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Journal of Energy Chemistry 2020年第2期29卷 107-114页

作者： chao Wang Yanyu liu Jian Yuan Ping {2. Wei zhou Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology Faculty of ScienceDepartment of Applied PhysicsInstitute of Advanced Materials PhysicsTianjin UniversityTianjin 300072China School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China

Recently, two dimensional In Se attracts great attentions as potential hydrogen production ***, comprehensive investigations on the hydrogen evolution reaction activity of In Se monolayer with3 d transition metal doping and biaxial strain were performed based on the density functional *** metal dopants significantly increase the bonding strength between H and Se, and then adjust the hydrogen adsorption free energy to 0.02.e V by Zn doping. The enhanced hydrogen evolution reaction activity results from less electron occupying H 1 s-Se 4 pzanti-bonding states, which is well correlated with the pzband center level. Importantly, the universal scalling law was proposed to descript the evolution of hydrogen adsorption free energy including both doping and strain effects. Moreover, with appropriate band alignment, optical absorption, and carriers separation ability, Zn doped In Se monolayer is considered as a promising candidate of visible-light photocatalyst for hydrogen production.

关键词： InSe monolayer Visible light photocatalyst Strain engineering 3d transition metals doping Hydrogen evolution reaction

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水性环氧乳化沥青超薄磨耗层层间黏结性能

公路交通科技 2024年第8期41卷 66-77页

作者：刘曙光周铭钰戴勇吴超凡张恒龙湖南省通泰工程有限公司湖南长沙410018 湖南大学绿色先进土木工程材料及应用技术湖南省重点实验室湖南长沙410082 湖南交通职业技术学院湖南省道路与轨道交通绿色建造与数智运维工程技术研究中心湖南长沙410132 湖南大学重庆研究院重庆401121

为探究超薄磨耗层复合结构的层间黏结性能,采用先乳化后改性的方法制备水性环氧乳化沥青作为黏结层材料,以AC-13级配混合料模拟原始路面;选择AC-10,SMA-10,UWM-10这3种超薄磨耗层,通过直接剪切试验确定了各类型复合试件的荷载-位移拟合... 详细信息

为探究超薄磨耗层复合结构的层间黏结性能,采用先乳化后改性的方法制备水性环氧乳化沥青作为黏结层材料,以AC-13级配混合料模拟原始路面;选择AC-10,SMA-10,UWM-10这3种超薄磨耗层,通过直接剪切试验确定了各类型复合试件的荷载-位移拟合曲线,得到了剪切强度、峰值位移、剪切刚度和层间黏结能等性能指标,研究洒布量、试验温度、黏结剂类型、超薄磨耗层级配等因素对层间黏结性能的影响规律。结果表明:超薄磨耗层AC-10,SMA-10,UWM-10铺装的黏结剂推荐洒布量分别为0.9,1.2.0.9 kg/m^(2.,加入水性环氧树脂对最佳洒布量的影响不大;环境温度对复合试件的层间力学性能有显著影响,随着温度升高,复合试件的剪切强度、剪切刚度、层间黏结能均减少,降幅达65%~90%;水性环氧乳化沥青的黏结性能显著优于空白样,改性黏结层的平均剪切强度、剪切刚度、层间黏结能分别为空白样的2.5,2.1,2.4倍,而在较高温度下,这些指标分别为空白样的3.3,2.5,3.5倍,水性环氧树脂的加入显著提升了黏结层的高温稳定性,使得热塑性乳化沥青向热固性方向发展;在3种超薄磨耗层中,SMA-10和UWM-10表现出更优异的黏结性能,而AC-10在路面温度达到35℃后的黏结性能会急剧衰退。

关键词：道路工程改性沥青混合料直接剪切试验黏结性能水性环氧树脂

Comparison of benzothiazole-based dyes for sensitive DNA detection

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Chinese Chemical Letters 2020年第11期31卷 2950-2954页

作者： Yanying Wang Ronghui zhou Wenxue liu {2. liu Peng wu College of Chemistry Sichuan UniversityChengdu 610064China Stare Key Laboratory of Oral Diseases West China Hospital of StomatologySichuan UniversityChengdu 610041China State Key Laboratory of Hydraulics a n d Mountain River Engineering College of Water Resource&1 HydropowerSichuan UniversityChengdu 610065China

For efficient and quantitative DNA detection,fluorescence staining is the most often explored approach,which relies on non-covalent binding of dyes with double stranded DNA(dsDNA).Ethidium bromide(EB)is the most classic DNA stain,but suffers from its high carcinogenicity.A series of less toxic alternatives were developed,many of which contain the core structure of the benzothiazole ***,the relationship between the structure and the DNA detection performance was not ***,five benzothiazole dyes,namely thiazole orange,SYBR Green I,Pico Green,SYBR Safe,and thioflavine-T,were compared for DNA detection through direct fluorescence and gel electrophoresis,with particular focus on the structure-performance *** turned out that SYBR Green I is currently the best choice for DNA *** results in this work may be useful for future DNA-staining dye developments.

关键词： DNA quantitative detection Benzothiazole SYBR Green I Gel electrophoresis

Magnetic proximity effect in the two-dimensional ε-Fe_(2.O_(3)/NbSe_(2.heterojunction

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Chinese Physics B 2024年第2期33卷 492-497页

作者：车冰玉胡国静朱超郭辉吕森浩刘轩冶吴康赵振潘禄禄祝轲齐琦韩烨超林晓李子安申承民鲍丽宏刘政周家东杨海涛高鸿钧 Beijing National Center for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China School of Materials Science and Engineering Nanyang Technological UniversitySingapore School of Physical Science and Technology Guangxi UniversityGuangxi 530004China School of Physics Beijing Institute of TechnologyBeijing 100081China

Two-dimensional(2.)magnet/superconductor heterostructures can promote the design of artificial materials for exploring 2. physics and device applications by exotic proximity ***,plagued by the low Curie temperature and instability in air,it is hard to realize practical applications for the reported layered magnetic materials at *** this paper,we developed a space-confined chemical vapor deposition method to synthesize ultrathin air-stable ε-Fe_(2.O_(3) nanosheets with Curie temperature above 350 *** ε-Fe_(2.O_(3)/NbSe_(2. heterojunction was constructed to study the magnetic proximity effect on the superconductivity of the NbSe_(2. *** electrical transport results show that the subtle proximity effect can modulate the interfacial spin–orbit interaction while undegrading the superconducting critical *** work paves the way to construct 2. heterojunctions with ultrathin nonlayered materials and layered van der Waals(vdW)materials for exploring new physical phenomena.

关键词： two-dimensional heterojunctions magnetic proximity effect non-layered magnetic nanosheet spin-orbit interaction

Hydrogen-bonded organic framework for red light-mediated photocatalysis

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Nano Research 2023年第7期16卷 8809-8816页

作者： Haofei Zhao Ziwen zhou Xuenan Feng chao {2. Hui wu Wei zhou Hailong Wang Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Center for Neutron Research National Institute of Standards and TechnologyGaithersburgMaryland 20899-6102USA College of Chemistry and Materials Science Hebei UniversityBaoding 071002China

The development of heterogeneous molecule-based catalysts for red light-mediated photocatalysis is still challenging due to the improper light absorption for most materials and the photoactivity deactivation for solid ***,red light photocatalysis with a hydrogen-bonded organic framework(HOF)is *** HOF,named HOF-66,is formed from the self-assembly of guanine-decorated naphthalenediimide(NDI)molecule through hydrogen-bonded guanine-quadruplex nodes,showing square grid supramolecular layers confirmed by powder X-ray diffraction *** contrast to unsubstituted NDI HOF,introduction of ethylamino groups to NDI core in HOF-66 tunes strong electronic maximum absorption peak to 619 nm,allowing red light photocatalysis of singlet oxygen evolution proved by 1,3-diphenylisobenzofuran degradation and electron spin resonance ***,under the same conditions,the sulfide oxidation rate in the presence of HOF-66 was 2. times higher compared to its unsubstituted *** work integrates the molecular design and aggregation effect towards the application of HOFs,opening a new gate for red light photocatalysts.

关键词： hydrogen-bonded organic framework red light photocatalysis reactive oxygen species degradation of thioethers

Frequency Control at the Power Sending Side for HVDC Asynchronous Interconnections Between Yunnan Power Grid and the Rest of CSG

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CSEE Journal of Power and Energy Systems 2021年第1期7卷 105-113页

作者： Hong Rao Wei wu Tian Mao Baorong zhou {2. Hong Yongjun liu Xiaoshan wu the Electric Power Research Institute of China Southern Power Grid(SEPRI CSG)Guangzhou 510080China

For a large-scale high voltage direct current (HVDC)asynchronous interconnected power grid, the frequency issue atthe power sending side under DC faults is a crucial *** solve this problem, based on rotor motion equations, theeffect of unbalanced power on the system frequency under DCfaults is analyzed. The characteristics and dynamic developmentprocess of frequencies after the injection of disturbances areanalyzed. In addition, the actions and coordinated strategies ofvarious frequency control measures are also investigated. Basedon the testing projects of an asynchronous interconnection in theChina Southern Power Grid (CSG), the frequency features arestudied according to the measured PMU data. The outcome showsthat the frequency problem of the Yunnan Power Grid after anasynchronous interconnection can be solved and controlled. Italso shows that the frequency limit control (FLC) is importantfor the frequency regulation of large scale HVDC asynchronousinterconnected DC power grids. As demonstrated, DC FLC caneffectively suppress the deviation of the transient ***, reasonable frequency regulation parameters shouldbe set and other area frequency control measures should becoordinated to maintain the frequency stability of the system.

关键词： Asynchronous interconnected power grid DC overload capacity DC frequency limit control frequency stability PMU data

高海拔地质复杂地区喷射混凝土超早强材料应用研究

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施工技术（中英文） 2024年第4期53卷 40-46页

作者：徐锋曾超刘明周晋筑吴雄中建铁路投资建设集团有限公司北京102600 中建西部建设建材科学研究院有限公司四川成都610218

将纳米早强功能材料、增强型无碱速凝剂及混凝土稳态保塑剂进行有机结合,开发了高海拔地质复杂地区喷射混凝土超早强材料,以解决高海拔地质复杂地区喷射混凝土的超早强性能与工作性能保持、长龄期强度增长的矛盾。研究水胶比、减水剂掺... 详细信息

将纳米早强功能材料、增强型无碱速凝剂及混凝土稳态保塑剂进行有机结合,开发了高海拔地质复杂地区喷射混凝土超早强材料,以解决高海拔地质复杂地区喷射混凝土的超早强性能与工作性能保持、长龄期强度增长的矛盾。研究水胶比、减水剂掺量、纳米早强功能材料、增强型无碱速凝剂及混凝土稳态保塑剂对喷射混凝土的工作性能及抗压强度的影响,通过水化热和水化产物形貌测试探究了其超早强性能和工作性能保持的作用机制,并在某工程进行了工程应用评价。结果表明,8h, 2.h和2.d的抗压强度分别达到11.9,2..6,53.3MPa。

关键词：混凝土超早强材料速凝剂抗压强度应用研究

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喷吹工艺参数对高炉渣粒化成珠效果的影响

钢铁 2024年第7期59卷 159-168页

作者：孙瑞靖康月丁洪玲邢宏伟刘超周君吴礼忠邵宸华北理工大学冶金与能源学院河北唐山063210 华北理工大学图书馆河北唐山063210 华北理工大学理学院河北唐山063210 曹妃甸职业技术学院河北唐山063210 江苏省响水中等专业学校江苏盐城224638

传统的高炉渣处理方法为水淬法,但水淬法存在很多弊端,如大量余热资源未有效回收利用、水资源大量浪费、冷却过程中产生H2.和SO2.污染物污染环境,为了克服该方法带来的弊端,采用干式粒化法对高炉熔渣进行破碎粒化,在传统气淬喷吹工艺... 详细信息

传统的高炉渣处理方法为水淬法,但水淬法存在很多弊端,如大量余热资源未有效回收利用、水资源大量浪费、冷却过程中产生H2.和SO2.污染物污染环境,为了克服该方法带来的弊端,采用干式粒化法对高炉熔渣进行破碎粒化,在传统气淬喷吹工艺基础上加入水雾化,对高炉熔渣进行强化破碎,从而显著提高破碎粒化率,提升高炉渣利用附加值。通过研究不同喷吹工艺参数(不同气淬压力、不同喷嘴结构、不同气水比)对高炉熔渣破碎粒化效果(粒径分布、成珠率、球形度)的影响,获得最佳粒化工艺参数。研究结果表明,不同喷吹工艺参数(不同气淬压力、不同喷嘴结构、不同气水比)下渣珠粒径均基本呈正态分布,粒径大小基本集中在0.40~2.36 mm。同时,增大气淬压力和选用气水混合的9孔喷嘴以及增加喷水量均能够有效强化高炉渣破碎,提升成珠率,成珠率最高为85.3%。但是随着压力的增加,成珠率并不是一味增加,超过0.30 MPa后,成珠率基本保持不变;压力越大,得到的小粒径渣珠越多,而且透明度高,形状也规则;选用直接喷吹气体的拉瓦尔喷嘴和先喷气再与水混合的T型喷嘴,粒化效果均较差;在喷水量小于喷气量时,随着喷水量的增加成珠率呈逐渐增加的趋势,同时渣珠球形度较好,形状较规则;当喷水量超过喷气量后,成珠率有所减少,但减少的趋势较缓,这为高炉渣高附加值利用提供了理论参考。

关键词：高炉渣干式粒化粒径分布成珠率喷吹

Non-destructive thermal ageing evaluation of P(VDF-HFP)film based on broadband dielectric response

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High Voltage 2022年第6期7卷 1123-1129页

作者： Qian Wang chao wu Yanfeng Gao Shuming {2. Shuqi {2. zhou Zuo Xidong Liang Department of Electrical Engineering State Key Lab of Power SystemTsinghua UniversityBeijingChina Electrical Insulation Research Center Institute of Materials ScienceUniversity of ConnecticutStorrsConnecticutUSA State Grid Jibei Electric Power Co.Ltd.Research Institute North China Electric Power Research Institute Co.Ltd.BeijingChina

Capacitors and sensors based on polymer dielectric materials are key components in electrical systems and electronic *** the temperature rise during operation,an effective evaluation method for the thermal ageing of polymer matrix is urgently needed.P(VDF-HFP)film with a thickness of 2.μm is manufactured by solution casting and a thermal ageing experiment up to 1000 h is *** responses of wide ranges of temperatures and frequencies are measured for samples with different ageing *** universal relaxation law and Dissado–Hill dielectric response model are applied to further investigate the *** characteristics of individual processes are obtained,which demonstrate that the main chain relaxation following the Vogel−Fulcher−Tammann equation and side chain relaxation following the Arrhenius equation both remain unchanged after thermal ***,the activation energies of those two processes change significantly during the process and show different variation *** activation energy of the side chain relaxation gets larger monotonically due to the influence of annealing and the breaking of crystalline *** a result,a non-destructive evaluation method for the thermal ageing of P(VDF-HFP)is proposed accordingly.

关键词： casting thermal relaxation

Quantitative characterization of shale gas reservoir properties based on BiLSTM with attention mechanism

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Geoscience Frontiers 2023年第4期14卷 144-159页

作者： Xingye liu Huailai zhou Kangkang Guo {2. Li Shaohuan Zu Lihui wu Key Laboratory of Earth Exploration and Information Technology of Ministry of Education College of GeophysicsChengdu University of TechnologyChengdu 610059China SINOPEC Petroleum Exploration and Production Research Institute Beijing 102206China Beijing Precise Energy Technology Co Ltd Beijing 100085China

Evaluating the potential of shale gas reservoirs is inseparable from reservoir properties *** characterization of total organic carbon,porosity and permeability is necessary to understand shale gas *** data can help to estimate these parameters in the area *** develop an improved deep learning method to achieve shale gas reservoir properties *** rela-tionship between elastic attributes and reservoir properties is built up by training a deep bidirectional long short-term memory network,which is suitable for time/depth sequence prediction,on the logging and core *** some commonly used technologies,such as layer normalization and dropout,we also introduce attention mechanism to further enhance the prediction ***,we propose to carry on the normal scores transform on the input features,which aims to make the relationship between inputs and targets clear and easy to *** the training process,we construct quantile loss function,then use Adam algorithm to optimize the *** only the characterization results,but also the confidence interval can be output that is meaningful for uncertainty *** well exper-iment indicates that the method is promising for reducing prediction errors when training samples are *** analyzing in wells,the established model is acted upon seismic inverted elastic attri-butes to characterize shale gas reservoirs in the whole studied *** estimation results coincide well with the actual development results,showing the feasibility of the novel method on the characterization for shale gas reservoirs.

关键词： Shale gas Reservoir properties prediction Deep learning TOC Permeability