|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Opposite effects of nitrogen fertilization and plastic film mulching on crop N and P stoichiometry in a temperate agroecosystem显示文摘Aims Crop nitrogen(N)and phosphorus(P)stoichiometry can influence food nutritive quality and many ecosystem processes.However,how and why N and P stoichiometry respond to long-term agricul-tural management practices(e.g.N fertilization and film mulching)are not clearly understood.Methods We collected maize tissues(leaf,stem,root and seed)and soil sam-ples from a temperate cropland under 30-year continuous N fer-tilization and plastic film mulching treatments,measured their C,N and P concentrations(the proportion(%)relative to the sample mass),and used structural equation models to uncover the re-sponding mechanisms for crop N and P contents(the total amount(g/m2)in crop biomass).Important Findings Long-term N fertilization increased N concentrations in all crop tissues but sharply decreased P concentrations in vegetative tis-sues(leaf,stem and root),thereby reducing their C/N ratio and increasing C/P and N/P ratios.The drop in P concentration in vegetative tissues was due to the dilution effect by biomass in-crement and the priority of P supply for seed production.In con-trast,film mulching decreased N concentration but increased P concentrations in most crop tissues,thereby increasing C/N ratio and reducing C/P and N/P ratios.Film mulching increased crop P content by increasing soil temperature and moisture;whereas,mulching showed little effect on crop N content,because a posi-tive effects of soil temperature may have canceled out a negative effect by soil moisture.This indicated a decoupling of P and N uptake by crops under film mulching.In conclusion,N fertiliza-tion and plastic film mulching showed opposite effects of on crop N and P stoichiometry. | Fan Ding Shuangyi Li Xiao-Tao Lü Feike A.Dijkstra Sean Schaeffer Tingting An Jiubo Pei Liangjie Sun Jingkuan Wang | 2019 | Journal of Plant Ecology2019，12，4： | 8 |
| 2 | 含氟牙膏对离体脱矿恒牙再矿化作用的实验研究显示文摘目的评价含氟牙膏促进离体脱矿恒牙再矿化的作用。方法选取和制作牙体硬度170KHN左右的16颗离体年轻脱矿恒牙标本,随机分成A、B两组(P>0.05)。A组用无氟Crest牙膏作再矿化处理,B组用含氟的Crest牙膏作再矿化处理,同时将A、B组标本浸泡于人唾液中。用微硬度测量仪测定并记录每个牙标本的硬度。结果A组脱矿牙的硬度平均值为151.9±38.3,而再矿化后牙齿的硬度平均值为143.4±18.8,两组比较P>0.05。B组脱矿牙的硬度平均值为160.1±16.5,而再矿化后牙齿的硬度平均值为200.5±21.3,两组比较P<0.05。再矿化后AB两组的硬度值比较P<0.001。结论含氟牙膏对离体脱矿恒牙有较明显的再矿化作用。 | 陈宏 丁熙 张秀华 ZHANG Wu LI Yi-min Sean S. LEE | 2008 | 口腔医学2008，28，10： | 7 |
| 3 | Hepatocellular Carcinoma and the Role of Liver Transplantation:A Review显示文摘Hepatocellular carcinoma(HCC)is one of the leading causes of cancer deaths worldwide and liver transplantation(LT)is the only potentially curative treatment.Over the years,Milan criteria has been used for patient selection.There is ongoing research in this field with introduction of new biomarkers for HCC that can help guide future treatment.Furthermore,newer therapies for downstaging of the tumor are being implemented to prevent dropout from the transplant list.In addition,combination therapies for better outcome are under investigation.Interestingly,the concept of living-donor LT and possible use of hepatitis C virus-positive donors has been implemented as an attempt to expand the organ pool.However,there is a conflict of opinion between different centers regarding its efficacy and data is scarce.The aim of this review article is to outline the various selection criteria for LT,discuss the outcomes of LT in HCC patients,and explore future directions of LT for HCC.Therefore,a comprehensive PubMed/MEDLINE review was conducted.To expand our search,references of the retrieved articles were also screened for additional data.After selecting the studies,the authors independently reviewed them to identify the relevant studies.After careful evaluation 120 studies relevant to out topic are cited in the manuscript.Three tables and two figures are also included.In conclusion LT for HCC has evolved over the years.With the introduction of several expanded criteria beyond Milan,the introduction of bridging therapies,such as transcatheter arterial chemoembolization and radiofrequency ablation,and the approval of newer systemic therapies,it is evident that there will be more LT recipients in the future.It is promising to see ongoing trials and the continuous evolution of protocols.Prospective studies are needed to guide the development of a pre-LT criteria that can ensure low HCC recurrence risk and is not overly stringent,clarify the role of LDLT,and determine the optimal bridging therapies to LT. | Haris Muhammad Aniqa Tehreem Peng-Sheng Ting Merve Gurakar Sean Young Li Cem Simsek Saleh A.Alqahtani Amy K.Kim Ruhail Kohli Ahmet Gurakar | 2021 | Journal of Clinical and Translational Hepatology2021，9，5： | 7 |
| 4 | DESC: enabling secure data exchange based on smart contracts显示文摘Dear editor,As data are one of the most important factors of today’s intelligent systems but are relatively scarce,people try exchanging data with other organizations or public marketplaces.However,data exchange is now lack of a secure execution mecha- | Jiao LIANG Weili HAN Zeqing GUO Yaoliang CHEN Chang CAO Xiaoyang Sean WANG Fenghua LI | 2018 | Science China(Information Sciences)2018，61，4： | 5 |
| 5 | A Facile and Template-Free One-Pot Synthesis of Mn_3O_4 Nanostructures as Electrochemical Supercapacitors显示文摘In this paper, we report an effective, simple, and cost-effective strategy of electrochemical deposition to prepare hausmannite Mn_3O_4 thin films for the applications of supercapacitors. Various precursor concentrations and deposition durations were manipulated to tailor the surface morphologies of Mn_3O_4 nanostructures and to optimize their electrochemical performances. The Mn_3O_4 samples prepared at 0.05 M Mn(NO3)2solution for 30 min delivered a large gravimetric specific capacitance of 210 F g-1at a current density of 0.5 A g-1, and a good rate capability over other samples. This superior electrochemical performance may be attributed to the improved electrode conductivity with increased accessible area for electrolytes ions. Furthermore, a nanocomposite film based on Mn_3O_4/carbon foam was fabricated by utilizing the developed optimized conditions. The Mn_3O_4/carbon foam films exhibit an excellent specific capacitance with negligible degradation in retaining specific capacitance values up to 4000 cycles. These findings could further broaden the applications of hausmannite Mn_3O_4 in electrochemical energy storage electrodes. | Zhenjun Qi Adnan Younis Dewei Chu Sean Li | 2016 | Nano-Micro Letters2016，8，2： | 4 |
| 6 | Controlled fabrication of Pr(OH)_3 nanowires for enhanced photocatalytic activities显示文摘In this report, praseodymium hydroxide Pr(OH)_3 nanowires with different aspect ratios (length to diameter ratios) were synthesized by a facile hydrothermal approach. The variations in alkali concentration during synthesis are found to form different aspect ratios of nanowires. The X-ray diffraction and Raman spectroscopy analysis demonstrate the absence of any impurity phases in as-prepared materials.Subsequently, photocatalytic activities of as-prepared nano wires were evaluated by the degradation of methyl orange (MO). Our findings reveal that the nanowires with larger aspect ratios have higher photocatalytic efficiency than the smaller aspect ratio samples. X-ray photospectroscopy investigations reveal that the samples with higher aspect ratio are found to exhibit more oxygen vacancies as compared to lower aspect ratio samples. The enhanced photocatalytic activities can be attributed to the presence of higher percentage of active crystal facet (100), higher concentration of defects densities and narrower band gap. Thus, Pr(OH)_3 nanowires can be considered as a potential candidate for the application of wastewater treatment and related technologies. | Nan Chen Adnan Younis Dewei Chu Sean Li | 2019 | Journal of Rare Earths2019，37，1： | 3 |
| 7 | Ambulatory Arterial Stiffness Index as a Predictor of Cardiovascular Mortality in the Dublin Outcome Study显示文摘 | Eamon Dolan Lutgarde Thijs Yan Li Neil Atkins Patricia McCormack Sean McClory Eoin O’Brien Jan A. Staessen Alice V. Stanton | 2006 | Hypertension2006，，3： | 3 |
| 8 | Cloud computing — The business perspective显示文摘 | Sean Marston Zhi Li Subhajyoti Bandyopadhyay Juheng Zhang Anand Ghalsasi | 2010 | Decision Support Systems2010，，1： | 2 |
| 9 | Carbon-based bifunctional electrocatalysts for oxygen reduction and oxygen evolution reactions:Optimization strategies and mechanistic analysis显示文摘Electrocatalysts are one of the essential components for the devices of high-efficiency green energy storage and conversion,such as metal-air cells,fuel cells,and water electrolysis systems.While catalysts made from noble metals possess high catalytic performance in both oxygen reduction reaction(ORR)and oxygen evolution reaction(OER),their scarcity and expensiveness significantly limit large-scale applications.In this regard,metal-free/non-noble metal carbon-based catalysts have become competitive alternatives to replace catalysts made of noble metals.Nevertheless,low catalytic ORR/OER performance is the challenge of carbon-based catalysts for the commercial applications of metal-air batteries.To solve the problem of poor catalytic performance,two strategies have been proposed:(1)controlling the microstructure of the catalysts to expose more active sites as the channels of rapid mass and electron transfer;and(2)reducing the reaction energy barrier by optimizing the electronic structures of the catalysts via surface engineering.Here,we review different types of bifunctional ORR/OER electrocatalysts with the activated surface sites.We focus on how the challenge can be overcome with different methods of material synthesis,structural and surface characterization,performance validation/optimization,to outline the principles of surface modifications behind catalyst designs.In particular,we provide critical analysis in the challenges that we are facing in structural design and surface engineering of bifunctional ORR/OER catalysts and indicate the possible solution for these problems,providing the society with clearer ideas on the practical prospects of noble-metal-free electrocatalysts for their future applications. | Huidong Xu Jack Yang Riyue Ge Jiujun Zhang Ying Li Mingyuan Zhu Liming Dai Sean Li Wenxian Li | 2022 | Journal of Energy Chemistry2022，31，8： | 2 |
| 10 | A single-molecule multicolor electrochromic device generated through medium engineering显示文摘Multicolor organic electrochromic materials are important for the generation of full-color devices.However,achieving multiple colors using a single-molecule material has proved challenging.In this study,a multicolor electrochromic prototype device is generated by integrating medium engineering/in situ‘electro base’/laminated electrode technologies with the simple flying fish-shaped methyl ketone TM1.This multicolor electrochromic(green,blue and magenta)device is durable and has a high coloration efficiency(350 cm^(2) C^(-1)),a fast switching time(50 ms)and superior reversibility.This study is a successful attempt to integrate solvatochromism and basochromism in an electronic display.This integration not only introduces a new avenue for color tuning,in addition to the structural design of the colorant,but will also inspire further developments in the tuning of many other properties by this medium engineering approach,such as conductance and the redox property,and thereby accelerate versatile applications in data recording,ultrathin flexible displays,and optical communication and sensing. | Yu-Mo Zhang Xiaojun Wang Weiran Zhang Wen Li Xiaofeng Fang Bing Yang Minjie Li Sean Xiao-An Zhang | 2015 | Light(Science & Applications)2015，4，1： | 2 |
| 11 | Levels of circulating follicular helper T cells,T helper 1 cells,and the prognostic significance of soluble form of CD40 ligand on survival in patients with alcoholic cirrhosis显示文摘Background:Excessive drinkers(ED)and patients with alcoholic liver disease(ALD)are several times more susceptible to bacterial and viral infections and have a decrease in antibody responses to vaccinations.Follicular helper T(TFH)cells are essential to select B cells in the germinal center and to produce antibodies.TFH cells express both a membrane-associated and a soluble form of CD40 ligand(sCD40L),in which the latter form is released to circulation upon T cell activation.The effect of alcohol on TFH cells has not been studied.Objectives:The goals of this study are to determine the levels of TFH and T helper 1(Th1)cells in ED and those with alcoholic cirrhosis(AC)when compared to healthy controls and to determine the prognostic significance of sCD40L in a cohort of patients with AC.Methods:Controls,ED,and those with AC were enrolled.Baseline demographic,laboratory tests,and peripheral blood mononuclear cells(PBMCs)were isolated and assessed via flow cytometry for TFH cells.In vitro study was performed to determine the ability of PBMCs to secrete interferon(IFN)-ɣupon stimulation.Serum sCD40L was also determined and its prognostic significance was tested in a cohort of AC patients.Results:The levels of circulating TFH(cTFH)cells were significantly lower in peripheral blood of subjects with ED and AC compared to controls(P<0.05).IFN-ɣsecretion from PBMCs upon stimulation was also lower in ED and those with cirrhosis.Serum sCD40L was significantly lower in ED and AC when compared to that in controls(P<0.0005).Its level was an independent predictor of mortality.Conclusions:Patients with AC had significantly lower level of cTFH and sCD40L.The level of sCD40L was an independent predictor of mortality in these patients. | Kristin Hollister Praveen Kusumanchi Ruth Ann Ross Kristina Chandler AdePeju Oshodi Laura Heathers Sean Teagarden Li Wang Alexander L.Dent Suthat Liangpunsakul | 2018 | Liver Research2018，2，1： | 2 |
| 12 | Causal Effects of Body Mass Index on Cardiometabolic Traits and Events: A Mendelian Randomization Analysis显示文摘 | Michael V. Holmes Leslie A. Lange Tom Palmer Matthew B. Lanktree Kari E. North Berta Almoguera Sarah Buxbaum Hareesh R. Chandrupatla Clara C. Elbers Yiran Guo Ron C. Hoogeveen Jin Li Yun R. Li Daniel I. Swerdlow Mary Cushman Tom S. Price Sean P. Curtis My | 2014 | The American Journal of Human Genetics2014，，2： | 1 |
| 13 | Correlation of serum HE4 with tumor size and myometrial invasion in endometrial cancer显示文摘 | Eleftheria Kalogera Nathalie Scholler Cecelia Powless Amy Weaver Ronny Drapkin Jinping Li Shi-Wen Jiang Karl Podratz Nicole Urban Sean C. Dowdy | 2011 | Gynecologic Oncology2011，，2： | 1 |
| 14 | Comparison of Clinical Efficacy and Safety of Three Professional At-Home Tooth Whitening Systems显示文摘 | Yiming Li Sean S Lee Susan L Cartwright | 2003 | Compendium2003，24，5： | 1 |
| 15 | Agonistic Autoantibodies as Vasodilators in Orthostatic Hypotension: A New Mechanism显示文摘 | Hongliang Li David C. Kem Sean Reim Muneer Khan Megan Vanderlinde-Wood Caitlin Zillner Daniel Collier Campbell Liles Michael A. Hill Madeleine W. Cunningham Christopher E. Aston Xichun Yu | 2012 | 2012 (2 Su)2012，，2： | 1 |
| 16 | A systematic review of urinary findings in experimental septic acute renal failure显示文摘 | Sean M. Bagshaw Christoph Langenberg Li Wan Clive N. May Rinaldo Bellomo | 2007 | Critical Care Medicine2007，，6： | 1 |
| 17 | Field Studies of Well-Instrumented Barrette in Hong Kong显示文摘 | K. S. Li Joley Lam Charles W. W. Ng Douglas B. Rigby Sean W. L. Ng G. H. Lei | 2001 | Journal of Geotechnical and Geoenvironmental Engineering2001，，5： | 1 |
| 18 | Structural analysis,magnetic and electrical properties of samarium substituted lithium-nickel mixed ferrites显示文摘 | Muthafar F Al-Hilli Sean Li Kassim S Kassim | 2012 | J Magn Magn Mater2012，324，5： | 1 |
| 19 | Center variation and outcomes associated with delayed sternal closure after stage 1 palliation for hypoplastic left heart syndrome显示文摘 | Jason N. Johnson James Jaggers Shuang Li Sean M. O’Brien Jennifer S. Li Jeffrey P. Jacobs Marshall L. Jacobs Karl F. Welke Eric D. Peterson Sara K. Pasquali | 2010 | The Journal of Thoracic and Cardiovascular Surgery2010，，5： | 1 |
| 20 | Cloud computing the business perspective 显示文摘 | Sean M Li Z Subhajyoti B | 2011 | Decision Support Systems2011，51，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员