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361篇 您的检索式:作者名="Christopher Li"
    题名 作者 年代 出处 被引量
1A community-derived classification for extant lycophytes and ferns显示文摘发展史长通知了蕨类植物分类。当我们推断进化的树的能力改善了,针对认出生来的组的分类变得逐渐地预兆、稳定。这里,我们为 lycophytes 和蕨纲植物提供一个现代、全面分类,在下面,利用一条基于社区的途径类水平。我们 monophyly 用作主要标准让 taxa,而且目的识别保存两个广泛地被接受的存在 taxa 和界限并且与我们蕨类植物发展史的理解一致。总共,这个分类对待一在 337 个类, 51 个家庭, 14 目,和二个班估计了 11  916 种类。这个分类没在 lycophyte 和蕨纲植物上作为最后的词被打算分类,而是当前的假设的概括陈述,源于最好的可得到的数据并且在问题由熟悉植物的那些大多数塑造了。我们希望它将在蕨类植物上为最近的文学的那些想要的参考用作一个资源发展史和分类,为指导未来调查的一个框架,和推进讲话的刺激。Eric Schuettpelz Harald Schneider Alan R. Smith Peter Hovenkamp Jefferson Prado Germinal Rouhan Alexandre Salino Michael Sundue Thafs Elias Almeida Barbara Parris Emily B. Sessa Ashley R. Field Andre Luis de Gasper Carl J. Rothfels Michael D. Windham Marcus Lehnert Benjamin Dauphin Atsushi Ebihara Samuli Lehtonen Pedro Bond Schwartsburd Jordan Metzgar Li-Bing Zhang Li-Yaung Kuo Patrick J. Brownsey Masahiro Kato Marcelo Daniel Arana Francine C. Assis Michael S. Barker David S. Barrington Ho-Ming Chang Yi-Han Chang Yi-Shan Chao Cheng-Wei Chen De-Kui Chen Wen-Liang Chiou Vinicius Antonio de Oliveira Dittrich Yi-Fan Duan Jean-Yves Dubuisson Donald R. Farrar Susan Fawcett Jose Maria Gabriel y Galan Luiz Armando de Araujo Goes-Neto Jason R. Grant Amanda L. Grusz Christopher Haufler Warren Hauk Hai He Sabine Hennequin Regina Yoshie Hirai Layne Huiet Michael Kessler Petra Korall Paulo H. Labiak Anders Larsson Blanca Leen Chun-Xiang Li Fay-Wei Li Melanie Link-Perez Hong-Mei Liu Ngan Thi Lu Esteban I. Meza-Torres Xin-Yuan Miao Robbin Moran Claudine Massi Mynssens Nathalie Nagalingum Benjamin Ollgaard Alison M. Paul Jovani B. de S. Pereira Leon R. Perrie Monica Ponce Tom A. Ranker Christian Schulz Wataru Shinohara Alexander Shmakov Erin M. Sigel Filipe Soares de Souza Lana da Silva Sylvestre Weston Testo Luz Amparo Triana-Moreno Chie Tsutsumi Hanna Tuomisto IvAn A. Valdespino Alejandra Vasco Raquel Stauffer Viveros Alan Weakley Ran Wei Stina Weststrand Paul G. Wolf George Yatskievych Xiao-Gang Xu Yue-Hong Yan Liang Zhang Xian-Chun Zhang Xin-Mao Zhou 2016Journal of Systematics and Evolution2016,54,6:44
2Petawatt and exawatt class lasers worldwide显示文摘In the 2015 review paper‘Petawatt Class Lasers Worldwide’a comprehensive overview of the current status of highpower facilities of>200 TW was presented.This was largely based on facility specifications,with some description of their uses,for instance in fundamental ultra-high-intensity interactions,secondary source generation,and inertial confinement fusion(ICF).With the 2018 Nobel Prize in Physics being awarded to Professors Donna Strickland and Gerard Mourou for the development of the technique of chirped pulse amplification(CPA),which made these lasers possible,we celebrate by providing a comprehensive update of the current status of ultra-high-power lasers and demonstrate how the technology has developed.We are now in the era of multi-petawatt facilities coming online,with 100 PW lasers being proposed and even under construction.In addition to this there is a pull towards development of industrial and multi-disciplinary applications,which demands much higher repetition rates,delivering high-average powers with higher efficiencies and the use of alternative wavelengths:mid-IR facilities.So apart from a comprehensive update of the current global status,we want to look at what technologies are to be deployed to get to these new regimes,and some of the critical issues facing their development.Colin N.Danson Constantin Haefner Jake Bromage Thomas Butcher Jean-Christophe FChanteloup Enam A.Chowdhury Almantas Galvanauskas Leonida A.Gizzi Joachim Hein David I.Hillier Nicholas W.Hopps Yoshiaki Kato Efim A.Khazanov Ryosuke Kodama Georg Korn Ruxin Li Yutong Li Jens Limpert Jingui Ma Chang Hee Nam David Neely Dimitrios Papadopoulos Rory R.Penman Liejia Qian Jorge J.Rocca andrey A.Shaykin Craig W.Siders Christopher Spindloe Sándor Szatmári Raoul M.G.M.Trines Jianqiang Zhu Ping Zhu Jonathan D.Zuegel 2019High Power Laser Science and Engineering2019,7,3:33
3'Micro-deletions' of the human Y chromosome and their relationship with male infertility显示文摘The Y chromosome evolves from an autochromosome and accumulates male-related genes including sex-determining region of Y-chromosome (SRY) and several spermatogenesis-related genes. The human Y chromosome (60 Mb long) is largely composed of repeti-tive sequences that give it a heterochromatic appearance, and it consists of pseudoautosomal, euchromatic, and heterochromatic regions. Located on the two extremities of the Y chromosome, pseudoautosomal regions 1 and 2 (PAR1 and PAR2, 2.6 Mb and 320 bp long, re-spectively) are homologs with the termini of the X chromosome. The euchromatic region and some of the repeat-rich heterochromatic parts of the Y chromosome are called 'male-specific Y' (MSY), which occupy more than 95% of the whole Y chromosome. After evolu-tion, the Y chromosome becomes the smallest in size with the least number of genes but with the most number of copies of genes that are mostly spermatogenesis-related. The Y chromosome is characterized by highly repetitive sequences (including direct repeats, inverted repeats, and palindromes) and high polymorphism. Several gene rearrangements on the Y chromosome occur during evolution owing to its specific gene structure. The consequences of such rearrangements are not only loss but also gain of specific genes. One hundred and fifty three haplotypes have been discovered in the human Y chromosome. The structure of the Y chromosome in the GenBank belongs to haplotype R1. There are 220 genes (104 coding genes, 111 pseudogenes, and 5 other uncategorized genes) according to the most recent count. The 104 coding genes encode a total of about 48 proteins/protein families (including putative proteins/protein families). Among them, 16 gene products have been discovered in the azoospermia factor region (AZF) and are related to spermatogenesis. It has been dis-covered that one subset of gene rearrangements on the Y chromosome, 'micro-deletions', is a major cause of male infertility in some populations. However, controversies exist about different Y chromosome haplotypes. Six AZFs of the Y chromosome have been discov-ered including AZFa, AZFb, AZFc, and their combinations AZFbc, AZFabc, and partial AZFc called AZFc/gr/gr. Different deletions in AZF lead to different content spermatogenesis loss from teratozoospermia to infertility in different populations depending on their Y hap-lotypes. This article describes the structure of the human Y chromosome and investigates the causes of micro-deletions and their relation-ship with male infertility from the view of chromosome evolution. After analysis of the relationship between AZFc and male infertility, we concluded that spermatogenesis is controlled by a network of genes, which may locate on the Y chromosome, the autochromosomes, or even on the X chromosome. Further investigation of the molecular mechanisms underlying male fertility/infertility will facilitate our knowledge of functional genomics.Zheng Li Christopher J Haines Yibing Han 2008Journal of Genetics and Genomics2008,35,4:25
4A high-resolution clay mineralogical record in the northern South China Sea since the Last Glacial Maximum,and its time series provenance analysis显示文摘High-resolution clay mineralogical analysis of Core MD05-2904 in the northern South China Sea(SCS) covering the period since the Last Glacial Maximum shows that illite(29%-48%),smectite(14%-45%),chlorite(17%-28%),and minor kaolinite(6%-14%) comprise the clay mineral assemblage,and that time series variation does not present glacial-interglacial cyclicity.Provenance analysis indicates three end-member sources:almost all smectite derives from Luzon,all kaolinite is sourced from the Pearl River,and illite and chlorite originate from both the Pearl River and Taiwan.By comparing clay mineral compositions in surface sediments from the three major source areas and of the SCS,we reconstructed a time series of clay mineral contribution from the major provenances to the northern slope of the SCS using the linear separation method for illite crystallinity.There were three stages of provenance change.(1) During 24.1-17.5 ka BP,contributions from Taiwan and Luzon were similar(30%-40%),while that from the Pearl River was only 25%.(2) During 17.5-14.0 ka BP,the contribution from Luzon decreased rapidly to 20%-25%,while that from Taiwan increased to 35% from an average of 25% at 18 ka BP,and that from the Pearl River increased largely to 40%.(3) During the Holocene,differences in contributions from the three major provenances increased:the contribution from Luzon increased slightly and then remained at 27%-35%,that from Taiwan increased rapidly and then remained at 55%-60%,and that from the Pearl River decreased to 15%.The change in clay mineral contributions from different provenances is influenced mainly by clay mineral production,monsoon rainfall denudation,oceanic current transport,and sea-level change.LIU ZhiFei LI XiaJing COLIN Christophe GE HuangMin 2010Chinese Science Bulletin2010,55,35:20
5Surgical decompression in acute spinal cord injury: A review of clinical evidence, animal model studies, and potential future directions of investigation显示文摘为在尖锐针的绳索损害(SCI ) 的治疗的目标是减少第二等的损坏的程度并且便于神经新生和功能的恢复。尽管多重研究为尖锐 SCI 的治疗调查了潜在的新治疗,结果和管理协议在病人在改善瞄准了神经损害仍然保持无效。更最近的临床、基本的科学研究显示了外科的干预是为治疗的一种潜在地珍贵的形式;然而,角色并且外科的解压缩预定除了最佳的外科的干预,仍然是与尖锐 SCI 的外科的治疗相关的最争论的话题之一。当越来越多的潜在的治疗形式出现,动物模型为调查它的临床的申请和翻译进人的审判是枢轴的。这评论极其估价可得到的文学让临床、基本的科学研究加亮调查的程度考虑的那发生的、特定的治疗,和为未来研究的潜在的区域。Yiping LI Chandler L. WALKER Yi Ping ZHANG Christopher B. SHIELDS Xiao-Ming XU 2014Frontiers in Biology2014,9,2:14
6Removing ammonium from water and wastewater using cost-effective adsorbents:A review显示文摘Ammonium is an important nutrient in primary production; however, high ammonium loads can cause eutrophication of natural waterways, contributing to undesirable changes in water quality and ecosystem structure. While ammonium pollution comes from diffuse agricultural sources, making control difficult, industrial or municipal point sources such as wastewater treatment plants also contribute significantly to overall ammonium pollution.These latter sources can be targeted more readily to control ammonium release into water systems. To assist policy makers and researchers in understanding the diversity of treatment options and the best option for their circumstance, this paper produces a comprehensive review of existing treatment options for ammonium removal with a particular focus on those technologies which offer the highest rates of removal and cost-effectiveness. Ion exchange and adsorption material methods are simple to apply, cost-effective, environmentally friendly technologies which are quite efficient at removing ammonium from treated water. The review presents a list of adsorbents from the literature, their adsorption capacities and other parameters needed for ammonium removal. Further, the preparation of adsorbents with high ammonium removal capacities and new adsorbents is discussed in the context of their relative cost, removal efficiencies, and limitations. Efficient, cost-effective, and environmental friendly adsorbents for the removal of ammonium on a large scale for commercial or water treatment plants are provided. In addition, future perspectives on removing ammonium using adsorbents are presented.Jianyin Huang Nadeeka Rathnayake Kankanamge Christopher Chow David T.Welsh Tianling Li Peter R.Teasdale 2018Journal of Environmental Sciences2018,30,1:13
7Epigallocatechin-3-gallate (EGCG) attenuates nflammation in MRL/Ipr mouse mesangial cells显示文摘Abigail Peairs Rujuan Dai Lu Gan Samuel Shimp M Nichole Rylander Liwu Li Christopher M Reilly 2010Cellular & Molecular Immunology2010,7,2:12
8The enhanced X-ray Timing and Polarimetry mission—eXTP显示文摘In this paper we present the enhanced X-ray Timing and Polarimetry mission—eXTP. eXTP is a space science mission designed to study fundamental physics under extreme conditions of density, gravity and magnetism. The mission aims at determining the equation of state of matter at supra-nuclear density, measuring effects of QED, and understanding the dynamics of matter in strong-field gravity. In addition to investigating fundamental physics, eXTP will be a very powerful observatory for astrophysics that will provide observations of unprecedented quality on a variety of galactic and extragalactic objects. In particular, its wide field monitoring capabilities will be highly instrumental to detect the electro-magnetic counterparts of gravitational wave sources.The paper provides a detailed description of:(1) the technological and technical aspects, and the expected performance of the instruments of the scientific payload;(2) the elements and functions of the mission, from the spacecraft to the ground segment.ShuangNan Zhang Andrea Santangelo Marco Feroci YuPeng Xu FangJun Lu Yong Chen Hua Feng Shu Zhang Sφren Brandt Margarita Hernanz Luca Baldini Enrico Bozzo Riccardo Campana Alessandra De Rosa YongWei Dong Yuri Evangelista Vladimir Karas Norbert Meidinger Aline Meuris Kirpal Nandra Teng Pan Giovanni Pareschi Piotr Orleanski QiuShi Huang Stephane Schanne Giorgia Sironi Daniele Spiga Jiri Svoboda Gianpiero Tagliaferri Christoph Tenzer Andrea Vacchi Silvia Zane Dave Walton ZhanShan Wang Berend Winter Xin Wu Jean J.M.in't Zand Mahdi Ahangarianabhari Giovanni Ambrosi Filippo Ambrosino Marco Barbera Stefano Basso Jörg Bayer Ronaldo Bellazzini Pierluigi Bellutti Bruna Bertucci Giuseppe Bertuccio Giacomo Borghi XueLei Cao Franck Cadoux Francesco Ceraudo TianXiang Chen Yu Peng Chen Jerome Chevenez Marta Civitani Wei Cui WeiWei Cui Thomas Dauser Ettore Del Monte Sergio Di Cosimo Sebastian Diebold Victor Doroshenko Michal Dovciak YuanYuan Du Lorenzo Ducci QingMei Fan Yannick Favre Fabio Fuschino JoséLuis Ga'lvez Min Gao MingYu Ge Olivier Gevin Marco Grassi QuanYing Gu YuDong Gu DaWei Han Bin Hong Wei Hu Long Ji ShuMei Jia WeiChun Jiang Thomas Kennedy Ingo Kreykenbohm Irfan Kuvvetli Claudio Labanti Luca Latronico Gang Li MaoShun Li Xian Li Wei Li ZhengWei Li Olivier Limousin HongWei Liu XiaoJing Liu Bo Lu Tao Luo Daniele Macera Piero Malcovati Adrian Martindale Malgorzata Michalska Bin Meng Massimo Minuti Alfredo Morbidini Fabio Muleri Stephane Paltani Emanuele Perinati Antonino Picciotto Claudio Piemonte JinLu Qu Alexandre Rachevski Irina Rashevskaya Jerome Rodriguez Thomas Schanz ZhengXiang Shen LiZhi Sheng JiangBo Song LiMing Song Carmelo Sgro Liang Sun Ying Tan Phil Uttley Bo Wang DianLong Wang GuoFeng Wang Juan Wang LangPing Wang YuSa Wang Anna L.Watts XiangYang Wen Jörn Wilms ShaoLin Xiong JiaWei Yang Sheng Yang YanJi Yang Nian Yu WenDa Zhang Gianluigi Zampa Nicola Zampa Andrzej A.Zdziarski AiMei Zhang ChengMo Zhang Fan Zhang Long Zhang Tong Zhang Yi Zhang XiaoLi Zhang ZiLiang Zhang BaoSheng Zhao ShiJie Zheng Yu Peng Zhou Nicola Zorzi J.Frans Zwart 2019Science China(Physics,Mechanics & Astronomy)2019,62,2:11
9Temperature variations inside Chinese solar greenhouses with external climatic conditions and enclosure materials显示文摘Chinese solar greenhouses enable the extension of the crop growing season in the cold climate in Northern China with little or no additional heating.The temporal variations of the air temperatures inside solar greenhouses located at three cities in North,Northeast and Northwest China were predicted by CFD simulations of the greenhouse systems using typical meteorological data.The predicted temperatures based on the meteorological data in Shenyang are quite similar to the measured temperatures.The results also show that the external air temperatures and solar radiation fluxes play more important roles for the inside temperatures as indicated by the highest inner temperature in the morning on Feb.18 and from 10:00 to 14:00 on Feb.19 in Beijing and by the predicted temperatures inside the greenhouse being higher in Lanzhou than those in Shenyang and Beijing during most of the day.The average daily temperature inside the greenhouse in Lanzhou was nearly 3.5℃higher than that in Shenyang.Predicted air temperatures for various wall designs show that for single walls,the daily average interior temperatures in the aerated concrete wall greenhouse were higher than those in the brick wall and reinforced concrete wall greenhouses.However,the air temperature fluctuations were lower in the reinforced concrete wall greenhouse due to greater thermal storage capacity.The results also show that the temperatures in the layered wall greenhouses are quite similar,which coincides with the experimental results。Tong Guohong David M Christopher Li Tianlai Wang Tieliang 2008International Journal of Agricultural and Biological Engineering2008,1,2:10
10Crystal structure of the swine-origin A (H1N1)- 2009 influenza A virus hemagglutinin (HA) reveals similar antigenicity to that of the 1918 pandemic virus显示文摘Influenza virus is the causative agent of the seasonal and occasional pandemic flu.The current H1N1 influenza pandemic,announced by the WHO in June 2009,is highly contagious and responsible for global economic losses and fatalities.Although the H1N1 gene segments have three origins in terms of host species,the virus has been named swine-origin influenza virus(S-OIV)due to a predominant swine origin.2009 S-OIV has been shown to highly resemble the 1918 pandemic virus in many aspects.Hemagglutinin is responsible for the host range and receptor binding of the virus and is therefore a primary indicator for the potential of infection.Primary sequence analysis of the 2009 S-OIV hemagglutinin(HA)reveals its closest relationship to that of the 1918 pandemic influenza virus,however,analysis at the structural level is necessary to critically assess the functional significance.In this report,we report the crystal structure of soluble hemagglutinin H1(09H1)at 2.9Å,illustrating that the 09H1 is very similar to the 1918 pandemic HA(18H1)in overall structure and the structural modules,including the five defined antiboby(Ab)-binding epitopes.Our results provide an explanation as to why sera from the survivors of the 1918 pandemics can neutralize the 2009 S-OIV,and people born around the 1918 are resistant to the current pandemic,yet younger generations are more susceptible to the 2009 pandemic.Wei Zhang Jianxun Qi Yi Shi Qing Li Feng Gao Yeping Sun Xishan Lu Qiong Lu Christopher J.Vavricka Di Liu Jinghua Yan George F.Gao 2010Protein & Cell2010,1,5:10
11Sintilimab versus docetaxel as second-line treatment in advanced or metastatic squamous non-small-cell lung cancer:an open-label,randomized controlled phase 3 trial(ORIENT-3)显示文摘Background:Treatment options for Chinese patients with locally advanced or metastatic squamous-cell non-small-cell lung cancer(sqNSCLC)after failure of first-line chemotherapy are limited.This study(ORIENT-3)aimed to evaluate the efficacy and safety of sintilimab versus docetaxel as second-line treatment in patients with locally advanced or metastatic sqNSCLC.Methods:ORIENT-3 was an open-label,multicenter,randomized controlled phase 3 trial that recruited patients with stage IIIB/IIIC/IV sqNSCLC after failure with first-line platinum-based chemotherapy.Patients were randomized in a 1:1 ratio to receive either 200 mg of sintilimab or 75 mg/m^(2) of docetaxel intravenously every 3 weeks,stratified by the Eastern Cooperative Oncology Group performance status.The primary endpoint was overall survival(OS)in the full analysis set(FAS).Secondary endpoints included progression-free survival(PFS),objective response rate(ORR),disease control rate(DCR),duration of response(DoR)and safety.Results:Between August 25,2017,and November 7,2018,290 patients were randomized.For FAS,10 patients fromthe docetaxel armwere excluded.Themedian OS was 11.79(n=145;95%confidence interval[CI],10.28-15.57)months with sintilimab versus 8.25(n=135;95%CI,6.47-9.82)months with docetaxel(hazard ratio[HR]:0.74;95%CI,0.56-0.96;P=0.025).Sintilimab treatment significantly prolonged PFS(median 4.30 vs.2.79 months;HR:0.52;95%CI,0.39-0.68;P<0.001)and showed higher ORR(25.50%vs.2.20%,P<0.001)and DCR(65.50%vs.37.80%,P<0.001)than the docetaxel arm.The median DoRwas 12.45(95%CI,4.86-25.33)months in the sintilimab arm and 4.14(95%CI,1.41-7.23)months in the docetaxel arm(P=0.045).Treatment-related adverse events of grade≥3were reported in 26(18.1%)patients in the sintilimab arm and 47(36.2%)patients in the docetaxel arm.Exploratory biomarker analysis showed potential predictive values of expression levels of two transcription factors,including OVOL2(HR:0.35;P<0.001)and CTCF(HR:3.50;P<0.001),for sintilimab treatment.Conclusions:Compared with docetaxel,sintilimab significantly improved the OS,PFS,and ORR of Chinese patients with previously treated locally advanced or metastatic sqNSCLC.Yuankai Shi Lin Wu Xinmin Yu Puyuan Xing Yan Wang Jianying Zhou Airong Wang Jianhua Shi Yi Hu Ziping Wang Guangyu An Yong Fang Sanyuan Sun Caicun Zhou Changli Wang Feng Ye Xingya Li Junye Wang Mengzhao Wang Yunpeng Liu Yanqiu Zhao Ying Yuan Jifeng Feng Zhendong Chen Jindong Shi Tao Sun Gang Wu Yongqian Shu Qisen Guo Yi Zhang Yong Song Shucai Zhang Yuan Chen Wei Li Hongrui Niu Wenwei Hu Lijun Wang Jianan Huang Yang Zhang Ying Cheng Zhengdong Wu Bo Peng Jiya Sun Christoph Mancao Yanqi Wang Luyao Sun 2022Cancer Communications2022,42,12:8
12Inositol Pyrophosphate lnsP8 Acts as an Intracellular Phosphate Signal in Arabidopsis显示文摘The maintenance of cellular phosphate(Pi)homeostasis is of great importance in living organisms.The SPX domain-containing protein 1(SPX1)proteins from both Arabidopsis and rice have been proposed to act as sensors of Pi status.The molecular signal indicating the cellular Pi status and regulating Pi homeostasis in plants,however,remains to be identified,as Pi itself does not bind to the SPX domain.Here,we report the identification of the inositol pyrophosphate lnsP8 as a signaling molecule that regulates Pi homeostasis in Arabidopsis.Polyacrylamide gel electrophoresis profiling of InsPs revealed that lnsP8 level positively cor­relates with cellular Pi concentration.We demonstrated that the homologs of diphosphoinositol pentaki-sphosphate kinase(PPIP5K),VIH1 and VIH2,function redundantly to synthesize lnsP8,and that the vih1 vih2 double mutant overaccumulates Pi.SPX1 directly interacts with PHR1,the central regulator of Pi star­vation responses,to inhibit its function under Pi-replete conditions.However,this interaction is compro­mised in the vih1 vih2 double mutant,resulting in the constitutive induction of Pi starvation-induced genes,indicating that plant cells cannot sense cellular Pi status without lnsP8.Furthermore,we showed that lnsP8 could directly bind to the SPX domain of SPX1 and is essential for the interaction between SPX1 and PHR1.Collectively,our study suggests that lnsP8 is the intracellular Pi signaling molecule serving as the ligand of SPX1 for controlling Pi homeostasis in plants.Jinsong Dong Guojie Ma Liqian Sui Mengwei Wei Viswanathan Satheesh Ruyue Zhang Shenghong Ge Jinkai Li Tong-En Zhang Christopher Wittwer Henning JJessen Huiming Zhang Guo-Yong An Dai-Yin Chao Dong Liu Mingguang Lei 2019Molecular Plant2019,12,11:8
13Experimental study on mechanical behaviors of pseudo-ductile cementitious composites under biaxial compression显示文摘Experimental investigation was conducted to characterize the responses of pseudo-ductile cementitious composites (PDCCs) when subjected to uniaxial and biaxial compression.The PDCCs is a class of fiber reinforced cementitious composites with ultra-high ductility by using a low volume fraction (2%) of polyvinyl alcohol (PVA) fiber.Two different strength grades of PDCC were examined with cubic specimen size of 100 mm in the tests.The specimens were loaded with a servo-hydraulic jack at different stress ratios.The principle stresses and strains of the specimens were recorded,and the failure modes with various stress states were examined.The test results indicated that the ultimate strength of PDCCs increased due to the lateral confinement in the other principal stress direction,and the maximum ultimate strength occurred at the biaxial stress ratio of 0.25,which was very different from common concrete material.For the PDCC specimens,the biaxial strength may be lower than the uniaxial strength when subjected to biaxial compression with the stress ratio of 1.0,and the failure mode showed a shear-type failure because of the bridging effect of fibers.Finally,a failure criterion was proposed for PDCCs under biaxial compression.ZHOU JiaJia PAN JinLong LEUNG Christopher Kin Ying LI ZongJin 2013Science China(Technological Sciences)2013,56,4:8
14MicroRNA396-mediated alteration in plant development and salinity stress response in creeping bentgrass显示文摘The conserved microRNA396(miR396)is involved in plant growth,development,and abiotic stress response in multiple plant species through regulating its targets,Growth Regulating Factor(GRF)transcription factor genes.However,the role of miR396 has not yet been characterized in perennial monocot species.In addition,the molecular mechanism of miR396-mediated abiotic stress response remains unclear.To elucidate the role of miR396 in perennial monocot species,we generated transgenic creeping bentgrass(Agrostis stolonifera)overexpressing Osa-miR396c,a rice miRNA396 gene.Transgenic plants exhibited altered development,including less shoot and root biomass,shorter internodes,smaller leaf area,fewer leaf veins,and epidermis cells per unit area than those of WT controls.In addition,transgenics showed enhanced salt tolerance associated with improved water retention,increased chlorophyll content,cell membrane integrity,and Na^(+)exclusion during high salinity exposure.Four potential targets of miR396 were identified in creeping bentgrass and up-regulated in response to salt stress.RNA-seq analysis indicates that miR396-mediated salt stress tolerance requires the coordination of stress-related functional proteins(antioxidant enzymes and Na+/H+antiporter)and regulatory proteins(transcription factors and protein kinases).This study establishes a miR396-associated molecular pathway to connect the upstream regulatory and downstream functional elements,and provides insight into the miRNA-mediated regulatory networks.Shuangrong Yuan Junming Zhao Zhigang Li Qian Hu Ning Yuan Man Zhou Xiaoxia Xia Rooksie Noorai Christopher Saski Shigui Li Hong Luo 2019Horticulture Research2019,6,1:8
15Al matrix composites fabricated by solid-state cold spray deposition:A critical review显示文摘Cold spraying(CS),or cold gas dynamic spray(CGDS),is an emerging solid-state powder deposition process,allowing fast and mass production and restoration of metallic components.CS of metal matrix composites(MMCs)has attracted increasing attention from academia and industry over the last decades,especially in the area of Al matrix composites(AMCs),which have demonstrated a high potential for applications in aerospace,automotive,and electronics industries.This article aims to summarize the recent development of CS-processed AMCs in terms of composite powder preparation,deposition processing,microstructure evolution,mechanical and corrosion properties.Furthermore,this review also reports the relevant research progress with the focus on post-treatments of the AMCs for CS additive manufacturing applications including heat treatment,hot rolling,and friction stir processing.Finally,the challenges and perspectives on the fabrication of advanced AMCs by CS are addressed.Xinliang Xie Shuo Yin Rija-nirina Raoelison Chaoyue Chen Christophe Verdy Wenya Li Gang ji Zhongming Ren Hanlin Liao 2021Journal of Materials Science & Technology2021,,27:8
16Genomic Analyses Yield Markers for Identifying Agronomically Important Genes in Potato显示文摘野土豆种类有实质的 phenotypic 和生理的差异。这里,我们基于茄属节 Petota 的 201 就职的 genomic 分析报导对野、栽培的土豆种类的一个全面评价。我们定序这 201 就职的染色体并且识别了 6 ? 487 ? 从在 clade 的 167 就职的 006 高质量的单个核苷酸多型性(SNP ) 4 茄属节 Petota,包括 146 野并且有宽广地理分布的 21 栽培双土豆就职。染色体宽的基因变化分析比栽培土豆,和在农学地重要的疾病抵抗的高得多的基因差异,基因在野土豆被观察的证明野土豆的差异高。由关于已知的量的特点 loci (QTL ) 利用信息,而且,我们在选择下面识别了 609 基因,包括那些在 tubers 与痛苦的损失相关,那些在 tuberization 包含了,土豆的二个主要驯养的特点。种系发生的分析在 clade 揭示了所有种类的一个纵贯的部门 4,不是就那些在 S.? brevicaule 建筑群,和进一步支持的 S。是的 candolleanum 栽培土豆和在南部的秘鲁的栽培土豆的 monophyletic 起源的祖先。另外,我们分析了 S. 的染色体 ? candolleanum 并且鉴别 529 基因在栽培土豆输了。一起,在这研究产生的分子的标记为为土豆繁殖有用的农学地重要的基因的鉴定提供一个珍贵资源。Yangping Li Christophe Colleoni Junjie Zhang Qiqi Liang Yufeng Hu Holly Ruess Reinhard Simon Yinghong Liu Hanmei Liu Guowu Yu Eric Schmitt Ghloe Ponitzki Guangjian Liu Huanhuan Huang Feilong Zhan Lin Chen Yubi Huang David Spooner Binquan Huang 2018Molecular Plant2018,11,3:8
17Vitamin B12 modulates Parkinson’s disease LRRK2 kinase activity through allosteric regulation and confers neuroprotection显示文摘Missense mutations in Leucine-Rich Repeat Kinase 2(LRRK2)cause the majority of familial and some sporadic forms of Parkinson’s disease(PD).The hyperactivity of LRRK2 kinase induced by the pathogenic mutations underlies neurotoxicity,promoting the development of LRRK2 kinase inhibitors as therapeutics.Many potent and specific small-molecule LRRK2 inhibitors have been reported with promise.However,nearly all inhibitors are ATP competitive—some with unwanted side effects and unclear clinical outcome—alternative types of LRRK2 inhibitors are lacking.Herein we identify 5′-deoxyadenosylcobalamin(AdoCbl),a physiological form of the essential micronutrient vitamin B12 as a mixed-type allosteric inhibitor of LRRK2 kinase activity.Multiple assays show that AdoCbl directly binds LRRK2,leading to the alterations of protein conformation and ATP binding in LRRK2.STD-NMR analysis of a LRRK2 homologous kinase reveals the contact sites in AdoCbl that interface with the kinase domain.Furthermore,we provide evidence that AdoCbl modulates LRRK2 activity through disrupting LRRK2 dimerization.Treatment with AdoCbl inhibits LRRK2 kinase activity in cultured cells and brain tissue,and prevents neurotoxicity in cultured primary rodent neurons as well as in transgenic C.elegans and D.melanogaster expressing LRRK2 disease variants.Finally,AdoCbl alleviates deficits in dopamine release sustainability caused by LRRK2 disease variants in mouse models.Our study uncovers vitamin B12 as a novel class of LRRK2 kinase modulator with a distinct mechanism,which can be harnessed to develop new LRRK2-based PD therapeutics in the future.Adam Schaffner Xianting Li Yacob Gomez-Llorente Emmanouela Leandrou Anna Memou Nicolina Clemente Chen Yao Farinaz Afsari Lianteng Zhi Nina Pan Keita Morohashi Xiaoluan Hua Ming-Ming Zhou Chunyu Wang Hui Zhang Shu G.Chen Christopher J.Elliott Hardy Rideout Iban Ubarretxena-Belandia Zhenyu Yue 2019Cell Research2019,29,4:7
18Impact of cash crop cultivation on household income and migration decisions:Evidence from low-income regions in China显示文摘This study examines the impact of cash crop cultivation on household income and migration decisions,using survey data collected from low-income regions in China.Given farmers decide themselves whether to cultivate cash crops,an endogenous treatment regression model that accounts for potential selection bias issue is used to analyze the data.The empirical results show that cash crop cultivation exerts a positive and statistically significant impact on household income,but it does not affect household migration decisions significantly.The disaggregated analyses reveal that cash crop cultivation significantly increases farm income but decreases off-farm income.LI Meng Christopher GAN Wanglin MA Wei JIANG 2020Journal of Integrative Agriculture2020,19,10:7
19Prediction of the severity of acute pancreatitis on admission by urinary trypsinogen activation peptide: A meta-analysis显示文摘AIM: To undertake a meta-analysis on the value of urinary trypsinogen activation peptide (uTAP) in predicting severity of acute pancreatitis on admission. METHODS: Major databases including Medline, Embase, Science Citation Index Expanded and the Cochrane Central Register of Controlled Trials in the Cochrane Library were searched to identify all relevant studies from January 1990 to January 2013. Pooled sensitivity, specificity and the diagnostic odds ratios (DORs) with 95%CI were calculated for each study and were compared to other systems/biomarkers if mentioned within the same study. Summary receiver-operating curves were conducted and the area under the curve (AUC) was evaluated. RESULTS: In total, six studies of uTAP with a cut-off value of 35 nmol/L were included in this meta-analysis. Overall, the pooled sensitivity and specificity of uTAP for predicting severity of acute pancreatitis, at time of admission, was 71% and 75%, respectively (AUC = 0.83, DOR = 8.67, 95%CI: 3.70-20.33). When uTAP was compared with plasma C-reactive protein, the pooled sensitivity, specificity, AUC and DOR were 0.64 vs 0.67, 0.77 vs 0.75, 0.82 vs 0.79 and 6.27 vs 6.32, respectively. Similarly, the pooled sensitivity, specificity, AUC and DOR of uTAPvs Acute Physiology and Chronic Health Evaluation Ⅱ within the first 48 h of admission were found to be 0.64 vs 0.69, 0.77 vs 0.61, 0.82 vs 0.73 and 6.27vs 4.61, respectively. CONCLUSION: uTAP has the potential to act as a stratification marker on admission for differentiating disease severity of acute pancreatitis.Wei Huang Kiran Altaf Tao Jin Jun-Jie Xiong Li Wen Muhammad A Javed Marianne Johnstone Ping Xue Christopher M Halloran Qing Xia 2013World Journal of Gastroenterology2013,19,28:7
20Oroclinal bending and block rotations in South China since the Mesozoic——Geological and paleomagnetic evidence显示文摘THE South China Block exhibits a complex structural pattern in its Neoproterozoic-Mesozoic sedimentary cover. The lack of knowledge about the formation of this pattern hinders our understanding of the regional tectonic evolution and paleogeography, and the reconstruction of Phanerozoic apparent polar wander path(s). In this note we present a synthesis based on a paleomagnetic and tectonic analysis, which suggests that (i) the structural pattern overLI Zhengxiang, FANG Dajun, Christopher McA. Powell and LOU Gang1. Department of Geology and Geophysics, The University of Western Australia, Nedlands WA 6907, Australia 2. Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China 1997Chinese Science Bulletin1997,42,2:7
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