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268篇 您的检索式:作者名="Xinwei Wang"
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1A review on carrier aircraft dispatch path planning and control on deck显示文摘As an important part in sortie/recovery process,the dispatch of carrier aircraft not only affects the sortie/recovery efficiency and safety,but also has severe influence on the carrier's combat efficiency and the comprehensive support capability.Path planning is the key to improve the efficiency and safety during the dispatch process.The main purpose of this paper is to propose a comprehensive investigation of techniques and research progress for the carrier aircraft's dispatch path planning on the deck.Three different dispatch modes of carrier aircraft and the corresponding modeling technologies are investigated,and the aircraft's dispatch path planning techniques and algorithms have been classified into different classes.Moreover,their assumptions and drawbacks have been discussed for single aircraft and multiple aircraft.To make the research work more comprehensive,the corresponding tracking control methodologies are also discussed.Finally,due to the similarity of path planning problem between the carrier aircraft's dispatch and those in other fields,this paper provides an exploratory prospect of the knowledge or method learned from other fields.Xinwei WANG Jie LIU Xichao SU Haijun PENG Xudong ZHAO Chen LU 2020Chinese Journal of Aeronautics2020,33,12:14
2Blade optimization design and performance investigations of an ultra-low specific speed centrifugal blower显示文摘The ultra-low specific speed centrifugal blower is widely used in energy industries due to its features such as low flow rate,high pressure and low manufacturing cost. However,the width-to-diameter ratio of the above blower becomes relatively small to satisfy the needed operation condition and its performances are considerably degraded as a result of relatively high leakage,disc friction and passage friction loss consequently. The purpose of this paper is to improve its performance through the optimization design of the blade’s profile properly. Based on artificial neural networks (ANN) and hierarchical fair competition genetic algorithms with dynamic niche (HFCDN-GAs),the optimization design approach is established. By conjoining Bezier parameterization and FINE/TURBO solver,the optimized blade is designed by adjusting the profile gradually. An industrial ultra-low specific speed centrifugal blower with parallel hub and shroud has been selected as a reference case for optimization design. The performance investigations of the centrifugal blowers with different types of blades are conducted. The conclusions of the performance improvement of the optimized blade provide positive evidences in the application of the optimization design of the above blower blade.ZHANG Bin WANG Tong GU ChuanGang SHU XinWei 2011Science China(Technological Sciences)2011,54,1:12
3Accumulation and source of heavy metals in sediment of a reservoir near an industrial park of northwest China显示文摘Yuanjie ZHU Xinwei LU Linna YANG Lijun WANG 2016Frontiers of Earth Science2016,10,4:11
4Internet of Things to network smart devices for ecosystem monitoring显示文摘Smart, real-time, low-cost, and distributed ecosystem monitoring is essential for understanding and managing rapidly changing ecosystems. However, new techniques in the big data era have rarely been introduced into operational ecosystem monitoring, particularly for fragile ecosystems in remote areas.We introduce the Internet of Things(IoT) techniques to establish a prototype ecosystem monitoring system by developing innovative smart devices and using IoT technologies for ecosystem monitoring in isolated environments. The developed smart devices include four categories: large-scale and nonintrusive instruments to measure evapotranspiration and soil moisture, in situ observing systems for CO2 and d13 C associated with soil respiration, portable and distributed devices for monitoring vegetation variables, and Bi-CMOS cameras and pressure trigger sensors for terrestrial vertebrate monitoring. These new devices outperform conventional devices and are connected to each other via wireless communication networks. The breakthroughs in the ecosystem monitoring IoT include new data loggers and longdistance wireless sensor network technology that supports the rapid transmission of data from devices to wireless networks. The applicability of this ecosystem monitoring IoT is verified in three fragile ecosystems, including a karst rocky desertification area, the National Park for Amur Tigers, and the oasis-desert ecotone in China. By integrating these devices and technologies with an ecosystem monitoring information system, a seamless data acquisition, transmission, processing, and application IoT is created. The establishment of this ecosystem monitoring IoT will serve as a new paradigm for ecosystem monitoring and therefore provide a platform for ecosystem management and decision making in the era of big data.Xin Li Ning Zhao Rui Jin Shaomin Liu Xiaomin Sun Xuefa Wen Dongxiu Wu Yan Zhou Jianwen Guo Shiping Chen Ziwei Xu Mingguo Ma Tianming Wang Yonghua Qu Xinwei Wang Fangming Wu Yuke Zhou 2019Science Bulletin2019,64,17:10
5Distributed Scheduling Problems in Intelligent Manufacturing Systems显示文摘Currently,manufacturing enterprises face increasingly fierce market competition due to the various demands of customers and the rapid development of economic globalization.Hence,they have to extend their production mode into distributed environments and establish multiple factories in various geographical locations.Nowadays,distributed manufacturing systems have been widely adopted in industrial production processes.In recent years,many studies have been done on the modeling and optimization of distributed scheduling problems.This work provides a literature review on distributed scheduling problems in intelligent manufacturing systems.By summarizing and evaluating existing studies on distributed scheduling problems,we analyze the achievements and current research status in this field and discuss ongoing studies.Insights regarding prior works are discussed to uncover future research directions,particularly swarm intelligence and evolutionary algorithms,which are used for managing distributed scheduling problems in manufacturing systems.This work focuses on journal papers discovered using Google Scholar.After reviewing the papers,in this work,we discuss the research trends of distributed scheduling problems and point out some directions for future studies.Yaping Fu Yushuang Hou Zifan Wang Xinwei Wu Kaizhou Gao Ling Wang 2021Tsinghua Science and Technology2021,26,5:9
6MiR156 regulates anthocyanin biosynthesis through SPL targets and other microRNAs in poplar显示文摘Anthocyanins biosynthesized from the flavonoid pathway are types of pigments that are involved in the protection of poplar from biotic and abiotic stresses.Previous researchers studying anthocyanin-related transcription factors and structural genes in poplar have made significant discoveries.However,little is known about the regulatory role of microRNAs in anthocyanin biosynthesis in poplar.Here,we overexpressed miR156 in poplar to study the comprehensive effects of the miR156-SPL module on the biosynthesis of anthocyanins.Small RNA sequencing analysis revealed 228 microRNAs differentially expressed in transgenic poplar plants with dramatically increased miR156 levels.Furthermore,integrated microRNAomic and transcriptomic analysis suggested that two microRNAs,miR160h,and miR858,have the potential to affect anthocyanin accumulation in poplar by regulating auxin response factors and MYB transcription factors,respectively.Additionally,the accumulation of miR160h and miR858 displayed a positive correlation with miR156 levels,suggesting a possible interaction between the miR156-SPL module and these microRNAs in poplar.Last,metabolomics analysis revealed that the levels of anthocyanins,flavones,and flavonols were substantially elevated in transgenic poplar plants overexpressing miR156 compared with the wild type,whereas the total lignin content was reduced in the transgenic plants.Taken together,our results indicate that miR156 can fine tune the anthocyanin biosynthetic pathway via multiple factors,including microRNAs,transcription factors,and the levels of structural genes,in poplar.This provides additional clues for understanding the complex regulatory network of anthocyanin biosynthesis in woody plants.Yamei Wang Wenwen Liu Xinwei Wang Ruijuan Yang Zhenying Wu HanWang LeiWang Zhubing Hu Siyi Guo Hailing Zhang Jinxing Lin Chunxiang Fu 2020Horticulture Research2020,7,1:9
7Association of renal function with cardiac reverse remodeling and long-term outcome in heart failure patients following cardiac resynchronization therapy显示文摘Cai Chi Hua Wei Ding Ligang Wang Jing Chen Keping Yang Xinwei Liu Zhimin Zhang Shu 2014Chinese Medical Journal2014,,23:8
8高流速辉光放电质谱法检测镍基高温合金中痕量元素及其深度分布显示文摘为了制造效率更高,输出功率更大,同时散热更少的飞机引擎,需要燃料的燃烧温度也越来越高,因此航空发动机的生产商和涡轮发动机的制造者对材料和部件提出了新的要求。在较高的温度时,为了维持材料的机械性能和提高合金部件的控制能力,需要继续改进原有的高温合金或者开发新一代高温合金,同时制造者也在建立更加严格的规格界限和质量控制规程。本文主要描述具有高流速离子源的辉光放电质谱仪,这种仪器的分析速度快,灵敏度高,非常适合于高温合金的分析。仪器除了可以做搜索分析和基材的杂质元素含量的检测之外,其直接进样的方法可以更好地检测出各种元素在产品高温受热之后的分布情况,以及痕量元素在保护层和界面的纵向分布。Kenghsien Su Xinwei Wang Karol Putyera 2011冶金分析2011,31,11:6
9Pathological changes in the lungs and lymphatic organs of 12 COVID-19 autopsy cases显示文摘Systematic autopsy and comprehensive pathological analyses of COVID-19 decedents should provide insights into the disease characteristics and facilitate the development of novel therapeutics.In this study,we report the autopsy findings from the lungs and lymphatic organs of 12 COVID-19 decedents—findings that evaluated histopathological changes;immune cell signature and inflammatory factor expression in the lungs,spleen and lymph nodes.Here we show that the major pulmonary alterations included diffuse alveolar damage,interstitial fibrosis and exudative inflammation featured with extensive serous and fibrin exudates,macrophage infiltration and abundant production of inflammatory factors(IL-6,IP-10,TNFo?and IL-I f).The spleen and hilar lymph nodes contained lesions with tissue structure disruption and immune cell dysregulation,including lymphopenia and macrophage accumulation.These findings provide pathological evidence that links injuries of the lungs and lymphatic organs with the fatal systematic respiratory and immune malfunction in critically ill COVID-19 patients.Qian Liu Yu Shi Jun Cai Yaqi Duan Rongshuai Wang Hongyan Zhang Qiurong Ruan Jiansha Li Lei Zhao Yifang Ping Rong Chen Liang Ren Xiaochun Fei Heng Zhang Rui Tang Xi Wang Tao Luo Xindong Liu Xuequan Huang Zhenhua Liu Qilin Ao Yong Ren Jing Xiong Zhicheng He Haibo Wu Wenjuan Fu Pengnan Zhao Xinwei Chen Guoqiang Qu Yunyun Wang Xi Wang Jia Liu Dongfang Xiang Sanpeng Xu Xiaowei Zhou Qingrui Li Jinghong Ma Heng Li Jie Zhang Sizhe Huang Xiaohong Yao Yiwu Zhou Chaofu Wang Dingyu Zhang Guoping Wang Liang Liu Xiu-Wu Bian 2020National Science Review2020,7,12:6
10Speciation, sources, and risk assessment of heavy metals in suburban vegetable garden soil in Xianyang City, Northwest China显示文摘Intensive anthropogenic activities can lead tosoil heavy metal contamination resulting in potential risksto the environment and to human health. To reveal theconcentrations, speciation, sources, pollution level, andecological risk of heavy metals in vegetable garden soil, atotal of 136 soil samples were collected from threevegetable production fields in the suburbs of XianyangCity, Northwest China. These samples were analyzed byinductively coupled plasma- atomic emission spectrometryand atomic fluorescence spectrometry. The results showedthat the mean concentrations of Cd, Co, Cu, Mn, Pb, Zn,and Hg in vegetable garden soil were higher than thecorresponding soil element background values of ShaanxiProvince. The heavy metals studied in vegetable gardensoil were primarily found in the residual fraction,averaging from 31.26% (Pb)to 90.23% (Cr). Consideringthe non-residual fractions, the mobility or potential riskwas in the order of Pb (68.74%)〉 Co (60.54%)〉 Mn(59.28%)〉Cd (53.54%)〉〉Ni (23.36%)〉Zn(22.73%) 〉 Cu (14.93%) 〉 V (11.81%) 〉 Cr (9.78%). Cr,Mn, Ni, V, and As in the studied soil were related to soil-forming parent materials, while Cu, Hg, Zn, Cd, Co, andPb were associated with the application of plastic films,fertilizers, and pesticides, as well as traffic emissions andindustrial fumes. Cr, Ni, V, and As presented lowcontamination levels, whereas Co, Cu, Mn, Pb, and Znlevels were moderate, and Cd and Hg were high.Ecological risk was low for Co, Cr, Cu, Mn, Pb, Zn, andAs, with high risk observed for Cd and Hg. The overallpollution level and ecological risk of these heavy metalswere high.Lijun WANG Wendong TAO Richard C. SMARDON Xue XU Xinwei LU 2018Frontiers of Earth Science2018,12,2:5
11Melatonin lowers edema after spinal cord injury显示文摘Melatonin has been shown to diminish edema in rats. Melatonin can be used to treat spinal cord injury. This study presumed that melatonin could relieve spinal cord edema and examined how it might act. Our experiments found that melatonin(100 mg/kg, i.p.) could reduce the water content of the spinal cord, and suppress the expression of aquaporin-4 and glial fibrillary acidic protein after spinal cord injury. This suggests that the mechanism by which melatonin alleviates the damage to the spinal cord by edema might be related to the expression of aquaporin-4 and glial fibrillary acidic protein.Cheng Li Xiao Chen Suchi Qiao Xinwei Liu Chang Liu Degang Zhu Jiacan Su Zhiwei Wang 2014Neural Regeneration Research2014,9,24:5
12Effects of uranium on hydrocarbon generation of hydrocarbon source rocks with type-Ⅲ kerogen显示文摘Organic-inorganic interaction exists universally and is important in the process of mineral resources formation.It is the essential reason why organic oil,gas,coal and inorganic uranium coexist,accumulate,and mineralize in the same sedimentary basins.Hydrocarbon-generating simulation experiment was conducted using low-mature hydrocarbon source rock containing kerogen type III with uranium(UO2CO3 solution)added to study the effects of uranium on the hydrocarbon generation of hydrocarbon source rocks.Experiment results show that uranium can enhance the yield of gas hydrocarbon,promote the total gas output,and increase the total hydrocarbon production(mass or volume).Uranium may lower the hydrocarbon generation threshold temperature and lead to the generation of liquid hydrocarbon in the relative low temperature of hydrocarbon source rock.Uranium can enhance the yield of saturated hydrocarbon,promote the low molecular weight hydrocarbons generating,and in turn increase the content of CH4 and the content of dry gas of the generated hydrocarbons.Uranium is one of the potential inorganic accelerating factors of the immature hydrocarbons.MAO GuangZhou LIU ChiYang ZHANG DongDong QIU XinWei WANG JianQiang LIU BaoQuan LIU JingJiang QU ShaoDong DENG Yu WANG FeiFei ZHANG Can 2014Science China Earth Sciences2014,57,6:5
13The influence of urban park characteristics on bird diversity in Nanjing, China显示文摘Background:Habitat loss,fragmentation and decrease of habitat quality caused by urbanization have led to a dramatic decline in biodiversity worldwide.For highly urbanized areas,parks have become“islands”or habitat fragments for wildlife.As an important indicator group of urban ecosystem health,the response of birds to urbanization has attracted the global attention of ecologists.Understanding the key factors affecting bird diversity in urbanized environment is crucial to the protection of biodiversity in urban ecosystems.Methods:We used the line-transect method to survey birds in 37 urban parks in Nanjing,China.We also measured a number of park characteristics(area,isolation,shape index,environmental noise,distance to city center,and habitat diversity)that are commonly assumed to influence bird diversity.We then used the information-theoretic multi-model inference approach to determine which park characteristics had significant impacts on bird species richness.Results:We found that park area,habitat diversity and the distance to city center were the best positive predictors of bird species richness in Nanjing urban parks.By contrast,park isolation,park shape and environmental noise had little or no influence on bird diversity.Conclusions:Our study highlights the importance of park area,habitat diversity and the distance to city center in determining bird diversity in Nanjing city parks.Therefore,from a conservation viewpoint,we recommend that large parks with complex and diverse habitats far away from the city center should be retained or constructed to increase bird diversity in urban design and planning.Xueru Yang Xinwei Tan Chuanwu Chen Yanping Wang 2020Avian Research2020,11,4:5
14AERODYNAMIC OPTIMIZATION FOR TURBINE BLADE BASED ON HIERARCHICAL FAIR COMPETITION GENETIC ALGORITHMS WITH DYNAMIC NICHE显示文摘基于层次公平竞争,有动态壁龛(HFCDN 气体) 的基因算法结合了的汽轮机片设计的一条全球优化途径平均 Reynolds 的海军司烧(RANS ) 方程被介绍。以便遇见气体的搜索理论和汽轮机的空气动力学的表演, Bezier 曲线被采用到 parameterize 汽轮机片侧面,和与优化相关的一个健康函数被设计。设计变量是点 Bezier 的典型多角形的纵标弄弯代表汽轮机片侧面的控制。对象函数是汽轮机片的最大的提起拖比率。限制条件考虑领先、后面的边金属角度,和力量和汽轮机片的空气动力学的表演。并且限制条件的处理方法是灵活惩罚功能。测试功能的集中历史显示 HFCDN 气体能在一些搜索步骤以内定位全球最佳并且有高坚韧性。优化的片的提起拖比率比原来的的高是 8.3% 。结果证明建议全球优化途径为汽轮机片是有效的。SHU Xinwei GU Chuangang WANG Tong YANG Bo 2007Chinese Journal of Mechanical Engineering2007,20,6:5
15Vegetation and climate changes during the last 8660 cal.a BP in central Mongolia,based on a high-resolution pollen record from Lake Ugii Nuur显示文摘Based on modern pollen studies and reliable chronology of nine AMS 14C dates, a detailed history of vegetation and climate changes during the past 8660 cal. a BP was reconstructed by a high-resolution pollen record from Ugii Nuur in central Mongolia. Poaceae-steppe dominated the study area and the climate was mild and semi-humid before 7800 cal. a BP with a noticeable cool and humid interval at 8350―8250 cal. a BP. Xerophytic plant increased and the climate became warm and dry gradually since 7800 cal. a BP. From 6860 to 3170 cal. a BP, semi-desert steppe expanded, suggesting a prolonged warm and dry climate. Between 3170 and 2340 cal. a BP, regional forest steppe expanded whereas semi-desert steppe retreated, indicating the climate became cool and wet gradually and the humidity reached the maximum at the end of this stage. From 2340 to 1600 cal. a BP, a general cool and wet climate prevailed. And the climatic instability increased after 1600 cal. a BP. Review of regional pub-lished palaeoclimatic records implies that the mid-Holocene dry climate might have prevailed in vast areas from central Mongolia to arid areas of northwest China. Pollen-based climate reconstruction for UG04 core was well correlated with the result of climate model on Central Asia by Bush. In addition, several abrupt climatic events (cool and wet) were found and some could be broadly compared with the cool events in Atlantic.WANG Wei MA YuZhen FENG ZhaoDong MENG HongWei SANG YanLi ZHAI XinWei 2009Chinese Science Bulletin2009,54,9:5
16Porous FeO_x/BiVO_(4-δ)S_(0.08): Highly efcient photocatalysts for the degradation of Methylene Blue under visible-light illumination显示文摘Porous S-doped bismuth vanadate with an olive-like morphology and its supported iron oxide(y wt.% FeOx/BiVO4 δS0.08, y =0.06, 0.76, and 1.40) photocatalysts were fabricated using the dodecylamine-assisted alcohol-hydrothermal and incipient wetness impregnation methods, respectively. It is shown that the y wt.% FeOx/BiVO4 δS0.08photocatalysts contained a monoclinic scheetlite BiVO4 phase with a porous olive-like morphology, a surface area of 8.8–9.2 m2/g, and a bandgap energy of 2.38–2.42 eV. There was co-presence of surface Bi5+, Bi3+, V5+, V3+, Fe3+, and Fe2+species in y wt.% FeOx/BiVO4 δS0.08. The 1.40 wt.% FeOx/BiVO4 δS0.08sample performed the best for Methylene Blue degradation under visible-light illumination. The photocatalytic mechanism was also discussed. We believe that the sulfur and FeOx co-doping, higher oxygen adspecies concentration, and lower bandgap energy were responsible for the excellent visible-light-driven catalytic activity of 1.40 wt.% FeOx/BiVO4 δS0.08.Zhenxuan Zhao Hongxing Dai Jiguang Deng Yuxi Liu Yuan Wang Xinwei Li Guangmei Bai Baozu Gao Chak Tong Au 2013Journal of Environmental Sciences2013,25,10:4
17Analysis of Non-Orthogonal Multiple Access for 5G显示文摘The major challenge faced by the fifth generation(5G) mobile network is higher spectral efficiency and massive connectivity,i.e.,the target spectrum efficiency is 3 times over 4G,and the target connection density is one million devices per square kilometer.These requirements are difficult to be satisfied with orthogonal multiple access(OMA) schemes.Non-orthogonal multiple access(NOMA) has thus been proposed as a promising candidate to address some of the challenges for 5G.In this paper,a comprehensive survey of different candidate NOMA schemes for 5G is presented,where the usage scenarios of5 G and the application requirements for NOMA are firstly discussed.A general framework of NOMA scheme is established and the features of typical NOMA schemes are analyzed and compared.We focus on the recent progress and challenge of NOMA in standardization of international telecommunication union(ITU),and 3rd generation partnership project(3GPP).In addition,prototype development and future research directions are also provided respectively.Yingmin Wang Bin Ren Shaohui Sun Shaoli Kang Xinwei Yue 2016China Communications2016,13,S2:4
18Response of Microbial Community to Petroleum Stress and Phosphate Dosage in Sediments of Jiaozhou Bay, China显示文摘The dynamic microcosms were used to evaluate the effect of oil spills on microbial ecological system in marine sediment and the enhancement of nutrient on the oil removal. The function and structure of microbial community caused by the oil pollution and phosphate dosage were simultaneously monitored by dehydrogenase activity assay and PCR-denaturing gradient gel electrophoresis(DGGE) techniques. The results indicated that the amount of total bacteria in all dynamic microcosms declined rapidly with incubation time. The number of petroleum-degrading bacteria and the activity of sediment dehydrogenase were gradually enhanced by petroleum in the oil-treated microcosms, while they both showed no obvious response to phosphate dosage. In comparison, phosphate spiked heterotrophic bacteria and they showed a significant increase in amount. DGGE profiles indicated that petroleum dosage greatly changed community structure, and the bacteria belonged to class Deltaproteobacteria, and phyla Bacteroidetes and Chlorobi were enriched. This study demonstrated that petroleum input greatly impacted the microbial community structure and consequently the marine sediment petroleum-degrading activity was enhanced. Phosphate dosage would multiply heterotrophic bacteria but not significantly enhance the petroleum degradation.ZHAO Yangguo CHEN Min BAI Jie LI Xinwei Farhana Zulfiqar WANG Qianli 2014Journal of Ocean University of China2014,13,2:4
19PDCD5 regulates iNKT cell terminal maturation and iNKT1 fate decision显示文摘Invariant natural killer T1(iNKT1)cells are characterized by the preferential expression of T-box transcription factor T-bet(encoded by Tbx21)and the production of cytokine IFN-γ,but the relationship between the developmental process and iNKT1 lineage diversification in the thymus remains elusive.We report in the present study a crucial role of programmed cell death 5(PDCD5)in iNKT cell terminal maturation and iNKT1 fate determination.Mice with T cell-specific deletion of PDCD5 had decreased numbers of thymic and peripheral iNKT cells with a predominantly immature phenotype and defects in response toα-galactosylceramide.Loss of PDCD5 also selectively abolished the iNKT1 lineage by reducing T-bet expression in iNKT cells at an early thymic developmental stage(before CD44 upregulation).We further demonstrated that TOX2,one of the high mobility group proteins that was highly expressed in iNKT cells at stage 1 and could be stabilized by PDCD5,promoted the permissive histone H3K4me3 modification in the promoter region of Tbx21.These data indicate a pivotal and unique role of PDCD5/TOX2 in iNKT1 lineage determination.They also suggest that the fate of iNKT1 may be programmed at the developmental stage of iNKT cells in the thymus.Ke Wang Xinwei Zhang Yifan Wang Gaowen Jin Mingyang Li Shusong Zhang Jie Hao Rong Jin Xiaojun Huang Hounan Wu Jun Zhang Yingyu Chen Qing Ge 2019Cellular & Molecular Immunology2019,16,9:4
20Nanoscale inhibition of polymorphic and ambidextrous lAPP amyloid aggregation with small molecules显示文摘Aleksandr Kakinen Jozef Adamcik Bo Wang Xinwei Ge Raffaele Mezzenga Thomas P. Davis Feng Ding Pu Chun Ke 2018Nano Research2018,11,7:4
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