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Acta Geochimica 2024年第2期43卷 385-398页

作者： Jianzhao yin Yuhong Chao haoyu yin Hongyun Shi Shoupu Xiang Wuhan Institute of Technology Wuhan 430074China College of Earth Sciences Jilin UniversityChangchun 130061China Ganzhongnan Institute of Geology and Mineral Exploration Nanchang 330002China Guinea Westfi eld Mining Company-Sarlu Jinzhong 031300China Orient Resources Ltd. RichmondB.C.V7E 1M8Canada Silvercorp Metals Inc. Beijing 100027China

By studying the light isotopic compositions of carbon,oxygen,and hydrogen,combined with previous research results on the ore-forming source of the deposit,the authors try to uncover its metallogenic origin.The δ^(18)O and δ^(13)C isotope signatures of dolomite samples vary between 10.2 and 13.0‰,and between−7.2 and−5.2‰,respectively,implying that the carbon derives from the upper mantle.δD and δ^(18) O of quartz,biotite,and muscovite from diff erent ore veins of the deposit vary between−82 and−59‰,and between 11.6 and 12.4‰,respectively,implying that the metallogenic solutions are mainly magmatic.According to the relevant research results of many isotope geologists,the fractionation degree of hydrogen isotopes increases as the depth to the Earth’s core increases,and the more diff erentiated the hydrogen isotopes are,the lower their values will be.In other words,mantle-derived solutions can have extremely low hydrogen isotope values.This means that the δD‰ value−134 of the pyrrhotite sample numbered SD-34 in this article may indicate mantle-derived oreforming fl uid of the deposit.The formation of the Dashuigou tellurium deposit occurred between 91.71 and 80.19 Ma.

关键词： Carbon oxygen and hydrogen isotopes Origin Independent tellurium deposit The Qinghai–Xizang Plateau

Machine learning for membrane design and discovery

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Green Energy & Environment 2024年第1期9卷 54-70页

作者： haoyu yin Muzi Xu Zhiyao Luo Xiaotian Bi Jiali Li Sui Zhang Xiaonan Wang Department of Chemical Engineering Tsinghua University100084BeijingChina School of Materials Science&Engineering Tsinghua University100084BeijingChina Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore117576Singapore

Membrane technologies are becoming increasingly versatile and helpful today for sustainable development.Machine Learning(ML),an essential branch of artiﬁcial intelligence(AI),has substantially impacted the research and development norm of new materials for energy and environment.This review provides an overview and perspectives on ML methodologies and their applications in membrane design and dis-covery.A brief overview of membrane technologies isﬁrst provided with the current bottlenecks and potential solutions.Through an appli-cations-based perspective of AI-aided membrane design and discovery,we further show how ML strategies are applied to the membrane discovery cycle(including membrane material design,membrane application,membrane process design,and knowledge extraction),in various membrane systems,ranging from gas,liquid,and fuel cell separation membranes.Furthermore,the best practices of integrating ML methods and speciﬁc application targets in membrane design and discovery are presented with an ideal paradigm proposed.The challenges to be addressed and prospects of AI applications in membrane discovery are also highlighted in the end.

关键词： Machine learning Membranes AI for Membrane Data-driven Design

Flexibility analysis for continuous ibuprofen manufacturing processes

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Chinese Journal of Chemical Engineering 2022年第11期51卷 115-125页

作者： Wenhui Yang haoyu yin Zhihong Yuan Bingzhen Chen State Key Laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China School of Material Science and Engineering Tsinghua UniversityBeijing 100084China Department of Chemical Engineering Tsinghua UniversityBeijing 100084China

Continuous ibuprofen(a widespread used analgesic drug)manufacturing is full of superiorities and is a fertile field both in industry and academia since it can not only effectively treat rheumatic and other chronic and painful diseases,but also shows great potential in dental diseases.As one of central elements of operability analysis,flexibility analysis is in charge of the quantitative assessment of the capability to guarantee the feasible operation in face of variations on uncertain parameters.In this paper,we focus on the flexibility index calculation for the continuous ibuprofen manufacturing process.We update existing state-of-the-art formulations,which traditionally lead to the max-max-max optimization problem,to approach the calculation of the flexibility index with a favorable manner.Advantages regarding the size of the mathematical model and the computational CPU time of the modified method are examined by four cases.In addition to identifying the flexibility index without any consideration of control variables,we also investigate the effects of different combinations of control variables on the flexibility property to reveal the benefits from taking recourse actions into account.Results from systematic investigations are expected to provide a solid basis for the further control system design and optimal operation of continuous ibuprofen manufacturing.

关键词： Continuous manufacturing Pharmaceuticals Mathematical modeling Flexibility analysis Mixed integer programing Optimization

Correlations between trace elements in pyrite and gold mineralization of gold deposits on the North China platform

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Acta Geochimica 2023年第6期42卷 1079-1103页

作者： Jianzhao yin ying Sun haoyu yin Hongyun Shi James Sparling Yuhong Chao Shoupu Xiang College of Earth Sciences Jilin UniversityChangchun 130061China Wuhan Institute of Technology Wuhan 430074China College of Geoexploration Science and Technology Jilin UniversityChangchun 130062China Guinea Westfield Mining Company-Sarlu Jinzhong 031300China Orient Resources Ltd. RichmondBC V7A 4V5Canada Hochschild Mining Canada Corp. Suite 1700 Park Place666 Burrard StreetVancouverBC V6C 2X8Canada Ganzhongnan Institute of Geology and Mineral Exploration 658 Jiefangxilu RoadNanchang 330002China Silvercorp Metals Inc. Suite 601-Building 1China View Mansion#A2 East GongTi RoadChaoyang DistrictBeijing 100027China

By studying both the microscopic physical and chemical typomorphic characteristics of typical mineral pyrite samples associated with representative gold deposits on the north-central margin of the North China Platform,this paper seeks to identify macroscopic metallogenic mechanisms of gold deposits and to reveal the formation mechanism of lattice gold in pyrite.Typomorphic characteristics of pyrite reveal that pyrite grain size has a negative correlation with gold content.Cubic pyrite,as the dominant crystal form,contains more gold than pentagonal dodecahedral pyrite.Both pyrite crystal forms and chemical compositions indicate that the replacement style of gold deposit formed in a low saturability,low sulfur fugacity,and at temperatures either much higher or much lower than its best forming temperature;comparatively,that of the quartz vein style of gold deposit occurred under conditions with the best temperature,rich in sulfur,and with high sulfur fugacity.The Au/Ag ratios of the pyrites show that both the replacement and quartz vein styles of deposits are mesothermal and hypothermal,while the Co/Ni ratios of the pyrites indicate that the quartz vein style is of magmatic-hydrothermal origin.The X-ray diffraction intensity of pyrite rich in gold is lower than that of pyrite poor in gold at the quartz vein style.In general,with an increase in gold content in pyrite,the total sum intensityΣI decreases.The pyroelectricity coefficient has a negative correlation trend with the values of(Co+Ni+Se+Te)-As and(Co+Ni+Se+Te)/As.The pyrite pyroelectricity of the replacement style is N-type,indicating that it formed under low sulfur fugacity,while that of the quartz vein style is a mixture of P-N types,indicating that it formed under high sulfur fugacity.On the pyroelectricity-temperature diagram,pyrite of the replacement style is mainly distributed between 200 and 270°C,while that of the quartz vein style varies between 90–118 and274–386°C,demonstrating a multistage forming process.In contrast to previous researchers'conclusi

关键词： Unit cell parameter Pyroelectricity Electron paramagnetic resonance Infrared spectrum Pyrite Gold deposit

组织变革视角下乡村小规模学校高质量发展的困境与突破

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教育研究 2024年第2期45卷 31-42页

作者：尹浩宇赵丹中国人民大学教育学院北京100872 陕西师范大学教育学部西安710062

乡村小规模学校作为推进县域教育公共服务均等化、促进乡村人力资本提升的重要载体,其高质量发展不仅是补齐乡村教育短板的关键,也是建设高质量教育体系不可或缺的组成部分。在这一过程中,组织变革是适应乡村小规模学校班级规模较小、... 详细信息

乡村小规模学校作为推进县域教育公共服务均等化、促进乡村人力资本提升的重要载体,其高质量发展不仅是补齐乡村教育短板的关键,也是建设高质量教育体系不可或缺的组成部分。在这一过程中,组织变革是适应乡村小规模学校班级规模较小、管理方式灵活等特殊性的关键动力,有助于提升办学质量。但当前乡村小规模学校存在组织目标不清晰,组织结构呈跨校科层制,扁平化优势体现不足,组织变革能力及实践效果不尽如人意等问题。基于学习型组织、科层组织和非正式组织等相关理论及其主要特征,围绕愿景、价值、战略等核心要素,通过构建乡村小规模学校“愿景—促进”组织变革模式,可以增强组织变革的内驱力和创造力。推进乡村小规模学校高质量发展亟待转变学校组织发展理念,强化育人为本教育观念;重塑学校组织发展目标,挖掘学校发展内生动力;优化学校组织制度,促进组织高效运行;创生学校“在地化”组织文化,推进校地共生发展;再造学校组织环境,拓展高质量学习空间;优化学校组织技术,提升组织运行效率。各级政府应通过构建多元治理共同体、完善小规模学校治理政策、优化小规模学校治理机制、应用数字教育教学资源,为乡村小规模学校组织变革提供保障。

关键词：基础教育乡村小规模学校教育高质量发展组织变革

Origin of the Dashuigou Independent Tellurium Deposit at the Southeastern Qinghai-Tibet Plateau:Based on the Abundances of Trace Elements in the Country Rocks

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Advances in Geological and Geotechnical Engineering Research 2023年第4期5卷 41-55页

作者： Jianzhao yin Shoupu Xiang haoyu yin Hongyun Shi Yuhong Chao College of Earth Sciences Jilin UniversityChangchunJilin130061China Wuhan Institute of Technology WuhanHubei430074China Silvercorp Metals Inc. Chaoyang DistrictBeijing100027China Guinea Westfield Mining Company-Sarlu JinzhongShanxi031300China Orient Resources Ltd. RichmondBCV7E 1M8Canada Ganzhongnan Institute of Geology and Mineral Exploration NanchangJiangxi330002China

Through a detailed study of the abundances and spatial-temporal distribution patterns of Te,Bi,As,Se,Cu,Pb,Zn,Au,and Ag in the rock types of different geological epochs in the Dashuigou independent tellurium deposit,and in combination with other research findings of previous researchers in this area,the authors conclude as follows:Abundances of the main ore-forming elements Te,Bi,As,Se,Au,and Ag are not high in the regional geological background,generally lower or close to their respective crustal Clark values,but almost all altered country rocks contain high levels of ore-forming elements.This indicates that the deposit’s ore-forming elements do not come from the country rocks.This also indicates that the geological thermal events that cause alteration and mineralization originate from depths and may be related to mantle plumes.Considering the distribution pattern of these ore-forming elements in the ore bodies’hanging wall and footwall,the metallogenic mechanism may be as follows:Mineralization is not achieved through lateral secretion in the horizontal or near horizontal direction,but rather through the upward movement and emplacement of deep ore-forming elements driven by geological processes such as mantle plumes.In addition,the migration of deep ore-forming elements is not achieved through dispersed infiltration between overlying rock particles,but through non widespread concentrated penetrating channels.This type of channel is likely to be the expansion structures where faults from different directions intersect,or where linear faults intersect with circular structures.

关键词： Origin of ore-forming elements The Dashuigou independent tellurium deposit Trace element abundance The country rocks The mantle plume

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面向视频数据的多模态情感分析

计算机工程 2024年第6期50卷 218-227页

作者：武星殷浩宇姚骏峰李卫民钱权上海大学计算机工程与科学学院上海200444 中国船舶集团海舟系统技术有限公司上海200010

多模态情感分析旨在从文本、图像和音频数据中提取和整合语义信息,从而识别在线视频中说话者的情感状态。尽管多模态融合方案在此研究领域已取得一定成果,但是已有方法在处理模态间分布差异和关系知识的融合方面仍有欠缺,为此,提出一种... 详细信息

多模态情感分析旨在从文本、图像和音频数据中提取和整合语义信息,从而识别在线视频中说话者的情感状态。尽管多模态融合方案在此研究领域已取得一定成果,但是已有方法在处理模态间分布差异和关系知识的融合方面仍有欠缺,为此,提出一种多模态情感分析方法。设计一种多模态提示门(MPG)模块,其能够将非语言信息转换为融合文本上下文的提示,利用文本信息对非语言信号的噪声进行过滤,得到包含丰富语义信息的提示,以增强模态间的信息整合。此外,提出一种实例到标签的对比学习框架,在语义层面上区分隐空间中的不同标签以进一步优化模型输出。在3个大规模情感分析数据集上的实验结果表明,该方法的二分类精度相对次优模型提高了约0.7%,三分类精度提高了超过2.5%,达到0.671。该方法能够为将多模态情感分析引入用户画像、视频理解、AI面试等领域提供参考。

关键词：多模态情感分析语义信息多模态融合上下文表征对比学习

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修复材料与牙体组织力学适配性的研究进展

口腔疾病防治 2024年第4期32卷 315-320页

作者：殷皓宇刘晓秋孙宏晨吉林大学口腔医院吉林长春130021

牙齿作为发挥咀嚼功能的主要器官,可承受无数次功能性接触,这与它的力学性能和组织结构密切相关。牙釉质和牙本质的硬度较高,并且它们具有梯度化的结构,这使得牙齿既能承受咬合力,又不致轻易折裂。当牙体组织缺损时,往往需要全冠修复体... 详细信息

牙齿作为发挥咀嚼功能的主要器官,可承受无数次功能性接触,这与它的力学性能和组织结构密切相关。牙釉质和牙本质的硬度较高,并且它们具有梯度化的结构,这使得牙齿既能承受咬合力,又不致轻易折裂。当牙体组织缺损时,往往需要全冠修复体来恢复牙齿正常的形态与功能。常用的全冠修复材料有金属材料、陶瓷材料以及最近兴起的聚醚醚酮材料。金属材料在美学方面存在一定劣势,目前在临床上应用相对较少。不同组成成分的陶瓷材料在性能及美学上的表现有所差异,但弹性模量与硬度过高,在力学性能方面都超过了牙体组织,与牙体组织学力学性能不匹配。与此不同,聚醚醚酮材料的弹性模量低于牙体组织,与骨组织相似,但通过纤维增强等方式能够提高它的性能。当修复材料与牙体组织的力学性能并不完全适配时,两者之间的界面往往形成潜在的薄弱环节,最终影响修复的稳定性和长期效果。本文介绍了牙釉质和牙本质的力学性能以及相对应的结构特点,并在此基础上,分析现有修复材料的优势与局限性,进一步探究口腔全冠仿生设计的可能性。

关键词：牙釉质牙本质力学性能弹性模量断裂韧性冠修复聚醚醚酮碳纤维玻璃纤维羟基磷灰石

Frequency Regulation of VSC-MTDC System with Offshore Wind Farms

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Journal of Modern Power Systems and Clean Energy 2024年第1期12卷 275-286页

作者： haoyu Liu Chongru Liu North China Electric Power University Beijing 102206China

Frequency regulation of voltage source converter-based multi-terminal high-voltage direct current(VSC-MTDC)system with offshore wind farms enhances the frequency stability by compensating the power for a disturbed AC system.However,it is difficult to reasonably allocate frequency-regulation resources due to a lack of coordination mechanisms between wind farms and the MTDC system.Moreover,it is difficult for the frequency control of the wind farms to manage changes in wind speed;and the risk of wind-turbine stalls is high.Thus,based on the kinetic energy of wind turbines and the power margin of the converters,the frequency-regulation capability of wind turbines is evaluated,and a dynamic frequency-support scheme considering the real-time frequency-support capability of the wind turbines and system frequency evolution is proposed to improve the frequency-support performance.A power adaptation technique at variable wind speeds is developed;the active power in the frequency-support stage and restoration stage is switched according to the wind speed.A hierarchical zoning frequency-regulation scheme is designed to use the frequency-regulation resources of different links in the MTDC system with wind farms.The simulation results show that the novel frequency-regulation strategy maintains frequency stability with wind-speed changes and avoids multiple frequency dips.

关键词： Wind generation voltage source converter-based multi-terminal high-voltage direct current(VSC-MTDC) frequency regulation cooperative control adaptive control variable wind speed

When Glanzmann thrombasthenia encounters antithrombin defi ciency: how do we balance the risk and benefi t of antithrombotic therapy?

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World Journal of Emergency Medicine 2024年第1期15卷 67-69页

作者： Yu Wang Zhihao Liu haoyu Weng Jianping Li Department of Endocrinology Peking University First HospitalBeijing 100034China Department of Cardiology Peking University First HospitalBeijing 100034China Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education Health Science CenterPeking UniversityBeijing 100034China

Glanzmann’s thrombasthenia(GT)is an inherited autosomal recessive bleeding disorder,resulting from mutations in the ITGA2B and ITGB3 genes,that lead to a defect in the platelet membrane integrinαIIbβ3.[1]As integrinαIIbβ3 plays an important role in thrombus formation,the clinical manifestation of GT includes bleeding(mostly mucocutaneous)and purpura.For this reason,patients with GT are typically thought to be unlikely to suffer from thromboembolic incidents.Antithrombin is an anticoagulant that inhibits thrombin and is activated factor X and other serine proteases in the coagulation cascade.[2]Antithrombin deficiency is an autosomal dominant hereditary disease with an approximate prevalence of 1/500 in the overall population.[3]In contrast to the hemorrhagic tendency of GT,patients with antithrombin deficiency are at increased risk of thromboembolism,especially in the venous system.Herein,we describe a rare case of GT and antithrombin deficiency coexisting in a single patient.Rivaroxaban was used for the treatment of pulmonary embolism(PE)and deep vein thrombosis(DVT).

关键词： thrombin throm bleeding