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An innovative flake graphite upgrading process based on HPGR,stirred grinding mill, and nanobubble column flotation

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International Journal of Mining Science and Technology 2021年第6期31卷 1063-1074页

作者： fangyuan ma Dongping Tao Youjun Tao Shuyong Liu Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education School of Chemical Engineering and TechnologyChina University of Mining and TechnologyXuzhou 221116China School of Resources and Environmental Engineering Shandong University of TechnologyZibo 255049China School of Mining Engineering University of Science&Technology LiaoningAnshan 114051China

Physical upgrading of graphite is typically achieved with many stages of grinding and flotation to produce a concentrate with approximately 95% carbon *** innovative grinding and column flotation process has been developed for efficient graphite upgrading to substantially simplify the process flowsheet and reduce operating *** this process,a high-pressure grinding roller(HPGR) and a stirred mill were employed as primary comminution techniques and a nanobubble flotation column as a key separation *** results obtained with a crystalline flake graphite sample with a carbon grade of 11.15% show that the novel process can produce a concentrate with 94.82% carbon grade and 97.89% recovery from an open circuit of one rougher and two cleaner flotation *** electron microscope(SEM)microphotographs indicate that HPGR offers the advantage of more effective protection of graphite flakes during *** test results show that stirred mill could not only protect graphite flakes but also promote the efficient liberation of *** with the traditional flotation process,nanobubble flotation can effectively recover ultrafine *** new process possesses a number of important advantages over the traditional method,including substantially higher graphite recovery,greatly simplified process flowsheet,better protection of flake size,reduced reagent consumption and process costs,etc.

关键词： Column flotation Graphite HPGR Microbubbles Nanobubbles Stirred mill

Early identification of process deviation based on convolutional neural network

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Chinese Journal of Chemical Engineering 2023年第4期56卷 104-118页

作者： fangyuan ma Cheng Ji Jingde Wang Wei Sun College of Chemical Engineering Beijing University of Chemical TechnologyBeijing 100029China Center of Process Monitoring and Data Analysis Wuxi Research Institute of Applied TechnologiesTsinghua UniversityWuxi 214072China

A novel process monitoring method based on convolutional neural network(CNN)is proposed and applied to detect faults in industrial *** utilizing the CNN algorithm,cross-correlation and autocorrelation among variables are captured to establish a prediction model for each process variable to approximate the first-principle of physical/chemical relationships among different variables under normal operating *** the process is operated under pre-set operating conditions,prediction residuals can be assumed as noise if a proper model is *** process faults occur,the residuals will increase due to the changes of correlation among variables.A principal component analysis(PCA)model based on the residuals is established to realize process *** monitoring the changes in main feature of prediction residuals,the faults can be promptly *** studies on a numerical nonlinear example and data from two industrial processes are presented to validate the performance of process monitoring based on CNN.

关键词： Process monitoring Residual Principal component analysis Process systems Systems engineering

Strongly nonlinear topological phases of cascaded topoelectrical circuits

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Frontiers of physics 2023年第3期18卷 51-58页

作者： Jijie Tang fangyuan ma Feng Li Honglian Guo Di Zhou College of Science Minzu University of ChinaBeijing 100081China Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)School of PhysicsBeijing Institute of TechnologyBeijing 100081China

Circuits provide ideal platforms of topological phases and matter,yet the study of topological circuits in the strongly nonlinear regime,has been *** propose and experimentally demonstrate strongly nonlinear topological phases and transitions in one-dimensional electrical circuits composed of nonlinear *** topological interface modes arise on domain walls of the circuit lattices,whose topological phases are controlled by the amplitudes of nonlinear voltage *** measured topological transition amplitudes are in good agreement with those derived from nonlinear topological band *** prototype paves the way towards flexible metamaterials with amplitude-controlled rich topological phases and is readily extendable to two and three-dimensional systems that allow novel applications.

关键词： strongly nonlinear Berry phase topological electrical

Design, Synthesis, Inhibiting HDACs Ability and Antitumor Activity of Pyrimidin-4（3H）-one Hydroxamate Derivatives

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Chemical Research in Chinese Universities 2016年第4期32卷 576-580页

作者： LU Haibin JIN Xiangqun JIN Yang HUANG Bangrui WANG Cheng WANG Chunhe ma fangyuan CHEN Yuting LI Jiarui CONG Yu WANG Wenlong SONG Yuming MU Xupeng College of Pharmacy Jilin University Changchun 130021 P. R. China China-Japan Union Hospital of Jilin University Changchun 130033 P. R. China

A series of novel pyrimidin-4（3H）-one hydroxamate derivatives was designed, synthesized and studied for their activities against histone deacetylases（HDACs）. The results indicate that all the compounds show HDACs inhibitiory activity. The antiproliferative activities of the compounds against HeLa and A549 cells were also investigated. The pharmacological results show compound 9g has potent activity in the enzymatic inhibition assay and cell-based assay.

关键词： Histone deacetylase Antitumor acitivty Pyrimidin-4(3H)-one hydroxamate derivative

面向大语言模型学习环境的小学语文教学路径变革

维普期刊数据库评论

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教育科学研究 2024年第9期 57-64页

作者：马方原于伟东北师范大学教育学部 130024 东莞市凤岗益田实验小学

大语言模型已经凭借其超强的语文能力,将生成式人工智能及其应用推向了全新的高度。在此大背景下,我国小学语文教学也面临着前所未有的挑战。语文学习自古以来具有重要的时代特征,大语言模型的诞生作为语文学习环境变革的关键节点,对语... 详细信息

大语言模型已经凭借其超强的语文能力,将生成式人工智能及其应用推向了全新的高度。在此大背景下,我国小学语文教学也面临着前所未有的挑战。语文学习自古以来具有重要的时代特征,大语言模型的诞生作为语文学习环境变革的关键节点,对语文教学提出了培养学生生成式语文能力的新要求。为实现对学生生成式语文能力的培养,小学语文教学应具有语文教学的叙事性对抗职能,帮助学生树立文化自信;应具有思维生成式引导职能,培养学生语言运用与思维能力;应具有美感对话职能,培养学生交际与写作能力。为培养学生的生成式语文能力,小学语文教学应立足于未来人机互动环境,培养学生语言优势;针对多元综合问题,实施跨学科主题单元教学;遵循教育导向价值立场,严守技术应用伦理底线。

关键词：大语言模型小学语文教学生成式语文能力

Submicrometer optical frequency combs based on SPPs metallic multi-ring resonators

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Photonics Research 2023年第12期11卷 2105-2112页

作者： ZHITAO HUANG fangyuan ma KEQIAN DONG SHIZHONG YUE CHAO LI YULIN WU JUNHUI HUANG XU HAN JIAQIAN SUN ZHAOFENG LI KONG LIU ZHIJIE WANG YONG LEI SHENGCHUN QU ZHANGUO WANG Key Laboratory of Semiconductor materials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Integrated Circuits and Electronics MIIT Key Laboratory for Low-Dimensional Quantum Structure and DevicesBeijing Institute of TechnologyBeijing 100081China Engineering Research Center for Semiconductor Integrated Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Fachgebiet Angewandte Nanophysik Institut für Physik&IMN MacroNanoTechnische UniversitätIlmenauIlmenau 98693Germany

Optical frequency combs(OFCs)have great potential in communications,especially in dense wavelength-division ***,the size of traditional OFCs based on conventional optical microcavities or dispersion fibers is at least tens of micrometers,far larger than that of nanoscale electronic ***,reducing the size of OFCs to match electronic chips is of ***,for the first time to our knowledge,we introduce surface plasmon polaritons(SPPs)to the construction of OFCs to realize a miniature *** thickness of our device is reduced below 1μ*** the presence of SPPs may induce ohmic and scattering loss,the threshold of the device is obtained as 9μW,comparable to the conventional ***,the response time is 13.2 ps,much faster than the optical *** work provides a feasible strategy for the miniaturization of OFCs.

关键词： metallic faster feasible

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高压辊磨对细鳞片石墨解离的影响

中国矿业 2024年第4期33卷 227-232页

作者：刘浩然马芳源辽宁科技大学矿业工程学院辽宁鞍山114051

为了研究高压辊磨对细鳞片石墨的粉碎特征,通过对比不同粉碎产物的粒度组成和浮选精矿的粒度组成,得出高压辊磨产物和球磨产物的分离和护片效果。通过浮选动力学实验研究了高压辊磨产物和球磨产物的浮选率。在此基础上,利用扫描电镜对... 详细信息

为了研究高压辊磨对细鳞片石墨的粉碎特征,通过对比不同粉碎产物的粒度组成和浮选精矿的粒度组成,得出高压辊磨产物和球磨产物的分离和护片效果。通过浮选动力学实验研究了高压辊磨产物和球磨产物的浮选率。在此基础上,利用扫描电镜对球磨浮选精矿和高压辊磨产物的微观形貌进行了表征,揭示了细鳞片石墨的解离和保护机理。研究结果表明:基于石墨鳞片本身的韧性和高压辊磨粉碎过程的线接触,高压辊磨对石墨鳞片有明显的保护作用,促进石墨的解离。浮选动力学试验表明:高压辊磨产物在实际生产中显著提高了细鳞片石墨的浮选速率和浮选指标。扫描电镜分析结果表明:高压辊磨促进裂隙沿着石墨和脉石的共生界面产生,促进了石墨的解离和鳞片的保护。该研究为细鳞片石墨保护和高效解离提供了理论指导。

关键词：高压辊磨球磨细鳞片石墨解离浮选

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杨树苗木繁殖技术

农业工程 2018年第6期8卷 129-130页

作者：马方援青海省海南藏族自治州共和县恰卜恰镇人民政府共和813099

杨树是一种常见大型落叶乔木,生长适应性强,可以作为纤维板生产和工业造纸的原材料,也可以使用杨树营造防风林。介绍了目前杨树苗木常用的繁殖技术手段,可为杨树繁育提供理论参考。

关键词：杨树苗木繁育

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大学生时间管理倾向调查分析及培养策略

航空航天医学杂志 2014年第12期25卷 1633-1635页

作者：马方圆吉林医药学院心理学教研室吉林吉林132013

目的调查大学生时间管理倾向现状,提出培养大学生时间管理能力的策略。方法采用青少年时间管理倾向量表,对大学四个年级的186名学生进行问卷测量。结果大学生时间管理倾向处于正常水平,大学生时间管理倾向在性别、年级、籍贯、独生或非... 详细信息

目的调查大学生时间管理倾向现状,提出培养大学生时间管理能力的策略。方法采用青少年时间管理倾向量表,对大学四个年级的186名学生进行问卷测量。结果大学生时间管理倾向处于正常水平,大学生时间管理倾向在性别、年级、籍贯、独生或非独生上没有表现出显著差异。结论大学生时间管理倾向处于正常水平,但没有因为社会的发展和时间的推移而表现出进步。可以通过强化时间观念,制定计划和提高效率以及学校的辅导和训练等方式培养和提高大学生的时间管理能力和行为习惯。

关键词：大学生时间管理倾向