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| 1 | Impacts of artificially planted vegetation on the ecological restoration of movable sand dunes in the Mugetan Desert,northeastern Qinghai-Tibet Plateau显示文摘Controlling desertification is an important ecological target for the Qinghai-Tibet Plateau of China,where studies on impacts of vegetation restoration measures on sandy soil improvement are still lacking.The Mugetan Desert in Guinan County,Qinghai Province,northeastern Qinghai-Tibet Plateau is a representative ecological restoration area.The impacts of artificial vegetation on the ecological restoration and its properties are studied by using field investigation and sample testing including contents of the surface layer and the vegetation composition of movable,semi-fixed,and fixed sand dunes.Results demonstrate that the moss crust has formed on the surface of a sand dune which has become fixed after 30 years under the impact of artificial vegetation(i.e.Cathay poplar).Meanwhile,the clay minerals,organic matter,and other soil available nutrients have markedly increased.A correlation has been found between these materials,i.e.,clay minerals and organic matter content increasing with silt and clay increases with reduction in sand content.In addition,soil nutrient were positively correlated with the increase of plant diversity.Under the current meteorological conditions,the artificial vegetation is helpful for the stabilization of sand dune and the ecological restoration in the Mugetan Desert. | Yanfu Li Zhiwei Li Zhaoyin Wang Wenlong Wang Yanhong Jia Shimin Tian | 2017 | International Journal of Sediment Research2017，32，2： | 8 |
| 2 | PRINCIPLES OF RIVER TRAINING AND MANAGEMENT显示文摘River regulation and river training have been performed for various purposes and negative effects have been shown in numerous cases. In some cases the negative effects are so serious that humans have to consider to 'renaturalize' the regulated rivers. Only by using the strategy of integrated river management the diverse river uses and natural fluvial processes and ecological systems may be harmonized. Based on analysis of case studies and data collected from literatures this paper presents the concept of integrated river management and four principles of river training. The integrated river management comprises: 1) taking the watershed, upper stream basin including the tributaries, middle and lower reaches and the estuary as an integrated entity in the planning, design and management; and 2) mitigating or controlling the negative impacts on hydrology, erosion and sedimentation, fluvial processes, land use and river use, environment and ecology while in achieving economic benefit from water resources development, flood safety management and hydropower exploitation. River training and management should be in accordance with the four principles: 1) extending the duration of river water flowing on the continent, which may be achieved by extending the river course or reducing the flow velocity; 2) controlling various patterns of erosions and reducing the sediment transportation in the rivers; 3) increasing the diversity of habitat and enhancing the connectivity between the river and riparian waters; and 4) restoring natural landscapes. | Zhaoyin WANG Shimin TIAN Yujun YI Guoan YU | 2007 | International Journal of Sediment Research2007，22，4： | 7 |
| 3 | Mineral composition and particle size distribution of river sediment and loess in the middle and lower Yellow River显示文摘Hyperconcentrated flows often occur in the middle and lower Yellow River(MLYR)and its tributaries,within which the main sediment source originates from the Loess Plateau of China due to serious water erosion.Little is known about the properties of river sediment that is transported by hyperconcentrated flows,particularly with respect to the mineral composition and size distribution.Samples of sediment and loess were collected in the northern,middle,and southern Loess Plateau and the mainstream and tributaries of the MLYR.A total of 18 loess samples and 24 river sediment samples were analyzed to determine their sediment size distribution and mineral composition.The bottom loess samples reflected the original sedimentary features of the Loess Plateau,and the median particle size reduced,and the clay content increased from the north to the south of the study region.The surface loess has been weathered under the action of wind and rainfall,and the clay particle content in the surface loess samples was higher than that in the undisturbed bottom loess.Erosion of the surface soil due to rainfall and surface runoff means that fine particles(mostly clay)have been washed away.The median diameter of surface loess particles was a little larger than that of the bottom loess particles where water erosion dominates.The particle size became coarser with increasing distance from the estuary in the MLYR,which reflects depositional sorting in the river channel.Significant logarithmic relations were found between the median diameter of the sediment particles and the i)non-clay mineral content and ii)clay mineral content.Thus,clay and non-clay mineral compositions can be conveniently estimated from the particle size distribution. | Shimin Tian Zhiwei Li Zhaoyin Wang Enhui Jiang Wenlong Wang Meng Sun | 2021 | International Journal of Sediment Research2021，36，3： | 3 |
| 4 | Study on Modification of Ultra-Stable Zeolite Prepared by Hydrothermal Method显示文摘极端马厩的沸石 DASY-0.0 被热水的方法在商业规模准备。它的结构进一步为在对待的 CP 被 XRF 分析并且描绘前后, .Thezeolite 取样的毛孔( CP )清洗经由处理被修改, XRD , NMR ,红外, BETand DTA.The 结果显示出那与由热水的过程的常规极端马厩的沸石 DASY-0.0prepared 比较, 修改CP 的沸石 SOYO 展出了更高的 relativecrystallinity ,更大的表面区域和毛孔体积,更高热的稳定性和包含的更少非结晶的非框架艾尔。 | Zhang Weilin Zhou Lingping Shen Shimin Li Zheng Zhu Yuxia Tian Huiping Long Jun | 2007 | China Petroleum Processing & Petrochemical Technology2007，9，2： | 2 |
| 5 | 在更低的黄河的水库的下游的活动范围的河的过程显示文摘水库下游的河隧道的进化是是的一个复杂过程仔细,与水库和隧道的运作的模式有关,边界调节。众多的研究在下游的水库的河的过程上被执行了。然而,仅仅他们的一些集中了于在流量沉积条件和隧道模式指示物之间的关系。另外,在河的过程上训练工作的河的影响很少被处理。在这份报纸,包括 Tiexie-Yiluo 河嘴活动范围, Huayuankou-Heigangkou 活动范围和 Jiahetan-Gaocun 活动范围,在更低的黄河的三节的进化过程在在 1960 和 2015 之间的隧道边界线和主流为变化被分析。象蜿蜒,主流的漫步范围和宽度 / 深度比率那样的隧道模式指示物基于黄河管理委员会的水文学部门获得的地大小被分析。在隧道进化上训练工作的河的效果然后被描述。自从 1960,众多的中型、大尺寸的水库在黄河上被造了,包括 Longyangxia 水库, Liujiaxia 水库和 Xiaolangdi 水库。这些水库扣押流量从在上游并且保留沉积,它在下游的活动范围改变流量和沉积条件。作为后果,泛滥的年度流量和频率和山峰都减少了。作为结果,河隧道上的流动动力学和他们的行动也被减少,它改变河功课的动态状态。用单个参数辨别规则和漫步的度在活动范围被削弱的辨别方程表演获得的辨别结果学习了。在隧道模式指示物的变化证明蜿蜒增加,漫步的范围在水的全部的年度体积与减小减少。然而,漫步的度有小关系到沉积集中。另外,河训练工作在控制河功课起一个重要作用。由于训练工作的河里的改进,河功课在一样的流量和沉积条件下面变得更稳定。考虑训练工作的河的影响的一条新辨别规则被建议。辨别结果被发现与实际的河模式适合很好,它证明辨别规则对更低的黄河适用。结果证明流量和沉积条件是在河功课的进化的最重要的因素。训练工作的河同时限制了主流的漫步的范围并且在河的过程起了一个重要作用。联合的两个因素导致河的稳定。 | TIAN Shimin WANG Weihong XIE Baofeng ZHANG Min | 2016 | Journal of Geographical Sciences2016，26，9： | 1 |
| 6 | Study on the Self-purification of Juma River显示文摘 | Shimin Tian Zhaoyin Wang Hongxia Shang | 2011 | Procedia Environmental Sciences2011，，： | 1 |
| 7 | Epidermal radio frequency electronics for wireless power transfer显示文摘Epidermal electronic systems feature physical properties that approximate those of the skin,to enable intimate,long-lived skin interfaces for physiological measurements,human–machine interfaces and other applications that cannot be addressed by wearable hardware that is commercially available today.A primary challenge is power supply;the physical bulk,large mass and high mechanical modulus associated with conventional battery technologies can hinder efforts to achieve epidermal characteristics,and near-field power transfer schemes offer only a limited operating distance.Here we introduce an epidermal,farfield radio frequency(RF)power harvester built using a modularized collection of ultrathin antennas,rectifiers and voltage doublers.These components,separately fabricated and tested,can be integrated together via methods involving soft contact lamination.Systematic studies of the individual components and the overall performance in various dielectric environments highlight the key operational features of these systems and strategies for their optimization.The results suggest robust capabilities for battery-free RF power,with relevance to many emerging epidermal technologies. | Xian Huang Yuhao Liu Gil Woo Kong Jung Hun Seo Yinji Ma Kyung-In Jang Jonathan A.Fan Shimin Mao Qiwen Chen Daizhen Li Hank Liu Chuxuan Wang Dwipayan Patnaik Limei Tian Giovanni A.Salvatore Xue Feng Zhenqiang Ma Yonggang Huang John A.Rogers | 2016 | Microsystems & Nanoengineering2016，2，1： | 1 |
| 8 | Methanol Distillation System: Process Analysis and Column Design显示文摘Base on industrial research and experience, the process of methanol distillation is analyzed,and above all, a new concept of high pressure flowsheet and low pressure flowsheet is defined. The new configuration helps to handle problems encountered in many factories in China. The inter influence between process and column internal pattern is also pointed out. Recommendation of new column internal designs is given. Finally, industrial examples tell the how the new concept works and the possibility of combining process to give more opens to solve engineering problems. | Sun Jinsheng Tian Yufeng Xu Shimin Ding Hui Wang Tao Li Xingang Zheng Yanmei | 2005 | 化工进展2005，24，z1： | 0 |
| 9 | Inhibition of Foxp4 Disrupts Cadherin-based Adhesion of Radial Glial Cells,Leading to Abnormal Differentiation and Migration of Cortical Neurons in Mice显示文摘Heterozygous loss-of-function variants of FOXP4 are associated with neurodevelopmental disorders(NDDs)that exhibit delayed speech development,intellectual disability,and congenital abnormalities.The etiology of NDDs is unclear.Here we found that FOXP4 and N-cadherin are expressed in the nuclei and apical end-feet of radial glial cells(RGCs),respectively,in the mouse neocortex during early gestation.Knockdown or dominant-negative inhibition of Foxp4 abolishes the apical condensation of N-cadherin in RGCs and the integrity of neuroepithelium in the ventricular zone(VZ).Inhibition of Foxp4 leads to impeded radial migration of cortical neurons and ectopic neurogenesis from the proliferating VZ.The ectopic differentiation and deficient migration disappear when N-cadherin is over-expressed in RGCs.The data indicate that Foxp4 is essential for N-cadherin-based adherens junctions,the loss of which leads to periventricular heterotopias.We hypothesize that FOXP4 variant-associated NDDs may be caused by disruption of the adherens junctions and malformation of the cerebral cortex. | Xue Li Shimin Zou Xiaomeng Tu Shishuai Hao Tian Jiang Jie-Guang Chen | 2023 | Neuroscience Bulletin2023，39，7： | 0 |
| 10 | Effect of streambed substrate on macroinvertebrate biodiversity显示文摘Macroinvertebrates areimportantcomponents of stream ecosystems,and are often used as indicator spe-cies for the assessment of river ecology.Numerous studies have shown that substrate is the primary physical envir-onmental variable affecting the taxa richness and density ofmacroinvertebrates.The aimofthiswork istostudythe effects of the characteristics of streambed substrate,such as grain size,shape,and roughness,on the composition and biodiversity of macroinvertebrates.A field experi-ment was done on the Juma River,a second-order moun-tain stream in northern China.Substrata of cobbles,hewn stones,pebbles,coarse sand,and fine sand were used to replace the original gravel and sand bed in a stretch of 30 m in length.The sampling results indicated that the macroinvertebrate assemblage is significantly affected by the grain size,porosity and interstitial dimension of the substrate,while it is rarely affected by the shape and the surface roughness of the experimental substrata.Macroinvertebrate compositions in cobbles and hewn stones were stable and changed least over time.The taxa richness and density of individuals in the substrata of cobbles,hewn stones,and pebbles are much higher than in those of the coarse sand and fine sand. | Xuehua DUAN Zhaoyin WANG Shimin TIAN | 2008 | Frontiers of Environmental Science & Engineering2008，2，1： | 0 |
| 11 | Multipoint fiber-optic laser–ultrasound generation along a fiber based on the core-offset splicing of fibers显示文摘Fiber-optic laser–ultrasound generation is being used in an increasing number of applications, including medical diagnosis, material characterization, and structural health monitoring. However, most currently used fiber-optic ultrasonic transducers allow effective ultrasound generation at only a single location, namely, at the fiber tip, although there have been a few limited proposals for achieving multipoint ultrasound generation along the length of a fiber. Here we present a novel fiber-optic ultrasound transducer that uses the core-offset splicing of fibers to effectively generate ultrasound at multiple locations along the fiber. The proposed laser–ultrasonic transducer can produce a balancedstrength signal between ultrasonic generation points by reasonably controlling the offsets of the fibers. The proposed transducer has other outstanding characteristics, including simple fabrication and low cost. | XIAOLONG DONG SHIMIN GAO JIAJUN TIAN YONG YAO | 2017 | Photonics Research2017，5，4： | 0 |
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