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山东淄博博山猕猴桃产业发展现状与对策建议

中国果树 2024年第10期 143-150页

作者：崔玉玉金光春青岛农业大学经济管理学院山东266109

通过详细分析山东省淄博市博山猕猴桃产业现状,以期为淄博市博山猕猴桃产业发展提供有意义的参考。采用文献分析法和专家咨询法,对淄博市博山猕猴桃产业发展进行了深度研究。为了促进博山猕猴桃产业的高质量发展,通过研究发展历程、种... 详细信息

通过详细分析山东省淄博市博山猕猴桃产业现状,以期为淄博市博山猕猴桃产业发展提供有意义的参考。采用文献分析法和专家咨询法,对淄博市博山猕猴桃产业发展进行了深度研究。为了促进博山猕猴桃产业的高质量发展,通过研究发展历程、种植规模和产量、生态产区及优势品种、生产经营模式、金融助推发展、品牌与市场等现状,提出加快品种结构优化、发展壮大龙头企业、拓展国内外销售市场、大力推动三产融合的建议。

关键词：猕猴桃发展现状对策建议博山

Surface Characteristics of Mussel-inspired Polydopamine Coating on Titanium Substrates

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Journal of Wuhan University of Technology(Materials Science) 2014年第1期29卷 197-200页

作者：姜玲 jin guangchun KANG Jiyeon YU Lingmin YOON Wookang LIM Myungjin PAR K Ilsong LEE Minho jin Dongchun Yantai Affiliated Hospital of Binzhou Medical University Oral Medical College Beihua University Department of Oral and Maxillofacial Surgery Hallym University Dongtan Sacred Heart Hospital Department of Dental Biomaterials and Institute of Oral Bioscience School of Dentistry BK21 Project Chonbuk National University Department of Veterinary Yanbian University

Mussel adhesive proteins are non-toxic, biodegradable and have low immunogenic qualities that make them highly attractive for medical purposes compared with man-made materials. 3,4-DOPA, which is a dopamine precursor, is a critical element for achieving mussel-like adhesive properties. In present study, polydopamine was coated onto the titanium surfaces by dipping in a 2 mg/mL dopamine solution in 10 mM Tris- HCl buffer at pH 8.5. EDX element analysis and Raman spectroscopic analysis of the surface were conducted to verify the formation of polydopamine. The surface characteristics of polydopamine-coated titanium plates were observed by SEM and AFM. Hydrophilicity and corrosion-resistance were also evaluated by static contact angle measurements and potentiodynamic polarization corrosion tests. The absorption intensity for pH-induced polymerization rapidly increased for the initial four hours and thereafter smoothly increased. EDX element analyses revealed that the content of carbon and oxygen increased and the content of titanium decreased after the coating process. In the Raman spectra, polydopamine resulted in two new peaks at approximately 1 370 and 1 570 cm^-1 resulting from the stretching and deformation of catechol. Microstructural features revealed that nanometer-sized bright granules were randomly distributed after coating, and these nanoparticles grew with increased coating time. The Ra values of polydopamine-coated titanium plates were showed to increase with coating time. Compared to the pure titanium curve, the inflection point of polydopamine-coated titanium was located at a higher corrosion potential and lower corrosion current density. Findings from our research suggested that polydopamine coatings offer a versatile approach for titanium surface modification.

关键词： surface modification titanium polydopamine surface characteristics

Cross-Dimension Attentive Feature Fusion Network for Unsupervised Time-Series Anomaly Detection

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Computer Modeling in Engineering & Sciences 2024年第6期139卷 3011-3027页

作者： Rui Wang Yao Zhou guangchun Luo Peng Chen Dezhong Peng School of Computer Science and Engineering University of Electronic Science and Technology of ChinaChengdu611731China School of Computer and Software Engineering Xihua UniversityChengdu610039China School of Computer Science Sichuan UniversityChengdu610065China National Innovation Center for UHD Video Technology Chengdu610095China

Time series anomaly detection is crucial in various industrial applications to identify unusual behaviors within the time series *** to the challenges associated with annotating anomaly events,time series reconstruction has become a prevalent approach for unsupervised anomaly ***,effectively learning representations and achieving accurate detection results remain challenging due to the intricate temporal patterns and dependencies in real-world time *** this paper,we propose a cross-dimension attentive feature fusion network for time series anomaly detection,referred to as ***,a series and feature mixing block is introduced to learn representations in 1D ***,a fast Fourier transform is employed to convert the time series into 2D space,providing the capability for 2D feature ***,a cross-dimension attentive feature fusion mechanism is designed that adaptively integrates features across different dimensions for anomaly *** results on real-world time series datasets demonstrate that CAFFN performs better than other competing methods in time series anomaly detection.

关键词： Time series anomaly detection unsupervised feature learning feature fusion

Effect of Y_(2)O_(3) on microstructure and properties of CoCrFeNiTiNb high entropy alloy coating on Ti-6Al-4V surface by laser cladding

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Journal of Rare Earths 2024年第3期42卷 586-599,I0006页

作者： Zhen Li Wei Zhao Kedong Yu Ning Guo guangchun Xiao Zhiming Wang Hui Zhang College of Mechanical Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan250353China Shandong Institute of Mechanical Design and Research Jinan250031China

The effects of Y_(2)O_(3) on the microstructure, microhardness, wear resistance, high-temperature oxidation resistance, hot corrosion resistance, and electrochemical corrosion behaviour of CoCrFeNiTiNb high entropy alloy coatings formed on Ti-6Al-4V alloy surfaces were studied. The results show that the addition of Y_(2)O_(3) changes the proportion of the phase but does not change its type. The average grain size is only 1/4.7 of that of the high entropy alloy(HEA) coating, and the fine-grained strengthening leads to increases in the microhardness and wear resistance of 21.8% and 26.9%, respectively. The addition of Y_(2)O_(3) enhances the denseness and bonding properties of the oxide and corrosion product layers, reducing the oxidation and hot corrosion rates by 60.3% and 40.3%, respectively. The addition of Y_(2)O_(3) doubles the corrosion resistance which is attributed to the refinement of the grains, the increased proportion of HCP and TiN, and the weakening of galvanic coupling corrosion.

关键词： Laser cladding High entropy alloy coatings Rare earths Wear properties High temperature properties Electrochemical corrosion

Apatite Fission Track Thermochronology of Granite from the Xiazhuang Uranium Ore Field,South China:Implications for Exhumation History and Ore Preservation

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Acta Geologica Sinica(English Edition) 2024年第2期98卷 430-440页

作者： SUN Yue CHEN Zhengle PAN Jiayong HUO Hailong LI Haidong SUN Junjie XU guangchun State Key Laboratory of Nuclear Resources and Environment School of Earth SciencesEast China University of TechnologyNanchang 330013China Institute of Geomechanics Chinese Academy of Geological SciencesBeijing 100081China No.290 Research Institute CNNCShaoguanGuangdong 512029China

Xiazhuang uranium ore field,located in the southern part of the Nanling Metallogenic Belt,is considered one of the largest granite-related U regions in South *** this paper,we contribute new apatite fission track data and thermal history modeling to constrain the exhumation history and evaluate preservation potential of the Xiazhuang Uranium ore *** Triassic outcrop granite samples collected from different locations of Xiazhuang Uranium ore field yield AFT ages ranging from 43 to 24 Ma with similar mean confined fission track lengths ranging from 11.8±2.0 to 12.9±1.9μm and Dpar values between 1.01 and 1.51μ*** robustness time-temperature reconstructions of samples from the hanging wall of Huangpi fault show that the Xiazhuang Uranium ore field experienced a time of monotonous and slow cooling starting from middle Paleocene to middle Miocene(~60-10 Ma),followed by relatively rapid exhumation in the late Miocene(~10-5 Ma)and nearly thermal stability in the Pliocene-Quaternary(~5-0 Ma).The amount of exhumation after U mineralization since the Middle Paleogene was estimated as~4.3±1.8 km according to the integrated thermal history *** studies indicate that the ore-forming ages of U deposits in the Xiazhuang ore field are mainly before Middle Paleocene and the mineralization depths are more than 4.4±1.2 ***,the exhumation history since middle Paleocene plays important roles in the preservation of the Xiazhuang Uranium ore field.

关键词： apatite fission track exhumation history ore preservation Xiazhuang Uranium ore field South China

Contact Stress Reliability Analysis Model for Cylindrical Gear with Circular Arc Tooth Trace Based on an Improved Metamodel

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Computer Modeling in Engineering & Sciences 2024年第7期140卷 593-619页

作者： Qi Zhang Zhixin Chen Yang Wu Guoqi Xiang Guang Wen Xuegang Zhang Yongchun Xie guangchun Yang School of Intelligent Manufacturing&Automobile Chengdu Industrial Vocational Technical CollegeChengdu610218China School of Intelligent Manufacturing Panzhihua UniversityPanzhihua617000China School of Electrical Engineering Chengdu Industry and Trade CollegeChengdu601165China School of Mechanical Engineering Sichuan UniversityChengdu601165China Chengdu Technological University Chengdu611730China

Although there is currently no unified standard theoretical formula for calculating the contact stress of cylindrical gears with a circular arc tooth trace(referred to as CATT gear),a mathematical model for determining the contact stress of CATT gear is essential for studying how parameters affect its contact stress and building the contact stress limit state equation for contact stress reliability *** this study,a mathematical relationship between design parameters and contact stress is formulated using the *** enhance the model’s accuracy,we propose a new hybrid algorithm that merges the genetic algorithm with the Quantum Particle Swarm optimization algorithm,leveraging the strengths of ***,the“parental inheritance+self-learning”optimization model is used to fine-tune the KrigingMetamodel’s *** this,amathematicalmodel for calculating the contact stress of Variable Hyperbolic Circular-Arc-Tooth-Trace(VH-CATT)gears using the optimized Kriging model was *** then examined how different gear parameters affect the VH-CATT gears’contact *** simulation results show:(1)Improvements in R2,RMSE,and RMAE.R2 rose from0.9852 to 0.9974(a 1.22%increase),nearing 1,suggesting the optimized Kriging Metamodel’s global error is ***,RMSE dropped from3.9210 to 1.6492,a decline of 57.94%.The global error of the GA-IQPSO-Kriging algorithm was also reduced,with RMAE decreasing by 58.69%from 0.1823 to 0.0753,showing the algorithm’s enhanced *** a comparison of ten experimental groups selected randomly,the GA-IQPSO-Kriging and FEM-based contact analysis methods were used to measure contact *** revealed a maximum error of 12.11667 MPA,which represents 2.85%of the real value.(2)Several factors,including the pressure angle,tooth width,modulus,and tooth line radius,are inversely related to contact *** descending order of their impact on the contact stress is:tooth line radius>modulus

关键词： CATT gear contact stress finite element method metamodel hybrid algorithm influencing factors

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山东省脱贫果农防返贫实践模式及政策建议

中国果树 2023年第8期 126-130页

作者：徐健金光春青岛农业大学经济管理学院山东266109

通过研究山东省脱贫果农防返贫实践模式,为山东省脱贫果农防返贫提供有价值的政策建议。运用文献研究和专家咨询法,构建了“政府+企业+合作社+脱贫果农”的企业带动模式、“政府+合作社+脱贫果农”的合作社带动模式和“政府+家庭农场+... 详细信息

通过研究山东省脱贫果农防返贫实践模式,为山东省脱贫果农防返贫提供有价值的政策建议。运用文献研究和专家咨询法,构建了“政府+企业+合作社+脱贫果农”的企业带动模式、“政府+合作社+脱贫果农”的合作社带动模式和“政府+家庭农场+脱贫果农”的家庭农场带动模式,并对各模式进行了优劣势分析。政策建议如下:在企业带动模式方面,应鼓励支持企业参与产学研合作,建立企业经营风险防范机制,鼓励社会资本投入;在合作社带动模式方面,应大力发展股份合作,加大财税支持力度,大力发展果农专业合作社规模及运营能力;在家庭农场带动模式方面,应完善基础设施条件,建立果农生产安全保障机制,创新发展订单果业。

关键词：脱贫果农防返贫模式建议山东

日本京都府果农“6次产业化”专业人才培育经验及其借鉴

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中国果树 2023年第10期 136-140页

作者：金光春徐健青岛农业大学经济管理学院山东266109

通过详细分析日本京都府果农“6次产业化”专业人才培育,以期为我国科学制定新型职业果农培育政策提供有意义的参考价值。运用文献分析法与专家咨询法对日本京都府果农“6次产业化”专业人才培育进行了深入研究。日本京都府通过制定“... 详细信息

通过详细分析日本京都府果农“6次产业化”专业人才培育,以期为我国科学制定新型职业果农培育政策提供有意义的参考价值。运用文献分析法与专家咨询法对日本京都府果农“6次产业化”专业人才培育进行了深入研究。日本京都府通过制定“明日京都”行政运营方针,指定了京都府农业综合支援中心、农林水产业工作岗位网站、京都府立农业专门学校、丹后农业实践型学社、近畿地区“6次产业化”中央支援中心,不仅培育出一批果农“6次产业化”专业人才,而且激活了乡村社会经济发展。我国可借鉴日本经验,提出建立以需求为导向的顶层设计,优化新型职业果农培育体系,加大新型职业果农培育投融资渠道,探索和培育“10次产业化”新型职业果农的建议。

关键词：果农日本京都府专业人才培育

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谈中小学教师需树立的几种科研意识

延边教育学院学报 2020年第3期34卷 203-204页

作者：金光春延边州教育学会吉林延吉133000

随着教育改革的不断深入,教师开展教育科研活动,积累教学经验,形成教学智慧,最终在质的层面实现教师专业发展显得尤为重要。教师能否积极主动地投身于教育科研活动,关键在于教师是否具有科研意识。

关键词：中小学教师科研意识树立