维普中文期刊产品整合服务
133篇 您的检索式:作者名="Ruiliang"
    题名 作者 年代 出处 被引量
1The critical role of CD133*CD44+/high tumor cells in hematogenous metastasis of liver cancers显示文摘变形 hepatocellular 癌(HCC ) 是世界范围的最致命的癌症之一。然而,为它的转移负责的房间人口仍然保持大部分未知。这里,我们报导了那 CD133 + CD44 +/high 定义为肝癌症的造血的转移负责的肿瘤房间的亚群。人的 HCC 标本的 Immunohistochemical 调查表明 CD133 + 和 CD44 + HCC 房间的数字被增加并且与门静脉侵略被联系。净化的 CD133 + 或 CD44 HCC 细胞分别地在 clonogenic 生长和脉管的侵略是优异的。因此, CD133 和 CD44 的联合被用来定义一张新奇 HCC 亚人口。CD133 + CD44 , 然而并非 CD133 + CD44 low/− , CD133 CD44 或 CD133 CD44 low/−在裸体老鼠的 异种皮移植,生产 intrahepatic 或肺转移。由流动 cytometry 的人的 HCC 样品的进一步的分析证明 CD133 + CD44 + 肿瘤房间与门静脉转移被联系。CD133 + CD44 + 和 CD133 + 从变形 HCC 病人孤立的 CD44 肿瘤房间表明这些房间拥有不同基因表示侧面的二张不同人口包括了。我们的结果建议那 CD133 + CD44 + 肿瘤房间是为在肝癌症和那的造血的转移负责的一张特别人口这些房间可能是为 HCC 的治疗的目标转移。Ying Hou QifeiZou Ruiliang Ge Feng Shen Yizheng Wang 2012Cell Research2012,22,1:15
2Construction of ecological security patterns and ecological restoration zones in the city of Ningbo,China显示文摘Studying an ecological restoration zoning process under the background of ecological security patterns is of great significance to the rapid adjustment and optimization of a landscape pattern.In this study,a remote sensing ecological index and a morphological spatial pattern analysis method were used to assess the quality of habitats and identify ecological sources in the city of Ningbo;ecological corridors,ecological pinch points,and ecological barrier points were extracted by using a circuit theory to construct ecological security patterns and ecological restoration zones.The results indicate:(1)There were 47 ecological sources,and 83 key ecological corridors in Ningbo,and the ecological land area was about 1898.39 km^(2),accounting for 19.89%of the total study area.(2)The ecological source areas were distributed in“one patch and three belts”,and the low-resistance ecological corridors were concentrated in southern Yuyao city,western Haishu district,and central and western Fenghua district;the ecological network in the western and southern regions was dense.(3)There were four types of ecological restoration zones that need to be established,which were prioritized restoration zones,prioritized protection zones,key conservation zones,and general conservation zones distributed hierarchically from inner part towards outside.(4)Ninghai county,Yuyao city,and Fenghua district had large ecological land areas,however,prioritized restoration and protection zones in Ninghai and Fenghua were also large.The analysis results are expected to provide a reference for optimizing a territorial ecological space in a city.ZHANG Haitao LI Jialin TIAN Peng PU Ruiliang CAO Luodan 2022Journal of Geographical Sciences2022,32,4:7
3Distributed sensor fault diagnosis for a formation system with unknown constant time delays显示文摘In this paper, a distributed velocity sensor fault diagnosis scheme is presented for a formation of a second-order multi-agent system with unknown constant communication time delays. An existing distributed proportion-derivation(DPD) formation control law is adopted and a delay-independent condition is proposed to guarantee the asymptotical formation stability of the formation system based on the Nyquist stability criterion. Then a distributed fault diagnosis scheme is developed. In each agent, a distributed fault detection residual generator(DFDRG) and a bank of distributed fault isolation residual generators(DFIRGs) are designed based on the closed-loop model of the whole system. Each DFIRG is built up on the basis of a reduced-order unknown input observer(UIO) which is robust to the fault of one neighboring agent. According to the robust relationship between DFIRGs and faults, distributed fault isolation can be achieved. Conditions are presented to guarantee that each agent is able to diagnose faults of itself and its neighbors despite the disturbance of time delays. Finally, outdoor experimental results illustrate the effectiveness of the proposed schemes.Donghua ZHOU Liguo QIN Xiao HE Rui YAN Ruiliang DENG 2018Science China(Information Sciences)2018,61,11:5
4Spatiotemporal pattern of urban forest leaf area index in response to rapid urbanization and urban greening显示文摘Rapid urbanization and urban greening have caused great changes to urban forests in China. Understanding spatiotemporal patterns of urban forest leaf area index(LAI) under rapid urbanization and urban greening is important for urban forest planning and management. We evaluated the potential for estimating urban forest LAI spatiotemporally by using Landsat TM imagery. We collected three scenes of Landsat TM(thematic mapper)images acquired in 1997, 2004 and 2010 and conducted a field survey to collect urban forest LAI. Finally, spatiotemporal maps of the urban forest LAI were created using a NDVI-based urban forest LAI predictive model.Our results show that normalized differential vegetation index(NDVI) could be used as a predictor for urban forest LAI similar to natural forests. Both rapid urbanization and urban greening contribute to the changing process of urban forest LAI. The urban forest has changed considerably from 1997 to 2010. Urban vegetated pixels decreased gradually from 1997 to 2010 due to intensive urbanization.Leaf area for the study area was 216.4, 145.2 and173.7 km^2 in the years 1997, 2004 and 2010, respectively.Urban forest LAI decreased sharply from 1997 to 2004 and increased slightly from 2004 to 2010 because of numerous greening policies. The urban forest LAI class distributions were skewed toward low values in 1997 and 2004. Moreover, the LAI presented a decreasing trend from suburban to downtown areas. We demonstrate the usefulness of TM remote-sensing in understanding spatiotemporal changing patterns of urban forest LAI under rapid urbanization and urban greening.Zhibin Ren Yunxia Du Xingyuan He Ruiliang Pu Haifeng Zheng Haide Hu 2018Journal of Forestry Research2018,29,3:4
5The carbon isotopic compositions of Non-methane Hydrocarbons in atmosphere显示文摘Carbon isotopic compositions of atmospheric Non-methane Hydrocarbons(NMHCs) in the urban areas of Taiyuan and Lanzhou in summer were reported and the sources of NMHCs are discussed.Carbon isotopic ratios(δ 13C) of vehicle exhaust,coal-combustion exhaust,fuel volatiles and cooking exhaust were also measured with thermal desorption-gas chromatography-isotope ratio-mass spectrometry(TD-GC-IR-MS).δ 13C values of NMHCs in the urban areas of Lanzhou and Taiyuan range from-32.3‰ to-22.3‰ and from-32.8‰ to-18.1‰.δ 13C values of vehicle exhaust,coal-combustion exhaust,fuel volatiles and cooking exhaust are-32.6‰―-21.7‰,-24.5‰―-22.3‰,-32.5‰―-27.4‰ and-31.6‰―-24.5‰,respectively.The data indicate that vehicle exhaust and cooking exhaust make a significant contribution to the atmospheric NMHCs.Therefore,to reduce emissions of vehicle exhaust and cook-ing exhaust is critical for controlling atmospheric NMHCs pollution in summer.PENG Lin ZHANG HuiMin REN ZhaoFang MU Ling SHI RuiLiang CHANG LiPing LI Fan 2009Chinese Science Bulletin2009,54,8:3
6方向对比度和区域标准差相结合的图像融合显示文摘小波变换的图像融合方法已成为现今研究的一个热点。但几乎所有的算法都是在小波域不同尺度上分别对高频系数和低频系数进行融合,没有考虑到它们之间固有的相关性。为此,提出了一种基于方向对比度和区域标准差最大的融合新算法,主要特点是在低频部分采用加权因子自适应调节参数融合,以减少边缘模糊,对于高频部分采用方向对比度和局部区域窗口标准差最大值作为高频分量,突出对比度和局域细节,实验表明:融合后影像信息量丰富,地物轮廓清晰可辨,对比度大大加强,空间分辨率得到了提高,最大限度保留了原始影像的光谱信息,是一种可行有效的融合方法。林卉 Ruiliang Pu 梁亮 张连蓬 2014计算机工程与应用2014,50,6:3
7Changes in Soil Enzyme Activity and Nutrient Content in Different Years of Continuous Cropping Tobacco Fields显示文摘In order to find out changes in the main fertility indicators of continuous cropping tobacco fields in Henan Province with years of continuous cropping,5 typical tobacco fields( Jia County,Shaoling District,Fangcheng County,Xiangcheng County,and Song County) were studied. Indicators in question included activity of main enzymes( sucrase,urease,catalase,and acid phosphatase),p H value,organic matters,total nitrogen,available phosphorus and available potassium. The results indicate that in most tobacco fields,the activity of sucrase and urease increased in two years of continuous cropping,later,it showed a declining trend with increase in years of continuous cropping; in some fields,it directly declined with increase in years of continuous cropping; the activity of catalase increased in two years of continuous cropping,later,it showed a declining trend with increase in years of continuous cropping,and it became stable after three years of continuous cropping;generally,the activity of acid phosphatase declined with increase in the years of continuous cropping within 3 years continuous cropping,later,it became stable. Except Fangcheng County,the soil p H value of other districts( counties) generally declined with increase in years of continuous cropping,and it was in the range of 5. 6-6. 8. With the increase in continuous cropping,the soil organic matters( SOM) in tobacco fields of Jia County and Song County declined,changes of SOM in tobacco fields of Fangcheng County and Xiangcheng County were not obvious,and SOM showed the trend of first decline then rise in Shaoling District. In most tobacco fields( Jia County,Xiangcheng County,and Song County),the total nitrogen showed a declining trend; in Shaoling District,it showed a trend of first decline then rise; in Fangcheng County,it showed a rising trend. The available phosphorus firstly slightly declined then rose in tobacco fields of Shaoling District and Song County; it showed a trend of first rise then decline in Jia County; there were no obvious changes in Fangcheng County and Xiangcheng County. Changes in the available potassium were different in tobacco fields. In sum,there are certain rules for changes in soil enzyme activity and nutrient content in tobacco fields in Henan Province,but changes are not completely the same. It is concluded that the site conditions and farming activities exert a certain influence on soil enzyme activity,p H value,organic matters,and nitrogen,phosphorus and potassium content. Therefore,to solve obstacles in continuous cropping of tobacco fields,different regions should take different measures.Jifeng CHEN Hui SUN Yang XIA Kaixuan CAI Hongyuan LIU Yuanyuan LI Ruiliang GUO Bei HOU Shuai FENG Xiaoxin JIANG 2017Asian Agricultural Research2017,9,5:2
8Design of bionic goat quadruped robot mechanism and walking gait planning显示文摘In order to improve the walking stability and obstacle jumping ability of the robot on the slope,the goat was taken as the bionic prototype,a kind of bionic goat quadruped robot has been designed.By the bionic principle,the mechanical structure of the quadruped robot was designed,and the Denavit-Hartenberg(D-H)method was used to build the kinematic model,through which the forward and inverse kinematics of the robot was calculated,thus the equations of velocity and acceleration of the joint angle change were obtained during the quadruped robot motion,providing control theory foundation for robots.During walk gait planning,a low contact compact foot trajectory planning method using a high order polynomial curve was used to carry out the foot trajectory planning of the robot for the swing phase and stance phase.Through MATLAB software simulation,the simulation results of MATLAB software showed that the trajectory of the foot of the quadruped robot was semi-elliptic in a gait cycle,which were basically consistent with the foot trajectory obtained from the previous goat slope walking test.Therefore,the simulation results by MATLAB software showed that the foot trajectory was reasonable.Based on this,a gait plan was carried out,and the sequence of the lift leg steps of the robot was obtained.The test platform for the whole machine was built.The results showed that the height of the leg of the quadruped robot was 7.37 cm,and the length of the gait was 28.40 cm.Compared with the planned average gait length S=30 cm and average step height H=7 cm,the error of the leg height and the gait length was 5.28%and 5.33%,respectively.The designed gait planning achieved the expected results.The knee joint angle varied from 126.3°to 156.1°,and the hip joint angle varied from 103.9°to 138.4°.The changes in the joint angle of the quadruped robot could prove the correctness of the foot motion trajectory planning,which will provide a theoretical basis for the structural design and gait planning of the quadruped robot.Fu Zhang Shuai Teng Yafei Wang Zhijun Guo Jiajia Wang Ruiliang Xu 2020International Journal of Agricultural and Biological Engineering2020,13,5:2
9Application of Comprehensive Lightning Interceptor in Highway Toll Station显示文摘Expressway toll station is listed by lightning protection experts as one of the five difficult problems in the field of international lightning protection.So far,the direct lightning protection of the expressway toll station is mainly based on the electrical geometry model-rolling ball method.Lightning rod or lightning belt is installed on the high pole lamp of the toll square and the ceiling of the toll island as a flash catching device to intercept lightning.The lightning rod is a section of metal conductor with the tip.From the process of the connection between up leader generated by the lightning rod and down leader of lightning,the lightning rod has the ability to attract the lightning rod,and can prevent lightning strike of the protected objects within a certain range.From the perspective of lightning protection methods and means,lightning protection plays an interception role against lightning discharge,also called interceptor.A large number of practice has proved that the lightning rod plays an important role in protecting the building structure from lightning damage.With the development of electronic information society,the limitations of lightning rod are more and more prominent,resulting in more and more lightning strike accidents.In 2019,China invented a new flash connection device-lightning interceptor that can overcome the limitations of lightning rod and has applied it on expressways,which has achieved remarkable results.In this paper,the physical parameters of lightning receiving process by the lightning interceptor and the lightning rod are compared,and the solution to prevent direct lightning strike at expressway toll station is proposed.Zaiqiang YANG Yixian QIU Yu HUANG Lingjin KONG Ruiliang CHEN Yan YANG Hui YANG 2022Meteorological and Environmental Research2022,13,5:2
10A review on anthropogenic geomorphology显示文摘With the continuous development of man's ability to reshape naturehuman activities have become the third geomorphologic agent in the modern geomorphological process. Man-made landform is a landform unit characterized by human activities and is a result of synergizing human and nature geomorphologic agents under the physical geographical background. This article provides an overview on the major progresses in research on anthropogenic geomorphology from aspects like the origin of anthropogenic geomorphologyman-made landform agents and classificationman-made landform evolution and its influencing mechanismmap presentation of man-made landformand environmental impact of man-made landforms. In additionin the articlethe future development of anthropogenic geomorphology is forecasted. It is pointed out that future studies on anthropogenic geomorphology should pay more attention to the following directions: construction of discipline system of anthropogenic geomorphologymaterial composition and morphological features of man-made landformsspatial expansion process and development laws of man-made landformsregional disparity and accumulative environmental effects of man-made landformsand environmental management on man-made landforms and comparative analyses of relevant international management policies.LI Jialin YANG Lei PU Ruiliang LIU Yongchao 2017Journal of Geographical Sciences2017,27,1:2
11Ecosystem service valuation of bays in East China Sea and its response to sea reclamation activities显示文摘Ecosystem service values(ESVs)of bays and their response to sea reclamation are of great practical importance for forming bay eco-compensation policy and extension of blue economic space.Based on land use information of bays collected during the period of 1990–2015,the spatiotemporal evolution of ESVs of 12 main bays in East China Sea and their response to sea reclamation activities over the past 25 years were quantitatively analyzed.The analysis results indicate that ESVs of bays in East China Sea showed a continuous downward trend and the whole ecosystem was continuously degraded,in which the degradation degree of ESV in the southern bays was higher than that in the northern bays.Spatial zoning of ESVs of bays in East China Sea was remarkable,showing a continuous downward trend from low-value to high-value zone.Spatial variation of ESVs of each bay was also significant,expanding from a city and from inland to the coast,which suggests that human activities,mainly reclamation,have become main agents for ESV evolution of bays in East China Sea.ESVs of bays have a significant response to sea reclamation,manifested as a significant negative correlation between ESV and reclamation intensity.The correlation in the southern bays was stronger than that in the northern bays,which was caused by different effects of sea reclamation modes on ESV evolution of muddy and bedrock bays.A negative effect of sea reclamation activities on bay ecosystem was hysteretic.Therefore,an attention should be paid to dynamic monitoring and early warning of development status in offshore areas,ecosystem-level reclamation control policy,and coastal wetland reserves planning.Moreover,the spatial coupling mechanism study between bay ecosystem service demand and its service supply capacity should be strengthened to realize systematic regulation of bay ecological security pattern.LIU Ruiqing XU Hao LI Jialin PU Ruiliang SUN Chao CAO Luodan JIANG Yimei TIAN Peng WANG Lijia GONG Hongbo 2020Journal of Geographical Sciences2020,30,7:2
12Diagenetic fluids evolution of Oligocene Huagang Formation sandstone reservoir in the south of Xihu Sag, the East China Sea Shelf Basin: constraints from petrology, mineralogy,and isotope geochemistry显示文摘The Oligocene Huagang Formation is the main sandstone reservoir in the Xihu Sag, situated in the east of the East China Sea Shelf Basin. With an integrated approach of thin-section petrography, ultra-violet fluorescence microscopy, scanning electron microscopy, and isotope geochemistry, the different diagenetic features were identified, the typical diagenetic parasequences were established, and the diagenetic fluids evolution history were reconstructed for the Oligocene Huagang Formation sandstone reservoir in the south of Xihu Sag. The Huagang Formation sandstone reservoir is now in Period B of the mesodiagenesis, which has undergone significant diagenetic alterations such as mechanical compaction, Pore-lining chlorite cement, feldspar dissolution, quartz cementation and dissolution, and carbonate cementation. Three types of carbonate cements(early siderite,medium ferrocalcite and late ankerite) were identified in the Huagang Formation sandstone reservoir. The carbon and oxygen isotopic compositions of carbonate cements show that the early calcite precipitate from alkaline lacustrine environment whereas the late carbonate cements were closely related to the organic acids. To the Huagang Formation sandstone reservoir, it has experienced two main episodes of dissolution during diagenesis.The early dissolution is that unstable components such as feldspar, lithic fragments, and carbonate cement were dissolved by acidic water. The second dissolution is that quartz and other silicate minerals were dissolved under the alkaline condition. Two main phases of hydrocarbon charging occurred in this study area. The first hydrocarbon emplacement was prior to the medium carbonate cementation but posterior to feldspar dissolution and the onset of quartz cementation at the end of the Miocene. The second hydrocarbon charging occurred in the Quaternary period after the late carbonate precipitation.HAO Lewei WANG Qi GUO Ruiliang TUO Chengrong MA Dongxu MOU Weiwei TIAN Bing 2018Acta Oceanologica Sinica2018,37,2:2
13Retail services and firm profit in a dual-channel market显示文摘Ruiliang Yan Zhi Pei 2009Journal of Retailing and Consumer Services2009,,4:2
14Mapping and assessing of urban impervious areas using multiple endmember spectral mixture analysis: A case study in the city of Tampa, Florida显示文摘Weng Fenqing Pu Ruiliang 2013Geocarto International2013,28,7:1
15Retail services and firm profit in a dual-channel market显示文摘Ruiliang Yan Zhi Pei 2009Journal of Retailing and Consumer Services2009,,4:1
16Retail services and firm profit in a dual- channel market 显示文摘Yan Ruiliang Pei Zhi 2009Journal of Retailing and Consumer Services2009,16,1:1
17Spectral mixture analysis for mapping abundance of urban surface components from the Terra/ASTER data显示文摘Ruiliang Pu Peng Gong Ryo Michishita Todashi Sasagawa 2007Remote Sensing of Environment2007,,3:1
18Defense against primary user emulation attacks in cognitive radio networks显示文摘Chen Ruiliang Park J Reed J 2008IEEE Journal Se- lected Areas in Communications2008,26,:1
19Estima tion of forest leaf area index using vegetation indices derives from hyperion hyperspeetral data 显示文摘PENG GONG RUILIANG PU BIGING G S 2003IEEE Transactions on Geoscience and Remote Sensing2003,41,6:1
20ADAPTIVE ELLIPSOIDAL ACOUSTIC INFINITE ELEMENT显示文摘It is shown that the basis of the ellipsoidal acoustic infinite element Burnett method,the multipole expansion,cannot represent real ellipsoidal acoustic field exactly.To solve the problem,a weight of angular direction is added to the multipole expansion.The comparison of the modified method and the prime method shows that the modified method can describe and solve the ellipsoidal acoustic field more accurately than ever.A dilating sphere is used to test the new method further.Unlike other infinite element methods,varied ratio of the ellipsoidal artificial boundary instead of sphere is used.The pressure value of the artificial boundary is utilized as the initial value of the new method.Then the radiating phenomena of the ellipsoidal acoustic field can be researched using the new method.These examples show the feasibility of the adaptive method.Yang Ruiliang Wang Hongzhen State Key Laboratory of Vibration,Shock & Noise,Shanghai Jiaotong University,Shanghai 200030, China 2004Chinese Journal of Mechanical Engineering2004,17,2:1
返回顶部 每页显示:
共7页 首页 上一页 第1页 下一页 末页 /7 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