检索结果-南通市图书馆

教育生态视域下高校创新创业教育共同体的构建

在线全文

学校读者我要写书评

暂无评论

开封大学学报 2024年第1期38卷 42-46页

作者：万是明开封大学创新创业学院河南开封475004

创新创业教育生态系统是创新创业生态系统与创新创业教育的有机结合。高校创新创业教育共同体以创业主体为核心,强调各子系统间协同合作,从而建立高效、有序、稳定的创新创业教育生态系统。高校创新创业教育共同体发展至今,取得很大成绩... 详细信息

创新创业教育生态系统是创新创业生态系统与创新创业教育的有机结合。高校创新创业教育共同体以创业主体为核心,强调各子系统间协同合作,从而建立高效、有序、稳定的创新创业教育生态系统。高校创新创业教育共同体发展至今,取得很大成绩,同时也面临着培育目标不清晰、组织体系不完善、协同机制缺位、支持体系工作力度不够大等问题。应基于教育生态学视角,从教育生态系统的主体性、整体性、互促性等特性出发,分析高校创新创业教育共同体当前面临困境的原因,进而明确其发展方向、发展路径,推动高校创新创业教育共同体蓬勃发展。

关键词：教育生态学创新创业教育共同体生态系统

Evolution of Asian drying since 30 Ma revealed by clay minerals record in the West Pacific and its tectonic-climatic forcing

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2023年第6期66卷 1365-1382页

作者： Yi TANG shiming wan Debo ZHAO Zhaojie YU Zhaokai XU Jin ZHANG Zehua SONG Mengjun LI Hualong JIN Wenjun JIAO Hongkun DONG Anchun LI Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266061China University of Chinese Academy of Sciences Beijing 100049China

As the second largest dust source on the globe,the tectonic and climatic evolution of continental Asia has an important impact on regional and global climate *** West Pacific is the main sediment sink for eolian dust transported eastward from the Asian *** minerals,as the major fine-grained weathering products of continental rocks,can be readily transported by wind or currents over long distances and thus have been widely used in the reconstruction of paleoclimate and weathering ***,the overall evolutionary tendency and response mechanism of clay mineral records over large spatial and long timescales across Asia remain ***,two continuous and high-resolution clay mineral records since 30 Ma were reconstructed from sediments at Deep Sea Drilling Program(DSDP)Sites 292 and 296 in the Philippine *** minerals and Sr-Nd isotope compositions were used to constrain provenance and reconstruct the drying history of the dust source region since the *** results show that the clay-sized detrital sediments in the Philippine Sea are a mixture of Asian eolian dust and volcanic materials from the West Pacific *** on the clay mineral compositions and eolian flux,we reveal that the Asian interior has been continuously drying since the late Oligocene and that stepwise enhanced aridification occurred at approximately 20,14,7,and 3 *** with other regions of the world,the relative contents of illite and chlorite increased more dramatically in Asia during the late Cenozoic,and the inconsistency became more obvious at approximately 20 *** 3 Ma,illite and chlorite have increased consistently across the *** with the Asian tectonic and climatic history,we suggest that the increase in illite and chlorite from Asia between 20 and 3 Ma was mainly in response to the uplift of the Himalayan-Tibetan Plateau,whereas after 3 Ma,it was primarily controlled by global cooling driven by the expansion of the Arctic ice shee

关键词： Clay minerals Sr-Nd isotopes Sediment provenance Eolian dust West Pacific Late Cenozoic

Enhanced weathering input from South Asia to the Indian Ocean since the late Eocene

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2023年第3期68卷 305-313,M0004页

作者： Zehua Song shiming wan Christophe Colin Christian France-Lanord Zhaojie Yu Arnaud Dapoigny Hualong Jin Mengjun Li Jin Zhang Debo Zhao Xuefa Shi Anchun Li Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266061China UniversitéParis-Saclay Centre National de la Recherche Scientifique(CNRS)Géosciences Paris-Saclay(GEOPS)Orsay 91405France Center for Excellence in Quaternary Science and Global Change Chinese Academy of SciencesXi’an 710061China Centre de Recherches Pétrographiques et Géochimiques(CRPG) Centre National de la Recherche Scientifique(CNRS)-Universitéde LorraineVandoeuvre les Nancy 54501France Laboratoire des Sciences du Climat et de l’Environnement LSCE/IPSLCEA-CNRS-UVSQUniversitéParis-SaclayGif-sur-Yvette 91191France Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of OceanographyMinistry of Natural ResourcesQingdao 266061China

nhanced silicate weathering induced by the uplift of the Himalayan-Tibetan Plateau(HTP)has been considered as the major cause of pCO_(2) decline and Cenozoic ***,this hypothesis remains to be validated,largely due to the lack of a reliable reconstruction of the HTP weathering ***,we present a 37-million-year record of the difference in the seawater radiogenic neodymium isotopic composition(△ε_(Nd))of Ocean Drilling Program(ODP)sites and Fe-Mn crusts between the northern and central Indian Ocean,which indicates the contribution of regional weathering input from the South Asian continent to the Indian *** results show a long-term increase in △ε_(Nd) and thus provide the first critical evidence of enhanced South Asian weathering input since the late *** evolution coincided well with major pulses of surface uplift in the HTP and global climatic *** foraminiferal eNd record suggests that tectonic uplift and silicate weathering in South Asia,especially in the Himalayas,might have played a significant role in the late Cenozoic cooling.

关键词： South Asian weathering input Himalayan-Tibetan Plateau uplift Cenozoic global cooling Foraminiferal eNd record Indian Ocean ODP Site 758

The genetic basis of the leafy seadragon's unique camouflage morphology and avenues for its efficient conservation derived from habitat modeling

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2023年第6期66卷 1213-1230页

作者： Meng Qu Yingyi Zhang Zexia Gao Zhixin Zhang Yali Liu shiming wan Xin wang Haiyan Yu Huixian Zhang Yuhong Liu Ralf Schneider Axel Meyer Qiang Lin CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesSouthern Marine Science and Engineering Guangdong Laboratory(GMLGuangzhou)Guangzhou511458China Sanya Institute of Oceanology SCSIOSanya572000China University of Chinese Academy of Sciences Beijing100049China College of Fisheries Key Lab of Freshwater Animal BreedingMinistry of AgricultureHuazhong Agricultural UniversityWuhan430070China Marine Evolutionary Ecology Zoological InstituteKiel University24118KielGermany Department of Biology University of Konstanz78464KonstanzGermany Global Ocean and Climate Research Center South China Sea Institute of OceanologyGuangzhou510301China

The leafy seadragon certainly is among evolution’s most“beautiful and wonderful”species aptly named for its extraordinary camouflage mimicking its coastal seaweed ***,limited information is known about the genetic basis of its phenotypes and conspicuous ***,we revealed genomic signatures of rapid evolution and positive selection in core genes related to its camouflage,which allowed us to predict population dynamics for this *** genomic analysis revealed that seadragons have the smallest olfactory repertoires among all ray-finned fishes,suggesting adaptations to the highly specialized *** positively selected and rapidly evolving genes that serve in bone development and coloration are highly expressed in the leaf-like appendages,supporting a recent adaptive shift in camouflage appendage ***-out of bmp6 results in dysplastic intermuscular bones with a significantly reduced number in zebrafish,implying its important function in bone *** climate change-induced loss of seagrass beds now severely threatens the continued existence of this enigmatic *** leafy seadragon has a historically small population size likely due to its specific habitat requirements that further exacerbate its vulnerability to climate ***,taking climate change-induced range shifts into account while developing future protection strategies.

关键词： seadragon camouflage olfactory receptor global climate change habitat suitability conservation

Geochemistry of rare earth elements in the mid-late Quaternary sediments of the western Philippine Sea and their paleoenvironmental significance

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2014年第4期57卷 802-812页

作者： XU ZhaoKai LI TieGang wan shiming YIN XueBo JIANG FuQing SUN HanJie JinYong CHOI DhongIl LIM Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of Sciences Department of Oceanography Kunsan National University South Sea Institute Korea Institute of Ocean Science and Technology

Based on a δ18O chronology,rare earth elements(REE) and other typical elements in sediments from core MD06-3047 in the western Philippine Sea were analyzed to constrain the provenances of the sediments and investigate quantitative changes in the Asian eolian input to the study area over the last 700 *** the competing processes that might affect REE compositions,sediment provenance is the most important *** analysis suggests that the study sediments have two provenance end-members;local volcanic sources are dominant,and eolian dust from the Asian continent has a smaller *** glacial periods,eolian input to the western Philippine Sea was *** contrast,material supply from local volcanics increased during interglacial *** in eolian input to the study area were probably related to the strength of the East Asian winter monsoon(EAWM) as well as aridity in the Asian continent on an orbital time scale,and were partly influenced by local control factors on shorter time ***,we propose that the present study expands the application of the REE-based method for quantitatively estimating the eolian component from the mid-latitude northern Pacific to the low-latitude western ***,the study preliminarily confirms the influence of EAWM-transported eolian material on sedimentation in the western Philippine Sea since 700 ka.

关键词：第四纪沉积物西菲律宾海稀土元素地球化学特征古环境意义东亚冬季风亚洲大陆时间尺度

晚新生代日本海古生产力演化——研究进展评述

在线全文

学校读者我要写书评

暂无评论

沉积学报 2023年第6期41卷 1714-1738页

作者：程宇龙万世明中国科学院海洋研究所海洋地质与环境重点实验室山东青岛266071 中国科学院大学北京100049

【意义】海洋表层初级生产力及其生物泵过程是海洋碳循环的关键环节。日本海作为西北太平洋一个主要的边缘海,其晚新生代古生产力演化与区域构造/火山活动、东亚季风/西风、洋流演变、全球气候和海平面变化等密切相关,是探寻地球系统科... 详细信息

【意义】海洋表层初级生产力及其生物泵过程是海洋碳循环的关键环节。日本海作为西北太平洋一个主要的边缘海,其晚新生代古生产力演化与区域构造/火山活动、东亚季风/西风、洋流演变、全球气候和海平面变化等密切相关,是探寻地球系统科学的极佳窗口。【进展和结论】得益于一系列国际大洋钻探计划(DSDP31、ODP127/128和IODP346)等航次的相关研究,有关日本海古海洋演化,尤其是古生产力演化重建方面取得了许多重要认识。日本海古生产力的常用代用指标包括沉积物的微量元素组成、生物标志物、生源组分含量及同位素组成、微体古生物化石种属特征等。在地质时间尺度,日本海表层初级生产力主要取决于浮游生物必需的主要营养盐(氮、磷和硅)和微量营养盐(铁、锰、钴、锌、铜等),而日本海的营养盐主要通过风尘输入、火山活动、表层和深层洋流携带过来。在构造时间尺度,日本海古生产力的长期演化及其驱动机制(如风尘、火山铁肥和洋流贡献)尚不清楚,区域构造演化与海道开合、全球气候和海平面变化、火山活动及亚洲风尘输入演化等可能是关键驱动因素。在轨道—千年尺度,日本海沉积了深—浅色的韵律层,表层生产力大体表现出冰期降低而间冰期增加的特征,这主要取决于水体交换和层化状况改变导致的营养盐供应变化。目前,日本海古生产力的重建主要集中在晚第四纪,晚新生代构造尺度的研究则相对较少。【未来展望】由于日本海缺乏钙质生物沉积,硅藻化石显示出很好的研究潜力。在未来研究中,一方面要发展新指标体系如硅藻稳定同位素并结合硅藻种属组合,以重建日本海晚新生代古生产力的长期演化历史;另一方面需要深入探讨海洋初级生产力与区域构造演化及全球气候变化的联系。

关键词：日本海古生产力古海洋古气候国际大洋钻探计划

East Asian monsoon intensification promoted weathering of the magnesium-rich southern China upper crust and its global significance

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2021年第7期64卷 1155-1170页

作者： Yibo YANG Albert GALY Xiaomin FANG Christian FRANCE-LANORD shiming wan Rongsheng YANG Jian ZHANG Ran ZHANG Song YANG Yunfa MIAO Yudong LIU Chengcheng YE Key Laboratory of Continental Collision and Plateau Uplift Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101China Centre de Recherches Pétrographiques et Géochimiques UMR7358CNRS-Universitéde LorraineVandoeuvre les Nancy 54500France University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Climate Change Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Key Laboratory of Desert and Desertification Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China

The Oligocene-Miocene boundary Asian climatic reorganization linked to the northward migration of the East Asian monsoon into subtropical China is a potentially important but poorly constrained atmospheric CO_(2) consumption ***,we performed a first-order estimate of the CO_(2) consumption induced by silicate chemical weathering and organic carbon burial in subtropical China related to this climatic *** results show that an increase in long-term CO_(2 )consumption by silicate weathering varies from 0.06×10^(12)to 0.87×10^(12)mol yr^(-1)depending on erosion flux reconstructions,with an~50%contribution of Mg-silicate weathering since the late *** organic carbon burial flux is approximately 25%of the contemporary CO_(2) consumption by silicate *** results highlight the significant role of weathering of the Mg-rich upper continental crust in East China,which would contribute to the rapid decline in atmospheric CO_(2) during the late Oligocene and the Neogene rise in the seawater Mg *** this climatic reorganization was mainly induced by the Tibetan Plateau uplift,our study suggests that the growth of the Himalayan-Tibetan Plateau can lead to indirect modification of the global carbon and magnesium cycles by changing the regional hydrological cycle in areas of East Asia that are tectonically less active.

关键词： Tibetan Plateau Late Oligocene Silicate weathering Carbon cycle Oceanic Mg cycle

Loss of scleraxis leads to distinct reduction of mineralized intermuscular bone in zebrafish

在线全文

学校读者我要写书评

暂无评论

Aquaculture and Fisheries 2021年第2期6卷 169-177页

作者： Chunhong Nie shiming wan Yulong Chen Dejie Zhu Xudong wang Xiaoru Dong Ze-Xia Gao College of Fisheries Key Laboratory of Freshwater Animal BreedingMinistry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal GeneticsBreeding and ReproductionMinistry of EducationHuazhong Agricultural UniversityWuhanHubei430070China Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt Ministry of EducationWuhan430070China Hubei Engineering Technology Research Center for Fish Breeding and Healthy Aquaculture Wuhan430070China

Intermuscular bones(IBs)are ossified from tendons and only occur in lower *** association between the regulation of scleraxis gene(scx)and tendon development gave us reasons to speculate that the scx gene may play a potential role in regulating the development of IBs.A phylogenetic analysis conducted for this study revealed potential functional differentiation between two scx orthologues,scxa and *** scxa^(-/-) and scxb^(-/-) zebrafish were generated through CRISPR-Cas9 technology to study the role of scx in the IB and rib *** results showed a significant reduction of the number of IBs in adult scxa-1^(-/-) zebrafish,with almost 70%reduction(15-25 IBs)compared to the wild type scxa-1^(+/+)zebrafish(76-80 IBs).In the scxa-1^(+/+)adults,IBs were observed in both dorsal and tail segments;however,in scxa-1^(-/-)fish IBs were observed only in the tail segment(none in the dorsal segment).Although scxa-1^(-/-) zebrafish had rib defects,the mutants were viable and fertile as adult *** scxb^(-/-) zebrafish had the same number of IBs and same skeletal phenotype as the wild-type *** suggests that only scxa has a crucial role in the IB development,and confirms functional differentiation of scx *** further clarify the molecular mechanism by which scxa affects the IB development,we conducted comparative transcriptome analysis of dorsal tissue samples of scxa-1^(+/+)(with IBs)and scxa-1^(-/-) (without IBs),and further verified the expression of key genes via *** is the first study to identify a gene that controls the amount of IBs in fish,and it provides a new sight into the effects of scxa on the molecular mechanism of IB development in fish.

关键词： Intermuscular bone Scleraxis CRISPR-Cas9 Phenotype Gene expression Gene function

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

海洋沉积物早期成岩作用研究进展

沉积学报 2022年第5期40卷 1172-1187页

作者：董宏坤万世明刘喜停中国科学院海洋研究所中国科学院海洋地质与环境重点实验室山东青岛266071 中国科学院大学北京100049 青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室山东青岛266061 中国海洋大学海洋地球科学学院海底科学与探测技术教育部重点实验室山东青岛266100

海洋沉积物的早期成岩作用是其沉积和埋藏过程中发生的一系列生物、物理和化学变化,其驱动力为有机质的降解,根据反应自由能大小,参与反应的氧化剂顺序为:O_(2)>NO_(3)^(-)>Mn^(4+)>Fe^(3+)>SO_(4)^(2-)。随着埋深增加,形成一系列氧化... 详细信息

海洋沉积物的早期成岩作用是其沉积和埋藏过程中发生的一系列生物、物理和化学变化,其驱动力为有机质的降解,根据反应自由能大小,参与反应的氧化剂顺序为:O_(2)>NO_(3)^(-)>Mn^(4+)>Fe^(3+)>SO_(4)^(2-)。随着埋深增加,形成一系列氧化—还原化学带,并推动着海底沉积物中部分自生矿物的生成及C、N、S、Fe、Mn等元素的地球化学循环和同位素分馏。一系列有机质降解反应会改变原生沉积物中保存的地球化学信息,对古环境和古气候的研究具有重要意义。在早期成岩作用过程中,有机质降解产生的碳酸根离子和钙离子、亚铁离子结合会形成方解石、文石、菱铁矿等碳酸盐矿物。硫酸盐还原产生的还原态硫最终与亚铁离子形成黄铁矿。此外,目前常用于氧化还原环境重建的代用指标有:1)Fe组分;2)C_(org)/P比值;3)氧化还原敏感微量元素;4)Mo、U同位素。围绕海洋沉积物早期成岩作用中的矿物和元素地球化学行为,评述了早期成岩作用过程中有机质降解反应机制,探讨了反应进程中发生的元素地球化学循环和同位素分馏,以及相伴生的碳酸盐矿物和黄铁矿等自生矿物的形成机理。最后,总结了现有研究的不足,并对未来的研究方向进行了展望。

关键词：海洋沉积早期成岩有机质降解自生矿物同位素分馏氧化还原重建