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101篇 您的检索式:作者名="Zhengwu"
    题名 作者 年代 出处 被引量
1重复经颅磁刺激治疗抑郁症的机制研究进展(英文)显示文摘概述:抑郁障碍是目前最常见的心理健康问题之一。然而,对于该疾病的基于机制的治疗方法仍然是难以捉摸的。重复经颅磁刺激(rTMS)是一种非侵入性的程序,它可以以一种脉冲磁场来刺激大脑中的电活动,被认为是一种有效的抑郁症治疗方式。在这里,我们回顾了关于rTMS治疗抑郁症的临床和基础研究的主要发现,包括它的抗抑郁疗效,基本原理,调节神经回路、神经递质和脑网络、海马神经发生、和突出的功效,以及分子通路。Zhengwu PENG Cuihong ZHOU Shanshan XUE Jie BAI Shoufen YU Xiaosa LI Huaning WANG Qingrong TAN 2018上海精神医学2018,30,2:13
2A New Family of Sauropod Dinosaur from the Upper Cretaceous of Tianzhen, Shanxi Province, China显示文摘A new gigantic sauropod, Huabeisaurus allocates gen. et sp. nov., about 20 m in length and 5 m in height, was discovered in the Upper Cretaceous Huiquanpu Formation, Tianzhen County, Shanxi Province. It is notably different from Diplodocidae, Titanosauridae and Nemegtosauridae in the following aspects: the teeth are strong, peg-like with a length ratio of the tooth crown to tooth root at about 3 to 1; the cervical vertebrae are long with forked spines; the spines in dorsal vertebrae are relatively high, unbifiarcated; the caudal vertebrae are amphicoelous, with anterior neural spines and unbifurcated spines and chevrons; the femur is straight and long, narrow and flat and the tibia and fibula are long and flat. These characters show that the described genus should represent a new family, Huabeisauridae fam. nov. The discovery enriches the sauropod dinosaur record in China, and is quite significant to the study of the taxonomy, evolution, migration, extinction and palaeobiogeographic provincialism ofPANG Qiqing CHENG Zhengwu 2000Acta Geologica Sinica(English Edition)2000,74,2:10
3Preparation of Core-Shell Composite of Y@Mesoporous Alumina and Its Application in Heavy Oil Cracking显示文摘A well core-shell composite of Y@meso-Al with a mesoporous alumina shell and a Y zeolite core was synthesized. The mesoporous alumina shell has a wormhole-like structure with large mesopores. The prepared catalytic cracking catalyst using this composite has exhibited excellent catalytic performance for heavy oil cracking thanks to its favorable physicochemical properties, such as high surface area, large pore volume and outstanding acid sites accessibility for large molecules provided by the composite. In comparison with the reference catalyst using pure Y zeolite, the oil conversion achieved by the above-mentioned catalyst increased by 2.73 percentage points, while the heavy oil yield and coke yield decreased by 2.23 percentage points and 1.28 percentage points, respectively, with the light oil yield increasing by 2.27 percentage points.Yuan Chengyuan Wang Zhengwu Zhang Haitao Tan Zhengguo Pan Zhishuang Gao Xionghou 2016China Petroleum Processing & Petrochemical Technology2016,18,1:10
4Spatial Distribution and Risk Assessment of Heavy Metals in Paddy Soils of Yongshuyu Irrigation Area from Songhua River Basin,Northeast China显示文摘There is an increasing concern for potentially hazardous metals pollution, which can threaten crops production and human health. In this study, the spatial distribution and environmental risks of eight heavy metals in surface soil samples collected from the paddy fields in Yongshuyu irrigation area, Northeast China were investigated. The mean concentrations of Pb, Cr, Cu, Ni, Zn, Cd, Hg and As were 34.6 ± 4.67, 82.8 ± 9.51, 17.3 ± 4.09, 21.2 ± 12.0, 88.6 ± 17.9, 0.18 ± 0.15, 0.22 ± 0.07 and 8.77 ± 2.47 mg/kg, respectively, which were slightly higher than their corresponding background values of Jilin Province, indicating enrichment of these metals in the paddy soils, especially for Ni, Cd and Hg. The spatial distribution of heavy metals was closely correlated with local anthropogenic activities, such as agricultural production, mining and transportation. The hot-spot areas of As and Cd were mainly concentrated in the up-midstream where were associated with agricultural activities. Cr and Cu showed similar spatial distributions with hot-spot areas distributed the whole irrigation area uniformly. Ni was mainly distributed in the downstream where Ni quarries concentrated, while the spatial distribution patterns of Hg was mainly located in the upstream and downstream where the soil was significantly influenced by irrigation and coal mining emission. The spatial distributions of Pb and Zn were mainly concentrated along the highway side. The pollution levels of Yongshuyu irrigation area were estimated through index of geo-accumulation(Igeo), Nemerow integrated pollution index(NIPI) and potential ecological risk index(PERI). The results showed that Cd and Hg were the main pollutants in the study area. Health risk assessment results indicated that children were in higher non-carcinogenic and carcinogenic risks than adults with the carcinogenic metal of As. Ingestion was the main exposure pathway to non-carcinogenic and carcinogenic risk for both adults and children. Principal component analysis(PCA) indicated that Cr and Cu were mainly from parent materials, while Cd and As were mainly affected by agricultural activities. Pb and Zn were controlled by traffic activities, and the accumulations of Ni and Hg were associated with mining activities. This study would be valuable for preventing heavy metals inputs and safety in rice production of the Songhua river basin.CUI Zhengwu WANG Yang ZHAO Na YU Rui XU Guanghui YU Yong 2018Chinese Geographical Science2018,28,5:9
5A New Ceratopsian from the Upper Jurassic Houcheng Formation of Hebei, China显示文摘A new ceratopsian taxon Xuanhuaceratops niei gen. et sp. nov. is erected based on four fragmentary specimens collected from the Late Jurassic Houcheng Formation, Hebei Province, China. Xuanhuaceratops shares a number of derived features with, and is closely related to, another probable Late Juarassic ceratopsian Chaoyangsaurus youngi, from which it differs in only possessing a single premaxillary tooth as well as in details of quadrate and scapular morphology. We hypothesize that these two taxa represent a primitive lineage of Ceratopsia that is basal to the psittacosaurid-neoceratopsian diversity, and propose the name Chaoyangsauridae forZHAO Xijin CHENG Zhengwu XU Xing Peter J. MAKOVICKY 2006Acta Geologica Sinica(English Edition)2006,80,4:8
6Technique for Advanced Electrochemical Oxidation Treatment of Nanofiltration Concentrate of Landfill Leachate显示文摘Landfill leachate treated with combined process of 'pretreatment +biological treatment +advanced treatment(NF)' to produce nanofiltration concentrate, which bio-chemical ratio(B/C) is less than 0.1 and CODcr concentration is 2 000-2 500 mg/L, high salt content. Which cannot be discharged under existing environmental standards. According to analysis based on electrochemical advanced oxidation mechanism, a two-step electrochemical technique was recommended. In the first step, a pulse electrochemical technique was adopted. With Fe as consumption electrode and current density of 10 mA/cm2, the pollutants were removed by means of Fenton reaction, electroflotation and electrocoagulation. In the second step, a double function electrode was used to perform electrocatalytic oxidation by means of titanium metallic oxidates. In the condition that current density being 12.5 mA/cm2, the pollutants were further removed by oxidation and electrolytic deposition. Result shows that the removing rate of CODcr, NH3-N and Cl- were 70%-85%, 90% and 25%, respectively; average value of B/C ratio increased from 0.09 to 0.38 and conductivity reduced by 10%.XIONG Changgui LI Guang ZHANG Zhiliang XIA Zhengwu LI Jian YE Hongji 2014Wuhan University Journal of Natural Sciences2014,19,4:4
7MicroRNA-142-3p is frequently upregulated in colorectal cancer and may be involved in the regulation of cell proliferation显示文摘MicroRNAs are small single-stranded RNA molecules consisting of approximately 22 nucleotides (nt), and have post-transcriptional regulatory functions. By gene chip screening, we previously showed that miR-142-3p was significantly upregulated in colorectal cancer tissue and was associated with clinicopathological features, compared with matched non-tumor tissue. In this study, we confirmed significant upregulation of miR-142-3p in 60 colorectal cancer samples and three colorectal cancer cell lines by quantitative real-time PCR (qRT-PCR). Using software and network resources, we predicted TCF7 as a target of miR-142-3p, which we confirmed with dual-luciferase assays. By RT-PCR and Western blot analysis, we found miR-142-3p negatively regulates TCF7 expression post-transcriptionally. CCK8 assays and growth curves indicated that overexpression of miR-142-3p in SW480 colorectal cancer cells potently inhibited cell proliferation in vitro. The expression of TCF7 mRNA and protein was upregulated in both colorectal cancer tissues and colorectal cancer cell lines, closely correlating with its function as an oncogene in promoting tumor cell proliferation and inhibiting apoptosis. With TCF7 as a direct target, our results suggested that miR-142-3p may be involved in the regulation of cell proliferation in colorectal cancer.ZHOU JiaLiang JIANG Zhi WANG ZhengWu ZOU ShiTao ZHANG YunXia CAI Wei WANG MingZhi XU Min SHI DongTao CHEN WeiChang 2013Chinese Science Bulletin2013,58,23:4
8Stable oxygen-hydrogen isotopes reveal water use strategies of Tamarix taklamakanensis in the Taklimakan Desert, China显示文摘Tamarix taklamakanensis,a dominant species in the Taklimakan Desert of China,plays a crucial role in stabilizing sand dunes and maintaining regional ecosystem stability.This study aimed to determine the water use strategies of T.taklamakanensis in the Taklimakan Desert under a falling groundwater depth.Four typical T.taklamakanensis nabkha habitats(sandy desert of Tazhong site,saline desert-alluvial plain of Qiemo site,desert-oasis ecotone of Qira site and desert-oasis ecotone of Aral site)were selected with different climate,soil,groundwater and plant cover conditions.Stable isotope values of hydrogen and oxygen were measured for plant xylem water,soil water(soil depths within 0–500 cm),snowmelt water and groundwater in the different habitats.Four potential water sources for T.taklamakanensis,defined as shallow,middle and deep soil water,as well as groundwater,were investigated using a Bayesian isotope mixing model.It was found that groundwater in the Taklimakan Desert was not completely recharged by precipitation,but through the river runoff from snowmelt water in the nearby mountain ranges.The surface soil water content was quickly depleted by strong evaporation,groundwater depth was relatively shallow and the height of T.taklamakanensis nabkha was relatively low,thus T.taklamakanensis primarily utilized the middle(23%±1%)and deep(31%±5%)soil water and groundwater(36%±2%)within the sandy desert habitat.T.taklamakanensis mainly used the deep soil water(55%±4%)and a small amount of groundwater(25%±2%)within the saline desert-alluvial plain habitat,where the soil water content was relatively high and the groundwater depth was shallow.In contrast,within the desert-oasis ecotone in the Qira and Aral sites,T.taklamakanensis primarily utilized the deep soil water(35%±1%and 38%±2%,respectively)and may also use groundwater because the height of T.taklamakanensis nabkha was relatively high in these habitats and the soil water content was relatively low,which is associated with the reduced groundwater depth due to excessive water resource exploitation and utilization by surrounding cities.Consequently,T.taklamakanensis showed distinct water use strategies among the different habitats and primarily depended on the relatively stable water sources(deep soil water and groundwater),reflecting its adaptations to the different habitats in the arid desert environment.These findings improve our understanding on determining the water sources and water use strategies of T.taklamakanensis in the Taklimakan Desert.DONG Zhengwu LI Shengyu ZHAO Ying LEI Jiaqiang WANG Yongdong LICongjuan 2020Journal of Arid Land2020,12,1:3
9Object-Based Classification Method for PolSAR Images with Improved Scattering Powers and Contextual Features显示文摘This paper proposes a new object-based classification method for Polarimetric synthetic aperture radar(Pol SAR) images, which considers scattering powers from an improved model-based polarimetric decomposition approach, as well as the spatial and textural features. With the decomposition, the scattering ambiguities between oriented buildings and vegetation are reduced. Furthermore,various contextual features are extracted from the object and incorporated into the K-nearest neighbors(k-NN)based classification. To reduce the feature redundancy, a new Supervised locally linear embedding(S-LLE) dimensionality reduction method is introduced to map the high dimensional polarimetric signatures into the most compact low-dimensional structure for classification. Experimental results with Airborne synthetic aperture rada(AIRSAR)C-band Pol SAR image demonstrate the superior performance to other methods.YUAN Zhengwu CHEN Ran CHEN Cuiping LUO Xiaobo LIU Minghao 2017Chinese Journal of Electronics2017,26,4:2
10Sensitivity of Fusarium graminearum to Carbendazim and Prochloraz显示文摘[Objective]The paper was to understand the resistance of Fusarium graminearum to carbendazim and prochloraz in the main wheat producing areas in Hubei Province.[Method] Totally 350 F. graminearum strains isolated in 2014 were determined to clear their sensitivity to carbendazim and prochloraz. [Result]All isolates were sensitive to carbendazim and prochloraz in Hubei Province,and carbendazim was still valuable in controlling Fusarium head blight. The control effect of prochloraz was better than that of carbendazim,and the combination of prochloraz and carbendazim at the proportion of 1∶ 7 received the best control effect.[Conclusion]Combination of chemical agents will occupy a more and more important position in future prevention and control against Fusarium head blight.Ma Dongfang Huang Shi Zhang Peng Sun Cai Huang Wendi Li Guangjun Zhang Changqing Fang Zhengwu 2017Plant Diseases and Pests2017,8,1:2
11Gastrodin ameliorates depression-like behaviors and up-regulates proliferation of hippocampal-derived neural stem cells in rats: Involvement of its anti-inflammatory action显示文摘Huaning Wang Ruiguo Zhang Yuting Qiao Fen Xue Huang Nie Ying Wang Zhengwu Peng Qingrong Tan 2014Behavioural Brain Research2014,,:2
12Review of recycling waste plastics in asphalt paving materials显示文摘An ever-growing demand for depleted natural resources is one of the significant challenges facing the global asphalt pavement industry in building and maintaining global asphalt pavements.Because plastics are ubiquitous in the global economy,they are the latest in a series of high-profile materials to attract attention.Their low material recovery rates and the environmental impact of current disposal methods pose a threat to plastic recycling.Recycling plastic wastes in asphalt pavement is a possible approach to reducing environmental pressure and the demand for depleted natural resources.Many studies have proposed recycling plastic waste in asphalt pavement using dry-and wet-processed technologies.This review aims to comprehensively evaluate the feasibility of various recycled plastics in asphalt pavement concerning the properties of compatibility,storage stability,microstructure,thermo-rheology,and mechanical performance and to identify hallenges and recommendations for the future.This review discusses recent developments and the feasibility of using plastic wastes as modifiers or additives to asphalt binders or asphalt mixtures in dry and wet processes,focusing on different materials from waste streams,how to produce such modified materials,and the characteristics of plastic waste modified asphalt,thus contributing to the sustainable management of resources and production of useful paving materials.Lingyun You Zhengwu Long Zhanping You Dongdong Ge Xu Yang Fu Xu Mohammad Hashemi Aboelkasim Diab 2022Journal of Traffic and Transportation Engineering(English Edition)2022,9,5:2
13Hybrid photoanode films based on sparse ZnO rod array-TiO_2 nanoparticles in dye-sensitized solar cells显示文摘ZnO-TiO2 hybrid photoanodes were fabricated via the doctor-blade method by integrating vertically-grown sparse ZnO arrays with hydrothermal TiO2 nanoparticles. A special surface-coating technique was developed to deposit a thin TiO2 layer on the surface of ZnO rods. Microstructure, optical and photoelectrochemical performance of the hybrid photoanodes were investigated. The denser ZnO array exhibited bad filling behavior of nanoparticles in the interspace of ZnO rods, strong scattering and low conversion efficiency (0.27%). The sparser array showed a much better integrated microstructure, improved transmittance and high conversion efficiency (2.68%). The surface modification of ZnO rods by the TiO2 thin layer was found useful in improving the interfacial microstructure between the ZnO rod and the TiO2 bulk film, and the total conversion efficiency of 3.01% was achieved, higher than that of the pure TiO2 nanoparticle cell (2.93%). The increased scattering effects on the incident light, the enhanced electron transportation at TiO2/dye/electrolyte interface, and the inhabited recombination were responsible for this improvement.WANG CaiLu GAO XiangDong LI XiaoMin JIANG ZhengWu YANG ZhengHong GU ZhengYing HE Peng 2012Science China(Physics,Mechanics & Astronomy)2012,55,7:2
14Neuroprotective effects of salidroside against beta-amyloid-induced oxidative stress in SH-SY5Y human neuroblastoma cells显示文摘Li Zhang Huixin Yu Xincan Zhao Xiufeng Lin Chen Tan Guoxian Cao Zhengwu Wang 2010Neurochemistry International2010,,5:2
15Investigation of adsorption of surfactant at the air-water interface with quantum chemistry method显示文摘Density functional theory (DFT) of quantum chemistry was used to optimize the configuration of the anionic surfactant complexes CH3(CH2)7OSO?3 (H2O)n (n=0―6) and calculate their molecular frequencies at the B3LYP/6-311+G* level. The interaction of CH3(CH2)7OSO?3 with 1 to 6 water molecules was inves-tigated at the air-water interface with DFT. The results revealed that the hydration shell was formed in the form of H-bond between the hydrophilic group of CH3(CH2)7OSO?3 and 6 waters. The strength of H-bonds belongs to medium. Binding free energy revealed that the hydration shell was stable. The in-crease of the number of water molecules will cause increases of the total charge of hydrophilic group and S10-O9-C8 bond angle,but decreases of the alkyl chain length and the bond lengths of S10-O11,S10-O12 as well as S10-O13,respectively.CHEN MeiLing WANG ZhengWu WANG HaiJun ZHANG GeXin TAO FuMing 2007Chinese Science Bulletin2007,52,11:2
16Memristor-Based Signal Processing for Edge Computing显示文摘The rapid growth of the Internet of Things(IoTs)has resulted in an explosive increase in data,and thus has raised new challenges for data processing units.Edge computing,which settles signal processing and computing tasks at the edge of networks rather than uploading data to the cloud,can reduce the amount of data for transmission and is a promising solution to address the challenges.One of the potential candidates for edge computing is a memristor,an emerging nonvolatile memory device that has the capability of in-memory computing.In this article,from the perspective of edge computing,we review recent progress on memristor-based signal processing methods,especially on the aspects of signal preprocessing and feature extraction.Then,we describe memristor-based signal classification and regression,and end-to-end signal processing.In all these applications,memristors serve as critical accelerators to greatly improve the overall system performance,such as power efficiency and processing speed.Finally,we discuss existing challenges and future outlooks for memristor-based signal processing systems.Han Zhao Zhengwu Liu Jianshi Tang Bin Gao Yufeng Zhang He Qian Huaqiang Wu 2022Tsinghua Science and Technology2022,27,3:2
17Development of a highly sensitive and specific monoclonal antibody-based enzyme-linked immunosorbent assay for determination of doxycycline in chicken muscle, liver and egg显示文摘Tao Le Zhengwu Zhao Wei Wei Dingren Bi 2012Food Chemistry2012,,4:1
18Combinatorial la - ser MBE synthesis of 3d ion doped epitaxial ZnO thin films显示文摘Zhengwu Jin Murakami M Fukumura T 2000Jpn J Cryst Growth2000,214,:1
19Autogenous relative humidity change and autogenous shrinkage of high-performance cement pastes显示文摘JIANG Zhengwu SUN Zhenping WANG Peiming 0,,08:1
20Properties of Self-Compacting Concrete with Machine-Made Sand and High-Volume Mineral Admixtures显示文摘Zhengwu Jiang Shilong Mei 0,,:1
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