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生物信号采集系统结合人工辅助观察评价油茶皂素镇咳作用的量效关系研究

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江西医药 2024年第3期59卷 261-263,267页

作者：李祚勇唐远鹏陈芳辉曾韬慧林金海赣南医科大学第一附属医院赣州341000

目的建立生物信号采集系统结合人工肉眼辅助观察评价油茶皂素的镇咳作用的量效关系。方法采用生物信号采集系统,利用呼吸波振幅变化率结合人工肉眼辅助观察,评价油茶皂素剂量变化对豚鼠咳嗽次数、咳嗽潜伏期的影响,并经多元线性回归得... 详细信息

目的建立生物信号采集系统结合人工肉眼辅助观察评价油茶皂素的镇咳作用的量效关系。方法采用生物信号采集系统,利用呼吸波振幅变化率结合人工肉眼辅助观察,评价油茶皂素剂量变化对豚鼠咳嗽次数、咳嗽潜伏期的影响,并经多元线性回归得出油茶皂素镇咳量效关系方程。结果与正常呼吸波比,首次咳嗽波平均振幅变化率为2335%,末次为125%;油茶皂素75、100、175、200 mg/kg等剂量均可明显减少豚鼠咳嗽次数(P<0.05),回归方程为y=54.4576-0.2693x+0.0011x^(2);75,100、125、175、225 mg/kg等剂量均能明显延长豚鼠咳嗽潜伏期(P<0.05),回归方程为y=27.1679-0.4169x+0.0014x^(2)。结论生物信号采集系统结合人工肉眼辅助观察能客观评价油茶皂素镇咳量效关系,实验表明油茶皂素用药剂量与镇咳效应之间呈非线性关系。

关键词：油茶皂素镇咳作用生物信号采集系统量效关系

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YOLO-DD:Improved YOLOv5 for Defect Detection

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Computers, Materials & Continua 2024年第1期78卷 759-780页

作者： jinhai Wang Wei Wang Zongyin Zhang Xuemin lin Jingxian Zhao Mingyou Chen Lufeng Luo School of Electronic and Information Engineering Foshan UniversityFoshan528000China School of Mechatronic Engineering and Automation Foshan UniversityFoshan528000China

As computer technology continues to advance,factories have increasingly higher demands for detecting ***,detecting defects in a plant environment remains a challenging task due to the presence of complex backgrounds and defects of varying shapes and *** address this issue,this paper proposes YOLO-DD,a defect detectionmodel based on YOLOv5 that is effective and *** improve the feature extraction process and better capture global information,the vanilla YOLOv5 is augmented with a new module called Relative-Distance-Aware Transformer(RDAT).Additionally,an Information Gap Filling Strategy(IGFS)is proposed to improve the fusion of features at different *** classic lightweight attention mechanism Squeeze-and-Excitation(SE)module is also incorporated into the neck section to enhance feature expression and improve the model’s *** results on the NEU-DET dataset demonstrate that YOLO-DDachieves competitive results compared to state-of-the-art methods,with a 2.0% increase in accuracy compared to the original YOLOv5,achieving 82.41% accuracy and38.25FPS(framesper second).Themodel is also testedon a self-constructed fabric defect dataset,and the results show that YOLO-DD is more stable and has higher accuracy than the original YOLOv5,demonstrating its stability and generalization *** high efficiency of YOLO-DD enables it to meet the requirements of industrial high accuracy and real-time detection.

关键词： YOLO-DD defect detection feature fusion attention mechanism

Latest Scientific Results of China's Lunar and Deep Space Exploration(2022–2024)

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空间科学学报 2024年第4期44卷 622-632页

作者： XU lin LI Lei LIU Jianzhong lin Honglei LI Yang LIU Yang XIE Lianghai ZHANG jinhai QIAO Fuhao HAN Juanjuan ZOU Yongliao General Office of the Lunar and Deep Space Exploration Chinese Academy of SciencesBeijng 100190 State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190 Institute of Geochemistry Chinese Academy of SciencesGuiyang 550081 Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029

China has successfully launched six lunar probes so *** Chang'E-1 to Chang'E-4,they completed the circling,landing and roving exploration,of which Chang'E-4 was the first landing on the far side of the Moon in human ***'E-5 was launched in December 2020,bringing back 1731 g of lunar soil *** the detailed analysis of the samples,the scientists understand the history of late lunar volcanism,specifically extending lunar volcanism by about 800 million to 1 billion years,and proposed possible *** addition,there are many new understandings of space weathering such as meteorite impacts and solar wind radiation on the ***'s first Mars exploration mission Tianwen-1 was successfully launched in July *** the study of scientific data,a number of important scientific achievements have been made in the topography,water environment and shallow surface structure of *** paper introduces the main scientific achievements of Chang'E-4,Chang'E-5 and Tianwen-1 in the past two years,excluding technical and engineering *** to the large number of articles involved,this paper only introduces part of the results.

关键词： Lunar and deep space exploration of China Chang’E-4 mission Chang’E-5 mission Tianwen-1 mission

Return to the Moon:New perspectives on lunar exploration

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Science Bulletin 2024年第13期69卷 2136-2148页

作者： Yangting lin Wei Yang Hui Zhang Hejiu Hui Sen Hu Long Xiao Jianzhong Liu Zhiyong Xiao Zongyu Yue jinhai Zhang Yang Liu Jing Yang Honglei lin Aicheng Zhang Dijun Guo Sheng Gou lin Xu Yuyang He Xianguo Zhang Liping Qin Zongcheng ling Xiongyao Li Aimin Du Huaiyu He Peng Zhang Jinbin Cao Xianhua Li Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China State Key Laboratory for Mineral Deposits Research and School of Earth Sciences and Engineering Nanjing UniversityNanjing 210023China State Key Laboratory of Geological Processes and Mineral Resources School of Earth SciencesChina University of GeosciencesWuhan 430074China Institute of Geochemistry Chinese Academy of SciencesGuiyang 550002China Planetary Environmental and Astrobiological Research Laboratory School of Atmospheric SciencesSun Yat-sen UniversityZhuhai 519082China National Space Science Center Chinese Academy of SciencesBeijing 100190China Deep Space Exploration Laboratory/CAS Key Laboratory of Crust-Mantle Materials and Environments University of Science and Technology of ChinaHefei 230026China Shandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment Institute of Space SciencesShandong UniversityWeihai 264209China Technology and Engineering Center for Space Utilization Chinese Academy of SciencesBeijing 100094China School of Space and Environment Beihang UniversityBeijing 100191China

Lunar exploration is deemed crucial for uncovering the origins of the Earth-Moon system and is the first step for advancing humanity’s exploration of deep *** the past decade,the Chinese Lunar Exploration Program(CLEP),also known as the Chang’e(CE)Project,has achieved remarkable *** has successfully developed and demonstrated the engineering capability required to reach and return from the lunar ***,the CE Project has made historic firsts with the landing and on-site exploration of the far side of the Moon,along with the collection of the youngest volcanic samples from the Procellarum KREEP *** achievements have significantly enhanced our understanding of lunar *** on this success,China has proposed an ambitious crewed lunar exploration strategy,aiming to return to the Moon for scientific exploration and *** plan encompasses two primary phases:the first crewed lunar landing and exploration,followed by a thousand-kilometer scale scientific expedition to construct a geological cross-section across the lunar *** the limitations of current lunar exploration efforts and China’s engineering and technical capabilities,this paper explores the benefits of crewed lunar exploration while leveraging synergies with robotic *** study refines fundamental lunar scientific questions that could lead to significant breakthroughs,considering the respective engineering and technological *** research lays a crucial foundation for defining the objectives of future lunar exploration,emphasizing the importance of crewed missions and offering insights into potential advancements in lunar science.

关键词： Crewed lunar exploration Water and volatiles Composition and structure of lunar interior Volcanic activity and evolution of lunar mantle Space weathering and radiation environments Exploration technology

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某汽车翼子板的拉延工艺分析

锻压技术 2021年第7期46卷 96-99页

作者：林金海孙层层福建船政交通职业学院汽车学院福建福州350007 云度新能源汽车股份有限公司福建莆田351111

汽车翼子板冲压件的模具开发调试周期长、返工返修次数多,利用CAE分析软件进行翼子板的成形仿真分析,结合零件的造型,总结出合理的翼子板冲压工艺方案及注意事项,并缩短了模具开发周期,减少了模具返工返修次数,提高了模具制造质量。对... 详细信息

汽车翼子板冲压件的模具开发调试周期长、返工返修次数多,利用CAE分析软件进行翼子板的成形仿真分析,结合零件的造型,总结出合理的翼子板冲压工艺方案及注意事项,并缩短了模具开发周期,减少了模具返工返修次数,提高了模具制造质量。对翼子板的拉延工艺进行详细分析,确定翼子板拉延的主要冲压工艺参数,并且确定了拉延模具的拉延方向、压料面形状、拉延筋尺寸和位置以及工艺补充面,另外,还介绍了翼子板拉延后工序的主要内容。CAE拉延仿真分析结果对实际模具生产具有重要指导意义,根据实际模具生产结果与CAE分析结果的对比,可以证明CAE拉延仿真分析的工艺性合理。

关键词：翼子板拉延工艺拉延模具拉延筋工艺补充面 CAE分析

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基于PEST和五力模型浅析聚合支付

金融科技时代 2021年第1期29卷 62-67页

作者：林锦海云南省农村信用社联合社科技结算中心

随着扫码支付遍地开花,能够实现支付通道一体化整合的聚合支付一路高歌猛进,发展势头锐不可当,俨然已成为了支付市场的“香饽饽”。本文简要阐述了聚合支付的定义及发展历程,运用PEST模型和五力模型对聚合支付的宏观环境和产业环境进行... 详细信息

随着扫码支付遍地开花,能够实现支付通道一体化整合的聚合支付一路高歌猛进,发展势头锐不可当,俨然已成为了支付市场的“香饽饽”。本文简要阐述了聚合支付的定义及发展历程,运用PEST模型和五力模型对聚合支付的宏观环境和产业环境进行了深入分析,进而提出了“六抓六力”的发展建议:一是抓渠道聚合,着力提升服务水平;二是抓市场渗透,全力提高市场份额;三是抓多元服务,大力拓宽收入来源;四是抓双线融合,倾力打通支付闭环;五是抓信息安全,强力构建安全环境;六是抓业务合规,努力压降经营风险。

关键词：聚合支付 PEST 五力模型生态体系

二维液相色谱法测定乳粉中维生素A、D、E含量

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中国食品添加剂 2022年第11期33卷 212-217页

作者：许彬林金海陈程琳广东万田检测股份有限公司汕头515041

为检测乳粉中维生素A、D、E的含量,建立起乳粉中维生素A、4种维生素E同分异构体、维生素D_(2)、D_(3)的二维液相色谱法。样品经皂化、萃取、洗涤、浓缩、定容,以PFP色谱柱和C_(18)色谱柱进行双柱分离,甲醇-水为流动相进行洗脱,紫外检测... 详细信息

为检测乳粉中维生素A、D、E的含量,建立起乳粉中维生素A、4种维生素E同分异构体、维生素D_(2)、D_(3)的二维液相色谱法。样品经皂化、萃取、洗涤、浓缩、定容,以PFP色谱柱和C_(18)色谱柱进行双柱分离,甲醇-水为流动相进行洗脱,紫外检测器进行200~500nm波长扫描,外标法定量分析。结果表明,维生素A、4种维生素E同分异构体、维生素D_(2)、D_(3)的线性关系良好,线性范围为1.56~7.80mg/L,相关系数为0.999,平均回收率在94.0%~99.3%,相对标准偏差均小于1%,检出限为0.5~30μg/100g,定量限为1.5~90μg/100g。该方法可一次进样同时完成维生素A,α、β、γ、δ-维生素E,维生素D_(2)、D_(3)的分离测定,简便快捷,准确可靠,适用于乳粉中维生素A、D、E含量的检测。

关键词：二维液相色谱法乳粉维生素A、D、E 阀切换