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61篇 您的检索式:作者名="Su Weiwei"
    题名 作者 年代 出处 被引量
1Genome-Wide Analysis of Histone Modifications: H3K4me2, H3K4me3, H3K9ac, and H3K27ac in Oryza sativa L. Japonica显示文摘当以前的研究证明了 histone 修正能由调整基因抄写影响工厂生长和开发时,在这些修正和基因表示之间的关系的知识仍然是有限的。这研究使用了高产量的定序跟随的染色质 immunoprecipitation (ChIP-Seq ) ,到调查四 histone 修正的染色体宽的分发:H3K4 (H3K4me2 和 H3K4me3 ) 和在 Oryza sativa L 的 H3K9 和 H3K27 (H3K9ac 和 H3K27ac ) 的 acylation 的 di 和 trimethylation。装饰用的梨树。由分析出版 DNase-Seq 数据,这研究探索了 DNase 过分敏感(DH ) 沿着米饭染色体的地点。histone 标记主要在通用区域出现了并且在基因的抄写开始地点(TSS ) 附近被充实。这分析证明四 histone 修正和 DH 地点都与活跃抄写被联系。而且,四 histone 修正与答应被用来在米饭基因注解预言失踪的基因的特征的抄本 regionsa 是高度并发的。预言被试验性地证实二的抄写预言了失踪的基因进一步验证。而且,顺序主题分析被构造以便识别 DH 地点和许多通常认为的抄写因素绑定地点。Zhou Du Hui Li Qiang Wei Xin Zhao Chunchao Wang Qilin Zhu Xin Yi Wenying Xua X. Shirley Liu Weiwei Jin Zhen Su 2013Molecular Plant2013,6,5:8
2Genomic landscape of gastric cancer: molecular classification and potential targets显示文摘Gastric cancer imposes a considerable health burden worldwide, and its mortality ranks as the second highest for all types of cancers. The limited knowledge of the molecular mechanisms underlying gastric cancer tumorigenesis hinders the development of therapeutic strategies. However, ongoing collaborative sequencing efforts facilitate molecular classification and unveil the genomic landscape of gastric cancer. Several new drivers and tumorigenic pathways in gastric cancer, including chromatin remodeling genes, Rho A-related pathways, TP53 dysregulation, activation of receptor tyrosine kinases, stem cell pathways and abnormal DNA methylation, have been revealed. These newly identified genomic alterations await translation into clinical diagnosis and targeted therapies. Considering that loss-of-function mutations are intractable, synthetic lethality could be employed when discussing feasible therapeutic strategies. Although many challenges remain to be tackled, we are optimistic regarding improvements in the prognosis and treatment of gastric cancer in the near future.Jiawei Guo Weiwei Yu Hui Su Xiufeng Pang 2017Science China(Life Sciences)2017,60,2:6
3Urban energy consumption and related carbon emission estimation: a study at the sector scale显示文摘与快速的经济开发和精力消费生长,中国在世界上成为了最大的精力消费者。由广泛的国际担心推动了,有迫切需要分析精力消费和相关的碳排放的特征与节省精力的目的,减少碳排放,并且减少环境影响。集中于城市的生态系统,最大的精力消费者,为估计精力消费的一个方法和相关的碳排放在这份报纸在城市的部门规模被建立。为 19962010 基于数据,建议方法在案例研究被用于北京分析不同精力资源的消费(即,煤,油,气体,和电)并且在不同扇区的相关的碳排放(即,农业,工业,建设,交通,家庭,和服务性行业)。结果证明煤和油在学习时期期间在不同精力资源之中最作出贡献到精力消费和碳排放,当工业部门消费了大多数精力并且在不同部门之中射出大多数碳时。建议在北京为精力保存和排放减小被提出。在部门规模的精力消费和相关的碳排放的分析对实际精力在城市的生态系统节省和排放减小有用。Weiwei LU Chen CHEN Meirong SU Bin CHEN Yanpeng CAI Tao XING 2013Frontiers of Earth Science2013,7,4:5
4Emission of intermediate volatility organic compounds from a ship main engine burning heavy fuel oil显示文摘Intermediate volatility organic compounds(IVOCs)are crucial precursors of secondary organic aerosol(SOA).In this study,gaseous IVOCs emitted from a ship main engine burning heavy fuel oil(HFO)were investigated on a test bench,which could simulate the real-world operations and emissions of ocean-going ships.The chemical compositions,emission factors(EFs)and volatility distributions of IVOC emissions were investigated.The results showed that the main engine burning HFO emitted a large amount of IVOCs,with average IVOC EFs of 20.2-201 mg/kg-fuel.The IVOCs were mainly comprised of unspeciated compounds.The chemical compositions of exhaust IVOCs were different from that of HFO fuel,especially for polycyclic aromatic compounds and alkylcyclohexanes.The volatility distributions of IVOCs were also different between HFO exhausts and HFO fuel.The distinctions in IVOC emission characteristics between HFO exhausts and HFO fuel should be considered when assessing the IVOC emission and related SOA formation potentials from ocean-going ships burning HFO,especially when using fuel-surrogate models.Haijun Lou Yuejiao Hao Weiwei Zhang Penghao Su Fan Zhang Yingjun Chen Daolun Feng Yifan Li 2019Journal of Environmental Sciences2019,31,10:5
5Optimal Power Allocation with Limited Feedback of Channel State Information in Multi-User MIMO Systems显示文摘In this paper,an expression for the user’s achievable data rate in the multi-user multiple-input multiple-output(MU-MIMO)system with limited feedback(LF)of channel state information(CSI)is derived.The energy efficiency(EE)is optimized through power allocation under quality of service(QoS)constraints.Based on mathematical equivalence and Lagrange multiplier approach,an energy-efficient unequal power allocation(EEUPA)with LF of CSI scheme is proposed.The simulation results show that as the number of transmitting antennas increases,the EE also increases which is promising for the next generation wireless communication networks.Moreover,it can be seen that the QoS requirement has an effect on the EE of the system.Ultimately,the proposed EEUPA with LF of CSI algorithm performs better than the existing energy-efficient equal power allocation(EEEPA)with LF of CSI schemes.Kusi Ankrah Bonsu Weiwei Zhou Su Pan Yan Yan 2020China Communications2020,17,2:5
6Cancer metabolism and tumor microenvironment:fostering each other?显示文摘The changes associated with malignancy are not only in cancer cells but also in environment in which cancer cells live.Metabolic reprogramming supports tumor cells’high demand of biogenesis for their rapid proliferation,and helps tumor cells to survive under certain genetic or environmental stresses.Emerging evidence suggests that metabolic alteration is ultimately and tightly associated with genetic changes,in particular the dysregulation of key oncogenic and tumor suppressive signaling pathways.Cancer cells activate HIF signaling even in the presence of oxygen and in the absence of growth factor stimulation.This cancer metabolic phenotype,described firstly by German physiologist Otto Warburg,ensures enhanced glycolytic metabolism for the biosynthesis of macromolecules.The conception of metabolite signaling,i.e.,metabolites are regulators of cell signaling,provides novel insights into how reactive oxygen species(ROS)and other metabolites deregulation may regulate redox homeostasis,epigenetics,and proliferation of cancer cells.Moreover,the unveiling of noncanonical functions of metabolic enzymes,such as the moonlighting functions of phosphoglycerate kinase 1(PGK1),reassures the importance of metabolism in cancer development.The metabolic,microRNAs,and ncRNAs alterations in cancer cells can be sorted and delivered either to intercellular matrix or to cancer adjacent cells to shape cancer microenvironment via media such as exosome.Among them,cancer microenvironmental cells are immune cells which exert profound effects on cancer cells.Understanding of all these processes is a prerequisite for the development of a more effective strategy to contain cancers.Yiyuan Yuan Huimin Li Wang Pu Leilei Chen Dong Guo Hongfei Jiang Bo He Siyuan Qin Kui Wang Na Li Jingwei Feng Jing Wen Shipeng Cheng Yaguang Zhang Weiwei Yang Dan Ye Zhimin Lu Canhua Huang Jun Mei Hua-Feng Zhang Ping Gao Peng Jiang Shicheng Su Bing Sun Shi-Min Zhao 2022Science China(Life Sciences)2022,65,2:5
7Reductive amination of 1,6-hexanediol with Ru/Al2O3 catalyst in supercritical ammonia显示文摘Hexamethylenediamine(HMDA) is an important reagent for the synthesis of Nylon-6,6, and it is usually produced by the hydrogenation of adiponitrile using a toxic reagent of hydrocyanic acid. Herein, we developed an environmental friendly route to produce HMDA via catalytic reductive amination of 1,6-hexanediol(HDO) in the presence of hydrogen. The activities of several heterogeneous metal catalysts such as supported Ni, Co, Ru, Pt, Pd catalysts were screened for the present reaction in supercritical ammonia without any additives. Among the catalysts examined, Ru/Al_2O_3 presented a high catalytic activity and highest selectivity for the desired product of HMDA. The high performance of Ru/Al_2O_3 was discussed based on the Ru dispersion and the surface properties like the acid-basicity. In addition, the reaction parameters such as reaction temperature,time, H_2 and NH_3 pressure were examined, and the reaction processes were discussed in detail.Yan Li Haiyang Cheng Chao Zhang Bin Zhang Tong Liu Qifan Wu Xinluona Su Weiwei Lin Fengyu Zhao 2017Science China Chemistry2017,60,7:5
8Heterogeneous strain regime in the eastern margin of Tibetan Plateau and its tectonic implications显示文摘The eastern margin of Tibetan Plateau is one of the most active zones of tectonic deformation and seismicity in China. To monitor strain buildup and benefit seismic risk assessment, we constructed 14 survey-mode global position system(GPS) stations throughout the northwest of Longmenshan fault. A new GPS field over 1999–2011 is derived from measurements of the newly built and pre-existing stations in this region. Sequentially,two strain rate fields, one preceding and the other following the 2008 MW7.9 Wenchuan earthquake, are obtained using the Gausian weighting approach. Strain field over1999–2007 shows distinct strain partitioning prior to the2008 MW7.9 Wenchuan earthquake, with compression spreading over around Longmenshan area. Strain field derived from the two measurements in 2009 and 2011 shows that the area around Longmenshan continues to be under striking compression, as the pattern preceding the Wenchuan earthquake, implying a causative factor of the sequent of 2013 MW6.7 Lushan earthquake. Our GPSderived dilatation shows that both the Wenchuan and Lushan earthquakes occurred within the domain of pronounced contraction. The GPS velocities demonstrate that the Longriba fault underwent slight motion with the faultnormal and-parallel rates at 1.0 ± 2.5 mm and 0.3 ± 2.2 mm/a; the Longmenshan fault displayed slow activity, with a fault-normal rate at 0.8 ± 2.5 mm/a, and a fault-parallel rate at 1.8 ± 1.7 mm/a. Longriba fault is on a par with Longmenshan fault in strain partitioning to accommodate the southeastward motion of eastern margin of the Tibetan Plateau. Integrated analysis of principal strain tensors, mean principal stress, and fast directions of mantle anisotropy shows that west of Sichuan is characterized as mechanically strong crust-mantle coupling.Guojie Meng Xiaoning Su Weiwei Wu Jinwei Ren Yonglin Yang Jicang Wu Chieh-Hung Chen Nikolay V.Shestakov 2015Earthquake Science2015,28,1:5
9Preparation of WO3/C Composite and Its Application in Oxidative Desulfurization of Fuel显示文摘The WO_3/C composite was successfully prepared by calcination of a mixture of WO_3 and g-C_3N_4 at 520 ℃. The as-synthesized samples were analyzed by X-ray diffraction(XRD), electronic differential system(EDS), scanning electron microscopy(SEM), infrared spectrometry(IR) and the Brunner-Emmet-Teller(BET) techniques. The WO_3/C composite, in comparison with the WO_3 and C_3N_4, features smaller particle size, bigger surface area and higher desulphurization performance. The influence of the reaction temperature, the catalyst dosage, the reaction time, the oxidant dosage, the sulfide type and the extractant dose on desulfurization reaction was studied. The results showed that the WO_3/C composite revealed a higher desulfurization activity than the WO_3. The desulfurization rate could reach up to 95.8% under optimal conditions covering a catalyst dosage of 0.02 g, a H_2O_2 amount of 0.2 mL, a 1-ethyl-3-methylimidazolium ethyl sulfate(EMIES) amount of 1.0 mL, a reaction temperature of 70 ℃ and a reaction time of 180 min. After five recycles, the desulfurization activity of catalyst did not significantly decline.Zhao Rongxiang Li Xiuping Su Jianxun Shi Weiwei Gao Xiaohan 2017China Petroleum Processing & Petrochemical Technology2017,19,2:4
10Urban Plant Diversity in Relation to Land Use Types in Built-up Areas of Beijing显示文摘Urban plants provide various ecosystem services and biodiversity for human well-being. It is necessary to examine the plant species and functional traits composition and the influencing factors. In this study, a field survey was conducted using the tessellation-randomized plot method to assess the plant species and functional traits variability in greenspaces across eight land use types(LUTs) in the built-up areas of Beijing, China. Results showed that the woody plants in the built-up areas of Beijing comprised 85 non-native species(57%), 21 pollen-allergenic species(14%), and 99 resistant species(67%). Residential areas, community parks and institutional areas had higher woody plant species richness than other LUTs. Native and extralimital native species were more widespread than exotic species. Proportions of species with resistances were low except for cold-and drought-resistance; consequently, a high intensity of management and maintenance is essential for survival of plants in this urban area. Caution should be exerted in selecting plant species with resistance to harsh conditions in different LUTs. Housing prices, distances from the urban center, years since the establishment of LUTs and greening rate were strongly correlated with the plant functional traits and species diversity. Urban forest managers should consider plant functional traits and LUT-specific strategies to maximize both forest and human health.GUO Peipei SU Yuebo WAN Wuxing LIU Weiwei ZHANG Hongxing SUN Xu OUYANG Zhiyun WANG Xiaoke 2018Chinese Geographical Science2018,28,1:4
11The prior rules of designing Ti_(3)C_(2)T_(x) MXene-based gas sensors显示文摘Working temperature,sensitivity,and selectivity are some of the characteristics of the applied gas sensors.How to design and fabricate an ideal gas sensor working at room temperature is still challenging and attracting lots of interest.Two-dimensional(2D)materials with ultra-thin structure have been demonstrated as a family of ideal candidates to achieve this goal.Among them,Ti_(3)C_(2)T_(x) MXene,a kind of layered sheet synthesized by selectively etching MAX phases materials,shows remarkable potential to be the sensitive materials solely or in a composite.However,their designing rules are still lacking critical thinking from the viewpoint of the intrinsic property of Ti_(3)C_(2)T_(x) MXene based materials.In this article,two critical features,i.e.,the thickness of the sensitive materials,and the scope of the analytes,are elaborated towards Ti_(3)C_(2)T_(x) MXene based gas sensors after characterizing the performance of sensing reducing gases(NH3 and CO)and oxidizing gas(NO2).First,the thinner the Ti_(3)C_(2)T_(x) MXene sensitive layer,the better the sensitivity.Second,the Ti_(3)C_(2)T_(x) MXene based gas sensor is not suitable for strong and moderate oxidation gas due to its ease of oxidation.These two rules are demonstrated,and could be considered with priority both in the future researches and practical applications.Yingying Jian Danyao Qu Lihao Guo Yujin Zhu Chen Su Huanran Feng Guangjian Zhang Jia Zhang Weiwei Wu Ming-Shui Yao 2021Frontiers of Chemical Science and Engineering2021,15,3:3
12Bioactivities and molecular mechanisms of polysaccharides from Hericium erinaceus显示文摘Hericium erinaceus,an edible and medicinal mushroom,has been utilized since ancient China due to its delicious taste and health benefits.The polysaccharide from H.erinaceus(HEP)is supposed to be one of the major bioactive compounds,which garnered widespread attention in seeking innovative applications for precision nutrition.Both in vitro and in vivo studies have shown that HEP possesses antioxidant and anti-aging,gastrointestinal protecting,anti-tumor,hypolipidemic and hypoglycemic,immune-enhancing,neuroprotective,and hepatoprotective activities,verifying its functional benefits to human health.This review provides an overview of the extraction and structure of HEP,and concluded that HEP had different structures with different sources of H.erinaceus and extraction methods.Besides,the biochemical and pharmacological properties of HEP as well as the relative mechanism were highlighted and summarized on the basis of in vivo and in vitro studies,which could be helpful for the healthy application of HEP.Finally,the research prospects of HEP for specific populations or precision nutrition were proposed.Jianhui Liu Weiwei Wang Qiuhui Hu Xuyang Wu Hui Xu Anxiang Su Minhao Xie Wenjian Yang 2022Journal of Future Foods2022,2,2:3
13An Organic Solvent-Assisted Intercalation and Collection (OAIC) for Ti_(3)C_(2)T_(x) MXene with Controllable Sizes and Improved Yield显示文摘A good method of synthesizing Ti_(3)C_(2)T_(x)(MXene)is critical for ensuring its success in practical applications,e.g.,electromagnetic interference shielding,electrochemical energy storage,catalysis,sensors,and biomedicine.The main concerns focus on the moderation of the approach,yield,and product quality.Herein,a modified approach,organic solvent-assisted intercalation and collection,was developed to prepare Ti_(3)C_(2)T_(x) flakes.The new approach simultaneously solves all the concerns,featuring a low requirement for facility(centrifugation speed<4000 rpm in whole process),gram-level preparation with remarkable yield(46.3%),a good electrical conductivity(8672 S cm^(−1)),an outstanding capacitive performance(352 F g^(−1)),and easy control over the dimension of Ti_(3)C_(2)T_(x) flakes(0.47–4.60μm^(2)).This approach not only gives a superb example for the synthesis of other MXene materials in laboratory,but sheds new light for the future mass production of Ti_(3)C_(2)T_(x) MXene.Danyao Qu Yingying Jian Lihao Guo Chen Su Ning Tang Xingmao Zhang Wenwen Hu Zheng Wang Zhenhuan Zhao Peng Zhong Peipei Li Tao Du Hossam Haick Weiwei Wu 2021Nano-Micro Letters2021,13,11:2
14Adaptive estimation and nonlinear variable gain compensation of the contouring error for precise parametric curve following显示文摘Contour following is one of the most important issues faced by many computer-numerical-control(CNC) machine tools to achieve high machining precision. This paper presents a new real-time error compensation method aiming at reducing the contouring error caused by facts such as servo lag and dynamics mismatch in parametric curved contour-following tasks. Due to the lack of high-precision contouring-error estimation method for free-form parametric curved toolpath, the error can hardly be compensated effectively. Therefore, an adaptive accurate contouring-error estimation algorithm is proposed first, where a tangential-error backstepping method based on Taylor's expansion is developed to rapidly find the closest point on the parametric curve to the actual motion position. On this foundation, the contouring error is compensated using a proposed nonlinear variable-gain compensation method, where the compensation gain is obtained according to not only the contouring-error magnitude but also its direction variation. The stability of the system after compensation is analyzed afterwards according to the Jury stability criterion.By design of the compensator in accordance with the presented contouring-error compensation method as well as the stability analyzation result, the balance between the response speed and the contour control stability can be effectively made. Experimental tests demonstrate the feasibility of the presented methods in both contouring-error estimation and contour-accuracy improvement.Contributions of this research are significant for enhancing the contour-following performance of the CNC machine tools.JIA ZhenYuan SONG DeNing MA JianWei ZHAO XiaoXuan SU WeiWei 2017Science China(Technological Sciences)2017,60,10:2
15Emissions of intermediate volatility organic compound from waste cooking oil biodiesel and marine gas oil on a ship auxiliary engine显示文摘Ship auxiliary engines contribute large amounts of air pollutants when at berth.Biodiesel,including that from waste cooking oil(WCO),can favor a reduction in the emission of primary pollutant when used with internal combustion engines.This study investigated the emissions of gaseous intermediate-volatile organic compounds(IVOCs)between WCO biodiesel and marine gas oil(MGO)to further understand the differences in secondary organic aerosol(SOA)production of exhausts.Results revealed that WCO exhaust exhibited similar IVOC composition and volatility distribution to MGO exhaust,despite the differences between fuel contents.While WCO biodiesel could reduce IVOC emissions by 50%as compared to MGO,and thus reduced the SOA production from IVOCs.The compositions and volatility distributions of exhaust IVOCs varied to those of their fuels,implying that fuel-component-based SOA predicting model should be used with more cautions when assessing SOA production of WCO and MGO exhausts.WCO biodiesel is a cleaner fuel comparing to conventional MGO on ship auxiliary engines with regard to the reductions in gaseous IVOC emissions and corresponding SOA productions.Although the tests were conducted on test bench,the results could be considered as representative due to the widely applications of the test engine and MGO fuel on real-world ships.Penghao Su Yuejiao Hao Zhe Qian Weiwei Zhang Jing Chen Fan Zhang Fang Yin Daolun Feng Yingjun Chen Yifan Li 2020Journal of Environmental Sciences2020,32,5:2
16Global robust exponential stability analysis for stochastic interval neural networks with time-var- ying delays 显示文摘SU Weiwei CHEN Yiming 2009Communications in Nonlinear Science and Numerical Simulation2009,14,:1
17Long-term outcomes of intensity-modulated radiotherapy for 868 patients with nasopharyngeal carcinoma: An analysis of survival and treatment toxicities显示文摘Xueming Sun Shengfa Su Chunyan Chen Fei Han Chong Zhao Weiwei Xiao Xiaowu Deng Shaomin Huang Chengguang Lin Taixiang Lu 2013Radiotherapy and Oncology2013,,:1
18Global robust exponential stability analysis for stochastic interval neural networks with time-varying delays 显示文摘Su Weiwei Chen Yiming 2009Communications in Nonlinear Science and Numerical Simulation2009,14,5:1
19Highly in-plane anisotropy of thermal transport in suspended ternary chalcogenide Ta_(2)NiS_(5)显示文摘Energy dissipation has always been an attention-getting issue in modern electronics and the emerging low-symmetry two-dimensional(2D)materials are considered to have broad prospects in solving the energy dissipation problem.Herein the thermal transport of a typical 2D ternary chalcogenide Ta_(2)NiS_(5) is investigated.For the first time we have observed strongly anisotropic in-plane thermal conductivity towards armchair and zigzag axes of suspended few-layer Ta_(2)NiS_(5) flakes through Raman thermometry.For 7-nm-thick Ta_(2)NiS_(5) flakes,theκz i g z a g is 4.76 W·m^(−1)·K^(−1) andκa r m c h a i r is 7.79 W·m^(−1)·K^(−1),with a large anisotropic ratio(κa r m c h a i r/κz i g z a g)of 1.64 mainly ascribed to different phonon mean-free-paths along armchair and zigzag axes.Moreover,the thickness dependence of thermal anisotropy is also discussed.As the flake thickness increases,theκa r m c h a i r/κz i g z a g reduces sharply from 1.64 to 1.07.This could be attributed to the diversity in phonon boundary scattering,which decreases faster in zigzag direction than in armchair direction.Such anisotropic property enables heat flow manipulation in Ta_(2)NiS_(5) based devices to improve thermal management and device performance.Our work helps reveal the anisotropy physics of ternary transition metal chalcogenides,along with significant guidance to develop energy-efficient next generation nanodevices.Yue Su Chuyun Deng Jinxin Liu Xiaoming Zheng Yuehua Wei Yangbo Chen Wei Yu Xiao Guo Weiwei Cai Gang Peng Han Huang Xueao Zhang 2022Nano Research2022,15,7:1
20Estrogen induces androgen‐repressed SOX4 expression to promote progression of prostate cancer cells显示文摘Muyi Yang Jing Wang Lin Wang Chengwu Shen Bo Su Mei Qi Jing Hu Wei Gao Weiwei Tan Bo Han 2015Prostate2015,,13:1
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