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304篇 您的检索式:作者名="ZHU Jianguo"
    题名 作者 年代 出处 被引量
1Soil salinization research in China: Advances and prospects显示文摘与气候变化的进展引起的环境恶化,土壤 salinization 是一个严重、成长的全球问题。当前,大约 7% 世界陆地表面被 salinization 威胁。中国是其土壤被这个问题严重地影响的一个国家,它由于它的广泛的区域,并且宽分发形成严肃的威胁到地区性的农业开发。在这评论,我们在过去的 70 年在中国为土壤 salinization 研究总结框架,估计存在的软弱在两个研究国内、国际的上下文,加亮趋势并且给关于在过去的 30 年的盐的土壤的全球研究的调查结果调音,并且为关于盐的土壤的未来研究建议六个主要领域和方向。LI Jianguo PU Lijie HAN Mingfang ZHU Ming ZHANG Runsen XIANG Yangzhou 2014Journal of Geographical Sciences2014,24,5:90
2Why Lake Taihu continues to be plagued with cyanobacterial blooms through 10 years(2007–2017) efforts显示文摘With the expansion of urban, industry, and agriculture after World War II, eutrophication firstly emerged as a major water quality threat in small water bodies [1]. As the increasing magnitudes and scales of nutrient pollution and habitat alteration, many of the world's large lakes exhibit symptoms of eutrophication, e.g., toxic cyanobacterial blooms, deoxygenation, and habitat loss.Boqiang Qin Hans W.Paerl Justin D.Brookes Jianguo Liu Erik Jeppesen Guangwei Zhu Yunlin Zhang Hai Xu Kun Shi Jianming Deng 2019Science Bulletin2019,64,6:50
3An alternative therapy for drug-resistant epilepsy: transcutaneous auricular vagus nerve stimulation显示文摘Rong Peijing Liu Aihua Zhang Jianguo Wang Yuping Yang Anchao Li Liang Ben Hui Li Liping Liu Rupeng He Wei Liu Huanguang Huang Feng Li Xia Wu Peng Zhu Bing 2014Chinese Medical Journal2014,,2:20
4Experimental Study on Preheated Combustion of Pulverized Semi-coke显示文摘In a test rig,pulverized semi-coke was preheated to 850℃in a circulating fluidized bed(CFB)and then cornbusted at 1100℃in a down-fired combustor(DFC).Experiments were conducted to reveal the effects of three secondary air nozzle cases(co-axial jet,top circular jet and wall circular jet)on the NO emission.The results show that the optimized secondary air nozzle can reduce NO emission.O_2 concentration profile is the major factor affecting NO generation and emission,which is led by the secondary air nozzle.The lower O_2 concentration led to the generation of lower initial NO.The NO emission at the exit of the DFC was reduced from 189 to 92mg/m^3(@6%O_2)with the decrease of initial generation.The peak of NO at 100 mm below the nozzle should be attributed to the oxidization of NH_3 in the syngas,rather than the oxidization of fuel-N in the char.The low and well-distributed O_2 concentration contributes to the reduction of initial NO,which helps to reduce the NO emission.The combustion effieiencies of the eases of the co-axial jet,the top circular jet,and the wall circular jet are97.88%,98.94%and 98.74%,respectively.YAO Yao ZHU Jianguo LU Qinggang ZHOU Zuxu 2015Journal of Thermal Science2015,24,4:19
5双馈异步风力发电机无差拍直接功率控制及延时补偿显示文摘针对双馈异步风力发电机(DFIG),传统基于开关表的直接功率控制策略(LUT-DPC)存在功率波动较大、开关频率不固定、电流谐波丰富等问题。本文提出一种结构和原理简单的无差拍直接功率控制策略(DB-DPC),将无差拍控制原理与空间矢量脉宽调制(SVM)技术及DPC策略相结合,无需旋转坐标变换,在消除瞬时有功及无功功率静差、减少谐波含量的同时获得了固定的开关频率。采用了'两步预测'方式对实际系统中的采样周期延时进行补偿,进一步提高了系统控制精度及动态响应速度。仿真和实验结果验证了该DB-DPC策略及延时补偿方案在DFIG中应用的正确性和可行性。孙丹 方扬 孙士涛 Zhu Jianguo 2013电工技术学报2013,28,11:14
6De novo mutation in ATP6V1B2 impairs lysosome acidification and causes dominant deafness-onychodystrophy syndrome显示文摘Yongyi Yuan Jianguo Zhang Qing Chang Jin Zeng Feng Xin Jianjun Wang Qingyan Zhu Jing Wu Jingqiao Lu Weiwei Guo Xukun Yan Hui Jiang Binfei Zhou Qi Li Xue Gao Huijun Yuan Shiming Yang Dongyi Han Zixu Mao Ping Chen Xi Lin Pu Dai 2014Cell Research2014,24,11:13
7Structure Styles of Mesozoic-Cenozoic U-bearing Rock Series in Northern China显示文摘In Northern China,sandstone-type uranium(U) deposits are mostly developed in MesozoicCenozoic basins. These U deposits are usually hosted in unvarying horizons within the basins and exhibit typical U-forming sedimentary associations,which is referred to as U-bearing rock series. This study describes the structural features of U-bearing rock series within the main Mesozoic-Cenozoic Uproducing continental basins in Kazakhstan,Uzbekistan,and Russia in the western segment of the Central Asian Metallogenic Belt(CAMB),and Northern China in the eastern segment of the CAMB. We analyze the basic structural conditions and sedimentary environments of U-bearing rock series in Northern China and classify their structural styles in typical basins into river valley,basin margin,and intrabasin uplift margin types. The intrabasin uplift margin structural style proposed in this study can be used to indicate directions for the exploration of sandstone-type U deposits hosted in the center of a basin. At the same time,the study of structural style provides a new idea for exploring sandstone-type U deposits in Mesozoic-Cenozoic basins and it is of great significance to prospecting of sandstone-type uranium deposits.JIN Ruoshi MIAO Peisen SIMA Xianzhang LI Jianguo ZHAO Hualei ZHAO Fengqing FEN Xiaoxi CHEN Yin CHEN Lulu ZHAO Lijun ZHU Qiang 2016Acta Geologica Sinica(English Edition)2016,90,6:12
8Haze insights and mitigation in China: An overview显示文摘The present article provides an overview of the chemical and physical features of haze in China, focusing on the relationship between haze and atmospheric fine particles, and the formation mechanism of haze. It also summarizes several of control technologies and strategies to mitigate the occurrence of haze. The development of instruments and the analysis of measurements of ambient particles and precursor concentrations have provided important information about haze formation. Indeed, the use of new instruments has greatly facilitated current haze research in China. Examples of insightful results include the relationship between fine particles and haze, the chemical compositions and sources of particles, the impacts of the aging process on haze formation, and the application of technologies that control the formation of haze. Based on these results, two relevant issues need to be addressed: understanding the relationship between haze and fine particles and understanding how to control PM2.5.Xuliang Zhuang Yuesi Wang Hong He Jianguo Liu Xinming Wang Tingyu Zhu Maofa Ge Ju Zhou Guiqian Tang Jinzhu Ma 2014Journal of Environmental Sciences2014,26,1:12
9Simulation of residual stresses and their effects on thermal barrier coating systems using finite element method显示文摘Thermal barrier coating(TBC)systems are widely used in industrial gas-turbine engines.However,premature failures have impaired the use of TBCs and cut down their lifetime,which requires a better understanding of their failure mechanisms.In the present study,experimental studies of isothermal cycling are firstly carried out with the observation and estimation of microstructures.According to the experimental results,a finite element model is established for the analysis of stress perpendicular to the TBC/BC interface.Detailed residual stress distributions in TBC are obtained to reflect the influence of mechanical properties,oxidation,and interfacial roughness.The calculated results show that the maximum tensile stress concentration appears at the peak of TBC and continues to increase with thermal cycles.Because of the microstructural characteristics of plasma-sprayed TBCs,cracks initialize in tensile stress concentration(TSC)regions at the peaks of TBC and propagate along the TBC/BC interface resulting in the spallation of TBC.Also,the inclusion of creep is crucial to failure prediction and is more important than the inclusion of sintering in the simulation.ZHU JianGuo CHEN Wei XIE HuiMin 2015Science China(Physics,Mechanics & Astronomy)2015,58,3:11
10Accurate Torque Modeling With PSO-Based Recursive Robust LSSVR for a Segmented-Rotor Switched Reluctance Motor显示文摘In order to improve the reliability in torque calculation of SRM,an accurate nonlinear torque model regresses by recursive robust least squares support vector regression(RR-LSSVR)is proposed in this paper.The model is in terms of a segmented-rotor switched reluctance motor(SSRM).The characteristics of the SSRM is introduced to show its nonlinear characteristics both in magnetic and torque.Then,its mathematic model is established,and an accurate inductance measurement method and a torque calculation method are presented.After this,the principle of the RR-LSSVR and why it can adjust weights according to errors are described.The model used the RR-LSSVR algorithm shows an outstanding capability in accuracy and quickness compared with other algorithms.Finally,to further validate the accuracy of the proposed model in practical application,simulation and experiment are designed based on a 16/10 SSRM.Jiangling Wu Xiaodong Sun Jianguo Zhu 2020CES Transactions on Electrical Machines and Systems2020,4,2:11
11FAM83D inhibits autophagy and promotes proliferation and invasion of ovarian cancer cells via PI3K/AKT/mTOR pathway显示文摘Ovarian cancer is one of the most lethal malignant tumors in women.The family with sequence similarity 83,member D(FAM83D)plays an important role in several cancers,but its function and underlying mechanism in ovarian cancer remain unknown.To investigate the role of FAM83D in ovarian cancer,the expression of FAM83D was determined by immunohistochemistry in tissue microarray slide.Cellular proliferation and invasion were detected by 5-Ethynyl-2′-deoxyuridine assays and transwell invasion assays.The correlations between FAM83D and autophagy were detected by western blot analysis and confocal microscopy.Western blot analysis was used to identify the protein expression of FAM83D,phosphoinositide 3-kinase(PI3K),protein kinase B(AKT),mammalian target of rapamycin(mTOR)and Sequestosome 1(P62).Tumorigenesis in nude mice was used to explore the function of FAM83D in vivo.We found high expression level of FAM83D in ovarian cancer tissues as compared to the normal ovarian tissues.Knockdown of FAM83D in SKOV3 cells enhanced autophagy and inhibited the proliferation and invasion in vitro,whereas ectopic expression of FAM83D in A2780 cells exerted an opposite effect.Mechanistically,overexpression of FAM83D activated the PI3K/AKT/mTOR pathway,and Torin1 could suppress FAM83D-induced cell proliferation and invasion.In vivo,overexpression FAM83D promoted tumor growth.Overall,FAM83D promoted ovarian cancer cell invasion and proliferation,while inhibited autophagy via the PI3K/AKT/mTOR signaling pathway.Our results suggest that FAM83D may be a candidate oncogene in ovarian cancer,which provides a fresh perspective of FAM83D in ovarian cancer.Hongtao Zhu Shuai Diao Vincent Lim Lina Hu Jianguo Hu 2019Acta Biochimica et Biophysica Sinica2019,51,5:11
12Satellite UV-Vis spectroscopy:implications for air quality trends and their driving forces in China during 2005-2017显示文摘Abundances of a range of air pollutants can be inferred from satellite UV-Vis spectroscopy measurements by using the unique absorption signatures of gas species.Here,we implemented several spectral fitting methods to retrieve tropospheric NO_(2),SO_(2),and HCHO from the ozone monitoring instrument(OMI),with radiative simulations providing necessary information on the interactions of scattered solar light within the atmosphere.We analyzed the spatial distribution and temporal trends of satellite-observed air pollutants over eastern China during 2005-2017,especially in heavily polluted regions.We found significant decreasing trends in NO_(2) and SO_(2) since 2011 over most regions,despite varying temporal features and turning points.In contrast,an overall increasing trend was identified for tropospheric HCHO over these regions in recent years.Furthermore,generalized additive models were implemented to understand the driving forces of air quality trends in China and assess the effectiveness of emission controls.Our results indicated that although meteorological parameters,such as wind,water vapor,solar radiation and temperature,mainly dominated the day-to-day and seasonal fluctuations in air pollutants,anthropogenic emissions played a unique role in the long-term variation in the ambient concentrations of NO_(2),SO_(2),and HCHO in the past 13 years.Generally,recent declines in NO_(2) and SO_(2) could be attributed to emission reductions due to effective air quality policies,and the opposite trends in HCHO may urge the need to control anthropogenic volatile organic compound(VOC)emissions.Chengxin Zhang Cheng Liu Qihou Hu Zhaonan Cai Wenjing Su Congzi Xia Yizhi Zhu Siwen Wang Jianguo Liu 2019Light(Science & Applications)2019,8,1:11
13Responses of rice growth to copper stress under free-air CO_2 enrichment (FACE)显示文摘The responses of rice to the second degree contamination of copper were studied by pot experiments under free-air CO2 enrichment (FACE) with 570 μmol·mol-1 of CO2. The results showed that the content of copper in rice leaves was reduced with the CO2 concentration reaching 570 μmol·mol-1 and this happened more significantly under the second degree contamination of copper. Under FACE, activities of superoxide dismutase (SOD) enzyme in rice leaves treated by copper contamination were induced, whereas the contents of glutathione (GSH) and glutathione disulfide (GSSG) had no significant difference from the control. In the presence of ambient CO2, activities of SOD enzyme treated by copper pollution were suppressed during the whole rice growth, however, the contents of GSH and GSSG were induced at tillering and jointing stages, and then restored to the control levels in later growth under the second degree contamination of copper. With the rice growing, the content of malondialdehyde (MDA) rises continuously, but there had been no significant difference between the treatments at the same growth stage. Further studies are needed on the response mechanism of rice to Cu stress under elevated CO2.JIA HaiXia GUO HongYan YIN Ying WANG Qiang SUN Qin WANG XiaoRong ZHU JianGuo 2007Chinese Science Bulletin2007,52,19:10
14Technological development and engineering applications of novel steel-concrete composite structures显示文摘In view of China's development trend of green building and building industrialization,based on the emerging requirements of the structural engineering community,the development and proposition of novel resourcesaving high-performance steel-concrete composite structural systems with adequate safety and durability has become a kernel development trend in structural engineering.This paper provides a state of the art review of China's cutting-edge research and technologies in steel-concrete composite structures in recent years,including the building engineering,the bridge engineering and the special engineering.This paper summarizes the technical principles and applications of the long-span bi-directional composite structures,the long-span composite transfer structures,the comprehensive crack control technique based on uplift-restricted and slip-permitted (URSP)connectors,the steel plate concrete composite (SPCC)strengthen technique,and the innovative composite joints.By improving and revising traditional structure types, the comprehensive superiority of steel-concrete composite structures is well elicited.The research results also indicate that the high-performance steel-concrete composite structures have a promising popularizing prospect in the future.Jianguo NIE Jiaji WANG Shuangke GOU Yaoyu ZHU Jiansheng FAN 2019Frontiers of Structural and Civil Engineering2019,13,1:9
15DNA damage triggers tubular endoplasmic reticulum extension to promote apoptosis by facilitating ER-mitochondria signaling显示文摘endoplasmic 蜂窝胃(嗯) 由原子信封, perinuclear 表和一个外部管状的网络组成。外设嗯并且线粒体形式在特定的子域的紧密的接触,它协调二个细胞器的函数并且为象 Ca 2+ 转移和 apoptosis 那样的多重细胞的进程被要求。然而,它大部分是未知的怎么嗯形态学并且嗯线粒体发信号动态地在象 DNA 那样的不同生理或病理学的条件下面被调整损坏。这里,我们证明外设,管状嗯响应 DNA 经历重要扩展损坏,和那这个过程依赖于嗯塑造蛋白质 REEP1, REEP2 和 EI24 (别名 PIG8 ) 的调停 p53 的 transcriptional 激活。这通过 EI24 和 mitochondrial 支持嗯线粒体接触的形成外部膜蛋白质 VDAC2,便于 Ca 2+ 转移从嗯到线粒体并且支持 DNA 导致损坏的 apoptosis。因此,我们识别包含改变在的一条唯一的 DNA 损坏反应小径嗯形态学,发信号的嗯线粒体,和 apoptosis。Pengli Zheng Qingzhou Chen Xiaoyu Tian Nannan Qian Peiyuan Chai Bing Liu Junjie Hu Craig Blackstone Desheng Zhu Junlin Teng Jianguo Chen 2018Cell Research2018,28,8:9
16Positive and negative shear lag behaviors of composite twin-girder decks with varying cross-section显示文摘In steel-concrete composite twin-girder decks, wide concrete slab would undergo significant shear lag warping effect, including positive and negative. Some researchers have investigated the positive shear lag of composite decks by means of one-dimensional line model, while the studies on the negative shear lag have not yet been reported until now. In this study, a new one-dimensional analytical model of composite twin-girder decks is first proposed based on the model proposed by Dezi et al. Besides slab shear lag effect and partial connection at slab-girder interface which have been included in the model of Dezi et al., the particularity of the proposed model relies on its ability to account for variation characteristic of cross-section. Verification of the analytical model is later conducted through comparison of results from the analytical analysis and elaborate FE analysis for a simply supported composite deck with increasing depth and a two-span continuous one with decreasing depth. Finally, three kinds of structural forms of composite twin-girder decks, including cantilever, simply supported and continuous decks, are selected to carry out the analysis of positive and negative shear lag behaviors by means of the analytical model. The influences of cross-sectional variation characteristic and load type on positive and negative shear lag behaviors are mainly investigated. Additionally, a new definition on effective width for considering simultaneously positive and negative shear lag behaviors is proposed. The results from the proposed analytical model and EC4 specification are compared to provide suggestions for designers and checkers. In this study, the proposed analytical model can provide a powerful numerical tool for researchers to conduct the further investigation, and the analysis on shear lag and effective width can assist in design analysis of composite twin-girder decks.ZHU Li NIE JianGuo JI WenYu 2017Science China(Technological Sciences)2017,60,1:9
17Photonic integrated technology for multi-wavelength laser emission显示文摘We summarized the design, fabrication challenges and important technologies for multi-wavelength laser transmitting photonic integration. Technologies discussed include multi-wavelength laser arrays, monolithic integration and modularizing coupling and packaging. Fabrication technique requirements have significantly declined with the rise of reconstruction-equivalent-chirp and second nanoimprint mask technologies. The monolithic integration problem between active and passive waveguides can be overcome with Butt-joint and InP array waveguide grating technologies. The dynamic characteristics of multi-factors will be simultaneously measured with multi-port analyzing modules. The performance of photonic integration chips is significantly improved with the autoecious factors compensation packaging technique.CHEN XiangFei LIU Wen AN JunMing LIU Yu XU Kun WANG Xin LIU JianGuo JI YueFeng ZHU NingHua 2011Chinese Science Bulletin2011,56,28:9
18双馈异步风力发电机优化预测直接功率控制显示文摘提出了一种双馈异步风力发电机(DFIG)的优化预测直接功率控制(P-DPC)策略。讨论了P-DPC的基本原理,分析了常规P-DPC策略中的电压矢量选择原则,其中电压矢量作用时间可能出现负值,并产生较多低次电流谐波,对此研究了优化的电压矢量选择和作用时间处理方法。对优化P-DPC、常规P-DPC、传统基于查询开关表的DPC及矢量控制策略进行了仿真与实验的对比研究,结果证明,优化P-DPC在无需旋转坐标变换和空间矢量脉宽调制情况下实现了固定开关频率,具有良好的稳态性能,同时也继承了传统DPC的优异动态性能,表明了本文所提优化P-DPC方法在DFIG风电系统中应用的可行性和有效性。孙丹 邓伦杰 孙士涛 Zhu Jianguo 2013电工技术学报2013,28,11:7
19Paddy System with a Hybrid Rice Enhances Cyanobacteria Nostoc and Increases N2 Fixation显示文摘Biological nitrogen (N) fixation (BNF) plays a significant role in maintaining soil fertility in paddy field ecosystems. Rice variety influences BNF, but how different rice varieties regulate BNF and associated diazotroph communities has not been quantified. Airtight, field-based 15N2-labelling grow th chamber experiments were used to assess the BNF capac 辻 y of different rice varie ties. In addition, both the 16S rRNA and nifH genes were sequenced to assess the influence of different rice varieties on bacterial and diazotrophic communities in paddy soils. After subjecting a rice-soil system to 74 d of continuous airtight, field-based 15N2 labelling in pots in a growth chamber, the amounts of fixed N were 22.3 and 38.9 kg ha^-1 in inbred japonica (W23) and hybrid indica (IIY) rice cultivars plan ted in the rice-soil systems, respectively, and only 1%—2.5% of the fixed N was allocated to the rice plants and weeds. A greater abundance of diazotrophs was found in the surface soil (0-1 cm) under IIY than under W23. Sequencing of the 16S rRNA gene showed significantly greater abundances of the cyanobacterial genera Nostoc, Anabaena, and Cylindrospermum under IIY than under W23. Sequencing of the nifH gene also showed a significantly greater abundance of Nostoc under IIY than under W23. These results indicate that the hybrid rice cultivar (IIY) promoted BNF to a greater extent than the inbred rice cultivar (W23) and that the increase in BNF might have been due to the enhanced heterocystous cyanobacteria Nostoc.MA Jing BEI Qicheng WANG Xiaojie LIU Gang Georg CADISCH LIN Xingwu ZHU Jianguo SUN Xiaoli XIE Zubin 2019Pedosphere2019,29,3:7
20Chondrogenesis mediates progression of ankylosing spondylitis through heterotopic ossification显示文摘Ankylosing spondylitis(AS)is chronic inflammatory arthritis with a progressive fusion of axial joints.Anti-inflammatory treatments such as anti-TNF-αantibody therapy suppress inflammation but do not effectively halt the progression of spine fusion in AS patients.Here we report that the autoimmune inflammation of AS generates a microenvironment that promotes chondrogenesis in spine ligaments as the process of spine fusion.Chondrocyte differentiation was observed in the ligaments of patients with earlystage AS,and cartilage formation was followed by calcification.Moreover,a large number of giant osteoclasts were found in the inflammatory environment of ligaments and on bony surfaces of calcified cartilage.Resorption activity by these giant osteoclasts generated marrow with high levels of active TGF-β,which induced new bone formation in the ligaments.Notably,no Osterix+osteoprogenitors were found in osteoclast resorption areas,indicating uncoupled bone resorption and formation.Even at the late and maturation stages,the uncoupled osteoclast resorption in bony interspinous ligament activates TGF-βto induce the progression of ossification in AS patients.Osteoclast resorption of calcified cartilage-initiated ossification in the progression of AS is a similar pathologic process of acquired heterotopic ossification(HO).Our finding of cartilage formation in the ligaments of AS patients revealed that the pathogenesis of spinal fusion is a process of HO and explained why anti-inflammatory treatments do not slow ankylosing once there is new bone formation in spinal soft tissues.Thus,inhibition of HO formation,such as osteoclast activity,cartilage formation,or TGF-βactivity could be a potential therapy for AS.Tao Yu Jianguo Zhang Wei Zhu Xiao Wang Yun Bai Bin Feng Qianyu Zhuang Chang Han Shengru Wang Qimiao Hu Senbo An Mei Wan Shiwu Dong Jianzhong Xu Xisheng Weng Xu Cao 2021Bone Research2021,9,2:7
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