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Distribution of wetlands and salt lakes in the Yadong region of Tibet based on remote sensing, and their geo-climatic environmental changes

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China Geology 2022年第4期5卷 637-648页

作者： ang sun Qing-hua Yang Zhi Liu Hua Chen Lei Han Shou-min Jiang Yue-yue Meng Yu Bian Yong-peng Yang China Aero Geophysical Survey and Remote Sensing Center for Natural Resources China Geological SurveyBeijing 100083China Sichuan Geological Survey Institute Chengdu 610036China

Based on the 16 scenes GF-1 satellite multi-spectral remote sensing images,through the adoption of data processing methods including orthorectification,geometric rectification,data fusion and image mosaic,integrated with field surveys,the remote sensing interpretation signs for the inland wetland types have been built,and the remote sensing survey of inland wetlands in Yadong region has been initiated,with six types of inland wetlands recognized in Yadong region,namely permanent rivers,seasonal rivers,lakes,salt lakes,alpine meadows,and inundated *** spatial distribution characteristics and the spreading rules of these wetlands have also been *** on full understanding of the overall characteristics of the inland wetlands in the Yadong region,using the three phases of TM images acquired in 1989,2003 and 2008 as well as the PMS2 data gathered by GF-1 in 2014,and the wide-range data(WFV3)gathered by GF-1 in *** to the typical salt lakes,a long-time salt lakes transition study was carried *** results show that the typical salt lakes in Yadong have been shrinking in the past three *** average annual shrinkage of Duoqing Co(Co means lake in Tibetan)was stronger than that of Gala Co,which are respective 87.30 hectares(usually short as ha;1 ha equals to 0.01 km^(2))/a and 24.20 ha/a;the shrinkage degree of Gala Co was higher than that of Duoqing Co,shrank by 59.27% and 35.73% *** on the remote sensing survey results and an integrated analysis of the predecessors’researchers,the reason for the shrinkage of the salt lakes is more inclined to geological *** process is manifested by a series of extensional faults at the bottom of the lake basin generated from tectonic activities,providing fluid infiltration channels,and inducing the eventual leakage of lake water to the lower *** result provides an important instance for understanding the evolution characteristics of wetlands and salt lakes in specific environ

关键词： Yadong Wetlands Salt lakes Duoqing Co Gala Co Geological survey engineering Tibet Plateau

Review of the SiC LDMOS power device

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Journal of Semiconductors 2024年第8期45卷 4-17页

作者： Ziwei Hu Jiafei Yao ang Li Qi sun Man Li Kemeng Yang Jun Zhang Jing Chen Maolin Zhang Yufeng Guo College of Integrated Circuit Science and Engineering(Industry-Education Integration School) Nanjing University of Posts andT elecommunicationsNanjing 210023China National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology Nanjing 210023China Nantong Institute of Nanjing University of Posts and Telecommunications Nantong 226000China

Silicon carbide(SiC),as a third-generation semiconductor material,possesses exceptional material properties that significantly enhance the performance of power *** SiC lateral double-diffused metal–oxide–semiconductor(LDMOS)power devices have undergone continuous optimization,resulting in an increase in breakdown voltage(BV)and ultra-low specific on-resistance(Ron,sp).This paper has summarized the structural optimizations and experimental progress of SiC LDMOS power devices,including the trench-gate technology,reduced surface field(RESURF)technology,doping technology,junction termination techniques and so *** paper is aimed at enhancing the understanding of the operational mechanisms and providing guidelines for the further development of SiC LDMOS power devices.

关键词： SiC LDMOS specific on-resistance breakdown voltage

Fabrication of nanoreactors based on polyoxoperoxometalates and enhancement of their catalytic activity

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Chinese Chemical Letters 2011年第7期22卷 875-878页

作者： Mei Jie Wei Chun Li Zhang Cong Liang sun ang Li Xiao Hong Wang Key Lab of Polyoxometalate Science of Ministry of Education Faculty of Chemistry Northeast Normal University Changchun 130024 China

The nanoreactors were fabricated by reacting amphiphilic quaternary ammoniums and polyoxoperoxometalates Kn[PW12-xTix. O40-x（O2）x] （x = 1, 2 and 3; n =5, 7 and 9）（K5[PW11TiO39（O2）], KT[PWloTi2038（O2）2] and K9[PW9Ti3O37（O2）3]）. Fourier transform infrared spectroscopy （FT-IR）, transmission electron microscopy （TEM） were used to characterize the resulting samples. This kind of nanocatalysts could promote NH4SCN＇ degradation into simple inorganic compounds such as SO4^2-, HCO3^- and NO3^- only using oxygen as an oxidant under room conditions.

关键词： Catalytic wet air oxidation Thiocyanate Polyoxometalate Nanocatalysts

A neural m^(6)A pathway regulates behavioral aggregation in migratory locusts

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Science China(Life Sciences) 2024年第6期67卷 1242-1254页

作者： Xianliang Huang Qing Li Yanan Xu ang Li Shanzheng Wang Yusheng Chen Chunrui Zhang Xia Zhang Hailin Wang Cong Lv Baofa sun Shaoqin Li Le Kang Bing Chen School of Life Science Institutes of Life Science and Green DevelopmentHebei UniversityBaoding 071002China College of Plant Science and Technology Huazhong Agricultural UniversityWuhan 430070China State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijing 100101China Institute of Health Sciences Anhui UniversityHefei 230601China Beijing Institute of Genomics Chinese Academy of SciencesBeijing 100101China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100101China

RNA N6-methyladenosine(m^(6)A),as the most abundant modification of messenger RNA,can modulate insect behaviors,but its specific roles in aggregation behaviors remain ***,we conducted a comprehensive molecular and physiological characterization of the individual components of the methyltransferase and demethylase in the migratory locust Locusta *** results demonstrated that METTL3,METTL14 and ALKBH5 were dominantly expressed in the brain and exhibited remarkable responses to crowding or *** individual knockdown of methyltransferases(i.e.,METTL3 and METTL14)promoted locust movement and conspecific attraction,whereas ALKBH5 knockdown induced a behavioral shift toward the solitary ***,global transcriptome profiles revealed that m^(6)A modification could regulate the orchestration of gene expression to fine tune the behavioral aggregation of *** summary,our in vivo characterization of the m^(6)A functions in migratory locusts clearly demonstrated the crucial roles of the m^(6)A pathway in effectively modulating aggregation behaviors.

关键词： RNA methylation N^(6)-methyladenosine transcriptional orchestration aggregation behavior Locusta migratoria

基于小样本功能磁共振数据的偏头痛时序特征分类研究

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生物医学工程学杂志 2023年第1期40卷 110-117页

作者：孙昂陈宁何俐张俊然四川大学、电气工程学院成都610065 四川大学华西医院、神经内科成都610041

提取偏头痛患者等的神经影像特征并进行识别模型的设计对相关疾病的辅助诊断具有重要意义。相较于常用的影像特征,本研究直接采用时间序列信号表征偏头痛患者组和健康对照组的大脑功能状态,可有效利用时间信息并减小分类模型训练计算量... 详细信息

提取偏头痛患者等的神经影像特征并进行识别模型的设计对相关疾病的辅助诊断具有重要意义。相较于常用的影像特征,本研究直接采用时间序列信号表征偏头痛患者组和健康对照组的大脑功能状态,可有效利用时间信息并减小分类模型训练计算量。首先,本研究针对小样本群体运用组水平独立成分分析和字典学习划分不同脑区后,提取区域平均时间序列信号;其次,将提取的时间序列平均划分成多个子时间序列,以扩充模型输入样本;最后,使用双向长短期记忆网络对时间序列建模,学习每个时间序列内部的前后时序信息来刻画周期性大脑状态变化以提高偏头痛的诊断准确率。研究结果显示,偏头痛患者组与健康对照组的分类准确率为96.94%、曲线下面积为0.98,且计算时间相对较短。实验表明,本文方法具有较强的适用性,时序特征提取和双向长短期记忆网络模型结合能较好地用于偏头痛的分类诊断;这项工作为基于小样本的神经影像数据的轻量化诊断模型提供了新的思路,并有助于相关疾病神经鉴别机制的探索。

关键词：偏头痛时间序列小样本字典学习双向长短期记忆网络

Combat Terrorism, Protect Human Rights

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The Journal of Human Rights 2002年第1期1卷 36-38页

作者： sun ang

September 11 terrorist attacks resulted in thousands in death or disappearance and property losses measured in billions of US dollars. The psychological scars suffered by people caused by the scenario of terror can not be measured in numeral terms. The indifference of terrorism to human lives and property created by humankind constitutes serious threat to and violation of human fights, especially the right to life and the right to property, and poses threat to

关键词： Protect Human Rights Combat Terrorism

Divergent responses of runoff to climate change in the upper basins of the Third Pole dominated by westerlies and monsoon

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Science China Earth Sciences 2024年第8期67卷 2592-2614页

作者： Qikai sun Fengge SU He sun State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100101China

The diverse climates,distribution of snow and glaciers,and geographic locations directly affect the runoff response to climate change in the upper basins of the Third *** present,a comprehensive analysis of runoff variations and their distinct responses to climate change in the westerlies-and monsoon-dominated upper basins is still *** study comprehensively analyzed annual runoff variations in westerlies-dominated basins(the upper basins of the Aksu(UAKS),Syr Darya(USRD),Yarkant(UYK),Hotan(UHT),Amu Darya(UAMD),and Indus(UI))and monsoon-dominated basins(the upper basins of the Yangtze(UYA),Yellow(UYE),Lancang(ULC),Nujiang(UNJ),and Yarlung Zangbo(UYZ))of the Third Pole from 1961 *** multi-source meteorological data and large-scale circulation factors,this study investigated the divergent responses of runoff in the upper basins to climate change,and explored the large-scale circulation mechanisms underlying runoff variations in these upper *** results showed that:(1)The annual runoff in the majority of upper basins(except for the UYE and UYZ)exhibited an increasing trend,and the annual runoff in the UAKS,UYK,and UI showed a significant increasing trend from1961 to *** annual runoff in the upper basins of the Third Pole changed abruptly from decreasing to increasing between the 1980s and 2000s,with the exception of the UYE.(2)The runoff in the monsoon-dominated upper basins has been controlled primarily by changes in precipitation over the past 55 *** contrast,the runoff in the westerlies-dominated upper basins exhibited three distinct long-term responses to climate change:temperature-dominated(UYK and UHT),precipitation-dominated(USRD and UAMD),and the combined influence of precipitation and temperature(UAKS and UI).Since the 1960s,the sensitivity of runoff to warm season temperature changes in the most westerlies-dominated upper basins has decreased,while the response of runoff to precipitation changes has intensified.(3)The stud

关键词： Upper basins of the Third Pole Climate change Westerlies and monsoon Runoff variations Large-scale circulation factors

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思想政治教育基础理论研究反思及再出发

思想政治教育研究 2024年第3期40卷 69-75页

作者：孙其昂河海大学马克思主义学院江苏南京211100

思想政治教育学科40年,思想政治教育基础理论研究取得重要理论成果,但总体处在进入和展开的研究阶段。思想政治教育基础理论研究的特点有自觉意识、成果丰富、形成研究领域、培养了学者队伍、形成研究传统,为未来研究提供了扎实基础。... 详细信息

思想政治教育学科40年,思想政治教育基础理论研究取得重要理论成果,但总体处在进入和展开的研究阶段。思想政治教育基础理论研究的特点有自觉意识、成果丰富、形成研究领域、培养了学者队伍、形成研究传统,为未来研究提供了扎实基础。思想政治教育基础理论研究有待推进到理论自觉新阶段,认识和把握时代任务,进一步明确思想政治教育基础理论的结构位置和意义。要对思想政治教育基础理论研究的议题及意义再认识、再出发,力求进入思想政治教育本体,进入思想政治教育基础理论内核,争取再突破,开展体系研究,探索有组织的研究,在基础理论研究学术磨炼中成长成才。

关键词：思想政治教育基础理论研究反思时代任务再出发

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Efficacy and safety of PD-1 blockade plus long-course chemoradiotherapy in locally advanced rectal cancer(NECTAR):a multi-center phase 2 study

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Signal Transduction and Targeted Therapy 2024年第4期9卷 1721-1729页

作者： Zhengyang Yang Jiale Gao Jianyong Zheng Jiagang Han ang Li Gang Liu Yi sun Jie Zhang Guangyong Chen Rui Xu Xiao Zhang Yishan Liu Zhigang Bai Wei Deng Wei He Hongwei Yao Zhongtao Zhang Department of General Surgery Beijing Friendship HospitalCapital Medical UniversityState Key Lab of Digestive HealthNational Clinical Research Center for Digestive DiseasesBeijingChina Department of Gastrointestinal Surgery The First Affiliated Hospital of Air Force Medical UniversityXi'anChina Department of General Surgery Beijing Chaoyang HospitalCapital Medical UniversityBeijingChina Department of General Surgery Beijing Xuanwu HospitalCapital Medical UniversityBeijingChina Department of General Surgery Tianjin Medical University General HospitalTianjinChina Department of Anorectal Tianjin People's HospitalTianjinChina Department of Radiology Beijing Friendship Hospital Capital Medical UniversityBeijingChina Department of Pathology Beijing Friendship HospitalCapital Medical UniversityBeijingChina Department of Thoracic Surgery/Institute of Thoracic Oncology West China HospitalSichuan UniversityChengduChina

Adding PD-1 blockade in the neoadjuvant regimens for locally advanced rectal cancer(LARC)patients with microsatellite stable(MsS)/mismatch repair-proficient(pMMR)tumors is an attractive,but debatable *** phase 2,multicenter,prospective,single-arm study enrolled patients from 6 centers from June 2021 to November *** advanced rectal cancer(LARC,cT_(3-4a)N_(0)M_(0) and cT_(1-4a)N_(1-2)M_(0))patients aged≥18 years with the distance from distal border of tumor to anal verge≤10 cm(identified by Magnetic Resonance Imaging)were qualifed for *** patients received long-course radiotherapy(50 Gy/25 fractions,2 Gy/fraction,5 days/week)and three 21-day cycles capecitabine(850-1000 mg/m2,bid,po,day1-14)and three 21-day cycles tislelizumab(200 mg,***,day8)as *** mesorectal excision(TME)was 6-12 weeks after the end of radiotherapy to achieve radical resection.A total of 50 patients were enrolled in this *** pathological complete response rate was 40.0%[20/50,95%confidence interval(CI):27.61-53.82%],while 15(30.0%,95%CI:19.1-43.75%),9(18.0%,95%CI:9.77-30.8%),2(4.0%,95%CI:1.10-13.46%)patients respectively achieved grade 1,2,and 3 tumor ***-related adverse events(TRAEs)occurred in 28(56.0%)LARC patients,including 26(52.0%)with grade I-II and 2(4.0%)with grade II(1 with grade 3 immune-related colitis and 1 with grade 3 rash).PD-1 blockade plus long-course chemoradiotherapy(CRT)showed promising therapeutic effects according to pathological complete response rate and is well-tolerated in LARC patients.A larger randomized controlled study is desired to further validate the above findings.

关键词： rectal cancer phase