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209篇 您的检索式:作者名="Weiwei Sun"
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1Homocysteine-mediated cholesterol efflux via ABCA1 and ACAT1 DNA methylation in THP-1 monocyte-derived foam cells显示文摘Homocysteine (Hcy ) 为心血管的事件作为一个流行风险因素被认出了。装载胆固醇的泡沫房间是动脉粥样硬化患者损害的一个中央部件。ATP 有约束力的盒子 transporter A1 (ABCA1 ) 它调停细胞的胆固醇和 phospholipids 的流出,是在类脂化合物的限制率的步新陈代谢。酰辅酶 A:cholesterol acyltransferase-1 (ACAT1 ) 在巨噬细胞支持胆固醇酉旨的累积,从而导致泡沫房间形成,在动脉粥样硬化的早舞台的一个特点。在这研究,有教养的导出单核白血球的泡沫房间为 24 h 与 Hcy 的临床的相关集中被孵化。胆固醇的房间和累积被发现的泡沫的两个都增加的数字,和 ABCA1 的 mRNA 和蛋白质表示层次被减少,当 ACAT1 表示面对 Hcy 被增加时。而且,而 ACAT1 DNA methylation 被使用 Hcy 的不同集中减少, ABCA1 基因的 DNA methylation 水平被增加。而且,我们的结果显示出那项 DNA methyltransferase (DNMT ) 活动和 DNA methyltransferase 1 (DNMT1 ) mRNA 表示被 Hcy 增加。DNA methylation 有功能经由 DNMT 调整 ABCA1 和 ACAT1 的表示,这被显示。在结论,这些结果建议 Hcy 导致的 ABCA1 和 ACAT1 DNA methylation 可以在导出单核白血球的泡沫房间在 ABCA1 和 ACAT1 表示和胆固醇的累积起一个潜在的作用。Yu Liang Xiaoling Yang Linna Ma Xin Cai Lei Wang Cheng Yang Guizhong Li Minghao Zhang Weiwei Sun Yideng Jiang 2013Acta Biochimica et Biophysica Sinica2013,45,3:26
2Sonodynamic therapy(SDT): a novel strategy for cancer nanotheranostics显示文摘Sonodynamic therapy(SDT) is a promising non-invasive therapeutic modality. Compared to photo-inspired therapy, SDT provides many opportunities and benefits, including deeper tissue penetration, high precision, less side effects, and good patient compliance. Thanks to the facile engineerable nature of nanotechnology, nanoparticles-based sonosensitizers exhibit predominant advantages, such as increased SDT efficacy, binding avidity, and targeting specificity. This review aims to summarize the possible mechanisms of SDT, which can be expected to provide the theoretical basis for SDT development in the future. We also extensively discuss nanoparticle-assisted sonosensitizers to enhance the outcome of SDT. Additionally, we focus on the potential strategy of combinational SDT with other therapeutic modalities and discuss the limitations and challenges of SDT toward clinical applications.Xueting Pan Hongyu Wang Shunhao Wang Xiao Sun Lingjuan Wang Weiwei Wang Heyun Shen Huiyu Liu 2018Science China(Life Sciences)2018,61,4:26
3Design and Experiment of PZT Network-based Structural Health Monitoring Scanning System显示文摘基于主动Lamb波和压电传感器网络的结构健康监测技术是一种评估航空结构健康状态的有效方法。在实际应用中,监测大型结构需要使用压电传感器网络。扫查这些压电传感器网络中的压电激励-传感通道以达到在线的结构健康监测是非常重要的。基于PXI(PCI eXtensions for Instrumentation)平台,研发了一套基于主动Lamb波和压电传感器网络的集成多通道扫查系统,该系统结构紧凑、便于携带,能大规模自动扫查激励-传感通道并进行损伤评估。提出和讨论了该系统中:4通道PXI程控增益电荷放大器的实现、支持276个激励-传感通道的外部扫查模块和集成的结构健康监测软件的实现。最后,主要讨论了系统在某型无人机碳纤维复合材料机翼盒段上的功能验证实验,包括:压电贴层的设计、激励信号频率的选择方法、损伤成像的功能性测试、系统稳定性测试和载荷对信号的影响。实验结果验证了该系统的稳定性和损伤监测功能。Qiu Lei Yuan Shenfang Wang Qiang Sun Yajie Yang Weiwei 2009Chinese Journal of Aeronautics2009,22,5:23
4A Model to Predict Stall Inception of Transonic Axial Flow Fan/Compressors显示文摘A stall inception model for transonic fan/compressors is presented in this paper. It can be shown that under some assumptions the solution of unsteady flow field consists of pressure wave which propagates upstream or downstream, vortex wave and entropy wave convected with the mean flow speed. By further using the mode-matching technique and applying the conservation law and conditions reflecting the loss characteristics of a compressor in the inlet and outlet of the rotor or stator blade rows, a group of homogeneous equations can be obtained from which the stability equation can be derived. Based on the analysis of the unsteady phenomenon caused by casing treatments, the function of casing treatments has been modeled by a wall impedance condition which has been included in the stability model through the eigenvalues and the corresponding eigenfunctions of the system. Besides, the effect of shock waves in cascade channel on the stability prediction is also considered in the stall inception model. Finally, some numerical analysis and experimental investigation are also conducted with emphasis on the mutual comparison.SUN Xiaofeng SUN Dakun YU Weiwei 2011Chinese Journal of Aeronautics2011,24,6:20
5Methane and nitrous oxide concentration and emission flux of Yangtze Delta plain river net显示文摘Methane (CH4) and nitrous oxide (N2O) saturation concentration and gas-water interface emission flux in surface water of the Yangtze Delta plain river net were investigated in summer at representative sites including the upper reaches of the Huangpu River and the rivers in the Chongming Island. The results show that the CH4 concentration in river water ranged from 0.30±0.03 to 6.66±0.14 μmol.L-1, and N2O concentration ranged from 13.8±2.33 to 435±116 nmol.L-1. River surface water had a very high satura- tion level of CH4 (from 468±49.0% to 11560±235%) and that of N2O (from 175±29.5% to 4914±1304%). Dissolved oxygen (DO) was the primary factor controlling the CH4 concentration in water. N2O concentration had significant negative correlation with salinity and a significant positive correlation with nitrate (NO3-), nitrite (NO2-), chemical oxygen demand (CODcr) concentration and pH of river water. CH4 and N2O of river water were brought about mainly by methanogenesis and denitrification in river bottom sediment that diffused through sediment-water interface into the water body and then into atmosphere through the gas-water interface. The emission flux of CH4 and N2O at river gas-water interface reached 778±59.8 and 236±63.6 μmol.m-2.h-1, respectively in summer. The river net was a potential source of atmospheric CH4 and N2O because of eutrophication of the water body.WANG DongQi CHEN ZhenLou SUN WeiWei HU BeiBei XU ShiYuan 2009Science China Chemistry2009,52,5:19
6The comprehensive effects of hyperlipidemia and hyperhomocysteinemia on pathogenesis of atherosclerosis and DNA hypomethylation in ApoE-/- mice显示文摘动脉粥样硬化(作为) 疾病被多重因素导致,包括基因、环境的元素。现在的学习的目的是在致病上调查高胆固醇,高蛋氨酸食谱,和 apolipoprotein E 缺乏(ApoE/) 的全面效果作为。ApoE/ 老鼠用高胆固醇和蛋氨酸饮食被喂 15 个星期导致 hyperlipidemia 和 hyperhomocysteinemia。genomic DNA (gDNA ) 和 B1 的 methylation 层次在大动脉的纸巾的重复元素被两 methylation 依赖的限制分析测量并且嵌套 methylation 特定的聚合酶链反应(PCR ) 。Methylation 顺序偏爱模式是由有限制 endonuclease 消化的 DNA 接受甲基的能力的 assayed。DNA methyltransferase-1 的 mRNA 表示, 3 (DNMT1, 3 ) 被即时 PCR 检测。S-adenosylmethionine (SAM ) 和 S-adenosylhomocysteine (SAH ) 的集中被高效的液体层析决定。结果显示出 gDNA 和 B1 的 hypomethylation 重复元素。DNMT1 的 mRNA 表示被减少。SAM, SAH,和 SAM/SAH 比率的层次被增加。动脉粥样硬化患者损害区域强烈与风险因素相关。DNA demethylation 的分发被喜欢而不是 non-CpG 岛,它可以在 DNA 正直和 genomic 不稳定性上建议 hypomethylation 的主要影响。总的来说,我们的数据不含糊地证明高胆固醇,高蛋氨酸食谱,和 ApoE/ 的全面角色不与一个单个风险因素的角色一致地一致。DNA methylation 模式在这是相当复杂的并且取决于基因背景和许多深奥风险因素。Yideng Jiang Huiping Zhang Tao Sun Ju Wang Weiwei Sun Huihui Gong Binbin Yang Yingkang Shi Jun Wei 2012Acta Biochimica et Biophysica Sinica2012,44,10:16
7MicroRNA-663 induces immune dysregulation by inhibiting TGF-β1 production in bone marrow-derived mesenchymal stem cells in patients with systemic lupus erythematosus显示文摘Mesenchymal stem cells(MSCs)are critical for immune regulation.Although several microRNAs(miRNAs)have been shown to participate in autoimmune pathogenesis by affecting lymphocyte development and function,the roles of miRNAs in MSC dysfunction in autoimmune diseases remain unclear.Here,we show that patients with systemic lupus erythematosus(SLE)display a unique miRNA signature in bone marrow-derived MSCs(BMSCs)compared with normal controls,among which miR-663 is closely associated with SLE disease activity.MiR-663 inhibits the proliferation and migration of BMSCs and impairs BMSC-mediated downregulation of follicular T helper(Tfh)cells and upregulation of regulatory T(Treg)cells by targeting transforming growth factorβ1(TGF-β1).MiR-663 overexpression weakens the therapeutic effect of BMSCs,while miR-663 inhibition improves the remission of lupus disease in MRL/lpr mice.Thus,miR-663 is a key mediator of SLE BMSC regulation and may serve as a new therapeutic target for the treatment of lupus.Linyu Geng Xiaojun Tang Kangxing Zhou Dandan Wang Shiying Wang Genhong Yao Weiwei Chen Xiang Gao Wanjun Chen Songtao Shi Nan Shen Xuebing Feng Lingyun Sun 2019Cellular & Molecular Immunology2019,16,3:16
8Dual-Source Nuclear Monomers of UV-B Light Receptor Direct Photomorphogenesis in Arabidopsis显示文摘Qian, Chongzhen Mao, Weiwei Liu, Yan Ren, Hui Lau, On Sun Ouyang, Xinhao Huang, Xi 2016Molecular Plant2016,9,12:14
9Hyperhomocysteinemia induces cardiac injury by up-regulation of p53-dependent Noxa and Bax expression through the p53 DNA methylation in ApoE-/- mice显示文摘Hyperhomocysteinemia (HHcy ) 是为心血管的疾病的一个风险因素并且与心失败有强壮的关联。然而,心脏的织物上的 HHcy 的效果仍然保持不太好理解。阐明在导致 HHcy 的心脏的损害的 p53 依赖的 apoptosis 的角色,我们用高蛋氨酸饮食喂了 ApoE/ 老鼠建立 HHcy 模型。浆液 Hcy,心脏的酶,和类脂化合物被测量。Noxa, DNMT1, caspases-3/9,和 p53 的蛋白质层次被连接酶的 immunosorbent 试金决定。Bcl-2 和 Bax 蛋白质被染色的 immunohistochemistry 检测。S-adenosyl 蛋氨酸和 S-adenosyl homocysteine 集中被高效的液体层析决定。p53 和 DNMT1 的 mRNA 层次被即时聚合酶链反应(PCR ) 分析, p53 的 methylation 层次被嵌套的 methylation-specific-PCR 分析。我们的数据证明浆液 Hcy 和类脂化合物的集中与 N 控制组相比在 Meth 组被增加,它显示模型成功地被建立。p53 和 Noxa 的表示层次在 Meth 组被增加,当 p53 的 methylation 地位是 hypomethylation 时。caspase-3/9 的活动与 N 控制组相比在 Meth 组被增加。另外,染色的 immunohistochemistry 证明 Bax 的表示显著地与 N 控制组相比在 Meth 和 Meth-F 组被增加。在摘要, HHcy 由 p53 依赖的 pro-apoptotic 的起来规定导致心脏的损害联系了基因 Noxa 和 Bax,当 p53 DNA hypomethylation 是在 HHcy 导致的病理学的过程的关键分子的机制时。ShengchaoMa Huiping Zhang Weiwei Sun HuiHui Gong YanhuaWang Changjian Ma Ju Wang Chengjian Cao Xiaoling Yang Jue Tian Yideng Jiang 2013Acta Biochimica et Biophysica Sinica2013,45,5:12
10Insight-HXMT observations of the first binary neutron star merger GW170817显示文摘Finding the electromagnetic(EM) counterpart of binary compact star merger, especially the binary neutron star(BNS) merger,is critically important for gravitational wave(GW) astronomy, cosmology and fundamental physics. On Aug. 17, 2017,Advanced LIGO and Fermi/GBM independently triggered the first BNS merger, GW170817, and its high energy EM counterpart,GRB 170817 A, respectively, resulting in a global observation campaign covering gamma-ray, X-ray, UV, optical, IR, radio as well as neutrinos. The High Energy X-ray telescope(HE) onboard Insight-HXMT(Hard X-ray Modulation Telescope) is the unique high-energy gamma-ray telescope that monitored the entire GW localization area and especially the optical counterpart(SSS17 a/AT2017 gfo) with very large collection area(~1000 cm^2) and microsecond time resolution in 0.2-5 MeV. In addition,Insight-HXMT quickly implemented a Target of Opportunity(ToO) observation to scan the GW localization area for potential X-ray emission from the GW source. Although Insight-HXMT did not detect any significant high energy(0.2-5 MeV) radiation from GW170817, its observation helped to confirm the unexpected weak and soft nature of GRB 170817 A. Meanwhile,Insight-HXMT/HE provides one of the most stringent constraints(~10^(-7) to 10^(-6) erg/cm^2/s) for both GRB170817 A and any other possible precursor or extended emissions in 0.2-5 MeV, which help us to better understand the properties of EM radiation from this BNS merger. Therefore the observation of Insight-HXMT constitutes an important chapter in the full context of multi-wavelength and multi-messenger observation of this historical GW event.TiPei Li ShaoLin Xiong ShuangNan Zhang FangJun Lu LiMing Song XueLei Cao Zhi Chang Gang Chen Li Chen TianXiang Chen Yong Chen YiBao Chen YuPeng Chen Wei Cui WeiWei Cui JingKang Deng YongWei Dong YuanYuan Du MinXue Fu GuanHua Gao He Gao Min Gao MingYu Ge YuDong Gu Ju Guan ChengCheng Guo DaWei Han Wei Hu Yue Huang Jia Huo ShuMei Jia LuHua Jiang WeiChun Jiang Jing Jin YongJie Jin Bing Li ChengKui Li Gang Li MaoShun Li Wei Li Xian Li XiaoBo Li XuFang Li YanGuo Li ZiJian Li ZhengWei Li XiaoHua Liang JinYuan Liao CongZhan Liu GuoQing Liu HongWei Liu ShaoZhen Liu XiaoJing Liu Yuan Liu YiNong Liu Bo Lu XueFeng Lu Tao Luo Xiang Ma Bin Meng Yi Nang JianYin Nie Ge OU JinLu Qu Na Sai Liang Sun Yin Tan Lian Tao WenHui Tao YouLi Tuo GuoFeng Wang HuanYu Wang Juan Wang WenShuai Wang YuSa Wang XiangYang Wen BoBing WU Mei Wu GuangCheng Xiao He Xu YuPeng Xu LinLi Yan JiaWei Yang Sheng Yang YanJi Yang AiMei Zhang ChunLei Zhang ChengMo Zhang Fan Zhang HongMei Zhang Juan Zhang Qiang Zhang Shu Zhang Tong Zhang Wei Zhang WanChang Zhang WenZhao Zhang Yi Zhang Yue Zhang YiFei Zhang YongJie Zhang Zhao Zhang ZiLiang Zhang HaiSheng Zhao JianLing Zhao XiaoFan Zhao ShiJie Zheng Yue Zhu YuXuan Zhu ChangLin Zou 2018Science China(Physics,Mechanics & Astronomy)2018,61,3:12
11The 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
12Biomimetic injectable hydrogel microspheres with enhanced lubrication and controllable drug release for the treatment of osteoarthritis显示文摘The occurrence of osteoarthritis(OA)is highly associated with the reduced lubrication property of the joint,where a progressive and irreversible damage of the articular cartilage and consecutive inflammatory response dominate the mechanism.In this study,bioinspired by the super-lubrication property of cartilage and catecholamine chemistry of mussel,we successfully developed injectable hydrogel microspheres with enhanced lubrication and controllable drug release for OA treatment.Particularly,the lubricating microspheres(GelMA@DMA-MPC)were fabricated by dip coating a self-adhesive polymer(DMA-MPC,synthesized by free radical copolymerization)on superficial surface of photo-crosslinked methacrylate gelatin hydrogel microspheres(GelMA,prepared via microfluidic technology),and encapsulated with an anti-inflammatory drug of diclofenac sodium(DS)to achieve the dual-functional performance.The tribological test and drug release test showed the enhanced lubrication and sustained drug release of the GelMA@DMA-MPC microspheres.In addition,the functionalized microspheres were intra-articularly injected into the rat knee joint with an OA model,and the biological tests including qRT-PCR,immunofluorescence staining assay,X-ray radiography and histological staining assay all revealed that the biocompatible microspheres provided significant therapeutic effect against the development of OA.In summary,the injectable hydrogel microspheres developed herein greatly improved lubrication and achieved sustained local drug release,therefore representing a facile and promising technique for the treatment of OA.Ying Han Jielai Yang Weiwei Zhao Haimang Wang Yulong Sun Yuji Chen Jing Luo Lianfu Deng Xiangyang Xu Wenguo Cui Hongyu Zhang 2021Bioactive Materials2021,6,10:8
13An increase in corn resistant starch decreases protein fermentation and modulates gut microbiota during in vitro cultivation of pig large intestinal inocula显示文摘High-protein diet could cause an increase in protein fermentation in the large intestine, leading to an increased production of potentially detrimental metabolites. We hypothesized that an increase in corn resistant starch content may attenuate the protein fermentation. The aim of this study was to evaluate the effect of resistant starch on protein fermentation by inocula from large intestine of pigs using in vitro cultivation. Fermentation patterns were analyzed during a 24-h incubation of cecal and colonic digesta with varying corn resistant starch contents, using casein protein as sole nitrogen source. The results showed that the concentration of short-chain fatty acids(SCFA) and cumulative gas production were significantly increased(P < 0.05), while ammonia-nitrogen(NH_3-N) and branched-chain fatty acids(BCFA), which indicated protein fermentation, decreased when the corn resistant starch levels increased(P < 0.05). The copies of total bacteria, Bifidobacterium and Lactobacillus were significantly increased with the increased corn resistant starch levels after incubation(P < 0.05). The copies of the Bifidobacterium and Lactobacillus in cecum were significantly higher than those in colon(P < 0.05). We conclude that the addition of corn resistant starch weakens the protein fermentation by influencing microbial population and reducing protein fermentation in the cecum and colon in vitro.Xiangyu He Weiwei Sun Ting Ge Chunlong Mu Weiyun Zhu 2017Animal Nutrition2017,,3:8
14Integrated transcriptomic and metabolomic analyses of a wax deficient citrus mutant exhibiting jasmonic acid-mediated defense against fungal pathogens显示文摘Naturally,resistant crop germplasms are important resources for managing the issues of agricultural product safety and environment deterioration.We found a spontaneous mutant of‘Newhall’navel orange(Citrus sinensis Osbeck)(MT)with broad-spectrum protections against fungal pathogens in the orchard,postharvest-storage,and artificial inoculation conditions.To understand the defense mechanism of MT fruit,we constructed a genome-scale metabolic network that integrated metabolome and transcriptome datasets.The coordinated transcriptomic and metabolic data were enriched in two sub-networks,showing the decrease in very long chain fatty acid(by 41.53%)and cuticular wax synthesis(by 81.34%),and increase in the synthesis of jasmonic acid(JA)(by 95.23%)and JA-induced metabolites such as 5-dimethylnobietin(by 28.37%)in MT.Furthermore,cytological and biochemical analyses confirmed that the response to fungal infection in MT was independent of wax deficiency and was correlated with the levels of jasmonates,and the expression of plant defensin gene PDF1.2.Results of exogenous application of MeJA and JA inhibitors such as propyl gallate proved that JA-mediated defense contributes to the strong tolerance against pathogens in MT.Our results indicated that jasmonate biosynthesis and signaling are stimulated by the fatty acid redirection of MT,and participate in the tolerance of pathogenic fungi.Yizhong He Jingwen Han Runsheng Liu Yuduan Ding Jinqiu Wang Li Sun Xiaoming Yang Yunliu Zeng Weiwei Wen Juan Xu Hongming Zhang Xiang Yan Zhaoxing Chen Zuliang Gu Hong Chen Huanqing Tang Xiuxin Deng Yunjiang Cheng 2018Horticulture Research2018,5,1:8
15Determination of Complexity Factor and Its Relationship with Accuracy of Representation for DEM Terrain显示文摘Based on the estimating rule of the normal vector angles between two adjacent terrain units,we use the concept of terrain complexity factor to quantify the terrain complexity of DEM,and then the formula of terrain complexity factor in Raster DEM and TIN DEM is deduced theoretically.In order to make clear how the terrain complexity factor CF E and the average elevation h affect the accuracy of DEM terrain representation RMSE,Et the formula of Gauss synthetical surface is applied to simulate several real terrain surfaces,each of which has different terrain complexity.Through the statistical analysis of linear regression in simulation data,the linear equation between accuracy of DEM terrain representation RMSE,Et terrain complexity factor CF E and the average elevation h is achieved.A new method is provided to estimate the accuracy of DEM terrain representation RMSE Et with a certain terrain complexity and it gives convincing theoretical evidence for DEM production and the corresponding error research in the future.LIU Chun SUN Weiwei WU Hangbin 2010Geo-Spatial Information Science2010,13,4:8
16Defects as a factor limiting carrier mobility in WSe2: A spectroscopic investigation显示文摘二维的转变金属 dichalcogenides (TMD ) 的电的表演被结构的缺点的数字强烈影响。在这个工作,我们提供一条光分光镜的描述途径相关结构的缺点的数字和 WSe 2 设备的电的表演。electron-beam-lithographyprocessed WSe 2 的低温度的光致发光(PL ) 系列由于缺点一定的激子展出清楚的导致缺点的 PL 排出物,它将强烈降级电的表演。由采用一种 electron-beam-free 转移电极技术,我们成功地准备了包含缺点的有限数量的一台 backgated WSe 2 设备。约 200 厘米 2Zhangting Wu Zhongzhong Luo Yuting Shen Weiwei Zhao Wenhui Wang Haiyan Nan Xitao Guo Litao Sun Xinran Wang Yumeng You Zhenhua Ni 2016Nano Research2016,9,12:8
17Isolation,structural determination and cytotoxic activity of two new ceramides from the root of Isatis indigotica显示文摘Two new ceramides were isolated from the 95% EtOH extract of traditional Chinese medicinal plant Isatis indigotica. Their structures were elucidated as 1-O-β-D-glucopyranosyl-(2S, 3R)-N-(2'-hydroxypentacosanoyl)-octadeca-11E-sphingenine (1) and 1-O-β-D-glucopyranosyl-(2S,3R)-N-(2'-hydroxyhe xacosanoyl)-octadeca-11E-sphingenine (2) on the basis of spectroscopic data. Their cytotoxic effects were evaluated by using MTT method.SUN DongDong DONG WeiWei LI Xiang ZHANG HanQing 2009Science China Chemistry2009,52,5:7
18Diterpenoid UDP-Glycosyltransferases from Chinese Sweet Tea and Ashitaba Complete the Biosynthesis of Rubusoside显示文摘Yuwei Sun Zhuo Chen Jianxu Li Jianhua Li Huajun LV Jingya Yang Weiwei Li Dingan Xie Zhiqiang Xiong Peng Zhang Yong Wang 2018Molecular Plant2018,11,10:7
19Characterization of the soybean Gm ALMT family genes and the function of Gm ALMT5 in response to phosphate starvation显示文摘A potential mechanism to enhance utilization of sparingly soluble forms of phosphorus(P) is the root secretion of malate, which is mainly mediated by the ALMT gene family in plants. In this study, a total of 34 Gm ALMT genes were identified in the soybean genome. Expression patterns diverged considerably among Gm ALMTs in response to phosphate(Pi) starvation in leaves, roots and flowers, with expression altered by P availability in 26 of the 34 Gm ALMTs. One root-specific Gm ALMT whose expression was significantly enhanced by Pi-starvation,Gm ALMT_5, was studied in more detail to determine its possible role in soybean P nutrition. Analysis of Gm ALMT_5 tissue expression patterns, subcellular localization, and malate exudation from transgenic soybean hairy rootsoverexpressing Gm ALMT_5, demonstrated that Gm ALMT_5 is a plasma membrane protein that mediates malate efflux from roots. Furthermore, both growth and P content of transgenic Arabidopsis overexpressing Gm ALMT_5 were significantly increased when sparingly soluble Ca-P was used as the external P source. Taken together, these results indicate that members of the soybean Gm ALMT gene family exhibit diverse responses to Pi starvation. One member of this family, Gm ALMT_5, might contribute to soybean P efficiency by enhancing utilization of sparingly soluble P sources under P limited conditions.Wenting Peng Weiwei Wu Junchu Peng Jiaojiao Li Yan Lin Yanan Wang Jiang Tian Lili Sun Cuiyue Liang Hong Liao 2018Journal of Integrative Plant Biology2018,60,3:7
20Determination of PCDD/Fs and dioxin-like PCBs in food and feed using gas chromatography-triple quadrupole mass spectrometry显示文摘A method was developed on a gas chromatograph coupled to a triple quadrupole mass spectrometer(GC-MS/MS) for trace level determination of polychlorinated dibenzo-p-dioxins/dibenzofurans(PCDD/Fs) and dioxin-like polychlorinated biphenyls(DL-PCBs) in food and feed. The results demonstrated good sensitivity and repeatability for PCDD/Fs and DL-PCBs at an extremely low level(10 pg mL^(-1) for 2,3,7,8-TCDD/F), as well as wide linear response of over 3 or 4 orders of magnitude in concentration ranges; 0.5–200 ng mL^(-1) for PeCDD/F and 0.2–2000 ng mL^(-1) for DL-PCBs. The method detection limits for PCDD/Fs and DL-PCBs were in the range from 0.018–0.17 pg g^(-1) to 0.13–0.36 pg g^(-1), respectively. The performance of the GC-MS/MS for food and feed sample analysis showed high precision and accuracy compared to the high resolution gas chromatograph/high resolution mass spectrometer. The results indicated the feasibility of GC-MS/MS as a confirmatory method for the measurement of PCDD/Fs and DL-PCBs in food and feed as required by European Union legislation.Huizhong Sun Pu Wang Honghua Li Yingming Li Shucheng Zheng Julius Matsiko Yanfen Hao Weiwei Zhang Dou Wang Qinghua Zhang 2017Science China Chemistry2017,60,5:6
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