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Journal of Iron and Steel Research International 2018年第10期25卷 1068-1077页

作者： Xin GUO Pei-qing La Heng Li yu-peng wei Xue-feng Lu State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal Lanzhou University of Technology Lanzhou 730050 Gansu China Key Laboratory of Nonferrous Metal Alloys and Processing Ministry of Education Lanzhou University of Technology Lanzhou 730050 Gansu China

Microstructure evolution and mechanical properties of 316L austenitic stainless steel with aluminum addition by warm rolling at 550 ℃ were investigated. It is found that sample is composed of an ashen austenite matrix, a gray black ferrite phase and a small number of NiCx. The average grain sizes are 21.62, 19.66 and 19.49 μm for samples with the rolling deformation of 30%, 50% and 70%, respectively. The yield strength and tensile strength of samples with solid solution time of 30 min and deformation of 70% are higher. The fracture modes are similar and belong to toughness fracture. The fracture surfaces of the samples are composed of relatively large equal-axis ductile dimples （5-15 μm） and fine scattered ones around the dimples （〈 5 μm）. As the rolling deformation increases, the quantity of subgrain boundary increases and the 〈 101 〉 orientation is more prominent. {001 } 〈 110 〉 rotation-cube textures are present in ferrite phase of samples and weak Goss texture is formed in austenite pole images.

关键词： AISI 316L austenitic stainless steel Warm rolling Tensile property Fracture mechanism Deformationtexture

High Hydrostatic Pressure Exacerbates Bladder Fibrosis through Activating Piezo1

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Current Medical Science 2024年第4期44卷 718-725页

作者： Bo-lang DENG Dong-xu LIN Zhi-peng LI Kang LI peng-yu wei Chang-cheng LUO Meng-yang ZHANG Quan ZHOU Zheng-long YANG Zhong CHEN Department and Institute of Urology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Rehabilitation Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China

Objective Bladder outlet obstruction(BOO)results in significant fibrosis in the chronic stage and elevated bladder ***1 is a type of mechanosensitive(MS)channel that directly responds to mechanical *** identify new targets for intervention in the treatment of BOO-induced fibrosis,this study investigated the impact of high hydrostatic pressure(HHP)on Piezo1 activity and the progression of bladder *** Immunofluorescence staining was conducted to assess the protein abundance of Piezo1 in fibroblasts from obstructed rat *** fibroblasts were cultured under normal atmospheric conditions(0 cmH_(2)O)or exposed to HHP(50 cmH_(2)O or 100 cmH_(2)O).Agonists or inhibitors of Piezo1,YAP1,and ROCK1 were used to determine the underlying *** The Piezo1 protein levels in fibroblasts from the obstructed bladder exhibited an elevation compared to the control *** significantly promoted the expression of various pro-fibrotic factors and induced proliferation of ***,the protein expression levels of Piezo1,YAP1,ROCK1 were elevated,and calcium influx was increased as the pressure *** effects were attenuated by the Piezo1 inhibitor *** Piezo1 activator Yoda1 induced the expression of pro-fibrotic factors and the proliferation of fibroblasts,and elevated the protein levels of YAP1 and ROCK1 under normal atmospheric conditions in ***,these effects could be partially inhibited by YAP1 or ROCK inhibitors.

关键词： high hydrostatic pressure bladder outlet obstruction fibrosis Piezo1

Research on Stock Price Prediction Method Based on the GAN-LSTM-Attention Model

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Computers, Materials & Continua 2025年第1期82卷 609-625页

作者： peng Li Yanrui wei Lili Yin College of Computer Science and Technology Harbin University of Science and TechnologyHarbin150006China

Stock price prediction is a typical complex time series prediction problem characterized by dynamics,nonlinearity,and *** paper introduces a generative adversarial network model that incorporates an attention mechanism(GAN-LSTM-Attention)to improve the accuracy of stock price ***,the generator of this model combines the Long and Short-Term Memory Network(LSTM),the Attention Mechanism and,the Fully-Connected Layer,focusing on generating the predicted stock *** discriminator combines the Convolutional Neural Network(CNN)and the Fully-Connected Layer to discriminate between real stock prices and generated stock ***,to evaluate the practical application ability and generalization ability of the GAN-LSTM-Attention model,four representative stocks in the United States of America(USA)stock market,namely,Standard&Poor’s 500 Index stock,Apple Incorporatedstock,AdvancedMicroDevices Incorporatedstock,and Google Incorporated stock were selected for prediction experiments,and the prediction performance was comprehensively evaluated by using the three evaluation metrics,namely,mean absolute error(MAE),root mean square error(RMSE),and coefficient of determination(R2).Finally,the specific effects of the attention mechanism,convolutional layer,and fully-connected layer on the prediction performance of the model are systematically analyzed through ablation *** results of experiment show that the GAN-LSTM-Attention model exhibits excellent performance and robustness in stock price prediction.

关键词： Stock price prediction generative adversarial network attention mechanism time-series prediction

Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： peng Li Meifeng Cai Shengjun Miao yuan Li yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang Feng Gao yu-Gui peng peng Wu Zong-Lin Li Xue-Feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

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论我国食品安全犯罪刑法规制的缺陷和完善

内蒙古社会科学 2009年第4期30卷 23-26页

作者：彭玉伟北京师范大学刑事法律科学研究院北京100875

食品安全是各国政府和消费者共同关注的重大社会问题。食品安全关系到人的生命和健康,关乎国家经济发展和社会稳定。目前,我国食品安全问题凸显,违法犯罪频发,刑法保护不力。刑法学界对食品安全犯罪问题缺乏应有的关注。国外食品安全犯... 详细信息

食品安全是各国政府和消费者共同关注的重大社会问题。食品安全关系到人的生命和健康,关乎国家经济发展和社会稳定。目前,我国食品安全问题凸显,违法犯罪频发,刑法保护不力。刑法学界对食品安全犯罪问题缺乏应有的关注。国外食品安全犯罪刑事法网严密,科刑趋重。我国现行刑法对食品安全犯罪的规制存在诸多缺陷,因此,应从犯罪分类、罪名、罪状、法定刑四个方面予以全面完善。

关键词：食品安全食品安全犯罪刑法规制缺陷完善

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基于统计量特征的数据库指纹方法

软件学报 2022年第9期33卷 3422-3436页

作者：方焱志黄煜坤彭煜玮武汉大学计算机学院湖北武汉430072

在数据库中嵌入数字水印作为指纹是一种重要的数据库版权保护与身份溯源技术,它对推动数据的共享融合起到了重要的保障作用.针对现有数据库指纹方法在数据普适性上的不足开展研究,提出了一种基于统计量特征的数据库指纹方法.首先,采用... 详细信息

在数据库中嵌入数字水印作为指纹是一种重要的数据库版权保护与身份溯源技术,它对推动数据的共享融合起到了重要的保障作用.针对现有数据库指纹方法在数据普适性上的不足开展研究,提出了一种基于统计量特征的数据库指纹方法.首先,采用了迭代哈希的数据划分方法将数据划分为多个子集;然后,通过最优化算法将过滤极值后的数据子集特征最大/最小化,根据基于最小错误率的贝叶斯决策计算得到最优阈值作为指纹信息.通过理论分析验证了该方法的可行性与有效性,同时也通过真实数据集上的实验结果证明了所提算法在抗攻击能力和普适性上的优势.

关键词：数字水印数据库指纹统计量特征可用性约束鲁棒性水印

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动态真空条件下快速合成β-SiC的研究

功能材料 2008年第10期39卷 1700-1702页

作者：于伟鹏郑瑛郑勇魏可镁福建师范大学化学与材料学院福建福州350007 福州大学化肥催化剂国家工程研究中心福建福州350002

以淀粉(经85℃糊化)为碳源,正硅酸乙酯(TEOS)为硅源,通过溶胶-凝胶法制备了淀粉-SiO2混合凝胶,将混合干凝胶在动态真空条件下进行碳热还原制备碳化硅(SiC)。用TGA、XRD、SEM及N2低温物理吸附等手段对淀粉-SiO2混合凝胶和碳热还原产物进... 详细信息

以淀粉(经85℃糊化)为碳源,正硅酸乙酯(TEOS)为硅源,通过溶胶-凝胶法制备了淀粉-SiO2混合凝胶,将混合干凝胶在动态真空条件下进行碳热还原制备碳化硅(SiC)。用TGA、XRD、SEM及N2低温物理吸附等手段对淀粉-SiO2混合凝胶和碳热还原产物进行表征。结果表明,在950℃动态真空条件下即可合成出晶粒尺寸约为50nm,结晶度较高的β-SiC。

关键词：淀粉溶胶-凝胶碳热还原 β-SiC 真空

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大侦查体制改革及其实践介评

山东警察学院学报 2016年第5期28卷 19-26页

作者：彭玉伟中国人民公安大学侦查学院北京100038

大侦查体制改革是多重动因共同作用的结果。从当前各地公安机关大侦查体制改革的实践情况看,虽然改革方案不尽相同,大侦查格局有所差异,但总的来说可以分为压缩层级式和整合机构式两种模式。压缩层级式改革由于缺乏充分论证、理论基础... 详细信息

大侦查体制改革是多重动因共同作用的结果。从当前各地公安机关大侦查体制改革的实践情况看,虽然改革方案不尽相同,大侦查格局有所差异,但总的来说可以分为压缩层级式和整合机构式两种模式。压缩层级式改革由于缺乏充分论证、理论基础和法律依据,多以失败而告终。相比之下,整合机构式改革应当成为大侦查体制改革的优选路径。在推进整合机构式改革的同时,需要注意的问题主要包括纠正错误认知、整合技术资源、上下整体联动、明确事权划分、上下垂直管理、配套制度跟进。

关键词：侦查体制改革大侦查体制改革动因改革实践改革评价

Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni2P for lithium-sulfur batteries

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Journal of Energy Chemistry 2025年第1期100卷 760-769页

作者： Lin peng yu Bai Hang Li Meixiu Qu Zhenhua Wang Kening Sun Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical Engineering Beijing Institute of Technology

Lithium-sulfur （Li-S） batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni2P by concurrently introducing B-doped atoms and P vacancies in Ni2P （Vp-B-Ni2P）,thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni2P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides （LiPSs） as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of B-doped atoms and P vacancies in Ni2P selectively promotes Li2S dissolution and nucleation ***,the Li-S batteries with Vp-B-Ni2P-separators present outstanding rate ability of 777 m A h g-1at 5 C and high areal capacity of 8.03 mA h cm-2under E/S of 5μL mg-1and sulfur loading of 7.20 mg *** work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： Lithium sulfur batteries