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基于多市场空间古诺模型的电能与绿色证书交易市场均衡分析

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吉林电力 2024年第2期52卷 30-34页

作者：邵佳琦赵辉周茉东北电力大学吉林吉林132012 国网东北分部太平湾发电厂辽宁丹东118000 华电吉林能源有限公司长春130021

针对可再生能源配额制及其配套的绿色证书交易制度的实施,研究可再生能源发电商和火电发电商在电力批发市场和绿色证书市场下的中长期电能交易市场均衡问题。首先,在电力批发市场和绿色证书市场下,构造两类发电商的空间古诺模型,对多市... 详细信息

针对可再生能源配额制及其配套的绿色证书交易制度的实施,研究可再生能源发电商和火电发电商在电力批发市场和绿色证书市场下的中长期电能交易市场均衡问题。首先,在电力批发市场和绿色证书市场下,构造两类发电商的空间古诺模型,对多市场下两类发电商的目标函数集中优化,利用yalmip求解。最后,分析得到可再生能源配额的变化对电能价格、交易电量等存在的影响,对政府科学设置配额比例提供了参考意见。

关键词：可再生能源配额制绿色证书中长期电能交易空间古诺模型

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纳米氧化铜片用于高效电化学还原一氧化氮

Science China Materials 2024年第6期67卷 1876-1881页

作者：邵加奇魏鹏飞王硕宋延鹏付云凡李荣坦张小敏汪国雄包信和 State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049China

一氧化氮电还原反应将工业废气转化为有价值的氨,表现出极具潜力的应用前景.在本工作中,我们合成了具有高比表面积和丰富缺陷的氧化铜纳米片催化剂,在流动池中氨法拉第效率达到92.1%,在-0.2 V ***时,一氧化氮电还原电流密度和氨的生产... 详细信息

一氧化氮电还原反应将工业废气转化为有价值的氨,表现出极具潜力的应用前景.在本工作中,我们合成了具有高比表面积和丰富缺陷的氧化铜纳米片催化剂,在流动池中氨法拉第效率达到92.1%,在-0.2 V ***时,一氧化氮电还原电流密度和氨的生产速率分别达到1.1 A cm^(-2)和7356μmol cm^(-2)h^(-1).在电流密度超过400 m A cm-2时,氨法拉第效率在50小时保持在80%以上.准原位X射线光电子能谱和原位X射线吸收光谱结果表明氧化铜纳米片在一氧化氮电还原过程中被电化学还原成单质铜.与铜纳米颗粒相比,氧化铜纳米片展现出较高的电化学表面积和一氧化氮电还原的内在活性.

关键词： electrocatalytic NORR ammonia synthesis electro-catalysis CuO nanosheets

Amorphous Sn(HPO_(4))_(2)-derived phosphorus-modified Sn/SnO_(x) core/shell catalyst for efficient CO_(2) electroreduction to formate

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Journal of Energy Chemistry 2023年第6期81卷 125-131,I0005页

作者： Chunfeng Cheng Tianfu Liu Yi Wang Pengfei Wei jiaqi Sang jiaqi shao Yanpeng Song Yipeng Zang Dunfeng Gao Guoxiong Wang State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China

Simultaneously achieving high activity,selectivity and stability for electrochemical CO_(2)reduction reaction(CO_(2)RR)remains great ***,a phosphorus-modified Sn/Sn Oxcore/shell(P-Sn/SnO_x)catalyst,derived from in situ electrochemical reduction of an amorphous Sn(HPO_(4))_(2) pre-catalyst,exhibits high CO_(2)RR *** total Faradaic efficiency(FE)of C_(1) products is close to 100%in a broad potential range from-0.49 to-1.02 V *** hydrogen electrode,and a total current density of 315.0 m A cm^(-2)is ***,the P-Sn/SnO_(x) catalyst maintains a formate FE of~90%for 120 *** functional theory calculations suggest that the phosphorus-modified Sn/SnO_(x) core/shell structure effectively facilitates formate production by enhancing CO_(2)adsorption and improving free energy profile of formate formation.

关键词： CO_(2)electroreduction Structural evolution Reaction intermediate Phosphorus modification Stability

Application of U-Net and Optimized Clustering in Medical Image Segmentation:A Review

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Computer Modeling in Engineering & Sciences 2023年第9期136卷 2173-2219页

作者： jiaqi shao Shuwen Chen Jin Zhou Huisheng Zhu Ziyi Wang Mackenzie Brown School of Physics and Information Engineering Jiangsu Second Normal UniversityNanjing211200China State Key Laboratory of Millimeter Waves Southeast UniversityNanjing210096China Jiangsu Province Engineering Research Center of Basic Education Big Data Application Nanjing211200China School of Data Science Perdana UniversitySerdangSelangor43400Malaysia

As a mainstream research direction in the field of image segmentation,medical image segmentation plays a key role in the quantification of lesions,three-dimensional reconstruction,region of interest extraction and so *** with natural images,medical images have a variety of ***,the emphasis of information which is conveyed by images of different modes is quite *** it is time-consuming and inefficient to manually segment medical images only by professional and experienced ***,large quantities of automated medical image segmentation methods have been ***,until now,researchers have not developed a universal method for all types of medical image *** paper reviews the literature on segmentation techniques that have produced major breakthroughs in recent *** the large quantities of medical image segmentation methods,this paper mainly discusses two categories of medical image segmentation *** is the improved strategies based on traditional clustering *** other is the research progress of the improved image segmentation network structure model based on *** power of technology proves that the performance of the deep learning-based method is significantly better than that of the traditional *** paper discussed both advantages and disadvantages of different algorithms and detailed how these methods can be used for the segmentation of lesions or other organs and tissues,as well as possible technical trends for future work.

关键词： Medical image segmentation clustering algorithm U-Net

职业化培训助力公立医院高素质干部队伍建设的探索

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现代医院 2024年第4期24卷 561-563页

作者：吕超郭颖凌纪颖邵佳祺高虹复旦大学附属中山医院党委组织部上海200032

2018年6月,中共中央办公厅印发的《关于加强公立医院党的建设工作的意见》中指出要加强公立医院领导班子、干部队伍和人才队伍建设,推进职业化建设。本文通过文献研究结合经验总结,对当前我国公立医院管理干部职业化培训现状、存在的问... 详细信息

2018年6月,中共中央办公厅印发的《关于加强公立医院党的建设工作的意见》中指出要加强公立医院领导班子、干部队伍和人才队伍建设,推进职业化建设。本文通过文献研究结合经验总结,对当前我国公立医院管理干部职业化培训现状、存在的问题等方面进行评价,发现亟待改善的薄弱环节,探索高效的干部职业化培训体系,以期为我国公立医院干部队伍建设提供参考。

关键词：公立医院职业化培训干部队伍

双蛋白天然共生颗粒Pickering纳米乳液的稳定性分析

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食品工业科技 2024年第21期45卷 74-84页

作者：邵家起邓乾春李康昱肖军霞向霞郑畅彭登峰青岛农业大学食品科学与工程学院山东青岛266109 中国农业科学院油料作物研究所农业农村部油料加工重点实验室油料脂质化学与营养湖北省重点实验室湖北武汉430062

利用双蛋白天然共生颗粒制备Pickering纳米乳液并对其物化稳定性进行分析,以此拓宽其在食品领域中的应用潜力。本研究采用碱提取-等电点沉淀法(Alkali extraction-isoelectric point precipitation,AE)和盐提取-透析法(Salt extraction-... 详细信息

利用双蛋白天然共生颗粒制备Pickering纳米乳液并对其物化稳定性进行分析,以此拓宽其在食品领域中的应用潜力。本研究采用碱提取-等电点沉淀法(Alkali extraction-isoelectric point precipitation,AE)和盐提取-透析法(Salt extraction-dialysis,SE)从大豆-亚麻籽混合粕中富集大豆蛋白(Soy protein)和亚麻籽蛋白(Flaxseed protein),制备双蛋白天然共生颗粒(Natural particles,SFNPs)。首先,利用外观观察、原子力显微镜(Atomic force microscopy,AFM)、圆二色谱和拉曼光谱对两种双蛋白共生颗粒进行表征;其次,将其作为颗粒稳定剂制备Pickering纳米乳液,并对其物理和化学稳定性进行表征。结果表明AE-SFNPs的尺度更为均一,且具有良好的分散性。与SE-SFNPs相比,AE-SFNPs的二级结构中β-折叠占比更高,达51.25%,具有更加致密有序和良好柔性的结构特性。2种双蛋白天然共生颗粒均可制备出Pickering纳米乳液。在28 d的贮藏期间,AE-SFNPs稳定乳液的粒径仅增加了约14 nm,电位基本稳定在-34 mV左右,而SE-SFNPs稳定乳液的粒径增加了约12倍,电位降低了1.32倍。贮藏至第28 d时,AE-SFNPs的稳定性指数(Turbiscan stability index,TSI,5.83),远小于SESFNPs的TSI值(55.13)。尤其是,AE-SFNPs制备的Pickering纳米乳液表现出了比酪蛋白酸钠(食品领域加工常用乳化剂)制备的纳米乳液更佳的物理稳定性和化学稳定性。因此,AE-SFNPs可作为一种天然高效植物蛋白基颗粒稳定剂制备Pickering纳米乳液,为丰富纳米乳液的工业化应用提供了新的解决策略。

关键词：植物基双蛋白共生提取天然颗粒界面重构 Pickering纳米乳液

Eat at the right time: Regulation of ER-phagy receptors in plant response to environmental stresses

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Molecular Plant 2024年第2期17卷 236-239页

作者： Yang shao jiaqi Sun Huanquan Zheng The Key Laboratory of Plant Development and Environmental Adaptation Biology Ministry of EducationSchool of Life SciencesShandong UniversityQingdao 266237China Department of Biology McGill UniversityMontrealQC H3A 1B1Canada

The endoplasmic reticulum(ER)is a cellular factory for biosynthesis of proteins and *** accommodate a wide array of biosynthetic demands in responses to environmental stresses,the plant ER remodels to maintain a structural and functional homeostasis.A key process facilitating this balance is selective autophagy of the ER(ER-phagy),where malfunctioned ER is recognized,engulfed by autophagosomes,and then delivered to the vacuole for degradation.

关键词： maintain accommodate function

中缅边境景颇族“目瑙纵歌”国际传播的民间交往实践与策略研究

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新闻传播科学 2024年第3期12卷 724-734页

作者：洪一丹张凤娇邵佳琦杨晨曦云南大学新闻学院云南昆明

基于历史文脉,跨境民族能通过文化交流参与国际传播能力建设。“目瑙纵歌”是中缅边境景颇族共有的传统节庆,在跨境民族传播实践中颇具典型。本研究以此切入,选择云南陇川县为例,以参与观察、深度访谈了解其中开展的传播和交流的情况。... 详细信息

基于历史文脉,跨境民族能通过文化交流参与国际传播能力建设。“目瑙纵歌”是中缅边境景颇族共有的传统节庆,在跨境民族传播实践中颇具典型。本研究以此切入,选择云南陇川县为例,以参与观察、深度访谈了解其中开展的传播和交流的情况。研究发现:中缅景颇族分别进行文化适应,“目瑙纵歌”具有异质特征:我国之整合为经贸娱乐的民族节庆;缅甸之与现代宗教相整合,仍为信仰,而二者皆怀祖祈福的同质特征,构成了传播互动的基础。作为国际传播媒介,我国“目瑙纵歌”由多元主体协同作用,而结合互动仪式链理论视角,可知中缅参与者以身体聚集为互动前提;以设置屏障和共同焦点为传播手段;以情感共享实现信息传递,达成塑造国家形象、强化沟通意愿等效果。文末探讨其困境启示,能为类似实践提供一定经验。

关键词：国际传播民间传播跨境民族目瑙纵歌

Copper-indium bimetallic catalysts for the selective electrochemical reduction of carbon dioxide

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Chinese Journal of Catalysis 2020年第9期41卷 1393-1400页

作者： jiaqi shao Yi Wang Dunfeng Gao Ke Ye Qi Wang Guoxiong Wang Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001HeilongjiangChina State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Liaoning Key Materials Laboratory for Railway School of Materials and EngineeringDalian Jiaotong UniversityDalian 116028LiaoningChina

Copper-indium bimetallic catalysts with a dendritic structure are fabricated by a two-step electrodeposition method using a hydrogen evolution template for the CO2 electroreduction reaction(CO2RR).The dendritic Cu-In-30 catalyst electrodeposited for 30 min shows the highest specific surface area and exposes the most active sites,resulting in improved CO2RR *** dendritic Cu-In-30 catalyst exhibits distinctly higher formate partial current density(42.0 m A cm^-2)and Faradaic efficiency(87.4%)than those of the In-30 catalyst without the dendritic structure(the formate partial current density and Faradaic efficiency are 4.6 m A cm^-2 and 57.0%,respectively)at-0.85 V *** hydrogen electrode,ascribed to the increased specific surface *** Cu-In-30 catalyst can maintain stable performance for 12 h during the *** addition,the intrinsic current density of Cu-In-30 with the dendritic structure(4.8 m A cm^-2)is much higher than that of In-30 without the dendritic structure(2.1 m A cm^-2),indicating that the dendritic structure promotes the CO2RR,possibly due to additional coordination unsaturated atoms.

关键词： CO2 electroreduction reaction Copper Indium Electrodeposition Formate