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Journal of Iron and Steel Research International 2024年第1期31卷 3-23页

作者： Xue-cheng Peng Han-jie guo Xin-fang Zhang Yi-wa Luo Ye Sun Jing guo Rong-guang Yang Xiao-dan Zheng School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials University of Science and Technology Beijing(USTB)Beijing100083China Beijing Shougang Gitane New MATERIALS Co. Ltd.Beijing102206China

Heat-resistant alloys with excellent mechanical properties are widely used in various fields,and further improvement in their properties is essential to meet the requirements in new-generation advanced supercritical boilers,nuclear reactors,superheaters,and other new materials *** effectively enhance the comprehensive performance of heat-resistant alloys,second-phase particle strengthening has been widely studied,and in the face of different service envi-ronments of advanced heat-resistant steels,the selection of suitable second-phase particles is essential to maximize the performance of these *** this end,three major types of reinforcing phases in heat-resistant alloys such as carbides,rare earth oxides,and intermetallic compounds are summarized.A comparative analysis of the precipitation behavior of the reinforcing phases with different types as well as the risks and means of controlling their use in service,is *** parameters for the application of various types of second-phase particles in heat-resistant alloys are provided to support the design and preparation of new ultrahigh-performance heat-resistant alloys.

关键词： Heat-resistant alloy Second-phase particle Carbide Rare earth oxide Intermetallic compound Strengthening

Innovations in metallurgical and materials processes:advancing liquid theory and honoring ***-jie guo's contributions to physical chemistry in metallurgy

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Journal of Iron and Steel Research International 2024年第1期31卷 1-2页

作者： Shuai Liu Jing guo Han-jie guo School of Artificial Intelligence Beijing Technology and Business UniversityBeijing100048China School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China

Spanning three decades,***-jie guo's research group has dedicated itself to exploring the fundamental theories and practical applications of physical chemistry within the realm of *** under the assumption that molecul... 详细信息

关键词： chemistry liquid complexes

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不同工艺对NdFeB永磁体的性能影响

兵器材料科学与工程 1999年第5期22卷 42-44页

作者：高娃兵器工业第五二研究所

介绍了（ＢＨ）ｍ＞３２０ｋＪ／ｍ３的高能积ＮｄＦｅＢ永磁体研究和生产现状及发展趋势，可采用合金设计。

关键词：钕铁硼永磁体高能积NdFeB 双相工艺HD 工艺

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基于GMM核的LS-SVM真核启动子模型

化工学报 2013年第12期64卷 4662-4666页

作者：郭烁袁德成郭娲沈阳化工大学信息工程学院辽宁沈阳100142 国网辽宁省电力有限公司铁岭供电公司人力资源部辽宁铁岭112000

由于真核启动子DNA序列结构复杂、数据量巨大,启动子序列辨识一直是一个难点。首先对真核启动子序列寡核苷酸位置分布特征进行高斯混合模型建模,能够将出现频率少但重要的基序提取出来。并将高斯混合模型作为真核启动子最小二乘支持向... 详细信息

由于真核启动子DNA序列结构复杂、数据量巨大,启动子序列辨识一直是一个难点。首先对真核启动子序列寡核苷酸位置分布特征进行高斯混合模型建模,能够将出现频率少但重要的基序提取出来。并将高斯混合模型作为真核启动子最小二乘支持向量机分类器中的核函数,将最小二乘支持向量机模型简化为最小二乘模型,计算量减少。辨识结果表明,该算法的辨识精度优于贝叶斯辨识算法,和RBF核LS-SVM相比,辨识精度基本相同,建模时间略有缩短。

关键词：高斯混合模型核函数最小二乘支持向量机脱氧核糖核酸模型简化算法

随钻地层压力预监测技术研究与应用——以库车坳陷克拉苏构造带博孜-大北地区为例

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地下水 2024年第3期46卷 161-164页

作者：胡伟李刚王国瓦买振杨绍存于春勇郑鹏飞殷文荣中国石油塔里木油田公司勘探开发研究院新疆库尔勒841000 中国石油渤海钻探第一录井公司天津大港300280

沉积盆地中普遍存在异常高压,库车前陆盆地克拉苏构造带经历了多期构造运动,纵向发育多套压力系统,超压成因机制差异化显著,钻井施工难度大。因此,地层压力准确预监测对钻井工程参数、泥浆性能、井身结构优化及安全高效钻井意义重大。... 详细信息

沉积盆地中普遍存在异常高压,库车前陆盆地克拉苏构造带经历了多期构造运动,纵向发育多套压力系统,超压成因机制差异化显著,钻井施工难度大。因此,地层压力准确预监测对钻井工程参数、泥浆性能、井身结构优化及安全高效钻井意义重大。本文通过地震、测井、钻井资料研究基础上,开展了克拉苏构造带超压成因机制以及纵横向压力分布特征研究,基于传统dc指数压力预监测方法,引入全烃校正系数创新优化了dc指数计算模型,提高了准确性和时效性,通过10口井的现场应用表明,该方法符合率高,计算结果相对误差为平均5.7%,效果较好,适用于复杂成因和地层,能够为塔里木油田钻井现场规避井漏、卡钻等风险提供及时有效的科学依据。

关键词：库车坳陷克拉苏构造带压力预测压力监测 Eaton法 dc指数

多波长线性回归-矩阵法同时测定乙二醛、乙醛酸、草酸的含量

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分析试验室 2011年第6期30卷 103-105页

作者：李萍郭瓦力沈阳化工大学化学工程学院沈阳110142 沈阳化工大学沈阳110142

根据实验得出的乙二醛、乙醛酸、草酸三组分混合物中各组分在特定波长下呈现出的良好的线性关系,建立起三组分质量浓度与混合吸光度的回归方程组,形成了多波长线性回归-矩阵法,实现了乙二醛氧化制备乙醛酸体系中反应产物乙二醛、乙醛酸... 详细信息

根据实验得出的乙二醛、乙醛酸、草酸三组分混合物中各组分在特定波长下呈现出的良好的线性关系,建立起三组分质量浓度与混合吸光度的回归方程组,形成了多波长线性回归-矩阵法,实现了乙二醛氧化制备乙醛酸体系中反应产物乙二醛、乙醛酸、草酸含量的同时测定。研究结果表明:当乙二醛检测下限为1.024 mg/L时,回收率为94%～98%;乙醛酸检测下限为1.7 mg/L时,回收率为93.3%～96.8%;草酸检测下限为3.99 mg/L时,回收率为96%～103%。

关键词：线性回归乙二醛乙醛酸草酸矩阵

Emerging direct current triboelectric nanogenerator for high-entropy mechanical energy harvesting

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Science China(Technological Sciences) 2024年第5期67卷 1297-1316页

作者： CHEN Jie guo RuiLong guo HengYu College of Physics and Electronic Engineering Chongqing Normal UniversityChongqing 401331China Department of Applied Physics Chongqing UniversityChongqing 401331China

In the era of the Internet of Things(IoT),the provision of sustainable power to distributed,mobile,and low-power-consumption electronic devices is a critical *** overcome this challenge,the triboelectric nanogenerator(TENG),a highly efficient high-entropy mechanical energy harvesting device,was developed in *** device enables the direct conversion of irregular and low-frequency mechanical energy into pulsed alternating current(AC)***,the incompatibility of most electronic devices with AC signals necessitates rectifier circuits or generators that deliver direct current(DC)*** recent years,DC-TENGs have undergone extensive development,achieving significant milestones in various application fields while also facing crucial challenges that require *** this review,three categories of DC-TENG devices with distinct operating mechanisms are comprehensively explored:multiphase coupling,mechanical rectification,and air *** typical structures and working mechanisms are thoroughly discussed,and specific output performance limitations,along with corresponding optimization strategies,are ***,the applications of DC-TENGs in various scenarios are ***,the challenges faced by DC-TENGs and potential solutions are analyzed to guide further advancements in this technology.

关键词： TENG direct current working mechanisms output performance limitations optimization strategies

Physicochemical principles of hydrogen metallurgy in blast furnace

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Journal of Iron and Steel Research International 2024年第1期31卷 46-63页

作者： Han-jie guo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing100083China

Based on the stoichiometric method and the free energy minimization method,an ideal model for the reduction of iron oxides by carbon and hydrogen under blast furnace conditions was established,and the reduction efficiency and theoretical energy consumption of the all-carbon blast furnace and the hydrogen-rich blast furnace were *** results show that after the reduction reaction is completed at the bottom of the blast furnace,the gas produced by reduction at 1600℃still has a certain excessive reduction capacity,which is due to the hydrogen brought in by the hydrogen-rich blast as well as the excess carbon monoxide generated by the reaction of the coke and the oxygen brought in by the *** the process of the gas with excessive reduction capacity rising from the bottom of the blast furnace and gas reduction process,the excessive reduction capacity of the gas gradually decreases with the increase in the dydrogen content in the *** the all-carbon blast furnace,the excess gas reduction capacity is the strongest,and the total energy consumption per ton of iron reduction is the *** shows that,for the current operation mode of the blast furnace,adding hydrogen in the blast furnace cannot reduce the consumption of carbon required for reduction per ton of iron,but rather increases the consumption of carbon.

关键词： Hydrogen metallurgy Excess gas reduction capacity Theoretical energy consumption Hydrogen-rich blast furnace Thermodynamic model Gibbs minimum free energy method

Control Strategies for Digital Twin Systems

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 170-180页

作者： guo-Ping Liu IEEE the Center for Control Science and Technology Southern University of Science and TechnologyShenzhen 518055China

With the continuous breakthrough in information technology and its integration into practical applications, industrial digital twins are expected to accelerate their development in the near future. This paper studies various control strategies for digital twin systems from the viewpoint of practical *** make full use of advantages of digital twins for control systems, an architecture of digital twin control systems, adaptive model tracking scheme, performance prediction scheme, performance retention scheme, and fault tolerant control scheme are proposed. Those schemes are detailed to deal with different issues on model tracking, performance prediction, performance retention, and fault tolerant control of digital twin systems. Also, the stability of digital twin control systems is analysed. The proposed schemes for digital twin control systems are illustrated by examples.

关键词： Digital twin control systems fault tolerant control model tracking performance prediction performance retention