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Drought-triggered repression of miR166 promotes drought tolerance in soybean

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The Crop Journal 2024年第1期12卷 154-163页

作者： Chen Zhao Jingjing Ma Chen Yan Yu Jiang Yaohua Zhang Yudan Lu Ye Zhang Suxin yang xianzhong Feng Jun Yan School of Life Sciences East China Normal UniversityShanghai 200241China Key Laboratory of Soybean Molecular Design Breeding Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102JilinChina

Drought stress limits agricultural productivity worldwide.Identifying and characterizing genetic components of drought stress-tolerance networks may improve crop resistance to drought stress.We show that the regulatory module formed by miR166 and its target gene,ATHB14-LIKE,functions in the regulation of drought tolerance in soybean(Glycine max).Drought stress represses the accumulation of miR166,leading to upregulation of its target genes.Optimal knockdown of miR166 in the stable transgenic line GmSTTM166 conferred drought tolerance without affecting yield.Expression of ABA signaling pathway genes was regulated by the miR166-mediated regulatory pathway,and ATHB14-LIKE directly activates some of these genes.There is a feedback regulation between ATHB14-LIKE and MIR166 genes,and ATHB14-LIKE inhibits MIR166 expression.These findings reveal that drought-triggered regulation of the miR166-mediated regulatory pathway increases plants drought resistance,providing new insights into drought stress regulatory network in soybean.

关键词： Soybean Drought stress miRNA ABA signaling

Effects of long-term blood pressure variability on renal function in community population

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Chronic Diseases and Translational Medicine 2024年第2期10卷 149-152页

作者： Zhao Feng Zhiquan Jing Zeya Li Gang Wang Shanshan Wu Dan Li Jing Hao Chunlei yang Jiashu Song xianzhong Gu Rongchong Huang Department of medical service Yongshun Community Health Service CenterYongshun TownBeijingChina Department of Cardiology Beijing Friendship HospitalCapital Medical UniversityBeijingChina Department of Cardiology Weihai Municipal HospitalWeihaiShandongChina National Clinical Research Center for Digestive Diseases Beijing Friendship HospitalCapital Medical UniversityBeijingChina

High blood pressure is a significant contributor to premature mortality,resulting in nearly 10 million deaths and over 200 million disabilities worldwide.1 In recent years,hypertension treatment has shifted focus not only to average blood pressure but also to blood pressure variability(BPV),categorized into very short-term,short-term,and long-term BPV based on the time period of occurrence.2,3 Long-term BPV has emerged as clinically significant,with studies demonstrating its superiority in predicting long-term cardiovascular events,stroke,and mortality compared to short-term variability.Given its association with pre-renal function decline,reducing blood pressure fluctuations is imperative.

关键词： mortality cardiovascular function

Carbon nanocages bridged with graphene enable fast kinetics for dual-carbon lithium-ion capacitors

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Green Energy & Environment 2024年第3期9卷 573-583页

作者： Shani Li Yanan Xu Wenhao Liu Xudong Zhang Yibo Ma Qifan Peng Xiong Zhang xianzhong Sun Kai Wang Yanwei Ma Institute of Electrical Engineering Chinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China Innovation Academy for Green Manufacture Beijing100190China Beijing Institute of Technology Beijing100081China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450001China

Lithium-ion capacitors(LICs) combining the advantages of lithium-ion batteries and supercapacitors are considered a promising nextgeneration energy storage device. However, the sluggish kinetics of battery-type anode cannot match the capacitor-type cathode, restricting the development of LICs. Herein, hierarchical carbon framework(HCF) anode material composed of 0D carbon nanocage bridged with 2D graphene network are developed via a template-confined synthesis process. The HCF with nanocage structure reduces the Li^(+) transport path and benefits the rapid Li^(+) migration, while 2D graphene network can promote the electron interconnecting of carbon nanocages. In addition, the doped N atoms in HCF facilitate to the adsorption of ions and enhance the pseudo contribution, thus accelerate the kinetics of the anode. The HCF anode delivers high specific capacity, remarkable rate capability. The LIC pouch-cell based on HCF anode and active HCF(a-HCF) cathode can provide a high energy density of 162 Wh kg^(-1) and a superior power density of 15.8 kW kg^(-1), as well as a long cycling life exceeding 15,000cycles. This study demonstrates that the well-defined design of hierarchical carbon framework by incorporating 0D carbon nanocages and 2D graphene network is an effective strategy to promote LIC anode kinetics and hence boost the LIC electrochemical performance.

关键词： Hierarchical carbon framework Nanocage ZIF Graphene Lithium-ion capacitors

In situ separator modification via CVD-derived N-doped carbon for highly reversible Zn metal anodes

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Nano Research 2022年第11期15卷 9785-9791页

作者： xianzhong yang Weiping Li Jiaze Lv Guojie Sun Zixiong Shi Yiwen Su Xueyu Lian Yanyan Shao Aomiao Zhi Xuezeng Tian Xuedong Bai Zhongfan Liu Jingyu Sun College of Energy Soochow Institute for Energy and Materials Innovations(SIEMIS)Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy TechnologiesSoochow UniversitySuzhou 215006China Beijing Graphene Institute(BGI) Beijing 100095China Institute of Physics Chinese Academy of SciencesBeijing 100190China Center for Nanochemistry(CNC) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Attention toward aqueous zinc-ion battery has soared recently due to its operation safety and environmental benignity.Nonetheless,dendrite formation and side reactions occurred at the anode side greatly hinder its practical application.Herein,we adopt direct plasma-enhanced chemical vapor deposition strategy to in situ grow N-doped carbon(NC)over commercial glass fiber separator targeting a highly stabilized Zn anode.The strong zincophilicity of such a new separator would reduce the nucleation overpotential of Zn and enhance the Zn-ion transference number,thereby alleviating side reactions.Symmetric cells equipped with NC-modified separator harvest a stable cycling for more than 1,100 h under 1 mA·cm^(−2)/1 mAh·cm^(−2).With the assistance of NC,the depth of discharge of Zn anode reaches as high as 42.7%.When assembled into full cells,the zinc-ion battery based on NC-modified separator could maintain 79%of its initial capacity(251 mAh·g^(−1))at 5 A·g^(−1) after 1,000 cycles.

关键词： N-doped carbon glass fiber separator modification plasma-enhanced chemical vapor deposition(PECVD) Zn metal anode

电商示范县空间分布特征及其对创业活力的影响

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地理研究 2024年第1期43卷 105-120页

作者：郭艺曾刚杨阳曹贤忠王胜鹏华东师范大学中国现代城市研究中心上海200062 华东师范大学地理科学学院上海200241 河南大学地理与环境学院开封475004

在新发展阶段,激发地区内生发展动力,增强创业活力是巩固脱贫攻坚成果和乡村振兴的关键所在。本文基于2014—2020年中国电商示范县试点和新创企业数据,采用标准差椭圆、核密度分析和马尔科夫链等方法,刻画电商示范县试点和当地创业活力... 详细信息

在新发展阶段,激发地区内生发展动力,增强创业活力是巩固脱贫攻坚成果和乡村振兴的关键所在。本文基于2014—2020年中国电商示范县试点和新创企业数据,采用标准差椭圆、核密度分析和马尔科夫链等方法,刻画电商示范县试点和当地创业活力的时空演变特征。在此基础上,以云南省为例,采用多期双重差分模型实证检验电商示范县试点对当地创业活力的影响及其内在机制。结果表明:①电商示范县试点分布范围不断扩大,时空演化呈现由散点式分布向连片集聚式分布转变,西北和西南地区逐渐成为政策覆盖的重点;在研究期间内试点地区的创业活力呈上升趋势,马太效应明显。②电商示范县试点降低了地理因素和人口规模对创业活力的限制,显著促进了当地创业活力的提升,其中对农业和金融业的促进作用更明显。③试点政策主要通过提高传统和数字金融发展水平、推动农业现代化和加快基础设施建设等途径提升了当地创业活力。④进一步从共同富裕视角来看,电商示范县试点有利于提高农民收入,缩小县域城乡收入差距。以上结论为新时代乡村振兴战略决策提供了理论参考,也为如何激发地区创业活力提供了来自电商示范项目的可行路径。

关键词：电商示范县创业活力乡村振兴空间分布机制分析

我国物权立法贯彻科学性原则的问题研究--兼顾一段立法历史的回忆

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政法论坛 2024年第1期42卷 3-34页

作者：孙宪忠中国社会科学院法学所

2007年《物权法》是贯彻科学立法原则的重要努力,物权编作为《民法典》第二编是贯彻科学立法原则的结果。法律关系学说作为民法立法、民法分析和裁判的基本逻辑,是全部民事法律制度建立、执法以及司法机关使用法律的逻辑。对物权的定义... 详细信息

2007年《物权法》是贯彻科学立法原则的重要努力,物权编作为《民法典》第二编是贯彻科学立法原则的结果。法律关系学说作为民法立法、民法分析和裁判的基本逻辑,是全部民事法律制度建立、执法以及司法机关使用法律的逻辑。对物权的定义,笔者提出“三个特定”学说,即物权法律关系中包括特定的人、特定的物、特定的权利这些基本因素。物权法属于民事立法中的财产权利立法、实体性权利立法,其体系和内容非常庞大。物权法范畴应包括确立财产支配秩序的制度范畴、物权变动的制度范畴、第三人保护的制度范畴。物权立法依据法理科学对中国特有的公有制财产权利制度进行更新改造,包括对国家所有权制度的更新改造、以成员权为基础重塑农村集体经济组织所有权制度,以及《民法典》对其他公有制财产权利简要规定。我国物权立法积极吸收前人创造的科学理论,并且将这些理论结合我国独特的政治制度、经济制度和法律文化背景,结合我国国情,重塑物权立法结构,创立区分原则,重塑公示原则,重建交易安全保障制度。这些重大制度的改造、创新或者重塑,现在已经成为广泛的社会共识,在法律实施的过程中得到了广泛的应用。

关键词：物权立法科学立法物权法民法典

Non-symmetric hybrids of noble metal-semiconductor:Interplay of nanoparticles and nanostructures in formation dynamics and plasmonic applications

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Progress in Natural Science:Materials International 2017年第2期27卷 157-168页

作者： Yinghui Sun xianzhong yang Haofei Zhao Rongming Wang Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and PhysicsUniversity of Science and Technology Beijing Beijing National Laboratory for Condensed Matter Physics Beijing Key Laboratory for Nanomaterials and NanodevicesInstitute of PhysicsChinese Academy of Sciences

Noble metal-semiconductor hybrids have been employed as fundamental structures in modern technologies. In these hybrids, their cooperative multiple functions attract much attention in recent years because of the interplay of nanoparticles and nanostructures. In this review, we summarize the interplay of nanoparticles and nanostructures in specific kinds of noble metal-semiconductor hybrids, termed as non-symmetric hybrids of noble metal-semiconductor. It particularly refers to metal nanoparticles(or semiconducting quantum dots) at 1-dimensinal(1D) and 2-dimensional(2D) semiconductor(or metal) nanostructures, in contrast to the core/shell and heterodimer nanostructures. First, we discuss the formation dynamics, especially in chemical growth and assembly as well as physical coating and deposition, of non-symmetric noble metal-semiconductor hybrids with nanoparticles on nanostructures. Second, we introduce the plasmon-related applications of these hybrids in heterogeneous catalysis, optoelectronic or photovoltaic devices, all-optical devices, and surface detection or modulation. This review not only provides a comprehensive understanding of the formation mechanisms of the non-symmetric metal-semiconductor hybrid nanostructures, but also may inspire new ideas of novel functional devices and applications based on these systems.

关键词： Noble metal Semiconductor Nanoparticle Nanostructure Hybrid

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基于浮选泡沫图像预测精矿品位的研究进展

金属矿山 2024年第2期 25-38页

作者：卜显忠杨怡琳宛鹤西安建筑科技大学资源工程学院陕西西安710055

随着人工智能技术在矿业生产的广泛应用,利用计算机视觉技术提高精矿品位预测的准确性和效率已成为必然趋势。在综述了传统图像处理算法和深度学习算法在精矿品位预测中的应用与发展历程基础上,并探讨了未来的发展趋势和挑战。传统图像... 详细信息

随着人工智能技术在矿业生产的广泛应用,利用计算机视觉技术提高精矿品位预测的准确性和效率已成为必然趋势。在综述了传统图像处理算法和深度学习算法在精矿品位预测中的应用与发展历程基础上,并探讨了未来的发展趋势和挑战。传统图像处理技术通过提取泡沫图像的尺寸、颜色、纹理和流速等特征,结合分水岭分割、颜色矩、灰度共生矩阵和局部点特征匹配等算法进行特征提取。这些特征在计算资源有限的场景中具有一定的应用价值,但在应对精矿品位预测任务时精度较低。深度学习技术通过构建合适的模型架构并利用大量数据进行训练,能够提取高层语义特征,具有较高的预测精度,与图形处理单元(GPU)等高效运算设备配合使用,可实现高性能和高效率的统一。介绍了支持向量机(SVM)、极限学习机(ELM)等机器学习算法以及多层感知器(MLP)、全连接层和多尺度特征融合等深度学习算法在特征映射和品位预测中的应用,以及深度学习模型的发展历程。最后综述了工业界视觉检测系统的应用现状,并从数据驱动模型、多模态数据融合、算法实时性和数据集规模等方面分析了该领域所面临的挑战和未来发展趋势。

关键词：精矿品位预测浮选泡沫图像处理计算机视觉深度学习

自适应聚类的图像块分级DCT混合数模无线传输方法

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通信学报 2024年第1期45卷 152-166页

作者：唐述杨鹏谢显中周广义李佳庆赵瑜重庆邮电大学计算机科学与技术学院重庆400065

提出了一种新颖的混合数模无线传输方法来实现高质量的图像传输。首先,从原始图像中减去先下采样后上采样的图像来得到残差层图像。其次,提出了一种自适应聚类的块分级离散余弦变换算法来有效去除残差层图像像素之间的相关性。最后,提... 详细信息

提出了一种新颖的混合数模无线传输方法来实现高质量的图像传输。首先,从原始图像中减去先下采样后上采样的图像来得到残差层图像。其次,提出了一种自适应聚类的块分级离散余弦变换算法来有效去除残差层图像像素之间的相关性。最后,提出了一种基于图像块等级的不等功率分配策略来进一步提升接收端的图像质量。大量的实验结果表明,所提方法在定性评估和定量度量两方面都明显优于现有较成功的混合数模图像无线传输方法。

关键词：混合数模传输图像无线传输伪模拟传输方法离散余弦变换不等功率分配