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实验用遥测信号源的设计与实现

装备指挥技术学院学报 2003年第6期14卷 71-74页

作者：林小江郭东文装备指挥技术学院测量控制系北京101416

为了满足遥测遥控专业本科生实验教学的需要,实验室经常要用到专用的遥测信号源,以提供帧结构可变的PCM遥测信号.在给出了一种自行研制的简易遥测信号源的基础上,对其基本设计思想、系统组成和工作原理等方面作了较为详细的介绍.实践表... 详细信息

为了满足遥测遥控专业本科生实验教学的需要,实验室经常要用到专用的遥测信号源,以提供帧结构可变的PCM遥测信号.在给出了一种自行研制的简易遥测信号源的基础上,对其基本设计思想、系统组成和工作原理等方面作了较为详细的介绍.实践表明:该设计与实现方法具有独特的创意,满足了教学需求.

关键词：遥测信号源 PCM 帧结构

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8路遥测信号采编器的设计与实现

装备指挥技术学院学报 2003年第1期14卷 74-77页

作者：林小江郭东文装备指挥技术学院测量控制系

在航天测控系统中,弹(星)及各种飞行器上的遥测信号采编器和交换子是遥测系统的重要组成部分.介绍了一种自行研制、适合实验教学使用的8路遥测信号采编器,并对其设计思想、系统组成和工作原理等作了较为详细的论述.

关键词：遥测信号采编器航天测控系统帖结构多路复用

Mechanism of the insecticidal effect of lambda-cyhalothrin loaded mesoporous silica nanoparticles with different sizes and surface modifications on Ostrinia furnacalis(Guenee)larvae

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2023年第5期24卷 465-472页

作者： Yanlong WANG Shuting xiao jiang XU Daohui lin Department of Environmental Science Zhejiang UniversityHangzhou 310058China Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control Zhejiang UniversityHangzhou 3i0058China

1Introduction Due to the easy loss and decomposition of traditional chemical pesticides,their repeated application in agriculture results in serious environmental risks to the surrounding environment and *** nanopesticides are attracting attention as a promising technology in agriculture due to their unique structure and effects(e.g.,nano-size scale,interfacial effects,and effective insecticidal time)(An et al.,2022).Their application could improve insecticidal efficacies,decrease usage amounts,and reduce the potential environmental impacts of chemical pesticides.

关键词： pesticides sizes loaded

Core shift limitation in investment casting process of hollow turbine blade

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Chinese Journal of Aeronautics 2024年第8期37卷 513-526页

作者： Kang CUI lin JING Ruisong jiang Longnv YU xiao GAO Automation and Software Engineering Shanxi UniversityTaiyuan 030006China Key Laboratory of High Performance Manufacturing for Aero Engine Ministry of Industry and Information TechnologySchool of Mechanical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China School of Mechanical Engineering Sichuan UniversityChengdu 610065China

The deviation in wall thickness caused by core shift during the investment casting process significantly impacts the strength and service life of hollow turbine *** address this issue,a core shift limitation method is developed in this ***,a shift model is established based on computational fluid dynamics and motion simulation to predict the movement of the ceramic core in investment casting ***,utilizing this model,an optimization method for fixturing layout inside the refractory ceramic shell is devised for the ceramic *** casting experiment demonstrates that by utilizing the optimized fixture layout,not only can core shift during the investment casting pouring process be effectively controlled,but also the maximum wall thickness error of the blade can be reduced by 42.02%.In addition,the core shift prediction is also validated,with a prediction error of less than 26.9%.

关键词： Hollow turbine blade Wall thickness Ceramic core Shift prediction Fixturing layout optimization

高强度船板表面花斑缺陷的形成机制及改进措施

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轧钢 2016年第3期33卷 73-76页

作者：郝小强王鑫王照玄陈代巧贾涛林小江重庆钢铁股份有限公司中厚板厂重庆401258 东北大学辽宁沈阳110819

基于金相分析和气泡试验,分析了高强度船板表面花斑缺陷的形貌特征和微观组织,研究了化学成分、轧制工艺对花斑缺陷的影响。结果表明:花斑缺陷的形成原因主要是二次氧化铁皮在轧制过程中被压入钢板基体,导致钢板表面形成厚度差异较大的... 详细信息

基于金相分析和气泡试验,分析了高强度船板表面花斑缺陷的形貌特征和微观组织,研究了化学成分、轧制工艺对花斑缺陷的影响。结果表明:花斑缺陷的形成原因主要是二次氧化铁皮在轧制过程中被压入钢板基体,导致钢板表面形成厚度差异较大的氧化铁皮,钢板抛丸后形成凹凸不平的斑状缺陷。通过降低钢中硅含量、优化高压水除鳞方式、低成本改进高压水除鳞系统,有效控制了高强度船板表面花斑缺陷。

关键词：高强度船板花斑缺陷氧化铁皮除鳞

Broadband Negative Refraction of Highly Squeezed Hyperbolic Polaritons in 2D Materials

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Research 2018年第1期2018卷 201-210页

作者： Jing jiang xiao lin Baile Zhang Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore Centre for Disruptive Photonic Technologies Nanyang Technological UniversitySingapore 637371Singapore

Negative refraction of highly squeezed polaritons is a fundamental building block for nanophotonics,since it can enable many unique applications,such as deep-subwavelength ***,the phenomenon of all-angle negative refraction of highly squeezed polaritons,such as graphene plasmons with their wavelength squeezed by a factor over 100 compared to free-space photons,was reported to work only within a narrow bandwidth(<1 THz).Demonstrating this phenomenon within a broad frequency range remains a challenge that is highly sought afer due to its importance for the manipulation of light at the extreme *** we show the broadband all-angle negative refraction of highly squeezed hyperbolic polaritons in 2D materials in the infrared regime,by utilizing the naturally hyperbolic 2D materials or the hyperbolic metasurfaces based on nanostructured 2D materials(e.g.,graphene).Te working bandwidth can vary from several tens of THz to over a hundred of THz by tuning the chemical potential of 2D materials.

关键词： hyperbolic refraction Hyperbolic

Fluid flow in large-capacity horizontal continuous casting tundishes

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International Journal of Minerals,Metallurgy and Materials 2010年第3期17卷 262-266页

作者： Shu-feng Yang Jing-she Li Jing jiang xiao-chuan lin lin lin School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China

The configuration of the tundish for a two-strand horizontal continuous caster was designed and optimized through water modeling. Three designs of the tundish were studied： the original tundish without any flow control devices, the tundish with a turbulence inhibitor at the bottom, and the tundish with an inlet launder and an inclined dam. The residence time, the location and size of the dead zone, and the fluid field pattern were investigated. At the same time, the asymmetry flow field and wavy inlet jet in the horizontal tundish were observed and the reasons for them were discussed. The results indicate that the mndish with an inlet launder and an inclined dam is the best of the three designs.

关键词： continuous casting fluid flow tundish water modeling

Evaluation of Ocean Data Assimilation in CAS-ESM-C:Constraining the SST Field

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Advances in Atmospheric Sciences 2016年第7期33卷 795-807页

作者： xiao DONG Renping lin jiang ZHU Zeting LU International Center for Climate and Environment Sciences Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029 University of Chinese Academy of Sciences Beijing 100049 Troop 61741 PLABeijing 100094

A weakly coupled assimilation system, in which SST observations are assimilated into a coupled climate model （CAS- ESM-C） through an ensemble optimal interpolation scheme, was established. This system is a useful tool for historical climate simulation, showing substantial advantages, including maintaining the atmospheric feedback, and keeping the oceanic tields from drifting far away from the observation, among others. During the coupled model integration, the bias of both surface and subsurface oceanic fields in the analysis can be reduced compared to unassimilated fields. Based on 30 model years of *** fiom the system, the climatology and imerannual variability of the climate system were evaluated. The results showed that the system can reasonably reproduce the climatological global precipitation and SLP, bul it still sutters from the double ITCZ problem. Besides, the ENSO footprint, which is revealed by ENSO-related surface air temperature, geopotential height and precipitation during El Nifio evolution, is basically reproduced by the system. The system can also simulate the observed SST-rainfall relationships well on both interannual and intraseasonal timescales in the western North Pacific region, in which atmospheric feedback is crucial for climate simulation.

关键词： ocean data assimilation ensemble optimal interpolation CAS-ESM-C ENSO footprint atmospheric feedback,air-sea interaction western North Pacific

Existence of Single and Multiple Solutions for First Order Periodic Boundary Value Problems

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Acta Mathematicae Applicatae Sinica 2007年第2期23卷 289-302页

作者： xiao-nlng lin Hong Wang Da-qing jiang School of Business Northeast Normal University Changchun 130024 China Department of Maths Qiqihar University Qiqihar 161006 China Department of Mathematics Northeast Normal University Changchun 130024 China

This paper is devoted to the study ofthe existence of single and multiple positive solutions for the first order boundary value problem x′= f（t, x）, x（0） = x（T）, where f ∈ C（[0,T] × R） . In addition, we apply our existence theorems to a class of nonlinear periodic boundary value problems with a singularity at the origin. Our proofs are based on a fixed point theorem in cones. Our results improve some recent results in the literatures.

关键词： Singular periodic boundary value problem single and multiple positive solution fixed point theorem in cones