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中国侏罗纪年代地层学研究的现状

地层学杂志 2005年第2期29卷 124-129页

作者：沙金庚中国科学院南京地质古生物研究所江苏南京210008

“国际地层表”依据菊石带建立起来的侏罗纪年代地层系统在全球海相侏罗系的划分和对比中有着广泛的应用,但却很难直接应用于非海相侏罗纪地层系统中。中国的侏罗系多属非海相,近年来我国地质工作者们不但将中国的海相侏罗系与全球侏罗... 详细信息

“国际地层表”依据菊石带建立起来的侏罗纪年代地层系统在全球海相侏罗系的划分和对比中有着广泛的应用,但却很难直接应用于非海相侏罗纪地层系统中。中国的侏罗系多属非海相,近年来我国地质工作者们不但将中国的海相侏罗系与全球侏罗纪年代地层系统进行了较合理的对比,发现了穿越海相三叠系-侏罗系界线的连续沉积的剖面,而且建立了非海相侏罗系的阶。

关键词：中国海相地层非海相地层侏罗系年代地层学国际地层表

Updated roles of the gut microbiota in exploring shrimp etiology, polymicrobial pathogens, and disease incidence

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Zoological Research 2024年第4期45卷 910-923页

作者： jin-Bo Xiong Hao-Nan sha Jiong Chen State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products School of Marine SciencesNingbo UniversityNingboZhejiang 315211China Key Laboratory of Aquacultural Biotechnology Ministry of EducationSchool of Marine SciencesNingbo UniversityNingboZhejiang 315211China Laboratory of Biochemistry and Molecular Biology School of Marine SciencesNingbo UniversityNingboZhejiang 315211China

Litopenaeus vannamei is the most extensively cultured shrimp species globally,recognized for its scale,production,and economic ***,its aquaculture is plagued by frequent disease outbreaks,resulting in rapid and massive *** research often lags behind the emergence of new diseases,leaving the causal agents of some shrimp diseases unidentified and leading to nomenclature based on symptomatic presentations,especially in cases involving co-and polymicrobial *** data on shrimp disease statuses remain *** this review,we summarize current knowledge on shrimp diseases and their effects on the gut ***,we also propose a workflow integrating primary colonizers,“driver”taxa in gut networks from healthy to diseased states,disease-discriminatory taxa,and virulence genes to identify potential polymicrobial *** examine both abiotic and biotic factors(e.g.,external and internal sources and specific-disease effects)that influence shrimp gut microbiota,with an emphasis on the“holobiome”concept and common features of gut microbiota response to diverse *** excluding the effects of confounding factors,we provide a diagnosis model for quantitatively predicting shrimp disease incidence using disease common-discriminatory taxa,irrespective of the causal *** to the conservation of functional genes used in designing specific primers,we propose a practical strategy applying qPCR-assayed abundances of disease common-discriminatory functional *** review updates the roles of the gut microbiota in exploring shrimp etiology,polymicrobial pathogens,and disease incidence,offering a refined perspective for advancing shrimp aquaculture health management.

关键词： Shrimp disease Gut microbiota Polymicrobial pathogens Diagnosis model Disease common-discriminatory taxa Disease prediction

一个值得注意的修订——评“中国黑龙江省东部早白垩世双壳类”

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古生物学报 1999年第3期38卷 402-406页

作者：沙金庚中国科学院南京地质古生物研究所

９９７年，顾知微、李子舜、于希汉（Ｇｕｅｔａｌ．，１９９７）发表了英文专著“中国黑龙江省东部早白恶世双壳类”（“ＬｏｗｅｒＣｒｅｔａｃｅｏｕｓｂｉｖａｌｖｅｓｆｒｏｍｔｈｅｅａｓｔｅｒｎＨｅｉｌｏｎｇｊｉａｎｇｐｒｏ... 详细信息

９９７年，顾知微、李子舜、于希汉（Ｇｕｅｔａｌ．，１９９７）发表了英文专著“中国黑龙江省东部早白恶世双壳类”（“ＬｏｗｅｒＣｒｅｔａｃｅｏｕｓｂｉｖａｌｖｅｓｆｒｏｍｔｈｅｅａｓｔｅｒｎＨｅｉｌｏｎｇｊｉａｎｇｐｒｏｖｉｎｃｅｏｆＣｈｉｎａ”）。他...

关键词：双壳类龙爪沟群鸡西群早白垩世黑龙江

Early Cretaceous Cypridea(Non-marine Ostracoda) from Beipiao-Yixian Basin in Western Liaoning,Northeast China

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Early Cretaceous Cypridea(Non-marine Ostracoda) from Beipiao...

国家基础科学人才培养基金对古生物学人才培养的促进作用

全国微体古生物学分会第九届会员代表大会暨第十四次学术年会、全国化石藻类专业委员会第七届会员代表大会暨第十五次学术讨论会

作者： Wang Ya-qiong sha jin-geng Pan Yan-hong LPS Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences

Genus Cypridea Bosquest 1852 ranging from the Kimmeridgian to the Lower Eocene,frequently occurs as high abundance from the Jianshangou and jinggangshan beds of the Yixian Formation,western Liaoning,Northeast ***,the ... 详细信息

关键词： Western from Beipiao-Yixian Basin in Western Liaoning,Northeast China Early Cretaceous Cypridea Non-marine Ostracoda

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中国科学基金 2006年第6期20卷 342-344页

作者：沙金庚中国科学院南京地质古生物研究所南京210008

古生物学是一门古老而充满生机的学科，研究对象是地球发展历史过程中经自然作用保存于地层中的生物遗体、遗迹，以及生物成因的残留有机物分子。古生物标本中蕴含了地史时期地球生命以及环境等方面的大量信息，对揭示地球的演化过程，... 详细信息

古生物学是一门古老而充满生机的学科，研究对象是地球发展历史过程中经自然作用保存于地层中的生物遗体、遗迹，以及生物成因的残留有机物分子。古生物标本中蕴含了地史时期地球生命以及环境等方面的大量信息，对揭示地球的演化过程，生命的起源与演化，以及古地理、古气候、古环境的变迁都具有十分重要的作用。古生物学在历史上曾有力地促进了进化论和辩证唯物主义的创立和发展，同时，对地质科学领域诸多重大理论的建立和突破提供了古生物学的科学证据。在生产实践中，特别是在沉积矿产的勘探开发中，古生物学也得到广泛的应用。

关键词：古生物学人才培养基础科学地球生命基金辩证唯物主义发展历史演化过程

Neuroprotective Effect and Mechanism of Tanreqing Injection on Ischemic Stroke:Insights from Network Pharmacology and in vivo Experiments

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Chinese Journal of Integrative Medicine 2024年第8期30卷 713-720页

作者： LI Zhong-hao PU Xiao-qi LI sha-sha DONG Xiao-ke ZHANG Guo-qiang WANG Yu LIU jin-min Department of Emergency China-Japan Friendship HospitalBeijing100029China Department of Neurology Beijing University of Chinese Medicine Dongfang HospitalBeijing100078China Department of Radiology China-Japan Friendship HospitalBeijing100029China Graduate School Beijing University of Chinese MedicineBeijing100029China

Objective To explore the neuroprotective effects and mechanism of Tanreqing Injection(TRQ)on treating ischemic stroke based on network pharmacology and in vivo experimental *** The chemical compounds of TRQ were retrieved based on published data,with targets retrieved from PubChem,Therapeutic Target Database and *** visualization and analysis were performed using Cytoscape,with protein-protein interaction networks derived from the STRING *** analysis was performed using Kyoto Encyclopedia of Genes Genomes pathway and Gene Ontology *** in vivo experiments,the middle cerebral artery occlusion(MCAO)model was *** volume was determined by 2,3,5-triphenyltetrazolium hydrochloride staining and protein expressions were analyzed by Western *** docking was performed to predict ligand-receptor *** We screened 81 chemical compounds in TRQ and retrieved their therapeutic *** the targets,116 were therapeutic targets for *** enrichment analysis showed that the apelin signaling pathway was a key pathway for ischemic ***,in in vivo experiment we found that administering with intraperitoneal injection of 2.5 mL/kg TRQ every 6 h could significantly reduce the infarct volume of MCAO rats(P<0.05).In addition,protein levels of the apelin receptor(APJ)/phosphatidylinositol 3-kinase(PI3K)/protein kinase B(AKT)pathway were increased by TRQ(P<0.05).In addition,41 chemical compounds in TRQ could bind to *** The neuroprotective effect of TRQ may be related to the APJ/PI3K/AKT signaling ***,further studies are needed to confirm the findings.

关键词： Tanreqing Injection Chinese medicine ischemic stroke middle cerebral artery occlusion quantitative estimate of drug-likeness

均时作用——一个常见但不易识别的埋葬学现象

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古生物学报 2007年第4期46卷 493-502页

作者：泮燕红沙金庚中国科学院南京地质古生物研究所南京210008

生物化石群落在埋葬过程中普遍经历了均时作用的过程。正是这种作用导致了同一生态环境域,但不同时期生物组合相混合的结果。因此,这种化石群落可能为一个连续演化群落的不同阶段的混合体,也可能是环境连续演化过程中不同生态群落的混... 详细信息

生物化石群落在埋葬过程中普遍经历了均时作用的过程。正是这种作用导致了同一生态环境域,但不同时期生物组合相混合的结果。因此,这种化石群落可能为一个连续演化群落的不同阶段的混合体,也可能是环境连续演化过程中不同生态群落的混合组合,这样的化石组合所记录的古生物学信息非常复杂。因此,对化石累积过程中的均时作用的清晰了解,将非常有助于古生物群落的分类学、居群动力学、埋葬学、古生态学、演化古生物学,甚至地层学研究精度的提高。文章根据前人的研究,扼要介绍和讨论均时作用的概念、过程、程度、效应和判别,及受均时作用影响的化石组合的分类。

关键词：均时作用化石积累埋葬学古生态学

对“中白垩世(Albian-Santonian)热带大西洋表层海水温度记录”的评述

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地层学杂志 2009年第2期33卷 193-197页

作者：泮燕红沙金庚现代古生物学和地层学国家重点实验室中国科学院南京地质古生物研究所江苏南京210008

Forster等依据与δ18O无关的TEX86值来推算古温度的方法,获得了中白垩世(阿尔布期—三冬期)的表层海水温度(SST)记录。中白垩世期间,南美Demerara海隆位于热带大西洋西部,从赛诺曼期SST逐步升高(达31℃—35℃),至赛诺曼期-土仑期界线附... 详细信息

Forster等依据与δ18O无关的TEX86值来推算古温度的方法,获得了中白垩世(阿尔布期—三冬期)的表层海水温度(SST)记录。中白垩世期间,南美Demerara海隆位于热带大西洋西部,从赛诺曼期SST逐步升高(达31℃—35℃),至赛诺曼期-土仑期界线附近,SST的最高值明显高过35℃;土仑期内出现两次变凉事件(降温约2℃—3℃),打断了中白垩世稳定变暖的趋势;康尼亚克期,SST逐步下降,至三冬期降到了最低值(约32℃—33℃)。这一研究结果表明,在地质时期内,尽管中白垩世代表了典型的温室气候,但仍然很不稳定。驱动气候变化的因素是综合的,主要受地轴与地球赤道间的夹角变化、太阳辐射程度,及地球深部物质和构造运动等因素的影响,其他孤立的事件则很难影响全球性气候变化。气候的变化影响着生物的演化,古气候是研究重大地质事件的重要参数,古生物为研究古气候的最主要的标志之一。

关键词：表层海水温度古气候白垩纪热带大西洋

Laser powder bed fusion of NiTiFe shape memory alloy via premixed powder:microstructural evolution,mechanical and functional properties

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Rare Metals 2024年第5期43卷 2300-2316页

作者： Bo Yuan jin-Guo Ge Liang Zhang Hong-Jun Chen Long-sha Wei Yu-Duo Zhou Run-Hua Song Institute of Intelligent Manufacturing Technology Shenzhen PolytechnicShenzhen 518055China School of Mechanical and Electrical Engineering Guilin University of Electronic TechnologyGuilin 541004China Guangdong Advanced Polymer Composite Engineering Technology Research Center Shenzhen Academy of Aerospace TechnologyShenzhen 518057China Jihua Laboratory Testing Center Jihua LaboratoryFoshan 528000China

High-cost pre-alloyed powder is the bottleneck problem that limits the widespread application of additivemanufactured shape memory *** this work,the lowcost ternary NiTiFe shape memory alloy is fabricated by laser powder bed fusion(LPBF)technique via mechanically mixed pre-alloy NiTi powder and varying contents pure Fe powder(1,2,3 wt%).All NiTiFe alloys show a relative density of up to 99.8%by optimizing the LPBF processing *** to the heterogeneous nucleation effect of micron-sized Fe particles,both grain refinement and texture weakening are generated in the NiTiFe alloys,accompanied by the reduction of dislocation *** the room-temperature mechanical properties,the NiTi-3Fe alloy shows the highest microhardness of HV370,but the fracture strength and elongation reduce to1701 MPa and 23%*** evolution of mechanical properties is attributed to the high internal defects,low dislocation density and the incoherent ***,the NiTi-3Fe alloy shows the quasi-linear superelasticity behavior;the superelastic recoverable strain of NiTi-1Fe and NiTi-2Fe decreased with the increase in Fe *** study provided a new-fangled insight for the development of multi-component NiTi-based shape memory alloys by additive manufacturing.

关键词： Additive manufacturing shape memory alloy Metal matrix composite Microstructure Mechanical properties