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国产MOCVD-YBCO带材高温超导线圈研制与磁场温度特性研究

火山作用与地球层圈演化——全国第四次火山学术研讨会

作者： Zhao Li~1 zhang Zhaochong~(1,2) Yan Shenghao~3 chen Bailin~4 Zhou Gang~5 HeYongkang~5 Chai Fengmei~2 He Lixin~5 1. State Key laboratory of geological Processes and Mineral Resources, china University of Geosciences, Beijing 100083 2. institute of Geology, chinese academy of geological sciences, Beijing 100037 3. institute of Mineral Resources, chinese academy of geological sciences, Beijing 100037 4. institute of geomechanics, chinese academy of geological sciences, Beijing 100081 5. No. 4 geological Party, Xinjiang Bureau of Geology and Resources, Aertai, Xinjiang

＜正＞ The Altay orogenic belt, Xinjiang Uygur Autonomous Region in NW china, represents one of the important sites of juvenile crustal growth during the Phanerozoic time. However, some important issues, e.g., tectonic evolution and petrogenesis, still remain controversial. Two layers of the picritic rocks in the south margin of the Altay orogenic belt, were discovered in the lower part of marine volcanic-sedimentary

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物理学报 2018年第6期67卷 250-257页

作者：丁发柱张京业谭运飞陈治友董泽斌张慧亮商红静许文娟张贺屈飞高召顺周微微古宏伟中国科学院电工研究所北京100190 中国科学院应用超导重点实验室北京100190 中国科学院大学北京100049 中国科学院强磁场科学中心合肥230031

超导磁体的场强与超导材料的载流能力、磁体口径和低温环境有密切关系.为了在中高温区域实现高磁场强度的超导磁体,采用国产第二代高温超导带材,成功绕制出内直径为1.0 mm的高温超导线圈.该超导线圈在77,65,55和46 K不同温区下进行了性... 详细信息

超导磁体的场强与超导材料的载流能力、磁体口径和低温环境有密切关系.为了在中高温区域实现高磁场强度的超导磁体,采用国产第二代高温超导带材,成功绕制出内直径为1.0 mm的高温超导线圈.该超导线圈在77,65,55和46 K不同温区下进行了性能测试,其最大运行电流分别为65,1.7,257和338 A,对应的中心磁场强度分别为0.78,1.77,3.1.4.08 T.所研制的超导线圈的中平面上磁场基本一致.

关键词：高温超导磁体钇钡铜氧带材

Magnetic survey and chinaGRF 2000

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Magnetic survey and ChinaGRF 2000

New potential barite reference materials for LA-MC-ICP-MS sulfur isotope analysis with application to hydrothermal barite in the Huayangchuan deposit， western{1.

中国科学院地质与地球物理研究所2003学术年会

作者： wen-Yao Xu~1.Guo-Hui Xia~1.Zhen-Chang An~1.Geng-Xiong {1.~1.Feng-Yu zhang~1.Yue-Hua Wang~1. Yu-Gang Tian~1.Zi-Gang Wei~1.Shi-Zhuang Ma~2,and Hong-Fei {1.~3 1.institute of Geology and Geophysics,chinese academy of sciences,Beijing.china 2 Graduate School,chinese academy of sciences,Beijing,china 3 Peking University,Beijing,china

The magnetic survey in china carried out in resent years is briefly *** the basis of the magnetic data at 1.9 repeat stations,39 permanent observatories and 20 grid values of the IGRF 2000,the magnetic charts and mode... 详细信息

关键词： Magnetic survey Magnetic chart chinaGRF

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Journal of Earth Science 2024年

作者： Jiali Fu Xinqian He Zhaochu Hu Shuo Yin Jian Ma Kaiyun chen {1. zhang National Key Laboratory of Prospecting， Mining and Remote Sense Detecting on Uranium Resources， East china University of Technology State Key Laboratory of Nuclear Resources and Environment， East china University of Technology School of Earth sciences， East{1. University of Technology State Key Laboratory of geological Processes and Mineral Resources，{1. University of Geosciences Wuhan State Key Laboratory of Continental Dynamics， Department of Geo logy， Northwest University

Sulfur isotopes of S-bearing materials are powerful tools to trace various geological processes and sulfur sources in earth {1.， especially in ore deposits where sulfide-sulfate pair coprecipitates widely. However， in-situ S isotope determination of barite is challenging without natural matrix-matched reference material. In this study， we present two natural barite reference materials （1.YS and 294-YS） for in-situ sulfur isotopic analysis. Independent LA-MC-ICP-MS laboratories were utilized to test the δ34S micron-scale homogeneity of 1.YS and 294-YS barites that have 2s repeatabilities of better than ±0.45 ‰ and ±0.41.‰， respectively. Meanwhile， the in-situ analysis results are consistent with the results of the bulk analysis by GS-IRMS within uncertainty. The grand mean δ34S values of 1.YS （1..37‰ ± 0.42 ‰， 2s） and 294-YS （1..38‰ ± 0.44 ‰， 2s） are the final recommended values obtained from four independent laboratories. All the results confirm the suitability of 1.YS and 294-YS barite used as calibration materials with respect to in-situ S isotopic analysis. Moreover， the new developed barite reference materials were used as matrix-matched standard to calibrate the barite samples from the Huayangchuan carbonatite-hosted U-polymetallic deposit （Qinling orogenic belt， western china） to obtain δ34S values. Utilizing the temperature-dependent δ34S fractionation of barite-pyrite pair， we calculate the formation temperature of barite （i.e.， 506 to 537 ℃） and the δ34S value of mineralizing fluid （i.e.， -7.1.‰ to -7.59 ‰） in the Huayangchuan deposit. The results indicate an involvement of sedimentary sulfur， presumably acting as a potential uranium source （e.g.， upper crustal materials） for the giant Huayangchuan deposit.

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LDA抽运Nd∶YLF再生放大器的实验研究

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中国激光 2003年第8期30卷 677-680页

作者：韦辉张生佳许世忠马忠林沈磊曾文章陈绍和中国科学院上海光学精密机械研究所泉州师范学院物理系中国科学院上海光学精密机械研究所上海201.00 福建泉州362000

研制了一台激光二极管列阵 (LDA)抽运的Nd∶YLF再生放大器。再生放大器工作波长 1.0 5 3nm ,重复频率 1.z,输出 4ns宽基横模TEM0 0 激光脉冲的能量为 2mJ。总放大倍数达到了 1. 1.0 7,输出能量稳定性优于± 4 7%(峰值 )。给出了再生放... 详细信息

研制了一台激光二极管列阵 (LDA)抽运的Nd∶YLF再生放大器。再生放大器工作波长 1.0 5 3nm ,重复频率 1.z,输出 4ns宽基横模TEM0 0 激光脉冲的能量为 2mJ。总放大倍数达到了 1. 1.0 7,输出能量稳定性优于± 4 7%(峰值 )。给出了再生放大器的实验装置和有关实验结果

关键词：激光技术再生放大多程放大激光二极管列阵

激光二极管列阵抽运的高稳定Nd∶YLF环形激光器

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中国激光 2004年第1期31卷 5-8页

作者：韦辉许世忠马忠林张生佳沈磊曾文章陈绍和中国科学院上海光学精密机械研究所泉州师范学院物理系中国科学院上海光学精密机械研究所上海201.00 福建泉州362000

成功研制了一台激光二极管列阵 (LDA)抽运的高稳定Nd∶YLF环形激光器。用输出激光强度负反馈控制谐振腔的增益 ,建立了准连续的～ 1. 0 μs宽预激光状态 ,然后在此预激光基础上调Q。由于预激光模式与谐振腔固有模式一致并且具有一定强... 详细信息

成功研制了一台激光二极管列阵 (LDA)抽运的高稳定Nd∶YLF环形激光器。用输出激光强度负反馈控制谐振腔的增益 ,建立了准连续的～ 1. 0 μs宽预激光状态 ,然后在此预激光基础上调Q。由于预激光模式与谐振腔固有模式一致并且具有一定强度 ,调Q脉冲的建立时间和幅度都很稳定。实验结果为 :输出调Q脉冲强度起伏不超过4 3% ,时间抖动小于± 4ns。

关键词：激光技术环形激光器负反馈预激光精密同步激光二极管列阵

Association analysis of an anti-obesity mechanism and key ripened Pu-erh tea bioactive components by mimicking human general tea drinking

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Food Science and Human Wellness 2024年

作者： Junyu Liu Zhengyang Song Haihong {1. wen Zeng Guirong Han Wei Li Bing Xu Yuan Lu Canyang zhang Zhenglian Xue Bin Lü Chong zhang Song yang Yi Wang Xinhui Xing institute of Biomedical Health Technology and Engineering Shenzhen Bay Laboratory MOE Key Laboratory for Industrial Biocatalysis， Centre for Synthetic and Systems Biology， Department of Chemical Engineering， Tsinghua University Shenzhen International Graduate School， Tsinghua University Shandong Province Key Laboratory of Applied Mycology， Qingdao International Center on Microbes Utilizing Biogas， School of Life sciences， Qingdao Agricultural University Anhui University of Technology Yunnan Shujian Tea Co.， Ltd.

Pu-erh tea， a traditional chinese beverage， performs an anti-obesity function， but the correlation between its components and efficacy remains unknown. Here， we screened two Pu-erh teas with significant anti-obesity efficacies from 1. teas. In vitro experiments revealed that lipid accumulation in L02 cells and lipid synthesis in 3T3-L1.cells were significantly better inhibited by Tea-B than Tea-A. Further in vivo experiments using model mice revealed that the differences in chemical components generated two pathways in the anti-obesity efficacy and mechanism of Pu-erh teas. Tea-A changes the histomorphology of brown adipose tissue (BAT) and increases the abundance of Coriobacteriaceae＿UCG＿002 and cyclic AMP in guts through high chemical contents of cyclopentasiloxane， decamethyl， tridecane and 1.2，3-trimethoxybenzene， eventually increasing BAT activation and fat browning gene expression; the high content of hexadecane and 1.2-dimethoxy-benzene in Tea-B reduces white adipose tissue (WAT) accumulation and the process of fatty liver， increases the abundance of Odoribacter and sphinganine 1.phosphate， inhibits the expression of lipid synthesis and transport genes. These mechanistic findings on the association of the representative bioactive components in Pu-erh teas with the anti-obesity phenotypes， gut microbes， gut metabolite structure and anti-obesity pathways， which were obtained for the first time， provide foundations for developing functional Pu-erh tea.

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Temperate Stutzerimonas Phage Encoding Toxin-Antitoxin System Genes Represents a Novel Genus

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Journal of Ocean University of china 2024年第4期23卷 1087-1101页

作者： zhang Hong GUO Ruizhe GAO {1. ZHENG Kaiyang XIONG Yao DONG Yue LIU Yundan WANG Ziyue {1. Ying WANG Hongmin SHAO Hongbing SUNG Yeong Yik MOK wen Jye WONG Li Lian MCMINN Andrew WANG Min LIANG Yantao College of Marine Life sciences Institute of Evolution and Marine BiodiversityMOE Laboratory of Evolution and Marine BiodiversityFrontiers Science Center for Deep Ocean Multispheres and Earth SystemCenter for Ocean Carbon NeutralityOcean University of ChinaQingdao 266003China UMT-OUC Joint Center for Marine Studies Qingdao 266003China institute of Marine Biotechnology Universiti Malaysia Terengganu21030 Kuala TerengganuMalaysia institute for Marine and Antarctic Studies University of TasmaniaHobartTAS 7001Australia Haide College Ocean University of ChinaQingdao 266100China The Affiliated Hospital of Qingdao University Qingdao 266001China

Stutzerimonas have been extensively studied due to their remarkable metabolic and physiological ***,research on its phages is currently *** this study,we isolated a novel double-stranded DNA(dsDNA)phage,vB_SstM-PG1.from the marine environment that infects Stutzerimonas stutzeri *** dsDNA genome is 37204 bp long with a G/C content of 64.1.%and encodes 54 open reading *** phage possesses a tail packaging structure that is different from known Stutzerimonas stutzeri phages and exhibits structural protein characteristics similar to those of temperate *** addition,two genes of toxin-antitoxin system,including YdaS_antitoxin and HEPN_SAV_61.7,were found in the vB_SstM-PG1.genome and play important roles in regulating host growth and *** phylogenetic tree and comparative genomic analysis,it has been determined that vB_SstM-PG1.is not closely related to any phages previously identified in the GenBank ***,it has a connection with enigmatic,uncultured ***,the vB_SstM-PG1.virus exhibits an average nucleotide identity of over 70%with six uncultivated viruses identified in the IMG/VR v4 *** significant finding has resulted in the identification of a novel viral genus known as Metabovirus.

关键词： Stutzerimonas vB_SstM-PG1 Metabovirus temperate phage genomic and phylogenetic analysis

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移动机器人视觉里程计综述

自动化学报 2018年第3期44卷 385-400页

作者：丁文东徐德刘希龙张大朋陈天中国科学院自动化研究所精密感知与控制研究中心北京100190 中国科学院大学北京101408 天津中科智能技术研究院有限公司天津300300

定位是移动机器人导航的重要组成部分.在定位问题中,视觉发挥了越来越重要的作用.本文首先给出了视觉定位的数学描述,然后按照数据关联方式的不同介绍了视觉里程计(Visual odometry,VO)所使用的较为代表性方法,讨论了提高视觉里程计鲁... 详细信息

定位是移动机器人导航的重要组成部分.在定位问题中,视觉发挥了越来越重要的作用.本文首先给出了视觉定位的数学描述,然后按照数据关联方式的不同介绍了视觉里程计(Visual odometry,VO)所使用的较为代表性方法,讨论了提高视觉里程计鲁棒性的方法.此外,本文讨论了语义分析在视觉定位中作用以及如何使用深度学习神经网络进行视觉定位的问题.最后,本文简述了视觉定位目前存在的问题和未来的发展方向.

关键词：视觉里程计视觉定位位姿估计导航移动机器人

The differential effects of integrase strand transfer inhibitors and efavirenz on neuropsychiatric conditions and brain imaging in HIV-positive men who have sex with men

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Biosafety and Health 2024年第4期6卷 216-224页

作者： Yihui He yang {1. Jiaxin Zhen Guangqiang Sun Zhen Li Bo yang Bin yang Keyi Chang Xue chen Yulin {1. Caiping Guo wen Wang Ping Wu Tong {1. Lei Wang Postgraduate Union Training Base of Jinzhou Medical University PLA Rocket Force Characteristic Medical CenterBeijing 100088China Department of Neurology PLA Rocket Force Characteristic Medical CenterBeijing 100088China Center for Infectious Disease Beijing Youan HospitalCapital Medical UniversityBeijing 100069China Beijing Key Laboratory for HIV/AIDS Research Beijing 100069China Beijing institute for Sexually Transmitted Disease Control Beijing 100069China Beijing Key Laboratory of Mental Disorders National Clinical Research Center for Mental Disorders and National Center for Mental DisordersBeijing Anding HospitalCapital Medical UniversityBeijing 100088China Advanced Innovation Center for Human Brain Protection Capital Medical UniversityBeijing 100069China The Second Hospital of Beijing Beijing 100031China Department of Respiratory and Critical Care Medicine Beijing Youan HospitalCapital Medical UniversityBeijing 100069China National institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Peking UniversityBeijing 100191China Key Discipline for Neuroscience of the Ministry of Education Department of NeurobiologySchool of Basic Medical SciencesPeking University Health Science CenterBeijing 100191China

Integrase strand transfer inhibitors(INSTIs)have emerged as the first‐line choice for treating human immunodeficiency virus(HIV)infection due to their superior efficacy and ***,the impact of INSTIs on the development of neuropsychiatric conditions in people living with HIV(PLWH)is not fully understood due to limited *** this study,we conducted a cross‐sectional examination of PLWH receiving antiretroviral therapy,with a specific focus on HIV‐positive men who have sex with men(MSM)on INSTI‐based regimens(n=61.and efavirenz(EFV)‐based regimens(n=28).Participants underwent comprehensive neuropsychiatric evaluations and multimodal magnetic resonance imaging(MRI)scans,including T1.weighted images and resting‐state functional *** to the EFV group,the INSTI group exhibited primarily reduced gray matter volume(GMV)in the right superior parietal gyrus,higher regional homogeneity(ReHo)in the left postcentral gyrus,lower ReHo in the right orbital part of the inferior frontal gyrus,and increased voxel‐wise functional connectivity for the seed region in the left inferior temporal gyrus with clusters in the right ***,the analysis revealed a main effect of antiretroviral drugs on GMV changes,but no main effect of neuropsychiatric disorders or their *** repeated analysis of participants who did not switch regimens confirmed the GMV changes in the INSTI group,validating the initial *** study demonstrated gray matter atrophy and functional brain changes in PLWH on INSTI‐based regimens compared to those on EFV‐based *** neuroimaging results provide valuable insights into the characteristics of brain network modifications in PLWH receiving INSTI‐based regimens。

关键词： Human immunodeficiency virus(HIV) Multimodal magnetic resonance imaging(MRI) Integrase strand transfer inhibitors(INSTIs) Efavirenz(EFV)