检索结果-南通市图书馆

Acta Oceanologica Sinica 2018年第10期37卷 86-90页

作者： chen xumiao XU Kuidong Department of Marine Organism Taxonomy and Phylogeny Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology (Qingdao) Qingdao 266237 China University of Chinese Academy of Sciences Beijing 100049 China

The living morphology and infraciliature of six spirotrichous ciliates collected from the coastal South China Sea were investigated using live observation and protargol impregnation. These are Euplotes woodruffi Gaw, 1939, Hemigastrostyla enigmatica （Dragesco and Dragesco-Kerneis, 1986） Song and Wilbert, 1997, Neourostylopsis flavicana （Wang et al., 2011） chen et al., 2013, Protogastrostyla pulchra （Perejaslawzewa, 1886） Gong et al., 2007, Pseudoamphisiella alveolata （Kahl, 1932） Song and Warren, 2000, and PseudokahlieUa marina （Foissner et al., 1982） Berger et al., 1985. Among these, Protogastrostyla pulchra, Pseudoamphisiella alveolata and PseudokahlieUa marina are reported from the South China Sea for the first time, which manifest obvious differences apart from other Chinese populations. As new contribution, the detailed description of isolates from mangrove habitat of E. woodruffi and 1t. enigmatica, and aquaculture pond isolate of ***, are present.

关键词： South China Sea new record ciliates Spirotrichea taxonomy

Evolution of discocephalid ciliates:Molecular,morphological and ontogenetic data support a sister group of discocephalids and pseudoamphisiellids (Protozoa,Ciliophora) with establishment of a new suborder Pseudoamphisiellina subord.n.

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2011年第7期54卷 634-641页

作者： MIAO Miao SHAO chen chen xumiao SONG WeiBo Laboratory of Protozoology Institute of Evolution and Marine Biodiversity Ocean University of China Qingdao 266003 China School of Life Science and Technology Xi' an Jiaotong University Xi'an 710049 China

Discocephalids and pseudoamphisiellids are possibly two of the most confused groups among hypotrichous/euplotid ciliates regarding their systematic position and phylogenetic *** former were often regarded as related to euplotids while the latter,in the absence of molecular data,were mostly assigned to the urostylid-like *** the present work,the small subunit rRNA genes of several rarely observed discocephalid and pseudoamphisiellid genera were analyzed to obtain insights into the phylogenetic relationships of these highly ambiguous *** different tree reconstruction algorithms yielded nearly identical topologies,which indicated both groups belong to the same *** assemblage is clearly isolated as a deep-branching clade and invariably positioned between Euplotida and *** sister group relationship of the Pseudoamphisiellidae and Discocephalidae supports the previous suggestion that they might represent an ordinal taxon,the *** morphological and morphogenetic features indicate that the pseudoamphisiellids should be placed in the order Discocephalida but as a sister group to other typical *** we propose establishing a new suborder,Pseudoamphisiellina *** new taxon is diagnosed by the following characteristics:(i) two distantly separated midventral rows that are morphogenetically formed with an urostylid mode;(ii) absence of the "frontoterminal row",which is formed from the posterior-most frontoventral-transverse cirral anlage in all other typical urostylids;(iii) numerous caudal cirri that derive from each of the dorsal kinety anlagen;(iv) right marginal row that has a unique de novo origin;and (v) inhabiting periphytic *** validity of the suborder Pseudoamphisiellina is firmly supported by molecular data.

关键词： Ciliophora Discocephalida Pseudoamphisiellina subord n. new suborder phylogeny SSU rRNA gene

蛮族想象与殖民扩张——十九世纪西方视野中的台湾地区少数民族形象

在线全文

学校读者我要写书评

暂无评论

闽台文化研究 2023年第2期 15-22页

作者：肖魁伟陈绪苗闽南师范大学文学院福建漳州363000

鸦片战争后大批西方人在殖民欲望的驱使下,来到台湾地区旅行、探险、传教、经商等,并留下大量关于台湾地区少数民族的记录文本,从而建构了西方人视野中的台湾地区少数民族形象。台湾地区“熟番”“平埔番”等少数民族被建构为“半开化... 详细信息

鸦片战争后大批西方人在殖民欲望的驱使下,来到台湾地区旅行、探险、传教、经商等,并留下大量关于台湾地区少数民族的记录文本,从而建构了西方人视野中的台湾地区少数民族形象。台湾地区“熟番”“平埔番”等少数民族被建构为“半开化”形象,而“生番”“野番”、傀儡番等则被建构为“未开化”形象。前者被西方人视为可以利用的“朋友”,后者则被视为西方“文明”的敌人,欲剿除而后快。西方人所建构的台湾地区少数民族形象背后,承载了殖民台湾地区的欲望与企图。

关键词：台湾地区少数民族西方殖民者形象建构

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

某超高层项目施工模拟分析

广东土木与建筑 2021年第8期28卷 31-35页

作者：陈旭淼苏恒强吴桂广广东省建筑设计研究院有限公司广州510010

针对建筑核心筒超前爬模施工方法进行施工阶段的分析,且考虑施工过程中的混凝土强度时效性及施工荷载不利工况对主体受力的影响,对施工过程中的超前部分进行仿真分析,寻找薄弱部位或承载力不足的构件,是对结构整体设计的必要补充,也是... 详细信息

针对建筑核心筒超前爬模施工方法进行施工阶段的分析,且考虑施工过程中的混凝土强度时效性及施工荷载不利工况对主体受力的影响,对施工过程中的超前部分进行仿真分析,寻找薄弱部位或承载力不足的构件,是对结构整体设计的必要补充,也是建筑安全生产的关键步骤之一。

关键词：施工模拟剪力墙稳定混凝土时效性屈曲分析整体稳定

Role of the Greenland Sea ice anomaly in the late-spring drought over Northwest China

在线全文

学校读者我要写书评

暂无评论

Atmospheric and Oceanic Science Letters 2025年第1期18卷 1-5页

作者： Yang Liu Huopo chen Nansen-Zhu International Research Centre Institute of Atmospheric Physics Chinese Academy of SciencesBeijingChina Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University for Information Science and TechnologyNanjingChina

Drought across Northwest China in late spring has exerted a vital effect on the local climate and agricultural production,and has been alleviated during the past *** study explored the influence of the preceding Arctic sea ice on the May drought in Northwest China caused by the precipitation *** analysis indicated that when the Greenland Sea ice concentration is abnormally high during February to April,the dry conditions in Northwest China tend to be *** increase of sea ice in the Greenland Sea can excite a meridional circulation,which causes sea surface temperature(SST)anomalies in the North Atlantic via the sea-air interaction,manifested as significant warm SST anomalies over the south of Greenland and the subtropical North Atlantic,but negative SST anomalies over the west of the *** abnormal SST pattern maintains to May and triggers a zonal wave train from the North Atlantic through Scandinavia and Central Asia to Northwest China,leading to abnormal cyclones in Northwest ***,Northwest China experiences a more humid climate than usual.

关键词： Arctic sea ice Greenland Sea North Atlantic SST Drought Northwest China

Cell polarization in ischemic stroke: molecular mechanisms and advances

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 632-645页

作者： Yuanwei Li Xiaoxiao Xu Xuan Wu Jiarui Li Shiling chen Danyang chen Gaigai Li Zhouping Tang Department of Neurology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

Ischemic stroke is a cerebrovascular disease associated with high mortality and disability rates. Since the inflammation and immune response play a central role in driving ischemic damage, it becomes essential to modulate excessive inflammatory reactions to promote cell survival and facilitate tissue repair around the injury site. Various cell types are involved in the inflammatory response, including microglia, astrocytes, and neutrophils, each exhibiting distinct phenotypic profiles upon stimulation. They display either proinflammatory or anti-inflammatory states, a phenomenon known as ‘cell polarization.’ There are two cell polarization therapy strategies. The first involves inducing cells into a neuroprotective phenotype in vitro, then reintroducing them autologously. The second approach utilizes small molecular substances to directly affect cells in vivo. In this review, we elucidate the polarization dynamics of the three reactive cell populations(microglia, astrocytes, and neutrophils) in the context of ischemic stroke, and provide a comprehensive summary of the molecular mechanisms involved in their phenotypic switching. By unraveling the complexity of cell polarization, we hope to offer insights for future research on neuroinflammation and novel therapeutic strategies for ischemic stroke.

关键词： astrocyte polarization immune regulation inflammation ischemic injury microglia polarization neutrophil polarization signaling pathways stroke

Engineering atomic Rb-N configurations to tune radical pathways for highly selective photocatalytic H2O2 synthesis coupled with biomass valorization

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 215-225页

作者： Jiaye Li Shuang Pan Yihuang chen Qiong Liu College of Chemistry and Materials Engineering Wenzhou University Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology (China) Institute of Analysis Guangdong Academy of Sciences (China National Analytical CenterGuangzhou)

Photocatalytic oxygen reduction for hydrogen peroxide （H2O2） synthesis presents a green and costeffective production ***,achieving highly selective H2O2synthesis remains challenging,necessitating precise control over free radical reaction pathways and minimizing undesirable oxidative ***,we report for the visible light-driven simultaneous co-photocatalytic reduction of O2to H2O2and oxidation of biomass using the atomic rubidium-nitride modified carbon nitride（CNRb）.The optimized CNRb catalyst demonstrates a record photoreduction rate of 8.01 mM h-1for H2O2generation and photooxidation rate of 3.75 mM h-1for furfuryl alcohol to furoic acid,achieving a remarkable solar-to-chemical conversion （SCC） efficiency of up to 2.27%.Experimental characterizations and DFT calculation disclosed that the introducing atomic Rb–N configurations allows for the high-selective generation of superoxide radicals while suppressing hydroxyl free radical *** is because the Rb–N serves as the new alternative site to perceive a stronger connection position for O2adsorption and reinforce the capability to extract protons,thereby triggering a high selective redox product *** study holds great potential in precisely regulating reactive radical processes at the atomic level,thereby paving the way for efficient synthesis of H2O2coupled with biomass valorization.

关键词： Atomic economy Radical pathway regulation Rubidium atom coordination Biomass valorization

Influence of China’s Overseas power stations on the electricity status of their host countries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Digital Earth 2022年第1期15卷 416-436页

作者： xumiao Gao Mingquan Wu Chao Li Zheng Niu Fang chen Wenjiang Huang State Key Laboratory of Remote Sensing Science Aerospace Information Research InstituteChinese Academy of SciencesBeijingPeople’s Republic of China University of Chinese Academy of Sciences BeijingPeople’s Republic of China Jinan Geotechnical Investigation and Surveying Institute JinanPeople’s Republic of China Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijingPeople’s Republic of China

China has become a major investor and constructor of electrical power plants in developing ***,the impacts of China's overseas power stations(COPSs)on the developing countries hosting them are poorly ***,a novel method is proposed to evaluate the influence of COPSs in 80 host ***,their electricity consumption from 1971 to 2017 was estimated using data provided by the World Bank,International Energy Agency,and World Resources *** analysis was then used to predict consumption from 2018 to ***,three parameters were used to evaluate the influences of *** results show that:1)COPSs significantly increased the total installed capacity of 35 of the host countries by>20%.2)The power generated by COPSs is greater than the growing demands of 32 of the host countries.3)COPSs will increase the per capita electricity consumption of all 80 host countries.4)Among the 437 COPSs existing in 2000–2019,renewable power plants(including hydropower)were most numerous,accounting for 51.3%.This proportion increased significantly after 2013 and renewable plants will continue to dominate as China will no longer invest in new coal-fired power stations after 2021.

关键词： Influence of China’s overseas power stations Belt and Road Initiative electricity status renewable sources of energy SDG7

Multi-layer multi-pass friction rolling additive manufacturing of Al alloy:Toward complex large-scale high-performance components

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

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 425-438页

作者： Haibin Liu Run Hou chenghao Wu Ruishan Xie Shujun chen College of Mechanical&Energy Engineering Beijing University of TechnologyBeijing 100124China Chongqing Research Institute of Beijing University of Technology Chongqing 401121China

At present,the emerging solid-phase friction-based additive manufacturing technology,including friction rolling additive man-ufacturing(FRAM),can only manufacture simple single-pass *** this study,multi-layer multi-pass FRAM-deposited alumin-um alloy samples were successfully prepared using a non-shoulder tool *** material flow behavior and microstructure of the over-lapped zone between adjacent layers and passes during multi-layer multi-pass FRAM deposition were studied using the hybrid 6061 and 5052 aluminum *** results showed that a mechanical interlocking structure was formed between the adjacent layers and the adja-cent passes in the overlapped center *** friction and rolling of the tool head led to different degrees of lateral flow and plastic deformation of the materials in the overlapped zone,which made the recrystallization degree in the left and right edge zones of the over-lapped zone the highest,followed by the overlapped center zone and the non-overlapped *** tensile strength of the overlapped zone exceeded 90%of that of the single-pass deposition *** is proved that although there are uneven grooves on the surface of the over-lapping area during multi-layer and multi-pass deposition,they can be filled by the flow of materials during the deposition of the next lay-er,thus ensuring the dense microstructure and excellent mechanical properties of the overlapping *** multi-layer multi-pass FRAM deposition overcomes the limitation of deposition width and lays the foundation for the future deposition of large-scale high-performance components.

关键词： aluminum alloy additive manufacturing solid-state friction stir welding multi-layer multi-pass

Brain region-specific roles of brain-derived neurotrophic factor in social stress-induced depressive-like behavior

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第1期20卷 159-173页

作者： Man Han Deyang Zeng Wei Tan Xingxing chen Shuyuan Bai Qiong Wu Yushan chen Zhen Wei Yufei Mei Yan Zeng Brain Science and Advanced Technology Institute Wuhan University of Science and TechnologyWuhanHubei ProvinceChina Geriatric Hospital Affiliated to Wuhan University of Science and Technology WuhanHubei ProvinceChina School of Public Health Wuhan University of Science and TechnologyWuhanHubei ProvinceChina

Brain-derived neurotrophic factor is a key factor in stress adaptation and avoidance of a social stress behavioral *** studies have shown that brain-derived neurotrophic factor expression in stressed mice is brain region–specific,particularly involving the corticolimbic system,including the ventral tegmental area,nucleus accumbens,prefrontal cortex,amygdala,and *** how brain-derived neurotrophic factor participates in stress processing in different brain regions will deepen our understanding of social stress *** this review,we discuss the expression and regulation of brain-derived neurotrophic factor in stress-sensitive brain regions closely related to the pathophysiology of *** focused on associated molecular pathways and neural circuits,with special attention to the brain-derived neurotrophic factor–tropomyosin receptor kinase B signaling pathway and the ventral tegmental area–nucleus accumbens dopamine *** determined that stress-induced alterations in brain-derived neurotrophic factor levels are likely related to the nature,severity,and duration of stress,especially in the above-mentioned brain regions of the corticolimbic ***,BDNF might be a biological indicator regulating stress-related processes in various brain regions.

关键词： amygdala chronic mild stress chronic social defeat stress corticolimbic system depression hippocampus medial prefrontal cortex nucleus accumbens social stress models ventral tegmental area