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143篇 您的检索式:作者名="TIMOTHY LEE"
    题名 作者 年代 出处 被引量
1Piglet gut microbial shifts early in life:causes and effects显示文摘The gut microbiome has long been known to play fundamentally important roles in the animal health and the well-being of its host. As such, the establishment and maintenance of a beneficial gut microbiota early in life is crucial in pigs, since early gut colonizers are pivotal in the establishment of permanent microbial community structures affecting the health and growth performance of pigs later in life. Emphasizing this importance of early gut colonizers, it is critical to understand the factors impacting the establishment of the piglet gut microbiome at weaning. Factors include, among others, diet, in-feed antibiotics, probiotics and prebiotic administration. The impact of these factors on establishment of the gut microbiome of piglets at weaning includes effects on piglet gut microbial diversity, structure, and succession. In this review, we thoroughly reviewed the most recent findings on the piglet gut microbiome shifts as influenced by weaning, and how these microbiome changes brought about by various factors that have been shown to affect the development of microbiota in piglets. This review will provide a general overview of recent studies that can help to facilitate the design of new strategies to modulate the gut microbiome in order to enhance gastrointestinal health, growth performance and well-being of piglets.Robin B.Guevarra Jun Hyung Lee Sun Hee Lee Min-Jae Seok Doo Wan Kim Bit Na Kang Timothy J.Johnson Richard E.Isaacson Hyeun Bum Kim 2019Journal of Animal Science and Biotechnology2019,10,3:13
2LAMOST Experiment for Galactic Understanding and Exploration (LEGUE)——The survey's science plan显示文摘We describe the current plans for a spectroscopic survey of millions of stars in the Milky Way galaxy using the Guo Shou Jing Telescope (GSJT, formerly called the Large sky Area Multi-Object fiber Spectroscopic Telescope - LAMOST). The survey will obtain spectra for 2.5 million stars brighter than r < 19 during dark/grey time, and 5 million stars brighter than r < 17 or J < 16 on nights that are moonlit or have low transparency. The survey will begin in the fall of 2012, and will run for at least four years. The telescope's design constrains the optimal declination range for observations to 10 < δ < 50 , and site conditions lead to an emphasis on stars in the direction of the Galactic anticenter. The survey is divided into three parts with different target selection strategies: disk, anticenter, and spheroid. The resulting dataset will be used to study the merger history of the Milky Way, the substructure and evolution of the disks, the nature of the first generation of stars through identification of the lowest metallicity stars, and star formation through study of open clusters and OB associations. Detailed design of the LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) survey will be completed in summer 2012, after a review of the results of the pilot survey.Li-Cai Deng Heidi Jo Newberg Chao Liu Jeffrey L. Carlin Timothy C. Beers Li Chen Hsu-Tai Lee Carl J. Grillmair Puragra Guhathakurta] Zhan-Wen Han Jin-Liang Hou Sebastien Lepine Jing Li Xiao-Wei Liu Kai-Ke Pan J. A. Sellwood Bo Wang Hong-Chi Wang Fan Yang Brian Yanny Hao-Tong Zhang Yue-Yang Zhang Zheng Zheng Zi Zhu 2012Research in Astronomy and Astrophysics2012,12,7:10
3Emerging radiotherapy technologies and trends in nasopharyngeal cancer显示文摘AbTechnology has always driven advances in radiotherapy treatment.In this review,we describe the main technological advances in radiotherapy over the past decades for the treatment of nasopharyngeal cancer(NPC)and highlight some of the pressing issues and challenges that remain.We aim to identify emerging trends in radiation medicine.These include advances in personalized medicine and advanced imaging modalities,standardization of planning and delineation,assessment of treatment response and adaptive re-planning,impact of particle therapy,and role of artificial intelligence or automation in clinical care.In conclusion,we expect significant improvement in the therapeutic ratio of radiotherapy treatment for NPC over the next decade.Michelle Tseng Francis Ho Yiat Horng Leong Lea ChoungWong Ivan WK Tham Timothy Cheo Anne WM Lee 2020Cancer Communications2020,40,9:5
4Maintenance Peginterferon Therapy and Other Factors Associated With Hepatocellular Carcinoma in Patients With Advanced Hepatitis C显示文摘Anna S. Lok James E. Everhart Elizabeth C. Wright Adrian M. Di Bisceglie Hae–Young Kim Richard K. Sterling Gregory T. Everson Karen L. Lindsay William M. Lee Herbert L. Bonkovsky Jules L. Dienstag Marc G. Ghany Chihiro Morishima Timothy R. Morgan 2011Gastroenterology2011,,3:4
5Incidence of Hepatocellular Carcinoma and Associated Risk Factors in Hepatitis C-Related Advanced Liver Disease显示文摘Anna S. Lok Leonard B. Seeff Timothy R. Morgan Adrian M. di Bisceglie Richard K. Sterling Teresa M. Curto Gregory T. Everson Karen L. Lindsay William M. Lee Herbert L. Bonkovsky Jules L. Dienstag Marc G. Ghany Chihiro Morishima Zachary D. Goodman 2009Gastroenterology2009,,1:3
6Critical size limit of biodegradable nanopartides for enhanced lymph node trafficking and paracortex penetration显示文摘Lymph node (LN) targeti ng through interstitial drain age of nan oparticles (NPs) is an attractive strategy to stimulate a pote nt immune respo nse, as LNs are the primary site for lymphocyte priming by antigen presenting cells (APCs) and triggering of an adaptive immune response. NP size has been shown to influence the efficiency of LN-targeting and retention after subcutaneous injection. For clinical translation, biodegradable NPs are preferred as carrier for vaccine delivery. However, the selective 'size gateM for effective LN-drainage, particularly the kinetics of LN trafficking, is less well defined. This is partly due to the challenge in generating size-controlled NPs from biodegradable polymers in the sub-100-nm range. Here, we report the preparation of three sets of poly(lactic-co-glycolic)-b-poly(ethylene-glycol)(PLGA-b-PEG) NPs with number average diameters of 20-, 40-, and 100-nm and narrow size distributions using flash nanoprecipitation. Using NPs labeled with a near-infrared dye, we showed that 20-nm NPs drain rapidly across proximal and distal LNs following subcutaneous inoculation in mice and are retai ned in LNs more effectively than NPs with a nu mber average diameter of 40-nm. The drain age of 100-nm NPs was n egligible. Furthermore, the 20-nm NPs showed the highest degree of penetration around the paracortex region and had enhanced access to dendritic cells in the LNs. Together, these data confirmed that small, size-controlled PLGA-b-PEG NPs at the lower threshold of about 30-nm are most effective for LN trafficking, retention, and APC uptake after s.c. administration. This report could inform the design of LN-targeted NP carrier for the delivery of therapeutic or prophylactic vaccines.Gregory P. Howard Garima Verma Xiyu Ke Winter M. Thayer Timothy Hamerly Victoria K. Baxter John E. Lee Rhoel R. Dinglasan Hai-Quan Mao 2019Nano Research2019,12,4:3
7丁醇同分异构体/汽油混合燃料的燃烧和非常规污染物特性的试验研究(英文)显示文摘本文研究了丁醇同分异构体与汽油混合燃料在进气道喷射的火花点火发动机中的燃烧和排放特性。试验在发动机转速为1200 r/min、发动机负荷为3 bar BMEP 和5 bar BMEP 以及不同混合气空燃比条件下(φ=0.83~1.25)进行,使用了70%体积比的纯汽油和30%体积比的丁醇同分异构体混合燃料(N30,S30,I30 和T30)。结果表明,相比于纯汽油,所有的丁醇同分异构体/汽油混合燃料表现出更高的缸内压力,其中N30 有最高的缸内压力峰值和最早的缸内压力峰值相位;T30 表现出较高的brake燃油消耗率(BSFC)和较低的制动热效率(BTE);相比于其他燃料,N30 的UHC 排放较低而I30 的CO排放较高。在非常规排放物特性方面,相比于纯汽油,丁醇同分异构体/汽油混合燃料有较高的乙醛排放;相比于其他混合燃料,N30 的1,3-丁二烯排放较高。使用丁醇同分异构体/汽油混合燃料可以有效地抑制单环芳烃类质(BTEX)的排放。李元绪 宁智 闫峻豪 Timothy H LEE Chia-fon F LEE 2019Journal of Central South University2019,26,8:3
8A novel near-infrared light responsive 4D printed nanoarchitecture with dynamically and remotely controllable transformation显示文摘Four-dimensional (4D) printing is an emerging and highly innovative additive manufacturing process by which to fabricate pre-designed,self-assembly structures with the ability to transform over time.However,one of the critical challenges of 4D printing is the lack of advanced 4D printing systems that not only meet all the essential requirements of shape change but also possess smart,dynamic capabilities to spatiotemporally and instantly control the shape-transformation process.Here,we present a facile 4D printing platform which incorporates nanomaterials into the conventional stimuli-responsive polymer,allowing the 4D printed object to achieve a dynamic and remote controlled,on-time and position shape transformation.A proof-of-concept 4D printed brain model was created using near-infrared light (NIR) responsive nanocomposite to evaluate the capacity for controllable 4D transformation,and the feasibility of photothermal stimulation for modulating neural stem cell behaviors.This novel 4D printing strategy can not only be used to create dynamic 3D patterned biological structures that can spatiotemporally control their shapes or behaviors of transformation under a human benign stimulus (NIR),but can also provide a potential method for building complex self-morphing objects for widespread applications.Haitao Cui Shida Miao Timothy Esworthy Se-jun Lee Xuan Zhou Sung Yun Hann Thomas J.Webster Brent T.Harris Lijie Grace Zhang 2019Nano Research2019,12,6:3
9扁桃体鳞癌中HPV感染与EGFR、VEGF表达的相关性研究显示文摘目的:研究扁桃体鳞癌(squamous cell carcinomas of the tonsil tonsillar,SCCs)中人乳头瘤病毒(human papillomavirus,HPV)感染与血管内皮生长因子(vascular endothelial growth factor,VEGF)和表皮生长因子受体(epidermal growth factor,EGFR)表达的关系,探讨HPV与EGFR和VEGF在扁桃体鳞癌发生中的交互效应。方法:采用多重实时荧光定量聚合酶链反应(multiplex real-time polymerase chain reaction,MT-PCR)检测85例扁桃体鳞癌HPV DNA及型别,通过HPV DNA分析进行HPV感染状况的测定;同时采用半定量免疫组化检测HPV(+)组和HPV(-)组中VEGF、EGFR蛋白表达情况。结果:扁桃体鳞癌中HPV感染率为49.4%(42/85),HPV-16型占所有感染者的比例为90.5%(38/42),明显高于其他型别;HPV(+)组EGFR蛋白表达明显低于HPV(-)组(P值均<0.01);HPV(+)组与HPV(-)组VEGF蛋白表达无明显差异;此外,VEGF表达与EGFR、患者的年龄、性别、TNM分期、组织学分级均无明显相关性。结论:HPV感染与扁桃体鳞癌的发生存在相关性,HPV相关的扁桃体鳞癌中,HPV基因可能通过改变EGFR表达致癌,为HPV致癌机理进一步研究提供一个新的视角,具有重要的理论意义。费继敏 Timothy A Dobbins Deanna Jones C Soon Lee Christine Loo Jonathan Clark Barbara Rose 2015现代肿瘤医学2015,23,4:3
10Debunking dogma: Surgery for four or more colorectal liver metastases is justified显示文摘Timothy M. Pawlik M.D. M.P.H. Eddie K. Abdalla M.D. Lee M. Ellis M.D. Jean-Nicolas Vauthey M.D. Steven A. Curley M.D 2006Journal of Gastrointestinal Surgery2006,,2:2
11食物是良药:将食物和营养融入医疗保健服务的行动显示文摘Sarah Downer及其同事探讨在医疗保健服务体系中将食品和营养纳入膳食相关疾病的预防、管理和治疗的新举措。与膳食相关的慢性病的全球流行,促使人们尝试将改善饮食作为患者医疗和护理的正规举措。Sarah Downer Seth A Berkowitz Timothy S Harlan Dana Lee Olstad Dariush Mozaffarian 冯琳(译) 武阳丰(校) 2021英国医学杂志中文版2021,24,4:2
12Plexiform fibromyxoma:Review of rare mesenchymal gastric neoplasm and its differential diagnosis显示文摘Plexiform fibromyxoma(PF)is a very rare mesenchymal neoplasm of the stomach that was first described in 2007 and was officially recognized as a subtype of gastric mesenchymal neoplasm by World Health Organization(WHO)in 2010.Histologically,PF is characterized by a plexiform growth of bland spindle to ovoid cells embedded in a myxoid stroma that is rich in small vessels.The lesion is usually paucicellular.While mucosal and vascular invasion have been documented,no metastasis or malignant transformation has been reported.Its pathogenesis is largely unknown and defining molecular alterations are not currently available.There are other mesenchymal tumors arising in the gastrointestinal tract that need to be differentiated from PF given their differing biologic behaviors and malignant potential.Histologic mimics with spindle cells include gastrointestinal stromal tumor,smooth muscle tumor,and nerve sheath tumor.Histologic mimics with myxoid stroma include myxoma and aggressive angiomyxoma.Molecular alterations that have been described in a subset of PF may be seen in gastroblastoma and malignant epithelioid tumor with gliomaassociated oncogene homologue 1(GLI1)rearrangement.The recent increase in publications on PF reflects growing recognition of this entity with expansion of clinical and pathologic findings in these cases.Herein we provide a review of PF in comparison to other mesenchymal tumors with histologic and molecular resemblance to raise the awareness of this enigmatic neoplasm.Also,we highlight the challenges pathologists face when the sample is small,or such rare entity is encountered intraoperatively.Mustafa Erdem Arslan Hua Li Zhiyan Fu Timothy A Jennings Hwajeong Lee 2021World Journal of Gastrointestinal Oncology2021,13,5:2
13Permafrost-associated natural gas hydrate occurrences on the Alaska North Slope显示文摘Timothy S. Collett Myung W. Lee Warren F. Agena John J. Miller Kristen A. Lewis Margarita V. Zyrianova Ray Boswell Tanya L. Inks 2009Marine and Petroleum Geology2009,,2:2
14Seasonal Variations of CH_4 Emissions in the Yangtze River Delta Region of China Are Driven by Agricultural Activities显示文摘Developed regions of the world represent a major atmospheric methane(CH_4) source,but these regional emissions remain poorly constrained.The Yangtze River Delta(YRD) region of China is densely populated(about 16% of China's total population) and consists of large anthropogenic and natural CH_4 sources.Here,atmospheric CH_4 concentrations measured at a 70-m tall tower in the YRD are combined with a scale factor Bayesian inverse(SFBI) modeling approach to constrain seasonal variations in CH_4 emissions.Results indicate that in 2018 agricultural soils(AGS,rice production) were the main driver of seasonal variability in atmospheric CH_4 concentration.There was an underestimation of emissions from AGS in the a priori inventories(EDGAR—Emissions Database for Global Atmospheric Research v432 or v50),especially during the growing seasons.Posteriori CH_4 emissions from AGS accounted for 39%(4.58 Tg,EDGAR v432) to 47%(5.21 Tg,EDGAR v50) of the total CH_4 emissions.The posteriori natural emissions(including wetlands and water bodies) were1.21 Tg and 1.06 Tg,accounting for 10.1%(EDGAR v432) and 9.5%(EDGAR v50) of total emissions in the YRD in2018.Results show that the dominant factor for seasonal variations in atmospheric concentration in the YRD was AGS,followed by natural sources.In summer,AGS contributed 42%(EDGAR v432) to 64%(EDGAR v50) of the CH_4 concentration enhancement while natural sources only contributed about 10%(EDGAR v50) to 15%(EDGAR v432).In addition,the newer version of the EDGAR product(EDGAR v50) provided more reasonable seasonal distribution of CH_4 emissions from rice cultivation than the old version(EDGAR v432).Wenjing HUANG Timothy JGRIFFIS Cheng HU Wei XIAO Xuhui LEE 2021Advances in Atmospheric Sciences2021,38,9:2
15Is Extended Hepatectomy for Hepatobiliary Malignancy Justified?显示文摘Jean-Nicolas Vauthey Timothy M. Pawlik Eddie K. Abdalla James F. Arens Rabih A. Nemr Steven H. Wei Debra L. Kennamer Lee M. Ellis Steven A. Curley 2004Annals of Surgery2004,,5:2
16Microstructure and mechanical properties of CoCrFeMnNi high entropy alloy with ultrasonic nanocrystal surface modification process显示文摘In this study, mechanical properties improvement of equiatomic CoCrFeMnNi treated with an ultrasonic nanocrystal surface modification(UNSM) was studied. The applied UNSM treatment with static loads of 10 N, 20 N, and 60 N provided a severe plastic deformation, which produced a gradient structure. The nearsurface area exhibited a high number of dislocation densities and deformation twin interaction, leading to a surface strengthening and hardness improvement of up to 112% than the deformation-free interior region. Increment of dislocation densities and deformation twin formation on the surface also enhanced the yield and ultimate tensile strength of the UNSM-treated specimens. Furthermore, the combination of hard nanocrystallites layer on the surface and ductile coarse grain in the specimen interior as a result of the UNSM treatment successfully maintained the strength–ductility balance of the CoCrFeMnNi.Timothy Alexander Listyawan Hyunjong Lee Nokeun Park Unhae Lee 2020Journal of Materials Science & Technology2020,54,22:2
17Left ventricular pseudoaneurysm显示文摘Hee Hwa Ho Dasdo Antonius Sinaga Evelyn Lee Timothy James Watson Jimmy Kim Fatt Hon 2017Journal of Geriatric Cardiology2017,14,1:2
18Molecular Genetic Evidence for a Common Clonal Origin of Urinary Bladder Small Cell Carcinoma and Coexisting Urothelial Carcinoma显示文摘Liang Cheng Timothy D. Jones Ryan P. McCarthy John N. Eble Mingsheng Wang Gregory T. MacLennan Antonio Lopez-Beltran Ximing J. Yang Michael O. Koch Shaobo Zhang Chong-Xian Pan Lee Ann Baldridge 2005The American Journal of Pathology2005,,5:2
19Des-γ-Carboxy Prothrombin and α-Fetoprotein as Biomarkers for the Early Detection of Hepatocellular Carcinoma显示文摘Anna S. Lok Richard K. Sterling James E. Everhart Elizabeth C. Wright John C. Hoefs Adrian M. Di Bisceglie Timothy R. Morgan Hae–Young Kim William M. Lee Herbert L. Bonkovsky Jules L. Dienstag 2010Gastroenterology2010,,2:2
20Intravenous N -Acetylcysteine Improves Transplant-Free Survival in Early Stage Non-Acetaminophen Acute Liver Failure显示文摘William M. Lee Linda S. Hynan Lorenzo Rossaro Robert J. Fontana R. Todd Stravitz Anne M. Larson Timothy J. Davern Natalie G. Murray Timothy McCashland Joan S. Reisch Patricia R. Robuck 2009Gastroenterology2009,,3:2
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