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295篇 您的检索式:作者名="Clark LI"
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13D bioactive composite scaffolds for bone tissue engineering显示文摘Bone is the second most commonly transplanted tissue worldwide,with over four million operations using bone grafts or bone substitute materials annually to treat bone defects.However,significant limitations affect current treatment options and clinical demand for bone grafts continues to rise due to conditions such as trauma,cancer,infection and arthritis.Developing bioactive three-dimensional(3D)scaffolds to support bone regeneration has therefore become a key area of focus within bone tissue engineering(BTE).A variety of materials and manufacturing methods including 3D printing have been used to create novel alternatives to traditional bone grafts.However,individual groups of materials including polymers,ceramics and hydrogels have been unable to fully replicate the properties of bone when used alone.Favourable material properties can be combined and bioactivity improved when groups of materials are used together in composite 3D scaffolds.This review will therefore consider the ideal properties of bioactive composite 3D scaffolds and examine recent use of polymers,hydrogels,metals,ceramics and bio-glasses in BTE.Scaffold fabrication methodology,mechanical performance,biocompatibility,bioactivity,and potential clinical translations will be discussed.Gareth Turnbull Jon Clarke Frederic Picard Philip Riches Luanluan Jia Fengxuan Han Bin Li Wenmiao Shu 2018Bioactive Materials2018,3,3:40
2Sperm DNA fragmentation, recurrent implantation failure and recurrent miscarriage显示文摘证据正在增加精子 DNA 的正直可能也与培植失败和周期性的流产(RM ) 有关。调查这,在有在 vitro 授精,与 RM 诊断的 16 个女人和七位最近的父亲(控制) 列在后面的周期性的培植失败(RIF ) 的 35 个女人的搭挡的精子 DNA 破碎被检验。精子由测试和终端 deoxynucleotidyl transferase dUTP 刻痕结束标记的精子染色质分散(SCD )(TUNEL ) 是检验密度前和密度以后的 centrifugation 试金。在在三之间的搭挡或精子集中,活动性或形态学组织的任何一个的年龄没有重要差别。而且,在 DNA 破碎由也测量了的精子没有明显的差别测试。不管多么虽然平均在所有的精子 DNA 破碎组织当由 SCD 测试测量了时,在准备精子是统计上更低的,这没从 TUNEL 试金与结果被看见。这些结果不支持精子 DNA 破碎是 RIF 或 RM 的一个重要原因的假设,否则测试的那精子 DNA 正直在如此的病人有价值。它也在从精子 DNA 破碎测试解释数据加亮测试方法论和精子准备方法之间的重要差别。Carol Coughlan Helen Clarke Rachel Cutting Jane Saxton Sarah Waite William Ledger Tinchiu Li Allan A Pacey 2015Asian Journal of Andrology2015,17,4:17
3Diagnosis of gastrointestinal bleeding: A practical guide for clinicians显示文摘Gastrointestinal bleeding is a common problem encountered in the emergency department and in the primary care setting. Acute or overt gastrointestinal bleeding is visible in the form of hematemesis, melena or hematochezia. Chronic or occult gastrointestinal bleeding is notapparent to the patient and usually presents as positive fecal occult blood or iron deficiency anemia. Obscure gastrointestinal bleeding is recurrent bleeding when the source remains unidentified after upper endoscopy and colonoscopic evaluation and is usually from the small intestine. Accurate clinical diagnosis is crucial and guides definitive investigations and interventions. This review summarizes the overall diagnostic approach to gastrointestinal bleeding and provides a practical guide for clinicians.Bong Sik Matthew Kim Bob T Li Alexander Engel Jaswinder S Samra Stephen Clarke Ian D Norton Angela E Li 2014World Journal of Gastrointestinal Pathophysiology2014,5,4:13
4Elucidation of the ‘Honeycrisp’ pedigree through haplotype analysis with a multi-family integrated SNP linkage map and a large apple (Malus×domestica) pedigree-connected SNP data set显示文摘The apple(Malus×domestica)cultivar Honeycrisp has become important economically and as a breeding parent.An earlier study with SSR markers indicated the original recorded pedigree of‘Honeycrisp’was incorrect and‘Keepsake’was identified as one putative parent,the other being unknown.The objective of this study was to verify‘Keepsake’as a parent and identify and genetically describe the unknown parent and its grandparents.A multi-family based dense and high-quality integrated SNP map was created using the apple 8 K Illumina Infinium SNP array.This map was used alongside a large pedigree-connected data set from the RosBREED project to build extended SNP haplotypes and to identify pedigree relationships.‘Keepsake’was verified as one parent of‘Honeycrisp’and‘Duchess of Oldenburg’and‘Golden Delicious’were identified as grandparents through the unknown parent.Following this finding,siblings of‘Honeycrisp’were identified using the SNP data.Breeding records from several of these siblings suggested that the previously unreported parent is a University of Minnesota selection,MN1627.This selection is no longer available,but now is genetically described through imputed SNP haplotypes.We also present the mosaic grandparental composition of‘Honeycrisp’for each of its 17 chromosome pairs.This new pedigree and genetic information will be useful in future pedigree-based genetic studies to connect‘Honeycrisp’with other cultivars used widely in apple breeding programs.The created SNP linkage map will benefit future research using the data from the Illumina apple 8 and 20 K and Affymetrix 480 K SNP arrays.Nicholas P Howard Eric van de Weg David S Bedford Cameron P Peace Stijn Vanderzande Matthew D Clark Soon Li Teh Lichun Cai James J Luby 2017Horticulture Research2017,4,1:9
5行波光电二极管级联阵列输出功率合成研究显示文摘针对未来光载无线通信所需的高功率、大带宽的光电探测器,提出了一种行波光电二极管级联阵列功率合成电路.先将行波光电二极管级联,再按照阵列式结构将多组级联的光电二极管组合起来,实现射频功率合成,以获得高功率、大带宽的射频信号.采用EDA工具,对该光电转换射频功率合成电路进行仿真模拟.仿真结果表明,该功率合成电路可以有效地将各光电二极管的射频输出信号进行功率合成,功率合成后的信号带宽显著增加,仿真结果与理论分析完全一致.此外,电路分析表明,增加该功率合成电路中的高阻微带线的特性阻抗可以有效提高其输出射频信号的带宽.文化锋 聂秋华 刘太君 徐铁峰 应祥岳 CLARK Kevin LI Ying-feng 2015光子学报2015,44,3:7
6Assessment of an Evapotranspiration Deficit Drought Index in Relation to Impacts on Ecosystems显示文摘Ecosystems have increasingly been subject to the challenge of heavy drought under global warming. To quantitatively evaluate the impacts of drought on ecosystems, it is necessary to develop a drought index that can sensitively depict the response of vegetation to drought evolution at a biological time scale. For the ability of direct connection between climate and ecosystem by deficit of evapotranspiration, in the present study, a drought index was defined based on standardized evapotranspiration deficit (SEDI), according to the difference between actual and potential evapotranspiration, to meet the need for highlighting drought impacts on ecological processes. Comparisons with traditional indices show that SEDI can reasonably detect droughts and climatic dry and wet transitions, especially at a monthly time scale, and can also regenerate long-term trends. Moreover, SEDI can more sensitively capture the biological changes of ecosystems in response to the dynamics of drought intensity, compared with the indices of precipitation and temperature. SEDI is more practical than the precipitation and temperature indices to highlight signals of biological effects in climate droughts. Hence, it has potential for use in assessments of climate change and its impact on ecosystems.Xia ZHANG Mingxing LI Zhuguo MA Qing YANG Meixia LV Robin Clark 2019Advances in Atmospheric Sciences2019,36,11:6
7Functional Analysis of Slow Myosin Heavy Chain 1 and Myomesin-3 in Sarcomere Organization in Zebrafish Embryonic Slow Muscles显示文摘Myofibrillogenesis, sarcomere 形成的过程,要求 sarcomeric 蛋白质的靠近的相互作用和 sarcomere 结构的各种各样的部件。肌浆球蛋白厚细丝和 M 线是 sarcomere 的二个关键部件。M 线的 myomesin 蛋白质与肌浆球蛋白和 titin 蛋白质交往并且使,这被建议了厚并且有序的 titin 细丝。然而,在 myofibrillogenesis 和 sarcomere 组织的 myomesin 的功能仍然保持大部分神秘。没有猛烈或击倒的动物模型被报导了阐明在 sarcomere 组织 in vivo 的 myomesin 的角色。在这研究,由在 zebrafish 胚胎使用基因特定的击倒的途径,我们执行了 myomesin-3 和慢肌浆球蛋白的 loss-of-function 分析重链(smyhc1 ) 1 在慢肌肉明确地表示了。我们表明了那废除的 smyhc1 击倒在慢肌肉的 myomesin-3 的 sarcomeric 本地化。相反, myomesin-3 的损失没在厚、薄的细丝以及 M 线和 Z 线结构的 sarcomeric 组织上有效果。一起,这些研究显示那肌浆球蛋白厚细丝为 M 线组织和 myomesin-3 的 M 线本地化被要求。相反, myomesin-3 为在慢肌肉的 sarcomere 组织是非必需的。Jin Xu Jie Gao Junling Li Liangyi Xue Kan J. Clark Stephen C. Ekker Shao Jun Du 2012Journal of Genetics and Genomics2012,39,2:6
8Androgen-deprivation therapy-induced aggressive prostate cancer with neuroendocrine differentiation显示文摘大多数前列腺癌症(PCas ) 作为 acinar 类型被分类(常规) 有包括雄激素受体(AR ) 和前列腺特定的抗原(PSA ) 的表示的钠区别的肿瘤房间镇静的腺癌。在腺癌的每种情况中有也散布的 neuroendocrine (NE ) 房间。NE 房间是 quiesecent,不表示 AR 或 PSA,并且他们的功能仍然保持不清楚。我们证明了那条 IL8-CXCR2-P53 小径提供一个生长禁止的信号并且把 NE 房间放在良性的前列腺和腺癌静止。有趣地,在神经质的治疗,和如此的肿瘤由是的纯 NE 房间组成以后,有腺癌的历史的一些病人与小房间 neuroendocrine 癌(SCNC ) 复发高度 proliferative 并且好攻击,由于 P53 变化和 IL8-CXCR2-P53 小径的 inactivation。SCNC 的发生将多半由于进一步禁止 AR 功能或 intratumoral 雄激素合成的新奇的药的普遍使用增加。阶段 II 试用证明了基于铂的化疗可能为如此的导致治疗的肿瘤是有用的。Julia Lipianskaya Alexa Cohen Clark J Chen Elaine Hsia Jill Squires Zhen Li Yaqun Zhang Wei Li Xufeng Chen Hua Xu Jiaoti Huang 2014Asian Journal of Andrology2014,16,4:6
9Neuroendocrine differentiation of prostate cancer显示文摘Zhen Li Clark J Chen Jason K Wang Elaine Hsia Wei Li Jill Squires Yin Sun Jiaoti Huang 2013Asian Journal of Andrology2013,15,3:5
10Clinical Practice Guidelines and Experts’Consensuses for Treatment of Coronavirus Disease 2019(COVID-19)Patients with Chinese Herbal Medicine:A Systematic Review显示文摘Objective:To systematically review the clinical practice guidelines for the treatment of coronavirus disease 2019(COVID-19)patients with Chinese herbal medicine(CHM),summarize their recommendations and evaluate their qualities.Methods:Electronic databases,websites of governments,academic associations or organizations for eligible guidelines were searched up to April 2020.Information were extracted to summarize recommendations for the use of Chinese herbal formulae and Chinese patent medicine(CPM)for COVID-19 patients.The methodological quality and reporting quality of the included guidelines were independently evaluated,using the Appraisal of Guidelines for REsearch and Evaluation(AGREE)Ⅱtool and Reporting Items for Practice Guidelines in healthcare(RIGHT)statement,respectively.Results:Totally 45 guidelines were identififi ed:42(93%)suggested specific CM formulae for treating COVID-19 patients;and 35(78%)assigned patients diagnosed with COVID-19 to 4 stages(early,development,critical and recovery).The recommended formulae and CPMs for each stage with diverse syndrome types have been summarized.Most of the included guidelines were of low methodological quality,with only one achieving moderate quality of AGREEⅡ.The frequency with which the 35 items in the Reporting Items for Practice Guidelines in Healthcare(RIGHT)checklist were reported averaged 36.5%across the 45 guidelines.Conclusions:This systematic review has summarized current recommendations for treating COVID-19 patients with CHM and shows that the general quality of present guidelines is quite low.The development of future guidelines should include increased awareness of the features of good quality guidelines.LI Yu-xi LI Juan ZHANG Yue TIAN Yan-ping ZHANG Yong-gang JIN Rong-jiang GUO Yan Mike Clarke 2020Chinese Journal of Integrative Medicine2020,26,10:3
11Frequent amplification of a chr19q13.41 microRNA polycistron in aggressive primitive neuroectodermal brain tumors显示文摘Li M Lee KF Lu Y Clarke I Shih D Eberhart C Collins VP Van Meter T Picard D Zhou L Boutros PC Modena P Liang ML Scherer SW Bouffet E Rutka JT Pomeroy SL Lau CC Taylor MD Gajjar A Dirks PB Hawkins CE Huang A. 2009中国神经肿瘤杂志2009,7,4:3
12Spatiotemporal event detection: a review显示文摘The advancements of sensing technologies,including remote sensing,in situ sensing,social sensing,and health sensing,have tremendously improved our capability to observe and record natural and social phenomena,such as natural disasters,presidential elections,and infectious diseases.The observations have provided an unprecedented opportunity to better understand and respond to the spatiotemporal dynamics of the environment,urban settings,health and disease propagation,business decisions,and crisis and crime.Spatiotemporal event detection serves as a gateway to enable a better understanding by detecting events that represent the abnormal status of relevant phenomena.This paper reviews the literature for different sensing capabilities,spatiotemporal event extraction methods,and categories of applications for the detected events.The novelty of this review is to revisit the definition and requirements of event detection and to layout the overall workflow(from sensing and event extraction methods to the operations and decision-supporting processes based on the extracted events)as an agenda for future event detection research.Guidance is presented on the current challenges to this research agenda,and future directions are discussed for conducting spatiotemporal event detection in the era of big data,advanced sensing,and artificial intelligence.Manzhu Yu Myra Bambacus Guido Cervone Keith Clarke Daniel Duffy Qunying Huang Jing Li Wenwen Li Zhenlong Li Qian Liu Bernd Resch Jingchao Yang Chaowei Yang 2020International Journal of Digital Earth2020,13,12:2
13Exercise pre-conditioning reduces brain damage in ischemic rats that may be associated with regional angiogenesis and cellular overexpression of neurotrophin显示文摘Y Ding J Li X Luan Y.H Ding Q Lai J.A Rafols J.W Phillis J.C Clark F.G Diaz 2004Neuroscience2004,,3:2
14Chromatin-bound NLS proteins recruit membrane vesicles and nucleoporins for nuclear envelope assembly via importin-α/β显示文摘Quanlong Lu Zhigang Lu Qinying Liu Li Guo He Ren Jingyan Fu Qing Jiang Paul R Clarke Chuanmao Zhang 2012Cell Research2012,22,11:2
15Antifungal evaluation of pseudolaric acid B, a major constituent of pseudolarix kaempferi显示文摘Li E Clark A M Hufford C D 1995J Nat Prod1995,58,:1
16Markov random field for tumor detection in digital mammography 显示文摘Li H D MKallergi M Clarke L P 1995IEEE Trans Medial Imaging1995,14,:1
17Minimally interrupted car- diac resuscitation by emergency medical services for ot-of-hospi- tal cardiac arrest显示文摘Bobrow B J Clark LI Kwy GA 2008JAMA2008,299,10:1
18Synthesis and activity of a new catalystfor hydroprocessingtungsten phosphide显示文摘Paul Clark Wei Li Oyama S T 2000Journal of catalysis2000,200,:1
19Instructional design and technology grounded in Enactivism A para- digm shift? 显示文摘Qing Li Bruce Clark and Ian Winchester 2010British Journal of Educational Tech nology2010,3,41:1
20Histological examination of antler regeneration in red deer显示文摘Li C Suttie J M Clark D E 2005Anat Rec A Discov Mol Cell Evol Biol2005,282,2:1
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