析了每个细胞的遗传组成,观察了每个细胞多能状态的微小波动。他们发现内部、化学和环境信号影响干细胞方式的许多细微差异,揭示出了复杂的发育调控因子"决策"回路。Roshan M.Kumar Patrick Cahan Alex K.Shalek Rahul Satija A.Jay Daley Keyser Hu Li Jin Zhang Keith Pardee David Gennert John J.Trombetta Thomas C.Ferrante Aviv Regev George Q.Daley James J. Collins 2014岭南现代临床外科2014,14,6:10
2It is safe to use transdermal glyceryl trinitrate to lower blood pressure in patients with acute ischaemic stroke with carotid stenosis显示文摘Background There is concern that blood pressure(BP)lowering in acute stroke may compromise cerebral perfusion and worsen outcome in the presence of carotid stenosis.We assessed the effect of glyceryl trinitrate(GTN)in patients with carotid stenosis using data from the Efficacy of Nitric Oxide in Stroke(ENOS)Trial.Methods ENOS randomised 4011 patients with acute stroke and raised systolic BP(140-220 mm Hg)to transdermal GTN or no GTN within 48 hours of onset.Those on prestroke antihypertensives were also randomised to stop or continue their medication for 7 days.The primary outcome was the modified Rankin Scale(mRS)at day 90.Ipsilateral carotid stenosis was split:<30%;30-<50%;50-<70%;≥70%.Data are ORs with 95%CIs adjusted for baseline prognostic factors.results 2023(60.5%)ischaemic stroke participants had carotid imaging.As compared with<30%,≥70%ipsilateral stenosis was associated with an unfavourable shift in mRS(worse outcome)at 90 days(OR 1.88,95%CI 1.44 to 2.44,p<0.001).Those with≥70%stenosis who received GTN versus no GTN had a favourable shift in mRS(OR 0.56,95%CI 0.34 to 0.93,p=0.024).In those with 50-<70%stenosis,continuing versus stopping prestroke antihypertensives was associated with worse disability,mood,quality of life and cognition at 90 days.Clinical outcomes did not differ across bilateral stenosis groups.Conclusions Following ischaemic stroke,severe ipsilateral carotid stenosis is associated with worse functional outcome at 90 days.GTN appears safe in ipsilateral or bilateral carotid stenosis,and might improve outcome in severe ipsilateral carotid stenosis.Jason P Appleton Lisa J Woodhouse Andrew Belcher Daniel Bereczki Eivind Berge Valeria Caso Hui Meng Chang Hanne K Christensen Ronan Collins John Gommans Ann C Laska George Ntaios Serefnur Ozturk Gillian M Sare Szabolcs Szatmari Yongjun Wang Joanna M Wardlaw Nikola Sprigg Philip M Bath for the ENOS investigators 2019Stroke & Vascular Neurology2019,4,1:6
3A History of Fischer-Tropsch Wax Upgrading at BP-from Catalyst Screening Studies to Full Scale Demonstration in Alaska显示文摘Conversion of Fischer-Tropsch wax into high quality synthetic crude or finished transportation fuels such as premium diesel has been studied over the past 15 years within BP. Catalyst screening and selection was carried out in dedicated micro-reactors and pilot plants, whose designs are critical to the performance selection. Variation in catalyst composition and defining the gas to oil feed ratios with the operating temperature are a few of the parameters studied. Product selection and maximizing diesel yield combined with stability (catalyst life) were the ultimate drivers. The selected catalyst was then tested under commercial conditions in a dedicated 300 barrel per day demonstration plant. The products were also tested in engines to assess their combustion characteristics.John P. Collins Joep J. H. M. Font Freide Barry Nay 2006Journal of Natural Gas Chemistry2006,15,1:5
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
5Genetic Risk Factors for Post-Infectious Irritable Bowel Syndrome Following a Waterborne Outbreak of Gastroenteritis显示文摘Alexandra–Chloé Villani Mathieu Lemire Marroon Thabane Alexandre Belisle Geneviève Geneau Amit X. Garg William F. Clark Paul Moayyedi Stephen M. Collins Denis Franchimont John K. Marshall 2010Gastroenterology2010,,4:4
6Next Generation Transcriptome Sequencing and Quantitative Real-Time PCR Technologies for Characterisation of the Bemisia tabaci Asia 1 mtCOI Phylogenetic Clade显示文摘A programme of functional genomics research is underway at the University of Greenwich,UK,to develop and apply genomics technologies to characterise an economically-important but under-researched Bemisia tabaci(Hemiptera:Aleyrodidae),the Asia 1 mtCOI phylogenetic group.A comparison of this putative species from India with other important B.tabaci populations and insect species may provide targets for the development of more effective whitefly control strategies.As a first step,next-generation sequencing(NGS)has been used to survey the transcriptome of adult female whitefly,with high quality RNA preparations being used to generate cDNA libraries for NGS using the Roche 454 Titanium DNA sequencing platform.Contig assemblies constructed from the resultant sequences(301 094 reads)using the software program CLC Genomics Workbench generated 3 821 core contigs.Comparison of a selection of these contigs with related sequences from other B.tabaci genetic groups has revealed good alignment for some genes(e.g.,HSP90)but misassemblies in other datasets(e.g.,the vitellogenin gene family),highlighting the need for manual curation as well as collaborative international efforts to obtain accurate assemblies from the existing next generation sequence datasets.Nevertheless,data emerging from the NGS has facilitated the development of accurate and reliable methods for analysing gene expression based on quantitative real-time RT-PCR,illustrating the power of this approach to enable rapid expression analyses in an organism for which a complete genome sequence is currently lacking.Susan Seal Mitulkumar V Patel Carl Collins John Colvin David Bailey 2012Journal of Integrative Agriculture2012,11,2:2
7Metals emitted from heavy-duty diesel vehicles equipped with advanced PM and NO X emission controls显示文摘Shaohua Hu Jorn D. Herner Martin Shafer William Robertson James J. Schauer Harry Dwyer John Collins Tao Huai Alberto Ayala 2009Atmospheric Environment2009,,18:2
8Randomized, controlled trial of standard, large-capacity versus jumbo biopsy forceps for polypectomy of small, sessile, colorectal polyps显示文摘Peter V. Draganov Myron N. Chang Ahmad Alkhasawneh Lisa R. Dixon John Lieb Baharak Moshiree Steven Polyak Shahnaz Sultan Dennis Collins Amitabh Suman John F. Valentine Mihir S. Wagh Samir L. Habashi Chris E. Forsmark 2012Gastrointestinal Endoscopy2012,,1:2
9Nitinol Stent Implantation Versus Balloon Angioplasty for Lesions in the Superficial Femoral Artery and Proximal Popliteal Artery: Twelve-Month Results From the RESILIENT Randomized Trial显示文摘John R. Laird Barry T. Katzen Dierk Scheinert Johannes Lammer Jeffrey Carpenter Maurice Buchbinder Rajesh Dave Gary Ansel Alexandra Lansky Ecaterina Cristea Tyrone J. Collins Jeffrey Goldstein Michael R. Jaff 2010Circulation: Cardiovascular Interventions2010,,:2
10Proton Pump Inhibitors Exacerbate NSAID-Induced Small Intestinal Injury by Inducing Dysbiosis显示文摘John L. Wallace Stephanie Syer Emmanuel Denou Giada de Palma Linda Vong Webb McKnight Jennifer Jury Manlio Bolla Premysl Bercik Stephen M. Collins Elena Verdu Ennio Ongini 2011Gastroenterology2011,,:2
11Situated Cognition and the Culture of Learning 显示文摘John Seely Brown Allan Collins & Paul Duguid 1989Educational Researcher1989,18,1:1
12Up-conversion Luminescence of Er3+-doped Yttrium, Scandium, Gallium Garnet at Different Temperatures 显示文摘Chen Xuesheng John Collins DiBartolo B 1997Journal of Luminescence1997,7274,:1
13Long-term effects of continuing adjuvant tamoxifen to 10 years versus stopping at 5 years after diagnosis of oestrogen receptor-positive breast cancer: ATLAS, a randomised trial显示文摘Christina Davies Hongchao Pan Jon Godwin Richard Gray Rodrigo Arriagada Vinod Raina Mirta Abraham Victor Hugo Medeiros Alencar Atef Badran Xavier Bonfill Joan Bradbury Michael Clarke Rory Collins Susan R Davis Antonella Delmestri John F Forbes Peiman Hadd 2012The Lancet2012,,:1
14Fecal Water as a Non-Invasive Biomarker in Nutritional Intervention: Comparison of Preparation Methods and Refinement of Different Endpoints显示文摘Annett Klinder Pernilla C. Karlsson Yvonne Clune Roisin Hughes Michael Glei Joseph J. Rafter Ian Rowland John K. Collins Beatrice L. Pool-Zobel 2007Nutrition and Cancer2007,,2:1
15A study of the role of ion–molecule chemistry in the formation of sporadic sodium layers显示文摘Stephen C. Collins John M.C. Plane Michael C. Kelley Timothy G. Wright Pavel Soldán Timothy J. Kane Andrew J. Gerrard Brent W. Grime Rosie J. Rollason Jonathan S. Friedman Sixto A. González Qihou Zhou Michael P. Sulzer Craig A. Tepley 2002Journal of Atmospheric and Solar-Terrestrial Physics2002,,7:1
16Myeloid Differentiation Primary Response Protein 88 Couples Reverse Cholesterol Transport to Inflammation显示文摘Kathleen A. Smoak Jim J. Aloor Jennifer Madenspacher B. Alex Merrick Jennifer B. Collins Xuewei Zhu Giorgio Cavigiolio Michael N. Oda John S. Parks Michael B. Fessler 2010Cell Metabolism2010,,:1
17Situated cognition and the culture of learning显示文摘John Seely Brown Allan Collins Paul Duguid 0,,01:1
18Design, synthesis and biological evaluation of α-substituted isonipecotic acid benzothiazole analogues as potent bacterial type II topoisomerase inhibitors显示文摘Lorraine C. Axford Piyush K. Agarwal Kelly H. Anderson Laura N. Andrau John Atherall Stephanie Barker James M. Bennett Michael Blair Ian Collins Lloyd G. Czaplewski David T. Davies Carlie T. Gannon Dushyant Kumar Paul Lancett Alastair Logan Christopher J. 2013Bioorganic & Medicinal Chemistry Letters2013,,24:1
19The effect of cash flow forecasts on accrual quality and benchmark beating显示文摘John McInnis Daniel W. Collins 2010Journal of Accounting and Economics2010,,3:1
20Evaluation of galvanic anodes: cathodic protection design for double bottom tanks显示文摘Michael B Surkein John Collins 1996Cathodic & Anodic Protection1996,35,5:1
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