维普中文期刊产品整合服务
44篇 您的检索式:作者名="Shixiang Wang"
    题名 作者 年代 出处 被引量
1Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals:fabrication and application显示文摘Optical waveguides are far more than mere connecting elements in integrated optical systems and circuits.Benefiting from their high optical confinement and miniaturized footprints,waveguide structures established based on crystalline materials,particularly,are opening exciting possibilities and opportunities in photonic chips by facilitating their on-chip integration with different functionalities and highly compact photonic circuits.Femtosecond-laser-direct writing(FsLDW),as a true three-dimensional(3D)micromachining and microfabrication technology,allows rapid prototyping of on-demand waveguide geometries inside transparent materials via localized material modification.The success of FsLDW lies not only in its unsurpassed aptitude for realizing 3D devices but also in its remarkable material-independence that enables cross-platform solutions.This review emphasizes FsLDW fabrication of waveguide structures with 3D layouts in dielectric crystals.Their functionalities as passive and active photonic devices are also demonstrated and discussed.Yuechen Jia Shixiang Wang Feng Chen 2020Opto-Electronic Advances2020,3,10:31
2One-year clinical study of NeuroR egen scaffold implantation following scar resection in complete chronic spinal cord injury patients显示文摘The objective of this clinical study was to assess the safety and feasibility of the collagen scaffold, Neuro Regen scaffold, one year after scar tissue resection and implantation. Scar tissue is a physical and chemical barrier that prevents neural regeneration. However, identification of scar tissue is still a major challenge. In this study, the nerve electrophysiology method was used to distinguish scar tissue from normal neural tissue, and then different lengths of scars ranging from 0.5–4.5 cm were surgically resected in five complete chronic spinal cord injury(SCI) patients. The NeuroR egen scaffold along with autologous bone marrow mononuclear cells(BMMCs), which have been proven to promote neural regeneration and SCI recovery in animal models, were transplanted into the gap in the spinal cord following scar tissue resection. No obvious adverse effects related to scar resection or Neuro Regen scaffold transplantation were observed immediately after surgery or at the 12-month follow-up. In addition, patients showed partially autonomic nervous function improvement, and the recovery of somatosensory evoked potentials(SSEP) from the lower limbs was also detected. The results indicate that scar resection and Neuro Regen scaffold transplantation could be a promising clinical approach to treating SCI.Zhifeng Xiao Fengwu Tang Jiaguang Tang Huilin Yang Yannan Zhao Bing Chen Sufang Han Nuo Wang Xing Li Shixiang Cheng Guang Han Changyu Zhao Xiaoxiong Yang Yumei Chen Qin Shi Shuxun Hou Sai Zhang Jianwu Dai 2016Science China(Life Sciences)2016,59,7:18
3Involvement of CsWRKY70 in salicylic acid-induced citrus fruit resistance against Penicillium digitatum显示文摘Penicillium digitatum causes serious losses in postharvest citrus fruit.Exogenous salicylic acid(SA)can induce fruit resistance against various pathogens,but the mechanism remains unclear.Herein,a transcriptome-based approach was used to investigate the underlying mechanism of SA-induced citrus fruit resistance against P.digitatum.We found that CsWRKY70 and genes related to methyl salicylate(MeSA)biosynthesis(salicylate carboxymethyltransferase,SAMT)were induced by exogenous SA.Moreover,significant MeSA accumulation was detected in the SA-treated citrus fruit.The potential involvement of CsWRKY70 in regulating CsSAMT expression in citrus fruit was studied.Subcellular localization,dual luciferase,and electrophoretic mobility shift assays and an analysis of transient expression in fruit peel revealed that the nucleus‐localized transcriptional activator CsWRKY70 can activate the CsSAMT promoter by recognizing the W-box element.Taken together,the findings from this study offer new insights into the transcriptional regulatory mechanism of exogenous SA-induced disease resistance in Citrus sinensis fruit.Bing Deng Wenjun Wang Changqing Ruan Lili Deng Shixiang Yao Kaifang Zeng 2020Horticulture Research2020,7,1:6
4Sleep disorders and its related risk factors in patients undergoing chronic peritoneal dialysis显示文摘Li Han Li Xiaobei Feng Sujuan Zhang Guizhi Wang Wei Wang Shixiang 2014Chinese Medical Journal2014,,7:5
5Production and emission of phosphine gas from wetland ecosystems显示文摘Phosphine is a part of an atmospheric link of phosphorus cycle on earth, which could be an important pathway for phosphorus transport in environment.Wetland ecosystems are important locations for global biogeochemical phosphorus cycle.In this study, production and emission fluxes of free phosphine from four wetlands types in southern China were observed in different seasons.The results showed that the concentration of phosphine liberated from wetlands was at pg/m3-ng/m3 level.The emission concentrations of different wetlands followed the sequence:paddy field(51.83 ± 3.06) ng/m3 marsh(46.54 ± 20.55) ng/m3 > lake(37.05 ± 22.74) ng/m3 coastal wetland(1.71 ± 0.73) ng/m3, the positive phosphine emission flux occurred in rice paddy field(6.67 ± 5.18) ng/(m2·hr) and marsh(6.23 ± 26.9) ng/(m2·hr), while a negative phosphine flux of(-13.11 ± 35.04) ng/(m2·hr) was observed on the water-air interface of Lake Taihu, suggesting that paddy field and marsh may be important sources for phosphine gas in atmosphere, while lake may be a sink of atmospheric phosphine gas during the sampling period.Atmospheric phosphine levels and emission flux from Yancheng marsh and rice paddy field varied in different seasons and vegetational zones.Both diffusion resistance in aqueous phase and temperature were dominating factors for the production and transportation of phosphine to atmosphere.Chao Han Xueyuan Gu Jinju Geng Yuning Hong Rui Zhang Xiaorong Wang Shixiang Gao 2010Journal of Environmental Sciences2010,22,9:5
6Differences in the Tectonic Evolution of Basins in the CentralSouthern South China Sea and their Hydrocarbon Accumulation Conditions显示文摘To reveal the causes of differences in the hydrocarbon accumulation in continental marginal basins in the centralsouthern South China Sea,we used gravity-magnetic,seismic,drilling,and outcrop data to investigate the tectonic histories of the basins and explore how these tectonic events controlled the hydrocarbon accumulation conditions in these basins.During the subduction of the Cenozoic proto-South China Sea and the expansion of the new South China Sea,the continental margin basins in the central-southern South China Sea could be classified as one of three types of epicontinental basins:southern extensional-foreland basins,western extensional-strike slip basins,and central extensional-drift basins.Because these basins have different tectonic and sedimentary histories,they also differ in their accumulated hydrocarbon resources.During the Cenozoic,the basin groups in the southern South China Sea generally progressed through three stages:faulting and subsidence from the late Eocene to the early Miocene,inversion and uplift in the middle Miocene,and subsidence since the late Miocene.Hydrocarbon source rocks with marine-continental transitional facies dominated byⅡ-Ⅲkerogen largely developed in extremely thick Miocene sedimentary series with the filling characteristics being mainly deep-water deposits in the early stage and shallow water deposits in the late stage.With well-developed sandstone and carbonate reservoirs,this stratum has a strong hydrocarbon generation potential.During the Cenozoic,the basin groups in the western South China Sea also progressed through the three developmental stages discussed previously.Hydrocarbon source rocks with lacustrine facies,marine-continental transitional facies,and terrigenous marine facies dominated byⅡ2-Ⅲkerogen largely developed in the relatively thick stratum with the filling characteristics being mainly lacustrine deposits in the early stage and marine deposits in the late stage.As a reservoir comprised of self-generated and self-stored sandstone,this unit also has a high hydrocarbon generation potential.Throughout those same three developmental stages,the basin groups in the central South China Sea generated hydrocarbon source rocks with terrigenous marine facies dominated byⅢkerogen that have developed in a stratum with medium thicknesses with the filling characteristics being mainly sandstone in the early stage and carbonate in the late stage.This reservoir,which is dominated by lower-generation and upper-storage carbonate rocks,also has a high hydrocarbon generation potential.TANG Wu ZHAO Zhigang SONG Shuang WANG Yibo XIE Xiaojun LIU Shixiang 2021Acta Geologica Sinica(English Edition)2021,95,1:3
7Long-term clinical observation of patients with acute and chronic complete spinal cord injury after transplantation of Neuro Regen scaffold显示文摘Spinal cord injury(SCI)often results in an inhibitory environment at the injury site.In our previous studies,transplantation of a scaffold combined with stem cells was proven to induce neural regeneration in animal models of complete SCI.Based on these preclinical studies,collagen scaffolds loaded with the patients’own bone marrow mononuclear cells or human umbilical cord mesenchymal stem cells were transplanted into SCI patients.Fifteen patients with acute complete SCI and 51 patients with chronic complete SCI were enrolled and followed up for 2 to 5 years.No serious adverse events related to functional scaffold transplantation were observed.Among the patients with acute SCI,five patients achieved expansion of their sensory positions and six patients recovered sensation in the bowel or bladder.Additionally,four patients regained voluntary walking ability accompanied by reconnection of neural signal transduction.Among patients with chronic SCI,16 patients achieved expansion of their sensation level and 30 patients experienced enhanced reflexive defecation sensation or increased skin sweating below the injury site.Nearly half of the patients with chronic cervical SCI developed enhanced finger activity.These long-term follow-up results suggest that functional scaffold transplantation may represent a feasible treatment for patients with complete SCI.Fengwu Tang Jiaguang Tang Yannan Zhao Jiaojiao Zhang Zhifeng Xiao Bing Chen Guang Han Na Yin Xianfeng Jiang Changyu Zhao Shixiang Cheng Ziqiang Wang Yumei Chen Qiaoling Chen Keran Song Zhiwei Zhang Junjie Niu Lingjun Wang Qin Shi Liang Chen Huilin Yang Shuxun Hou Sai Zhang Jianwu Dai 2022Science China(Life Sciences)2022,65,5:3
8Generation and imaging of a tunable ultrafast intensity-rotating optical field with a cycle down to femtosecond region显示文摘A tunable ultrafast intensity-rotating optical field is generated by overlapping a pair of 20Hz,800 nm chirped pulses with a Michelson interferometer(MI).Its rotating rate can be up to 10 trillion radians per second(Trad/s),which can be flexibly tuned with a mirror in the MI.Besides,its fold rotational symmetry structure is also changeable by controlling the difference from the topological charges of the pulse pair.Experimentally,we have successfully developed a twopetal lattice with a tunable rotating speed from 3.9 Trad/s up to 11.9 Trad/s,which is confirmed by our single-shot ultrafast frame imager based on noncollinear optical-parametric amplification with its highest frame rate of 15 trillion frames per second(Tfps).This work is carried out at a low repetition rate.Therefore,it can be applied at relativistic,even ultrarelativistic,intensities,which usually operate in low repetition rate ultrashort and ultraintense laser systems.We believe that it may have application in laser-plasma-based accelerators,strong terahertz radiations and celestial phenomena.Xuanke Zeng Shuiqin Zheng Yi Cai Hongyu Wang Xiaowei Lu Honggeng Wang Jingzhen Li Weixin Xie Shixiang Xu 2020High Power Laser Science and Engineering2020,8,1:2
9Spatial distribution of planktonic ciliates in the western Pacifc Ocean: along the transect from Shenzhen (China) to Pohnpei (Micronesia)显示文摘Planktonic ciliates have been recognized as major consumers of nano-and picoplankton in pelagic ecosystems,playing pivotal roles in the transfer of matter and energy in the microbial loop.However,due to the difculties in identifcation,the species composition of ciliate assemblages,especially for the small,fragile,and naked species that usually dominate the ciliate communities in the oceanic waters,remains largely unknown.In the present study,22 stations along the transect from Shenzhen(China)to Pohnpei(Micronesia)were sampled for the enumeration of picoplankton and nanofagellates.In addition,pigment analysis of major phytoplankton groups along with the measurements of environmental variables including temperature,salinity,and nutrients were also carried out.Ciliates were identifed at species level using quantitative protargol stain to reveal the species composition and their distribution patterns from of-shore to open ocean.Ciliate abundance was positively correlated with phosphate,silicate,and pico-sized pigmented eukaryotes(PPEs),whereas the biomass was closely related with PPEs,heterotrophic nanofagellates,and chlorophytes.The combination of silicate and pigmented nanofagellates was identifed as the major factor driving the ciliate community composition.The close relationship between silicate and ciliate abundance and community structure needs further validation based on more data collected from oceanic waters.Our study showed the necessity of using techniques that can reveal the community composition at higher taxonomic resolutions in future studies on ciliates.Hungchia Huang Jinpeng Yang Shixiang Huang Bowei Gu Ying Wang Lei Wang Nianzhi Jiao Dapeng Xu 2021Marine Life Science & Technology2021,3,1:2
10Progress in the beam commissioning of separated function RFQ accelerator显示文摘Separated Function RFQ (SFRFQ) was proposed as a post accelerator of RFQ to accelerate heavy ions at low frequency. It introduces gap accelerating in the quadrupole electrodes, and therefore it has higher accelerating efficiency than the conventional RFQ accelerator. The first SFRFQ prototype cavity has been specially designed and constructed as a post accelerator to accelerate O+ beam from 1.03 MeV to 1.64 MeV. Based on accomplishment of low power measurement and high power test, the beam commissioning was carried out to verify its feasibility. The measured energy gain per cell of SFRFQ is 45 keV, which is about 60% higher than that of Peking University Integral Split Ring (ISR) RFQ.MingLei Kang (1) YuanRong Lu (1) Zhi Wang (1) Kun Zhu (1) XueQing Yan (1) ZhiYu Guo (1) ShuLi Gao (1) ShiXiang Peng (1) Ao Liu (2) JiaXun Fang (1) JiaEr Chen (1) 2011Science China(Physics,Mechanics & Astronomy)2011,54,S2:2
11Solubilization of polycyclic aromatic hydrocarbons by β-cyclodextrin and carboxymethyl-β-cyclodextrin 显示文摘GAO Shixiang WANG Liansheng HUANG Qingguo 1998Chemosphere1998,37,7:1
12Forty-five terawatt vortex ultrashort laser pulses from a chirped-pulse amplification system显示文摘We report on a vortex laser chirped-pulse amplification(CPA)system that delivers pulses with a peak power of 45 TW.A focused intensity exceeding 1019 W/cm2 has been demonstrated for the first time by the vortex amplification scheme.Compared with other schemes of strong-field vortex generation with high energy flux but narrowband vortex-converting elements at the end of the laser,an important advantage of our scheme is that we can use a broadband but size-limited q-plate to realize broadband mode-converting in the front end of the CPA system,and achieve high-power amplification with a series of amplifiers.This method is low cost and can be easily implemented in an existing laser system.The results have verified the feasibility to obtain terawatt and even petawatt vortex laser amplification by a CPA system,which has important potential applications in strong-field laser physics,for example,generation of vortex particle beams with orbital angular momentum,fast ignition for inertial confinement fusion and simulation of the extreme astrophysical environment.Zhenkuan Chen Shuiqin Zheng Xiaoming Lu Xinliang Wang Yi Cai Congying Wang Maijie Zheng Yuexia Ai Yuxin Leng Shixiang Xu Dianyuan Fan 2022High Power Laser Science and Engineering2022,10,5:1
13Solubilization of polycyclic aromatic hydrocarbons by β-cyclodextrin and carboxymethyl-β-cyclodextrin显示文摘GAO Shixiang WANG Liansheng HUANG Qingguo 1998Chemosphere1998,37,7:1
14Characterization of water-soluble species of PM10 and PM2.5 aerosols in urban area in Nanjing, China显示文摘Gehui Wang Liming Huang Shixiang Gao Songting Gao Liansheng Wang 2002Atmospheric Environment2002,,8:1
15The gradual subduction-collision evolution model of Proto-South China Sea and its control on oil and gas显示文摘This study involved outcrop,drilling,seismic,gravity,and magnetic data to systematically document the geological records of the subduction process of Proto-South China Sea(PSCS)and establish its evolution model.The results indicate that a series of arc-shaped ophiolite belts and calcalkaline magmatic rocks are developed in northern Borneo,both of which have the characteristics of gradually changing younger from west to east,and are direct signs of subduction and collision of PSCS.At the same time,the subduction of PSCS led to the formation of three accretion zones from the south to the north in Borneo,the Kuching belt,Sibu belt,and Miri belt.The sedimentary formation of northern Borneo is characterized by a three-layer structure,with the oceanic basement at the bottom,overlying the deep-sea flysch deposits of the Rajang–Crocker group,and the molasse sedimentary sequence that is dominated by river-delta and shallow marine facies at the top,recording the whole subduction–collision–orogeny process of PSCS.Further,seismic reflection and tomography also confirmed the subduction and collision of PSCS.Based on the geological records of the subduction and collision of PSCS,combined with the comprehensive analysis of segmented expansion and key tectonic events in the South China Sea,we establish the“gradual”subduction-collision evolution model of PSCS.During the late Eocene to middle Miocene,the Zengmu,Nansha,and Liyue–Palawan blocks were separated by West Baram Line and Balabac Fault,which collided with the Borneo block and Kagayan Ridge successively from the west to the east,forming several foreland basin systems,and PSCS subducted and closed from the west to the east.The subduction and extinction of PSCS controlled the oil and gas distribution pattern of southern South China Sea(SSCS)mainly in three aspects.First,the“gradual”closure process of PSCS led to the continuous development of many large deltas in SSCS.Second,the deltas formed during the subduction–collision of PSCS controlled the development of source rocks in the basins of SSCS.Macroscopically,the distribution and scale of deltas controlled the distribution and scale of source rocks,forming two types of source rocks,namely,coal measures and terrestrial marine facies.Microscopically,the difference of terrestrial higher plants carried by the delta controlled the proportion of macerals of source rocks.Third,the difference of source rocks mainly controlled the distribution pattern of oil and gas in SSCS.Meanwhile,the difference in the scale of source rocks mainly controlled the difference in the amount of oil and gas discoveries,resulting in a huge amount of oil and gas discoveries in the basin of SSCS.Meanwhile,the difference of macerals of source rocks mainly controlled the difference of oil and gas generation,forming the oil and gas distribution pattern of“nearshore oil and far-shore gas”.Xiaojun Xie Wu Tang Gongcheng Zhang Zhigang Zhao Shuang Song Shixiang Liu Yibo Wang Jia Guo 2023Acta Oceanologica Sinica2023,42,3:1
16HD-Zip Transcription Factor is Responsible for No-Lobed Leaf in Watermelon(Citrullus lanatus L.)显示文摘Leaf is a vital organ of plants that plays an essential role in photosynthesis and respiration.As an important agronomic trait in leaf development,leaf shape is classified into lobed,entire(no-lobed),and serrated in most crops.In this study,two-lobed leaf watermelon inbred lines WT2 and WCZ,and a no-lobed leaf watermelon inbred line WT20 were used to create two F_(2)populations.Segregation analysis suggested that lobed leaves were dominant over the no-lobed leaves,and it was controlled by a signal gene.A locus on watermelon chromosome 4 controlling watermelon lobed/no-lobed leaves was identified through BSA-seq strategy combined with linkage analysis.The candidate gene was fine-mapped to a 61.5 kb region between 21,224,481 and 21,285,957 bp on watermelon chromosome 4 using two F_(2)populations.Four functional genes were annotated in the candidate region,while sequences blast showed that there was a single-base deletion(A/-)only in the exon of Cla018360,which resulted in premature termination of translation in the no-lobed leaf lines.Function prediction showed that Cla018360 encodes an HD-Zip protein that has been reported to regulate the development of leaf shape.The single-base deletion also occurred in the HD-Zip domain.We inferred that the Cla018360 gene is the candidate gene for regulating the development of lobed/no-lobed leaves in watermelon.Gene expression analysis showed that Cla018360 was highly expressed in young leaves.Phylogenetic analysis showed that Cla018360 had a close genetic relationship with AtHB51,which had been reported to regulate the formation of leaf shape in Arabidopsis.Furthermore,transcriptome analysis showed that a total of 333 differentially expressed genes were identified between WT2 and WT20,of which 115 and 218 genes were upregulated and downregulated in no-lobed leaved watermelon WT20.This study not only provides a good entry point for studying leaf development but also provides foundational insights into breeding for special plant architecture in watermelon.Shixiang Duan Yaomiao Guo Yinping Wang Muhammad Jawad Umer Dongming Liu Sen Yang Huanhuan Niu Shouru Sun Luming Yang Junling Dou Huayu Zhu 2023Phyton-International Journal of Experimental Botany2023,92,5:1
17Prioritization of Veterinary Medicines in China’s Environment显示文摘Na Wang Xinyan Guo Zhengjun Shan Zanchang Wang Yi Jin Shixiang Gao 2014Human and Ecological Risk Assessment: An International Journal2014,,5:1
18Synthesis and lu- minescence properties of Eu2+ , Sma+ doped ( YxGd1-x )203 : Si4+,Mg2+ long lasting phosphor显示文摘Liu Yan Liu Shixiang Wang Mingwen 2010International Journal o{ Minerals Metallurgy and Materials2010,17,3:1
19An Improved Y-source Inverter with the Capability of Absorbing Bus Voltage Spike显示文摘In order to avoid the bus voltage spikes caused by leakage inductance endangering the normal operation of the inverter,based on the improved Y-source inverter,the traditional clamping structure and voltage peak absorption circuit are introduced,and a high step-up and low-voltage stress improved Y-source inverter with the capability of absorbing bus voltage spike is proposed.This topology fully utilizes the structural characteristics of the improved Y-source inverter itself,and further increases the DC-side voltage gain on the basis of ensuring the busbar voltage peak absorption capacity,while reducing the capacitor voltage stress.This paper demonstrates the superiority of the proposed topology over improved Y-source inverter topology by analyzing its working principle and voltage gain,simulation and experiment platform are constructed to perform the circuit simulation and experiment,and the correctness of the theoretical analysis of the proposed inverter and the effectiveness of the busbar voltage peak absorption capacity are verified.Xupeng Fang Xiaoli Wang Shixiang Zhong 2021CES Transactions on Electrical Machines and Systems2021,5,2:1
20Upconversion hollow nanospheres CeF_(3) co-doped with Yb^(3+) and Tm^(3+) for photocatalytic nitrogen fixation显示文摘Solar driven nitrogen(N_(2))fixation to synthesize ammonia is a potential alternative for the traditional Haber-Bosch approach to meeting industrial demand,but is largely hampered by the difficulties in the harvesting of solar energy and activating inert N_(2).In this work,hollow CeF_(3) nanospheres co-doped with activator Tm^(3+)and sensitizer Yb^(3+)(Yb^(3+):Tm^(3+):CeF_(3))were prepared by microwave hydrothermal method.The product was employed as a catalyst for photo-driven N_(2) fixation by adjusting the molar ratio of Ce^(3+):Yb^(3+):Tm^(3+).Results show that the porous hollow structure enhances the light-harvesting by physical scattering and reflection.In addition,heteroatom doping generates abundant fluorine vacancies(F_(V))which provide abundant active sites for adsorption and activation of N_(2).The sample with molar ratio of CeF_(3):Yb^(3+):Tm^(3+)at 178:20:2 demonstrates the highest utilization of solar energy attributed to the strongest upconversion capability of near-infrared(NIR)light to visible and ultraviolet(UV)light,and the NH_(4)+concentration achieves the highest value of 15.06μmol/(gcat∙h)under simulated sunlight while nearly 6.22μmol/(gcat∙h)under NIR light.Current study offers a promising and sustainable strategy for the fixation of atmospheric N_(2) using full-spectrum solar energy.Minghui Zhong Zhendong Wang Da Dai Baozhu Yang Shixiang Zuo Chao Yao Fengqin Wu Xiazhang Li 2022Journal of Rare Earths2022,40,4:1
返回顶部 每页显示:
共3页 首页 上一页 第1页 下一页 末页 /3 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费