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Science China Earth Sciences 2007年第5期50卷 736-744页

作者： WANG NingLian YAO TanDong yang xiangdong SHEN Ji WANG Yong Key Laboratory of Cryosphere and Environment Cold and Arid Regions Environmental and Engineering Research InstituteChi-nese Academy of SciencesLanzhou 730000China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100085China Nanjing Institute of Geography and Limnology Chinese Academy of SciencesNanjing 210008China

In this paper, we analyzed the variations of dust proxies in the Dunde, Malan and Chongce ice cores from the northern Tibetan Plateau and the Hongjiannao lacustrine sediment core from north Shaanxi Province, and found that they all showed a general decrease trend over the past century. Owing to the fact that all these ice cores and lacustrine core were retrieved from the margins and/or the leeward sides of the major areas of dust events in north China, their records could suggest that the dust event frequency in north China declined over the study period. This decrease trend might be attributed to increasing precipitation and weakening westerly. However, human activities have made the areal extent of desertification expand acceleratingly in north China. This status could make it possible that dust events would occur on a large spatial scale under the future climate change, which would be a big environmental issue we shall face.

关键词： north China dust event frequency climate change

MS1 is essential for male fertility by regulating the microsporocyte cell plate expansion in soybean

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Science China(Life Sciences) 2021年第9期64卷 1533-1545页

作者： Xiaolong Fang Xiaoyuan Sun xiangdong yang Qing Li Chunjing Lin Jie Xu Wenjun Gong Yifan Wang Lu Liu Limei Zhao Baohui Liu Jun Qin Mengchen Zhang Chunbao Zhang Fanjiang Kong Meina Li Innovative Center of Molecular Genetics and Evolution School of Life SciencesGuangzhou UniversityGuangzhou 510006China Soybean Research Institute National Engineering Research Center for SoybeanJilin Academy of Agricultural SciencesChangchun 130033China State Key Laboratory of Rice Biology China National Rice Research InstituteChinese Academy of Agricultural SciencesHangzhou 311401China Core Facility and Technical Service Center for SLSB School of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghai 200240China Cereal&Oil Crop Institute Hebei Academy of Agricultural and Forestry SciencesShijiazhuang 050031China

Male sterility is an essential trait in hybrid seed production,especially for monoclinous and autogamous food *** male-sterile ms1 mutant has been known for more than 50 years and could be instrumental in making hybrid ***,the gene responsible for the male-sterile phenotype has remained ***,we report the map-based cloning and characterization of the MS1 gene in ***1 encodes a kinesin protein and localizes to the nucleus,where it is required for the male meiotic cytokinesis after telophase Ⅱ.We further substantiated that MS1 colocalizes with microtubules and is essential for cell plate formation in soybean male gametogenesis through *** ms1 and CRISPR/Cas9 knockout mutants show complete male sterility but are otherwise phenotypically normal,making them perfect tools for producing hybrid *** identification of MS1 has the practical potential for assembling the sterility system and speeding up hybrid soybean breeding.

关键词： soybean male sterility ms1 kinesin cytokinesis hybrid breeding

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履带式移动机器人动力学模型及其反馈控制

清华大学学报（自然科学版） 2006年第8期46卷 1377-1380页

作者：李岩杨向东陈恳清华大学精密仪器与机械学系制造工程研究所北京100084

履带结构被广泛地应用在移动式机器人的设计当中。为提高其反馈控制模型的精度,该文详细分析了履带式机器人的受力特点,提出了一种适于进行控制器设计的履带机器人模型,并在此基础上,按照反馈线性化的思想,提出了一种履带式机器人稳定... 详细信息

履带结构被广泛地应用在移动式机器人的设计当中。为提高其反馈控制模型的精度,该文详细分析了履带式机器人的受力特点,提出了一种适于进行控制器设计的履带机器人模型,并在此基础上,按照反馈线性化的思想,提出了一种履带式机器人稳定路径跟踪控制器的设计方法,同时给出了方法的非奇异条件。该文提出的控制系统模型和路径跟踪方法,为履带式机器人控制系统设计提供了理论依据。

关键词：履带式机器人滑动操纵模型反馈线性化

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基于分割MC算法的超声影像三维重建方法

清华大学学报（自然科学版） 2010年第8期50卷 1214-1218页

作者：刘少丽杨向东陈恳清华大学精密仪器与机械学系摩擦学国家重点实验室北京100084

为了克服传统MC(marching cubes)算法对空间所有体素进行处理时执行效率不高和分割阈值难以确定的缺点,提出了一种基于分割MC算法的超声影像三维重建面绘制方法。它将分割后的超声图像作为分割MC算法的输入,利用分割结果构造等值面,提... 详细信息

为了克服传统MC(marching cubes)算法对空间所有体素进行处理时执行效率不高和分割阈值难以确定的缺点,提出了一种基于分割MC算法的超声影像三维重建面绘制方法。它将分割后的超声图像作为分割MC算法的输入,利用分割结果构造等值面,提高了三维重建的速度和质量。运用可视化开发包(VTK),采用该算法对超声图像的肝脏肿瘤及周围组织器官(血管)进行了三维重建。实验结果表明:采用分割MC算法进行三维重建的速度均在20s以内,精度高,满足临床快速性及高精度要求。该方法已经在肝癌微创治疗中获得成功的临床应用。

关键词：三维重建分割MC(marching cubes)算法可视化工具包(VTK) 面绘制

Report for Ecosystem Approaches to the Better Management of Brucellosis and Toxoplasmosis in Yunnan Province, China

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Designing ultrastrong and thermally stable FeCrAl alloys with the fine-grained structure

第四届全国人畜共患病学术研讨会 2014年中国狂犬病年会中国畜牧兽医学会兽医公共卫生学分会第四次学术研讨会

作者： Huang Bizhi yang Guorong yang Shibiao yang xiangdong Li Wengui Yunnan Academe of Grasslands and Animal Science Yunnan Academy of Animal Science and Veterinary Yunnan Institute of Endemic Disease Control and Prevention Yunnan Agricultural University

This paper reports results of the ecohealth project implemented in Yunnan Province, China. The results through literature review show that, as a notifiable disease, prevalence of Brucellosis has been significantly increased in both animal and human since the period from 2003 to 2005, and ranked the 1 st of importance in zoonosis since 2007;and as a non-notifiable disease, prevalence of Toxoplasmosis has been increased in both animal and human, at both national and provincial *** retrospective investigation, in hospital for human health, total case files of 22,689 outpatients and inpatients were investigated, of which 511 abortion cases of kinds and 9 cases of premature delivery were identified, and 2 cases were confirmed as serologically positive for Toxoplasmosis. Total case files of 56,883 outpatients and inpatients, of which 1,103 cases with fever, 341 with fever for further detection, and 236 with fever over 5 days;and 118 cases with joint pain, headache and lymph node enlargement were identified, however, all cases were confirmed to be serologically negative for Brucellosis. A serological survey for prevalence of Brucellosis and Toxoplasmosis in outpatient suspect case during the period from 1 st Jul to 31 st Dec(2011) was carried out in Yiliang County and Mangshi City. The results showed that prevalence was zero for Brucellosis and 9.68%(3/31) for Toxoplasmosis in Yiliang County, and prevalence was zero for Brucellosis and 16.67%(5/30) for Toxoplasmosis in Mangshi City. A field survey including Questionnaire, IDI and FGD was carried out in the two project sites. Total 192 respondents participated in the questionnaire survey;47 respondents involved in IDI;and 17 meetings for FGD were held. Findings and conclusions concerning knowledge, attitude and behavior for zoonosis and public health were achieved through this field survey. Generally, these two indicator diseases are not listed in the most common animal diseases or zoonosis;knowledge of these two

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Journal of Materials Science & Technology 2024年第4期171卷 198-208页

作者： Shuaiyang Liu Jinyu Zhang Hui Wang Gang Liu xiangdong Ding Jun Sun State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China Science and Technology on Reactor Fuel and Materials Laboratory Nuclear Power Institute of ChinaChengdu 610041China

Designing microstructurally stable FeCrAl alloys with excellent strength-ductility synergy is highly desir-able for their engineering ***,due to the preference nucleation of precipitates at grain boundaries(GBs),the improved precipitation strengthening of these alloys is usually accompanied by in-tergranular ***,we propose a novel thermomechanical processing route coupled with the Si alloying strategy via precipitation of coherent deformable Laves precipitates inside equiaxed fine-grains to achieve FeCrAl alloys with ultrahigh yield strength over∼992 MPa,excellent uniform elongation of∼7.6%at room temperature,and superior thermal stability at temperature∼1200℃.The Si alloying not only decreases the stacking fault energy of Laves precipitates favorable for their stacking-fault-mediated deformation but also hinders grain coarsening at 1200℃due to the Si-enrichment favorable for GB pin-ning *** results prove the possibility of achieving the collaborative enhancement of mutually exclusive properties in alloys,such as strength-ductility-thermal stability via nanoprecipitation engineer-ing,and offer a promising route to prepare dispersion-strengthened materials.

关键词： FeCrAl alloys Si alloying Mechanical properties Thermal stability Laves phase

IoTDQ: An Industrial IoT Data Analysis Library for Apache IoTDB

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Big Data Mining and Analytics 2024年第1期7卷 29-41页

作者： Pengyu Chen Wendi He Wenxuan Ma xiangdong Huang Chen Wang School of Software Tsinghua UniversityBeijing 100084China National Engineering Research Center for Big Data Software(NERCBDS) Tsinghua UniversityBeijing 100084China

There is a growing demand for time series data analysis in industry *** loTDB is a time series database designed for the Internet of Things(loT)with enhanced storage and I/O *** User-Defined Functions(UDF)provided,computation for time series can be executed on Apache loTDB *** satisfy most of the common requirements in industrial time series analysis,we create a UDF library,loTDQ,on Apache *** library integrates stream computation functions on data quality analysis,data profiling,anomaly detection,data repairing,*** enables users to conduct a wide range of analyses,such as monitoring,error diagnosis,equipment reliability *** provides a framework for users to examine loT time series with data quality *** show that loTDQ keeps the same level of performance compared to mainstream alternatives,and shortens I/O consumption for Apache loTDB users.

关键词： industrial big data data quality data mining and analytics

High-performance asymmetric electrodes photodiode based on Sb/WSe2 heterostructure

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Nano Research 2019年第2期12卷 339-344页

作者： Xiao Liu Guangzhuang Sun Peng Chen Junchi Liu Zhengwei Zhang Jia Li Huifang Ma Bei Zhao Ruixia Wu Weiqi Dang xiangdong yang Chen Dai Xuwan Tang Zhuojun Chen Lili Miao Xingqiang Liu Bo Li Yuan Liu Xidong Duan Department of Applied Physics School of Physics and Electronics Hunan University Changsha 410082 China State Key Laboratory for Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University Changsha 410082 China

Two-dimensional (2D) van der Waals (vdWs) metal-semiconductor heterostructures with atomically sharp interface and matched work functions have recently attracted great attention due to their unique electronic and optoelectronic properties. Here we report the vapor phase epitaxial growth of large-scale vertical Sb/WSe2 metal-semiconductor vdWs heterostructures with uniform stacking orientation. Compared with the growth on S1O2/S1 substrate, the thick ness of Sb nan osheet on WSe2 can be reduced effectively to mono layer. We con struct Sb-WSe2-Au asymmetric electrodes photodiode based on the Sb/WSe2 heterostructures. Electrical transport measurements indicate that the photodiode show obvious rectifying effect. Optoelectronic characterizations show prominent photoresponse with a high photoresposivity of 364 mA/W, a fast response time of less than 8 ms, a large open-circuit voltage of 0.27 V and a maximum electrical power output of 0.11 nW. The direct growth of high-quality metal-semiconductor vdWs heterostructures may open up new realms in 2D functional electronics and optoelectronics.

关键词： two-dimensional asymmetric electrode photodiode van der Waals (vdWs) heterostructure optoelectronics

High-throughput calculation-based rational design of Fe-doped MoS_(2) nanosheets for electrocatalytic p H-universal overall water splitting

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Journal of Energy Chemistry 2024年第4期91卷 194-202页

作者： Guangtong Hai xiangdong Xue Zhenyu Wu Canyang Zhang Xin Liu Xiubing Huang Institute of Zhejiang University-Quzhou Zhejiang UniversityQuzhou 324000ZhejiangChina Beijing Key Laboratory of Membrane Materials and Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory of Function Materials for Molecule&Structure ConstructionSchool of Materials Science and EngineeringUniversity of Science and TechnologyBeijing 100083China CentreÉnergie Matériaux et Télécommunications(EMT) Institut national de la recherche scientifique(INRS)Varennes J3X1P7QuébecCanada

Electrocatalytic water splitting is crucial for H2generation via hydrogen evolution reaction(HER)but subject to the sluggish dynamics of oxygen evolution reaction(OER).In this work,single Fe atomdoped MoS_(2)nanosheets(SFe-DMNs)were prepared based on the high-throughput density functional theory(DFT)calculation *** to the synergistic effect between Fe atom and MoS_(2)and optimized intermediate binding energy,the SFe-DMNs could deliver outstanding activity for both HER and *** assembled into a two-electrode electrolytic cell,the SFe-DMNs could achieve the current density of 50 mA cm^(-2)at a low cell voltage of 1.55 V under neutral *** results not only confirmed the effectiveness of high-throughput screening,but also revealed the excellent activity and thus the potential applications in fuel cells of SFe-DMNs.

关键词： High-throughput calculation Overall water splitting Single atom doped catalyst Molybdenum disulfide nanosheet

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刚果红和结晶紫在锯末上的吸附性能研究

离子交换与吸附 2006年第2期22卷 134-139页

作者：詹予忠杨向东李玉博郑州大学化工学院郑州大学化工学院郑州450002

采用静态吸附法研究了刚果红和结晶紫在锯末上的吸附特性。结果表明,锯末是具有高脱色率的廉价吸附剂,最大脱色率可达96%。在pH4~10范围内,酸度对结晶紫的吸附影响较小,随着pH值增大,脱色率从96.6%缓慢降至91.1%。pH值对刚果红吸附影响... 详细信息

采用静态吸附法研究了刚果红和结晶紫在锯末上的吸附特性。结果表明,锯末是具有高脱色率的廉价吸附剂,最大脱色率可达96%。在pH4~10范围内,酸度对结晶紫的吸附影响较小,随着pH值增大,脱色率从96.6%缓慢降至91.1%。pH值对刚果红吸附影响较大,pH从4增大到7,脱色率迅速从22.5%增加至96.0%,然后,随pH值升高脱色率缓慢下降至91.4%。两种染料在锯末上的吸附等温线均较好的符合Freundlich方程,吸附动力学可以用拟二级动力学模型描述。计算了相应的吸附等温线参数和吸附动力学参数。

关键词：染料吸附锯末吸附等温线拟二级动力学