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平面薄膜天线张拉系统优化设计及天线结构模态分析

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宇航学报 2017年第4期38卷 344-351页

作者：刘志全邱慧李潇林秋红中国空间技术研究院总体部北京100094

设计航天器平面薄膜天线双重索网张拉系统的构型,并以可伸展支撑杆承受轴力最小、薄膜阵面有效面积比最大、端杆长度最小为优化目标,对张拉系统进行多目标优化。优化后可伸展支撑杆所受轴力减小了15.51%,薄膜阵面有效面积比提高了1.25%... 详细信息

设计航天器平面薄膜天线双重索网张拉系统的构型,并以可伸展支撑杆承受轴力最小、薄膜阵面有效面积比最大、端杆长度最小为优化目标,对张拉系统进行多目标优化。优化后可伸展支撑杆所受轴力减小了15.51%,薄膜阵面有效面积比提高了1.25%,端杆长度减小了0.30%。利用ABAQUS软件对索膜结构、支撑框架以及天线整体的模态分别进行仿真分析,将天线结构等效模型基频的解析解与仿真结果进行比对,二者相互印证。最后通过仿真分析,得出薄膜内拉应力、可伸展支撑杆壁厚、可伸展支撑杆铺层角度和端杆壁厚对天线整体基频的影响规律。

关键词：平面薄膜天线双重索网张拉系统优化结构模态

Electrocatalytic cleavage of a lignin β-O-4 model compound and coupling with nitrogen-containing aromatics using Prussian blue analogue-derived nickel–cobalt spinel

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Journal of Energy Chemistry 2025年第1期100卷 628-636页

作者： Yi Qi Xueying Chen Bowen Liu Xuliang lin Xueqing qiu Yanlin Qin Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light Industry Guangdong University of Technology Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center Guangdong Basic Research Center of Excellence for Ecological Security and Green Development Guangdong University of Technology

Electrochemical conversion of lignin for the production of high-value heterocyclic aromatic compounds has great *** demonstrate the targeted synthesis and cation modulation of NiCo2O4spinel nanoboxes,synthesized via cation exchange and calcination *** catalysts exhibit excellent efficacy in the electrocatalytic conversion of lignin model compounds,specifically 2-phenoxy-1-phenylethanol,into nitrogen-containing aromatics,achieving high conversion rates and *** catalysts were synthesized via a cation exchange and calcination oxidation process,using Prussian blue nanocubes as *** porous architecture and polymetallic composition of the NiCo2O4spinel demonstrated superior performance in electrocatalytic oxidative coupling,achieving a 99.2 wt%conversion rate of the 2-phenoxy-1-phenylethanol with selectivities of 37.5 wt%for quinoline derivatives and 31.5 wt%for *** innovations include the development of a sustainable one-pot synthesis method for quinoline derivatives,the elucidation of a multistage reaction pathway involving CAO bond cleavage,hydroxyaldol condensation,and CAN bond formation,and a deeper mechanistic understanding derived from DFT *** work establishes a new strategy for lignin valorization,offering a sustainable route to produce high-value nitrogen-containing aromatics from renewable biomass under mild conditions,without the need for additional reagents.

关键词： Spinel Biomass valorization Electrocatalysis Lignin oxidation Coupling

Number rigid determinantal point processes induced by generalized Cantor sets

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Acta Mathematica Sinica,English Series 2025年

作者： Zhaofeng lin Yanqi qiu Kai WANG School of Fundamental Physics and Mathematical Sciences HIAS University of Chinese Academy of Sciences School of Mathematical Sciences Fudan University

We consider the Ghosh-Peres number rigidity of translation-invariant determinantal point processes on the real line R, whose correlation kernels are induced by the Fourier transform of the indicators of generalized Cantor sets in the unit interval. Our main results show that for any givenθ∈(0, 1), there exists a generalized Cantor set with Lebesgue measure θ, such that the corresponding determinantal point process is Ghosh-Peres number rigid.

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Human Urine Extract CDA-2 could Increase the Sensitivity to Decitabine in Decitabine Resistance Cell

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Human Urine Extract CDA-2 could Increase the Sensitivity to ...

第12届全国实验血液学会议

作者： Wang xiao-dan qiu lin Ma Jun Harbin Institute of Hematolgy & Oncology,Harbin 150010,China

＜正＞Objective:Decitabine（DAC）as a prototypical DNA methyltransferase（DNMT）inhibitor has been approved for the treatment of myelodysplastic syndromes（MDS）,but resistance to this agent is *** has been reported t...

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来源： cnki会议评论

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香蕉椰子牛奶饮品复原工艺和配方组成研究

饮料工业 2021年第6期24卷 43-48页

作者：林小秋厦门惠尔康食品有限公司厦门市健康谷物方便食品重点实验室福建厦门361000

本文研制一款以香蕉原浆、椰浆、脱脂奶粉和炼奶为主要原料,搭配白砂糖、稳定剂、水等的香蕉椰子牛奶营养饮品,采用单因素实验和响应面试验,以感官评分为判定标准,确定香蕉椰子牛奶饮品最优奶粉复原工艺和饮品的最优配方组成,实验结果显... 详细信息

本文研制一款以香蕉原浆、椰浆、脱脂奶粉和炼奶为主要原料,搭配白砂糖、稳定剂、水等的香蕉椰子牛奶营养饮品,采用单因素实验和响应面试验,以感官评分为判定标准,确定香蕉椰子牛奶饮品最优奶粉复原工艺和饮品的最优配方组成,实验结果显示:奶粉复原的最优工艺为:复原温度为55℃,复原时间40min,奶粉复原液均质压力为30MPa;香蕉椰子牛奶饮品的最优配方为:香蕉原浆2%,椰浆5%,脱脂奶粉4%,炼奶1%,白砂糖6.5%,复配稳定剂0.2%,小苏打0.03%,依照配方制备的香蕉椰子牛奶饮品,不仅同时具有香蕉和椰子的浓郁香气,还具有牛奶饱满的口感,营养丰富又细腻顺滑,无涩感。

关键词：奶粉复原香蕉原浆椰浆混合蛋白饮品配方

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社会工作专业教育在中国的发展

社会工作 2008年第2期 29-31页

作者：林小秋浙江大学教育学院浙江杭州310028

文章回顾了中国社会工作专业教育的发展历程,分析其发展的现状,总结目前社会工作专业教育的成效及存在问题,并对中国社会工作专业教育发展所面临的挑战与机遇展开探索。

关键词：社会工作专业教育发展机遇

Unlocking the stable interface in aqueous zinc-ion battery with multifunctional xylose-based electrolyte additives

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Journal of Energy Chemistry 2025年第1期100卷 770-778页

作者： xiaoqin Li Jian Xiang Lu qiu xiaohan Chen Yinkun Zhao Yujue Wang Qu Yue Taotao Gao Wenlong Liu Dan xiao Zhaoyu Jin Panpan Li Institute for Advanced Study Chengdu University School of Mechanical Engineering Chengdu University College of Food and Biological Engineering Chengdu University Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China College of Materials Science and Engineering Sichuan University

The growth of dendrites and the side reactions occurring at the Zn anode pose significant challenges to the commercialization of aqueous Zn-ion batteries（AZIBs）. These challenges arise from the inherent conflict between mass transfer and electrochemical kinetics. In this study, we propose the use of a multifunctional electrolyte additive based on the xylose（Xylo） molecule to address these issues by modulating the solvation structure and electrode/electrolyte interface, thereby stabilizing the Zn anode. The introduction of the additive alters the solvation structure, creating steric hindrance that impedes charge transfer and then reduces electrochemical kinetics. Furthermore, in-situ analyses demonstrate that the reconstructed electrode/electrolyte interface facilitates stable and rapid Zn2+ion migration and suppresses corrosion and hydrogen evolution reactions. As a result, symmetric cells incorporating the Xylo additive exhibit significantly enhanced reversibility during the Zn plating/stripping process, with an impressively long lifespan of up to 1986 h, compared to cells using pure ZnSO4electrolyte. When combined with a polyaniline cathode, the full cells demonstrate improved capacity and long-term cyclic stability. This work offers an effective direction for improving the stability of Zn anode via electrolyte design, as well as highperformance AZIBs.

关键词： Solvation

抗乙硫氨酸突变株产蛋氨酸发酵工艺条件的优化

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食品科学 2009年第3期30卷 243-248页

作者：林小秋冯琦张东环闵伟红吉林农业大学食品科学与工程学院吉林长春130118

本实验研究了抗乙硫氨酸突变株E31营养条件和培养条件的优化,结果表明:突变株E31发酵产蛋氨酸营养条件的最佳配方是葡萄糖11%、尿素0.8%、MgSO4.7H2O0.08%、生物素3μg/100ml,最佳培养条件组合是发酵培养基pH6、发酵温度33℃、接种量8%... 详细信息

本实验研究了抗乙硫氨酸突变株E31营养条件和培养条件的优化,结果表明:突变株E31发酵产蛋氨酸营养条件的最佳配方是葡萄糖11%、尿素0.8%、MgSO4.7H2O0.08%、生物素3μg/100ml,最佳培养条件组合是发酵培养基pH6、发酵温度33℃、接种量8%、发酵时间84h,在此条件下蛋氨酸产量为2.086g/L,比优化前蛋氨酸产量(1.479g/L)提高了0.607g/L。

关键词：蛋氨酸抗乙硫氨酸突变株发酵

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泸州神臂城宋代城防设施调查简报

西华师范大学学报（哲学社会科学版） 2017年第4期 1-7页

作者：蒋晓春林邱西华师范大学历史文化学院四川南充637009

泸州神臂城是宋蒙(元)战争期间南宋方面为抵抗蒙(元)军队而修建的城堡。神臂城现存和城防相关遗迹有城墙1700余米(含一字城2道),城门5座、砲台1座、敌台6座、墩台2座、哨所5处、校场坝1处等。从调查情况看,神臂城因地制宜,构建起了多层... 详细信息

泸州神臂城是宋蒙(元)战争期间南宋方面为抵抗蒙(元)军队而修建的城堡。神臂城现存和城防相关遗迹有城墙1700余米(含一字城2道),城门5座、砲台1座、敌台6座、墩台2座、哨所5处、校场坝1处等。从调查情况看,神臂城因地制宜,构建起了多层次立体防御体系。

关键词：神臂城遗址宋蒙(元)战争城防设施