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| 1 | Cropland cover change in Northeast China during the past 300 years显示文摘Land use/cover change induced by human activities has emerged as a 'global' phenomenon with Earth system consequences. Northeast China is an area where the largest land cultivation activities by migrants have happened in China during the past 300 years. In this paper, methods including documentary data calibration and multi-sourced data conversion model are used to reconstruct historical cropland cover change in Northeast China during the past 300 years. It is concluded that human beings have remarkably changed the natural landscape of the region by land cultivation in the past 300 years. Cropland area has increased almost exponentially during the past 300 years, especially during the past 100 years when the ratio of cropland cover changed from 10% to 20%. Until the middle of the 19th century, the agricultural area was still mainly restricted in Liaoning Province. From the late 19th century to the early 20th century, dramatic changes took place when the northern boundary of cultivation had extended to the middle of Heilongjiang Province. During the 20th century, three agricultural regions with high ratio of cropland cover were formed after the two phases of spatial expansion of cropland area in 1900s—1930s and 1950s—1980s. Since 1930s—1940s, the expansion of new cultivated area have invaded the forest lands especially in Jilin and Heilongjiang Provinces. | YE Yu FANG XiuQi REN YuYu ZHANG XueZhen CHEN Li | 2009 | Science China Earth Sciences2009,52,8: | 21 |
| 2 | Global land-surface air temperature change based on the new CMA GLSAT data set显示文摘The China Meteorological Administration(CMA)has recently developed a new global monthly homogenized land-surface air temperature data set.Based on this data set,we reanalyzed the change in global annual mean land-surface air temperature(LSAT)during three time periods(1901–2014,1979–2014 and 1998–2014).The results show that the linear trends of global annual mean LSAT were 0.104°C/decade,0.247°C/decade and 0.098°C/decade for the three periods,respectively.The trends were statistically significant except for the period 1998–2014,the period that | Xiubao Sun Guoyu Ren Wenhui Xu Qingxiang Li Yuyu Ren | 2017 | Science Bulletin2017,62,4: | 10 |
| 3 | Changes of crop climate risk degree:a case study on cotton in Henan Province显示文摘The agricultural climate risk in the geographical transitional zones is very sensitive to climate change. Based on previous researches, this article established the cotton climate suitability model and the risk index to analyze the cotton climate risk degree in Henan Province. The result shows that, in the last 40 years, the cotton climate risk degree has a gradual increasing trend in which the precipitation plays a very important role, and the climate suitability and its deviation have different performances in the influence on the risk change in different phases; the increase rate of risk degree has significant regional and transitional characteristics, for example, from the eastern plain to the western mountains, the risk change rate becomes slower and slower, so the contrast between the central-southern Huang-Huai plain and the Funiu mountains is the most remarkable; and in the north-south direction, the contrast between the fast increase belt from the central-southern Huang-Huai plain to the middle Yellow River and the slow increase belt near the Yellow River is particularly remarkable, which is possibly the results of topographic and climatic transitional belt; and the risk change process also has obvious regional difference. For instance, abrupt change is an important characteristic in eastern Henan where this sudden change type has notable latitudinal difference, while in the western mountainous area it is very rare. Although the temperature change over the 40 years is still increasing in this area, the trend has reduced gradually since the end of the 1980s. | QIAN Huaisui REN Yuyu LI Mingxia | 2006 | Journal of Geographical Sciences2006,16,3: | 2 |
| 4 | Warm dense matter research at HIAF显示文摘The research activities on warm dense matter driven by intense heavy ion beams at the new project High Intensity heavy-ion AcceleratorFacility (HIAF) are presented. The ion beam parameters and the simulated accessible state of matter at HIAF are introduced, respectively. Theprogresses of the developed diagnostics for warm dense matter research including high energy electron radiography, multiple-channel pyrometer,in-situ energy loss and charge state of ion detector are briefly introduced. | Rui Cheng Yu Lei Xianming Zhou Yuyu Wang Yanhong Chen Yongtao Zhao Jieru Ren Lina Sheng Jiancheng Yang Zimin Zhang Yingchao Du Wei Gai Xinwen Ma Guoqing Xiao | 2018 | Matter and Radiation at Extremes2018,3,2: | 2 |
| 5 | An evaluation of representativeness of different observational networks for monitoring precipitation variability in mainland China显示文摘 | Ren Yuyu Ren Guoyu | 2012 | Acta Meteorologica Sinica2012,26,4: | 1 |
| 6 | High energy density physics research at IMP,Lanzhou, China显示文摘Recent research activities relevant to high energy density physics(HEDP) driven by the heavy ion beam at the Institute of Modern Physics, Chinese Academy of Sciences are presented. Radiography of static objects with the fast extracted high energy carbon ion beam from the Cooling Storage Ring is discussed. Investigation of the low energy heavy ion beam and plasma interaction is reported. With HEDP research as one of the main goals, the project HIAF(High Intensity heavy-ion Accelerator Facility), proposed by the Institute of Modern Physics as the 12 th five-year-plan of China, is introduced. | Yongtao Zhao Rui Cheng Yuyu Wang Xianming Zhou Yu Lei Yuanbo Sun Ge Xu Jieru Ren Lina Sheng Zimin Zhang Guoqing Xiao | 2014 | High Power Laser Science and Engineering2014,2,4: | 1 |
| 7 | Winter temperature extremes in China and their possible causes显示文摘 | Qinglong You Guoyu Ren Klaus Fraedrich Shichang Kang Yuyu Ren Pengling Wang | 2012 | Climatol2012,,6: | 1 |
| 8 | Trends in heavy ion interaction with plasma显示文摘 | Yongtao Zhao Zhanghu Hu Rui Cheng Yuyu Wang Haibo Peng Alexander Golubev Xiaoan Zhang Xia Lu Dacheng Zhang Xianming Zhou Xing Wang Ge Xu Jieru Ren Yongfeng Li Yu Lei Yuanbo Sun Jiangtao Zhao Tieshan Wang Younian Wang Guoqing Xiao | 2012 | Laser and Particle Beams2012,,: | 1 |
| 9 | A slippery hydrogel coating with durable oil-repellent property and self-regeneration capacity显示文摘Traditional lubricant impregnated surfaces usually required fluorinated lubricants to achieve slippery oil repellency, but the lubricants infused were expensive and toxic and also suffered from limited stability because of their migrating, evaporating, and leaking during use. Herein, to address this issue, we fabricated a durably fluorine-free slippery oil-repellent hydrogel coating using water as the lubricant. Due to its enhanced water-binding affinity, water could wet the hydrogel completely and form a hydrated-water layer on the surface. The hydrated water layer could act as a lubricant to repel foreign oils, which allowed the hydrogel to display slippery oil-repellency in air, exhibit superoleophobicity underwater, and resist oil fouling upon oil immersion.The hydrogel kept its oil-repellent properties after mechanical tests as well as thermal and freezing treatments,demonstrating its durability. Thanks to its moisture absorption, the water lubricant layer could self-regenerate upon the lubricated water layer depletion through exposure to a humid environment. Exploiting it is water-attracting and oil repellency, the hydrogel coating was demonstrated as a versatile platform for oil/water separation, polymer/water separation, drag-reduction, and antifogging. | XU Ting GAO ZhongShuai LI FangChao MIAO Gan JIA YuYu MIAO Xiao ZHU XiaoTao LU JingWei WANG Bo SONG YuanMing REN GuiNa LI XiangMing | 2022 | Science China(Technological Sciences)2022,65,8: | 0 |
| 10 | Isolation and Identification of Highly Pathogenic PRRSV from a Pig Farm显示文摘[Objective] To identify suspected cases of highly pathogenic PRRSV from a pig farm. [Method] The suspected cases of highly pathogenic PRRSV were conducted pathologic anatomy, the gene of PRRSV N protein was amplified by RT-PCR and its sequences were determined and analyzed. [Result] The nucleotide sequence of N protein of N7/N8 isolate shared the consistency of 97.0% with highly pathogenic strains(JXA1, Hu N4, SX-1 and TJ), and that of isolate N9 shared the consistency of 97.3% with highly pathogenic strains, indicating the infected virus in the pig farm was highly pathogenic PRRSV. [Conclusion] This research provides a reference for the diagnosis of highly pathogenic PRRSV infec-tion in swine production. | Ren Sufang Guo Lihui Gao Shuxia Zhang Zhaokun Liu Junzhen Wu Jiaqiang Zhang Yuyu | 2018 | Animal Husbandry and Feed Science2018,10,3: | 0 |
| 11 | 4-15 Energy Deposition and Excitation of Wake eld in Case of 100 keV/u Ion Beam Passing through a Plasma Target显示文摘Recently our team investigated the energy deposition and excitation of wakefield in case of hundreds keV proton/helium ion beams passing a gas-discharged plasma target. The plasma target was produced by igniting an electric discharge of hydrogen gas in two-collinear quartz tubes, each of 5 mm in diameter and 78 mm in length, the electrical current even up to kA will flow in two opposite directions in either of the two quartz tubes. | Zhao Yongtao Cheng Rui Zhou Xianming Wang Yuyu Lei Yu Liu Shidong Peng Haibo Deng Jiachuan Xu Ge Ren Jieru R. Gavrilin A. Golubev D. Hoffmann Xiao Guoqing | 2015 | IMP & HIRFL Annual Report2015,,1: | 0 |
| 12 | 4-16 High Energy Density Research at the Future Project HIAF in China显示文摘A large scale scienti c research platform, named the High Intensity heavy-ion Accelerator Facility (HIAF), was proposed in light of the trend and development in nuclear physics and the associated high energy heavy ion research elds. HIAF is one of the 16 approved national projects for basic sciences and technologies as the 12th ve-year-plan in China; it will be a laboratory open to the outside world, similar to CSR which was built as the 9th ve-year-plan in China[1]. | Cheng Rui Zhao Yongtao Wang Yuyu Zhou Xianming Lei Yu Sun Yuanbo Xu Ge Ren Jieru Xiao Guoqing | 2015 | IMP & HIRFL Annual Report2015,,1: | 0 |
| 13 | 4-17 Investigations on Interaction between Low Energy Heavy Ion Beams and Hydrogen Plasma显示文摘The interaction between ion beam and matter is one of the most important topics in atomic physics and nuclear physics. It is indeed a requirement for a deeper understanding of the interaction processes. Especially the energy deposition by an intense heavy ion beam with the low energy impinging into a degenerate matter, which is related to the topics of warm dense matter, fast ignition process and helium ions self-heating in the fusion process. | Cheng Rui Zhou Xianming Wang Yuyu Lei Yu Sun Yuanbo Ren Jieru Ma Xinwen Xiao Guoqing Zhao Yongtao I. Roudskoy A. Golubev D.H.H.Hoffmann | 2015 | IMP & HIRFL Annual Report2015,,1: | 0 |
| 14 | 4-19 X-ray Emission for 424 MeV/u C Ions Impact Selected Targets显示文摘In inertial Confinement Fusion (ICF), X-ray radiation drives the implosion requiring not only sufficient conversion efficiency of the drive energy to the X-ray but also the highly spatial symmetry. Consequently, it is important to investigate the X-ray radiation in the interaction of high energy heavy ions beam with solid target. In this work,we investigate the X-ray emission induced by high energy heavy ions. | Zhou Xianming Chen Rui Wang Yuyu Lei Yu Ren Jieru Liu Shidong Zhao Yongtao | 2015 | IMP & HIRFL Annual Report2015,,1: | 0 |
| 15 | 4-21 Numerical Simulation of Intense Heavy Ion-target Interaction显示文摘High power laser facility has been widely used for the high energy density physics (HEDP) research for years. Recently, the development of intense heavy ion beam accelerators opened a new way for heavy ion-driven HEDP research. Due to the special energy deposition mechanism of heavy ion beams, large volume of uniform high energy density matter could be obtained for fundamental physical research such as equation of state study. | Ren Jieru Zhao Yongtao Naeem Tahir Cheng Rui Lei yu Wang Yuyu Xiao Guoqing | 2015 | IMP & HIRFL Annual Report2015,,1: | 0 |
| 16 | 4-22 Development and Test of an Ultrafast eight-channel Pyrometer for Temperature Diagnostics of High-energy-density Matter显示文摘A study of the fundamental properties of high-energy-density (HED) matter is of considerable important as it has wide application to various branches of the basic and applied science. The study will enable one to probe the validity of existing theories on stellar formation and evolution, compressibility of inertial fusion targets and check the correctness of existing models for strongly coupled high density plasma[1;2]. | Lei Yu Zhao Yongtao Cheng Rui Zhou Xianming Sun Yuanbo Wang Yuyu Ren Jieru Zhang Min | 2015 | IMP & HIRFL Annual Report2015,,1: | 0 |
| 17 | Characteristic X-ray Xe Ions in Collisions near Emission from highly Charged Bohr Velocity: Z2 Dependence显示文摘 | Lei Yu Zhao Yongtao Cheng Rui Zhou Xianming Sun Yuanbo Wang Yuyu Wang Xing Xu Ge Ren Jieru Li Yongfeng Yu Yang Xiao Guoqing | 2011 | IMP & HIRFL Annual Report2011,,1: | 0 |
| 18 | Charge State Effect in Collision of Xeq+ with Fe Target显示文摘 | Ren Jieru Zhao Yongtao Zhou Xianming Cheng Rui Lei Yu Sun Yuanbo Wang Yuyu Wang Xing Xu Ge Li Yongfeng Yu Yang Xiao Guoqing | 2011 | IMP & HIRFL Annual Report2011,,1: | 0 |
| 19 | 4fσ-4fπ Coupling in Highly Charged Ion Collision near Bohr Velocity显示文摘 | Ren Jieru Zhao Yongtao Zhou Xianming Cheng Rui Lei yu Sun Yuanbo Wang Yuyu Wang Xing Xu Ge Li Yongfeng Yu Yang Xiao Guoqing | 2011 | IMP & HIRFL Annual Report2011,,1: | 0 |
| 20 | Electron Emission and Surface Nanostructure Formation by Xe and Ar Ions on Different Surfaces显示文摘 | Wang Yuyu Zhao Yongtao Cheng Rui Ren Jieru Yu Yang Zhou Xianming Lei Yu Wang Xing Li Yongfeng Xiao Guoqing | 2011 | IMP & HIRFL Annual Report2011,,1: | 0 |