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A lunar time scale from the perspective of the Moon’s dynamic evolution

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Science China Earth Sciences 2024年第1期67卷 234-251页

作者： Dijun GUO Jianzhong LIU James WHEAD fuqin ZHANG Zongcheng LING Shengbo CHEN Jianping CHEN Xiaozhong DING Jinzhu JI Ziyuan OUYANG State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Center for Lunar and Planetary Sciences Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China Department of Earth Environmental and Planetary SciencesBrown UniversityProvidence RI 02912USA Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment Institute of Space SciencesShandong UniversityWeihai 264209China College of Geoexploration Science and Technology Jilin UniversityChangchun 130026China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China School of Resources and Environmental Engineering Inner Mongolia University of TechnologyHohhot 010051China Center for Excellence in Comparative Planetology Chinese Academy of SciencesHefei 230026China

A geologic time scale is a chronological system that separates the geological strata of a planetary body into different units in temporal sequence and shows its progressive *** time scale of the Moon was established a half-century ago during the telescopic-early Apollo exploration era,using data with limited spatial coverage and *** past decades have seen a wide array of studies,which have significantly extended our understanding of global lunar geologic *** on a comprehensive review of lunar evolution with respect to the dynamical changes,we propose two major updates to the current lunar time scale paradigm to include the evolution of both endogenic and exogenic dynamic forces now known to have influenced early lunar ***,based on the temporal interplay of exogenic and endogenic processes in altering the Moon,we defined three Eon/Eonothem-level units to represent three dynamical evolutionary ***,the pre-Nectarian System is redefined and divided as the magma ocean-era Magma-oceanian System and the following Aitkenian System beginning with the South Pole-Aitken *** ejecta of this basin,Das Formation,was deposited on the primordial lunar crust as the oldest stratum produced from exogenic *** updated lunar time scale,facilitated by the post-Apollo exploration and research advances,provides an integrated framework to depict the evolution of the Moon and has important implications for the geologic study of other terrestrial planets.

关键词： The Moon Geologic time scale Evolution history Endogenic process Exogenic process

Embedding Perovskite in Polymer Matrix Achieved Positive Temperature Response with Inversed Temperature Crystallization

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Energy & Environmental Materials 2024年第5期7卷 361-371页

作者： Meiting Peng Xue Guan Yingzhu Wu Nan Zhang Qi Feng Liyong Tian Yancheng Wu Yangfan Zhang Feng Gan fuqin Deng Meilin Huang Guichuan Xing Ningbo Yi College of Textile Science and Engineering Wuyi University Institute of Applied Physics and Materials Engineering University of Macau School of Applied Physics and Materials Wuyi University Faculty of Intelligent Manufacturing Wuyi University

Organic perovskites are promising semiconductor materials for advanced photoelectric applications. Their fluorescence typically shows a negative temperature coefficient due to bandgap change and structural instability. In this study, a novel perovskite-based composite with positive sensitivity to temperature was designed and obtained based on its inverse temperature crystallization, demonstrating good flexibility and solution processability. The supercritical drying method was used to address the limitations of annealing drying in preparing high-performance perovskite. Optimizing the precursor composition proved to be an effective approach for achieving high fluorescence and structural integrity in the perovskite material. This perovskite-based composite exhibited a positive temperature sensitivity of2..563%℃-1for intensity change and excellent temperature cycling reversibility in the range of 2.–40℃in an ambient environment. This made it suitable for use as a smart window with rapid response. Furthermore, the perovskite composite was found to offer temperature-sensing photoluminescence and flexible processability due to its components of perovskite-based compounds and polyethylene oxide. The organic precursor solvent could be a promising candidate for use as ink to print or write on various substrates for optoelectronic devices responding to temperature.

关键词： flexibility inversed temperature crystallization perovskite positive temperature response

单位类型、工作环境与健康不平等——基于中国家庭追踪调查(CFPS2.2.)数据的分析

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社会发展研究 2024年第2期11卷 92-111,M0004,M0005页

作者：王甫勤同济大学政治与国际关系学院同济大学中国特色社会主义理论研究中心

以往研究关注到不同单位类型劳动者之间的健康不平等,但对这种健康不平等的形成机制缺乏解释。本研究采用“中国家庭追踪调查”(CFPS2.2.)数据,比较了不同类型单位劳动者间的健康水平差异,并以工作环境作为中介机制进行了研究。分析发现... 详细信息

以往研究关注到不同单位类型劳动者之间的健康不平等,但对这种健康不平等的形成机制缺乏解释。本研究采用“中国家庭追踪调查”(CFPS2.2.)数据,比较了不同类型单位劳动者间的健康水平差异,并以工作环境作为中介机制进行了研究。分析发现,公有制单位劳动者相比私营单位劳动者具有更低的抑郁水平,这种差异主要通过工作时间和社会支持得到解释。研究表明,劳动力市场的单位体制分割对人们生活机会的影响在不同领域仍持续存在。

关键词：单位类型工作环境抑郁水平健康不平等

自我效能感与健康不平等:一个综合的解释框架

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社会科学 2024年第2期 147-160页

作者：王甫勤同济大学政治与国际关系学院社会学研究所同济大学中国特色社会主义理论研究中心

以往关于健康不平等的解释存在多种非竞争性理论,不同解释机制之间缺乏整合。将健康不平等置于“结构”与“能动性”互动框架中,通过引入自我效能感概念,可以整合社会经济地位、自我效能感、健康行为与心理压力等因素,构造解释健康不平... 详细信息

以往关于健康不平等的解释存在多种非竞争性理论,不同解释机制之间缺乏整合。将健康不平等置于“结构”与“能动性”互动框架中,通过引入自我效能感概念,可以整合社会经济地位、自我效能感、健康行为与心理压力等因素,构造解释健康不平等的一个综合框架。采用“中国劳动力动态调查(CLDS2.14—2.18)”数据的分析发现:高社会经济地位劳动力人口的自评健康水平更高,其中介解释机制主要表现为高社会经济地位劳动力人口的自我效能感较强,这促进了他们在日常生活中更有规律地参与体育锻炼,更重要的是自我效能感缓解了他们在工作中的压力,最终提升了他们的自评健康水平。

关键词：健康不平等自我效能感健康行为工作压力

Optimizing the Bacillus thuringiensis(Bt)protein concentration in cotton:Coordinated application of exogenous amino acids and EDTA to reduce spatiotemporal variability in boll and leaf toxins

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Journal of Integrative Agriculture 2024年第10期23卷 3419-3436页

作者： Zhenyu Liu Shu Dong Yuting Liu Hanjia Li fuqin Zhou Junfeng Ding Zixu Zhao Yinglong Chen Xiang Zhang Yuan Chen Dehua Chen Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of GrainCrops Yangzhou UniversityYangzhou 225009China The UWA Institute of Agriculture School of Agriculture and EnvironmentThe University of Western AustraliaPerth 6009WAAustralia

During the boll formation stage,cotton bolls exhibit the lowest expression of Bacillus thuringiensis(Bt)insecticidal *** to insects varies notably among different organs,which poses challenges for controlling cotton ***,an experimental strategy was designed in the 2.2.-2.2. cotton growing season to coordinate the enhancement of protein synthesis and the attenuation of *** Bt cultivars of Gossypium hirsutum,namely the hybrid Sikang 3 and the conventional Sikang 1,were used as test *** treatments were applied at the peak flowering period:CK(the control),T1(amino acids),and T2.amino acids and EDTA).The results show that,in comparison to the CK group,the Bt protein contents were significantly increased in both cotton bolls and their subtending leaves under the T1 and T2.*** maximum levels of increase observed were 67.5%in cotton bolls and 2..7%in ***,the disparity in Bt protein content between cotton bolls and their subtending leaves notably decreased by 31.2..Correlation analysis suggested that the primary physiological mechanisms for augmenting Bt protein content involve increased protein synthesis and reduced protein catabolism,which are independent of Bt gene expression *** regression and path analysis revealed that elevating the soluble protein content and transaminase activity,while reducing the catabolic enzyme activities,are instrumental in enhancing the Bt protein ***,the coordinated application of amino acids and EDTA emerges as a strategy that can improve the overall resistance of Bt cotton and mitigate the spatiotemporal variations in Bt toxin concentrations in both cotton bolls and leaves.

关键词： Gossypium hirsutum Bt cotton insecticidal protein bolls and their subtending leaves nitrogen metabolism

基于炭/炭复合材料加工余料制备碳化硅粉末的组织及性能

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粉末冶金材料科学与工程 2024年第2期29卷 125-132页

作者：喻文瑞张福勤中南大学粉末冶金研究院长沙410083

以炭/炭复合材料加工余料为碳源,与硅粉充分混合,通过高温合成法制备单晶生长用碳化硅粉末,并对其显微组织和表面性能进行研究。结果表明:制备出的碳化硅粉末晶型为β-SiC,部分继承了炭/炭复合材料加工余料的管槽状、脊状结构。在拉曼... 详细信息

以炭/炭复合材料加工余料为碳源,与硅粉充分混合,通过高温合成法制备单晶生长用碳化硅粉末,并对其显微组织和表面性能进行研究。结果表明:制备出的碳化硅粉末晶型为β-SiC,部分继承了炭/炭复合材料加工余料的管槽状、脊状结构。在拉曼光谱中,该粉末的折叠横光与折叠纵光的半峰全宽之比为0.709,其相对纯度高于以石墨粉为碳源同工艺制备的碳化硅粉末。该碳化硅粉末具有多孔特征,比表面积为2..742. m^(2./g,可用于物理气相传输单晶生长工艺,且已初步验证其可行性。

关键词：高温合成法单晶生长碳化硅粉末物理气相传输炭/炭复合材料

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漫话纤维素

生物学教学 2024年第3期49卷 85-86页

作者：王龙李福琴安徽省阜阳市第三中学阜阳236000

通过对纤维素化学本质、功能、合成场所及合成过程等问题的辨析,形成对纤维素的新认识,有助于对生物学核心概念的深入理解。

关键词：纤维素生理功能能源物质合成

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中国传统元素在陶瓷雕塑中的应用研究

陶瓷 2024年第5期 67-69页

作者：罗福芹景德镇陶瓷大学江西景德镇333000

中国传统元素作为我国传统文化的重要组成部分,担当着继承和发展的重要使命。中国传统元素源自中国本土文明,具有深厚的文化底蕴和历史因缘,在绘画、书法、建筑和雕塑等艺术的发展过程中具有极大的影响力。陶瓷雕塑作为中国传统文化标... 详细信息

中国传统元素作为我国传统文化的重要组成部分,担当着继承和发展的重要使命。中国传统元素源自中国本土文明,具有深厚的文化底蕴和历史因缘,在绘画、书法、建筑和雕塑等艺术的发展过程中具有极大的影响力。陶瓷雕塑作为中国传统文化标志的之一,无论是从造型还是内涵上都极具代表性和象征性。陶瓷自一万多年前泥土硬烧定型慢慢发展到现代各种各样的成形方式,经历了极其漫长的历史过程,不断地融合大量的中国优秀传统元素,集结艺术、语言、文学于一体,承载着中华民族的历史记忆和民族符号。笔者从中国传统元素中的传统图案元素和传统造型元素两个方面来探究中国传统元素在陶瓷雕塑中应用。

关键词：中国传统元素陶瓷雕塑

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圆-椭圆垂直复合微孔织构对密炼机端面密封装置摩擦性能的影响

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橡胶工业 2024年第6期71卷 403-410页

作者：徐艳温梓琪杨福芹青岛科技大学机电工程学院山东青岛266061

建立密炼机端面密封装置圆-椭圆垂直复合微孔织构(简称复合织构)的流体动压润滑模型,研究织构参数和工况参数对复合织构摩擦性能的影响。结果表明:当复合织构深度为5μm时,复合织构端面密封装置具有最好的减摩性能;当复合织构面积率为43... 详细信息

建立密炼机端面密封装置圆-椭圆垂直复合微孔织构(简称复合织构)的流体动压润滑模型,研究织构参数和工况参数对复合织构摩擦性能的影响。结果表明:当复合织构深度为5μm时,复合织构端面密封装置具有最好的减摩性能;当复合织构面积率为43.96%时,润滑油膜平均无量纲压力(P_(a))最大和摩擦因数(μ)最小;复合织构的μ随着动密封环转速(n)和润滑油粘度(η)的增大而增大;密封间隙(h_(0))为3和6μm时,复合织构的P_(a)和μ都随着n和η的增大而增大;在不同的n和η下,复合织构的P_(a)和μ随着h_(0)的增大而减小。

关键词：复合微孔织构密炼机端面密封装置织构参数工况参数平均无量纲压力摩擦因数