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Insight into vertical piezoelectric characteristics regulated thermal transport in van der Waals two-dimensional materials

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Rare Metals 2024年第2期43卷 770-779页

作者： Dong-Hai Wei e zhou Jin-Yuan Xu Hui-Min Wang Chen Shen Hong-Bin Zhang Zhen-Zhen Qin Guang-Zhao Qin State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha410082China Hunan Key Laboratory for Micro-Nano energy Materials and Device and School of Physics and Optoelectronics Xiangtan UniversityXiangtan411105China Institute of Materials Science Technical University of DarmstadtAlarich-Weiss-Str.264287DarmstadtGermany School of Physics and Microelectronics Zhengzhou UniversityZhengzhou450001China

The urgent demand of extreme(ultra-high/low)thermal conductivity materials is triggered by the high-power device,where exploring the theories and mechanisms of regulating thermal transport properties plays a key ***,we elaborately investigate the effect of vertical(out-of-plane)piezoelectric characteristics on thermal transport,which is historically *** different stacking-order(AA and AB)bilayer boron nitride(Bi-BN)in two-dimensional(2D)materials are selected as study *** performing state-of-the-art first-principles calculations,it is found that the polarization charge along the out-of-plane orientation ascends significantly with the increasing piezoelectric response in AB stacked Bi-BN(Bi-BN-AB)followed by the enhanced interlayer B–N atomic ***,the amplitude of phonon anharmonicity in Bi-BN-AB increases larger than that in the AA stacked Bi-BN(Bi-BN-AA),resulting in the dramatic weakening of the thermal conductivity by 20.34%under 18%*** research reveals the significant role of the vertical(out-of-plane)piezoelectric characteristic in regulating thermal transport and provides new insight into accurately exploring the thermal transport performance of 2D van der Waals materials.

关键词： Thermal conductivity Piezoelectric effect 2D materials Bilayer BN Strain engineering

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《史记·扁鹊传》所见“扁鹊”事迹及“春秋笔法”论析

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史学月刊 2024年第5期 99-112页

作者：周峨上海中医药大学科技人文研究院上海201203

《史记·扁鹊传》所载有三种“扁鹊”:“秦越人”之扁鹊、“良医公名”之扁鹊、“借医喻政”之扁鹊。三则医案,所涉及者不皆为秦越人:“诊断赵简子”当出自后世之说,其中提及的“扁鹊”,乃良医之泛称;“救治虢太子”者,方为秦越人,其时... 详细信息

《史记·扁鹊传》所载有三种“扁鹊”:“秦越人”之扁鹊、“良医公名”之扁鹊、“借医喻政”之扁鹊。三则医案,所涉及者不皆为秦越人:“诊断赵简子”当出自后世之说,其中提及的“扁鹊”,乃良医之泛称;“救治虢太子”者,方为秦越人,其时在虢国未灭之前;“望诊齐桓侯”一则,病主当为“蔡桓侯”,其中提及的“扁鹊”存在是秦越人的可能。三则医案之记叙,非依据事件发生时间之先后,而是依据其背后之事“义”:抚脉知病、起死回生、论病及国,渐次深入。文中“六不治”之说来自司马迁对“借医喻政”之扁鹊故事的归纳总结,篇末行迹遍布各地、治病随俗为变的“扁鹊”即此一种“扁鹊”。司马迁将三种“扁鹊”合而为一,以“疑以传疑”“推见至隐”的笔法写作此传,乃欲寄寓其治国亦如诊疾、当有见微知著之智的微旨。

关键词：扁鹊传秦越人赵简子虢国齐桓侯

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HIeRARCHICAL STOCHASTIC FINITe eLeMeNT MeTHOD FOR STRUCTURAL ANALYSIS

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Acta Mechanica Solida Sinica 2013年第2期26卷 189-196页

作者： Lufeng Yang Yue'e zhou Jingjing zhou Meilan Wang The Key Lab of engineering Disaster Prevention and Structural Safety of China Ministry of education School of Civil Engineering and ArchitectureGuangxi University

In this paper, the hierarchical approach is adopted for series representation of the stochastic nodal displacement vector using the hierarchical basis vectors, while the Karhunen- Loire series expansion technique is employed to discretize the random field into a set of random variables. A set of hierarchical basis vectors are defined to approximate the stochastic response quantities. The stochastic variational principle instead of the projection scheme is adopted to develop a hierarchical stochastic finite element method （HSFeM） for stochastic structures under stochastic loads. Simplified expressions of coefficients of governing equations and the first two statistical moments of the response quantities in the schemes of the HSFeM are developed, so that the time consumed for computation can be greatly reduced. Investigation in this paper suggests that the HSFeM yields a series of stiffness equations with similar dimensionality as the perturbation stochastic finite element method （PSFeM）. Two examples are presented for numerical study on the performance of the HSFeM in elastic structural problems with stochastic Young＇s Modulus and external loads. Results show that the proposed method can achieve higher accuracy than the PSFeM for cases with large coefficients of variation, and yield results agreeing well with those obtained by the Monte Carlo simulation （MCS）.

关键词： hierarchical stochastic finite element method random field variational principle,Karhunen-Loeve series

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前科时效:内涵意蕴、生成逻辑及构建路径

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常州大学学报（社会科学版） 2024年第3期25卷 30-39页

作者：周峨春郭子麟青岛大学法学院

前科时效是指国家保留受过刑事处罚的人的犯罪记录使其处于不利状态的期限。前科时效制度生成具有充分的逻辑基础,不仅契合重罪到轻罪的时代变换,而且可以平衡犯罪人权利与公共利益并降低刑满释放人员再犯的可能性。构建前科时效制度应... 详细信息

前科时效是指国家保留受过刑事处罚的人的犯罪记录使其处于不利状态的期限。前科时效制度生成具有充分的逻辑基础,不仅契合重罪到轻罪的时代变换,而且可以平衡犯罪人权利与公共利益并降低刑满释放人员再犯的可能性。构建前科时效制度应与刑法现有制度相衔接,适用范围限于累犯、毒品再犯以外以及禁止适用假释的严重暴力犯罪外的其他犯罪行为,适用条件为前科存续期间没有再犯罪行为,适用期限根据微罪、轻罪、重罪三个档次进行划分,分别对应不同的前科存续期。

关键词：前科前科报告前科消灭前科时效

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国家治理现代化下的基层自治组织犯罪治理的职能演进

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山东行政学院学报 2024年第2期 106-113页

作者：周峨春郭子麟青岛大学法学院山东青岛266071

在国家治理现代化的背景下,犯罪治理应坚持以人民为中心的治理立场、多元主体参与的治理格局、基层化解矛盾的治理场域。在犯罪治理变革中,基层自治组织的充分参与,既是适应犯罪现象内部结构变化的趋势,亦是契合“国家·社会”双本位的... 详细信息

在国家治理现代化的背景下,犯罪治理应坚持以人民为中心的治理立场、多元主体参与的治理格局、基层化解矛盾的治理场域。在犯罪治理变革中,基层自治组织的充分参与,既是适应犯罪现象内部结构变化的趋势,亦是契合“国家·社会”双本位的犯罪治理模式,还是基于基础自治组织先天优势的考量。因此,可以从三个方向演进基层自治组织的犯罪治理职能,即强化犯罪预防职能、提高在刑事和解中的地位、搭建社区矫正的协调平台。

关键词：国家治理现代化基层自组织基层治理犯罪治理

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Comparison on the leaching kinetics of chalcocite and pyrite with or without bacteria

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Rare Metals 2010年第6期29卷 552-556页

作者： RUAN Renman zhou e LIU Xingyu WU Biao zhou Guiying WeN Jiankang School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China Zijin Mining Group Co.Ltd. Shanghang 364200China Institute of Process engineering Chinese Academy of SciencesBeijing 100090China National engineering Laboratory of Biohydrometallurgy General Research Institute for Nonferrous MetalsBeijing 100088China

The acid leaching,ferric leaching,and bioleaching of chalcocite and pyrite minerals were conducted in two sets of 3L stirred *** dissolution rates of copper and iron were correlated with leaching *** the acid leaching process,the dissolution rate of chalcocite was around 40wt.% while that of pyrite was less than 4%.In the ferric leaching process with high ferric concentration,only 10 wt.% of iron in pyrite was leached out at the same retention time though the copper recovery over 60 wt.% in *** the bioleaching process,the chalcocite leaching rate was highly increased,nearly 90 wt.% of copper was leached out,and the iron dissolution of pyrite exceeded 70 wt.%.For the two minerals,the bioleaching shows the highest leaching rate compared with the acid leaching or ferric *** uncontrolled bioleaching process,pyrite could be dissolved *** experimental data were fitted to the shrinking core and particle *** results show that in all the leaching tests,the chalcocite leaching was mainly controlled by diffusion,while for the pyrite leaching,chemical reaction is the main rate-determining step.

关键词： chalcocite pyrite kinetic model bioleaching

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effect of an Alien Species Spartina alterniflora Loisel on Biogeochemical Processes of Intertidal ecosystem in the Jiangsu Coastal Region,China

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Pedosphere 2008年第1期18卷 77-85页

作者： zhou Hong-Xia LIU Jin-e zhou Jun QIN Pei Life Science School Nanjing University Nanjing 210093 （China） Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 （China）

Spartina alterniflora Loisel, a species vegetating in intertidal flats along the eastern coast of the United States, was introduced in China almost 30 years ago and has become an urgent topic due to its invasiveness in the coastal zone of China. The impacts of this alien species S. alterniflora on intertidal ecosystem processes in the Jiangsu coastland were investigated by comparing the sediment nutrient availability and trace element concentration characteristics in a mud flat and those of a four-year old Spartina salt marsh that had earlier been a mudflat. At each study site, fifteen plots were sampled in different seasons to determine the sediment characteristics along the tidal flats. The results suggested that Spartina salt marsh sediments had significantly higher total N, available P, and water content, but lower pH and bulk density than mudflat sediments. Sediment salinity, water content, total N, organic C, and available P decreased along a seaward gradient in the Spartina salt marsh and increased with vegetation biomass. Furthermore, the concentrations of trace elements and some metal elements in the sediment were higher under Spartina although these increases were not significant. Also, in the Spartina marsh, some heavy metals were concentrated in the surface layer of the sediment. The Spartina salt marsh in this study was only four years old; therefore, it is suggested that further study of this allen species on a longer time frame in the Jiangsu coastland should be carried out.

关键词： alien species biogeochemical processes intertidal ecosystem salt marsh Spartina alterniflora Loisel

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Human extracellular matrix(eCM)-like collagen and its bioactivity

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Regenerative Biomaterials 2024年第4期3卷 14-26页

作者： Hui zhou Wenwei Li Lixin Pan Tianci Zhu Teng zhou e.Xiao Qiang Wei State Key Laboratory of Polymer Materials and engineering College of Polymer Science and EngineeringSichuan UniversityChengdu 610065China Hunan Maybio Bio-Pharmaceutical Co. LtdChangsha 410000China

Collagen,the most abundant structural protein in the human extracellular matrix(eCM),provides essential support for tissues and guides tissue *** its widespread use in tissue engineering,there remains uncertainty regarding the optimal selection of collagen ***-derived sources pose challenges such as immunogenicity,while the recombinant system is hindered by diminished *** this study,we hypothesized that human eCM-like collagen(hCol)could offer an alternative for tissue *** this study,a facile platform was provided for generating hCol derived from mesenchymal stem cells with a hierarchical structure and biochemical properties resembling native *** results further demonstrated that hCol could facilitate basal biological behaviors of human adipose-derived stem cells,including viability,proliferation,migration and adipocyte-like ***,it could promote cutaneous wound *** to its high similarity to native collagen and good bioactivity,hCol holds promise as a prospective candidate for in vitro and in vivo applications in tissue engineering.

关键词： extracellular matrix native-like collagen cell-derived matrix hierarchical structure

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雅砻江锦屏减水河段产漂流性卵鱼类早期资源及变化

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水生态学杂志 2024年第5期45卷 97-105页

作者：汪鄂洲刘健华徐丹黄敏张棋杨钟董微微曾昌邵科水利部中国科学院水工程生态研究所水利部水工程生态效应与生态修复重点实验室湖北武汉430079 雅砻江流域水电开发有限公司四川成都610051 武汉市水产技术推广指导中心湖北武汉430014

分析雅砻江两河口和杨房沟水电站投产运行初期锦屏减水河段产漂流性卵鱼类早期资源及变化,为雅砻江中下游梯级水电开发的环境影响研究提供数据支撑。2022年5-7月在雅砻江干流锦屏二级减水河段凉山州冕宁县里庄断面设置采样点利用半圆弶... 详细信息

分析雅砻江两河口和杨房沟水电站投产运行初期锦屏减水河段产漂流性卵鱼类早期资源及变化,为雅砻江中下游梯级水电开发的环境影响研究提供数据支撑。2022年5-7月在雅砻江干流锦屏二级减水河段凉山州冕宁县里庄断面设置采样点利用半圆弶网采集鱼类卵苗,同时测量网口流速、水温等环境因子,并结合径流量数据推断产卵场位置及规模。结果采集到鱼类卵苗12种,其中产漂流性卵鱼类4种,分别是中华金沙鳅、犁头鳅、长薄鳅和中华沙鳅。估算调查期间锦屏减水河段产漂流性卵径流量约为1019.07万粒,在5月下旬水温达到16℃以上开始繁殖,7月中上旬水温17℃以上达到繁殖高峰,较大规模的产卵场主要分布在九龙河口以下和爱、南河-青纳和里庄等3个江段。与2013年及2019-2020年调查相比,锦屏减水河段均以中华金沙鳅和犁头鳅为主要产卵种类,鱼卵密度低于2013年,高于2019-2020年,近年来繁殖规模总体呈现稳中有升的趋势,繁殖高峰期有所推迟。由于流水环境的存在,锦屏减水河段保留有雅砻江下游规模最大的产漂流性卵鱼类产卵场,建议继续加强河段水温观测、评估分层取水效果、优化生态调度方案以保护雅砻江下游鱼类资源。

关键词：漂流性卵早期资源梯级开发减水河段累积影响雅砻江

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Composite Recommendation of Artworks in e-Commerce Based on User Keyword-Driven Correlation Graph Search

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Tsinghua Science and Technology 2024年第1期29卷 174-184页

作者： Jingyun Zhang Wenjie Zhu Byoung Jin Ahn Yongsheng zhou School of Design Dongseo UniversityBusan 47011Republic of Korea Institute of Art and Design Jiangsu University of TechnologyChangzhou 213001China Jinling Wenyun Art Design Co. Ltd.Zhenjiang 212000China Institute of Art and Design Krirk UniversityBangkok 10220Thailand Shandong Provincial University Laboratory for Protected Horticulture Weifang University of Science and TechnologyShouguang 262700China

With the ever-increasing diversification of people’s interests and preferences,artwork has become one of the most popular commodities or investment goods in e-commerce,and it increasingly attracts the attention of the ***,many real-world or virtual artworks can be found in e-commerce,and finding a means to recommend them to appropriate users has become a significant task to alleviate the heavy burden on artwork selection decisions by *** research mainly studies the problem of single-artwork recommendation while neglecting the more practical but more complex composite recommendation of artworks in e-commerce,which considerably influences the quality of experience of potential users,especially when they need to select a set of artworks instead of a single *** by this limitation,we put forward a novel composite recommendation approach to artworks by a user keyword-driven correlation graph search named ART_(com-rec).Through ART_(com-rec),the recommender system can output a set of artworks(e.g.,an artwork composite solution)in e-commerce by considering the keywords typed by a user to indicate his or her personalized ***,we validate the feasibility of the ART_(com-rec) approach by a set of simulated experiments on a real-world PW dataset.

关键词： composite recommendation artwork user keywords e-commerce correlation graph search

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