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Local Preserving Graphs Using Intra-Class Competitive Representation for Dimensionality Reduction of Hyperspectral Image

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Journal of Beijing Institute of Technology 2021年第2期30卷 139-158页

作者： Zhen Ye shihao Shi Tao Sun lin Bai School of Electronics and Control Engineering Chang’an UniversityXi’an 710064China

As a key technique in hyperspectral image pre-processing,dimensionality reduction has received a lot of ***,most of the graph-based dimensionality reduction methods only consider a single structure in the data and ignore the interfusion of multiple *** this paper,we propose two methods for combining intra-class competition for locally preserved graphs by constructing a new dictionary containing neighbourhood *** two methods explore local information into the collaborative graph through competing constraints,thus effectively improving the overcrowded distribution of intra-class coefficients in the collaborative graph and enhancing the discriminative power of the *** classifying four benchmark hyperspectral data,the proposed methods are proved to be superior to several advanced algorithms,even under small-sample-size conditions.

关键词： intra-class competition graph construction hyperspectral image dimensionality reduction

基于Veristand的飞机动力系统硬件在环测试平台设计

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自动化与仪表 2024年第5期39卷 6-9页

作者：魏士皓刘妍魏林童彦上海飞机制造有限公司上海201324

针对飞机总装测试自动化程度不高、测试效率较低等问题,设计了一套飞机动力系统硬件在环测试系统。基于功能需求,该系统下位机采用搭载NI-linuxRT系统的实时仿真机,实现了硬件资源配置和信号传输;上位机以NI Veristand软件为基础,完成... 详细信息

针对飞机总装测试自动化程度不高、测试效率较低等问题,设计了一套飞机动力系统硬件在环测试系统。基于功能需求,该系统下位机采用搭载NI-linuxRT系统的实时仿真机,实现了硬件资源配置和信号传输;上位机以NI Veristand软件为基础,完成了测试用例开发与管理、实时模型开发与调用、设备驱动管理等任务,最终实现了及动力系统的实时在线仿真模拟。该系统为后续方便快捷完成地面功能试验测试,提高测试效率,提升测试自动化水平提供了研究方向。

关键词： Veristand 动力系统硬件在环地面功能试验测试

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废旧光伏组件绿色回收研究综述

湖北大学学报（自然科学版） 2024年第4期46卷 591-600页

作者：林俍佑何世豪王贤保功能材料绿色制备与应用教育部重点实验室(湖北大学) 湖北武汉430062 高分子材料湖北省重点实验室(湖北大学) 湖北武汉430062 湖北大学材料科学与工程学院湖北武汉430062

光伏发电组件是太阳能利用过程中重要的组成部分,晶硅光伏组件市场占比率高,预计在2030年迎来报废密集期,废旧光伏组件如能得到妥善回收处理将对经济发展、环境友好产生极大促进作用。本综述阐明硅基光伏组件的回收背景,论述其市场前景... 详细信息

光伏发电组件是太阳能利用过程中重要的组成部分,晶硅光伏组件市场占比率高,预计在2030年迎来报废密集期,废旧光伏组件如能得到妥善回收处理将对经济发展、环境友好产生极大促进作用。本综述阐明硅基光伏组件的回收背景,论述其市场前景,并系统介绍光伏组件各部分材料成分与具体作用,深入剖析废旧组件拆解、分离、回收三大流程工艺,重点分析了溶剂、热、机械分离技术的现状和优缺点,介绍了回收的主流方法;同时关注废旧光伏组件在回收过程中存在的主要技术难点,展望了废旧光伏组件回收研究需要关注的重点,为发展废旧光伏组件高效绿色回收技术提供参考。

关键词：晶硅废旧光伏组件绿色回收回收技术回收成本

Spatio-temporal variations in ecological spaces and their ecological carrying status in China's mega-urban agglomerations

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Journal of Geographical Sciences 2022年第9期32卷 1683-1704页

作者： WANG shihao HUANG lin XU Xinliang LI Jiahui State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchCASBeijing100101China University of Chinese Academy of Sciences Beijing100049China Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchCASBeijing100101China

The rapid expansion of China’s urban agglomerations in recent decades has resulted in over-occupied ecological spaces and increased ecological pressure that are restricting healthy regional *** paper examines the structure and characteristics of distribution of“production-living-ecological”spaces in five mega-urban agglomerations in China:Beijing-Tianjin-Hebei(BTH),the Yangtze River Delta(YRD),Guangdong-Hong Kong-Macao Greater Bay Area(GBA),Chengdu-Chongqing(CY),and the middle reaches of the Yangtze River(MYR).We analyze spatial and temporal variations in the ecological spaces and factors influencing them from 1990 to 2020,and examine the comprehensive ecological carrying capacity and status of ecological spaces in the past 30 years based on the available water resources,regulation of water and air quality,and leisure and *** results show the following:(1)Urban agglomerations in different stages of formation and development represent varying area ratios of“ecological-production-living”*** modes of expansion and evolution of the living spaces are dominated by multi-center combinations as well as the spatial structure of ecological spaces,including barrier,compact,discrete,and fully enveloping spaces.(2)From 1990 to 2020,the area occupied by living spaces in urban agglomerations continued to increase significantly while that of spaces for ecological production *** in the GBA,ecological spaces have exhibited a trend of increase in area,especially in the past 10 *** area ratios and spatio-temporal variations in the“production-living-ecological”spaces indicate that the main functions of production and ecological spaces in mega-urban agglomerations have shifted from supply to regulation and culture,and reflect the transition from rapid urbanization to sustainable urbanization in China.(3)The comprehensive ecological carrying capacities of 78.6%,73.1%,54.5%,56.3%,and 25.8%of cities in BTH,YRD,GBA,CY and MYR are severely ove

关键词： mega-urban agglomerations “production-living-ecological”spaces ecological spaces ecological carrying capacity spatial and temporal variations

Rare-earth ions coordination enhanced ratiometric fluorescent sensing platform for quantitative visual analysis of antibiotic residues in real samples

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Chinese Chemical Letters 2023年第6期34卷 278-281页

作者： shihao Xu lingfei Li Dan lin Liang Yang Zhenyang Wang Changlong Jiang Institute of Solid State Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Key Laboratory of Photovoltaic and Energy Conservation Materials Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China School of Chemistry and Chemical Engineering Hefei University of TechnologyHefei 230009China

Levofloxacin(LVFX)as a representative drug of quinolone antibiotics is widely used in clinical,and its residues enriched in water bodies and sideline products seriously damage human *** is imperative to develop a real-time/on-site sensing method for monitoring residual ***,we report a portable sensing platform by utilizing a composite fluorescent nanoprobe constructed by the cerium ions(Ce^(3+))coordination functionalized Cd Te quantum dots(QDs)for the visual and quantitative detection of LVFX *** fluorescent probe provides a distinct color variation from red to green,which shows a good linear relationship to LVFX residues concentrations in the range of 0-6.0μmol/L with a sensitive limit of detection(LOD)of 16.3 nmol/*** smartphone platform with Color Analyzer App installed,which could accomplish quantified detection of LVFX in water,milk,and raw pork with a LOD of 27.9nmol/*** facile sensing method we proposed realizes rapid visualization of antibiotics residual in the environment and provides a practical application pathway in food safety and human health.

关键词： Rare-earth ions Ratiometric fluorescence probe Smartphone sensing platform Quantitative detection Levofloxacin

特瑞普利单抗在膀胱肿瘤综合治疗中的疗效和安全性分析

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重庆医科大学学报 2024年第6期49卷 740-744页

作者：粟麟许巧万士豪张洪瑜陈禹杰何云锋重庆医科大学附属第一医院泌尿外科重庆400016

目的:评价真实世界中特瑞普利单抗在膀胱尿路上皮癌(bladder urothelial carcinoma,UBC)及特殊类型膀胱肿瘤(atypical bladder tumor,ABT)综合治疗中的疗效及相关安全性。方法:纳入46例手术+特瑞普利单抗综合治疗的膀胱肿瘤患者(32例尿... 详细信息

目的:评价真实世界中特瑞普利单抗在膀胱尿路上皮癌(bladder urothelial carcinoma,UBC)及特殊类型膀胱肿瘤(atypical bladder tumor,ABT)综合治疗中的疗效及相关安全性。方法:纳入46例手术+特瑞普利单抗综合治疗的膀胱肿瘤患者(32例尿路上皮癌、14例特殊类型肿瘤)的资料,统计分析治疗期间出现的治疗相关不良反应发生率及疗效评估。结果:分组:尿路上皮癌患者32例,特殊类型膀胱肿瘤14例,在使用特瑞普利单抗的综合治疗中患者整体复发率为15.2%,46例患者常见不良反应包括皮肤瘙痒(17.4%),甲状腺功能异常(15.2%),食欲下降(10.9%)等,其中3~4级不良反应发生有14例,占总不良反应的36.8%。结论:特瑞普利单抗在UBC和ABT的综合治疗中的疗效显著,整体安全可控,但应警惕不良反应。

关键词：特瑞普利单抗综合治疗膀胱尿路上皮癌特殊类型膀胱肿瘤不良反应

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井下硐室柴油蒸气泄漏扩散规律

煤矿安全 2024年第5期55卷 140-150页

作者：李世豪白纪成宋双林姜文忠梁运涛林琦煤炭科学研究总院北京100013 中煤科工集团沈阳研究院有限公司辽宁抚顺113122 煤矿安全技术国家重点实验室辽宁抚顺113122 平顶山天安煤业股份有限公司河南平顶山467000 安徽工业大学能源与环境学院安徽马鞍山243002

随着柴油单轨吊和无轨胶轮车等辅助运输装置在煤矿井下的推广应用,在井下运输和加注柴油的频率越来越高,运输和加注柴油过程中泄漏的柴油和挥发的柴油蒸气会污染井下空气环境,严重时还可能造成燃烧与爆炸事故。针对煤矿井下柴油运输及... 详细信息

随着柴油单轨吊和无轨胶轮车等辅助运输装置在煤矿井下的推广应用,在井下运输和加注柴油的频率越来越高,运输和加注柴油过程中泄漏的柴油和挥发的柴油蒸气会污染井下空气环境,严重时还可能造成燃烧与爆炸事故。针对煤矿井下柴油运输及加注过程的环境特点,构建了井下流态环境泄漏柴油蒸发扩散模型,建立了基于风速和蒸发速率的柴油蒸气体积分数峰值预测方法,研究了不同环境风速及柴油蒸发速率条件下的柴油蒸气体积分数分布规律,提出了煤矿井下柴油蒸气-瓦斯混合环境防火防爆措施。结果表明:在井下流态环境中,柴油蒸气扩散呈现出明显的沉降、分层及分段特性,风流对柴油蒸气扩散具有促进作用;当柴油泄漏后20s时,蒸气可扩散至距泄漏点下风侧10 m;当柴油泄漏后40 s时,蒸气可扩散至距泄漏点下风侧15 m;当柴油泄漏后70 s时,硐室中各监测点柴油蒸气体积分数达到峰值并趋于稳定;柴油蒸气体积分数峰值点位于泄漏点下风侧1 m处;可通过采用降低硐室环境温度、减少泄漏面积和增加风速等措施防止柴油蒸气-瓦斯混合气体燃烧和爆炸。

关键词：煤矿开采加油硐室柴油蒸气泄露扩散规律体积分数峰值预测

钙钛矿太阳能电池纳米纤维改性电子传输层研究

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无机材料学报 2024年第7期39卷 828-834,I0006,I0007页

作者：肖梓晨何世豪邱诚远邓攀张威戴维德仁缑炎卓李金华尤俊王贤保林俍佑湖北大学功能材料绿色制备与应用教育部重点实验室武汉430062 湖北大学高分子材料湖北省重点实验室武汉430062 湖北大学材料科学与工程学院武汉430062

二氧化锡(SnO_(2))由于具有高透光率、高电子迁移率、良好的紫外稳定性以及可低温加工等优势,作为电子传输材料在钙钛矿太阳能电池(PSC)中得到广泛应用。然而,用商业胶体溶液制备的SnO_(2)电子传输层仍然存在易团聚、缺陷多、能级不匹... 详细信息

二氧化锡(SnO_(2))由于具有高透光率、高电子迁移率、良好的紫外稳定性以及可低温加工等优势,作为电子传输材料在钙钛矿太阳能电池(PSC)中得到广泛应用。然而,用商业胶体溶液制备的SnO_(2)电子传输层仍然存在易团聚、缺陷多、能级不匹配等问题,限制了器件性能和稳定性。本研究将一种高分子甲壳素纳米纤维(1,2-二苯甲酰氧基苯基甲壳素,DC)引入到SnO_(2)前驱液中来改善SnO_(2)薄膜质量,系统研究了DC对前驱液、薄膜和器件性能的影响。实验结果表明,DC添加剂能够有效抑制纳米颗粒团聚,使前驱液分散得更均匀。改善后的SnO_(2)薄膜的粗糙度更小,能更好地被钙钛矿溶液浸润,有利于SnO_(2)与钙钛矿层形成更紧密的接触。同时,SnO_(2)薄膜中的氧空位缺陷被有效钝化,缺陷占比降低至30%,进一步提升了薄膜质量。改进后SnO_(2)电子传输层与钙钛矿层的能级匹配性更好,载流子提取和传输性能得到优化。DC改性后的PSC性能得到显著提升,最优器件的光电转换效率达到19.11%。本工作不仅解决了SnO_(2)电子传输层在制备过程中的团聚问题,而且为提高PSC能提供了理论指导与方法。

关键词：二氧化锡电子传输层钙钛矿太阳能电池高分子光电转换效率

Origins of black carbon from anthropogenic emissions and open biomass burning transported to Xishuangbanna, Southwest China

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Journal of Environmental Sciences 2023年第3期125卷 277-289页

作者： Xuyan Liu SiwenWang Qianqian Zhang Chunlai Jiang linlin Liang shihao Tang Xingying Zhang Xiuzhen Han lin Zhu National Satellite Meteorological Center Beijing 100081China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China Department of Multiphase Chemistry Max Planck Institute for ChemistryMainz 55128Germany Research Center for Total Pollution Load Control and Emission Trading Chinese Academy of Environmental PlanningBeijing 100012China State Key Laboratory of Severe Weather and Key Laboratory for Atmospheric Chemistry Chinese Academy of Meteorological SciencesBeijing 100081China

Black carbon(BC) has importance regarding aerosol composition, radiative balance, and human exposure. This study adopted a backward-trajectory approach to quantify the origins of BC from anthropogenic emissions(BCAn) and open biomass burning(BCBB) transported to Xishuangbanna in 2017. Haze months, between haze and clean months, and clean months in Xishuangbanna were defined according to daily PM_(2.5)concentrations of >75, 35–75, andling winds in different *** yearly contributions to the effective emission intensity of BCAnand BCBBtransported to Xishuangbanna were 52% and 48%, respectively. However, when haze occurred in Xishuangbanna, the average BCAnand BCBBcontributions were 23% and 77%, respectively. This suggests that open biomass burning(BB) becomes the dominant source in haze months. Myanmar, India, and Laos were the dominant source regions of BC transported to Xishuangbanna during haze months, accounting for 59%, 18%, and 13% of the total, respectively. Furthermore, India was identified as the most important source regions of BCAntransported to Xishuangbanna in haze months, accounting for 14%. The two countries making the greatest contributions to BCBBtransported to Xishuangbanna were Myanmar and Laos in haze months, accounting for 55% and 13%, respectively. BC emissions from Xishuangbanna had minimal effects on the results of the present study. It is suggested that open BB in Myanmar and Laos, and anthropogenic emissions in India were responsible for poor air quality in Xishuangbanna.

关键词： Black carbon Xishuangbanna Effective emission intensity Anthropogenic emissions Open biomass burning