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477篇 您的检索式:作者名="Johnes P L"
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1Current management of talar osteochondral lesions显示文摘Osteochondral lesions of the talus(OLT) occur in up to 70% of acute ankle sprains and fractures. OLT have become increasingly recognized with the advancements in cartilage-sensitive diagnostic imaging modalities. Although OLT may be treated nonoperatively, a number of surgical techniques have been described for patients whom surgery is indicated. Traditionally, treatment of symptomatic OLT have included either reparative procedures, such as bone marrow stimulation(BMS), or replacement procedures, such as autologous osteochondral transplantation(AOT). Reparative procedures are generally indicated for OLT < 150 mm^2 in area. Replacement strategies are used for large lesions or after failed primary repair procedures. Although shortand medium-term results have been reported, longterm studies on OLT treatment strategies are lacking. Biological augmentation including platelet-rich plasma and concentrated bone marrow aspirate is becoming increasingly popular for the treatment of OLT to enhance the biological environment during healing. In this review, we describe the most up-to-date clinical evidence of surgical outcomes, as well as both the mechanical and biological concerns associated with BMS and AOT. In addition, we will review the recent evidence for biological adjunct therapies that aim to improve outcomes and longevity of both BMS and AOT procedures.Arianna L Gianakos Youichi Yasui Charles P Hannon John G Kennedy 2017World Journal of Orthopedics2017,8,1:23
2Effects of anisotropy on time-depth relation in transversely isotropic medium with a vertical axis of symmetry显示文摘It is known that rock anisotropy can significantly influence the phase and energy velocities of an elastic wave,as well as its reflection/transmission(R/T)coefficients.As a result,it can distort the velocity analysis of seismic-reflection data.In this work we present a velocity analysis for seismic-reflection data based on the available anisotropic rock parameters.We analyzed the created errors on time-depth relation of the seismic-reflection data in neglecting rock anisotropy and/or neglecting the difference between energy velocity and phase velocity,including the case of wide-angle reflection.The calculated results show that the effect of rock anisotropy on time-depth relation of seismic-reflection data is dependent not only on the values of anisotropic parameters,but also on the space arrangement of both source and receiver-array.For all studied cases(weak,moderate or strong anisotropy),we found that the effect of rock anisotropy on time-depth relation could not be neglected.Nevertheless,for the case of weak anisotropy,the energy velocity may be replaceable by the phase velocity to obtain a very good approximation on time-depth relation.Consequently,the seismic-reflection data processing algorithm for numerical computations can be simplified.FA Lin CASTAGNA John P ZENG ZhengWen BROWN Ray L ZHAO MeiShan 2010Chinese Science Bulletin2010,55,21:9
3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
4Liver Transplantation for Nonresectable Liver Metastases From Colorectal Cancer显示文摘Morten Hagness Aksel Foss P?l-Dag Line Tim Scholz P?l Foyn J?rgensen Bjarte Fosby Kirsten Muri Boberg ?ystein Mathisen Ivar P. Gladhaug Tor Skatvedt Egge Steinar Solberg John Hausken Svein Dueland 2013Annals of Surgery2013,,5:4
5Th1 cytokines promote T-cell binding to antigen-presenting cells via enhanced hyaluronan production and accumulation at the immune synapse显示文摘Hyaluronan(HA)production by dendritic cells(DCs)is known to promote antigen presentation and to augment T-cell activation and proliferation.We hypothesized that pericellular HA can function as intercellular‘glue’directly mediating T cell–DC binding.Using primary human cells,we observed HA-dependent binding between T cells and DCs,which was abrogated upon pre-treatment of the DCs with 4-methylumbelliferone(4-MU),an agent which blocks HA synthesis.Furthermore,T cells regulate HA production by DCs via T cell-derived cytokines in a T helper(Th)subset-specific manner,as demonstrated by the observation that cell-culture supernatants from Th1 but not Th2 clones promote HA production.Similar effects were seen upon the addition of exogenous Th1 cytokines,IL-2,interferon c(IFN-c)and tumor necrosis factor a(TNF-a).The critical factors which determined the extent of DC–T cell binding in this system were the nature of the pre-treatment the DCs received and their capacity to synthesize HA,as T-cell clones which were pre-treated with monensin,added to block cytokine secretion,bound equivalently irrespective of their Th subset.These data support the existence of a feedforward loop wherein T-cell cytokines influence DC production of HA,which in turn affects the extent of DC–T cell binding.We also document the presence of focal deposits of HA at the immune synapse between T-cells and APC and on dendritic processes thought to be important in antigen presentation.These data point to a pivotal role for HA in DC–T cell interactions at the IS.Paul L Bollyky Stephen P Evanko Rebecca P Wu Susan Potter-Perigo S Alice Long Brian Kinsella Helena Reijonen Kelly Guebtner Brandon Teng Christina K Chan Kathy R Braun John A Gebe Gerald T Nepom Thomas N Wight 2010Cellular & Molecular Immunology2010,7,3:3
6Evaluation of C-reactive protein, an inflammatory marker, and infectious serology as risk factors for coronary artery disease and myocardial infarction显示文摘Jeffrey L Anderson John F Carlquist Joseph B Muhlestein Benjamin D Horne Sidney P Elmer 1998Journal of the American College of Cardiology1998,,1:2
7Gamma irradiation of HIV-1显示文摘Richard A Smith Jesse Ingels John J Lochemes Joseph P Dutkowsky Linda L Pifer 2001Journal of Orthopaedic Research2001,,5:2
8Computer-based land use suitability mapping显示文摘John L Frederic P S 1983The Cartographic Journal1983,10,2:2
9Cardiac resynchronization therapy for the treatment of heart failure in patients with intraventricular conduction delay and malignant ventricular tachyarrhythmias显示文摘Steven L Higgins John D Hummel Imran K Niazi Michael C Giudici Seth J Worley Leslie A Saxon John P Boehmer Michael B Higginbotham Teresa De Marco Elyse Foster Patrick G Yong 2003Journal of the American College of Cardiology2003,,8:2
10Effective primary isolation of wild-type canine distemper virus in MDCK,MV1 Lu and Vero cells without nucleotide sequence changes within the entire haemagglutinin protein gene and in subgenomic sections of the fusion and phospho protein genes显示文摘John A L Thomas P M Michael J K 2004Virology2004,118,:1
11Assessment of erosion haz- ard with the USLE and GIS A ease study of the Upper Ewaso Nglro North basin of Kenya显示文摘Bancy M Mati Royston P C Morgan Francis N Gichuki John N Quinton Tim R Brewer Hans P l iniger 2000lnternation Journal of Applied Earth Ob- servation and Geoinformation2000,2,2:1
12R N A expression of breast cancer resistance protein, lung resistance-related protein, muhidrug resistance-associated protein 1 and 2, and muhidrug resistance gene 1 in breast cancer: correlation with chemo-therapeutic re sponse 显示文摘Herman B John A F Max ime P L 2003Clin Cancer Res2003,2,9:1
13Uncertainty quantification using evidence theory in multidisciplinary design optimization 显示文摘Harish A John E R Evan L P 2004Reliability Engineering and System Safety2004,85,13:1
14l Surveillance for foodborne - disease outbreaks--United States, 1998 - 2002显示文摘Michael L John P RachelW eta 2006MMWR2006,55,10:1
15Effects of drying on flavour compounds in Australian - grown ginger ( Zingiber officinale ) 显示文摘John P and Amanda L 2000Science of Food and Agriculture2000,80,:1
16Estimating aquifer properties by nonlinear least-squares analysis of pump test response显示文摘R A Johns L Senprini P V Roberts 1992Ground water1992,30,1:1
17Increase glutathione hiosynthesis plays a role in nickel tolerance in thlaspi nickel hyperaecumulas显示文摘John L F Michael W P Ken N 2004The Plant Cell2004,16,:1
18Resistance of Rosa microtubule polymerization to colchicines results from a low-affinity interation of colchicine and tubulin显示文摘MORE JOHN L C BUREARU T E TOCCHI L P 1987Planta1987,28,1:1
19An operational system for Generating cloud drift winds in the Australian region and their impaction numerical weather prediction显示文摘John L Neil P Bob S 1994American Meteorology Society1994,9,6:1
20Phytoestrogen intake and endometrial cancer risk 显示文摘HORNROSS P L JOHN E M CANCHOLA A J 2003Natl Cancer2003,95,:1
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