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| 1 | Fuzzy Comprehensive Evaluation Model for Water Resources Carrying Capacity in Tarim River Basin,Xinjiang,China显示文摘This paper explores the method of comprehensive evaluation of water resources carrying capacity and sets up an evaluation model applying the fuzzy comprehensive evaluation method. Based on the data of nature,society,economics and water resources of the Tarim River Basin in 2002,we evaluated the water resources carrying capacity of the basin by means of the model. The results show that the comprehensive grades are 0.438 and 0.454 for Aksu and Kashi prefectures respectively,where the current water resources exploitation and utilization has reached a relative high degree and there is only a very limited water carrying capacity,0.620 for Kizilsu Kirgiz Autonomous Prefecture,where water resources carrying capacity is much higher,and in between for Hotan Prefecture and Bayingolin Mongo-lian Autonomous Prefecture. As a whole,the comprehensive grade of the Tarim River Basin is 0.508 and the current water resources exploitation and utilization has reached a relative high degree. Thus,we suggest that the integrated management of the water resources in the basin should be strengthened in order to utilize water resources scientifically and sustainably. | MENG Lihong CHEN Yaning LI Weihong ZHAO Ruifeng | 2009 | Chinese Geographical Science2009,19,1: | 55 |
| 2 | Viral effector protein manipulates host hormone signaling to attract insect vectors显示文摘 | Dewei Wu Tiancong Qi Wan-Xiang Li Haixia Tian Hua Gao Jiaojiao Wang Jin Ge Ruifeng Yao Chunmei Ren Xian-Bing Wang Yule Liu Le Kang Shou-Wei Ding Daoxin Xie | 2017 | Cell Research2017,27,3: | 20 |
| 3 | Spatial patterns of ephemeral plants in Gurbantünggüt Desert显示文摘In the present research,the authors measured parameters of richness,cover and importance value of ephemeral and ephemeroid plants on south-north and east-west transects in the Gurbantünggüt Desert in early spring,and investigated and analyzed the microhabitats,such as terrain,geomorphology,soil physical-chemical properties and crusts. By comparison,the regional differences in the ephemeral distribution in the desert were revealed. The species of ephemeral plants in the south and center are the richest and those in the west are the poorest in the desert. The cover of ephemeral plants in the mid-south is higher than that in the north,and that in the mid-east is higher than that in the west. The response of ephemeral plants to the spatial variation of the desert habitat forms the population-habitat gradient of ephemeral plants. The characteristics are:(1) In the habitat with higher terrain,coarser textured soil with poorer sorting and correspondingly higher organic matter and lower alkali-saline contents,Carex physoides and Eremopyrum orientale are the dominant ephemeral plants;(2) In the dry habitat with lower terrain,looser textured soil,some organic matter,alkali-saline soil,and developed crust,the ephemeral plants Alyssum linifolium and Erodium oxyrrhynchum are of characteristic of drought and alkali-saline tolerance;(3) In the habitat with lower terrain,some water and more alkali-saline soil,the ephemeral plants Neotorularia torulosa and Hypecoum parviflorum being of alkali-saline tolerance are mainly developed. However,most ephemerals are distributed in a habitat order of higher terrain,some organic,and less alkali-saline soil on the above-mentioned ephemeral population-habitat gradient. The spatial gradient of variation in desert microhabitats is small,and as a whole,the physio-logical character of mesophytism is represented by the desert ephemerals. | QIAN YiBing WU ZhaoNing ZHANG LiYun ZHAO RuiFeng WANG XiaoYan LI YouMin | 2007 | Chinese Science Bulletin2007,52,22: | 16 |
| 4 | Slip rate along the Lijiang-Ninglang fault zone estimated from repeating microearthquakes显示文摘Seismicity 并且沿着在 1999 和 2006 之间的 Lijiang-Ninglang 差错地区滑动率被调查,波形数据由云南数字地震网络记录了。由双差别方法的重定位的 seismicity 清楚地展出在北、南部的片断之间的不同特征。超过 76% 地震在丽江区域附近发生在差错的南部的片断。重定位的 seismicity 看起来反映学习区域的外壳的速度结构。用跨关联的分析,我们识别了显示出高波形类似的 92 件马甲和 70 根多重谱线的一个总数。大多数这些序列是非周期的,复发间隔从一些分钟变化到几百天。用在学习时期上定期发生了的二个序列,我们获得了一个差错在 ∼23 km 滑动约 5 mm/a 的率,在对的好同意地质并且表面 GPS 测量。 | LI Le CHEN QiFu NIU FengLin FU Hong LIU RuiFeng HOU YanYan | 2009 | Chinese Science Bulletin2009,54,3: | 16 |
| 5 | Effects of soil water and nitrogen availability on photosynthesis and water use efficiency of Robinia pseudoacacia seedlings显示文摘The efficient use of water and nitrogen (N) to promote growth and increase yield of fruit trees and crops is well studied.However,little is known about their effects on woody plants growing in arid and semiarid areas with limited water and N availability.To examine the effects of water and N supply on early growth and water use efficiency (WUE) of trees on dry soils,one-year-old seedlings of Robinia pseudoacacia were exposed to three soil water contents (non-limiting,medium drought,and severe drought) as well as to low and high N levels,for four months.Photosynthetic parameters,leaf instantaneous WUE (WUEi) and whole tree WUE (WUEb) were determined.Results showed that,independent of N levels,increasing soil water content enhanced the tree transpiration rate (Tr),stomatal conductance (Gs),intercellular CO2 concentration (Ci),maximum net assimilation rate (Amax),apparent quantum yield (AQY),the range of photosynthetically active radiation (PAR) due to both reduced light compensation point and enhanced light saturation point,and dark respiration rate (Rd),resulting in a higher net photosynthetic rate (Pn) and a significantly increased whole tree biomass.Consequently,WUEi and WUEb were reduced at low N,whereas WUE i was enhanced at high N levels.Irrespective of soil water availability,N supply enhanced Pn in association with an increase of Gs and Ci and a decrease of the stomatal limitation value (Ls),while Tr remained unchanged.Biomass and WUEi increased under non-limiting water conditions and medium drought,as well as WUEb under all water conditions;but under severe drought,WUEi and biomass were not affected by N application.In conclusion,increasing soil water availability improves photosynthetic capacity and biomass accumulation under low and high N levels,but its effects on WUE vary with soil N levels.N supply increased Pn and WUE,but under severe drought,N supply did not enhance WUEi and biomass. | Xiping Liu Yangyang Fan Junxia Long Ruifeng Wei Roger Kjelgren Chunmei Gong Jun Zhao | 2013 | Journal of Environmental Sciences2013,25,3: | 15 |
| 6 | ShHTL7 is a non-canonical receptor for strigolactones in root parasitic weeds显示文摘 | Yao, Ruifeng Wang, Fei Ming, Zhenhua Du, Xiaoxi Chen, Li Wang, Yupei Zhang, Wenhao Deng, Haiteng Xie, Daoxin | 2017 | Cell Research2017,27,6: | 15 |
| 7 | Cyclooxygenase-2 and epithelial growth factor receptor up-regulation during progression of Barrett's esophagus to adenocarcinoma显示文摘瞄准:在整个 Barretts 食管的前进调查 cyclooxygenase-2 (COX-2 ) 和上皮的生长因素受体(EGFR ) 的表示() 。方法:COX-2 和 EGFR 蛋白质表情被使用免疫检测组织化学的方法。详细 cytomorphological 改变的 A 是坚定的。COX-2 和 EGFR 表示的区域被使用计算机成像系统确定。结果:COX-2 和 EGFR 的表情与前进一起增加了从到食管腺癌(EAC ) 。积极关联在 COX-2 表示和 EGFR 表示之间被发现。结论:COX-2 和 EGFR 可能在逐步的前进从是合作的到 EAC,从而导致致癌作用。 | Yan Li John M Wo Mukunda B Ray Whitney Jones Ruifeng R Su Susan Ellis Robert C G Martin | 2006 | World Journal of Gastroenterology2006,12,6: | 14 |
| 8 | Space Debris Reentry Analysis Methods and Tools显示文摘The reentry of uncontrolled spacecraft may be broken into many pieces of debris at an altitude in the range of 75-85 km. The surviving fragments could pose great hazard and risk to ground and people. In recent years, methods and tools for predicting and analyzing debris reentry and ground risk assessment have been studied and developed in National Aeronautics and Space Ad-ministration (NASA), European Space Agency (ESA) and other organizations, including the group of the present authors. This paper reviews the current progress on this topic of debris reentry briefly. We outline the Monte Carlo method for uncertainty analysis, breakup prediction, and parameters affecting survivability of debris. The existing analysis tools can be classified into two categories, i.e. the object-oriented and the spacecraft-oriented methods, the latter being more accurate than the first one. The past object-oriented tools include objects of only simple shapes. For more realistic simulation, here we present an object-oriented tool debris reentry and ablation prediction system (DRAPS) developed by the present authors, which introduces new object shapes to 15 types, as well as 51 predefined motions and relevant aerodynamic and aerothermal models. The aerodynamic and aerothermal models in DRAPS are validated using direct simulation Monte Carlo (DSMC) method. | WU Ziniua HU Ruifeng QU Xi WANG Xiang WU Zhe | 2011 | Chinese Journal of Aeronautics2011,24,4: | 14 |
| 9 | Research progress on electrical signals in higher plants显示文摘This review introduces the characteristics of electrical signals in higher plants and their corresponding physiological significance, and describes in detail the impact of environmental factors (e.g. light and temperature) on the electrical potential of the plants. Also, we evaluate the measurement techniques used for electrical signals in plants, including intracellular measurement, extracellular measurement, measurement of the ion channel based on the patch-clamp technique and on the non-invasive microelectrode vibrating probe technique. We also give a brief review of the applications of these methods for investigating electrical signals in plants. The ionic mechanism of electrical activity in plants is then discussed in terms of environmental response in higher plants, and this is used to provide a theoretical basis for quantitative description of the electrical signals in plants. A model for interpretation of the electrical signal mechanisms in higher plants is discussed, but further experiments are required for the verification of this model. | Xiaofei Yana, Zhongyi Wang a, Lan Huang a, Cheng Wang b, Ruifeng Hou b, Zhilong Xu b, Xiaojun Qiao b a College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China b National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China | 2009 | Progress in Natural Science:Materials International2009,19,5: | 13 |
| 10 | The impact of land use change on soil organic carbon and labile organic carbon stocks in the Longzhong region of Loess Plateau显示文摘Land use change (LUC) is widely recognized as one of the most important driving forces of global carbon cycles. The soil organic carbon (SOC) and labile organic carbon (LOC) stores were investigated at arable land (AL), artificial grassland (AG), artificial woodland (AW), abandoned arable land (AAL) and desert steppe (DS) in the Longzhong region of the Loess Plateau in Northwest China. The results showed that conversions from DS to AL, AL to AG and AL to AAL led to an increase in SOC content, while the conversion from DS to AW led to a decline. The differences in SOC content were significant between DS and AW at the 20-40 cm depth and between AL and AG at the 0-10 cm depth. The SOC stock in DS at the 0-100 cm depth was 39.4 t/hm 2 , increased by 28.48% after cultivation and decreased by 19.12% after conversion to AW. The SOC stocks increased by 2.11% from AL to AG and 5.10% from AL to AAL. The LOC stocks changed by a larger magnitude than the SOC stocks, which suggests that it is a more sensitive index of carbon dynamics under a short-term LUC. The LOC stocks increased at 0-20 cm and 0-100 cm depths from DS to AW, which is opposite to that observed for SOC. The proportion of LOC to SOC ranged from 0.14 to 0.20 at the 0-20 cm depth for all the five land use types, indicating low SOC dynamics. The allocation proportion of LOC increased for four types of LUC conversion, and the change in magnitude was largest for DS to AW (40.91%). The afforestation, abandonment and forage planting on arable land led to sequestration of SOC; the carbon was lost initially after afforestation. However, the carbon sink effect after abandonment may not be sustainable in the study area. | LiHua ZHANG ZhongKui XIE RuiFeng ZHAO YaJun WANG | 2012 | Journal of Arid Land2012,4,3: | 13 |
| 11 | Review of System Strength and Inertia Requirements for the National Electricity Market of Australia显示文摘Synchronous generators(SGs)are still making major contributions to the re-stabilization of a power system following voltage/frequency disturbances,attributed to their inherent capability of providing system strength and inertia.However,SGs powered by fossil fuels are operating to a lesser extent and scheduled for decommissioning in the National Electricity Market(NEM)of Australia due to the accelerating increase of low bidding priced asynchronous generation of wind and solar,which leads to the reduction and even in some cases,a shortage of system strength and inertia.This paper comprehensively reviews the requirements of system strength and inertia in the NEM from an operational security perspective.Australia is the first country that established the regulation rules of system strength and inertia to accommodate issues of an emerging high penetration level of non-synchronous renewable generation. | Huajie Gu Ruifeng Yan Tapan Saha | 2019 | CSEE Journal of Power and Energy Systems2019,5,3: | 12 |
| 12 | Review of shock wave detection method in CFD post-processing显示文摘In the present computational fluid dynamics (CFD) community, post-processing is regarded as a procedure to view parameter distribution, detect characteristic structure and reveal physical mechanism of fluid flow based on computational or experimental results. Field plots by contours, iso-surfaces, streamlines, vectors and others are traditional post-processing techniques. While the shock wave, as one important and critical flow structure in many aerodynamic problems, can hardly be detected or distinguished in a direct way using these traditional methods, due to possible confusions with other similar discontinuous flow structures like slip line, contact discontinuity, etc. Therefore, method for automatic detection of shock wave in post-processing is of great importance for both academic research and engineering applications. In this paper, the current status of methodologies developed for shock wave detection and implementations in post-processing platform are reviewed, as well as discussions on advantages and limitations of the existing methods and proposals for further studies of shock wave detection method. We also develop an advanced post-processing software, with improved shock detection. | Wu Ziniu Xu Yizhe Wang Wenbin Hu Ruifeng | 2013 | Chinese Journal of Aeronautics2013,26,3: | 11 |
| 13 | P wave velocity structure of upper and middle crust beneath the Three Gorges reservoir dam and adjacent regions显示文摘The three-dimensional P wave velocity structures of upper and middle crust beneath the Three Gorges reservoir dam and adjacent regions were reconstructed by means of the seismic tomography, using the absolute P-arrivals from the events observed by the Three Gorges seismic network. Our preliminary study of the deep structure shows: (1) the lithology of the Huangling anticline, integral and highly so-lidified, exhibits a uniformity. Down to a depth of 20 km, the Huangling anticline still shows high- velocity anomalies. Note that the characteristics of the velocity images with the different depths are not the same; (2) the depth of the sedimentary rocks beneath the entire Zigui basin is not constant, which is less than 6 km; (3) the top boundary of the crystalline basement varies from 0 to 7 km, whereas the bottom one between 14 and 16 km; (4) the partially molten substances of the upper mantle are located in the Badong-Zigui and its adjacent regions as well as nearby Peishi area. The development and evo-lution of the current tectonics are associated with the cooling and solidifying process of the molten substances within the upper mantle; (5) the different velocity structures of the deep crust in both east and west side of the Jiuwanxi fault are to be investigated in order to understand the origin of gravita-tional gradient zone in the Three Gorge areas; and (6) the velocities within the upper crust would be affected by reservoir water permeability. | LI Qiang ZHAO Xu CAI JinAn LIU RuiFeng LONG GuiHua AN YanRu | 2009 | Science China Earth Sciences2009,52,4: | 11 |
| 14 | Aerodynamic map for soft and hard hypersonic level flight in near space显示文摘In this note,we design a velocity-altitude map forhypersonic level flight in near space of altitude 20-100 km.This map displays aerodynamic-related parameters associ-ated with near space level flight,schematically or quantita-tively.Various physical conditions for the near-space levelflight are then characterized,including laminar or turbulentflow,rarefaction or continuous flow,aerodynamic heating,aswell as conditions for sustaining level flight with and withoutorbital effect.This map allows one to identify conditions tohave soft flight or hard flight,and this identification wouldbe helpful for making correct planning on detailed studies ofaerodynamics or making initial design of near space vehicles. | Ruifeng Hu Ziniu Wu Zhe Wu Xiaoxin Wang Zhongwei Tian School of Aerospace, Tsinghua University, 100084 Beijing, China | 2009 | Acta Mechanica Sinica2009,25,4: | 11 |
| 15 | Recent advances in molecular basis for strigolactone action显示文摘Strigolactones(SLs) are a very special class of plant hormones, which act as endogenous signals to regulate shoot branching in plants, and also serve as rhizosphere signals to regulate interactions of host plants with heterologous organisms such as symbiotic arbuscular mycorrhizal fungi and parasitic weeds. In this short review, we give a brief description of novel discoveries in SL biosynthesis pathway, and mainly summarize the recent advances in SL perception and signal transduction. | Ruifeng Yao Jiayang Li Daoxin Xie | 2018 | Science China(Life Sciences)2018,61,3: | 10 |
| 16 | 3-D geologic architecture of Xiong'an New Area: Constraints from seismic reflection data显示文摘Studying the geologic architecture of the Xiong'an New Area will provide important basis for the evaluation of crustal stability, urban planning and infrastructural projects in this region, and it is also of great significance in exploring the occurrence of oil and gas, geothermal, hot dry rock and other resources. The stratigraphic system of the study area is established by using latest high quality seismic reflection and deep borehole data. Characteristics of the major faults developed in the study area are finely depicted with the method of structural analysis. Tectonic evolution of Xiong'an and adjacent areas is reconstructed by using balanced geological cross-section technique. The tectonic activity of the study area is discussed on the basis of the development of secondary faults and the distribution of active earthquakes across the region. This study demonstrates that Xiong'an New Area is located at the transfer zone of the central and northern Jizhong Depression. There are three regional unconformities developed in this area, by which four structural layers are sub-divided. Controlled by the Taihang Mountain piedmont fault, the Daxing fault, the Rongcheng fault and the Niudong fault, the structural framework of the study area is characterized by intervening highs with sags. This structural pattern has an important controlling over the reservoir characteristics, hydrocarbon accumulation and the distribution of geothermal resources and hot dry rock within this region. Rifting in this area began in the early Paleogene, exhibiting typical episodic character and became inactive in Neogene. The development feature of secondary faults along with the distribution of active earthquakes indicate that Xiong'an New Area has been in a relatively stable tectonic setting since the Neogene, while the Baxian Sag and other structural units to the east of it have obviously been in a rather active environment. | Dengfa HE Shuaiqiang SHAN Yuying ZHANG Renqi LU Ruifeng ZHANG Yongqian CUI | 2018 | Science China Earth Sciences2018,61,8: | 10 |
| 17 | Vegetation patterns and species-environment relationships in the Gurbantunggut Desert of China显示文摘Gurbantunggut 沙漠在中国是最大的马厩和半马厩沙沙漠,还很少数据为这些多样的荒芜的风景在植被模式和种类环境关系上存在。调查区域的沙沙丘主要具有 | QIAN Yibing WU Zhaoning ZHAO Ruifeng ZHANG Liyun | 2008 | Journal of Geographical Sciences2008,18,4: | 10 |
| 18 | Spatial structure of valley economic development in the mountainous areas in Beijing显示文摘山谷经济是在被山谷开发的各种各样的人物定义的多山的区域开发的一个新模式,并且是区分为多山的区域开发的节俭的地理模式。在在山谷的不同多山的元素的分发的特殊空间联合关系是为山发展研究的新题目,并且如此的研究为研究和惯例两个都是有意义的。把简短探索基于关于多山的区域开发和追随者的长期的研究进涵义和山谷经济的空间组织进程,作者在北京多山的区域分析了山谷经济的开发的现在的状况,在北京多山的区域学习了特征和山谷经济的空间结构的变化的影响,并且最后建议了山谷经济的空间结构的合理安排山谷经济在新时代在北京多山的区域在发展和功能的转变起一个重要作用,这在这研究被考虑。第一,山谷经济没被行政边界构画出,并且它沿着主要交通线粗略地在多山的区域连接大多数村庄。因此,山谷经济能在多山的区域对发展施加积极影响,至少在象在多山的区域和农村、城市的区域的协调发展的工业结构的重新整理那样的方面。另外,在北京多山的区域的山谷经济在第二等的集中的一个空间组织阶段被发展,这被发现,它被节省资源的、生态的保护和工业优化描绘。因此,山谷经济的发展将在多山的区域对在生态的保护和经济开发之间的协作有用,并且将支持多山的区域的综合发展。在北京多山的区域的山谷经济的发展中的模式将在北京多山的区域的功能的角色的转变为决策提供基础,并且在另一方面,将在北京外面在多山的区域为研究介绍经验。 | ZHANG Yifeng JIA Dameng ZHANG Hongye TAN Jie SONG Siyu SUN Ruifeng | 2011 | Journal of Geographical Sciences2011,21,2: | 9 |
| 19 | SIRT1 suppresses PMA and ionomycin-induced ICAM-1 expression in endothelial cells显示文摘Intercellular adhesion molecule-1 (ICAM-1) plays an important role in the recruitment of leukocytes to the endothelium, which causes inflammation and initiation of atherosclerosis. We have previously shown that endothelium-specific over-expression of class III deacetylase SIRT1 decreases atherosclerosis. We therefore addressed the hypothesis that SIRT1 suppresses ICAM-1 expression in the endothelial cells. Here, we found that expression of SIRT1 and ICAM-1 was significantly induced by PMA and ionomycin (PMA/Io) in human umbilical vein endothelial cells (HUVECs). Adenovirus-mediated over-expression of SIRT1 significantly inhibited PMA/Io-induced ICAM-1 expression in HUVECs. Knockdown of SIRT1 by RNA interference (RNAi) resulted in increased expression of ICAM-1 in HUVECs. Luciferase report assay showed that over-expression of SIRT1 suppressed ICAM-1 promoter activity both in basic and in PMA/Io-induced conditions. We further found that SIRT1 was involved in transcription complex binding on the ICAM-1 promoter by chromatin immunoprecipitation (ChIP) assays. Furthermore, SIRT1 RNAi increased NF-κB p65 binding ability to the ICAM-1 promoter by ChIP assays. Overall, these data suggests that SIRT1 inhibits ICAM-1 expression in endothelial cells, which may contribute to its anti-atherosclerosis effect. | JIA YuYan GAO Peng CHEN HouZao WAN YanZhen ZHANG Ran ZHANG ZhuQin YANG RuiFeng WANG Xu XU Jing LIU DePei | 2013 | Science China(Life Sciences)2013,56,1: | 9 |
| 20 | Cocrystallization of N-donor type compounds with 5-sulfosalicylic acid:The effect of hydrogen-bonding supramolecular architectures显示文摘Benzotriazole,N,N'-dimethylpiperazine and N-methylpiperazine were applied to crystallize with 5-sulfosalicylic acid(5-H2SSA),affording three new binary molecular cocrystals [(C6H6N3+).(C7H5O6S-)].H2O(1),[(C6H16N22+)1/2.(C7H5O6S-)].H2O(2) and [(C5H14N22+).(C7H5O6S-)2].3H2O(3) under general conditions.Proton-transferring occurs from acid to nitrogen of N-donor compounds in all compounds 1,2 and 3.Analysis of the hydrogen-bonding synthons and their effects on crystal packing were also presented in the context of crystal engineering and host-guest chemistry.In compound 1,1-D infinite chains are extended to a 2-D layered architecture via strong O-H...O hydrogen bonds and then to a 3-D network by N-H...O interactions.Compound 2 and 3 both have the 1-D chain which is formed by O-H...O bonds and weak C-H...O hydrogen bonds.A common intramolecular S(6) [synthon I] ring is formed by the hydroxyl with the carboxyl group in all three compounds. | WANG Lei XU LingYan XUE RuiFeng LU XiFeng CHEN RuiXin TAO XuTang | 2012 | Science China Chemistry2012,55,1: | 8 |