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Surface pollen and modern vegetation in Southern Xinjiang,China

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Science China Earth Sciences 2024年第2期67卷 510-530页

作者： Yun ZHANG lixin chen Yaoyao XI Zhaochen KONG Xianguo QIAO State Key Laboratory of Black Soils Conservation and Utilization Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun130102China Institute of Botany Chinese Academy of SciencesBeijing100093China Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China University of Chinese Academy of Sciences Beijing100049China School of Geosciences and Resources China University of Geosciences(Beijing)Beijing100083China

The study of modern pollen,and vegetation can improve the accuracy of paleoenvironmental reconstruction based on fossil pollen data.A total of 188 pollen surface samples were collected from Southern Xinjiang(34°00’–43°00’N,74°00’–94°00’E)in China,with an elevation range of 888–4530 *** pollen and vegetation were studied in the northern region of the Kunlun Mountains and the southern region of the Tianshan *** results showed that the surface pollen assemblages on the southern slope of the Tianshan Mountains(3530–1124 m)were divided into three pollen zones,namely,montane steppe,montane desert steppe,and montane *** zones were dominated by Artemisia,chenopodiaceae,and Ephedra *** surface pollen assemblages in the eastern Pamir Plateau(4530–1287 m)could be divided into alpine meadow,montane desert steppe,and montane desert zones,which were predominantly characterized by Artemisia,chenopodiaceae,and Asteraceae ***,the Southern Tarim Basin(3548–888 m)comprised montane desert steppe and montane desert zones,which was dominated by Artemisia and chenopodiaceae *** geographic distribution of the surface pollen sites obtained using ArcGIS,the R-value,and Pearson correlation analyses indicated that the over-represented Picea and Pinus pollen were of external origin and were transported by wind,water(rivers),and ice(glacier movement).Over-representation of Ephedra and Nitraria pollen was mainly distributed in the montane desert and desert steppe zones,*** from chenopodiaceae and Artemisia were over-represented and broadly distributed across Southern *** pollen was concentrated in areas with walnut trees,strongly indicating the presence of local parent *** to the Hybrid Singleparticle Lagrangian Integrated Trajectory model,more Pinus pollen was transported to the Pamir region by external airflows during spring and summer,resulting in its higher surface pollen *** elucidating t

关键词： Surface pollen Vegetation Distribution Picea Southern Xinjiang

A review of classical hydrogen isotopes storage materials

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Materials Reports(Energy) 2024年第1期4卷 23-42页

作者： Yang Liu Zhiyi Yang Panpan Zhou Xuezhang Xiao Jiacheng Qi Jiapeng Bi Xu Huang Huaqin Kou lixin chen State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou310027ZhejiangPR China Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province Hangzhou310013ZhejiangPR China Institute of Materials China Academy of Engineering PhysicsMianyang621907SichuanPR China

Hydrogen storage alloys(HSAs)are attracting widespread interest in the nuclear industry because of the generation of stable metal hydrides after tritium absorption,thus effectively preventing the leakage of radioactive *** used HSAs in the hydrogen isotopes field are Zr2M(M=Co,Ni,Fe)alloys,metallic Pd,depleted U,and ZrCo ***,Zr2M(M=Co,Ni,Fe)alloys are considered promising tritium-getter materials,and metallic Pd is utilized to separate and purify hydrogen ***,depleted U and ZrCo alloy are well suited for storing and delivering hydrogen ***,all the aforementioned HSAs need to modulate their hydrogen storage properties for complex operating *** this review,we present a comprehensive overview of the reported modification methods applied to the above *** is an effective amelioration method that mainly modulates the properties of HSAs by altering their local geometrical/electronic ***,microstructural modifications such as nano-sizing and nanopores have been used to increase the specific surface area and active sites of metallic Pd and ZrCo alloys for enhancing de-/hydrogenation *** combination of metallic Pd with support materials can significantly reduce the cost and enhance the pulverization ***,the poisoning resistance of ZrCo alloy is improved by constructing active surfaces with selective ***,the review is constructive for better understanding the properties and mechanisms of hydrogen isotope storage alloys and provides effective guidance for future modification research.

关键词： Hydrogen isotopes storage alloys Alloying Microstructural modification Surface modification Composite materials

Investigating the Immunogenic Cell Death‑Dependent Subtypes and Prognostic Signature of Triple‑Negative Breast Cancer

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Phenomics 2024年第1期4卷 34-45页

作者： Youyang Shi Yuanyuan Wu Feifei Li Kexin Jiang Xiaofang Fang Yu Wang Xiaoyun Song Rui Wang lixin chen Jinzhou Zheng Chunyu Wu Yuenong Qin Xiaofei Liu Sheng Liu Breast Surgery Longhua HospitalShanghai University of Traditional Chinese MedicineWanping South Road725Shanghai 200033China First Clinical College Shandong University of Traditional Chinese MedicineNo.16369Jingshi RoadLixia DistrictJinan 250011ShandongChina

Recently,immunotherapy has emerged as a promising and efective method for treating triple-negative breast cancer(TNBC).However,challenges still *** cell death(ICD)is considered a prospective treatment and potential combinational treatment strategy as it induces an anti-tumor immune response by presenting the antigenic epitopes of dead ***,the ICD process in TNBC and its impact on disease progression and the response to immunotherapy are not well *** this study,we observed dysregulation of the ICD process and verifed the altered expression of prognostic ICD genes in TNBC through quantitative real-time polymerase chain reaction(qRT-PCR)*** investigate the potential role of the ICD process in TNBC progression,we determined the ICD-dependent subtypes,and two were *** of their distinct tumor immune microenvironment(TIME)and cancer hallmark features revealed that Cluster 1 and 2 corresponded to the immune“cold”and“hot”phenotypes,*** addition,we constructed the prognostic signature ICD score of TNBC patients and demonstrated its clinical independence and *** ICD score could also serve as a potential biomarker for immune checkpoint blockade and may aid in the identifcation of targeted efective agents for individualized clinical strategies.

关键词： Immunogenic cell death Triple-negative breast cancer Tumor immune microenvironment Prognostic signature

湖北随州叶家山墓地M126出土铜器科学分析

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文博 2024年第1期 106-112页

作者：郁永彬陈丽新陈建立陈坤龙国家文物局考古研究中心北京100013 湖北省文物考古研究院湖北武汉430077 北京大学考古文博学院北京100871 北京科技大学科技史与文化遗产研究院北京100083

本文通过科技检测手段对叶家山M126出土铜器进行了分析。结果表明,经分析的10件器物中,有7件为铅锡青铜制成,包括6件容器和1件兵器,有3件锡青铜,全部为容器。这批铜器制作采用块范铸造工艺。祖己爵M126:16为一件商代器物。其他器物分属... 详细信息

本文通过科技检测手段对叶家山M126出土铜器进行了分析。结果表明,经分析的10件器物中,有7件为铅锡青铜制成,包括6件容器和1件兵器,有3件锡青铜,全部为容器。这批铜器制作采用块范铸造工艺。祖己爵M126:16为一件商代器物。其他器物分属A类和C类普通铅的范畴。其他族属铭文铜器中,一部分器物使用了与曾国铜器相同或相似的矿料,另一部分器物与曾国铜器使用的矿料不同,体现了西周早中期青铜物料流通信息,部分以器物组的形式流通。

关键词：冶金考古叶家山墓地西周铜器铅同位素比值

基于核心素养听评课问题与解决路径探究——青蓝工程听评课教研活动反思

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龙岩学院学报 2024年第2期42卷 117-122页

作者：陈立新龙岩学院附属中学福建龙岩364000

听评课是学校教研工作的重要环节,基于发展学生的核心素养,改进和完善听评课活动,可有效提高教师专业水平和课堂教学质量。认真审视实践中听评课的现状,发现普遍存在关注点“在教师而非学生、在结果而非过程、在形式而非实质、在数量而... 详细信息

听评课是学校教研工作的重要环节,基于发展学生的核心素养,改进和完善听评课活动,可有效提高教师专业水平和课堂教学质量。认真审视实践中听评课的现状,发现普遍存在关注点“在教师而非学生、在结果而非过程、在形式而非实质、在数量而非质量”等方面的问题,这些极大地制约教师专业发展以及教学水平的提升。

关键词：核心素养深度教学听评课问题解决路径

中国高职院校技术研发的进展与特征——基于2023年度国家发明授权专利的统计分析

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江苏高职教育 2024年第3期24卷 60-78页

作者：陈立新商丘师范学院信息技术学院河南商丘476000

按照第一权利人统计,2023年我国1578所高职院校获得发明专利共计6771项,平均每校获得4.3项专利,获得1项及以上专利的院校为608所。数据分析表明:“双高”院校、本科院校、公办院校比非“双高”院校、专科院校、民办院校有更强的技术研... 详细信息

按照第一权利人统计,2023年我国1578所高职院校获得发明专利共计6771项,平均每校获得4.3项专利,获得1项及以上专利的院校为608所。数据分析表明:“双高”院校、本科院校、公办院校比非“双高”院校、专科院校、民办院校有更强的技术研发能力;经济发达省份的高职院校具有较强的技术研发能力;高职院校在加工制造、农业与食品、建筑、物流运输技术上具有较强的研发能力,而在半导体、通信、计算机、医学诊断、电池、药品等技术上的研发能力相对较弱。从战略性新兴技术上来看,高职院校在新一代信息技术、高端装备制造、新材料、生物技术上有一定的研发能力;但在新能源汽车、新能源、节能环保、数字创意、相关服务技术上的研发能力不强。

关键词：高职院校技术研发发明专利数据分析

Echocardiographic Measurements in Normal Chinese Adults (EMINCA) II focusing on left ventricular and left atrial size and function by three-dimensional echocardiography

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FRONTIERS OF MEDICINE 2024年第4期18卷 649-663页

作者： Wang, Yingbin Zhang, Yu Yao, Guihua Tang, Hong chen, lixin Yin, Lixue Zhu, Tiangang Yuan, Jianjun Han, Wei Yang, Jun Shu, Xianhong Yang, Ya Wei, Yulin Guo, Yanli Ren, Weidong Gao, Dongmei Lu, Guilin Wu, Ji Yin, Hongning Mu, Yuming Tian, Jiawei Yuan, Lijun Ma, Xiaojing Dai, Hongyan Ding, Yunchuan Ding, Mingyan Zhou, Qing Wang, Hao Xu, Di Zhang, Mei Zhang, Yun Chinese Minist Educ State Key Lab Innovat & Transformat Luobing Theory Jinan 250012 Peoples R China Chinese Minist Educ Chinese Natl Hlth Commiss Key Lab Cardiovasc Remodeling & Funct Res Jinan 250012 Peoples R China Chinese Acad Med Sci Jinan 250012 Peoples R China Shandong Univ Dept Cardiol Qilu Hosp Jinan 250012 Peoples R China Shandong Univ Qingdao Dept Cardiol Qilu Hosp Qingdao 266000 Peoples R China Sichuan Univ West China Hosp Dept Ultrasonog Chengdu 610041 Peoples R China Jinan Univ Shenzhen Peoples Hosp Dept Ultrasonog Clin Med Coll 2 Shenzhen 518020 Peoples R China Elect Sci & Technol Univ China Affiliated Sichuan Prov Peoples Hosp Dept Ultrasonog Chengdu 610072 Peoples R China Peking Univ Dept Cardiol Peoples Hosp Beijing 100044 Peoples R China Henan Prov Peoples Hosp Dept Ultrasonog Zhengzhou 463599 Peoples R China Harbin Med Univ Dept Cardiol Affiliated Hosp 1 Harbin 150007 Peoples R China China Med Univ Dept Echocardiol Affiliated Hosp 1 Shenyang 110001 Peoples R China Fudan Univ Zhongshan Hosp Dept Echocardiol Shanghai 200032 Peoples R China Capital Med Univ Beijing Anzhen Hosp Dept Echocardiol Beijing 100029 Peoples R China Sun Yat Sen Univ Sun Yat Sen Mem Hosp Dept Cardiol Guangzhou 510120 Peoples R China Southwest Hosp AMU Dept Ultrasonog Chongqing 400038 Peoples R China China Med Univ Dept Ultrasonog Shengjing Hosp Shenyang 110136 Peoples R China Jilin Univ Dept Ultrasonog China Japan Union Hosp Changchun 130033 Peoples R China Shihezi Univ Affiliated Hosp 1 Sch Med Dept Ultrasonog Shihezi 832000 Peoples R China Guangxi Med Univ Dept Ultrasonog Affiliated Hosp 1 Nanning 537406 Peoples R China Hebei Med Univ Dept Echocardiol Hosp 2 Shijiazhuang 050061 Peoples R China Xinjiang Med Univ Dept Ultrasonog Affiliated Hosp 1 Urumqi 830054 Peoples R China Harbin Med Univ Dept Ultrasonog Affiliated Hosp 2 Harbin 150088 Peoples R China Air Force Med Univ PLA Dept Ultrasonog Tangdu Hosp Xian 710038 Peoples R China

Current guidelines encourage large studies in a diverse population to establish normal reference ranges for three-dimensional (3D) echocardiography for different ethnic groups. This study was designed to establish the normal values of 3D-left ventricular (LV) and left atrial (LA) volume and function in a nationwide, population-based cohort of healthy Han Chinese adults. A total of 1117 healthy volunteers aged 18-89 years were enrolled from 28 collaborating laboratories in China. Two sets of 3D echocardiographic instruments were used, and full-volume echocardiographic images were recorded and transmitted to a core laboratory for image analysis with a vendor-independent off-line workstation. Finally, 866 volunteers (mean age of 48.4 years, 402 men) were qualified for final analysis. Most parameters exhibited substantial differences between different sex and age groups, even after indexation by body surface area. The normal ranges of 3D-LV and 3D-LA volume and function differed from those recommended by the American Society of Echocardiography and the European Association of Cardiovascular Imaging guidelines, presented by the World Alliance Societies of Echocardiography (WASE) study, and from the 2D values in the EMINCA study. The normal reference values of 3D echocardiography-derived LV and LA volume and function were established for the first time in healthy Han Chinese adults. Normal ranges of 3D-LV and 3D-LA echocardiographic measurements stratified with sex, age, and race should be recommended for clinical applications.

关键词： three-dimensional echocardiography left ventricle left atrium normal reference values Chinese adults NORMAL VALUES EUROPEAN ASSOCIATION AMERICAN SOCIETY REFERENCE RANGES QUANTIFICATION NATIONWIDE CONSENSUS

基于改进遥感生态指数的吐鲁番-哈密地区生态环境质量评价及驱动机制分析

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生态学报 2024年第9期44卷 3911-3923页

作者：傅楷翔贾国栋余新晓陈立欣北京林业大学水土保持学院北京100083 林木资源高效生产全国重点实验室北京100083 北京林业大学水土保持国家林业和草原局重点实验室北京100083

吐鲁番市和哈密市是我国盐渍化危害最严重的地区之一,明晰其生态环境变化趋势和驱动机制对吐鲁番-哈密地区生态文明建设具有重要意义。基于Google earth engine(GEE)平台,筛选2005—2020年6—9月Landsat影像,选取绿度(SVAI)、湿度(Wet)... 详细信息

吐鲁番市和哈密市是我国盐渍化危害最严重的地区之一,明晰其生态环境变化趋势和驱动机制对吐鲁番-哈密地区生态文明建设具有重要意义。基于Google earth engine(GEE)平台,筛选2005—2020年6—9月Landsat影像,选取绿度(SVAI)、湿度(Wet)、热度(LST)、干度(NDBSI)和盐度(NDSI)构建改进型遥感生态指数(SRSEI)对吐鲁番-哈密地区生态环境进行评估。结果表明:(1)SRSEI使用SAVI代替NDVI并加入盐度指标(NDSI),与RSEI相比有着更高的第一主成分贡献率,能更全面客观地评价吐鲁番-哈密地区生态环境质量。(2)时间尺度上,2005—2020年吐鲁番-哈密地区SRSEI先下降后上升,均值0.49,并在2020年均值达到0.5575,较差和良的面积占比变化显著,较差占比减少了11.54%,良占比增加了30.15%。且未来生态环境变化趋势还将以改善为主;空间尺度上,北部西山台原和中部莫钦乌拉山生态质量多为优和良,较差区域主要集中在南部噶顺戈壁。(3)年均降水量、年均气温和经济生产总值是驱动SRSEI变化的主要控制因子,q值均大于0.092;与单因子对生态环境影响力相比,双因子交互产生的影响力更强,年均降水量∩经济生产总值是驱动吐鲁番-哈密地区生态环境发生变化的最强交互因子。

关键词：吐鲁番-哈密地区改进型遥感生态指数地理探测器驱动机制分析

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典型平推式滑坡水力分布规律及启动机理研究

人民长江 2024年第9期55卷 149-155,164页

作者：陈利鑫王震宇吉锋郭朋瑜成都理工大学地质灾害防治与地质环境保护国家重点实验室四川成都610059 四川交通职业技术学院四川成都611130

平推式滑坡形成于近水平岩层中,地下水对平推式滑坡的启动和运动过程影响非常显著。为揭示平推式滑坡滑动面上水力分布与滑坡启动的相关性,以成都市狮子山滑坡为地质原型,自主研制试验设备,进行水力测试试验,测试近水平倾角(0°~10°)... 详细信息

平推式滑坡形成于近水平岩层中,地下水对平推式滑坡的启动和运动过程影响非常显著。为揭示平推式滑坡滑动面上水力分布与滑坡启动的相关性,以成都市狮子山滑坡为地质原型,自主研制试验设备,进行水力测试试验,测试近水平倾角(0°~10°)条件下,底滑面两种不同连通条件下不同位置的水压力,研究底滑面承压水压力分布规律及启动机理。结果表明:①底滑面渗流条件较差或滑坡前缘堵塞条件下,水压力分布呈现梯形分布;流通条件下,水压力在底滑面方向上呈曲线下降,自后缘至剪出口下降速率先增大后减小,底滑面倾角越增大,下降速率变化越显著。②层间裂隙水扬压力值比传统采用三角分布形式的扬压力值小约27.6%。③薄层状泥岩的软化、变形是滑坡启动的根本原因;暴雨情况下底滑面扬压力和后缘裂隙中高水压下的水平推力联合作用将滑体推出是滑坡启动的直接原因。研究结果对平推式滑坡的稳定性分析评价和治理方案确定具有一定参考和借鉴价值。

关键词：平推式滑坡水力分布承压水孔隙水压力启动机理工程地质