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Characterization of the micro-interfacial interactions of heterogeneous particulate matter(fine-grained sediment and microplastics) with copper ions

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International Journal of Sediment Research 2023年第6期38卷 871-879页

作者： Jing Ou zhihe Chen Tung-Chiung Chang Civil Engineering School Sun Yat-sen University Engineering Research Center for Water Security Regulation in Southern China of Guangdong Province Department of Civil Engineering and Geomatics Cheng Shiu University

Particulate matter,such as sediment and microplastics(MPs),in aqueous environments has comparable micro-interfacial ***,the micro-interfacial characteristics of heterogeneous particulate matter are complex and are not fully *** this study,micro-interfacial kinetics and the interactions governing copper(Cu) ion adsorption to PP-sediment were investigated using microinterfacial characterization experiments and kinetic experiments for Cu ion absorption to sediment,polypropylene(PP),and PP-sediment *** results show that(1) a pseudo-second-order model can be used to accurately describe the micro-interfacial kinetics of Cu ion adsorption to PP-sediment,indicating that chemical adsorption dominates the *** Cu,the adsorption capacity,qe,of PP-sediment is approximately 0.4808 mg/g,between that of sediment and PP.(2) Film diffusion is the rate-controlling process in the early adsorption *** diffusion gradually becomes the controlling process as the film diffusion constant(kfd) decreases and the film diffusion model becomes less applicable,but intraparticle diffusion is weaker in the PP-sediment system than in the sedimentonly system.(3) The applicability of the intraparticle diffusion model for Cu ion adsorption to PP-sediment in the later stage of adsorption is between that of the sediment and PP ***,the heterogeneous aggregation of sediment and PP affects the micro-interfacial interactions of both types of particulate *** current study contributes to a better understanding of the microinterfacial interactions of heterogeneous particulate matter(such as fine-grained sediment and MPs)with heavy metal ions in aqueous environments.

关键词： Sediment Microplastic (MP) Micro-interfacial interaction Kinetics Heterogeneous aggregation

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错[牙合]畸形患者髁突位置及正畸治疗前后髁突位置变化的CBCT评估

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口腔疾病防治 2024年第2期32卷 149-154页

作者：潘逸华赵志河刘钧口腔疾病防治全国重点实验室、国家口腔医学研究中心、国家口腔疾病临床医学研究中心、四川大学华西口腔医学院正畸科四川成都610041

口颌系统的功能健康、稳定是口腔正畸治疗的基本目标之一。健康人群的下颌处于牙尖交错位(in-tercuspal position,ICP)时髁突位置基本位于关节窝的中央,颞下颌关节功能稳定。错[牙合]畸形患者由于正畸牙齿移动及咬合改变,可能发生颞下... 详细信息

口颌系统的功能健康、稳定是口腔正畸治疗的基本目标之一。健康人群的下颌处于牙尖交错位(in-tercuspal position,ICP)时髁突位置基本位于关节窝的中央,颞下颌关节功能稳定。错[牙合]畸形患者由于正畸牙齿移动及咬合改变,可能发生颞下颌关节的相关改建,特别是髁突位置的改变。传统的髁突位置的评估方法是通过架来转移下颌位置,然后在髁突位置测量仪上进行测量,但此方法得到的髁突位置变化缺乏一致性。近年来,锥形束CT(cone beam computed tomography,CBCT)成为正畸治疗检查的首选,CBCT可精准地测量关节间隙,确定髁突位置的改变。本文对髁突位置的CBCT评估及正畸治疗前后的错[牙合]畸形髁突位置变化的研究进行综述。文献复习结果表明,不同错[牙合]畸形患者的髁突位置存在差异,正畸治疗前后髁突位置也可能发生变化,使用CBCT可以较低的辐射剂量和更高的精确度评价错[牙合]畸形的髁突位置,有助于进一步研究错畸[牙合]形患者髁突位置变化的机制,并为患者治疗提供更准确、个性化的指导。

关键词：髁突位置锥形束CT 正畸治疗错[牙合]畸形颞下颌关节安氏分类垂直骨面型颞下颌关节紊乱综合征

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基于AI的车载“美育&美愈”虚拟空间交互设计研究

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艺术科技 2024年第4期37卷 96-99,103页

作者：刘了箬王之禾孙妍北京师范大学艺术与传媒学院北京师范大学历史学院北京100875 北京理工大学计算机学院北京100081

目的:面对“Z世代”大学生日益凸显的心理健康问题和新能源汽车智能座舱正朝着场景智能化、情感化服务、多模态融合交互等方向发展的趋势,将美育和艺术治疗应用于新能源汽车领域,开展车载虚拟空间交互设计研究,能够使新能源汽车为“Z世... 详细信息

目的:面对“Z世代”大学生日益凸显的心理健康问题和新能源汽车智能座舱正朝着场景智能化、情感化服务、多模态融合交互等方向发展的趋势,将美育和艺术治疗应用于新能源汽车领域,开展车载虚拟空间交互设计研究,能够使新能源汽车为“Z世代”大学生提供情绪价值,以提升其审美力、心理健康水平和幸福感。方法:文章采用SAS焦虑自评量表等调查问卷及访谈法收集数据,调查“Z世代”大学生情绪问题及其对新能源汽车的需求。应用唐纳德·诺曼基于反思层的情感化设计理论和凯伦·霍尔兹布拉特的情景化设计方法,以及艺术治疗、美育、人工智能等方法。关键技术与算法模型在考虑国外新能源汽车发展的理念和趋势以及国内实际情况的基础上,对情感识别、深度学习、多模态融合交互和情感化人工智能等技术进行合理的组合和应用。结果:基于调查数据进行客户画像和情景化故事板设计,在此基础上设计出基于人工智能的车载“美育&美愈”虚拟空间交互模型,以实现预期的研究目标。结论:调查发现,“Z世代”大学生存在各种消极情绪,平均焦虑指数高于正常值,而基于人工智能的车载“美育&美愈”虚拟空间交互模型有助于缓解其焦虑情绪,培养审美能力,具有应用价值和推广前景。研究不仅拓展了基于人工智能的美育与艺术治疗的应用领域,还为针对“Z世代”的新能源汽车交互设计提供了新的视角和实施路径。

关键词：艺术治疗美育虚拟空间人工智能车载交互设计

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Development of a Bird-like Flapping-wing Aerial Vehicle with Autonomous Take-off and Landing Capabilities

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Journal of Bionic Engineering 2021年第6期18卷 1291-1303页

作者： Dongfu Ma Bifeng Song zhihe Wang Jianlin Xuan Dong Xue School of Aeronautics Northwestern Polytechnical UniversityXi’an710072China Yangtze River Delta Research Institute of Northwestern Polytechnical University Taicang215400China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen518057China

The lack of autonomous take-off and landing capabilities of bird-like flapping-wing aerial vehicles(BFAVs)seriously restricts their further development and ***,combined with the current research results on the autonomous take-off and landing technology of unmanned aerial vehicles,four types of technologies are studied,including jumping take-off and landing technology,taxiing take-off and landing technology,gliding take-off and landing technology,and vertical take-off and landing(VTOL)*** on the analytic hierarchy process(AHP)-comprehensive evaluation method,a fuzzy comprehensive evaluation model for the autonomous take-off and landing scheme of a BFAV is established,and four schemes are evaluated *** results show that under the existing technical conditions,the hybrid layout VTOL scheme is the ***,the detailed design and development of the prototype of a BFAV with a four-rotor hybrid layout are carried out,and the vehicle performance is *** results prove that through the four-rotor hybrid layout design,the BFAV has good autonomous take-off and landing *** power consumption analysis shows that for a fixed-point reconnaissance mission,when the mission radius is less than 3.38 km,the VTOL type exhibits longer mission duration than the hand-launched type.

关键词： Bird-like flapping-wing aerial vehicle(BFAV) Autonomous take-off and landing Take-off mechanism Hybrid layout

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非遗柳编工艺在家居产品设计中的应用

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家具 2024年第2期45卷 44-48页

作者：于娜王军刘峰徐治合南京林业大学家居与工业设计学院南京210037 安徽宜飞思工业设计有限公司阜阳236000 阜阳市轻工工艺品进出口企业协会阜阳236000

柳编工艺作为非物质文化遗产之一,象征着国家和民族基因,随着市场日新月异的发展及消费者对绿色宜家产品的多样性追求,柳编工艺在家居产品设计中的应用更为广泛。通过调研柳编工艺,分析柳编家居产品应用现状及产品类型,总结柳编家居产... 详细信息

柳编工艺作为非物质文化遗产之一,象征着国家和民族基因,随着市场日新月异的发展及消费者对绿色宜家产品的多样性追求,柳编工艺在家居产品设计中的应用更为广泛。通过调研柳编工艺,分析柳编家居产品应用现状及产品类型,总结柳编家居产品特点及设计应用,提出柳编家居产品创新应用思路,并以此为设计要点进行柳编工艺在家居产品中的创新设计,实现柳编产品在造型风格上的突破,拓宽柳编应用范围,为柳编家居产品在当今市场中的活态传承与发展提供借鉴。

关键词：非遗文化柳编工艺家居设计设计应用

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Recommending Authors and Papers Based on ACTTM Community and Bilayer Citation Network

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China Communications 2018年第7期15卷 111-130页

作者： Meilian Lu zhihe Qu Mengxing Wang Zhen Qin State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

Citation network is often used for academic recommendation. However, it is difficult to achieve high recommendation accuracy and low time complexity because it is often very large and sparse and different citations have different purposes. What's more, some citations include unreasonable information, such as in case of intentional self-citation. To improve the accuracy of citation network-based academic recommendation and reduce the time complexity, we propose an academic recommendation method for recommending authors and papers. In which, an author-paper bilayer citation network is built, then an enhanced topic model, Author Community Topic Time Model(ACTTM) is proposed to detect high quality author communities in the author layer, and a set of attributes are proposed to comprehensively depict the author/paper nodes in the bilayer citation network. Experimental results prove that the proposed ACTTM can detect high quality author communities and facilitate low time complexity, and the proposed academic recommendation method can effectively improve the recommendation accuracy.

关键词： academic recommendation topic model community detection bilayer citation network

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PACKINGS OF THE COMPLETE DIRECTED GRAPH WITH m-CIRCUITS

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Applied Mathematics(A Journal of Chinese Universities) 1998年第4期13卷 463-472页

作者： LIANG zhihe AND KANG QINGDE Department of Mathematics Hebei Normal University Shijiazhuang

A packing of the complete directed symmetric graph DK v with m circuits, denoted by ( v,m) DCP, is defined to be a family of arc disjoint m circuits of DK v such that any one arc of DK v \ occurs in at most one m circuit. The packing number P(v,m) is the maximum number of m circuits in such a packing. The packing problem is to determine the value P(v,m) for every integer v≥m. In this paper, the problem is reduced to the case m+6≤v≤2m- 4m-3+12 , for any fixed even integer m≥4 . In particular, the values of P(v,m) are completely determined for m=12 , 14 and 16.

关键词： Complete directed graph m-circuit packing packing number

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Effect of Vortex Stirring on the Dilution of Copper Slag

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Journal of Wuhan University of Technology(Materials Science) 2022年第4期37卷 699-706页

作者： ZHANG Baojing ZHANG Tingan DOU zhihe ZHANG Dongliang School of Materials Science and Physics China University of Mining and TechnologyXuzhou 221l6China School of Metallurgy Northeastern UniversityShenyang 110819China

In order to solve the problem that the vulcanizing agent utilization rate is low and the dilution effect of copper slag is poor,the vortex stirring dilution method was used to improve the conditions of the dilution kinetics and copper *** water model was used to simulate the effect of copper slag *** the premise of keeping the Reynolds number consistent,silicone oil and glass beads were used instead of copper slag and vulcanizing *** on the relationship between voltage and concentration,the PC6D dual-channel particle concentration measuring instrument was used to study the stirring speed and the insertion depth of the stirring paddle in model experiments,and the suitable conditions were speed 250 rpm and insertion depth 70 *** fire dilution of copper slag was done under the *** stirring and sedimentation,the Fe_(3)O_(4) in slag decreased from 22.58% to 4.65%,and the copper content of the slag decreased from 2.94% to 0.34%.The copper recovery was 88.44%.

关键词： copper slag dilution vortex stirring water model the PC6D dual-channel particle concentration measuring instrument

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Low-noise InGaAs/InP single-photon detector with widely tunable repetition rates

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Photonics Research 2019年第3期7卷 I0001-I0006页

作者： YAN LIANG QILAI FEI zhihe LIU KUN HUANG HEPING ZENG Shanghai Key Laboratory of Modern Optical Systems Engineering Research Center of Optical Instruments and Systems Ministry of EducationSchool of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology State Key Laboratory of Precision Spectroscopy East China Normal University

InGaAs/InP avalanche photodiodes typically work in the gated Geiger mode to achieve near-infrared singlephoton detection. By using ultrashort gates and combining with the robust spike-canceling technique that consists of the capacitance-balancing and low-pass filtering technique, we demonstrate an InGaAs/InP single-photon detector(SPD) with widely tunable repetition rates in this paper. The operation frequency could be tuned conveniently from 100 MHz to 1.25 GHz with the SPD's performance measured to maintain good performance, making it quite suitable for quantum key distribution, laser ranging, and optical time domain reflectometry. Furthermore,the SPD exhibited extremely low-noise characteristics. The detection efficiency of this SPD could reach 20% with the dark count rate of 2.5 × 10^(-6)∕gate and after-pulse probability of 4.1% at 1 GHz.

关键词： InGaAs/InP single-photon detector achieve near-infrared singlephoton detection robust spike-canceling technique

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精索静脉曲张不育症的病因及中西医治疗研究进展

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实用中医内科杂志 2024年第6期38卷 127-129页

作者：罗志合周波王建宏宁夏医科大学中医学院宁夏银川750004 宁夏医科大学宁夏区域高发病中西医结合防治研究重点实验室宁夏银川750004 宁夏回族自治区中医医院暨中医研究院宁夏银川750021

精索静脉曲张是导致男性不育的最主要的原因。随着本病发病率逐年增加,越来越多人关注自身的健康,许多医家致力于精索静脉曲张所致不育症发病机制的研究。现查阅相关文献,文章主要从中西医方面综述精索静脉曲张引起男性不育的可能机制... 详细信息

精索静脉曲张是导致男性不育的最主要的原因。随着本病发病率逐年增加,越来越多人关注自身的健康,许多医家致力于精索静脉曲张所致不育症发病机制的研究。现查阅相关文献,文章主要从中西医方面综述精索静脉曲张引起男性不育的可能机制及治疗,是以期为临床治疗提供理论依据和基础,治疗疾病的基础上提高患者生活质量及家庭幸福指数。

关键词：不育瘀血肾虚精液睾丸

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