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| 1 | Heavy metal pollution of soils and vegetables in the midstream and downstream of the Xiangjiang River, Hunan Province显示文摘219 农业土壤和 48 件蔬菜样品的一个总数在湖南省 Xiangjiang 河(Hengyang 长沙节) 从中流并且下游地被收集。累积特征。 | WANG Lixia GUO Zhaohui XIAO Xiyuan CHEN Tongbin LIAO Xiaoyong SONG Jie WU Bin | 2008 | Journal of Geographical Sciences2008，18，3： | 56 |
| 2 | Subcellular distribution and compartmentalization of arsenic in Pteris vittata L.显示文摘The subcellular distribution of arsenic (As) in Pteris vittata L., an As-hyperaccumulator, was studied to de- termine As compartmentalization and to explore the mecha- nisms that confer As tolerance. When the plant was grown in a nutrient solution without additional As, most of the accu- mulated As was isolated to the cell wall. However, in plants growing in a nutrient solution containing 0.1 or 0.2 mmol/L As, approximately 78% of the total As accumulated within the pinna. The proportions of As accumulation in the cyto- plasmic supernatant fraction were 78% of that in the pinna and 61% of that in the plant. In either treatment group (0.1 or 0.2 mmol/L As), the fraction containing the lowest level of As was the organelle fraction. These results suggest that As accumulates in the pinna where it is primarily distributed in the cytoplasmic supernatant fraction. The role of As com- partmentalization may be intricately linked with As detoxi- fication in P. vittata L. | CHEN Tongbin YAN Xiulan LIAO Xiaoyong XIAO Xiyuan HUANG Zechun XIE Hua ZHAI Limei | 2005 | Chinese Science Bulletin2005，50，24： | 17 |
| 3 | The Formation and Distribution of the Marine Hydrocarbon Source Rock in the Tarim Basin,NW China显示文摘摘要:在在海洋的来源岩石和大陆人来源岩石之间的类型和分发有重要差别。根据岩性学,在 Tarim 盆的寒武纪奥陶纪的来源岩石被划分成二种类型:碳酸盐来源岩石和泥采购岩石。来源岩石的二个集合主要在形成,降低中间的寒武纪的碳酸盐来源岩石和泥来源岩石,降低中间的奥陶纪泥来源岩石和上面的奥陶纪的三个集合被开发石灰泥来源岩石。来源岩石的 stratigraphic 和 areal 分布被高度和沉积外形分别地控制。泥来源岩石深在斜坡半被开发海环境。来源岩石在斜坡发展了沉积环境与深在半开发的缺氧的环境和环境被联系海与起来流动的海水有一种靠近的关系。碳酸盐来源岩石主要在 highstand 系统道的平台斜坡被开发,它亲密地通常与盐岩石被联系。降低中间的寒武纪的碳酸盐来源岩石主要在 Bachu, Tazhong, Tangguzibasi 和 Yingmaili 区域被开发。降低中间的寒武纪的泥来源岩石主要在 Kunan 1-Tadong 的线的区域东方被开发 1。降低中间的奥陶纪泥来源岩石主要在 Manjiaer 消沉的东方斜坡被开发。早奥陶纪的碳酸盐来源岩石主要在 highstand 系统道的站台斜坡被开发,例如 Tabei, Tazhong 的北方斜坡, Bachu 区域和 Keping 区域的南方边缘。 | CAI Xiyuan WANG Yi | 2008 | Acta Geologica Sinica(English Edition)2008，82，3： | 12 |
| 4 | Weathering of Pisha-Sandstones in the Wind-Water Erosion Crisscross Region on the Loess Plateau显示文摘Two types of pisha-sandstones of purple sandstones and gray sandstones,widely distributing in the wind-water erosion crisscross region of China,were selected and used in laboratory experiments for a better understanding of the drying-wetting-freezing weathering process resulting from the apportionment of water or salt solution to rock samples.Weathering experiments were carried out under the conditions of environment control(including temperature,moisture and salt solution).All rock samples were frequently subjected to 140 drying-wetting-freezing cycles.The influences of weathering process were evaluated.It was found that the different treatments of moisture and salt solution applications could affect the nature of the weathering products resulting from drying-wetting-freezing.It was also observed that salt solution could effectively alleviate the weathering of pisha-sandstones.Although not all the observations could be explained,it was apparent that simulated environmental factors had both direct and indirect effects on the weathering of rocks. | NI Hanbin ZHANG Liping ZHANG Dengrong WU Xiyuan FU Xingtao | 2008 | Journal of Mountain Science2008，5，4： | 11 |
| 5 | Potential of Pteris vittata L. for phytoremediation of sites co-contaminated with cadmium and arsenic: The tolerance and accumulation显示文摘领域调查和温室实验被进行学习 Pteris vittata L 的忍耐。(中国刹车) 到镉(Cd ) 和它为重新调停的可行性,地点与 Cd 和砷共同污染(作为) 。结果显示出那 P。vittata 能在与 Cd 的 80 mg/kg 刺并且容忍的壶土壤幸存象全部的 Cd 的 301 mg/kg 和 diethyltriaminepenta 醋酸(DTPA ) 的 26.8 mg/kg 一样大在地条件下面的可引出的 Cd。在复叶的 Cd 的最高的集中在这个领域里是在 920 mg As/kg 和 98.6 mg Cd/kg 的全部的土壤集中下面的 186 mg/kg,而就在温室下面的 2.6 mg/kg 调节。P 的生态型。vittata 在 Cd 的忍耐和累积被区分,并且他们中的一些不能仅仅高容忍土壤 Cd 的集中,而且在他们的复叶的 Cd 的积累的高集中。由 P 的砷举起和交通。vittata 没在底层被禁止(≤ 20 mg/kg ) Cd 增加。没有 Cd 的增加,比作处理,集中被 103.8% 在 20 mg Cd/kg 增加的复叶,与 6434 mg/kg 的高水平。结果建议了 P 的 Cd 容忍的生态型。是有效地提取的 vittata 和从这个地点的 Cd 与 Cd 并且作为共同污染,并且可能习惯于重新调停并且重新生长这类地点。 | XIAO Xiyuan CHEN Tongbin AN Zhizhuang LEI Mei HUANG Zechun LIAO Xiaoyong LIU Yingru | 2008 | Journal of Environmental Sciences2008，20，1： | 11 |
| 6 | Origin and Distribution of Groundwater Chemical Fields of the Oilfield in the Songliao Basin,NE China显示文摘There are many factors affecting the chemical characteristics of groundwater in the forming process of groundwater chemical fields, such as freshening due to meteoric water leaching downwards, freshening due to mudstone compaction and water release, concentration due to infiltration and freshening due to dehydration of clay minerals. As a result, the groundwater chemical fields are characterized by lengthwise stages and planar selectivity. The former arouses vertical chemical zonality of groundwater. Five units could be identified downwards in the Songliao basin: (1) freshening zone due to downward-leaching meteoric water, (2) concentration zone due to evaporation near the ground surface, (3) freshening zone due to mudstone compaction and water release, and concentration zone due to compaction and infiltration, (4) freshening zone due to dehydration of clay minerals, and (5) filtration-concentration zone; whereas the latter determines the planar division of groundwater chemical fields: (1) the freshening area due to meteoric water, asymmetrically on the margin of the basin, (2) the freshening area due to mudstone compaction and water release in the central part of the basin, (3) the leaky area, which is a transitional zone, and (4) leakage-evaporation area, which is a concentration zone. In the direction of centrifugal flows caused by mudstone compaction in the depression area, the mineralization degree, concentrations of Na+ and Cl?, and salinity coefficient (SC) increase, while concentrations of (CO32 ?+HCO3 ?) and SO42 ?, metamorphism coefficient (MC) and desulfuration coefficient (DSC) decrease. However, all these parameters increase in the direction of gravity-induced centripetal flows. | JIN Aimin LOU Zhanghua ZHU Rong CAI Xiyuan GAO Ruiqi | 2005 | Acta Geologica Sinica(English Edition)2005，79，5： | 8 |
| 7 | Adaptive augmentation of gain-scheduled controller for aerospace vehicles显示文摘This paper proposes an adaptive augmentation control design approach of the gain-scheduled controller.This extension is motivated by the need for augmentation of the baseline gainscheduled controller.The proposed approach can be utilized to design flight control systems for advanced aerospace vehicles with a large parameter variation.The flight dynamics within the flight envelope is described by a switched nonlinear system,which is essentially a switched polytopic system with uncertainties.The flight control system consists of a baseline gain-scheduled controller and a model reference adaptive augmentation controller,while the latter can recover the nominal performance of the gainscheduled controlled system under large uncertainties.By the multiple Lyapunov functions method,it is proved that the switched nonlinear system is uniformly ultimately bounded.To validate the effectiveness of the proposed approach,this approach is applied to a generic hypersonic vehicle,and the simulation results show that the system output tracks the command signal well even when large uncertainties exist. | Xiyuan Huang Qing Wang Yali Wang Yanze Hou Chaoyang Dong | 2013 | Journal of Systems Engineering and Electronics2013，24，2： | 8 |
| 8 | A new type of damper with friction-variable characteristics显示文摘Professor T.T.Soong is one of the early pioneers in fi eld of earthquake response control of structures.A new type of smart damper,which is based on an Energy Dissipating Restraint(EDR),is presented in this paper.The EDR by Nims and Kelly,which has a triangle hysteretic loop,behaves like an active variable stiffness system(AVS) and possesses the basic characteristics of a linear viscous damper but has diffi culty in capturing the output and large stroke simultaneously needed for practical applicataions in engineering structures.In order to overcome this limitation,the friction surface in the original Sumitomo EDR is divided into two parts with low and high friction coeffi cients in this paper.The results of f inite element analysis studies show that the new type of smart friction damper enables large friction force in proportion to relative displacement between two ends of the damper and has a large allowable displacement to fi t the demands of engineering applications.However,unlike the EDR by Nims and Kelly,this type of friction variable damper cannot self re-center.However,the lateral stiffness can be used to restore the structure.The nonlinear time history analysis of earthquake response for a structure equipped with the proposed friction variable dampers was carried out using the IDARC computer program.The results indicate that the proposed damper can successfully reduce the earthquake response of a structure. | Zhou Xiyuan Peng Lingyun | 2009 | Earthquake Engineering and Engineering Vibration2009，8，4： | 7 |
| 9 | 3D Lamellar-Structured Graphene Aerogels for Thermal Interface Composites with High Through-Plane Thermal Conductivity and Fracture Toughness显示文摘Although thermally conductive graphene sheets are efficient in enhancing in-plane thermal conductivities of polymers,the resulting nanocomposites usually exhibit low through-plane thermal conductivities,limiting their application as thermal interface materials.Herein,lamellarstructured polyamic acid salt/graphene oxide(PAAS/GO)hybrid aerogels are constructed by bidirectional freezing of PAAS/GO suspension followed by lyophilization.Subsequently,PAAS monomers are polymerized to polyimide(PI),while GO is converted to thermally reduced graphene oxide(RGO)during thermal annealing at 300℃.Final graphitization at 2800℃ converts PI to graphitized carbon with the inductive effect of RGO,and simultaneously,RGO is thermally reduced and healed to high-quality graphene.Consequently,lamellar-structured graphene aerogels with superior through-plane thermal conduction capacity are fabricated for the first time,and its superior through-plane thermal conduction capacity results from its vertically aligned and closely stacked high-quality graphene lamellae.After vacuum-assisted impregnation with epoxy,the resultant epoxy composite with 2.30 vol% of graphene exhibits an outstanding through-plane thermal conductivity of as high as 20.0 W m^−1 K^−1,100 times of that of epoxy,with a record-high specific thermal conductivity enhancement of 4310%.Furthermore,the lamellar-structured graphene aerogel endows epoxy with a high fracture toughness,~1.71 times of that of epoxy. | Pengfei Liu Xiaofeng Li Peng Min Xiyuan Chang Chao Shu Yun Ding Zhong-Zhen Yu | 2021 | Nano-Micro Letters2021，13，2： | 7 |
| 10 | Cretaceous Sandbody Characters at Shallow-Water Lake Delta Front and the Sedimentary Dynamic Process Analysis in Songliao Basin,China显示文摘从钻基于丰富的信息,核心,并且记载,地形学,河和湖的尺寸,气候变化和湖水平的影响是在浅水的三角洲前面的 sandbodies 上的变化系统地被总结,沉积动态过程被分析。在 sandbodies 和他们从发展井的水动力学特征揭示的平面分发之中的 interwell 通讯在分析期间是综合的。为浅水的三角洲的发展的基本要求包括了扁平的地形学和一致减退率。三角洲平原与宽三角洲前面和 predelta 顺利被连接,没有在吉伯三角洲模型定义的 topset, foreset,和 bottomset 的三方面的结构。因为弱河的效果和湖精力,是强壮的,小、散布的浅水的三角洲被搜索以橹反推的水,沿海的水流,和湖波浪破坏,导致沿海的表免职。当河的效果变得更强壮,湖精力变得更弱,浅水的三角洲的形状从表转了到块然后分支。 | CAI Xiyuan ZHU Rong | 2011 | Acta Geologica Sinica(English Edition)2011，85，6： | 6 |
| 11 | Acidity of Aerosols during Winter Heavy Haze Events in Beijing and Gucheng, China显示文摘We investigated the acidity and concentrations of water-soluble ions in PM_(2.5) aerosol samples collected from an urban site in Beijing and a rural site in Gucheng, Hebei Province from November 2016 to January 2017 to gain an insight into the formation of secondary inorganic species. The average SO_4^(2–), NO_3~–, and NH_4^+ concentrations were 8.3,12.5, and 14.1 μg m^(–3), respectively, at the urban site and 14.0, 14.2, and 24.2 μg m^(–3), respectively, at the rural site.The nitrogen and sulfur oxidation ratios in urban Beijing were correlated with relative humidity(with correlation coefficient r = 0.79 and 0.67, respectively) and the aerosol loadings. Based on a parameterization model, we found that the rate constant of the heterogeneous reactions for SO_2 on polluted days was about 10 times higher than that on clear days, suggesting that the heterogeneous reactions in the aerosol water played an essential role in haze events.The ISORROPIA II model was used to predict the aerosol pH, which had a mean(range) of 5.0(4.9–5.2) and 5.3(4.6–6.3) at the urban and rural site, respectively. Under the conditions with this predicted pH value, oxidation by dissolved NO_2 and the hydrolysis of N_2O_5 may be the major heterogeneous reactions forming SO_4^(2–) and NO_3~– in haze.We also analyzed the sensitivity of the aerosol p H to changes in the concentrations of SO_4^(2–), NO_3~–, and NH_4^+ under haze conditions. The aerosol p H was more sensitive to the SO_4^(2–) and NH_4^+ concentrations with opposing trends, than to the NO_3~– concentrations. The sensitivity of the p H was relatively weak overall, which was attributed to the buffering effect of NH_3 partitioning. | Xiyuan CHI Pengzhen HE Zhuang JIANG Xiawei YU Fange YUE Longquan WANG Bokun LI Hui KANG Cheng LIU Zhouqing XIE | 2018 | Journal of Meteorological Research2018，32，1： | 4 |
| 12 | Oxidation and Mechanical Properties of SiC/SiC-MoSi_2-ZrB_2 Coating for Carbon/Carbon Composites显示文摘To improve oxidation resistance of carbon/carbon(C/C) composites,a SiC/SiC-MoSi_2-ZrB_2 double-layer ceramic coating was prepared on C/C composites by two-step pack cementation.The phase compositions and microstructures of as-prepared multilayer coating were characterized by X-ray diffraction and scanning electron microscopy.The oxidation resistance at 1773 K and the effect of thermal shock between 1773 K and room temperature on mechanical performance of coated specimens were investigated.The results show that the SiC/SiC-MoSi_2-ZrB_2 coating exhibits dense structure and is composed of SiC,Si,MoSi_2 and ZrB_2·It can protect C/C composites from oxidation at 1773 K for more than 510 h with weight loss of 0.5%.The excellent anti-oxidation performance of the coating is due to the formation of SiO_2-ZrSiO_4 complex glassy film.The coating can also endure the thermal shocks between 1773 K and room temperature for 20 times with residual flexural strength of 86.1%. | Xiyuan Yao Hejun Li Yulei Zhang Yongjie Wang | 2014 | Journal of Materials Science & Technology2014，30，2： | 4 |
| 13 | Parameter Selection Method for SVM with PSO显示文摘 | PENG Xiyuan WU Hongxing PENG Yu | 2006 | Chinese Journal of Electronics2006，15，4： | 4 |
| 14 | Multiresolution Analysis and Forecasting of Mobile Communication Traffic显示文摘 | PENG Yu LEI Miao GUO Jia PENG Xiyuan | 2013 | Chinese Journal of Electronics2013，22，2： | 3 |
| 15 | RELATIONSHIP BETWEEN PLASMA OPTIC SIGNAL AND PENETRATION DEPTH FOR PARTIAL-PENETRATION LASER WELDING显示文摘通过采样并且血浆分析 600 nm 从部分穿入的激光焊接射出的 400 ~ 的眼的信号处理,穿入深度怎么与焊接参数和血浆有关眼的信号被学习。在试验性的条件下面,眼的信号有的血浆对焊接穿入的变化的好反应,和信号的 RMS 价值在一个二次的曲线模式与穿入增加。在眼的信号和穿入深度也是的血浆之间的固有的关系分析了。当焊接速度在焊接宽度上有更多的影响时,激光力量在激光力量和焊接速度的二个普通参数之间,在穿入上有更多的影响,这也被发现。研究结果为穿入提供理论上、实际的底在部分穿入的激光焊接的即时监视或预言。 | WANG Chunming HU Lunji HU Xiyuan LIU Jianhua | 2006 | Chinese Journal of Mechanical Engineering2006，19，1： | 3 |
| 16 | Universal frequency engineering tool for microcavity nonlinear optics:multiple selective mode splitting of whispering-gallery resonances显示文摘Whispering-gallery microcavities have been used to realize a variety of efficient parametric nonlinear optical processes through the enhanced light–matter interaction brought about by supporting multiple high quality factor and small modal volume resonances.Critical to such studies is the ability to control the relative frequencies of the cavity modes,so that frequency matching is achieved to satisfy energy conservation.Typically this is done by tailoring the resonator cross section.Doing so modifies the frequencies of all of the cavity modes,that is,the global dispersion profile,which may be undesired,for example,in introducing competing nonlinear processes.Here,we demonstrate a frequency engineering tool,termed multiple selective mode splitting(MSMS),that is independent of the global dispersion and instead allows targeted and independent control of the frequencies of multiple cavity modes.In particular,we show controllable frequency shifts up to 0.8 nm,independent control of the splitting of up to five cavity modes with optical quality factors≳10^5,and strongly suppressed frequency shifts for untargeted modes.The MSMS technique can be broadly applied to a wide variety of nonlinear optical processes across different material platforms and can be used to both selectively enhance processes of interest and suppress competing unwanted processes. | Xiyuan Lu Ashutosh Rao Gregory Moille Daron A.Westly Kartik Srinivasan | 2020 | Photonics Research2020，8，11： | 3 |
| 17 | A Review of FPGA-Based Custom Computing Architecture for Convolutional Neural Network Inference显示文摘Convolutional neural network(CNN)has been widely adopted in many tasks.Its inference process is usually applied on edge devices where the computing resources and power consumption are limited.At present,the performance of general processors cannot meet the requirement for CNN models with high computation complexity and large number of parameters.Field-programmable gate array(FPGA)-based custom computing architecture is a promising solution to further enhance the CNN inference performance.The software/hardware co-design can effectively reduce the computing overhead,and improve the inference performance while ensuring accuracy.In this paper,the mainstream methods of CNN structure design,hardwareoriented model compression and FPGA-based custom architecture design are summarized,and the improvement of CNN inference performance is demonstrated through an example.Challenges and possible research directions in the future are concluded to foster research efforts in this domain. | PENG Xiyuan YU Jinxiang YAO Bowen LIU Liansheng PENG Yu | 2021 | Chinese Journal of Electronics2021，30，1： | 3 |
| 18 | Indoor INS/UWB-based Human Localization With Missing Data Utilizing Predictive UFIR Filtering显示文摘A combined algorithm for the loosely fused ultra wide band(UWB)and inertial navigation system(INS)-based measurements is designed under the indoor human navigation conditions with missing data.The scheme proposed fuses the INS-and UWB-derived positions via a data fusion filter.Since the UWB signal is prone to drift in indoor environments and its outage highly affects the integrated scheme reliability,we also consider the missing data problem in UWB measurements.To overcome this problem,the loosely-coupled INS/UWB-integrated scheme is augmented with a prediction option based on the predictive unbiased finite impulse response(UFIR)fusion filter.We show experimentally that,the standard UFIR fusion filter has higher robustness than the Kalman filter.It is also shown that the predictive UFIR fusion filter is able to produce an acceptable navigation accuracy under temporary missing UWB-data. | Yuan Xu Choon Ki Ahn Yuriy S. Shmaliy Xiyuan Chen Lili Bu | 2019 | IEEE/CAA Journal of Automatica Sinica2019，6，4： | 2 |
| 19 | Synthesis and performance characterization of Hafnium-based multilayer coating applied over carbon/carbon composites with sharp leading edge显示文摘Carbon/carbon(C/C)composites have been acknowledged as potential candidates in aerospace vehicles,but their oxygen sensitivity still remains an enormous challenge.In this work,a novel multilayer coating consisted of HfC-2.5 mol.%Hf_(6)Ta_(2)O_(17),HfC-40 mol.%SiC,HfC-2.5 mol.%Hf_(6)Ta_(2)O_(17) and HfC-60 mol.%SiC sublayers from surface to inside was designed and fabricated on the surface of C/C composites with sharp leading edge by plasma spraying.Its ablation resistance was assessed using oxyacetylene torch with a maximum temperature over 2300℃ and compared with monolayered coatings.The multilayer coating revealed preferable ablation retardation capacity evidenced by its integrated profile and less flaw quantity.Such benefits were primarily stemmed from the effective structural design and rational material selection.The former was able to reduce the thermal stress within the ablated scale,the latter contributed to rising the high-temperature resistance and oxygen barrier ability of the coating. | Guanghui Feng Xiyuan Yao Yulan Yu Hejun Li | 2023 | Journal of Materials Science & Technology2023，，22： | 2 |
| 20 | Progress in the research and development of nerve conduits显示文摘The reconstruction after peripheral nerve damage, especially for long‐segment nerve defects, remains a clinical challenge. Autologous nerve graft transplantation is an efficient method for the repair of peripheral nerve defects, but the involved com‐plications and shortcomings have greatly limited the clinical efficacy of treatments offered to patients with nerve defects. Thus, there is an urgent need to develop new therapeutic strategies and explore alternatives to autologous nerve transplantation in clinical practice, based on the knowledge of the peripheral nerve regeneration mechanism and biological histocompatibility principles. With significant advances in the research and application of nerve conduits, they have been used to repair peripheral nerve injury for several decades. In this paper, the study background of nerve conduits, their applications in clinic, status of conduit material research and construction of tissue‐engineered artificial nerves were reviewed. | Xiyuan Wang Lin Chen Qiang Ao Aruna Sharma Hari Shanker Sharma | 2015 | Translational Neuroscience and Clinics2015，1，2： | 2 |
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