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Rare Metals 2023年第12期42卷 3977-3984页

作者： Peng-Tao Cheng Zhao Zhang Xu-Cai Kan Cheng-Liang Zhang Zheng-Ming Zhang Bing Li dun-Hui wang Division of Microelectronic Materials and Devices Hangzhou Dianzi UniversityHangzhou 310018China National Laboratory of Solid State Microstructures and Department of Physics Nanjing UniversityNanjing 210093China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China School of Materials Science and Engineering Anhui UniversityHefei 230601China Engineering Technology Research Center of Magnetic Materials School of Physics and Materials ScienceAnhui UniversityHefei 230601China

The barocaloric effect(BCE)is a promising alternative to traditional vapor compressing refrigeration because of its environmentally friendly impact and high energy efficiency.However,the driving hydrostatic pressure for most BCE materials is relatively high,which is not conducive to practical application.In this paper,we report that the large barocaloric entropy change of MnAs_(0.94)Sb_(0.06)alloy can be induced by low hydrostatic pressures.Its phase transition temperature is strongly sensitive to the applied pressure,resulting in a large barocaloric coefficient of 134 K·GPa^(-1)on cooling and 126 K·GPa^(-1)on heating.The maximum barocaloric entropy change and adiabatic temperaturechange resulted from hydrostatic pressure of 40 MPa reach up to 26.3 J·kg^(-1)·K^(-1)and 14.4 K,respectively,showing an excellent barocaloric performance.The results demonstrate that the MnAs_(0.94)Sb_(0.06)alloy is a promising alternative for BCE refrigeration.

关键词： alloy hydrostatic

Correction to: Advances in BeiDou Navigation Satellite System (BDS) and satellite navigation augmentation technologies

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Satellite Navigation 2020年第1期1卷 149-150页

作者： Rui Li Shuaiyong Zheng Ershen wang Jinping Chen Shaojun Feng dun wang Liwen Dai School of Electronic and Information Engineering Beihang UniversityNo.37 Xueyuan RoadHaidian DistrictBeijingChina Suzhou Institute Beihang UniversitySuzhou 215200China College of Electronic and Information Engineering Shenyang Aerospace UniversityNo.37 Daoyi South StreetDaoyi DistrictShenyangChina Beijing Satellite Navigation Center No.22 Beiqing RoadHaidian DistrictBeijingChina Qianxun Spatial Intelligence Inc. C5 BuildingNo.1688-38 North Guoquan RoadYangpu DistrictShanghaiChina Space Star Technology Co. Ltd.Blue Lake Industry ParkHaidian DistrictBei-jingChina John Deere-Intelligent Solution Group 20780 Madrona AvenueTorranceCAUSA

Correction to:Satell Navig(2020)1:12 https://***/10.1186/s43020-020-00010-2 In the original publication of this article(Li et al.2020),there are several corrections as below:1.In the first paragraph of this article,the sentence“In recent years,China has been actively promoting the con-struction and development of the BeiDou Navigation Sat-ellite System(BDS),and by the end of the year 2000 the construction of BDS-1 was complete and BDS-1 began to provide GPS services for China.”should be changed into“In recent years,China has been actively promoting the construction and development of the BeiDou Navigation Satellite System(BDS),and by the end of the year 2000 the construction of BDS-1 was completed and BDS-1 began to provide services for China.”The word“GPS”should be removed.

关键词： China. BeiDou BDS

Genetic variant reanalysis reveals a case of Sandhoff disease with onset of infantile epileptic spasm syndrome

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Acta Epileptologica 2024年第1期7卷 67-73页

作者： Qi Zhang Liping Zou Qian Lu Qiuhong wang Shuo dun Jing wang Medical School of Chinese PLA Beijing100853China Department of Pediatrics the First Medical Center of PLA General HospitalBeijing100853China

Background Sandhoff disease(SD)i s an autosomal recessive lysosomal disease with clinical manifestations such as epilepsy,psychomotor retardation and developmental delay.However,infantile SD with onset of infantile epilepsy spasm syndrome(IESS)is extremely rare.Case presentation The case presented here was a 22-month-old boy,who presented with IESS and psychomotor retardation/regression at 6 months of age.The patient showed progressive aggravation of seizures and excessive startle responses.The whole exome sequencing data,which initially revealed negative results,were reanalyzed and indicated a homozygous mutation at the c.1613+4del splice site of the HEXB gene.The activities ofβ-hexosaminidase A and total hexosaminidase were significantly decreased.The fundus examination showed cherry red spots at the macula.Conclusions IESS can be an epileptic phenotype of infantile SD.Clinical phenotypes should be adequately collected in genetic testing.In the case of negative sequencing results,gene variant reanalysis can be performed when the patients show clinically suspicious indications.

关键词： Infantile Sandhoff disease Gene variant reanalysis HEXB gene Infantile epilepsy spasm syndrome Cherry red spot Human phenotype ontology

Formation and ecological response of sand patches in the protection system of Shapotou section of the Baotou-Lanzhou railway,China

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Journal of Arid Land 2024年第2期16卷 298-313页

作者： dun Yaoquan QU Jianjun KANG Wenyan LI Minlan LIU Bin wang Tao SHAO Mei Key Laboratory of Desert and Desertification Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China College of Urban and Environmental Sciences Northwest UniversityXi'an 710100China Zhongwei Works Section of China Railway Lanzhou Bureau Group Company Limited Zhongwei 755000China

The development of bare patches typically signifies a process of ecosystem degradation.Within the protection system of Shapotou section of the Baotou-Lanzhou railway,the extensive emergence of bare sand patches poses a threat to both stability and sustainability.However,there is limited knowledge regarding the morphology,dynamic changes,and ecological responses associated with these sand patches.Therefore,we analyzed the formation and development process of sand patches within the protection system and its effects on herbaceous vegetation growth and soil nutrients through field observation,survey,and indoor analysis methods.The results showed that sand patch development can be divided into three stages,i.e.,formation,expansion,and stabilization,which correspond to the initial,actively developing,and semi-fixed sand patches,respectively.The average dimensions of all sand patch erosional areas were found to be 7.72 m in length,3.91 m in width,and 0.32 m in depth.The actively developing sand patches were the largest,and the initial sand patches were the smallest.Throughout the stage of formation and expansion,the herbaceous community composition changed,and the plant density decreased by more than 50.95%.Moreover,the coverage and height of herbaceous plants decreased in the erosional area and slightly increased in the depositional lobe;and the fine particles and nutrients of soils in the erosional area and depositional lobe showed a decreasing trend.In the stabilization phases of sand patches,the area from the inlet to the bottom of sand patches becomes initially covered with crusts.Vegetation and 0-2 cm surface soil condition improved in the erosional area,but this improvement was not yet evident in the depositional lobe.Factors such as disturbance,climate change,and surface resistance to erosion exert notable influences on the formation and dynamics of sand patches.The results can provide evidence for the future treatment of sand patches and the management of the protection system of Shapotou section of the Baotou

关键词： railway protection system sand patch morphology vegetation characteristic soil property

Time synchronization and ranging under unknown positions and velocities

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Science China(Technological Sciences) 2017年第2期60卷 271-281页

作者： GU XiaoBo CHANG Qing XU Yong wang dun School of Electronic & Information Engineering Beihang University Space Star Technology Co. Ltd

The process to achieve time synchronization and ranging for a network of mobile nodes is raising a concern among researchers, and hence a variety of joint time synchronization and ranging algorithms have been proposed in recent years. However, few of them handle the case of all-node motion under unknown positions and velocities. This study addresses the problem of determining ranging and time synchronization for a group of nodes moving within a local area. First, we examined several models of clock discrepancy and synchronous two-way ranging. Based upon these models, we present a solution for time synchronization with known positions and velocities. Next, we propose a functional model that jointly estimates the clock skew, clock offset, and time of flight in the absence of a priori knowledge for a pair of mobile nodes. Then, we extend this model to a network-wide time synchronization scheme by way of a global least square estimator. We also discuss the advantages and disadvantages of our model compared to the existing algorithms, and we provide some applicable scenarios as well. Finally, we show that the simulation results verify the validity of our analysis.

关键词：时间同步测距算法速度位置最小二乘估计移动节点功能模型时钟偏差

使用欧洲、中国、日本和澳大利亚4个台阵由反投影方法确定的2015年4月25日尼泊尔M_W7.8地震的短周期能量

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国际地震动态 2016年第5期37卷 9-18页

作者： dun wang Jim Mori 杨国栋 Earthquake Research Institute University of Tokyo Disaster Prevention Research Institute Kyoto University 甘肃省地震局

应用反投影（backprojection）分析方法确定了2015年尼泊尔地震产生的短周期（0.5~5s）能量的震源位置和时间。使用欧洲、中国、日本和澳大利亚不同方位的不同台阵的数据,这些数据在破裂传播方面表现出一致的特性。发震后的25~55s,强短... 详细信息

应用反投影（backprojection）分析方法确定了2015年尼泊尔地震产生的短周期（0.5~5s）能量的震源位置和时间。使用欧洲、中国、日本和澳大利亚不同方位的不同台阵的数据,这些数据在破裂传播方面表现出一致的特性。发震后的25~55s,强短周期能量震源分布在震中以东10~100km内。前20s破裂速度约1.0km/s,而在其后的30~40s加速到~3.0km/s。短周期能量震源位置接近于断层下倾边缘,它补充了更靠上发生的大断裂滑动区域。尼泊尔地震可能是大断层滑动区域与短周期能量震源区域不一致的另一个实例,这可能与破坏性强地震动有关。在线材料：使用4个不同台阵对尼泊尔地震进行反投影的动画演示。

关键词：反投影台阵 M_W7.8 震源位置破裂速度断层滑动破裂传播动画演示区域边界波形记录

Vere-Jones分枝破裂模型和震源过程的相似之处(英文)

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Vere-Jones分枝破裂模型和震源过程的相似之处(英文)

基于AHP的海南岛生态地质环境质量综合评价与分析

2014年中国地球科学联合学术年会——专题12：强震机理、孕育环境与地震活动性分析

作者： Jiancang Zhuang dun wang Mitsuhiro Matsuura Institute of Statistical Mathematics 10-3 Midori-choTachikawa Tokyo 190-8562 Japan Earthquake Research Institute University of Tokyo1-1-1YayoiBunkyo-kuTokyo 113-0032Japan

Vere-Jones’branching crack model was developed in 1970s.In this model,the earthquake source is regarded as the result from the total population of crack elements in a critical or near-critical bran

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环境生态学 2024年第3期6卷 33-43页

作者：王顿杨秀玖李习文寇磊张士友刘强唐翠青中国地质调查局海口海洋地质调查中心海南海口570100

为判定海南岛总体生态地质环境脆弱性与生态适宜性,在对前人研究总结和对海南岛的生态地质环境特征分析的基础上,从生态要素、地质要素、地理要素、人为要素4个方面选取了湿润指数、地层岩性、地貌、土地利用、人口密度类型等12个主要... 详细信息

为判定海南岛总体生态地质环境脆弱性与生态适宜性,在对前人研究总结和对海南岛的生态地质环境特征分析的基础上,从生态要素、地质要素、地理要素、人为要素4个方面选取了湿润指数、地层岩性、地貌、土地利用、人口密度类型等12个主要影响要素,构建了海南岛生态地质环境质量综合评价模型。运用层次分析法(AHP)计算各要素的权重,利用ArcGIS软件对其叠加计算得到综合评价结果,并利用自然间断分级法将结果按优、良、中、差划分为4个评价分区。结果表明:海南岛总体的生态地质环境质量较好,同时基于空间相关性分析,各评价分区在区域尺度上存在一定的空间相关性。其中生态地质环境质量优良区占15%,良好区占59%,中等区占22%,较差区占4%。通过综合评价可以较客观地认识海南岛的生态地质环境质量状况,同时基于此为各个分区制定了与该区域环境承载能力相适应的经济发展模式以及生态地质环境保护措施。可为海南岛的国土空间管控、生态环境保护等方面提供参考。

关键词：海南岛生态地质环境层次分析法 ArcGIS 空间相关性

Albert Einstein, Physics and Life—Interview with Prof.C.N.Yang

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自然科学史研究 2005年第B7期24卷 117-131页

作者： dun Liu Haoqiang wang Institute for the History of Natural Science CAS Beijing 100010 China

On the morning of April 14, 2005, Dr.C.N.Yang, Nobel Laureate in Physics, accepted our interview in his office at the Center for Advanced Study, Tsinghua University. The interview was two hours in duration and covered a variety of questions including Prof.Yang’s personal experience, Nobel Prizes, Einstein’s contributions and legacies, World Year of Physics, Prof.Yang’s fundamental views about physics, his comment on and outlook for many hot questions, and his expectations of the young. The interview, originally conducted in Chinese but later translated into English, has resulted in the publication of this article. The title of the article and subtitles of the succeeding paragraphs were added by the interviewers. The content below and any possible errors thereof are the interviewers’ responsibility.

关键词：爱因斯坦相对论物理学科学研究