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High-performance,low-power,and flexible ultraviolet photodetector based on crossed ZnO microwires p-n homojunction

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Photonics Research 2024年第4期12卷 648-662页

作者： SHULIN SHA KAI TANG MAOSHENG LIU PENG WAN chenyang zhu DANING SHI CAIXIA KAN MINGMING JIANG College of Physics MIIT Key Laboratory of Aerospace Information Materials and PhysicsKey Laboratory for Intelligent Nano Materials and DevicesNanjing University of Aeronautics and AstronauticsNanjing 211106China

Low-power, flexible, and integrated photodetectors have attracted increasing attention due to their potential applications of photosensing, astronomy, communications, wearable electronics, etc. Herein, the samples of ZnO microwires having p-type(Sb-doped ZnO, ZnO:Sb) and n-type(Ga-doped ZnO, ZnO:Ga) conduction properties were synthesized individually. Sequentially, a p-n homojunction vertical structure photodiode involving a single ZnO:Sb microwire crossed with a ZnO:Ga microwire, which can detect ultraviolet light signals, was constructed.

关键词： power ultraviolet conduction

6DOF pose estimation of a 3D rigid object based on edge-enhanced point pair features

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Computational Visual Media 2024年第1期10卷 61-77页

作者： Chenyi Liu Fei Chen Lu Deng Renjiao Yi Lintao Zheng chenyang zhu Jia Wang Kai Xu College of Computing National University of Defense TechnologyChangsha410073China Department of Spine Surgery the Second Xiangya HospitalCentral South UniversityChangsha410011China Clinical Nursing Teaching and Research Section the Second Xiangya HospitalChangsha410011China College of Meteorology and Oceanography National University of Defense TechnologyChangsha410073China Beijing Institute of Tracking and Communication Technology Beijing100094China

The point pair feature(PPF)is widely used for 6D pose *** this paper,we propose an efficient 6D pose estimation method based on the PPF *** introduce a well-targeted down-sampling strategy that focuses on edge areas for efficient feature extraction for complex geometry.A pose hypothesis validation approach is proposed to resolve ambiguity due to symmetry by calculating the edge matching *** perform evaluations on two challenging datasets and one real-world collected dataset,demonstrating the superiority of our method for pose estimation for geometrically complex,occluded,symmetrical *** further validate our method by applying it to simulated punctures.

关键词： point pair feature(PPF) pose estimation object recognition 3D point cloud

Effect of phosphorus content on interfacial heat transfer and film deposition behavior during the high-temperature simulation of strip casting

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 1016-1025页

作者： Wanlin Wang Cheng Lu Liang Hao Jie Zeng Lejun Zhou Xinyuan Liu Xia Li chenyang zhu School of Metallurgy and Environment Central South UniversityChangsha 410083China National Center for International Research of Clean Metallurgy Central South UniversityChangsha 410083China Institute of Research of Iron and Steel ShasteelJiangsu ProvinceZhangjiagang 215625China

The interfacial wettability and heat transfer behavior are crucial in the strip casting of high phosphorus-containing steel.A hightemperature simulation of strip casting was conducted using the droplet solidification technique with the aims to reveal the effects of phosphorus content on interfacial wettability,deposited film,and interfacial heat transfer *** showed that when the phosphorus content increased from 0.014wt%to 0.406wt%,the mushy zone enlarged,the complete solidification temperature delayed from1518.3 to 1459.4℃,the final contact angle decreased from 118.4°to 102.8°,indicating improved interfacial contact,and the maximum heat flux increased from 6.9 to 9.2 MW/*** the phosphorus content from 0.081wt%to 0.406wt%also accelerated the film deposition rate from 1.57 to 1.73μm per test,resulting in a thickened naturally deposited film with increased thermal resistance that advanced the transition point of heat transfer from the fifth experiment to the third experiment.

关键词： strip casting interfacial heat transfer interfacial wettability naturally deposited film phosphorus content

气相二氧化硅/三元无机水合盐定型相变材料的制备及性能表征

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化工新型材料 2024年第5期52卷 245-248,254页

作者：肖力光朱晨阳吉林建筑大学材料科学与工程学院长春130118

以气相二氧化硅作为多孔吸附材料,对十二水磷酸氢二钠/五水偏硅酸钠/十水碳酸钠低共熔相变材料进行封装,通过控制气相二氧化硅含量,制备出不同吸附量的气相二氧化硅/三元无机水合盐定型相变材料。通过差示扫描量热仪、扫描电子显微镜、... 详细信息

以气相二氧化硅作为多孔吸附材料,对十二水磷酸氢二钠/五水偏硅酸钠/十水碳酸钠低共熔相变材料进行封装,通过控制气相二氧化硅含量,制备出不同吸附量的气相二氧化硅/三元无机水合盐定型相变材料。通过差示扫描量热仪、扫描电子显微镜、傅里叶变换红外光谱仪、X射线衍射仪和热重分析仪等多种测试手段,对定型相变材料的性能和结构进行表征。研究结果表明:气相二氧化硅的最佳含量为25%(质量分数),该条件下定型相变材料相变焓为95.96J/g;三元无机水合盐相变材料与气相二氧化硅只是单纯的物理混合,并未发生化学反应产生新物质,制备的定型相变热稳定性较好。

关键词：相变蓄能气相二氧化硅定型相变材料低碳节能

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油气集输工艺流程的优化措施

化工管理 2024年第5期 147-149页

作者：朱晨阳中国石油工程建设有限公司北京设计分公司北京100085

文章从改进油气集输设备配置、优化操作参数和引入先进的自动化控制系统等方面,阐述了油气集输工艺流程优化的重要性,来证明科学的油气集输工艺流程优化有助于提高生产效率、降低成本等实际的应用效果,并提出了油气集输工艺流程优化的... 详细信息

文章从改进油气集输设备配置、优化操作参数和引入先进的自动化控制系统等方面,阐述了油气集输工艺流程优化的重要性,来证明科学的油气集输工艺流程优化有助于提高生产效率、降低成本等实际的应用效果,并提出了油气集输工艺流程优化的有效措施。

关键词：油气集输工艺流程流程优化石油化工

基于“血-脉-心络”共病理论探讨虫类药在冠状动脉微血管功能障碍的应用

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中国实验方剂学杂志 2024年第1期30卷 176-185页

作者：朱晨阳胡骏刘兰椿屈培荣王阶中国中医科学院广安门医院北京100053

冠状动脉微血管功能障碍(CMD)是导致心肌缺血和非阻塞性冠状动脉缺血症状的重要原因之一,然而目前对CMD尚缺乏有效的检查手段和靶向性的治疗策略。中医的“血-脉-心络”共病理论贯穿于CMD的发展全过程,启示在其临床诊疗中,治血、治脉和... 详细信息

冠状动脉微血管功能障碍(CMD)是导致心肌缺血和非阻塞性冠状动脉缺血症状的重要原因之一,然而目前对CMD尚缺乏有效的检查手段和靶向性的治疗策略。中医的“血-脉-心络”共病理论贯穿于CMD的发展全过程,启示在其临床诊疗中,治血、治脉和治心络均不可偏废,而虫类药以化瘀通络、搜风解痉等功效见长,具有治疗CMD的潜在价值。但目前未见对虫类药治疗CMD的研究与总结,据此,该文以中医“血-脉-心络”共病理论为切入点,将CMD病机演变分为5个环节,即病起在血(血液成分、血液流变学改变)、病进在脉(粥样斑块形成;粥样斑块不稳定)、病发在心络(微血管内皮损伤;微血管收缩、痉挛)、病末在心络(微血管重塑)、能量代谢障碍贯穿全程,以探讨CMD的发病机制及其演变规律。同时,结合虫类药的现代药理研究,从祛痰化瘀以通络、搜风解痉以止痛、以毒攻毒以散结、通补心络以荣心等4个方面阐述虫类药在CMD临床治疗中的应用,以期为中医药治疗CMD提供理论依据,拓宽用药思路,更好地提高临床疗效。

关键词：血脉心络冠状动脉微血管功能障碍血液流变学能量代谢虫类药

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长三角区域司法案件类案检索机制的实践路径

宁波大学学报（人文科学版） 2024年第3期37卷 120-132页

作者：朱晨阳洪冬英华东政法大学法律学院上海市长宁区人民法院不详

长三角一体化的国家战略要求区域适法统一,为一体化发展提供优质司法保障。类案检索机制能够有效推动适法统一,但需平衡机制效用与审判效率,尊重法官独立行使审判权,避免严格繁琐的检索规范使类案检索流于形式。应当进行类案检索的案件... 详细信息

长三角一体化的国家战略要求区域适法统一,为一体化发展提供优质司法保障。类案检索机制能够有效推动适法统一,但需平衡机制效用与审判效率,尊重法官独立行使审判权,避免严格繁琐的检索规范使类案检索流于形式。应当进行类案检索的案件以裁判规则缺失或不明为限,“应当”指向检索程序的启动,而非检索结果的采纳,不能仅以裁判结果的正确性判断类案参考的准确性。检索初期,可以通过案由、关键词、裁判依据等识别类案,进而根据一定顺位筛选可参考的类案。需撰写类案检索报告供案件评议参考的,报告格式可以相对统一,这样可提高撰写及参阅效率,并便于数字化归入检索平台,延伸检索成果的司法效用。

关键词：长三角司法案件类案检索类案类判适法统一

Twin-roll strip casting of advanced metallic materials

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Science China(Technological Sciences) 2022年第3期65卷 493-518页

作者： zhu chenyang ZENG Jie WANG WanLin School of Metallurgy and Environment Central South UniversityChangsha 410083China National Center for International Research of Clean Metallurgy Central South UniversityChangsha 410083China Department of Materials Science and Engineering Faculty of EngineeringNational University of SingaporeSingapore 117576Singapore

Metallic materials have historic and served as critical enablers of human progress,wealth,and wellbeing over ***,the global demand for the development of environment-friendly and energy-saving technology has been increasing,with the aim to support the sustainability of metallic ***-roll strip casting(TRC)is one of the most cutting-edge technologies and a near-net-shape manufacturing method in the steel industry,which conforms to the green fabrication trend of next-generation high-performance metallic *** utilizing the dominant characteristics of sub-rapid solidification,and integration of solidification,solid-state transformation,and deformation;TRC has become a meaningful way to deal with the most challenging issues in the processing of metallic materials,and made a significant contribution to materials ***,we review the TRC process of various metallic materials,including plain carbon steels,stainless steels,Fe-Si electrical steels,high-strength steels,clad steels,aluminum alloys,magnesium alloys,metallic glasses,and so *** paper offers an outlook of future opportunities for various advanced metallic materials development through the TRC process,and inspires more in-depth research.

关键词： twin-roll strip casting metallic materials steels alloys

Learning practically feasible policies for online 3D bin packing

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Science China(Information Sciences) 2022年第1期65卷 175-191页

作者： Hang ZHAO chenyang zhu Xin XU Hui HUANG Kai XU School of Computer Science National University of Defense Technology College of Intelligence Science and Technology National University of Defense Technology College of Computer Science and Software Engineering Shenzhen University

We tackle the online 3 D bin packing problem(3 D-BPP), a challenging yet practically useful variant of the classical bin packing problem. In this problem, the items are delivered to the agent without informing the full sequence information. The agent must directly pack these items into the target bin stably without changing their arrival order, and no further adjustment is permitted. Online 3 D-BPP can be naturally formulated as a Markov decision process(MDP). We adopt deep reinforcement learning, in particular, the on-policy actor-critic framework, to solve this MDP with constrained action space. To learn a practically feasible packing policy, we propose three critical designs. First, we propose an online analysis of packing stability based on a novel stacking tree. It attains a high analysis accuracy while reducing the computational complexity from O(N2) to O(N log N), making it especially suited for reinforcement learning training. Second, we propose a decoupled packing policy learning for different dimensions of placement which enables high-resolution spatial discretization and hence high packing precision. Third, we introduce a reward function that dictates the robot to place items in a far-to-near order and therefore simplifies the collision avoidance in movement planning of the robotic arm. Furthermore, we provide a comprehensive discussion on several key implemental issues. The extensive evaluation demonstrates that our learned policy outperforms the state-of-the-art methods significantly and is practically usable for real-world applications.

关键词： bin packing problem online 3D-BPP reinforcement learning