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巴音戈壁盆地巴北凹陷G4井火山岩锆石U-Pb年代学及其地质意义

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铀矿地质 2024年第3期40卷 417-427页

作者：张海云刘波李鹏叶茂邢亚杰核工业二〇八大队内蒙古包头014010

巴北凹陷是巴音戈壁盆地西部拐子湖坳陷的一个次级构造单元,近年来凹陷内取得了一定的铀矿找矿成果,但是总体的工作程度较低,地层的划分对比一直存在较大争议,深部火山岩未做过年代学研究,地质年代尚不明确。为了精确划分凹陷内的沉积盖... 详细信息

巴北凹陷是巴音戈壁盆地西部拐子湖坳陷的一个次级构造单元,近年来凹陷内取得了一定的铀矿找矿成果,但是总体的工作程度较低,地层的划分对比一直存在较大争议,深部火山岩未做过年代学研究,地质年代尚不明确。为了精确划分凹陷内的沉积盖层,明确找矿目的层,本次研究选取了凹陷北部G4线剖面进行细致解剖,系统采取样品进行岩石学、锆石U-Pb年代学研究,以期为以上问题提供证据。分析结果表明,钻井深部玄武岩所测得的锆石年龄有两组,分别为(126±4.2)ma、(243.5±1.7)ma,两组锆石均为岩浆成因锆石,第一组年龄代表该套火山岩的形成时代,即早白垩世中期,第二组年龄代表火山活动捕获的早期岩浆锆石年龄。玄武岩的形成时代很好地约束了地层的形成时代,说明该层玄武岩所在地层为下白垩统苏红图组下段。基于火山岩年龄的核定,对区内沉积盖层进行了精细化划分,总结了地层划分标志,结合沉积体系、地层铀含量等综合分析,厘定了下白垩统银根组为主要的铀矿找矿目的层。

关键词：玄武岩 U-Pb定年地层划分苏红图组巴北凹陷沉积体系

维普期刊数据库博看期刊

C-reactive protein:a link between inflammation and atherosclerosis

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C-reactive protein:a link between inflammation and atheroscl...

不同稻田冬茬绿肥对土壤养分、酶活性和微生物数量的影响

中国生物化学与分子生物学会第十届会员代表大会暨全国学术会议

作者： Shangrong Ji Mingyu Wang haiyun Li Le ma Yi Wu School of Life Sciences Lanzhou University

Atherosclerosis and its complications,in particular acute coronary heart disease is the leading cause of morbidity and mortality *** plays a central role in all stages of atherosclerosis from the initiation of atheroma to plaque rupture.C-reactive protein(CRP),one of the prototypic human acute phase reactant,has important functions in host defense and *** evidence indicates that CRP is not merely a predictor

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中国农学通报 2024年第26期40卷 46-52页

作者：马晓吕卫光蔡文倩余婷张月张海韵汤勇华董月霞张翰林生态环境部土壤与农业农村生态环境监管技术中心北京100012 上海市农业科学院生态环境保护研究所上海201403 农业农村部东南沿海农业绿色低碳重点实验室上海201403 农业部上海农业环境与耕地保育科学观测实验站上海201403 上海市农业科技服务中心上海200335

本研究通过分析上海青浦地区不同稻田冬茬绿肥翻压后的土壤养分性质、酶活性和微生物数量等指标,采用灰色关联度分析,综合筛选出最有利于土壤培肥的、适宜当地种植的稻田冬茬绿肥轮作模式。本试验设置3个稻田冬茬绿肥处理:紫云英处理(ZY... 详细信息

本研究通过分析上海青浦地区不同稻田冬茬绿肥翻压后的土壤养分性质、酶活性和微生物数量等指标,采用灰色关联度分析,综合筛选出最有利于土壤培肥的、适宜当地种植的稻田冬茬绿肥轮作模式。本试验设置3个稻田冬茬绿肥处理:紫云英处理(ZY)、蚕豆处理(CD)、油菜处理(YC)。结果表明:(1)不同绿肥轮作模式对于土壤pH、土壤全氮和全磷含量影响均未达到显著性水平,CD和ZY处理土壤全钾含量无显著差异,但均显著高于YC处理;土壤有机质含量顺序为CD>YC>ZY;ZY处理土壤有效磷含量比CD和YC分别高出12.60%和28.70%,YC处理则速效氮和有效钾含量均为最高水平。(2)各绿肥处理的过氧化氢酶和纤维素酶活性无显著性差异,CD处理和YC处理下土壤脲酶活性均显著高于ZY处理,CD处理土壤蔗糖酶活性分别比ZY和YC高出22.10%和55.17%。(3)CD处理土壤细菌、真菌和放线菌数量均处于最高水平,均显著高于ZY处理。(4)绿肥产量与土壤有机质含量、土壤脲酶活性、土壤真菌数量和放线菌数量均呈现显著正相关,其中与土壤脲酶活性的相关性较高(PYC>ZY。综合比较,水稻蚕豆轮作是最适宜试验地区的稻田冬茬绿肥轮作模式。

关键词：稻田冬茬绿肥土壤养分性质土壤酶活性土壤微生物灰色关联度分析

Effect of Thermal Aging on Breakdown Strength of Epdm Rubber

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Effect of Thermal Aging on Breakdown Strength of Epdm Rubber

第三届材料科学应用与能源材料国际研讨会

作者： Ruocheng Wang Yunyi He Zhao Wang Hongwei Kang Jiawei ma haiyun Jin State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Wuxi power supply branch of state grid jiangsu electric power co.LTD

This paper takes the Ethylene Propylene Diene Monomer（EPDM） insulation layer of 220 kV integral prefabricated cable joint as the research object, performs accelerated thermal aging experiments at 130℃, 145℃, and 160℃, and then conducted Fourier Transform Infrared spectroscopy（FTIR）, Thermogravimetric Analysis（TGA） and power frequency breakdown strength test successively. The experimental results show that thermal aging results in long molecular chain degradation, bond breaking and oxidation of *** initial decomposition temperature decreases gradually with the aging time and the thermal stability decreases gradually under the action of thermal aging. The breakdown field strength decreased by 13.3%, 21.2% and 22.5% respectively at the end of thermal aging, and the decline rate increased with the aging temperature. The main reasons for the decrease of breakdown strength are the precipitation of crosslinking agent, the breaking down of molecular chain and the generation of oxygen-containing groups.

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理工科专业课程教学融入思政元素的方法探索

安徽工业大学学报（社会科学版） 2024年第1期41卷 80-82页

作者：陈立明夏爱林丁健翔俞海云邓先功陈翔安徽工业大学材料科学与工程学院安徽马鞍山243002

课程思政是将思想政治教育与专业课程教学相融合,形成协同效应。专业课教师要有实施课程思政的主体意识,并根据学生的兴趣进行合理的教学设计。课前进行师生平等沟通交流获取学生兴趣点等信息,课中教师注重结合实际采用多样化教学方法,... 详细信息

课程思政是将思想政治教育与专业课程教学相融合,形成协同效应。专业课教师要有实施课程思政的主体意识,并根据学生的兴趣进行合理的教学设计。课前进行师生平等沟通交流获取学生兴趣点等信息,课中教师注重结合实际采用多样化教学方法,课后对教与学的情况进行有效反馈,从而将思政元素有效融入专业课程。

关键词：专业课程课程思政思政元素

Plant multiscale networks:charting plant connectivity by multi-level analysis and imaging techniques

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Science China(Life Sciences) 2021年第9期64卷 1392-1422页

作者： Xi Zhang Yi man Xiaohong Zhuang Jinbo Shen Yi Zhang Yaning Cui Meng Yu Jingjing Xing Guangchao Wang Na Lian Zijian Hu Lingyu ma Weiwei Shen Shunyao Yang Huimin Xu Jiahui Bian Yanping Jing Xiaojuan Li Ruili Li Tonglin mao Yuling Jiao Sodmergen haiyun Ren Jinxing Lin Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Beijing Forestry UniversityBeijing 100083China College of Biological Sciences and Biotechnology Beijing Forestry UniversityBeijing 100083China School of Life Sciences Centre for Cell&Developmental Biology and State Key Laboratory of AgrobiotechnologyThe Chinese University of Hong KongHong Kong 999077China State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China Key Laboratory of Cell Proliferation and Regulation Biology Ministry of EducationCollege of Life ScienceBeijing Normal UniversityBeijing 100875China Key Laboratory of Plant Stress Biology School of Life SciencesHenan UniversityKaifeng 457004China College of Biological Sciences China Agricultural UniversityBeijing 100193China State Key Laboratory of Plant Physiology and Biochemistry Department of Plant SciencesCollege of Biological SciencesChina Agricultural UniversityBeijing 100193China State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of Sciencesand National Center for Plant Gene ResearchBeijing 100101China Key Laboratory of Ministry of Education for Cell Proliferation and Differentiation College of Life SciencesPeking UniversityBeijing 100871China

In multicellular and even single-celled organisms,individual components are interconnected at multiscale levels to produce enormously complex biological networks that help these systems maintain homeostasis for development and environmental *** biology studies initially adopted network analysis to explore how relationships between individual components give rise to complex biological *** analysis has been applied to dissect the complex connectivity of mammalian brains across different scales in time and space in The Human Brain *** plant science,network analysis has similarly been applied to study the connectivity of plant components at the molecular,subcellular,cellular,organic,and organism *** of these multiscale networks contributes to our understanding of how genotype determines *** this review,we summarized the theoretical framework of plant multiscale networks and introduced studies investigating plant networks by various experimental and computational *** next discussed the currently available analytic methodologies and multi-level imaging techniques used to map multiscale networks in ***,we highlighted some of the technical challenges and key questions remaining to be addressed in this emerging field.

关键词： multiscale network connectivity cytoskeleton membrane contact site organelle interaction multicellularity connectome cytoarchitecture topological analysis multi-level imaging techniques

Ultra-sensitive Dirac-point-based biosensing on terahertz metasurfaces comprising patterned graphene and perovskites

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Photonics Research 2022年第2期10卷 280-288页

作者： Xin Yan Tengteng Li Guohong ma Ju Gao Tongling Wang haiyun Yao maosheng Yang Lanju Liang Jing Li Jie Li Dequan Wei Meng Wang Yunxia Ye Xiaoxian Song Haiting Zhang Chao ma Yunpeng Ren Xudong Ren Jianquan Yao School of Opto-electronic Engineering Zaozhuang UniversityZaozhuang 277160China College of Precision Instruments and Opto-electronics Engineering Tianjin UniversityTianjin 300072China Department of Physics School of ScienceShanghai UniversityShanghai 200444China School of Telecommunications Qilu University of TechnologyJinan 250306China Institute of Micro-nano Optoelectronics and Terahertz Technology College of Information Science and EngineeringJiangsu UniversityZhenjiang 212013China

Biosensors are a focus of research on terahertz metasurfaces. However, reports of ultra-sensitive biosensors based on Dirac points are rare. Here, a new terahertz metasurface is proposed that consists of patterned graphene and perovskites. This serves as an ultra-sensitive Dirac-point-based biosensor for qualitative detection of ***, sericin may make graphene n-doped and drive the Fermi level to shift from the valence band to the Dirac point, causing a dramatic decrease in conductivity. Correspondingly, the dielectric environment on the metasurface undergoes significant change, which is suited for ultra-sensitive biosensing. In addition, metal halide perovskites, which are up-to-date optoelectronic materials, have a positive effect on the phase during terahertz wave transmission. Thus, this sensor was used to successfully detect sericin with a detection limit of 780 pg/m L, achieved by changing the amplitude and phase. The detection limit of this sensor is as much as one order of magnitude lower than that of sensors in published works. These results show that the Dirac-pointbased biosensor is a promising platform for a wide range of ultra-sensitive and qualitative detection in biosensing and biological sciences.

关键词： qualitative point perovskite

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粒子滤波算法在数据同化中的应用研究进展

遥感技术与应用 2014年第5期29卷 701-710页

作者：毕海芸马建文中国科学院遥感与数字地球研究所北京100094 中国科学院大学北京100049

数据同化能将观测数据和模型模拟有机结合,优势互补,成为全球环境变化研究的重要方法之一。在数据同化算法的发展过程中,粒子滤波算法不受模型线性和误差高斯分布假设的约束,成为当前数据同化算法研究的重点。通过对粒子滤波算法在数据... 详细信息

数据同化能将观测数据和模型模拟有机结合,优势互补,成为全球环境变化研究的重要方法之一。在数据同化算法的发展过程中,粒子滤波算法不受模型线性和误差高斯分布假设的约束,成为当前数据同化算法研究的重点。通过对粒子滤波算法在数据同化中应用研究进展的相关文献进行收集、整理和归纳,总结了粒子滤波算法的优势及在数据同化中的应用,并分析了粒子滤波算法应用于数据同化时所存在的主要问题和相应的解决方法,最后展望了未来的研究重点及发展趋势,为深入开展粒子滤波算法研究、使之更好地应用于数据同化领域提供理论依据。

关键词：全球环境变化数据同化粒子滤波

Banach空间中可数拟-φ-非扩张映像族的公共不动点的收敛定理

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数学年刊（A辑） 2010年第5期31卷 565-570页

作者：周海云马丙坤石家庄军械工程学院应用数学研究所石家庄050003 石家庄军械工程学院数学系石家庄050003

在某些Banach空间中针对一类闭的拟-φ-非扩张映像的可数无限族,修正经典的正规mann迭代算法以达到强收敛的目标,所得结果改进并扩展了matsushita和Takahashi等人的相关结果.

关键词：收敛定理修正的杂交算法公共不动点