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91篇 您的检索式:作者名="Youming Li"
    题名 作者 年代 出处 被引量
1Preparation of hierarchical mesoporous Zn/HZSM-5 catalyst and its application in MTG reaction显示文摘The hierarchical mesoporous Zn/ZSM-5 zeolite catalyst was prepared by NaOH treatment and Zn impregnation, and its application in the conversion of methanol to gasoline (MTG) was studied. N2 adsorption-desorption results showed that the mesopores with sizes of 2–20 nm in HZ5/0.3AT was formed by 0.3 M NaOH alkali treatment. The zeolite samples after modification were also characterized by XRF, AAS, XRD, SEM and NH3-TPD methods. Zn impregnated catalyst Zn/HZ5/0.3AT exhibited dramatic improvements in catalytic lifetime and liquid hydrocarbons yield. The selectivity of aromatic hydrocarbons was also improved after Zn impregnation. It is suggested that the mesopores of Zn/HZ5/0.3AT enhanced the synergetic effect of Zn species and acid sites and the capability to coke tolerance, which were confirmed by the results of catalytic test and TGA analysis, respectively.Youming Ni Aiming Sun XiaolingWu Guoliang Hai Jianglin Hu Tao Li Guangxing Li 2011Journal of Natural Gas Chemistry2011,20,3:31
2Effects of organic acids on the leaching process of ion-adsorption type rare earth ore显示文摘To examine the activation of organic acids on the leaching process of ion-adsorption type rare earth ore(IRE-ore), the leaching behavior of rare earth(RE) and zeta potential of IRE-ore were investigated in the absence and presence of carboxylic acids. The results show that all the tested organic acids(acetic acid,malonic acid, citric acid, tartaric acid, succinic acid, and malic acid) can promote RE extraction. At relatively high concentrations of organic acids, the activation efficiency of organic acids on RE extraction is generally consistent with their complexation ability; whereas at their low concentrations, the change of zeta potential on the IRE-ore surface with organic acid concentration and p H has a close association with RE extraction, which indicates that organic acids can impact the surface electrical property of IREore via their adsorption/desorption, and thereby increase/decrease the affinity of RE ions to IRE-ore.Therefore the influence of organic acids on the IRE-ore surface electrical property also plays an important role in RE extraction in addition to their complexation with RE ions.Li Wang Chunfa Liao Youming Yang Haibo Xu Yanfei Xiao Chunhua Yan 2017Journal of Rare Earths2017,35,12:23
3Zircon U-Pb Ages of the Granodioritic Porphyry in the Laba Molybdenum Deposit,Yunnan,SW China and Its Geological Implication显示文摘Geza 岛弧是一个著名矿化作用集中区域,在西藏的高原的东方边缘的 Sanjiang 领域的部分。在最近的年里,几迟了的 Yanshanian 花岗石的侵入和联系存款在这个区域被发现了,在桃花源,区域是其一最大 Laba 铝存款。以前的研究建议预定 Laba 矿化作用是 85 ±2 妈。然而, granodioritic 斑岩的年龄仍然保持未知。在这研究,从忍受辉钼矿的 granodioritic 斑岩的三件样品锆石标明日期的 LA-ICP-MS U-Pb 与 85.00 ± 的产生日期一起被进行了0.23 妈(MSWD = 0.58 ) , 85.28 ±0.28 妈(MSWD = 1.12 ) ,并且 84.83 ±0.26 妈(MSWD = 0.79 ) 分别地,显示这些 granodioritic 斑岩在 ∼85 附近在迟了的 Yanshanian 形成了妈。与矿化作用的地质的特征结合了,时间地, Laba 存款遗传上空间地与 granodioritic 斑岩被联系。另外, Laba 存款的年龄与另外的迟了的 Yanshanian 侵入和矿化作用一致,建议矿化作用可能在在迟了的白垩纪期间的 intra 板 extensional 环境下面被产生。YU Haijun LI Wenchang YIN Guanghou LU Yingxiang CAO Xiaomin HUANG Dingzhu DONG Tao ZHANG Youming 2014Acta Geologica Sinica(English Edition)2014,88,4:14
4Altered neurogenesis and disrupted expression of synaptic proteins in prefrontal cortex of SHANK3-deficient non-human primate显示文摘Jiezhao Zheng Zhujun Li Rui Tian Youming Lu Xiangyu Guo Yong-hui Jiang Xiao-Jiang Li Yong Q Zhang 2017Cell Research2017,27,10:11
5Is tailored therapy based on antibiotic susceptibility effective?A multicenter,open-label,randomized trial显示文摘An effective eradication therapy of Helicobacter pylori(H.pylori)should be used for the first time.In this study,we assessed whether tailored therapy based on antibiotic susceptibility testing is more effective than traditional therapy.We also evaluated the factors that cause treatment failure in high-resistance areas.For this multicenter trial,we recruited 467 H.pylori-positive patients.The patients were randomly assigned to receive tailored triple therapy(TATT),tailored bismuth-containing quadruple therapy(TABQT),or traditional bismuthcontaining quadruple therapy(TRBQT).For the TATT and TABQT groups,antibiotic selection proceeded via susceptibility testing using an agar-dilution test.The patients in the TRBQT group were given amoxicillin,clarithromycin,esomeprazole,and bismuth.Successful eradication was defined as a negative 13C-urea breath test at least eight weeks after the treatment ended.Susceptibility testing was conducted using an agar-dilution test.The eradication rate was examined via intention-to-treat(ITT)and per-protocol(PP)analyses.The clarithromycin,levofloxacin,and metronidazole resistance rates were 26.12%,28.69%,and 96.79%,respectively.Resistance against amoxicillin and furazolidone was rare.The eradication rates for TATT,TRBQT,and TABQT were 67.32%,63.69%,and 85.99%in the ITT analysis(P<0.001)and 74.64%,68.49%,and 91.22%in the PP analysis(P<0.001),respectively.The efficacy of TABQTwas affected by clarithromycin resistance,and bismuth exerted a direct influence on TATT failure.TABQT was the most efficacious regimen for use in high-resistance regions,especially among clarithromycin-susceptible patients.Jie Pan Zhengchao Shi Dingsai Lin Ningmin Yang Fei Meng Lang Lin Zhencheng Jin Qingjie Zhou Jiansheng Wu Jianzhong Zhang Youming Li 2020Frontiers of Medicine2020,14,1:10
6Isolation,purification and characterization of secondary structure of antifreeze protein from Ammopiptanthus mongo-licus显示文摘Antifreeze protein (AFP) from Ammopiptanthus mongolicus leaves was isolated and purified with DEAE cellulose 52, Sephacryl 300, heat treatment and preparative isotachophoresis. The molecular weight of AFP was 50 ku by SDS-PAGE measurement. The average thermal hysteresis activity (THA) of AFP was 0.35℃ at 5 mg/mL using a differential scanning calorimeter (DSC). This AFP showed heated stability. From circular dichroism (CD) of AFP spectral data from 195-240 nm, a well-defined secondary structure of 11% a-helix, 34% antiparallel β-sheet and 55% random coil for the plant AFP was deduced.FEI Yunbiao WEI Lingbo GAO Suqin LU Manchun WANG Baohuai LI Zhifen ZHANG Youming SHU Nianhong JIANG Yong WANG Weixiang 2001Chinese Science Bulletin2001,46,6:8
7First light of the 1.8-m solar telescope–CLST显示文摘Large-aperture solar telescopes play an important role in solar observations and research,and require high temporal and spatial resolution[1].To solve some fundamental problems such as the solar dynamo,coronal heating,and the triggering of major solar eruptions,the spatial resolution for solar-atmosphere observation should reach at least 0.1 arcsec[2].ChangHui Rao NaiTing Gu XueJun Rao Cheng Li LanQiang Zhang JinLong Huang Lin Kong Ming Zhang YunTao Cheng Yi Pu Hua Bao YouMing Guo YangYi Liu JinSheng Yang LiBo Zhong ChangJun Wang Kai Fang XiaoJun Zhang DongHong Chen Cheng Wang XinLong Fan ZhiWu Yan KeLe Chen XiYa Wei Lei Zhu Hong Liu YongJian Wan Hao Xian WenLi Ma 2020Science China(Physics,Mechanics & Astronomy)2020,63,10:6
8Identification of an endogenous glutamatergic transmitter system controlling excitability and conductivity of atrial cardiomyocytes显示文摘As an excitatory transmitter system,the glutamatergic transmitter system controls excitability and conductivity of neurons.Since both cardiomyocytes and neurons are excitable cells,we hypothesized that cardiomyocytes may also be regulated by a similar system.Duanyang Xie Ke Xiong Xuling Su Guanghua Wang Qiang Ji Qicheng Zou Lingling Wang Yi Liu Dandan Liang Jinfeng Xue Luxin Wang Xueting Gao Xingdong Gu Hongyu Liu r Xiaoyu He Li Li Jian Yang Youming Lu Luying Peng Yi-Han Chen 2021Cell Research2021,31,9:5
9DeST 3.0:A new-generation building performance simulation platform显示文摘Buildings contribute to almost 30%of total energy consumption worldwide.Developing building energy modeling programs is of great significance for lifecycle building performance assessment and optimization.Advances in novel building technologies,the requirements of high-performance computation,and the demands for multi-objective models have brought new challenges for building energy modeling software and platforms.To meet the increasing simulation demands,DeST 3.0,a new-generation building performance simulation platform,was developed and released.The structure of DeST 3.0 incorporates four simulation engines,including building analysis and simulation(BAS)engine,HVAC system engine,combined plant simulation(CPS)engine,and energy system(ES)engine,connected by air loop and water loop balancing iterations.DeST 3.0 offers numerous new simulation features,such as advanced simulation modules for building envelopes,occupant behavior and energy systems,cross-platform and compatible simulation kernel,FMI/FMU-based co-simulation functionalities,and high-performance parallel simulation architecture.DeST 3.0 has been thoroughly evaluated and validated using code verification,inter-program comparison,and case-study calibration.DeST 3.0 has been applied in various aspects throughout the building lifecycle,supporting building design,operation,retrofit analysis,code appliance,technology adaptability evaluation as well as research and education.The new generation building simulation platform DeST 3.0 provides an efficient tool and comprehensive simulation platform for lifecycle building performance analysis and optimization.Da Yan Xin Zhou Jingjing An Xuyuan Kang Fan Bu Youming Chen Yiqun Pan Yan Gao Qunli Zhang Hui Zhou Kuining Qiu Jing Liu Yan Liu Honglian Li Lei Zhang Hong Dong Lixin Sun Song Pan Xiang Zhou Zhe Tian Wenjie Zhang Ruhong Wu Hongsan Sun Yu Huang Xiaohong Su Yongwei Zhang Rui Shen Diankun Chen Guangyuan Wei Yixing Chen Jinqing Peng 2022Building Simulation2022,15,11:5
10Serum proteomic analysis revealed diagnostic value of hemoglobin for nonalcoholic fatty liver disease显示文摘Chaohui Yu Chengfu Xu Lei Xu Jiekai Yu Min Miao Youming Li 2011Journal of Hepatology2011,,1:3
11EAST-Educational Adaptive-optics Solar Telescope显示文摘For the public having a better understanding of solar activities,the Educational Adaptive-optics Solar Telescope(EAST)was built in July 2021 and is located at the Shanghai Astronomy Museum.The EAST consists of a 65 cm aperture solar telescope with a 177-element adaptive optics system and two-channel high resolution imaging system at the Hαand TiO bands,in addition to three full disk solar telescopes at CaK,Hαand TiO bands equipped on the tube of the main telescope.In this paper,the configuration of the EAST is described.Its performance and on-sky observational results are presented.The EAST,to our knowledge,is the most advanced solar telescope for the popularization of science in the world.Due to its excellent performance,the data acquired by the EAST can also be used for research on solar physics and space weather prediction.Changhui Rao Xuejun Rao Zhimao Du Hua Bao Cheng Li Jinlong Huang Youming Guo Libo Zhong Qing Lin Xin Ge Jinsheng Yang Xinlong Fan Yangyi Liu Dan Jia Xin Li Mei Li Ming Zhang Yuntao Cheng Jiahui Zhou Jiawen Yao Lanqiang Zhang Naiting Gu 2022Research in Astronomy and Astrophysics2022,22,6:3
12A Turn-On Fluorescence Chemosensor for Cyanide in Aqueous Media Based on a Nucleophilic Addition Reaction显示文摘Jie Chen Wenting Li Qiao Li Qi Lin Hong Yao Youming Zhang Taibao Wei 2017Chinese Journal of Chemistry2017,35,7:2
13VGLUT3 neurons in median raphe control the efficacy of spatial memory retrieval via ETV4 regulation of VGLUT3 transcription显示文摘The raphe nucleus is critical for feeding, rewarding and memory. However, how the heterogenous raphe neurons are molecularly and structurally organized to engage their divergent functions remains unknown. Here, we genetically target a subset of neurons expressing VGLUT3. VGLUT3 neurons control the efficacy of spatial memory retrieval by synapsing directly with parvalbumin-expressing GABA interneurons(PGIs) in the dentate gyrus. In a mouse model of Alzheimer's disease(AD mice),VGLUT3→PGIs synaptic transmission is impaired by ETV4 inhibition of VGLUT3 transcription. ETV4 binds to a promoter region of VGLUT3 and activates VGLUT3 transcription in VGLUT3 neurons. Strengthening VGLUT3→PGIs synaptic transmission by ETV4 activation of VGLUT3 transcription upscales the efficacy of spatial memory retrieval in AD mice. This study reports a novel circuit and molecular mechanism underlying the efficacy of spatial memory retrieval via ETV4 inhibition of VGLUT3 transcription and hence provides a promising target for therapeutic intervention of the disease progression.Aodi He Chen Zhang Xiao Ke Yao Yi Quntao Yu Tongmei Zhang Hongyan Yu Huiyun Du Hao Li Qing Tian Ling-Qiang Zhu Youming Lu 2022Science China(Life Sciences)2022,65,8:2
14In-Situ Chemosynthesis of ZnO Nanoparticles to Endow Wood with Antibacterial and UV-Resistance Properties显示文摘Hybrid wood materials have attracted considerable attention because they have combined advantages of both wood and inorganic compounds. This work investigated the microstructural morphology, thermal stability, ultraviolet(UV) stability, and antibacterial property of composites made from wood/ZnO hybrid materials through a facile in-situ chemosynthesis methods. The X-ray diffraction(XRD) and thermogravimetric analysis(TGA) results indicated that the synthesized ZnO particles had an average grain size of about 10.8 nm. The scanning electron microscopy(SEM) observations showed that ZnO nanoflowers self-assembled with nanosheets were presented in wood cell lumens and increased with increasing Zn^(2+)concentrations. ZnO nanoparticles were also generated in the wood cell wall, which was confirmed by the results of energy-dispersive spectroscopy(EDS). The TGA tests also indicated that the thermal stability of wood/ZnO hybrid materials was improved after the formation of ZnO inorganic particles. Finally, the results of antibacterial efficacy tests and UV resistance tests revealed that ZnO nanoparticles showed a promising future as antimicrobial agents against Escherichia coli(E.coli) and UV resistance agents for wood protection.Youming Dong Yutao Yan Huandi Ma Shifeng Zhang Jianzhang Li Changlei Xia Sheldon Q.Shi Liping Cai 2017Journal of Materials Science & Technology2017,33,3:2
15Biochemical characterization of a polyethylene terephthalate hydrolase and design of high-throughput screening for its directed evolution显示文摘Polyethylene terephthalate(PET),one of the most widely used plastics in the world,causes serious environmental pollution.Recently,researchers have focused their efforts on enzymatic degradation of PET,which is an attractive way of degrading and recycling PET.In this work,PET hydrolase Sb PETase from Schlegelella brevitalea sp.nov.was biochemically characterized,and rational design was performed based on its sequence similarity with the previ-ously reported Is PETase from Ideonella sakaiensis,resulting in a triple mutant with increased activity.Furthermore,using a sec-dependent signal peptide PeIB and colicin release protein Kil,we set up a high-efficiency secretion system of PETase in Escherichia coli BL21(DE3),enabling higher PETase secretion.Utilizing this secretion system,we established a high-throughput screening method named SecHTS(sec retion-based h igh-throughput s creening)and performed directed evolution of Is PETase and Sb PETase through DNA shuffling.Finally,we generated a mutant Is PETase S139T with increased activity from the mutant library.Xiaotong Wang Chaoyi Song Qingsheng Qi Youming Zhang Ruijuan Li Liujie Huo 2022Engineering Microbiology2022,2,2:2
16Sensitive and Selective Fluorescent and Colorimetric Sensor for Ag^+ Based on the Supramolecular Self-Assembly in Semi-Water显示文摘在用超级快方法的半水的离子的 ultratrace 层次的特定的识别仍然是为环境监视的挑战。此处,我们报导一荧光灯并且 colormetric 传感器(ZH ) 基于超分子自己组装,其结构被银离子的 ultratrace 的增加破坏。这个过程支持了可见颜色改变的肉眼或与一个宽 pH 范围一起熄灭的荧光紧张。系统的研究揭示了很高的选择(0.Taibao Wei Haili Zhang Wenting Li Wenjuan Qu Junxia Su Qi Lin Youming Zhang Hong Yao 2017Chinese Journal of Chemistry2017,35,8:1
17Polar codes: Encoding/decoding and rate-compatible jointly design for HARQ system显示文摘Polar coding are the first class of provable capacity-achieving coding techniques for a wide range of channels.With an ideal recursive structure and many elegant mathematical properties,polar codes are inherently implemented with low complexity encoding and decoding algorithms.Since the block length of the original polar construction is limited to powers of two,rate-compatible polar codes(RCPC)are presented to meet the flexible length/rate transmission requirements in practice.The RCPC codes are well-conditioned to combine with the hybrid automatic repeat request(HARQ)system,providing high throughput efficiency and such RCPC-HAPQ scheme is commonly used in delay-insensitive communication system.This paper first gives a survey of both the classical and state-of-the-art encoding/decoding algorithms for polar codes.Then the RCPC construction methods are discussed,including the puncturing,shortening,multi-kernel construction,etc.Finally,we investigate several RCPC-HARQ jointly design systems and discuss their encoding gain and re-transmission diversity gain.Qiaoli Zeng Quan Zhou Xiangkun He Youming Sun Xiangcheng Li Haiqiang Chen 2021Intelligent and Converged Networks2021,2,4:1
18Mechanism of meehanieal property enhancement in nitrogen and titanium implanted 321 stainless steel 显示文摘Xu Ming Li Liuhe Liu Youming 2006Materials Science and Engineering A2006,425,:1
19A cyclic correla- tion-based blind SINR estimation for OFDM systems 显示文摘HONG Shunli LI Youming HE Yu-Cheng 2012IEEECommunications Letters2012,16,11:1
20Common offset Continuation in lateral linear varied velocity media显示文摘Liu Hong Luo Mingqiu Li Youming 2000Chinese Journal of Geophysics2000,43,1:1
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