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文化数字化背景下融合出版用户体验场景建设模式研究--以科学家主题出版资源为例

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出版发行研究 2024年第3期 44-51页

作者：杨琳李燕姿袁天豫刘阁中国科学院文献情报中心中国科学院大学经济与管理学院工业和信息化部机关服务中心

文化数字化背景下,优化出版传播场景,提升用户服务体验已经成为发展融合出版的关键着力点。融合出版用户体验场景建设包括现实用户体验场景(公共文化场所、一般公共场所空间)、虚拟用户体验场景(广播电视和网络视听、人工智能生成内容AI... 详细信息

文化数字化背景下,优化出版传播场景,提升用户服务体验已经成为发展融合出版的关键着力点。融合出版用户体验场景建设包括现实用户体验场景(公共文化场所、一般公共场所空间)、虚拟用户体验场景(广播电视和网络视听、人工智能生成内容AIGC)、虚拟现实用户体验场景(虚拟现实阅读、虚拟现实展览、元宇宙出版、元宇宙课堂、元宇宙展览、元宇宙演出等元宇宙应用)三种建设模式,应解决好三个方面的重点问题:提升出版资源标识工作,有效支撑文化大数据解析体系建设;完善数字智能技术集成应用,提升用户体验场景呈现及普惠性;拓展建设主体跨界共同体,深化互惠衍生价值等。

关键词：用户体验场景融合出版文化数字化

农户数字信息选择对绿色生产风险影响及机制研究——基于小麦种植户调研数据分析

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中国农机化学报 2024年第4期45卷 275-283,310页

作者：李嫣资熊晓轶胥佳慧刘富强张新仕陶佩君河北金融学院河北保定071051 保定市农业科学院河北保定071033 河北省农林科学院石家庄市050051 河北农业大学河北保定071033

农户绿色生产风险的规避与防范是粮食产业绿色高质量发展的重要保障。基于河北与河南省912份小麦种植户微观调研数据,运用内生转换Probit模型和反事实分析法,探讨农户数字信息选择对绿色生产风险的影响效应及作用机制。结果表明:43.42%... 详细信息

农户绿色生产风险的规避与防范是粮食产业绿色高质量发展的重要保障。基于河北与河南省912份小麦种植户微观调研数据,运用内生转换Probit模型和反事实分析法,探讨农户数字信息选择对绿色生产风险的影响效应及作用机制。结果表明:43.42%的小麦种植户面临较高的绿色生产风险;数字信息选择能显著降低小麦种植户绿色生产风险,选择数字信息的农户若未选择数字信息,其高绿色生产风险的概率会增加22.48%;数字信息的选择通过信息获取、生产监测、市场分析三个中介路径显著降低农户绿色生产风险。因此,政府应夯实网络基础设施建设,强化数字信息供给的精准性;提高种粮大户的政策性补贴力度,促进小麦种植户规模化产业化经营。

关键词：数字信息绿色生产风险小麦种植户内生转换Probit模型

Designing macrophage membrane-engineered ruthenium/selenium nanoparticles to block bone metastasis of breast cancer

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Nano Research 2024年第8期17卷 7504-7512页

作者： Meijin Yang Zhiying Tang Xiaoying li yanzi Yu lizhen He Tianfeng Chen College of Chemistry and Materials Science Department of Oncology of The First Affiliated HospitalJinan UniversityGuangzhou 510632China

Bone metastasis along with osteolysis is a common complication of advanced breast cancer,which directly destroys bone function and becomes one of the major causes of cancer-related *** is crucial to develop a new strategy to achieve effective cancer therapy and inhibition of osteolytic bone *** ruthenium(Ru)complexes exhibit therapeutic potential in cancer ***,the clinical applications of Ru complexes were limited by poor bioavailability,lacking targeting,nonspecific ***,in this study,engineering of cell membrane biomimetic modification was used to construct a highly biocompatible nanoplatform with carrying Ru metal complex of RuPOP and Se nanoparticles(SeNPs).Strikingly,the obtained RPSR nanoparticles can efficiently inhibit the proliferation,invasion and migration of breast cancer cells(MDA-MB-231 cells)in *** importantly,RPSR nanoparticles can induce cycle arrest,apoptosis by generating excessive intracellular(reactive oxygen species,ROS)to disrupt the normal redox balance and induce DNA damage in tumor ***,RPSR nanoparticles can also reshape bone microenvironment by regulating selenoproteins to inhibit osteoclasts and avoid osteolytic bone metastasis induced by tumor *** together,this study not only provides an effective cell membrane biomimetic strategy to enhance the shortcomings of metal complexes,but also demonstrates potential clinical significance for the combined treatment of anti-cancer and bone metastasis inhibition.

关键词： cell membrane nanoparticles biomimetic modification ruthenium complexes selenium nanoparticles tumor bone metastasis

Preparation of Molecularly Imprinted Sericin/ Poly（vinyl alcohol） Electrospun Fibers for Selective Removal of Methylene Blue

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Chemical Research in Chinese Universities 2017年第6期33卷 986-994页

作者： ZHAO Rui li Xiang SUN Bolun li Yumei li yanzi WANG Ce Alan G. MacDiarmid lnstitute College of Chemistry Jilin University Changchun 130012 P. R. China

Sericin（SS）, as an abtmdant and renewable resource in nature, has been proven to be a good adsorbent for metal ions or organic dyes removal. In this study, glutaraldehyde vapor cross-linked sericin-based electrospun fiber adsorbent was developed for the removal of methylene blue（MB） from wastewater. To overcome the problem of decreasing adsorption capacity by excessive functional group cross-linking, MB-imprinted sericin/poly（vinyl alcohol）（PVA） electrospun fiber adsorbent was prepared. Biocompatible PVA was added to the electrospinning solution to improve the spinnability and mechanical property. Scanning electron microscopy（SEM）, Fourier transforms infrared spectroscopy（FTlR）, and so forth were used to confirm their structures and composition. The adsorption performance toward the template molecule MB, including pH effect, adsorption isotherm, adsorption kinetics, adsorption selectivity, and reusability, was investigated. By comparison with non-imprinted sericin/PVA electrospun fibers, MB-imprinted sericin/PVA electrospun fiber adsorbent showed an enhanced and selective adsorption capacity toward MB with a good regeneration and recycling ability. The adsorption test suggests that the resulting MB-imprinted sericin/PVA electrospun fibers are promising adsorbents for MB removal from aqueous system.

关键词： Sericin Molecular imprinting Electrosptun fiber Adsorbent Methylene blue

A Novel Hollow Carbon@MnO_(2) Electrospun Nanofiber Adsorbent for Efficient Removal of Pb^(2+) in Wastewater

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Chemical Research in Chinese Universities 2021年第3期37卷 496-504页

作者： li Wenyan li yanzi liU Jiadi CHAO Shen YANG Tianyi li lijuan WANG Ce li Xiang Alan G.MacDiarmid Institute Jilin UniversityChangchun130012China Teaching Experimental Center Hebei Normal University for NationalitiesChengde067000China College of Plant Science Jilin UniversityChangchun130062China Department of Chemistry and Biochemistry California State UniversityLong Beach1250 Bellflower Blvd.Long BeachCA90840USA

Lead ion(Pb^(2+))is one of the most hazardous heavy metal ions in aquatic *** materials and manganese dioxide(MnO_(2))have been shown to be prospective adsorbents to cope with the lead *** this study,a novel hollow carbon@MnO_(2) composite nanofiber adsorbent was prepared by the combination of electrospinning and *** PAN nanofiber membrane is subjected to a pre-oxidation and carbonization process,and then the obtained carbon nanofibers react with KMnO4 solution during the hydrothermal process to develop the hollow carbon@MnO_(2) *** hollow carbon@MnO_(2) nanofibers displayed a higher adsorption capacity of Pb^(2+)than carbon and MnO_(2)/PDA/PAN *** maximum adsorption capacity toward Pb^(2+)by hollow carbon@MnO_(2) nanofibers was 460.83 mg/*** 5 adsorption-desorption cycles,the carbon@MnO_(2) nanofibers had a good recyclability and the removal efficiency remained 81.47%.Moreover,the removal efficiency of the hollow composite nanofibers for Pb^(2+)from real wastewater could reach 94.37%.This work shows a strategy for synthetics of the hollow carbon@MnO_(2) nanofibers,which exhibits a promising potential in actual wastewater treatment.

关键词： Carbon@MnO_(2)composite Hollow nanofiber Electrospinning Lead adsorption

Preparation of MnO2 Loaded Hydrothermal Carbon-coated Electrospun PAN Fiber Membranes for Highly Efficient Adsorption and Separation of Cationic Dye

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Chemical Research in Chinese Universities 2020年第6期36卷 1292-1301页

作者： WANG Yuannan li Wenyan CHAO Shen li yanzi li Xiang HE Dayong WANG Ce Alan G.MacDiarmid Institute College of ChemistryJilin UniversityChangchun 130012P.R.China Teaching Experimental Center Hebei Normal University for NationalitiesChengde 067000P.R.China

Hydrothermal carbonaceous materials and MnO2 have been proved to be promising adsorbents to remove organic dyes from *** this study,flexible MnO2 loaded hydrothermal carbon-coated electrospun poly-acrylonitrile(AC/MnO/PAN)fiber membranes were fabricated by a facile one-step hydrothermal method and activated by NaOH *** composite fibers exhibited large adsorption capacity toward cationic dyes and ex-cellent mechanical *** adsorption performance can be ftted well with pseudo-second order model and Langmuir isotherm *** maximum adsorption for methylene blue(MB),methyI violet(MV)and malachite green(MG)are 1173.27,1106.31 and 1129.89 mg/g,respectively,according to Langmuir *** AC/MnO/PAN fiber membrane also showed satisfactory performances for selective adsorption and *** addition,based on selective adsorption,the AC/MnOz/PAN fiber membranes that are repulsive to the anionic dye methyl orange(MO)can separate the MB/MO mixture solution by dynamic ***,this work not only provides a facile strategy to fabricate large capacity adsorbents,but also dermonstrates the potential appications in the dye wastewater treatment field.

关键词： Carbon MnO One-step hydrothermal Electrospinning Adsorption Cationic dye

Leaching kinetics of fluorine during the aluminum removal from spent li-ion battery cathode materials

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Journal of Environmental Sciences 2024年第4期138卷 312-325页

作者： Shengjie li Jianxin Zhu Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

The high content of aluminum(Al)impurity in the recycled cathode powder seriously affects the extraction efficiency of Nickel,Cobalt,Manganese,and lithium resources and the actual commercial value of recycled materials,so Al removal is crucially important to conform to the industrial standard of spent li-ion battery cathode *** this work,we systematically investigated the leaching process and optimum conditions associated with Al removal from the cathode powder materials collected in a wet cathode-powder peeling and recycling production line of spent li-ion batteries(liBs).Moreover,we specifically studied the leaching of fluorine(F)synergistically happened along with the removal process of Al,which was not concerned about in other studies,but one of the key factors affecting pollution prevention in the recovery *** mechanism of the whole process including the leaching of Al and F from the cathode powder was indicated by using NMR,FTIR,and XPS,and a defluoridation process was preliminarily investigated in this *** leaching kinetics of Al could be successfully described by the shrinking core model,controlled by the diffusion process and the activation energy was 11.14 kJ/***,the leaching of F was attributed to the dissolution of liPF6and decomposition of PVDF,and the kinetics associated was described by Avrami *** interaction of Al and F is advantageous to realize the defluoridation to some *** is expected that our investigation will provide theoretical support for the large-scale recycling of spent liBs.

关键词： Al removal F leaching Cathode powder Heating alkali leaching Leaching kinetics

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交直流混联系统节点网损微增率算法

电网技术 2016年第4期40卷 1081-1086页

作者：常鲜戎李衍孜华北电力大学电气与电子工程学院河北省保定市071003

交直流混联系统的网损问题和传统交流系统的有很大不同。交流系统主要通过配置无功来降低网损,而直流系统主要通过调节直流有功功率来降低网损。交直流混联系统的网损问题就变得更加复杂。对增广雅可比矩阵进行修正,将直流系统的有功和... 详细信息

交直流混联系统的网损问题和传统交流系统的有很大不同。交流系统主要通过配置无功来降低网损,而直流系统主要通过调节直流有功功率来降低网损。交直流混联系统的网损问题就变得更加复杂。对增广雅可比矩阵进行修正,将直流系统的有功和无功功率设作和电压相关的交流负荷,与交流系统的网损微增率算法相结合,提出一种能够计及平衡节点的交直流混联系统网损微增率算法。该算法能够直接计算包括平衡节点在内各节点的网损微增率,可以任意选取平衡节点而且计算结果不受影响。在IEEE 9、IEEE 22、IEEE 39节点系统算例计算结果验证了该算法的合理性,并且在计算精度和计算速度方面具有较大的优越性。

关键词：交直流网损微增率平衡节点增广雅可比矩阵

Additives strategies to improving cycling stability of li metal batteries by modifying electrode electrolyte interphases

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Progress in Natural Science:Materials International 2024年第2期34卷 338-344页

作者： Yuan li Pengfei Huang Chunyu Cui Xiaoyuan Ma li Chen Zekun li linhai li Yuhong Tian School of Biological and Chemical Engineering Guangxi University of Science and Technology School of College of Chemistry and Chemical Engineering Hunan University Isky Future Energy Institute

li metal batteries（LMBs） have attracted much attention due to the ultra-high theoretical capacity of the li metal anode（LMA）.However,the uncontrollable dendrites growth and low coulombic efficiency hinder their practical ***,we explore 3,5-difluoropyridine（2F-BD） as a novel electrolyte additive to enable highperformance *** 2F-BD additive participates in and modifies the solvation structure of li ions by reducing the coordinated number of PF6-at the electrode surface,leading to the formation of a liF and li3N-rich solid electrolyte interphase（SEI）.The liF component increases the robustness of SEI and suppresses the formation of li dendrites,while the li3N component facilitates the transportation and reaction kinetics of li *** a result,the li‖li symmetric cell presents a stable cycling performance of up to 500 h at a current density of 1 mA *** coupling with liFePO4cathode,the obtained full cell achieves high specific capacities of 106.06 mA h g-1and 84.98 mA h g-1at 2.55 mA cm-2and 5.10 mA cm-2,respectively,and maintains a high capacity retention of84.0% after 1000 cycles at 0.13 mA cm-2,with an average cycling CE of 99.58%.

关键词： Electrolyte additive li dendrites li metal batteries liF and li3N-Rich electrode-electrolyte interphase liFePO4 cathode