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Contrastive Analysis of the Observation Data of Pressure and Temperature in Qingxian Weather Station

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Meteorological and Environmental Research 2013年第9期4卷 11-14页

作者： lijing Xu haichuan li Cangzhou Meteorological Bureau in Hebei Province

[Objective] The research aimed to contrast parallel observation data of pressure and temperature in Qingxian station. [Method] By u- sing pressure and temperature observed by automatic station and artificial station in Qingxian from January of 2009 to December of 2010, compara- tive analysis of observation data was conducted, and formation reason of difference value was discussed. E Resultl Monthly average pressure differ- ence between automatic station and artificial observation value was from -0.7 to 0.1 hPa. Difference value of monthly average maximum pressure was from -0.5 to 0.4 hPa, while difference value of monthly average minimum pressure was from -0.7 to 0.2 hPa. Difference value of monthly extremely maximum pressure was from -0.3 to 0.6 hPa, while difference value of monthly extremely minimum pressure was from -1.1 to 0.1 hPa. Monthly average temperature difference value was from -2.0 to 0 ℃. Difference value of monthly average maximum temperature was from -0.4 to 0 ℃, while difference value of monthly average minimum temperature was from -0.1 to 0.2 ℃. Difference value of monthly extremely maximum temperature was from -0.3 to 0.3 ℃, while difference value of monthly extremely minimum temperature was from -0.3 to 0.3 ℃. [ Conclusion] Generation reason of observation difference mainly included differences of observation instrument and principle, differences of data collection time and method, different sensor installation positions and environments, manual intervention and observation error.

关键词： Contrastive analysis Pressure Temperature Parallel observation Qingxian China

Analysis of Changing Characteristics of Evaporation in Cangzhou City in Recent 40 Years

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Meteorological and Environmental Research 2013年第10期4卷 6-8页

作者： haichuan li lijing Xu Cangzhou Meteorological Bureau of Hebei Province

[Objective] The study aimed to analyze the changing characteristics of evaporation in Cangzhou City in recent 40 years.[Method] Based the observation data of evaporation measured by small evaporation pans （with the caliber of 20 cm） from weather stations of Cangzhou dur- ing 1971 -2010, the monthly, seasonal, annual and decadal variation of evaporation were analyzed using conventional assessment methods. [Result] During 1971 -2010, monthly average evaporation in Cangzhou fluctuated within a year, and the maximum value appeared in June, while the minimum value appeared in January. Within a year, average evaporation was the highest in summer, and its variation was the greatest; it was the lowest and varied most slightly in winter. During 1971 -2010, evaporation in winter showed an increasing trend, while evaporation showed a de- creasing trend in spring and autumn, and there was no obvious change in evaporation in summer. Annual average evaporation in Cangzhou showed a decreasing trend from 1971 to 2010, and the highest evaporation reached 2 273.3 ram, appearing in 1972. The lowest evaporation was only 1 681.4 mm, appearing in 1990, and the difference between them reached 591.9 mm. Average evaporation in each decade showed a decrease trend, and the maximum value appeared in the 1980s （1 958.6 mm）, while the minimum value appeared in the first ten years of the 21st century （1 880.9 mm）. [ Conclusion] The research could provide theoretical references for studies on climate change in Cangzhou in future.

关键词： Cangzhou Evaporation Change characteristics China

Study on Color Information Degradation Induced byγ-ray Radiation in CMOS Cameras

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原子能科学技术 2023年第12期57卷 2337-2347页

作者： li Kunfang FENG Jie WANG haichuan li Yudong WEN lin li Zhenzhe GUO Qi Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of SciencesUrumqi 830011China Xinjiang Key Laboratory of Electronic Information Material and Device Urumqi 830011China University of Chinese Academy of Sciences Beijing 100049China Officers College of PAP Chengdu 610213China

Theγ-rays are widely and abundantly present in strong nuclear radiation environments,and when they act on the camera equipment used to obtain environmental visual information on nuclear robots,radiation effects will occur,which will degrade the performance of the camera system,reduce the imaging quality,and even cause catastrophic consequences.Color reducibility is an important index for evaluating the imaging quality of color camera,but its degradation mechanism in a nuclear radiation environment is still unclear.In this paper,theγ-ray irradiation experiments of CMOS cameras were carried out to analyse the degradation law of the camera’s color reducibility with cumulative irradiation and reveal the degradation mechanism of the color information of the CMOS camera underγ-ray irradiation.The results show that the spectral response of CMOS image sensor(CIS)and the spectral transmittance of lens after irradiation affect the values of a^(*)and b^(*)in the LAB color model.While the full well capacity(FWC)of CIS and transmittance of lens affect the value of L^(*)in the LAB color model,thus increase color difference and reduce brightness,the combined effect of color difference and brightness degradation will reduce the color reducibility of CMOS cameras.Therefore,the degradation of the color information of the CMOS camera afterγ-ray irradiation mainly comes from the changes in the FWC and spectral response of CIS,and the spectral transmittance of lens.

关键词： CMOS camera color reducibility γ-ray nuclear radiation

A Chaotic Local Search-Based Particle Swarm Optimizer for Large-Scale Complex Wind Farm Layout Optimization

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IEEE/CAA Journal of Automatica Sinica 2023年第5期10卷 1168-1180页

作者： Zhenyu Lei Shangce Gao Zhiming Zhang haichuan Yang Haotian li The authors are with the Faculty of Engineering University of ToyamaToyama 930-8555Japan

Wind energy has been widely applied in power generation to alleviate climate problems.The wind turbine layout of a wind farm is a primary factor of impacting power conversion efficiency due to the wake effect that reduces the power outputs of wind turbines located in downstream.Wind farm layout optimization(WFLO)aims to reduce the wake effect for maximizing the power outputs of the wind farm.Nevertheless,the wake effect among wind turbines increases significantly as the number of wind turbines increases in the wind farm,which severely affect power conversion efficiency.Conventional heuristic algorithms suffer from issues of low solution quality and local optimum for large-scale WFLO under complex wind scenarios.Thus,a chaotic local search-based genetic learning particle swarm optimizer(CGPSO)is proposed to optimize large-scale WFLO problems.CGPSO is tested on four larger-scale wind farms under four complex wind scenarios and compares with eight state-of-the-art algorithms.The experiment results indicate that CGPSO significantly outperforms its competitors in terms of performance,stability,and robustness.To be specific,a success and failure memories-based selection is proposed to choose a chaotic map for chaotic search local.It improves the solution quality.The parameter and search pattern of chaotic local search are also analyzed for WFLO problems.

关键词： Chaotic local search(CLS) evolutionary computation genetic learning particle swarm optimization(PSO) wake effect wind farm layout optimization(WFLO)

Capacity Configuration of Energy Storage Systems for Echelon Utilization Based on Accelerated life Test in Microgrids

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CSEE Journal of Power and Energy Systems 2023年第3期9卷 1139-1150页

作者： Ning Yan Xiangjun li Shaohua Ma haichuan Zhao Bo Zhang College of Electrical Engineering Shenyang University of TechnologyShenyang 110870China China Electric Power Research Institute Beijing 100192China

Retired power battery construction energy storage systems(ESSs)for echelon utilization can not only extend the remaining capacity value of the battery,and decrease environmental pollution,but also reduce the initial cost of energy storage systems.In this paper,an ESS constructed of retired power batteries for echelon utilization in microgrids(MGs)is considered.Firstly,considering the influence of different discharge depths on the battery life cycle,the correlation equation between the state of charge(SOC)and the state of health(SOH)is established.Secondly,the accelerated life test method,based on the inverse power law coefficient equation,is proposed,and it is used to evaluate the reliability of the ESS.Finally,according to the SOC characteristics,the dynamic security margin of the ESS is established.The life cycle cost,supply-demand balance and ESS balanced control are comprehensively considered,and the location and capacity of energy storage in MGs are determined.It is simulated using the IEEE-RTS 24 node system;the results show that the investment cost of the ESS is reduced and the operational life is prolonged.

关键词： ESS echelon utilization accelerated life test balanced control capacity configuration

毛果杨20S蛋白酶体基因家族成员预测及生物信息学分析

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分子植物育种 2024年第7期22卷 2154-2165页

作者：张亚飞曹丽娜樊昊驹严海川刘关君东北林业大学林学院哈尔滨150040

20S蛋白酶体是一类苏氨酸内肽酶,除了自身降解部分无序蛋白外,还可以与调节因子结合参与泛素依赖途径和非泛素依赖途径进行蛋白质的特异性降解,这对植物的正常生长至关重要。然而,关于毛果杨20S蛋白酶体基因家族成员数量及相关生物信息... 详细信息

20S蛋白酶体是一类苏氨酸内肽酶,除了自身降解部分无序蛋白外,还可以与调节因子结合参与泛素依赖途径和非泛素依赖途径进行蛋白质的特异性降解,这对植物的正常生长至关重要。然而,关于毛果杨20S蛋白酶体基因家族成员数量及相关生物信息学分析还未见报道,本研究以拟南芥(Arabidopsis thaliana)20S蛋白酶体基因家族为参考,在毛果杨(Populus trichocarpa)中共鉴定出33个假定的20S蛋白酶体基因家族成员。生物信息学分析结果表明,该家族基因所编码蛋白大多数为碱性蛋白及亲水性蛋白,主要存在于细胞质中;蛋白序列中存在多个保守的甘氨酸残基;系统进化树将酵母(Saccharomyces cerevisiae)、拟南芥、毛果杨的20S蛋白酶体家族基因分为4个亚类;组织特异性表达分析显示大多数20S蛋白酶体基因在根和茎中高表达。该研究鉴定了其他基因家族成员并进行生物信息学分析,为探索毛果杨中20S蛋白酶体参与的生理过程及相应作用机制提供理论依据,同时也可为其他林木20S蛋白酶体基因家族的研究提供参考。

关键词：毛果杨(Populus trichocarpa) 20S蛋白酶体生物信息学分析

Distribution,characteristics and daily fluctuations of microplastics throughout wastewater treatment plants with mixed domestic-industrial influents in Wuxi City,China

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Frontiers of Environmental Science & Engineering 2022年第1期16卷 107-115页

作者： Wei Shan Bingbing li haichuan Zhang Zhenghao Zhang Yan Wang Zhiyang Gao Ji li School of Environment and Civil Engineering Jiangnan UniversityWuxi 214122China Jiangsu Key Laboratory of Anaerobic Biotechnology Jiangnan UniversityWuxi 214122China Jiangsu College of Water Treatment Technology and Material Collaborative Innovation Centre Suzhou 215009China Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology Jiangnan UniversityWuxi 214122China Wuxi Puhui Environmental Protection Technology Co. Ltd.Wuxi 214122China Wuxi Hi-Tech Water Co. Ltd.Wuxi 214028Chin

In wastewater treatment plants(WWTPs),microplastics(MPs)are complex,especially with mixed domestic–industrial influents.Conventional random grab sampling can roughly depict the distribution and characteristics of MPs but can not accurately reflect their daily fluctuations.In this study,the concentration,shape,polymer type,size,and color of MPs were analyzed by micro-Raman spectroscopy(detection limit of 0.05 mm)throughout treatment stages of three mixed domestic–industrial WWTPs(W1,W2,and W3)in Wuxi City,China,and the daily fluctuations of MPs were also obtained by dense grab sampling within 24 h.For influent samples,the average MP concentration of 392.2 items/L in W1 with 10%industrial wastewater was much higher than those in W2(71.2 items/L with 10%industrial wastewater)and W3(38.3 items/L with 60%industrial wastewater).White polyethylene granules with a diameter less than 0.5 mm from plastic manufacturing were the most dominant MPs in the influent of W1,proving the key role of industrial sources in MPs pollution.In addition,the daily dense sampling results showed that MP concentration in W1 influent fluctuated widely between 29.1 items/L and 4617.6 items/L within a day.Finally,few MPs(less than 4.0 items/L)in these WWTPs effluents were attributed to the effective removal of wastewater treatment processes.Thus,further attention should be paid to regulating the primary sources of MPs.

关键词： Microplastic Wastewater treatment plant Mixed domestic-industrial influent Characteristic Daily fluctuation

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刀具涂层技术研究现状和发展趋势

工具技术 2024年第6期58卷 12-27页

作者：刘永龙石海川黄金成李银玲苏国胜齐鲁工业大学(山东省科学院)机械工程学院山东省机械设计研究院山东山水重工股份有限公司

随着刀具涂层制备技术的发展,刀具的应用领域和适用范围越来越广。涂层的应用大大降低了切削过程中的切削力和切削热,有效提高了刀具的切削效率和切削寿命。本文总结了刀具涂层的特点,阐述了刀具涂层的常用制备工艺及其优缺点,并对刀具... 详细信息

随着刀具涂层制备技术的发展,刀具的应用领域和适用范围越来越广。涂层的应用大大降低了切削过程中的切削力和切削热,有效提高了刀具的切削效率和切削寿命。本文总结了刀具涂层的特点,阐述了刀具涂层的常用制备工艺及其优缺点,并对刀具涂层的材料和结构进行了分析和总结,阐述了常见刀具涂层的优缺点及相应的研究进展。通过对优化刀具涂层性能方法进行总结,为后续刀具涂层的的研究方向提供了思路。

关键词：刀具涂层涂层材料涂层结构制备工艺发展前景

采用多丝正比室读出的屏栅电离室能量分辨研究

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原子能科学技术 2024年第1期58卷 225-230页

作者：尹小豪魏向伦黄鑫杰邹海川邱天力何周波杨远胜李志杰李蒙马朋杨贺润鲁辰桂胡荣江段利敏中国科学院近代物理研究所甘肃兰州730000 中国科学院大学核科学与技术学院北京100049 兰州大学核科学与技术学院甘肃兰州730000

搭建了一个基于多丝正比室读出的屏栅电离室探测器,使其保留屏栅电离室屏蔽特性的同时具备雪崩放大功能,通过在探测器内部对原初电离信号进行预放大,以提高信噪比,改善探测器的能量分辨率。利用241Am源详细测试了探测器在不同气压、沉... 详细信息

搭建了一个基于多丝正比室读出的屏栅电离室探测器,使其保留屏栅电离室屏蔽特性的同时具备雪崩放大功能,通过在探测器内部对原初电离信号进行预放大,以提高信噪比,改善探测器的能量分辨率。利用241Am源详细测试了探测器在不同气压、沉积能量、阳极丝径时能量分辨率及增益随阳极电压的变化关系。探测器最佳能量分辨对应的工作电压与入射粒子在漂移区中沉积的能量有关,能量沉积越小,对应的最佳工作电压越高,探测器的增益越大。对于5.486 MeV的241Am α粒子源的能量分辨率可达1.45%。

关键词：雪崩放大信噪比能量分辨率空间电荷效应