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| 1 | GRADE指南:Ⅲ.证据质量分级显示文摘本文介绍证据质量分级的GRADE方法。GRADE将证据质量分为高、中、低和极低四个级别。该分级应用于证据群,而非针对个别研究。系统评价中,质量反映了我们认为效应估计值正确的把握度。对推荐意见而言,质量反映了我们认为效应估计值足以支持某特定推荐的把握度。随机对照试验初定为高质量证据,观察性研究初定为低质量证据。GRADE中所使用的质量一词不只是意味着偏倚风险,还可能受研究结果的不精确性、不一致性和间接性,及发表偏倚的影响。此外,若干因素可增加我们对效应估计值的把握度。GRADE提供了一种系统方法来思考并报告各因素。GRADE将评估证据质量的过程与给出推荐建议的过程分开。推荐强度的判断不仅依赖于证据质量。 | Howard Balshem Mark Helfanda Holger J.Schunemann Andrew D.Oxman Regina Kunz Jan Brozek Gunn E.Vist Yngve Falck-Ytter Joerg Meerpohl Susan Norris Gordon H.Guyatt GRADE工作组 李幼平 杨晓妍 高霑 | 2011 | 中国循证医学杂志2011,11,4: | 128 |
| 2 | GRADE指南:Ⅶ.证据质量评价--不一致性显示文摘本文针对二分类变量结局指标相对(而非绝对)治疗效果的不一致性。证据本身不会因不同研究结果具有一致性而升级,但可能因不一致而降低质量级别。衡量一致性的标准包括点估计值的相似性、可信区间的重叠程度以及统计学判定标准包括异质性检验和I2。系统评价作者应提出并检验少数几个与患者、干预措施、结局指标以及方法学相关的先验假设以探寻异质性来源。当不一致性很大且无法解释时,因不一致性而降低质量级别是恰当的,特别当某些研究显示有显著益处而其他显示无益甚至有害时(而非仅是疗效大与疗效小的比较)。明显的亚组效应可能不可靠。如果亚组效应满足以下条件,其可信度将会增加:基于少数几个有具体方向的先验假设、亚组比较来自研究内而非研究间、交互检验的P值小、结果有生物学意义。 | Gordon H.Guyatt Andrew D.Oxman Regina Kunz James Woodcock Jan Brozek Mark Helfand Pablo Alonso-Coello Paul Glasziou Roman Jaeschke Elie A.Akl Susan Norris Gunn Vist Philipp Dahm Vijay K.Shukla Julian Higgins Yngve Falck-Ytter Holger J.Schünemann 代表GRADE小组 李幼平 杨晓妍 王莉 蔡羽嘉 陈群飞 | 2011 | 中国循证医学杂志2011,11,12: | 33 |
| 3 | GRADE指南:Ⅷ.证据质量评价--间接性显示文摘直接证据来自直接比较我们关注的干预措施用于我们关注的患者人群,并测量患者重要结局的研究。间接证据可由以下4种方式之一产生。第一,患者可能与我们关注的患者不同(适用性一词常用于这类间接性)。第二,所检验的干预措施可能与我们关注的干预措施不同。有关患者和干预措施间接性的决策取决于对生物或社会因素差异是否大到可能使效应尺度出现预期的较大差异的考虑。第三,结果可能有别于最初设定的结局指标——如替代结果本身不重要,但测量之是基于替代结果的变化反映患者重要结局变化这一假设。第四类间接性在概念上与前三类不同,发生于临床医生必须在未经直接比较的两种干预措施间做出选择时。这种情况下比较治疗方案需要特定的统计方法,并根据患者人群、联合干预措施、结局测量指标及备选干预措施试验方法的差异程度,将证据级别降低1或2级。 | Gordon Guyatt Andrew D.Oxman Regina Kunz James Woodcock Jan Brozek Mark Helfand Pablo Alonso-Coello Yngve Falck-Ytter Roman Jaeschke Gunn Vist Elie A.Akl Piet N Post Susan Norris Joerg Meerpohl Mona Nasser 代表GRADE工作组 李幼平 杨晓妍 李鸿浩 | 2011 | 中国循证医学杂志2011,11,12: | 30 |
| 4 | 北京市部分餐厅和酒吧烟草烟雾及影响因素调查显示文摘目的了解北京市餐厅采取控烟措施的现况和实行禁烟措施对减少室内烟草烟雾浓度的效果。方法电话调查部分餐厅和酒吧采取的各种禁烟措施情况,采用AM510型个人智能防爆粉尘检测仪对室内外细颗粒物PM_(2.5)的浓度进行检测,分析不同禁烟措施和不同类别餐厅烟草烟雾浓度以及室内外细颗粒物浓度差是否存在差异。结果在抽取调查92家的餐厅、酒吧中,采取完全禁烟和部分禁烟措施的占27.9%。92家的室内细颗粒物平均浓度达到253.08μg/m^3,比室外的高102.37%;有禁烟规定的餐厅和酒吧室内外细颗粒物浓度分别是93.10μg/m^3和110.33μg/m^3,无禁烟规定的餐厅、酒吧室内外细颗粒物浓度分别是289.34μg/m^3和128.40μg/m^3,不同类型餐厅、酒吧室内外细颗粒物浓度分别是413.46μg/m^3和190.62μg/m^3,西式快餐厅室内外细颗粒物浓度分别是83.86μg/m^3和104.77μg/m^3,不同档次的餐厅中,室外细颗粒物浓度均比室内低。所调查餐厅、酒吧的室内细颗粒物浓度与单位体积吸烟人数呈显著正相关。结论餐厅内采取禁烟措施能有效减少环境烟草烟雾污染。 | 康纪明 姜垣 林晓光 杨焱 南奕 李竹 刘瑞玲 冯国泽 魏小帅 Mark J.Travers 李强 Andrew Hyland | 2007 | 中华流行病学杂志2007,28,8: | 25 |
| 5 | 全髋关节置换术后血栓预防 使用便携式加压器或低分子量肝素的前瞻性随机对照研究显示文摘背景:血栓栓塞性疾病是全髋关节置换术后常见的并发症。本研究的目的在于比较新型便携式加压器与低分子量肝素在静脉血栓预防中的安全性和有效性。方法:全髋置换患者随机接受为期10d便携式加压器或者低分子量肝素预防治疗。术中开始使用加压器,并且这组患者在术后日服81mg的阿司匹林。使用肝素者,术后12-24h开始注射低分子量肝素。在10-12d后,所有患者行多普勒超声筛查双下肢小腿、大腿部深静脉血栓;有肺栓塞临床症状的患者均接受肺部螺旋CT扫描评价。记录两组出血和于预性治疗情况(即:依从性)。术后12周进行深静脉血栓和肺栓塞证据的临床评估。结果:410例患者(414髋)进行随机化分组;392例患者(395髋)进行手术安全性评估,386例(389髋)治疗结果有效。两组间的一般临床情况无差异。加压组严重出血发生率O%,低分子量肝素组6%。加压组远端和近端深静脉血栓发生率分别为3%、2%,肝素组3%、1%。肺栓塞发生率加压组1%,肝素组1%,无致命性肺栓塞。随访12周,1例加压组患者出现两项事件(深静脉血栓和肺栓塞),该患者术后第12天多普勒超声检查阴性。在静脉血栓栓塞预防上两组比较无明显差异。结论:全髋置换术后静脉血栓栓塞预防,便携式加压器与低分子量肝素比较,可明显减少严重出血。 | CliffordW. Colwell Jr. Mark I. Froimson Michael A.Mont Merrill A. Ritter Robert T. Trousdale Knute C. Buehler Andrew Spitzer Thomas K. Donaldson Douglas E. Padgett 勘武生(译) | 2010 | 中华骨科杂志2010,30,6: | 24 |
| 6 | Surviving Sepsis Campaign: International Guidelines for Management of Severe Sepsis and Septic Shock: 2012显示文摘 | R. Phillip Dellinger Mitchell M. Levy Andrew Rhodes Djillali Annane Herwig Gerlach Steven M. Opal Jonathan E. Sevransky Charles L. Sprung Ivor S. Douglas Roman Jaeschke Tiffany M. Osborn Mark E. Nunnally Sean R. Townsend Konrad Reinhart Ruth M. Kleinpell | 2013 | Critical Care Medicine2013,,2: | 12 |
| 7 | Proposal of a computed tomography classification for hepatic alveolar echinococcosis显示文摘AIM: To establish a computed tomography(CT)-morphological classification for hepatic alveolar echinococcosis was the aim of the study. METHODS: The CT morphology of hepatic lesions in 228 patients with confirmed alveolar echinococcosis(AE) drawn from the Echinococcus Databank of the University Hospital of Ulm was reviewed retrospectively. For this reason, CT datasets of combined positron emission tomography(PET)-CT examinations were evaluated. The diagnosis of AE was made in patientswith unequivocal seropositivity; positive histological findings following diagnostic puncture or partial resection of the liver; and/or findings typical for AE at either ultrasonography, CT, magnetic resonance imaging or PET-CT. The CT-morphological findings were grouped into the new classification scheme.RESULTS: Within the classification a lesion was dedicated to one out of five 'primary morphologies' as well as to one out of six 'patterns of calcification'. 'primary morphology' and 'pattern of calcification' are primarily focussed on separately from each other and combined, whereas the 'primary morphology' V is not further characterized by a 'pattern of calcification'. Based on the five primary morphologies, further descriptive sub-criteria were appended to types Ⅰ-Ⅲ. An analysis of the calcification pattern in relation to the primary morphology revealed the exclusive association of the central calcification with type Ⅳ primary morphology. Similarly, certain calcification patterns exhibited a clear predominance for other primary morphologies, which underscores the delimitation of the individual primary morphological types from each other. These relationships in terms of calcification patterns extend into the primary morphological sub-criteria, demonstrating the clear subordination of those criteria.CONCLUSION: The proposed CT-morphological classification(EMUC-CT) is intended to facilitate the recognition and interpretation of lesions in hepatic alveolar echinococcosis. This could help to interpret different clinical courses better and shall assist in the context of scientific studies to improve the comparability of CT findings. | Tilmann Graeter Wolfgang Kratzer Suemeyra Oeztuerk Mark Martin Haenle Richard Andrew Mason Andreas Hillenbrand Thomas Kull Thomas F Barth Peter Kern Beate Gruener | 2016 | World Journal of Gastroenterology2016,22,13: | 10 |
| 8 | Current Status and Future Challenges of Weather Radar Polarimetry: Bridging the Gap between Radar Meteorology/Hydrology/Engineering and Numerical Weather Prediction显示文摘After decades of research and development, the WSR-88 D(NEXRAD) network in the United States was upgraded with dual-polarization capability, providing polarimetric radar data(PRD) that have the potential to improve weather observations,quantification, forecasting, and warnings. The weather radar networks in China and other countries are also being upgraded with dual-polarization capability. Now, with radar polarimetry technology having matured, and PRD available both nationally and globally, it is important to understand the current status and future challenges and opportunities. The potential impact of PRD has been limited by their oftentimes subjective and empirical use. More importantly, the community has not begun to regularly derive from PRD the state parameters, such as water mixing ratios and number concentrations, used in numerical weather prediction(NWP) models.In this review, we summarize the current status of weather radar polarimetry, discuss the issues and limitations of PRD usage, and explore potential approaches to more efficiently use PRD for quantitative precipitation estimation and forecasting based on statistical retrieval with physical constraints where prior information is used and observation error is included. This approach aligns the observation-based retrievals favored by the radar meteorology community with the model-based analysis of the NWP community. We also examine the challenges and opportunities of polarimetric phased array radar research and development for future weather observation. | Guifu ZHANG Vivek N.MAHALE Bryan J.PUTNAM Youcun QI Qing CAO ANDrew D.BYRD Petar BUKOVCIC Dusan S.ZRNIC Jidong GAO Ming XUE Youngsun JUNG Heather D.REEVES Pamela L.HEINSELMAN AlexANDer RYZHKOV Robert D.PALMER Pengfei ZHANG Mark WEBER Greg M.MCFARQUHAR Berrien MOORE III Yan ZHANG Jian ZHANG J.VIVEKANANDAN Yasser AL-RASHID Richard L.ICE Daniel S.BERKOWITZ Chong-chi TONG Caleb FULTON Richard J.DOVIAK | 2019 | Advances in Atmospheric Sciences2019,36,6: | 9 |
| 9 | Surviving Sepsis Campaign: International Guidelines for Management of Severe Sepsis and Septic Shock, 2012显示文摘 | R. P. Dellinger Mitchell M. Levy Andrew Rhodes Djillali Annane Herwig Gerlach Steven M. Opal Jonathan E. Sevransky Charles L. Sprung Ivor S. Douglas Roman Jaeschke Tiffany M. Osborn Mark E. Nunnally Sean R. Townsend Konrad Reinhart Ruth M. Kleinpell Derek | 2013 | Intensive Care Medicine2013,,2: | 7 |
| 10 | Interleukin-28B Polymorphism Improves Viral Kinetics and Is the Strongest Pretreatment Predictor of Sustained Virologic Response in Genotype 1 Hepatitis C Virus显示文摘 | Alexander J. Thompson Andrew J. Muir Mark S. Sulkowski Dongliang Ge Jacques Fellay Kevin V. Shianna Thomas Urban Nezam H. Afdhal Ira M. Jacobson Rafael Esteban Fred Poordad Eric J. Lawitz Jonathan McCone Mitchell L. Shiffman Greg W. Galler William M. Lee | 2010 | Gastroenterology2010,,1: | 7 |
| 11 | Anti-tumour necrosis factor agent and liver injury:literature review,recommendations for management显示文摘Abnormalities in liver function tests,including transient and self-limiting hypertransaminasemia,cholestatic disease and hepatitis,can develop during treatment with anti-tumour-necrosis-factor(TNF)therapy.The optimal management of liver injury related to antiTNF therapy is still a matter of debate.Although some authors recommend discontinuing treatment in case of both a rise of alanine aminotransferase more than5 times the upper limit of normal,or the occurrence of jaundice,there are no standard guidelines for the management of anti-TNF-related liver injury.Bibliographical searches were performed in Pub Med,using the following key words:inflammatory bowel disease(IBD);TNF inhibitors;hypertransaminasemia;drugrelated liver injury;infliximab.According to published data,elevation of transaminases in patients with IBD treated with anti-TNF is a common finding,but resolution appears to be the usual outcome.Anti-TNF agents seem to be safe with a low risk of causing severe drugrelated liver injury.According to our centre experience,we found that hypertransaminasemia was a common,mainly self-limiting finding in our IBD cohort and was not correlated to infliximab treatment on both univariate and multivariate analyses.An algorithm for the management of liver impairment occurring during antiTNF treatment is also proposed and this highlights the need of a multidisciplinary approach and suggests liver biopsy as a key-point in the management decision in case of severe rise of transaminases.However,hepatic injury is generally self-limiting and drug withdrawal seems to be an exception. | Roberta Elisa Rossi Ioanna Parisi Edward John Despott Andrew Kenneth Burroughs James O'Beirne Dario Conte Mark Ian Hamilton Charles Daniel Murray | 2014 | World Journal of Gastroenterology2014,20,46: | 7 |
| 12 | The serrated pathway to colorectal carcinoma: current concepts and challenges显示文摘 | Mark Bettington Neal Walker Andrew Clouston Ian Brown Barbara Leggett Vicki Whitehall | 2013 | Histopathology2013,,3: | 6 |
| 13 | Hepatobiliary complications of alveolar echinococcosis: A long-term follow-up study显示文摘AIM:To determine the long-term hepatobiliary complications of alveolar echinococcosis(AE) and treatment options using interventional methods.METHODS:Included in the study were 35 patients with AE enrolled in the Echinococcus Multilocularis Data Bank of the University Hospital of Ulm.Patients underwent endoscopic intervention for treatment of hepatobiliary complications between 1979 and 2012.Patients' epidemiologic data, clinical symptoms, and indications for the intervention, the type of intervention and any additional procedures, hepatic laboratory parameters(pre- and post-intervention), medication and surgical treatment(pre- and post-intervention), as well as complications associated with the intervention and patients‘ subsequent clinical courses were analyzed.In order to compare patients with AE with and without history of intervention, data from an additional 322 patients with AE who had not experienced hepatobiliary complications and had not undergone endoscopic intervention were retrieved and analyzed.RESULTS:Included in the study were 22 male and 13 female patients whose average age at first diagnosis was 48.1 years and 52.7 years at the time of intervention.The average time elapsed between first diagnosis and onset of hepatobiliary complications was 3.7 years.The most common symptoms were jaundice, abdominal pains, and weight loss.Thenumber of interventions per patient ranged from one to ten.Endoscopic retrograde cholangiopancreatography(ERCP)was most frequently performed in combination with stent placement(82.9%),followed by percutaneous transhepatic cholangiodrainage(31.4%)and ERCP without stent placement(22.9%).In 14.3%of cases,magnetic resonance cholangiopancreatography was performed.A total of eight patients received a biliary stent.A comparison of biochemical hepatic function parameters at first diagnosis between patients who had or had not undergone intervention revealed that these were significantly elevated in six patients who had undergone intervention.Complications(cholangitis,pancreatitis)occurred in six patients during and in 12patients following the intervention.The average survival following onset of hepatobiliary complications was 8.8years.CONCLUSION:Hepatobiliary complications occur in about 10%of patients.A significant increase in hepatic transaminase concentrations facilitates the diagnosis.Interventional methods represent viable management options. | Tilmann Graeter Franziska Ehing Suemeyra Oeztuerk Richard Andrew Mason Mark Martin Haenle Wolfgang Kratzer Thomas Seufferlein Beate Gruener | 2015 | World Journal of Gastroenterology2015,21,16: | 6 |
| 14 | Predicting defect behavior in B2 intermetallics by merging ab initio modeling and machine learning显示文摘We present a combination of machine learning and high throughput calculations to predict the points defects behavior in binary intermetallic(A–B)compounds,using as an example systems with the cubic B2 crystal structure(with equiatomic AB stoichiometry).To the best of our knowledge,this work is the first application of machine learning-models for point defect properties.High throughput first principles density functional calculations have been employed to compute intrinsic point defect energies in 100 B2 intermetallic compounds.The systems are classified into two groups:(i)those for which the intrinsic defects are antisites for both A and B rich compositions,and(ii)those for which vacancies are the dominant defect for either or both composition ranges.The data was analyzed by machine learning-techniques using decision tree,and full and reduced multiple additive regression tree(MART)models.Among these three schemes,a reduced MART(r-MART)model using six descriptors(formation energy,minimum and difference of electron densities at the Wigner–Seitz cell boundary,atomic radius difference,maximal atomic number and maximal electronegativity)presents the highest fit(98%)and predictive(75%)accuracy.This model is used to predict the defect behavior of other B2 compounds,and it is found that 45%of the compounds considered feature vacancies as dominant defects for either A or B rich compositions(or both).The ability to predict dominant defect types is important for the modeling of thermodynamic and kinetic properties of intermetallic compounds,and the present results illustrate how this information can be derived using modern tools combining high throughput calculations and data analytics. | Bharat Medasani Anthony Gamst Hong Ding Wei Chen Kristin A Persson Mark Asta Andrew Canning Maciej Haranczyk | 2016 | npj Computational Materials2016,,1: | 6 |
| 15 | Direct laser writing of volumetric gradient index lenses and waveguides显示文摘Direct laser writing(DLW)has been shown to render 3D polymeric optical components,including lenses,beam expanders,and mirrors,with submicrometer precision.However,these printed structures are limited to the refractive index and dispersive properties of the photopolymer.Here,we present the subsurface controllable refractive index via beam exposure(SCRIBE)method,a lithographic approach that enables the tuning of the refractive index over a range of greater than 0.3 by performing DLW inside photoresist-filled nanoporous silicon and silica scaffolds.Adjusting the laser exposure during printing enables 3D submicron control of the polymer infilling and thus the refractive index and chromatic dispersion.Combining SCRIBE’s unprecedented index range and 3D writing accuracy has realized the world’s smallest(15μm diameter)spherical Luneburg lens operating at visible wavelengths.SCRIBE’s ability to tune the chromatic dispersion alongside the refractive index was leveraged to render achromatic doublets in a single printing step,eliminating the need for multiple photoresins and writing sequences.SCRIBE also has the potential to form multicomponent optics by cascading optical elements within a scaffold.As a demonstration,stacked focusing structures that generate photonic nanojets were fabricated inside porous silicon.Finally,an all-pass ring resonator was coupled to a subsurface 3D waveguide.The measured quality factor of 4600 at 1550 nm suggests the possibility of compact photonic systems with optical interconnects that traverse multiple planes.SCRIBE is uniquely suited for constructing such photonic integrated circuits due to its ability to integrate multiple optical components,including lenses and waveguides,without additional printed supports. | Christian R.Ocier Corey A.Richards Daniel A.Bacon-Brown Qing Ding Raman Kumar Tanner J.Garcia Jorik van de Groep Jung-Hwan Song Austin J.Cyphersmith Andrew Rhode Andrea N.Perry Alexander J.Littlefield Jinlong Zhu Dajie Xie Haibo Gao Jonah F.Messinger Mark L.Brongersma Kimani C.Toussaint Jr Lynford L.Goddard Paul V.Braun | 2020 | Light(Science & Applications)2020,9,1: | 6 |
| 16 | Is cardiac resynchronisation therapy feasible, safe and beneficial in the very elderly?显示文摘ObjectiveTo evaluate 心脏的同一时刻治疗(CRT ) 培植是否与经历 CRT 培植的 symptoms.MethodsConsecutive 病人一起在 octogenarians 和协会可行、安全,从二个英国中心被招募。根据年龄组织的病人:<80 &≥80 年。基线人口分布,复杂并发症和结果在 439 个病人的那些 groups.ResultsA 总数之间被比较在这研究, 26%≥ 是谁被包括;80 年。Octogenarians 更经常与心脏的同一时刻治疗使用高压脉冲来消减心脏相比收到了心脏的再同步治疗心律调整器。从心律调整器的升级在两个组是普通的(16%<80 年对 22%≥80 年, P = NS ) 。合作病态在两个组是同样普通的(全面糖尿病:25% , atrial 纤维性颤动:23% ,高血压:45%) 。更耐心的年龄 ≥80 年有重要的长期的肾疾病(CKD,估计的 glomerular 过滤率 <45 mL/min 每 1.73 m 2,44% 对 22% , P <0.01 ) 。全面复杂并发症率(任何东西) 在两个组是类似的(16% 对 17% , P = NS ) 。两个组表明了征兆的利益。一个年死亡率作为与更年轻的队相比是在 octogenarians 更大的几乎四褶层(13.9% 对 3.7% , P <0.01 ).ConclusionsCRT 看起来安全在尽管有广泛的合作病态老、特别地经常严重 CKD。征兆的改进看起来有意义。增加的策略是 CRT 的潜在的候选人的有 CHF 的老病人的适当鉴定被要求。 | Bartosz Olechowski Rebecca Sands Donah Zachariah Neil P Andrews Richard Balasubramaniam Mark Sopher John Paisey Paul R Kalra | 2015 | Journal of Geriatric Cardiology2015,12,5: | 5 |
| 17 | A history of high-power laser research and development in the United Kingdom显示文摘The first demonstration of laser action in ruby was made in 1960 by T.H.Maiman of Hughes Research Laboratories,USA.Many laboratories worldwide began the search for lasers using different materials,operating at different wavelengths.In the UK,academia,industry and the central laboratories took up the challenge from the earliest days to develop these systems for a broad range of applications.This historical review looks at the contribution the UK has made to the advancement of the technology,the development of systems and components and their exploitation over the last 60 years. | Colin N.Danson Malcolm White John R.M.Barr Thomas Bett Peter Blyth David Bowley Ceri Brenner Robert J.Collins Neal Croxford A.E.Bucker Dangor Laurence Devereux Peter E.Dyer Anthony Dymoke-Bradshaw Christopher B.Edwards Paul Ewart Allister I.Ferguson John M.Girkin Denis R.Hall David C.Hanna Wayne Harris David I.Hillier Christopher J.Hooker Simon M.Hooker Nicholas Hopps Janet Hull David Hunt Dino A.Jaroszynski Mark Kempenaars Helmut Kessler Sir Peter L.Knight Steve Knight Adrian Knowles Ciaran L.S.Lewis Ken S.Lipton Abby Littlechild John Littlechild Peter Maggs Graeme P.A.Malcolm OBE Stuart P.D.Mangles William Martin Paul McKenna Richard O.Moore Clive Morrison Zulfikar Najmudin David Neely Geoff H.C.New Michael J.Norman Ted Paine Anthony W.Parker Rory R.Penman Geoff J.Pert Chris Pietraszewski Andrew Randewich Nadeem H.Rizvi Nigel Seddon MBE Zheng-Ming Sheng David Slater Roland A.Smith Christopher Spindloe Roy Taylor Gary Thomas John W.G.Tisch Justin S.Wark Colin Webb S.Mark Wiggins Dave Willford Trevor Winstone | 2021 | High Power Laser Science and Engineering2021,9,2: | 5 |
| 18 | SuperDARN CUTLASS Finland radar observations of high-latitude magnetic reconnections under northward interplanetary magnetic field (IMF) conditions显示文摘A number of backscatter power enhancement events with 'equatorward-moving radar auroral forms' in the high-latitude ionosphere were observed by SuperDARN CUTLASS Finland radar when the IMF was northward during 09:00 -10:00 UT on 26 March 2004. These events were also associated with sunward flow enhancements at each location in the Northern Hemisphere which were shown in ionospheric convections measured by the SuperDARN radars. These are typical features of high-latitude (lobe) magnetic reconnections. The durations of the velocity enhancements imply that the evolution time of the lobe reconnections is about 8-16 min from their origin at the reconnection site to their addition to the magnetotail lobe again. In additional, the Double Star TC-1 spacecraft was moving from magnetosheath into magnetosphere, and crossing the magnetopause near the subsolar region during this interval, and observed typical low-latitude magnetic reconnection signatures. This infers that the dayside high- and low-latitude reconnections may occur simultaneously. | ZHANG QingHe LIU RuiYuan YANG HuiGen HU HongQiao ZHANG BeiChen DUNLOP Malcolm LESTER Mark BOGDANOVA Yulia WALSH Andrew | 2012 | Science China(Technological Sciences)2012,55,5: | 5 |
| 19 | A High-Throughput Phenotyping System Using Machine Vision to Quantify Severity of Grapevine Powdery Mildew显示文摘Powdery mildews present specific challenges to phenotyping systems that are based on imaging.Having previously developed lowthroughput,quantitative microscopy approaches for phenotyping resistance to Erysiphe necator on thousands of grape leaf disk samples for genetic analysis,here we developed automated imaging and analysis methods for E.necator severity on leaf disks.By pairing a 46-megapixel CMOS sensor camera,a long-working distance lens providing 3.5×magnification,X-Y sample positioning,and Z-axis focusing movement,the system captured 78%of the area of a 1-cm diameter leaf disk in 3 to 10 focus-stacked images within 13.5 to 26 seconds.Each image pixel represented 1.44 m2 of the leaf disk.A convolutional neural network(CNN)based on GoogLeNet determined the presence or absence of E.necator hyphae in approximately 800 subimages per leaf disk as an assessment of severity,with a training validation accuracy of 94.3%.For an independent image set the CNN was in agreement with human experts for 89.3%to 91.7%of subimages.This live-imaging approach was nondestructive,and a repeated measures time course of infection showed differentiation among susceptible,moderate,and resistant samples.Processing over one thousand samples per day with good accuracy,the system can assess host resistance,chemical or biological efficacy,or other phenotypic responses of grapevine to E.necator.In addition,new CNNs could be readily developed for phenotyping within diverse pathosystems or for diverse traits amenable to leaf disk assays. | Andrew Bierman Tim LaPlumm Lance Cadle-Davidson David Gadoury Dani Martinez Surya Sapkota Mark Rea | 2019 | Plant Phenomics2019,1,1: | 4 |
| 20 | Update on Cardiovascular Implantable Electronic Device Infections and Their Management: A Scientific Statement From the American Heart Association显示文摘 | Larry M. Baddour Andrew E. Epstein Christopher C. Erickson Bradley P. Knight Matthew E. Levison Peter B. Lockhart Frederick A. Masoudi Eric J. Okum Walter R. Wilson Lee B. Beerman Ann F. Bolger N A. Mark Estes Michael Gewitz Jane W. Newburger Eleanor B. S | 2010 | Circulation2010,,3: | 4 |