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Science China Chemistry 2024年

作者： Xianzhe Wei Jincheng Liu Yan Su Weitao Wang Guixiang Wang gen Zhang Ping Wang Cheng Gu State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and Devices South China University of Technology College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education School of Chemistry and Chemical EngineeringNanjing University of Science and Technology

Designing efficient proton-conductive materials is crucial in fuel cells. Yet, it remains a substantial challenge because of the issues in proton mobility, proton-carrier amount, and orientation of proton host materials. Herein, we report an in-situ protonation strategy to produce a locally flexible porous coordination polymer(PCP) to enhance the proton-carrier loading and proton conductivity. The local dipole flipping of the ligand allows effective proton exchange with low activation energy, promoting interpore proton transport through the pore apertures and pore walls. The protonation induces substantial charges to the frameworks and enhances the interaction with proton carriers, thereby increasing the loading of the proton carriers. By this design strategy, the resulting PCP exhibits enhanced phosphoric acid loading and extraordinary proton conductivities under both aqueous and anhydrous conditions compared to its isoreticular analog that features rigidity without proton-exchange *** work provides a new avenue for designing proton-conductive materials that combine structural dynamics with performance merits.

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A seismic elastic moduli module for the measurements of low-frequency wave dispersion and attenuation of fluid-saturated rocks under different pressures

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Petroleum Science 2024年第1期21卷 162-181页

作者： Yan-Xiao He Shang-Xu Wang gen-Yang Tang Chao Sun Hong-Bing Li San-Yi Yuan Xian Wei Li-Deng Gan Xiao-Feng Dai Qiang Ge Peng-Peng Wei Hui-Qing Zhang National Key Laboratory of Petroleum Resources and Engineering CNPC Key Lab of Geophysical ExplorationCollege of GeophysicsChina University of Petroleum(Beijing)Beijing102249China School of Resources and Geosciences China University of Mining and TechnologyXuzhou221116JiangsuChina Research Institute of Petroleum Exploration and Development CNPCBeijing100083China Beijing Vocational College of Labour and Social Security Beijing100029China PetroChina Dagang Oilfield Exploration and Development Research Institute CNPCTianjin300280China

Knowledge about the seismic elastic modulus dispersion,and associated attenuation,in fluid-saturated rocks is essential for better interpretation of seismic observations taken as part of hydrocarbon identification and time-lapse seismic surveillance of both conventional and unconventional reservoir and overburden performances.A Seismic Elastic Moduli Module has been developed,based on the forced-oscillations method,to experimentally investigate the frequency dependence of Young's modulus and Poisson's ratio,as well as the inferred attenuation,of cylindrical samples under different confining pressure *** with three standard samples showed that the measured elastic moduli were consistent with the published data,indicating that the new apparatus can operate reliably over a wide frequency range of f∈[1-2000,10^(6)]*** Young's modulus and Poisson's ratio of the shale and the tight sandstone samples were measured under axial stress oscillations to assess the frequency-and pressure-dependent *** dry condition,both samples appear to be nearly frequency independent,with weak pressure dependence for the shale and significant pressure dependence for the *** particular,it was found that the tight sandstone with complex pore microstructure exhibited apparent dispersion and attenuation under brine or glycerin saturation conditions,the levels of which were strongly influenced by the increased effective *** addition,the measured Young's moduli results were compared with the theoretical predictions from a scaled poroelastic model with a reasonably good agreement,revealing that the combined fluid flow mechanisms at both mesoscopic and microscopic scales possibly responsible for the measured dispersion.

关键词： Low-frequency measurements Dispersion and attenuation Rock physics Fluid flow

从一大到二十大:党章修改视角下中共宣传工作的制度建设

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兰州大学学报（社会科学版） 2024年第2期52卷 131-139页

作者：邓绍根中国人民大学新闻与社会发展研究中心北京100871

《中国共产党章程》不仅是立党之本,而且是党的总章程和党的根本大法。党的全国代表大会是党的最高领导机关,总是根据理论创新和实践创新的需要对党章进行修改。宣传工作是党的一项极端重要的工作,是中国共产党领导人民不断夺取革命、... 详细信息

《中国共产党章程》不仅是立党之本,而且是党的总章程和党的根本大法。党的全国代表大会是党的最高领导机关,总是根据理论创新和实践创新的需要对党章进行修改。宣传工作是党的一项极端重要的工作,是中国共产党领导人民不断夺取革命、建设、改革胜利的优良传统和政治优势。中国共产党百余年来的光辉历程,既是其党章修改完善的历史,又是其宣传工作制度建设的发展史。从党的一大到二十大,中国共产党不断将理论、实践、制度以及其他各方面的创新成果载入党章;从党章修改视角看中共宣传工作制度建设,中国共产党宣传工作始终坚持党的领导,坚持党管宣传、党管意识形态、党管媒体,不断开拓创新,积极推动着党的宣传工作制度建设逐步展开、曲折前行、丰富发展、创新完善等四个历史阶段,助力创造了中国革命、建设和改革的伟大成就,推进了中华民族伟大复兴历史进程。

关键词：中国共产党党章宣传工作党的二十大精神

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化石有机碳风化及其生物地球化学循环效应

中国科学：地球科学 2024年第6期54卷 2098-2102页

作者：李高军 gen K.LI 南京大学地球与行星科学系南京210023 Department of Earth Science University of CaliforniaSanta BarbaraCA 93106USA

生命过程是地球物质循环有别于其他行星最重要的特征之一.生命过程的重要一环是碳基生物通过光合作用将大气CO_(2)转化为有机形式的碳化合物,并释放氧气(Derry, 2014).化石有机碳,亦称为岩石有机碳,是一类在漫长地质历史时期积累并石化... 详细信息

生命过程是地球物质循环有别于其他行星最重要的特征之一.生命过程的重要一环是碳基生物通过光合作用将大气CO_(2)转化为有机形式的碳化合物,并释放氧气(Derry, 2014).化石有机碳,亦称为岩石有机碳,是一类在漫长地质历史时期积累并石化在岩石圈中的独特有机碳.化石有机碳与碳酸盐为主的无机形式碳一起成为固体地球去气作用CO_(2)释放最主要的汇,共同组成地球系统的两大核心碳储库.

关键词：固体地球碳化合物生物地球化学循环物质循环去气作用有机碳漫长地质历史碳储库

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Through-polymer,via technology-enabled,flexible,lightweight,and integrated devices for implantable neural probes

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Microsystems & Nanoengineering 2024年第2期10卷 279-291页

作者： Cunkai Zhou Ye Tian gen Li Yifei Ye Lusha Gao Jiazhi Li Ziwei Liu Haoyang Su Yunxiao Lu Meng Li Zhitao Zhou Xiaoling Wei Lunming Qin Tiger H.Tao Liuyang Sun College of Electronics and Information Engineering Shanghai University of Electric PowerShanghaiChina 2020 X-Lab Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghaiChina School of Graduate Study University of Chinese Academy of SciencesBeijingChina State Key Laboratory of Transducer Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghaiChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina School of Physical Science and Technology ShanghaiTech UniversityShanghaiChina Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of SciencesShanghaiChina Neuroxess Co. Ltd.(Jiangxi)NanchangJiangxiChina Guangdong Institute of Intelligence Science and Technology HengqinZhuhaiGuangdongChina Tianqiao and Chrissy Chen Institute for Translational Research ShanghaiChina

In implantable electrophysiological recording systems,the headstage typically comprises neural probes that interface with brain tissue and integrated circuit chips for signal *** advancements in MEMS and CMOS technology have significantly improved these components,their interconnection still relies on conventional printed circuit boards and sophisticated *** conventional approach adds considerable weight and volume to the package,especially for high channel count *** address this issue,we developed a through-polymer via(TPV)method inspired by the through-silicon via(TSV)technique in advanced three-dimensional *** innovation enables the vertical integration of flexible probes,amplifier chips,and PCBs,realizing a flexible,lightweight,and integrated device(FLID).The total weight of the FLIDis only 25%that of its conventional counterparts relying on adapters,which significantly increased the activity levels of animals wearing the FLIDs to nearly match the levels of control animals without ***,by incorporating a platinum-iridium alloy as the top layer material for electrical contact,the FLID realizes exceptional electrical performance,enabling in vivo measurements of both local field potentials and individual neuron action *** findings showcase the potential of FLIDs in scaling up implantable neural recording systems and mark a significant advancement in the field of neurotechnology.

关键词： alloy neural recording

Hydrogen-rich water alleviates constipation by attenuating oxidative stress through the sirtuin1/nuclear factor-erythroid-2-related factor 2/heme oxygenase-1 signaling pathway

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World Journal of Gastroenterology 2024年第20期30卷 2709-2725页

作者： Kai-Di Chen Kui-Ling Wang Chen Chen Yi-Jia Zhu Wen-Wen Tang Yu-Ji Wang Ze-Peng Chen Lin-Hai He Yu-gen Chen Wei Zhang Jiangsu Province Hospital of Chinese Medicine The Affiliated Hospital of Nanjing University of Chinese MedicineNanjing 210029Jiangsu ProvinceChina The No.1 Clinical Medical College Nanjing University of Chinese MedicineNanjing 210029Jiangsu ProvinceChina Department of Colorectal Surgery Jiangsu Province Hospital of Chinese MedicineThe Affiliated Hospital of Nanjing University of Chinese MedicineNanjing 210029Jiangsu ProvinceChina Jiangsu Province Key Laboratory of Tumor Systems Biology and Chinese Medicine The Affiliated Hospital of Nanjing University of Chinese MedicineNanjing 210029Jiangsu ProvinceChina Jiangsu Collaborative Innovation Center of Chinese Medicine in Prevention and Treatment of Tumor The Affiliated Hospital of Nanjing University of Chinese MedicineNanjing 210029Jiangsu ProvinceChina

BACKGROUND Constipation,a highly prevalent functional gastrointestinal disorder,induces a significant burden on the quality of patients'life and is associated with substantial healthcare ***,identifying efficient therapeutic modalities for constipation is of paramount *** stress is a pivotal contributor to colonic dysmotility and is the underlying pathology responsible for constipation ***,we postulate that hydrogen therapy,an emerging and promising intervention,can serve as a safe and efficacious treatment for *** To determine whether hydrogen-rich water(HRW)alleviates constipation and its potential *** Constipation models were established by orally loperamide to Sprague-Dawley *** freely consumed HRW,and were recorded their 24 h total stool weight,fecal water content,and charcoal propulsion *** samples were subjected to 16S rDNA gene *** non-targeted metabolomic analysis,malondialdehyde,and superoxide dismutase levels were *** tissues were stained with hematoxylin and eosin,Alcian blue-periodic acid-Schiff,reactive oxygen species(ROS)immunofluorescence,and immunohistochemistry for cell growth factor receptor kit(c-kit),PGP 9.5,sirtuin1(SIRT1),nuclear factor-erythroid-2-related factor 2(Nrf2),and heme oxygenase-1(HO-1).Quantitative real-time PCR and western blot analysis were conducted to determine the expression level of SIRT1,Nrf2 and HO-1.A rescue experiment was conducted by intraperitoneally injecting the SIRT1 inhibitor,EX527,into constipated ***460 cells were induced with H2O2 and treated with the metabolites to evaluate ROS and SIRT1 *** HRW alleviated constipation symptoms by improving the total amount of stool over 24 h,fecal water content,charcoal propulsion rate,thickness of the intestinal mucus layer,c-kit expression,and the number of intestinal *** modulated intestinal microbiota imbalance and abnormaliti

关键词： Hydrogen-rich water Constipation Sirtuin1 Oxidative stress Gut microbiota Serum metabolites

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学生欺凌治理二元论及其法律建构

探索与争鸣 2024年第7期 85-95,178页

作者：张善根上海政法学院法律学院上海201701

学生欺凌治理应当以二元论为基础,不断对学生欺凌治理进行系统化的法律建构。其基本思路是,在一元治理体系之外,以未成年人为基准,建构以学校为中心的学生欺凌治理体系。一方面,通过管教权建构学校管教体系及社会支持体系,不断完善学生... 详细信息

学生欺凌治理应当以二元论为基础,不断对学生欺凌治理进行系统化的法律建构。其基本思路是,在一元治理体系之外,以未成年人为基准,建构以学校为中心的学生欺凌治理体系。一方面,通过管教权建构学校管教体系及社会支持体系,不断完善学生欺凌治理体系。另一方面,通过建构学生欺凌治理能力标准体系、提升体系和评价体系,全面提升学校的学生欺凌治理能力。只有对学生欺凌二元治理进行全面性、整体性、体系化的顶层设计,才能有效应对学生欺凌问题,实现前端治理。同时,二元治理并非仅限于学校治理层面。二元治理格局不仅在于学校与成人社会的分治,更在于形成二元治理结构促成共治。因此,二元治理还需要建构二元协同机制,塑造分级干预、分层治理体系。从更长远计,应当充分重视并考量学校作为“未成年人社会”这一基本属性,以学校为基本场域,整合关于未成年人的相关制度规范,建构与“未成年人社会”相适应的法律系统和治理体系。

关键词：未成年人学生欺凌校园暴力一元治理二元治理

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磁畴壁拓扑结构研究进展

物理学报 2024年第1期73卷 57-68页

作者：张颖李卓霖沈保根中国科学院物理研究所磁学国家重点实验室北京100190

拓扑磁性斯格明子作为信息载体单元具备高可靠性、高集成度、低能耗等优势,有望提高数据读写精度、降低功耗,从而研发新型拓扑自旋电子学材料与原理型器件,为信息技术、5G通信和大数据等的高速发展提供材料与技术支持.但磁性斯格明子同... 详细信息

拓扑磁性斯格明子作为信息载体单元具备高可靠性、高集成度、低能耗等优势,有望提高数据读写精度、降低功耗,从而研发新型拓扑自旋电子学材料与原理型器件,为信息技术、5G通信和大数据等的高速发展提供材料与技术支持.但磁性斯格明子同时存在需要磁场稳定以及电流驱动下斯格明子霍尔效应引起偏转等缺点,严重阻碍了其在实际器件中的应用,因此探索新型拓扑磁畴结构和适宜应用的材料体系成为研究的关键.本文将重点介绍自2013年理论预言磁畴壁斯格明子以来,利用高分辨率洛伦兹透射电子显微镜原位实空间发现并研究磁畴壁拓扑麦纫和磁畴壁斯格明子的实验工作.首次在范德瓦耳斯Fe_(5–x)GeTe_(2)二维磁性材料中发现温度诱发的180°磁畴壁转变为拓扑麦韧链,研究了磁畴壁麦纫态在外界电场、磁场作用下的集体运动行为,揭示了基于自旋重取向、磁畴壁限域效应以及弱相互作用下生成磁畴壁拓扑态的机制.在该机制指导下,设计制备了具有自旋重取向的GdFeCo非晶亚铁磁薄膜,不仅获得了磁畴壁麦纫,验证了生成机制的普适性,还成功实现了畴壁麦韧对到畴壁斯格明子的可逆拓扑转变,开辟了基于磁畴壁等内禀限域效应开展拓扑磁性物态探索和研究的新方向.

关键词：磁畴壁麦纫磁畴壁斯格明子自旋重取向洛伦兹透射电子显微镜二维磁性材料

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党建引领基层治理的历史逻辑、制度密码与实践样态——超越“国家—社会”范式的分析

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西南大学学报（社会科学版） 2024年第2期50卷 73-84页

作者：郭根梁豪上海理工大学马克思主义学院上海200093

中国共产党在治国理政实践中,以鲜明的政治品格和强大的政治优势高质量领导国家建设,高水平融入社会治理,全面推进中国式现代化。源于西方学术话语的“国家—社会”范式却无法为中国的治理叙事提供科学解释,在微观视角、理论逻辑以及结... 详细信息

中国共产党在治国理政实践中,以鲜明的政治品格和强大的政治优势高质量领导国家建设,高水平融入社会治理,全面推进中国式现代化。源于西方学术话语的“国家—社会”范式却无法为中国的治理叙事提供科学解释,在微观视角、理论逻辑以及结构方法等方面呈现失语状态。回溯改革开放以来党建引领基层治理的历史逻辑,经由街居党建、社区党建和区域化大党建,党建在基层治理中的核心地位、战略功能得以不断拓展。同时,党建机制深度融入基层治理,实现了对“行政化治理”“多中心治理”以及“技术化治理”的超越,进而在化解三大困境与不足过程中彰显了“中国之治”的基层密码。而在实践上,凭借引领政权能力建设、融入社会治理体系、贯通应急治理过程,党建为提升基层治理效能,夯实党的执政基础,维护社会安全稳定提供了重要保障。作为中国基层治理的制度优势、实践品质和重要法宝,党建引领已然成为超越西方治理范式、构建中国特色自主知识体系的逻辑起点和既成事实。

关键词：党建引领合作治理协同治理情感治理接诉即办楼宇党建

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斑岩-矽卡岩型钼矿成矿控制因素

矿物岩石地球化学通报 2024年第2期43卷 271-281,I0002页

作者：欧阳荷根中国地质科学院矿产资源研究所自然资源部成矿作用与资源评价重点实验室北京100037

本文从成钼矿岩浆的化学组分和物理化学性质,以及成钼矿流体的出溶和金属堆积过程两个层次,探讨了斑岩-矽卡岩型钼矿的成矿控制因素。研究揭示,不同构造环境中的斑岩-矽卡岩型钼矿的成矿岩浆均不富集钼,氧化性富水岩浆是形成斑岩-矽卡... 详细信息

本文从成钼矿岩浆的化学组分和物理化学性质,以及成钼矿流体的出溶和金属堆积过程两个层次,探讨了斑岩-矽卡岩型钼矿的成矿控制因素。研究揭示,不同构造环境中的斑岩-矽卡岩型钼矿的成矿岩浆均不富集钼,氧化性富水岩浆是形成斑岩-矽卡岩型钼矿的基础,成矿流体沿岩浆房顶部衍生的小岩株高度聚集是成钼矿之关键环节。研究还揭示,大型-超大型斑岩-矽卡岩型钼矿均具有多期岩浆-热液活动叠加成矿的特点,成矿岩体与大岩浆房相连,并且成矿岩浆能多期侵位与成矿,是形成大型-超大型钼矿的关键因素。综合来看,斑岩-矽卡岩型钼矿是岩浆体量、岩浆氧逸度和水含量、流体聚集程度以及多期岩浆-热液活动叠加成矿多因素耦合的产物。岩浆体量、岩浆氧逸度和岩浆水含量是基础,流体聚集程度是关键,要形成大型-超大型斑岩-矽卡岩型钼矿,还需要多期岩浆-热液活动的叠加成矿。研究提出,寻找斑岩-矽卡岩型钼矿,在关注岩体地球化学属性的同时,还应关注岩体的空间结构属性以及多期岩浆-热液活动叠加成矿特征的识别。

关键词：斑岩-矽卡岩型钼矿熔体钼含量岩浆体量流体聚集程度多期岩浆-热液活动