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Lead-free(Ba,Sr)TiO_(3)-based ceramics with superior tunable properties by the semi-solution method

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Journal of Advanced Ceramics 2024年第6期13卷 746-756页

作者： Yi Zhao Wenfeng liu Dongsheng Ran Yihang Jin Zhiyuan li Chengzhi Zhong fanyi Kong Shengtao li State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong UniversityXi’an 710049China Jiaxing Electric Power Company State Grid Zhejiang Electric Power Co. Ltd.Jiaxing 314000China

High-performance dielectric tunable materials with both high dielectric tunability and low dielectric loss are urgently needed for new-generation electronic tunable *** the present study,a new system,(Ba_(0.675)Sr_(0.325))_(1−x)La_(x)Ti_(1−x)MnxO_(3)(x=0.25%,0.5%,0.75%,and 1.0%),was *** acceptor dopant Mn was added to lower dielectric loss,while the donor dopant La was introduced to enhance dielectric *** samples were prepared using the conventional solid-state(CS)reaction method and the semi-solution(SS)*** experimental results showed that the morphology of the ceramics was optimized by further improving the processing *** microstructures,homogeneous grains,and uniform dopant distributions could be achieved successfully by the semi-solution ***,a significant enhancement in the tunable properties was realized owing to the improved microstructure mentioned *** optimum tunable properties occurred in the samples prepared by the semi-solution method at x=0.75%,with a high dielectric tunability of 85.0%,a low dielectric loss of 0.0011,and an excellent figure of merit(FOM)of *** tunable properties of(Ba,Sr)TiO_(3)(BST)ceramics were even superior to those of lead-based materials,with an FOM of approximately *** the results suggested that the semi-solution method rendered BST ceramics more promising for applications in tunable devices.

关键词： microstructure tunable properties (Ba,Sr)TiO_(3)(BST)ceramics semi-solution(SS)method

Adaptive fusion of structure and attribute guided polarized communities search

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Frontiers of Computer Science 2024年第1期18卷 255-257页

作者： fanyi YANG Huifang MA Wentao WANG Zhixin li liang CHANG College of Computer Science and Engineering Northwest Normal UniversityLanzhou 730070China Key Lab of Education Blockchain and Intelligent Technology(Ministry of Education) Guangxi Normal UniversityGuilin 541004China Guangxi Key Laboratory of Trusted Software Guilin University of Electronic TechnologyGuilin 541004China

1 Introduction and main contributions The exploration of polarized communities,which consist of two antagonistic subgraphs and include a set of query nodes,is a crucial task in community search on signed *** existing methods either predominantly rely on topological structure while disregarding node attributes or tend to prioritize the global identification of all polarized ***,they fail to consider two crucial ***,integrating node attributes with network structure can enhance the search quality for polarized communities in attributed signed networks by leveraging complementary ***,global criteria-based polarized community detection aims to identify all polarized communities,neglecting personalized analyses centered around individual users.

关键词： polarized structure integrating

Reliability evaluation of IGBT power module on electric vehicle using big data

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Journal of Semiconductors 2024年第5期45卷 50-60页

作者： li liu Lei Tang Huaping Jiang fanyi Wei Zonghua li Changhong Du Qianlei Peng Guocheng Lu The School of Electrical Engineering Chongqing UniversityChongqing 400044China The Deepal Automobile Technology Co. Ltd.Chongqing 400023China

There are challenges to the reliability evaluation for insulated gate bipolar transistors(IGBT)on electric vehicles,such as junction temperature measurement,computational and storage *** this paper,a junction temperature estimation approach based on neural network without additional cost is proposed and the lifetime calculation for IGBT using electric vehicle big data is *** direct current(DC)voltage,operation current,switching frequency,negative thermal coefficient thermistor(NTC)temperature and IGBT lifetime are *** the junction temperature(T_(j))is *** the rain flow counting method,the classified irregular temperatures are brought into the life model for the failure *** fatigue accumulation method is then used to calculate the IGBT *** solve the limited computational and storage resources of electric vehicle controllers,the operation of IGBT lifetime calculation is running on a big data *** lifetime is then transmitted wirelessly to electric vehicles as input for neural *** the junction temperature of IGBT under long-term operating conditions can be accurately estimated.A test platform of the motor controller combined with the vehicle big data server is built for the IGBT accelerated aging ***,the IGBT lifetime predictions are derived from the junction temperature estimation by the neural network method and the thermal network *** experiment shows that the lifetime prediction based on a neural network with big data demonstrates a higher accuracy than that of the thermal network,which improves the reliability evaluation of system.

关键词： IGBT junction temperature neural network electric vehicles big data

Effects of donor cells on in vitro development of cloned bovine embryos

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Journal of Genetics and Genomics 2008年第5期35卷 273-278页

作者： Jing Fu Pengfei Guan Leiwen Zhao Hua li Shuzhen Huang fanyi Zeng Yitao Zeng Shanghai Institute of Medical Genetics Shanghai Children＇s Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200040 China

The donor cells from different individuals and with different foreign genes introduced were investigated to determine their effects on the efficiency of somatic cell nuclear transfer （SCNT）. The bovine ear fibroblast from different individuals was isolated, cultured, and then transfected with foreign genes to establish the stable cell lines, which were used as donor cells for nuclear transfer. The oocytes were obtained through ovum pick up operation. After in vitro maturation, the M II phase oocytes were selected as receptors for nuclear transfer. The reconstructed embryos were cultured in vitro and observed at 2 h, 48 h, and 7 days after transfer to assess the rate of fusion using cleaved and blastocyst as the parameters of SCNT efficiency. The donor cells from different individuals （04036, 06081, 06088, and 06129） had no obvious effect on the fusion and cleaved rate, whereas there was significant difference in the blastocyst rate （P〈0.05）, and the rate was 62.3%, 37.0%, 35.1%, and 15.6%, respectively. There was no significant difference among the rate of fusion, cleaved and blastocyst in donor cells with different foreign genes （P〉0.05）. It was concluded that the genetic background of the donor cells could affect the efficiency of SCNT, while the introduction of foreign genes into the donor cells had no obvious effect on the efficiency. This study provides useful information for the SCNT and would benefit in promoting the efficiency.

关键词： donor cell bovine somatic nuclear transfer transgene

《中图法》第四版“中国地区表”存在的问题及改进建议

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四川图书馆学报 1999年第6期 63-65页

作者：李芳懿中国煤炭经济学院山东烟台264005

文章通过实例，对《中图法》第四版“中国地区表”中存在的重要问题进行了评议，

关键词：中国地区表中图法第四版分类法图书分类

Human Expansion-Induced Biodiversity Crisis over Asia from 2000 to 2020

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Research 2024年第2期2023卷 647-658页

作者： Chao Yang Qingquan li Xuqing Wang Aihong Cui Junyi Chen Huizeng liu Wei Ma Xuanyan Dong Tiezhu Shi fanyi Meng Xiaohu Yan Kai Ding Guofeng Wu MNR Key Laboratory for Geo-Environmental Monitoring of Great Bay Area&Guangdong Key Laboratory of Urban Informatics&Shenzhen Key Laboratory of Spatial Smart Sensing and Services Shenzhen UniversityShenzhen 518060China School of Architecture and Urban Planning Shenzhen UniversityShenzhen 518060China College of Civil and Transportation Engineering Shenzhen UniversityShenzhen 518060China Guangdong Laboratory of Artificial Intelligence and Digital Economy(SZ) Shenzhen 518107China Center for Hydrogeology and Environmental Geology China Geological SurveyBaoding 071051China Department of Geography Hong Kong Baptist UniversityHong Kong Special Administrative Region 999077China Faculty of Land Resource Engineering Kunming University of Science and TechnologyKunming 650093China institute for Advanced Study and Tiandu-Shenzhen University Deep Space Joint Laboratory Shenzhen UniversityShenzhen 518060China School of Civil Engineering Chongqing Jjiaotong UniversityChongging 400074China Department of Cil and Environmental Engineering Tohoku UniversitySendai 980-8579Japan School of Artificial Intelligence Shenzhen PolytechnicShenzhen 518055China School of Computer Science and Technology Dongguan University of TechnologyDongguan 523419China

Asia stands out as a priority for urgent biodiversity conservation due to its large protected areas(PAs)and threatened *** the 21st century,both the highlands and lowlands of Asia have been experiencing the dramatic human ***,the threat degree of human expansion to biodiversity is poorly ***,the threat degree of human expansion to biodiversity over 2000 to 2020 in Asia at the continental(Asia),national(48 Asian countries),and hotspot(6,502 Asian terrestrial PAs established before 2000)scales is investigated by integrating multiple large-scale *** results show that human expansion poses widespread threat to biodiversity in Asia,especially in Southeast Asia,with Malaysia,Cambodia,and Vietnam having the largest threat degrees(~1.5 to 1.7 times of the Asian average level).Human expansion in highlands induces higher threats to biodiversity than that in lowlands in one-third Asian countries(most Southeast Asian countries).The regions with threats to biodiversity are present in~75%terrestrial PAs(including 4,866 PAs in 26 countries),and human expansion in PAs triggers higher threat degrees to biodiversity than that in *** findings provide novel insight for the Sustainable Development Goal 15(SDG-15 life on Land)and suggest that human expansion in Southeast Asian countries and PAs might hinder the realization of *** reduce the threat degree,Asian developing countries should accelerate economic transformation,and the developed countries in the world should reduce the demands for commodity trade in Southeast Asian countries(i.e.,trade leading to the loss of wildlife habitats)to alleviate human expansion,especially in PAs and highlands.

关键词： Human terrestrial integrating

A rapid late Holocene lake ecosystem shift driven by climate change:evidence from the first cladoceran record from an alpine lake in northern China

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Science Bulletin 2020年第4期65卷 253-256页

作者： fanyi li Jianbao liu Guangjie Chen lingyang Kong Xiaosen Zhang Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Key Laboratory of Alpine Ecology Center for Excellence in Tibetan Plateau Earth SciencesInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Yunnan Key Laboratory of Plateau Geographical Processes and Environmental Change School of Tourism and GeographyYunnan Normal UniversityKunming 650000China Institute of Loess Plateau Shanxi UniversityTaiyuan 030006China

An increasing number of studies have shown that many alpine lakes have experienced rapid ecosystem transformations over the past^200 years[1–3].However,the mechanisms responsible for triggering these changes are often ambiguous in paleolimnological records and hence they are often debated.A major reason for this is that lake ecosystems are under increasing pressure from both anthropogenic activities and climate *** means of distinguishing the effects of different regional drivers of lake ecosystem changes include the study of paleolimnological contexts which predate human activity,or the study of alpine lakes which are still largely unaffected by local human activity.

关键词： BP 晚全新世湖泊生态系统湖泊沉积枝角类

Research on Formation of ＂Bead-shaped＂ Seismic Reflection Feature of Carbonate Caves

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石油地球物理勘探 2012年第A2期47卷 106-113页

作者： li fanyi Wei Jianxin Di Bangrang Pan Wenqing Zheng Duoming Wan Xiaoguo Wang lingling State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum (Beijing) Beijing 102249China Exploration and Development Research Institute PetroChina Tarim Oilfield Company Korla Xinjiang 841000 China

Compound heterozygous mutation of AFG3L2 causes autosomal recessive spinocerebellar ataxia through mitochondrial impairment and MICU1 mediated Caoverload

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Science China life Sciences 2024年

作者： Hongyu li Qingwen Ma Yan Xue linlin Cai liwen Bao Lei Hong Yitao Zeng Shuzhen Huang Richard H.Finnell fanyi Zeng Shanghai Institute of Medical Genetics Shanghai Children's Hospital Shanghai Jiao Tong University School of Medicine Department of Histo-Embryology Genetics and Developmental Biology Shanghai Jiao Tong University School of Medicine NHC Key Laboratory of Medical Embryogenesis and Developmental Molecular Biology Shanghai Key Laboratory of Embryo and Reproduction Engineering Center for Precision Environmental Health Baylor College of Medicine School of Pharmacy Macau University of Science and Technology

Autosomal recessive spinocerebellar ataxias（SCARs） are one of the most common neurodegenerative diseases characterized by progressive ataxia. Although SCARs are known to be caused by mutations in multiple genes, there are still many cases that go undiagnosed or are misdiagnosed. In this study, we presented a SCAR patient, and identified a probable novel pathogenic mutation（c.1A>G, p.M1V） in the AFG3L2 start codon. The proband's genotype included heterozygous mutations of the compound AFG3L2(p.[M1V]; [R632X]（c.[1A>G];[1894.C>T]）), which were inherited from the father（c.1A>G, p.M1V） and mother（c.1894C>T, p.R632X）. Functional studies performed on hiPSCs（human induced pluripotent stem cells） generated from the patients and HEK293T cells showed that the mutations impair mitochondrial function and the unbalanced expression of AFG3L2 mRNA and protein levels. Furthermore, this novel mutation resulted in the degradation of the protein and the reduction of the stability of the AFG3L2 protein, and MCU（mitochondrial calcium uniporter） complex mediated Ca2+overload.

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