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| 1 | Chaos in the sense of Li-Yorke and the order of the inverse limit space显示文摘Let l=[0,1] and ω0 be the first limit ordinal number. Assume that f:l→l is continuous, piece-wise monotone and the set of periods of f is {2i: i∈{0}∪N}. It is known that the order of (l, f) is ω0 or ω0 + 1. It is shown that the order of the inverse limit space (l, f) is ω0 (resp. ω0 + 1) if and only if f is not (resp. is) chaotic in the sense of Li-Yorke. | Jie Lü Xiangdong Ye | 1999 | Chinese Science Bulletin1999，44，11： | 0 |
| 2 | Quantifying the effects of contact duration,loading rate,and approach velocity on P-selectinPSGL-1 interactions using AFM显示文摘 | LüSQ Ye ZZ Zhu C | 2006 | Polymer2006，47，： | 1 |
| 3 | Ultrasonicallypromoted nitrolysis of DAPT to HMX in ionic liquid显示文摘 | QIAN Hua YE Zhi-Wen LüChun-xu | 2008 | Ultrasonics Sonochemistry2008，15，4： | 1 |
| 4 | Synthesis ofCL-20by clean nitrating agent dinitrogen pentoxide显示文摘 | QIAN Hua LüChun-xu YE Zhi-wen | 2008 | Journal of the Indian Chemical Society2008，85，4： | 1 |
| 5 | Millet noodles in Late Neolithic China显示文摘 | Lü Houyuan Yang Xiaoyan Ye Maolin | | 0，，： | 1 |
| 6 | A personal route prediction system based on trajectory data mining显示文摘 | Chen L LüM Ye Q | 2011 | Information Sciences2011，181，7： | 1 |
| 7 | ON THE NUMBER OF INCREASING PATHS IN LABELED CYCLES AND STARS显示文摘一张标记的图是订的对(G, L ) 由图 G 和它的标记的 L 组成:V (G) 鈫 ?{ 1, 2,鈥?n } ,在此 n =| V (G)| 。在一张标记的图的一条增加的 nonconsecutive 路径(G, L ) 任何一个是一条路径(u 1, u 2,鈥?u k )(k 鈮 ? 2 ) 在 G 以便 L (u i )+ 为所有 i = 的 2 鈮 ? L (u i+1 ) 1, 2,鈥?k?1 或顺序 1 的一条路径。增加 nonconsecutive 路径在的全部的数字(G, L ) 被 d 表示(G, L ) 。如果标记的 L 生产最大的 d,标记的 L 是最佳的(G, L ) 。在这份报纸,在 Zverovich (2004 ) 的比那简单的一个方法被给获得路径的最佳的标记。象周期和星那样的另外的特殊的图的最佳的标记被获得。 | Chen Lei Lü Changhong Ye Yongsheng | 2007 | Applied Mathematics(A Journal of Chinese Universities)2007，22，1： | 0 |
| 8 | Quantification and timing of porosity evolution in tight sand gas reservoirs:an example from the Middle Jurassic Shaximiao Formation,western Sichuan,China显示文摘The diagenesis and porosity evolution of the Middle Jurassic Shaximiao sandstones were analyzed based on petrographic observations.X-ray diffractometry.scanning electron microscopy observations,carbon and oxygen stable isotope geochemistry,fluid inclusion microthermometry,and thermal and burial history modeling results.The point count data show that secondary pores(av.5.5%) are more abundant than primary pores(av.3.7%) and are thus the dominant pore type in the Shaximiao sandstones.Analysis of porosity evolution indicates that alteration of sandstones mainly occurred during two paragenetic stages.Mechanical compaction and cementation by early chlorite,calcite,and quartz typically decrease the depositional porosity(40.9%) by an average of37.2%,leaving porosity of 3.7%after stage Ⅰ(<85 ℃,175-145 Ma).The original intergranular porosity loss due to compaction is calculated to be 29.3%,suggesting that mechanical compaction is the most significant diagenetic process in primary porosity destruction.Stage Ⅱ can be further divided into two sub-stages(Stage Ⅱ_a and StageⅡ_b).Stage Ⅱ_a(85-120 ℃,145-125 Ma) is characterized by late dissolution,which enhanced porosity by 8.8%,and the porosity increased from 3.7%to 12.5%.During stageⅡ_b(>120 ℃,125-0 Ma),the precipitation of late chlorite,calcite,quartz,and kaolinite destroyed 3.3%porosity,leaving porosity of 9.2%in the rock today. | Zheng-Xiang Lü Su-Juan Ye Xiang Yang Rong Li Yuan-Hua Qing | 2015 | Petroleum Science2015，12，2： | 13 |
| 9 | Ecological pressures on grassland ecosystems and their conservation strategies in Northern China显示文摘In this study,we identified ecological pressures on grassland ecosystems and adaptive countermeasures in Northern China.Our research revealed that the main sources of these pressures included population growth,economic development,resources exploitation,and global climate change,with human-related activities being overriding factors.Overgrazing was an important reason for grassland imbalance,causing soil erosion and desertification,especially during the sensitive spring greening phase.In steppe zones,commercial coal mining was destructive to the ecological environment.Regarding long-term strategies,we recommend that policy-makers devote more consideration to a new conceptual approach for transforming grasslands through shifting the focus from die grassland's traditional production functions to meir ecological functions.Applying this concept,adaptive countermeasures should be developed to reduce human impacts based on the environmental capacities of grasslands.Moreover,we recommend the development of environment-friendly industries and reduction of pressures from human activities as effective measures for maintaining the balance between sustainable economic development and grassland conservation.Lastly,we suggest that restoration of degraded grasslands should conform to the principle of natural vegetation to further improve the ecological adaptability of plants and ecosystem stability.This study is expected to provide scientific support for policy-makers engaged in grassland protection. | Zhirong Zheng Chaoyang Feng Shengxing Ye Zhaoyan Diao Shihai Lü | 2015 | Chinese Journal of Population,Resources and Environment2015，13，1： | 4 |
| 10 | Influence of advection on the characteristics of turbulence over uneven surface in the oasis and the Gobi Desert显示文摘Utilizing experimental data of the atmospheric surface layer in the Gobi Oasis of Jinta in a comparative study, we demonstrate that under the condition of unstable stratification, the normalization variances of temperature in the oasis and Gobi Desert meet 1/3(z/Λ)(z/Λ)while normalization variances of both humidity and CO2 in the oasis meet(z)sz\Λ-1/3;s s z Λ the normalization variance of temperature in the oasis is large due to disturbance by advection, whereas variance of CO2 in the Gobi Desert has certain degree of deviation relative to Monin-Obukhov(M-O) scaling, and humidity variance completely deviates from variance M-O scaling. The above result indicates that under the condition of advection, humidity variance meets the relationsm sA sB D and it is determined by relative magnitude of scalar variance of advection transport. Our study reveals that, if the scalar variance of humidity or CO2 transported by advection is much larger than local scalar variance, observation value of scalar variance will deviate from M-O scaling; when scalar variance of advection transport is close to or less than local scalar variance, the observation value of scalar variance approximately meets M-O scaling. | CHEN JinBei HU YinQiao Lü ShiHua YU Ye | 2014 | Science China Earth Sciences2014，57，9： | 3 |
| 11 | The sedimentological characteristics of microbialites of the Cambrian in the vicinity of Beijing,China显示文摘With oil and gas exploration transferring to deeper and more ancient marine strata,more researches have been conducted about the Meso—Neoproterozoic and Cambrian microbial carbonate rocks by petroleum geologists.The Cambrian deposits experienced the first transgression of the Paleozoic,with shallow marine facies depositing in most areas,which are favorable for different kinds of biological reproduction.The Lower Cambrian in Beijing area is lithologically dominated by purple red shales interbedded with limestones,the Middle Cambrian is mainly composed of thick oolitic limestones,and the Upper Cambrian consists of thin limestones and flat-pebble conglomerates.Two beds of microbial carbonate rocks were discovered in the Cambrian outcrops in the vicinity of Beijing.One is from the Zhangxia Formation of Middle Cambrian,and the other is from the Gushan Formation of Upper Cambrian.The microbialites are characterized by combination of multiple stromatolites forming different bioherms.The bioherms are mostly in oval shape and with different sizes,which are 3-4 m long,and 1-3 m high.The surrounding strata beneath the bioherms are oolitic limestones.A central core of flat-pebble conglomerates occurred within each bioherm.Wavy or columnar stromatolites grow on the basis of flat-pebble conglomerates,with dentate erosional surfaces.The bioherm carbonate rocks are interpreted as products from a deep ramp sedimentary environment where potential oil and gas reservoirs can be found.The analysis of sedimentological characteristics of bioherm carbonate rocks and its lithofacies palaeogeography has significant implication for petroleum exploration.Research on geological record of microbialites is beneficial to investigating the Earth evolution,biodiversity,palaeoenvironment and palaeoclimate change,as well as biological extinction event during geological transitions.It also gives warning to human beings of modern biological crisis. | Yin- Ye Wu Tian-Shu Zhang Jia-Lei Lü Yan Liu | 2017 | Journal of Palaeogeography2017，6，2： | 3 |
| 12 | Recursive formulations for the method of reverberation-ray matrix and the application显示文摘A recursive formulation is proposed for the method of reverberation-ray matrix (MRRM) to exactly analyze the free vibration of a multi-span continuous rectangular Kirchhoff plate, which has two oppo- site simply-supported edges. In contrast to the traditional MRRM, numerical stability is achieved by using the present new formulation for high-order frequencies or/and for plates with large span-to-width ratios. The heavy computational cost of storage and memory are also cut down. An improved recursive formulation is further proposed by modifying the iterative formula to reduce the matrix inversion op- erations. Numerical examples are finally given to demonstrate the effectiveness and efficiency of the proposed recursive formulae. | ZHU Jun CHEN WeiQiu YE GuiRu Lü ChaoFeng | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，2： | 3 |
| 13 | Phenolic compounds and antioxidant capacities of bayberry juices显示文摘 | Zhongxiang Fang Yuhuan Zhang Yuan Lü Guangpeng Ma Jianchu Chen Donghong Liu Xingqian Ye | 2008 | Food Chemistry2008，，4： | 2 |
| 14 | An efficient and facile synthesis of HNIW 显示文摘 | Qian Hua Ye Zhi Wen Lü Chun Xu | 2007 | Letters in Organic Chemistry2007，，4： | 1 |
| 15 | Study of grass carp(Ctenopharyngodon idellus) quality predictive model based on electronic nose显示文摘 | Hui Guohua Wang lüye Mo Yanhong | 2012 | Sensors and Actuators B2012，166，35： | 1 |
| 16 | Proportional change of CD4 + CD25 + regulatory T cells in decidua and peripheral blood in unexplained recurrent spontaneous abortion patients显示文摘 | Hui Yang Lihua Qiu Guangjie Chen Zi Ye Caijun Lü Qide Lin | 2008 | Fertility and Sterility2008，，3： | 1 |
| 17 | A ground spectral model for estimating biomass at the peak of the growing season in Hulunbeier grassland, Inner Mongolia, China显示文摘 | Ji-Xi Gao Yan-Mei Chen Shi-Hai Lü Chao-Yang Feng Xue-Li Chang Sheng-Xing Ye Ji-Dong Liu | 2012 | International Journal of Remote Sensing2012，，13： | 1 |
| 18 | The effect of alkaline metal chlorides on the properties of organic light-emitting diodes显示文摘 | Zhaoyue Lü Yongsheng Wang Ye Zou Hailiang Du Zheng Chen Zhenbo Deng | 2009 | Journal of Luminescence2009，，3： | 1 |
| 19 | 查看详情显示文摘 | Ye W Zhang Z Lü B Di Z Hu G | | 0，，： | 1 |
| 20 | Impregnation and consolidation in composites made of GF/PP powder impregnated bundles显示文摘 | Ye L Klinkmüller V Friedrich K | 1992 | Journal of Thermoplastic Composite Materials1992，5，1： | 1 |
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