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Heat Storage Performance of PCM in a Novel Vertical Pointer-Shaped Finned Latent Heat Tank

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Journal of Thermal Science 2024年第2期33卷 422-434页

作者： MAO Qianjun zhu yuanyuan LI Tao School of Urban Construction Wuhan University of Science and TechnologyWuhan430065China

The heat storage performance of latent heat storage systems is not good due to the poor thermal conductivity of phase change *** this paper,a new type of pointer-shaped fins combining rectangular and triangular fins has been employed to numerically simulate the melting process in the heat storage tank,and the fin geometry parameter effects on heat storage performance have been *** results indicate that compared with the bare tube and the rectangular finned tank,the melting time of the phase change material in the pointer-shaped finned tank is reduced by 64.2%and 15.1%,*** closer the tip of the triangular fin is to the hot wall,the better the heat transfer *** optimal height of the triangular fin is about 8 *** the number of fins from 4 to 6 and from 6 to 8 reduces the melting time by 16.0%and 16.7%***,increasing the number of fins from 8 to 10 only reduces the melting time by 8.4%.When the fin dimensionless length is increased from 0.3 to 0.5 and from 0.5 to 0.7,the melting time is shortened by 17.5%and 13.0%.But the melting time is only reduced by 2.9%when the dimensionless fin length is increased from 0.7 to *** optimising the design of the thermal storage system,the results can provide a reference value.

关键词： thermal energy storage phase change material pointer-shaped fins heat storage performance

Silica-modified Pt/TiO_(2) catalysts with tunable suppression of strong metal-support interaction for cinnamaldehyde hydrogenation

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Chinese Journal of Chemical Engineering 2024年第6期70卷 189-198页

作者： Zhengjian Hou yuanyuan zhu Hua Chi Li Zhao Huijie Wei Yanyan Xi Lishuang Ma Xiang Feng Xufeng Lin College of Chemistry and Chemical Engineering China University of Petroleum(East China)Qingdao 266580China Advanced Chemical Engineering and Energy Materials Research Center China University of Petroleum(East China)Qingdao 266580China State Key Laboratory of Heavy Oil Processing China University of Petroleum(East China)Qingdao 266580China

Tuning Strong Metal-support Interactions(SMSI)is a key strategy to obtain highly active catalysts,but conventional methods usually enable TiO_(x) encapsulation of noble metal components to minimize the exposure of noble *** study demonstrates a catalyst preparation method to modulate a weak encapsulation of Pt metal nanoparticles(NPs)with the supported TiO_(2),achieving the moderate suppression of SMSI *** introduction of silica inhibits this encapsulation,as reflected in the characterization results such as XPS and HRTEM,while the Ti^(4+) to Ti^(3+) conversion due to SMSI can still be found on the support ***,the hydrogenation of cinnamaldehyde(CAL)as a probe reaction revealed that once this encapsulation behavior was suppressed,the adsorption capacity of the catalyst for small molecules like H_(2) and CO was enhanced,which thereby improved the catalytic activity and facilitated the hydrogenation of ***,the introduction of SiO_(2) also changed the surface structure of the catalyst,which inhibited the occurrence of the acetal reaction and improved the conversion efficiency of C=O and C=C *** manipulation of SMSI formation and its consequence on the performance in catalytic hydrogenation reactions are discussed.

关键词： Pt catalyst Silica modification Hydrogenation Cinnamaldehyde Strong metal-support interaction

Targeting BCL9/BCL9L enhances antigen presentation by promoting conventional type 1 dendritic cell(cDC1)activation and tumor infiltration

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Signal Transduction and Targeted Therapy 2024年第6期9卷 2804-2818页

作者： Fenglian He Zhongen Wu Chenglong Liu yuanyuan zhu Yan Zhou Enming Tian Rina Rosin-Arbesfeld Dehua Yang Ming-Wei Wang Di zhu Department of Pharmacology Minhang Hospitaland Key Laboratory of Smart Drug DeliveryShanghai Engineering Research Center of Immune TherapySchool of PharmacyFudan UniversityShanghai 201203China The National Center for Drug Screening and the CAS Key Laboratory of Receptor Research Shanghai Institute of Materia MedicaChinese Academy of Sciences(CAS)Shanghai 201203China Department of Microbiology and Immunology Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael Department of Pharmacology School of Basic Medical SciencesFudan UniversityShanghai 200032China Research Center for Deepsea Bioresources SanyaChina Department of Chemistry School of ScienceThe University of TokyoTokyoJapan Engineering Research Center of Tropical Medicine Innovation and Transformation of Ministry of Education School of PharmacyHainan Medical UniversityHaikouChina Shandong Academy of Pharmaceutical Science JinanChina

Conventional type 1 dendritic cells(cDC1)are the essential antigen-presenting DC subset in antitumor *** B-cell lymphoma 9 and B-cell lymphoma 9-like(BCL9/BCL9L)inhibits tumor growth and boosts immune responses against ***,whether oncogenic BCL9/BCL9L impairs antigen presentation in tumors is still not completely ***,we show that targeting BCL9/BCL9L enhanced antigen presentation by stimulating cDC1 activation and infiltration into *** inhibition of BCL9/BCL9L with a novel inhibitor hsBCL9z96 or Bcl9/Bcl9l knockout mice markedly delayed tumor growth and promoted antitumor CD8^(+)T cell ***,targeting BCL9/BCL9L promoted antigen presentation in *** is due to the increase of cDC1 activation and tumor infiltration by the XCL1-XCR1 ***,using single-cell transcriptomics analysis,we found that Bcl9/Bcl9l deficient cDC1 were superior to wild-type(WT)cDC1 at activation and antigen presentation via NF-κB/IRF1 ***,we demonstrate that targeting BCL9/BCL9L plays a crucial role in cDC1-modulated antigen presentation of tumor-derived antigens,as well as CD8^(+)T cell activation and tumor *** BCL9/BCL9L to regulate cDC1 function and directly orchestrate a positive feedback loop necessary for optimal antitumor immunity could serve as a potential strategy to counter immune suppression and enhance cancer immunotherapy.

关键词： immunity Targeting markedly

Three-dimensional (3D)-printed MXene high-voltage aqueous micro-supercapacitors with ultrahigh areal energy density and low-temperature tolerance

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CARBON ENERGY 2024年第8期6卷 36-48页

作者： zhu, yuanyuan Zhang, Qingxiao Ma, Jiaxin Das, Pratteek Zhang, Liangzhu Liu, Hanqing Wang, Sen Li, Hui Wu, Zhong-Shuai Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Dalian 116023 Peoples R China Suzhou Univ Key Lab Spin Electron & Nanomat Anhui Higher Educ Suzhou Peoples R China Univ Chinese Acad Sci Beijing Peoples R China Chinese Acad Sci Dalian Natl Lab Clean Energy Dalian 116023 Peoples R China Shanghai Normal Univ Shanghai Key Lab Rare Earth Funct Mat Shanghai 200234 Peoples R China Shanghai Normal Univ Key Lab Resource Chem Educ Minist Shanghai 200234 Peoples R China

The rapid advancement in the miniaturization, integration, and intelligence of electronic devices has escalated the demand for customizable micro-supercapacitors (MSCs) with high energy density. However, efficient microfabrication of safe and high-energy MXene MSCs for integrating microelectronics remains a significant challenge due to the low voltage window in aqueous electrolytes (typically <= 0.6 V) and limited areal mass loading of MXene microelectrodes. Here, we tackle these challenges by developing a high-concentration (18 mol kg-1) "water-in-LiBr" (WiB) gel electrolyte for MXene symmetric MSCs (M-SMSCs), demonstrating a record high voltage window of 1.8 V. Subsequently, additive-free aqueous MXene ink with excellent rheological behavior is developed for three-dimensional (3D) printing customizable all-MXene microelectrodes on various substrates. Leveraging the synergy of a high-voltage WiB gel electrolyte and 3D-printed microelectrodes, quasi-solid-state M-SMSCs operating stably at 1.8 V are constructed, and achieve an ultrahigh areal energy density of 1772 mu Wh cm-2 and excellent low-temperature tolerance, with a long-term operation at -40 degrees C. Finally, by extending the 3D printing protocol, M-SMSCs are integrated with humidity sensors on a single planar substrate, demonstrating their reliability in miniaturized integrated microsystems. We introduce an additive-free aqueous MXene ink for three-dimensional printing customizable all-MXene microelectrodes, enabling the construction of quasi-solid-state MXene symmetric micro-supercapacitors (M-SMSCs? operating at 1.8 V. These M-SMSCs show an ultrahigh areal energy density of 1753 mu Wh cm-2 and exceptional low-temperature performance, operating reliably at -40 degrees C. Integration with humidity sensors on a single planar substrate showcases the potential for miniaturized integrated microsystems. image

关键词： 3D printing aqueous electrolyte high voltage micro-supercapacitors MXene ELECTROLYTE WATER MICROSUPERCAPACITORS PERSPECTIVES CHALLENGES

2.4 V ultrahigh-voltage aqueous MXene-based asymmetric micro-supercapacitors with high volumetric energy density toward a self-sufficient integrated microsystem

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Fundamental Research 2024年第2期4卷 307-314页

作者： yuanyuan zhu Shuanghao Zheng Jieqiong Qin Jiaxin Ma Pratteek Das Feng Zhou Zhong-Shuai Wu State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Shijingshan DistrictBeijing 100049China College of Science Henan Agricultural UniversityZhengzhou 450002China Dalian National Laboratory for Clean Energy Chinese Academy of SciencesDalian 116023China Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes Suzhou UniversitySuzhou 234000China

Two-dimensional MXenes are key high-capacitance electrode materials for micro-supercapacitors(MSCs)catering to integrated ***,the narrow electrochemical voltage windows of conventional aqueous electrolytes(≤1.23 V)and symmetric MXene MSCs(typically≤0.6 V)substantially limit their output voltage and energy *** concentrated aqueous electrolytes exhibit lower water molecule activity,which inhibits water splitting and consequently widens the operating voltage ***,we report ultrahigh-voltage aqueous planar asymmetric MSCs(AMSCs)based on a highly concentrated LiCl-gel quasi-solid-state electrolyte with MXene(Ti3C2Tx)as the negative electrode and MnO_(2) nanosheets as the positive electrode(MXene//MnO_(2)-AMSCs).The MXene//MnO_(2)-AMSCs exhibit a high voltage of up to 2.4 V,attaining an ultrahigh volumetric energy density of 53 mWh cm−***,the in-plane geometry and the quasi-solid-state electrolyte enabled excellent mechanical flexibility and performance uniformity in the serially/parallel connected packs of our ***,the MXene//MnO_(2)-AMSC-based integrated microsystem,in conjunction with solar cells and consumer electronics,could efficiently realize simultaneous energy harvesting,storage,and *** findings of this study provide insights for constructing high-voltage aqueous MXene-based AMSCs as safe and self-sufficient micropower sources in smart integrated microsystems.

关键词： Asymmetric micro-supercapacitors MXene MnO_(2) Aqueous electrolyte High voltage Integrated microsystem

中国乡村社会空间重构过程再认知及展望——基于人口城乡逆流视角

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地理科学进展 2024年第2期43卷 374-386页

作者：朱媛媛罗源华中师范大学地理过程分析与模拟湖北省重点实验室武汉430079 湖北省发展和改革委员会/华中师范大学武汉城市圈研究院武汉430079

城乡人口流动是改变并形成新城乡关系的重要驱动力。伴随中国城乡融合的深度发展,中国城乡人口流动出现新动向,即人口城乡逆流,这一重要社会现象正推动着乡村社会联系与发展。人业互动作用下作为空间载体的乡村社会空间的演进与重构呈... 详细信息

城乡人口流动是改变并形成新城乡关系的重要驱动力。伴随中国城乡融合的深度发展,中国城乡人口流动出现新动向,即人口城乡逆流,这一重要社会现象正推动着乡村社会联系与发展。人业互动作用下作为空间载体的乡村社会空间的演进与重构呈现出新的时代特征,探讨中国乡村“人—地—业”格局复杂化背景下的人口城乡逆流对乡村社会空间的重构过程,对于理解目前“城乡中国”面临的困境与机遇具有重要的理论和现实意义。论文从城乡人口流动与乡村重构、乡村产业发展与乡村社会空间演变、乡村社会空间重构过程及效应等核心研究领域着手,利用VOSviewer工具对国内外相关文献进行梳理,凝练出当前研究重点关注主题取得的成效与亟需解决的瓶颈,进而从人口城乡逆流重构乡村社会空间的理论分析框架、过程规律、作用机理、地方效应等4个方向进行研究展望,旨在重新认知并诠释新时代中国人口城乡逆流现象,破解城乡融合深度发展的人口问题,为缩小城乡发展不平衡、实现城乡共同繁荣提供科学理论依据和支撑。

关键词：人口城乡逆流乡村产业发展乡村空间重构乡村社会空间

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学校变革中的教师知识景观变构

全球教育展望 2024年第4期53卷 105-117页

作者：朱园园华东师范大学马克思主义学院上海200241

教师是教育改革成功与否的关键力量,这是基本共识。当教育改革不成功时,人们多从教师职业信念、专业素养或是教育生态等方面进行简单归因,但这些思路忽视了教师与其所处环境之间相互建构的复杂关系。本研究以月城初中为例,运用“教师知... 详细信息

教师是教育改革成功与否的关键力量,这是基本共识。当教育改革不成功时,人们多从教师职业信念、专业素养或是教育生态等方面进行简单归因,但这些思路忽视了教师与其所处环境之间相互建构的复杂关系。本研究以月城初中为例,运用“教师知识景观”概念探究并揭示这一复杂图景。教师知识景观是描述教师知识与其所处社会文化背景间复杂关系的隐喻性概念。教师知识景观变构是变革情境中教师知识内在转变及其新质生成的结果,涉及多层面与因素所发生的动态性和根本性变化。研究发现,学校转型变革中,教师知识景观发生了多层次的变构,包括生态层面的整体转变,变革、身份和专业等知识层面的内在转化,以及关乎个体生命成长的意义实现。深入剖析教师知识景观变构的内在机制,“价值—制度—行动”等外部联动性因素提供持续而稳定的环境中介;教师对内在发展、自我生命价值实现的需求与意义确认,是促使教师知识景观深度变构的内部决定性因素。由此,我们需要深层透视教师知识景观中的关键主体角色,以激发深层变构力;理性处理张力关系,以促进教师深度自省;建构多元教师知识社群,以形成共生式叙事。

关键词：学校变革教师知识教师知识景观变构 “生命·实践”教育学

中国植物性饮食结构调整具有显著的耕地资源效应

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Science Bulletin 2024年第6期69卷 737-740页

作者：朱晓华张燕朱媛媛李裕瑞 Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China Key Laboratory of Geographic Process Analysis&Simulation Hubei Province Central China Normal UniversityWuhan 430079China

Food systems are already a major contributor to land degradation,and changes in global diets will exacerbate this situation[1].Population growth and affluent dietary patterns result in changes in land demand and land-use patterns,and up to 40% of global arable land and more than 30% of global food-crop production are used for animal feed[2].Furthermore,food-feed competition can result in an inadequate food supply[3].

关键词：耕地资源 arable food

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综合性护理在急诊宫外孕患者中的应用效果

实用妇科内分泌电子杂志 2024年第9期11卷 109-111页

作者：祝园园西安交通大学第一附属医院急诊科陕西西安710000

目的探讨综合性护理在急诊宫外孕患者中的应用效果。方法选取本院收治的70例急诊宫外孕患者为研究对象,利用随机数字表法分为两组,各35例。对照组接受常规护理,观察组接受综合性护理,比较两组的生活质量、负性情绪。结果观察组生理功能... 详细信息

目的探讨综合性护理在急诊宫外孕患者中的应用效果。方法选取本院收治的70例急诊宫外孕患者为研究对象,利用随机数字表法分为两组,各35例。对照组接受常规护理,观察组接受综合性护理,比较两组的生活质量、负性情绪。结果观察组生理功能、社会功能、情感职能、精神健康评分高于对照组,焦虑自评量表、抑郁自评量表评分低于对照组(P<0.05)。结论对急诊宫外孕患者采取综合性护理,效果显著,具有一定临床推广价值。

关键词：综合性护理宫外孕应用效果