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全面腐蚀控制 2024年第6期38卷 24-26页

作者：李金龙兖矿能源兖矿煤化工程有限公司山东济宁273500

文章具体分析压力管道应力腐蚀开裂机理和影响因素,具体从环境因素,介质因素,材料因素等方面展开论述,提出如何有效预防压力管道应力腐蚀开裂问题,希望为相关人员提供一定的参考。

关键词：压力管道应力腐蚀开裂影响因素

基于改进麻雀搜索算法的无信号交叉路口车辆调度优化

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计算机系统应用 2024年第3期33卷 233-244页

作者：李金龙刘伟山东科技大学计算机科学与工程学院青岛266590

本文将无信号交叉路口内部区域离散化为多个路权点,并将车辆右转弯与行人或非机动车发生碰撞造成交通事故时所占的路权点设为“故障点”,故障点有一个至多个,本文研究无信号交叉路口在发生车辆故障时的通行效率问题.选择麻雀搜索算法提... 详细信息

本文将无信号交叉路口内部区域离散化为多个路权点,并将车辆右转弯与行人或非机动车发生碰撞造成交通事故时所占的路权点设为“故障点”,故障点有一个至多个,本文研究无信号交叉路口在发生车辆故障时的通行效率问题.选择麻雀搜索算法提高车辆调度的通行效率,但是该算法存在前期易陷入局部最优值而后期寻优精度不高等问题,为解决此问题,引入自适应学习参数和等级反向学习的改进策略,提出基于自适应参数和等级反向学习的麻雀算法(ALSSA).选取13个基准测试函数以及Wilcoxon秩和检验P值验证ALSSA的有效性,结果表明,改进的麻雀搜索算法与其他算法相比,全局搜索能力、寻优精度等都有较大提升.最后,计算双向两车道、双向四车道、双向八车道不同车流量下的最优通行时间.

关键词：无信号交叉路口麻雀搜索算法自适应参数等级反向学习

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考虑压敏效应的低渗透油藏CO_(2)辅助重力驱合理配产方法

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科学技术与工程 2024年第22期24卷 9357-9364页

作者：张辉李忠诚李明义李金龙王昊胡彧田冷黄文奎中国石油吉林油田公司勘探开发研究院松原138000 中国石油大学(北京)石油工程学院北京102299 中国石油大学(北京)天然气地质与工程研究中心北京102299

高倾角低渗透油藏在进行水驱开发时,在油藏高部位存在大量剩余油,采收率较低,采用CO_(2)辅助重力驱,可以充分利用高倾角的地质特征,有效提高该类油藏的采出程度。但是由于CO_(2)对原油物性影响要远大于水对原油物性的影响,CO_(2)驱替过... 详细信息

高倾角低渗透油藏在进行水驱开发时,在油藏高部位存在大量剩余油,采收率较低,采用CO_(2)辅助重力驱,可以充分利用高倾角的地质特征,有效提高该类油藏的采出程度。但是由于CO_(2)对原油物性影响要远大于水对原油物性的影响,CO_(2)驱替过程中流体的渗流过程更加复杂,因此有必要对低渗透油藏CO_(2)重力驱合理配产优化进行研究。首先,依据油藏中任意一点压力与最小混相压力的关系,分别建立了考虑压敏效应的低渗透油藏CO_(2)重力驱混相和非混相模型;其次,运用Python对模型进行求解,同时分析了压敏系数、地层倾角、注采井距和注气速度对油藏配产的影响;最后,结合现有工作制度法和增产倍数法,对比本模型计算结果,运用tNavigtor软件对3种方法进行采收率预测。研究结果表明:运用本文方法对油藏进行合理配产具有较好的开发效果,油藏采收率相对较高,研究结果对该类低渗油藏的开发具有较好的借鉴意义。

关键词：高倾角低渗透油藏 CO_(2)驱渗流理论压敏效应合理配产

卓越农林人才“双循环”协同育人实践体系构建——以东北农业大学为例

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黑龙江教师发展学院学报 2024年第2期43卷 55-58页

作者：刘钊熠李金龙周航宽东北农业大学学生工作部哈尔滨150030 东北农业大学动物医学学院哈尔滨150030

培养卓越农林人才对加快建设农业强国,全面推进乡村振兴具有重要意义,而实践育人是高校培养卓越农林人才的重要环节。针对卓越农林人才培养实践中面临的实践育人内生动力不足、不同育人形式融合协同不足、实践育人资源整合不足等问题,... 详细信息

培养卓越农林人才对加快建设农业强国,全面推进乡村振兴具有重要意义,而实践育人是高校培养卓越农林人才的重要环节。针对卓越农林人才培养实践中面临的实践育人内生动力不足、不同育人形式融合协同不足、实践育人资源整合不足等问题,构建卓越农林人才“双循环”协同育人实践体系,以期为高校卓越农林人才培养实践提供借鉴。

关键词：卓越农林人才协同育人实践体系

Close-packed layer spacing as a practical guideline for structure symmetry manipulation of IV-VI/I-V-VI_(2) thermoelectrics

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InfoMat 2024年第2期6卷 99-106页

作者： Tao jin long Yang Xinyue Zhang Wen li Yanzhong Pei Interdisciplinary Materials Research Center School of Materials Science and EngineeringTongji UniversityShanghaithe People's Republic of China

The crystal-structure symmetry in real space can be inherited in the reciprocal space,making high-symmetry materials the top candidates for thermoelectrics due to their potential for significant electronic band degeneracy.A practical indicator that can quantitatively describe structural changes would help facilitate the advanced thermoelectric material *** face-centered cubic structures,the spatial environment of the same crystallographic plane family is isotropic,such that the distances between the close-packed layers can be derived from the atomic distances within the *** by this,the relationship between inter-and intra-layer geometric information can be used to compare crystal structures with their desired cubic *** close-packed layer spacing was found to be a practical guideline of crystal structure symmetry in IV-VI chalcogenides and I-V-VI_(2) ternary semiconductors,both of which are historically important *** continuous structural evolution toward high symmetry can be described by the layer spacing when temperature or/and composition change,which is demonstrated by a series of pristine and alloyed thermoelectric materials in this *** layerspacing-based guideline provides a quantitative pathway for manipulating crystal structures to improve the electrical and thermal properties of thermoelectric materials.

关键词： phase transition structure manipulation thermoelectric materials x-ray diffraction

Two-dimensional particle-in-cell modeling of blow-off impulse by X-ray irradiation

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Nuclear Science and Techniques 2024年第3期35卷 53-69页

作者： Ruibo li jin-long Jiao Hui Luo Dezhi Zhang Dengwang Wang Kai Wang Graduate School of China Academy of Engineering Physics Beijing 100193China Zhejiang Institute of Modern Physics Institute of AstronomySchool of PhysicsZhejiang UniversityHangzhou 310027China National Key Laboratory of Intense Pulsed Radiation Simulation and Effect Northwest Institute of Nuclear TechnologyXi’an 710024China

Space objects such as spacecraft or missiles may be exposed to intense X-rays in outer space,leading to severe *** reinforcement of these objects to reduce the damage caused by X-ray irradiation is a significant *** blow-off impulse(BOI)is a crucial physical quantity for investigating material damage induced by X-ray ***,the accurate calculation of BOI is challenging,particularly for large deformations of materials with complex *** this study,we develop a novel two-dimensional particle-in-cell code,Xablation2D,to calculate BOIs under far-field X-ray *** significantly reduces the dependence of the numerical simulation on the grid *** reliability of this code is verified by simulation results from open-source codes,and the calculated BOIs are consistent with the experimental and analytical results.

关键词： X-ray irradiation Energy deposition Blow-off impulse Particle in cells

新文科背景下课程思政融入师范专业课程的困境与出路

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兵团教育学院学报 2024年第1期34卷 29-35页

作者：方建华李金龙刘思羽陈慧慧石河子大学师范学院/兵团教育学院新疆石河子832003 石河子大学师范学院新疆石河子832003

新文科建设的改革与实践对于培养担当民族复兴大任的时代新人具有深远价值和意义,课程思政有效融入是新文科建设的重要内容。研究在S大学师范学院随机抽取38名专任教师和291名大一至大三年级师范生进行问卷调查,发现当前师范专业课程思... 详细信息

新文科建设的改革与实践对于培养担当民族复兴大任的时代新人具有深远价值和意义,课程思政有效融入是新文科建设的重要内容。研究在S大学师范学院随机抽取38名专任教师和291名大一至大三年级师范生进行问卷调查,发现当前师范专业课程思政融入的主要困境在于教师课程思政融入意识薄弱、课程思政元素开发能力不足、教学方式的综合运用欠缺、课程思政评价方式单一。基于此,研究认为可以从教师和高校两个方面出发促进师范专业课程思政融入:教师需要树立以德育人观念,探课程思政融入策略;学校可以通过“减”“赋”“增”路径助力课程思政。

关键词：新文科课程思政融入师范专业课程

Privacy-Preserving Federated Mobility Prediction with Compound Data and Model Perturbation Mechanism

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China Communications 2024年第3期21卷 160-173页

作者： long Qingyue Wang Huandong Chen Huiming jin Depeng Zhu lin Yu li li Yong Beijing National Research Center for Information Science and Technology(BNRist) Department of Electronic EngineeringTsinghua UniversityBeijing 100084China China Mobile Research Beijing 100032China

Human mobility prediction is important for many ***,training an accurate mobility prediction model requires a large scale of human trajectories,where privacy issues become an important *** rising federated learning provides us with a promising solution to this problem,which enables mobile devices to collaboratively learn a shared prediction model while keeping all the training data on the device,decoupling the ability to do machine learning from the need to store the data in the ***,existing federated learningbased methods either do not provide privacy guarantees or have vulnerability in terms of privacy *** this paper,we combine the techniques of data perturbation and model perturbation mechanisms and propose a privacy-preserving mobility prediction algorithm,where we add noise to the transmitted model and the raw data collaboratively to protect user privacy and keep the mobility prediction *** experimental results show that our proposed method significantly outperforms the existing stateof-the-art mobility prediction method in terms of defensive performance against practical attacks while having comparable mobility prediction performance,demonstrating its effectiveness.

关键词： federated learning mobility prediction privacy

Multi-omics analysis to identify CBR3-AS1-hsa-miR-145-5p-MAP3K5 pathway as a ferroptosis-related ceRNA network in benign prostatic hyperplasia

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Genes & Diseases 2024年第5期11卷 105-108页

作者： liang Zhou Youyou li Jiaren li Hanyu Yao jin Huang Cheng li long Wang Department of Urology The Third Xiangya Hospital of Central South UniversityChangshaHunan 410013China

In aging males,benign prostatic hyperplasia(BPH)is a chronic pathological process that primarily causes lower urinary tract *** to histopathology,BPH is caused by an imbalance between cell death and proliferation.1 However,the exact pathophysiology remains *** is a newly discovered form of programmed cell *** cell morphology is characterized primarily by the reduction or disappearance of mitochondrial cristae and mitochondrial shrinkage.2,3 Competing endogenous RNAs(ceRNAs)are important regulators of many biological processes and have been involved in various diseases.

关键词： prostatic endogenous BPH

Congener-derived template to construct lithiophilic organic-inorganic layer/interphase for high volumetric capacity dendrite-free li metal batteries

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Chinese Chemical Letters 2024年第3期35卷 453-460页

作者： Kang Yang long li Yuanbin Xiao Qiaoli Zhang Chenpeng Xi Borong li Yan Yu Chengkai Yang Key Laboratory of Advanced Materials Technologies International(HongKong Macao and Taiwan)Joint Laboratory on Advanced Materials TechnologiesCollege of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

The development of lithium-metal batteries(LMBs)is seriously restricted by the out-of-control dendrites growth and infinite volume ***,a pervasive organic-inorganic layer construction strategy is reported for the composite lithium metal anode with congener-derived organic-inorganic solid electrolyte interphase(SEI).In this strategy,the organic-inorganic Ag@polydopamine(Ag@PDA)layer is coated on the arbitrary substrates by a simple two-step *** thin and stable congener-derived SEI is insitu formed with fewer inorganic components and more organic components during charging/*** polydopamine with sufficient adhesion groups and lithiophilic Ag layer realize near-zero nucleation overpotential during lithium *** low interface resistance and stable lithium deposition are ***,the practical areal and volumetric capacities of the composite anode with three-dimensional copper(3DCu)as the substrate are 10 mAh/cm^(2)and 1538 mAh/cm^3(*** mass of anode).The symmetrical cell shows very low polarization voltage(10 mV)and more than 2500 h cycles life at 1 mA/cm^(2)(1 mAh/cm^(2)).The liNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)-based full cells show improved capacity retention(82%)after 100 cycles at 0.5 *** modified lithiophilic anode with congener-derived interphase provides a promising strategy to realize the next-generation dendrite-free LMBs.

关键词： lithium metal anode Congener-derived lithiophilicity Volumetric capacity Organic-inorganic interphase