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Palynology of the Early Cretaceous Hanxia Section in the Jiuquan Basin,Northwest China:The discovery of diverse early angiosperm pollen and paleoclimatic significance

Palynology of the Early Cretaceous Hanxia Section in the Jiu...

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中国科学院地质与地球物理研究所2015年度（第15届）学术年会

作者： Mingzhen Zhang Liming Ji Baoxia Du shuang dai Xuewen Hou Key Laboratory of Petroleum Resources Gansu Province/Key Laboratory of Petroleum Resources ResearchInstitute of Geology and GeophysicsChinese Academy of Sciences Key Laboratory of Western China's Mineral Resources of Gansu Province MOE Key Laboratory of Western China's Environmental SystemsLanzhou University State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology

The Lower Cretaceous deposits of the Jiuquan Basin(Northwestern China)located in central Asia are famous for the abundant and diverse fossil products with distinct characteristics of Jehol ***,few early angiosperm remains have been published in their *** study presents a palynomorph record from the recently reported fossil-bearing Zhonggou Formation of the Hanxia Section in the Jiuquan ***,we first discovered abundant and diverse angiosperm pollen with 16 taxa,which can be classified into four morphological types:tricolpate,polyaperturate,monosulcate and etrachotomocolpate *** palynomorph assemblages contain a large number of biostratigraphically significant palynomorphs,such as numerically abundant tricolpate and rare polyaperturate angiosperm pollen grains,which indicate an Early Albian age for the Zhonggou Formation of the Hanxia *** overall palynomorph assemblage is dominated by the Perinopollenites,followed by the Classopollis;bisaccate pollen indicate Taxodiaceae-dominant vegetation *** such,a relatively temperate and humid climatic condition is suggested for this ***,two palynomorph assemblages can be distinguished in a stratigraphically upward order with an obviously increasing Classopollis content,indicating a gradual aridification trend during the Early *** climatic change may affect the diversification of early angiosperms based on the correlation with the stratigraphic distribution of discovered angiosperm pollen.

关键词： Palynology Early angiosperm Albian Jiuquan Basin China

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可见光粗跟踪成像镜头光机结构设计

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仪器仪表学报 2017年第5期38卷 1190-1197页

作者：王槐代霜范磊赵勇志中国科学院长春光学精密机械与物理研究所长春130033

为某在研地基光学望远镜设备设计了300 mm口径的可见光粗跟踪成像镜头的光机结构。采用弯月形结构优化使主镜重量减少了41.2%。针对传统胶粘接固定结构的不足提出了采用弹性压紧方式的主镜支撑结构,采用Patran有限元仿真软件对不同倾角... 详细信息

为某在研地基光学望远镜设备设计了300 mm口径的可见光粗跟踪成像镜头的光机结构。采用弯月形结构优化使主镜重量减少了41.2%。针对传统胶粘接固定结构的不足提出了采用弹性压紧方式的主镜支撑结构,采用Patran有限元仿真软件对不同倾角、不同温度状态下,带支撑的主镜面形精度进行了分析;制定了装调方案,室内采用Zygo干涉仪检测带支撑的主镜面形精度检测结果为0.04λ(RMS),可见光波长λ的设计参考值为0.633μm,长焦端和短焦端的系统波像差均为0.132λ(RMS);室内采用平行光管进行星点检验、分辨率检验和外场对北极星成像试验结果显示,系统成像质量满足设备要求;验证了主镜支撑结构和镜头光机结构设计的合理性,为研制同类型镜头的光机结构提供了设计依据和技术途径。

关键词：可见光镜头成像主镜支撑光机结构

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空间遥感相机电子学仿真专家系统

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微计算机信息 2006年第1S期22卷 232-234页

作者：代霜徐抒岩长春中科院长春光学精密机械与物理研究所空间部 130033 中国科学院研究生院

根据空间遥感相机的特点,提出了应用于空间遥感相机电子学部分测试的方法。结合关系数据库技术建立了仿真专家系统的知识库及推理机制。提出的正反推理相结合的推理方案提高了系统的推理效率,实现了快速全面的对空间遥感相机电子学部分... 详细信息

根据空间遥感相机的特点,提出了应用于空间遥感相机电子学部分测试的方法。结合关系数据库技术建立了仿真专家系统的知识库及推理机制。提出的正反推理相结合的推理方案提高了系统的推理效率,实现了快速全面的对空间遥感相机电子学部分的测试。

关键词：空间遥感相机关系数据库专家系统知识库

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大接触角推力球轴承接触的有限元仿真研究

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计算机仿真 2013年第1期30卷 305-309页

作者：王槐代霜中国科学院长春光学精密机械与物理研究所吉林长春130033

在精密回转设备的研制过程中,由于轴承高回转中存在低晃动误差,影响精度。为分析大接触角推力球轴承的接触特性,依据经典的赫兹弹性接触理论,计算了轴承的静载荷特性参数。结果表明:轴承承载能力满足设计要求。为验证理论分析,采用有限... 详细信息

在精密回转设备的研制过程中,由于轴承高回转中存在低晃动误差,影响精度。为分析大接触角推力球轴承的接触特性,依据经典的赫兹弹性接触理论,计算了轴承的静载荷特性参数。结果表明:轴承承载能力满足设计要求。为验证理论分析,采用有限元法结合ANSYS软件进行了非线性仿真验证。分析了接触刚度(FKN)、渗透容差(FTOLN)、接触算法、非对称接触选择、摩擦系数和初始间隙调整等关键参数,并给出了推荐值。轴承承载后接触应力和弹性趋近量与理论计算结果间的误差分别为1.4%和3.2%。验证了分析过程的合理性,为轴承研制的工程问题提供了可靠的设计依据。

关键词：大接触角推力球轴承赫兹接触理论有限元接触仿真

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LPS induces mGluR5 expression of neutrophils in p65-dependent manner

LPS induces mGluR5 expression of neutrophils in p65-dependen...

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中国生物化学与分子生物学会2019年全国学术会议暨学会成立四十周年

作者： Yang-Wuyue Liu Mi Zhou Li Zhao Teng Yang Xu Tan Shan Chen shuang-shuang dai Department of Biochemistry and Molecular Biology College of Basic Medical Sciences Army Military Medical University (Third Military Medical University)

Lip polysaccharide(LPS) is an important pathogenic stimulator to activate neutrophils. Metabotropic glutamate receptor 5(mGluR5) is highly expressed in central nervous system that modulates glutamate release and circuits activity. However, the roles and functions of mGluR5 in peripheral systems especially on neutrophils are poorly understood. Here we found that LPS induced both mRNA and protein expressions of mGluR5 in neutrophils. Activation of mGluR5 promotes p65 nuclear translocation in PKC-dependent manner. The ability of cytokines releasing and migration toward LPS treatment in mGluR5 KO neutrophils was dramatically impaired compared with WT neutrophils. Furthermore, LPS induced mGluR5 expression by enhancing p65 binding to mGluR5 upstream promoter element(-779 to-113), which was confirmed by Luciferace and CHIP experiments. These findings demonstrate that induction of mGluR5 by LPS is vital for neutrophils activation, which unveils the inducible functionality of mGluR5 in neutrophils.

关键词： LPS neutrophil,p65 mGluR5

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Biohythane production from two-stage anaerobic digestion of food waste:A review

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Journal of Environmental Sciences 2024年第5期139卷 334-349页

作者： Xiaona An Ying Xu Xiaohu dai State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

The biotransformation of food waste(FW)to bioenergy has attracted considerable research attention as a means to address the energy crisis and waste disposal *** this end,a promising technique is two-stage anaerobic digestion(TSAD),in which the FW is transformed to biohythane,a gaseous mixture of biomethane and *** review summarises the main characteristics of FW and describes the basic principle of ***,the factors influencing the TSAD performance are identified,and an overview of the research status;economic aspects;and strategies such as pre-treatment,co-digestion,and regulation of microbial consortia to increase the biohythane yield from TSAD is ***,the challenges and future considerations associated with the treatment of FW by TSAD are *** paper can provide valuable reference for the improvement and widespread implementation of TSAD-based FW treatment.

关键词： Two-stage anaerobic digestion(TSAD) Food waste(FW) Methane production Hydrogen production

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State of the art of lightweight aggregates used in lightweight refractories for working lining of high-temperature furnaces

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Journal of Iron and Steel Research International 2024年第6期31卷 1320-1343页

作者： Wei Zhang Wen-yong dai Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina Research and Development Department AGC Plibrico(Dalian)Industries Inc.Dalian 116600LiaoningChina

Lightweight refractories for the working lining of high-temperature furnaces play an important role in the smelting of advanced steels and *** prepare lightweight refractories for the working lining of high-temperature furnaces,the synthesis of lightweight aggregates is the ***,the research on the synthesis of lightweight aggregates with high service temperature,low thermal conductivity,high strength,and good slag resistance has received widespread *** available literature on the synthesis of lightweight aggregates was summarized,including corundum,mullite,mullite-corundum,spinel,corundum-spinel,cordierite,cordierite-mullite,calcium hexaluminate,corundum-calcium hexaluminate,bauxite,magnesia,magnesia-based,and forsterite-based ***,the future development trend of lightweight aggregates was proposed.

关键词： Lightweight aggregate Lightweight refractory Working lining Apparent porosity Closed porosity Thermal conductivity Pore-forming approach

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Impacts of external forcing and internal variability on the North Atlantic multidecadal variations since 1950

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Science China Earth Sciences 2024年第8期67卷 2699-2701页

作者： Wenjian HUA Aiguo dai Key Laboratory of Meteorological Disaster Ministry of Education/Collaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersNanjing University of Information Science and TechnologyNanjing 210044China Department of Atmospheric and Environmental Sciences University at AlbanyState University of New YorkAlbany 12222USA

The physical formation mechanisms of the Atlantic Multidecadal Variability(AMV)in the context of global warming have been a key research topic(Vecchi et al.,2017).The conventional view is that the AMV is mainly driven by internal dynamics within the climate system,especially in the Atlantic Ocean(Zhang et al.,2019).However,some studies suggest that decadal to multidecadal variations in North Atlantic sea surface temperature(SST)since around 1950 are related to anthropogenic and natural aerosol emissions(Otter?et al.,2010;Booth et al.,2012;Hua et al.,2019).

关键词： Atlantic decadal forcing

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教育创强中的基础教育改革与发展——与广州市教育局局长华同旭博士访谈录

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教育导刊（上半月） 2005年第10期 4-7页

作者：戴双翔本刊记者

当前,广州市创新教育强市工作正在如火如荼地展开.基础教育作为创强的重中之重,也正在进行积极的重组、整合与变革.

关键词：教育改革与发展教育局局长广州市博士访谈录教育强市重中之重基础教育

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On-demand molecular design for efficient blue phosphorescence

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Science China Chemistry 2024年第7期67卷 2124-2126页

作者： Meiqi dai Dongpeng Yan Beijing Key Laboratory of Energy Conversion and Storage Materials Key Laboratory of RadiopharmaceuticalsMinistry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875China

Blue luminescence(including both fluorescence and phosphorescence)is one of the core elements in solid-state lighting and full-color *** to now,ultralong room temperature phosphorescence(RTP)with a long lifetime over 0.1 s has been continuously *** ultralong phosphorescence emission bands are in the region of 500 to600 ***,high-energy blue phosphorescence remains an immense challenge[1].

关键词： blue lifetime bands

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