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Tortuosity regulation of two-dimensional nanofluidic films for water evaporation-induced electricity generation

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Nano Research 2024年第7期17卷 6192-6202页

作者： Zhihang Liu Chao Liu Anqi Ni kunpeng Mao Long Chen Liang Xue Jingwen Sun Xin wang Pan Xiong Junwu Zhu Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing 210094China

Water evaporation-induced electricity generation is a promising technology for renewable energy ***,the output power of some reported two-dimensional(2D)nanofluidic films is still restricted by the relatively weak water–solid interactions within the tortuous *** further enhance the comprehension and utilization of water–solid interactions,it is of utmost importance to conduct an in-depth investigation and propose a regulatory concept encompassing ion ***,we propose tortuosity regulation of 2D nanofluidic titanium oxide(Ti_(0.87)O_(2))films to optimize the ion transport within the interlayer nanochannel for enhanced efficiency in water evaporation-induced electricity generation for the first *** significance of tortuosity in ion transport is elucidated by designing three 2D nanofluidic films with different *** analysis and in situ Raman measurement demonstrate that low tortuosity can facilitate the formation of efficient pathways for hydrated proton transport and promote water–solid ***,devices fabricated with the optimized 2D nanofluidic films exhibited a significantly enhanced output power density of approximately 204.01μW·cm^(−2),far exceeding those prepared by the high-tortuosity 2D nanofluidic *** work highlights the significance of the construction of low tortuosity channels for 2D nanofluidic films with excellent performance.

关键词： water evaporation-induced electricity generation tortuosity ion transport two-dimensional nanofluidic films

Flexible and Robust Functionalized Boron Nitride/Poly(p‑Phenylene Benzobisoxazole)Nanocomposite Paper with High Thermal Conductivity and Outstanding Electrical Insulation

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Nano-Micro Letters 2024年第2期16卷 423-437页

作者： Lin Tang kunpeng Ruan Xi Liu Yusheng Tang Yali Zhang Junwei Gu Chongqing Key Laboratory of Green Synthesis and Applications College of ChemistryChongqing Normal UniversityChongqing 401331People’s Republic of China Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China

With the rapid development of 5G information technology,thermal conductivity/dissipation problems of highly integrated electronic devices and electrical equipment are becoming *** this work,“high-temperature solid-phase&diazonium salt decomposition”method is carried out to prepare benzidine-functionalized boron nitride(m-BN).Subsequently,m-BN/poly(pphenylene benzobisoxazole)nanofiber(PNF)nanocomposite paper with nacremimetic layered structures is prepared via sol–gel film transformation *** obtained m-BN/PNF nanocomposite paper with 50 wt%m-BN presents excellent thermal conductivity,incredible electrical insulation,outstanding mechanical properties and thermal stability,due to the construction of extensive hydrogen bonds andπ–πinteractions between m-BN and PNF,and stable nacre-mimetic layered ***λ∥andλ_(⊥)are 9.68 and 0.84 W m^(-1)K^(-1),and the volume resistivity and breakdown strength are as high as 2.3×10^(15)Ωcm and 324.2 kV mm^(-1),***,it also presents extremely high tensile strength of 193.6 MPa and thermal decomposition temperature of 640°C,showing a broad application prospect in high-end thermal management fields such as electronic devices and electrical equipment.

关键词： Poly(p-phenylene-2,6-benzobisoxazole)nanofiber Boron nitride Thermal conductivity Electrical insulation

Synchronous deprotonation–protonation for mechanically robust chitin/aramid nanofibers conductive aerogel with excellent pressure sensing, thermal management, and electromagnetic interference shielding

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Nano Research 2024年第3期17卷 2038-2049页

作者： Xinxin Zhang kunpeng Qian Jianhui Fang Sineenat Thaiboonrod Miao Miao Xin Feng Department of Chemistry College of SciencesShanghai UniversityShanghai 200444China Research Center of Nano Science and Technology College of SciencesShanghai UniversityShanghai 200444China School of Materials Sciences and Engineering Shanghai UniversityShanghai 200444China National Nanotechnology Center(NANOTEC) National Science and Technology Development Agency(NSTDA)Thailand Science ParkPathum Thani 12120Thailand

Aerogels with regularly porous structure and uniformly distributed conductive networks have received extensive attention in wearable electronic sensors,electromagnetic shielding,and so ***,the poor mechanical properties of the emerging nanofibers-based aerogels are limited in practical *** this work,we developed a synchronous deprotonation–protonation method in the KOH/dimethyl sulfoxide(DMSO)system at room temperature for achieving chitin cross-linked aramid nanofibers(CANFs)rather than chitin nanofibers(ChNFs)and aramid nanofibers(ANFs)separately by using chitin and aramid pulp as raw *** freeze-drying process,the cross-linked chitin/aramid nanofibers(CA)aerogel exhibited the synergetic properties of ChNF and ANF by the dual-nanofiber compensation *** mechanical stress of CA aerogel was 170 kPa at 80%compressive strain,increased by 750%compared with pure ChNF ***,the compressibility of CA aerogel was somewhat improved compared to ANF *** enhancement verified that the crosslinking reaction between ANF and ChNF during the synchronous deprotonation process was ***,the conductive aerogels with uniform porous structure(CA-M)were successfully obtained by vacuum impregnating CA aerogels in Ti_(3)C_(2)T_(x) MXene solution,displaying low thermal conductivity(0.01 W/(m·K)),high electromagnetic interference(EMI)shielding effectiveness(SE)(75 dB),flame retardant,and heat ***,the as-obtained CA-M aerogels were also applied as a pressure sensor with excellent compression cycle stability and superior human motion monitoring *** a result,the dual-nanofiber based conductive aerogels have great potentials in flexible/wearable electronics,EMI shielding,flame retardant,and heat insulation.

关键词： synchronous deprotonation–protonation electromagnetic interference(EMI)shielding flame retardant heat insulation pressure sensing

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从竹书《金縢》看战国时期的古史述作

史学月刊 2017年第3期 86-94页

作者：王坤鹏吉林大学历史系

战国时期古史述作蔚然成风,竹书《金縢》为我们提供了一个绝佳的分析对象。其时古史述作多单篇流行,故一个传说常有多种文本。述作者常选择改编古史传说的某种版本,通过损减枝叶、增饰细节、设置对话、置换背景等方式,展现述作者的思想... 详细信息

战国时期古史述作蔚然成风,竹书《金縢》为我们提供了一个绝佳的分析对象。其时古史述作多单篇流行,故一个传说常有多种文本。述作者常选择改编古史传说的某种版本,通过损减枝叶、增饰细节、设置对话、置换背景等方式,展现述作者的思想观念,传达时代主题。切合战国时期秩序变动的时代特点,政治理想及君臣际遇成了士人念兹在兹的核心主题之一,出现了一批相关的古史述作,无论正面反面,均深度契合当时的观念变化,反映了时人的关注焦点。受诸子学术的影响,该时期古史述作亦具有"史有子意"的突出特点。这一特点由《史记》等继承,遂成为传统史学的一个基因。在由史官记注向主题性撰述转变的过程中,早期官方史学书过、监察的政治职能渐至湮灭,记述世俗功业、寻绎古今之变以作鉴戒逐渐成为传统史学的重要职能。

关键词：战国古史清华简《金縢》

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“均”之思:社会转型期思想变化的一个案例

孔子研究 2022年第1期 42-50,156页

作者：王坤鹏吉林大学中国史系长春130012

先秦诸子针对现实问题集中阐发了包括均地、均政与均贫富等在内的"均"观念。均地之议主要从保民生、尽民力、土地管理及赋税征收等角度生发,均政之议包含均平爵禄、均用民力、均治天下等不同层面。相关论议的产生有其背景:一是战国时期... 详细信息

先秦诸子针对现实问题集中阐发了包括均地、均政与均贫富等在内的"均"观念。均地之议主要从保民生、尽民力、土地管理及赋税征收等角度生发,均政之议包含均平爵禄、均用民力、均治天下等不同层面。相关论议的产生有其背景:一是战国时期生产水平的大幅提高,使得小家庭从宗族中分离出来成为独立经济单位;二是官—民二元格局形成,需要建立新的社会与政治伦理关系;三是华夏文化圈统一趋势日益明显,均平天下成为主流思潮。诸子"均"之思,不管是均地、均政抑或均贫富,都切中了社会现实问题,少有虚渺玄远的内容,相较西周时期产生了根本性的转变,体现了战国时期个体价值的发现,是其时建立新的社会与政治伦理关系的重要组成部分。

关键词：均观念社会思想诸子社会转型期

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西周“亩臣”考

中国史研究 2023年第1期 23-38页

作者：王坤鹏吉林大学历史系

季姬方尊铭文中的“亩臣”是指在贵族采邑从事农业生产的臣服群体,铭文反映了西周贵族使用“臣”从事农耕生产的情况。“亩臣”主要来源于周人在扩张过程中俘虏或接受的外族臣服者。将臣服族群转变为从事农耕或其他力役的劳动者是上古... 详细信息

季姬方尊铭文中的“亩臣”是指在贵族采邑从事农业生产的臣服群体,铭文反映了西周贵族使用“臣”从事农耕生产的情况。“亩臣”主要来源于周人在扩张过程中俘虏或接受的外族臣服者。将臣服族群转变为从事农耕或其他力役的劳动者是上古时期常见的一种处置方案。西周早期,周王拥有的“臣”为数不少,是以在分封或赏赐贵族时常有“臣”之赐与,其中大多应即农耕之臣。相较于同为基层农业生产者的“庸”,从事农耕的“臣”多从故土迁离,对贵族领主的人身依附性更大。被称为“亩臣”的农耕群体聚族而居,有以“师”为称的基层首领,通常以五进制编制而成,便于加强管理、安排生产及征发劳役。“亩臣”作为生产组织在贵族田地里集体劳作,其产出的相当一部分归贵族宗族所有。

关键词：西周农业经济亩臣季姬方尊

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地基激光清除空间碎片的策略

北京航空航天大学学报 2015年第11期41卷 2137-2143页

作者：王成林张艳王鲲鹏北京跟踪与通信技术研究所北京100094

空间碎片的清除策略是实现地基激光主动清除厘米级空间碎片的关键技术之一.为了制定有效的清除策略,首先对在碎片轨道不同位置上速度分量的变化对其新轨道近地点高度的影响进行了研究,指明了3种不同速度分量变化的降轨效果的差异;然后... 详细信息

空间碎片的清除策略是实现地基激光主动清除厘米级空间碎片的关键技术之一.为了制定有效的清除策略,首先对在碎片轨道不同位置上速度分量的变化对其新轨道近地点高度的影响进行了研究,指明了3种不同速度分量变化的降轨效果的差异;然后结合地基激光的几何和物理特性,推导了确定有效变轨区域的约束条件;最后据此提出了地基激光以连续脉冲变轨方式清除空间碎片的通用策略,并通过仿真实验,实现了利用地基激光清除空间碎片的目的,也验证了该清除策略的有效性.

关键词：地基激光空间碎片清除策略变轨仿真

Solubility of iron(Ⅲ) and nickel(Ⅱ) acetylacetonates in supercritical carbon dioxide

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Chinese Journal of Chemical Engineering 2024年第1期65卷 29-34页

作者： Haixin Sun Jianlei Qi Jianfei Sun Lin Li kunpeng Yu Jintao Wu Jianzhong Yin State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalian 116024China College of Chemical Engineering Inner Mongolia University of TechnologyHohhot 010051China

As a common precursor for supercritical CO_(2)(scCO_(2))deposition techniques,solubility data of organometallic complexes in scCO_(2)is crucial for the preparation of ***,metal acetylacetonates have shown great potential for the preparation of single-atom catalytic *** this study,the solubilities of iron(Ⅲ)acetylacetonate(Fe(acac)3)and nickel(Ⅱ)acetylacetonate(Ni(acac)2)were measured at the temperature from 313.15 to 333.15 K and in the pressure range of 9.5–25.2 MPa to accumulate new solubility *** was measured using a static weight loss *** semi-empirical models proposed by Chrastil and Sung et *** used to correlate the solubility data of Fe(acac)3 and Ni(acac)*** equations obtained can be used to predict the solubility of the same system in the experimental range.

关键词： Iron(III)acetylacetonate Nickel(II)acetylacetonate Supercritical carbon dioxide Solubility measurement Correlation model Phase equilibrium

Pufferfish gasdermin Ea is a significant player in the defense against bacterial pathogens

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Marine Life Science & Technology 2024年第3期6卷 462-474页

作者： Hang Xu kunpeng Qin Kangwei Hao Zihao Yuan Li Sun CAS and Shandong Province Key Laboratory of Experimental Marine Biology Institute of OceanologyCAS Center for Ocean Mega-ScienceChinese Academy of SciencesQingdao 266071China Laboratory for Marine Biology and Biotechnology Laoshan LaboratoryQingdao 266237China School of Marine Science University of Chinese Academy of SciencesQingdao 266400China

Gasdermins(GSDMs)are proteins cleaved by caspase(CASP)to trigger *** teleosts,pyroptosis is mediated by gasdermin E(GSDME).The Pufferfish,Takifugu rubripes,possesses two GSDME orthologs:named TrGSDMEa and *** is cleaved by CASP3/7 to liberate the N-terminal(NT)domain that can trigger pyroptosis in mammalian ***,the biological function of TrGSDMEa in pufferfish is unknown,and TrGSDMEb is poorly *** found that TrGSDMEb was cleaved by CASP1/3/6/7/8,but the resulting NT domain,despite its similarity to TrGSDMEa-NT domain in sequence and structure,failed to induce *** and TrGSDMEb exhibited similar expression patterns in pufferfish under normal physiological conditions but were up-and downregulated,respectively,in expression during Vibrio harveyi and Edwardsiella tarda *** infection induced the activation of TrGSDMEa and CASP3/7 in pufferfish cells,resulting in pyroptosis accompanied with IL-1βproduction and *** of TrGSDMEa-mediated pyroptosis via TrCASP3/7 reduced the death of pufferfish cells and augmented bacterial dissemination in fish ***-oriented mutagenesis identified 16 conserved residues in teleost GSDMEa that were required for the pore formation or auto-inhibition of *** study illustrates the role of GSDMEa-mediated pyroptosis in teleost defense against bacterial pathogens and provides new insights into the structure-based function of vertebrate GSDME.

关键词： GSDME Caspase Takifugu rubripes Bacterial infection Immune defense