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信息技术在果蔬冷库系统中的应用

中国果菜 2024年第9期44卷 7-11页

作者：龙艳萍济南工程职业技术学院机电工程学院山东济南250200

冷库是延长果蔬贮藏期的关键设施,而应用信息技术可以实现果蔬冷库的冷藏装置自动化控制、果蔬温度数据采集分析以及冷库内设备的物联网应用等功能,进而达到精确调控果蔬冷库的温度、降低能耗、提高管理效率的目的。随着人工智能算法和... 详细信息

冷库是延长果蔬贮藏期的关键设施,而应用信息技术可以实现果蔬冷库的冷藏装置自动化控制、果蔬温度数据采集分析以及冷库内设备的物联网应用等功能,进而达到精确调控果蔬冷库的温度、降低能耗、提高管理效率的目的。随着人工智能算法和区块链技术的发展,冷库系统将更加智能化和网络化,不仅可以优化果菜的贮存和运输环境,还能实现果蔬从种植到消费者手中的全程质量可追溯。本文探讨了信息技术在果蔬冷库系统中的应用及未来发展趋势,包括自动化控制、数据采集分析、物联网技术和人工智能算法。这些技术的应用提高了冷库运营的效率和安全性,为实现果蔬贮存的预测优化和质量可追溯性提供了有力支持,有助于保障食品安全和供应链的稳定。

关键词：冷库信息技术自动化控制物联网区块链

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变电站重要二次回路可靠性预测预判系统研究

电力设备管理 2024年第12期 53-55页

作者：龙崦平熊慧敏张伟杨实国网湖南省电力有限公司超高压变电公司

本文通过对变电站重要二次回路故障分析,指出多点接地电流和多节点电位检查的重要性,根据采集的电力数据,建立多点接地电流、多节点电位的可视化预测预判分析模型,通过系统分析和应用,验证系统的可靠性。

关键词：重要二次回路故障多点接地电流多节点电位预测预判

Characteristics and processing of Pol Ⅳ-dependent transcripts in Arabidopsis

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Journal of Genetics and Genomics 2017年第1期44卷 3-6页

作者： Hsuan Yu Kuo Elise L.Jacobsen yanping long Xinyuan Chen Jixian Zhai Department of Molecular Cell and Developmental BiologyUniversity of California at Los Angeles Department of Biology Southern University of Science and Technology

In plants, RNA-directed DNA methylation （RdDM） plays an essential role in silencing transposable elements that would otherwise have a deleterious effect on genome integrity. RdDM is an important pathway that establishes and maintains de novo DNA methylation in all three sequence contexts： CG, CHG, and CHH （where H is A, C, or T）, and the methylation is targeted by 24-nt small interfering RNAs （siRNAs）（Law and Jacobsen, 2010）.

关键词： DCL Characteristics and processing of Pol siRNAs

“1+1>2”:Highly efficient removal of organic pollutants by composite nanofibrous membrane based on the synergistic effect of adsorption and photocatalysis

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Journal of Materials Science & Technology 2022年第29期124卷 76-85页

作者： Yuanting Xu Wanting Lin Dandan Yuan Shifan Chen Fang Li yanping long Chao He Weifeng Zhao Changsheng Zhao College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China Department of Polymer Science and Engineering Zhejiang UniversityHangzhou 310027China Med-X Center for Materials Sichuan UniversityChengdu 610041China College of Chemical Engineering Sichuan UniversityChengdu 610065China

Adsorption and photocatalysis are regarded as two desirable technologies for wastewater remediation,but are still unsatisfactory in removal effect,eco-friendly regeneration and facile *** this study,we developed a composite nanofibrous membrane material with excellent removal performance for organic pollutants based on synergistic adsorption and photocatalysis.A novel boron-doped,nitrogen-deficient graphitic carbon nitride(B-C3N4)photocatalyst as well as an amphiphilic copolymer of methyl methacrylate and acrylic acid(p(MMA-AA))were synthesized respectively,and then used to modify polyethersulfone for the fabrication of composite nanofibrous membrane with improved hydrophilicity,negativelycharge property and enhanced visible light response ***,the synergistic effect of adsorption and photocatalytic degradation for organic pollutants were identified especially and resulted in an excellent removal efficiency even superior to the combination of adsorption and photocatalytic degradation,which could be called a“1+1>2”*** addition,the regeneration and reusability,the purification ability for multicomponent wastewater,and the photocatalytic mechanism,were investigated and discussed *** this work,we not only prepared the nanofibrous membrane with synergistic effect of adsorption and photocatalysis,but also provided a versatile approach to design dualfunctional support material to ensure the practical applications of powdery photocatalyst in wastewater treatment.

关键词： Composite nanofibrous membrane material Wastewater remediation Photocatalytic degradation Adsorption Synergistic effect

Photo-responsive functional materials based on light-driven molecular motors

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Light(Science & Applications) 2024年第3期13卷 407-420页

作者： yanping Deng Guiying long Yang Zhang Wei Zhao Guofu Zhou Ben L.Feringa Jiawen Chen SCNU-UG International Joint Laboratory of Molecular Science and Displays National Center for International Research on Green OptoelectronicsSouth China Normal UniversityGuangzhou 510006China Stratingh Institute for Chemistry University of GroningenNijenborgh 49747AG GroningenThe Netherlands

In the past two decades,the research and development of light-triggered molecular machines have mainly focused on developing molecular devices at the nanoscale.A key scientific issue in the field is how to amplify the controlled motion of molecules at the nanoscale along multiple length scales,such as the mesoscopic or the macroscopic scale,or in a more practical perspective,how to convert molecular motion into changes of properties of a macroscopic ***-driven molecular motors are able to perform repetitive unidirectional rotation upon irradiation,which offers unique opportunities for responsive macroscopic *** several reviews that focus on the design,synthesis and operation of the motors at the nanoscale,photo-responsive macroscopic materials based on light-driven molecular motors have not been comprehensively *** the present review,we first discuss the strategy of confining absolute molecular rotation into relative rotation by grafting motors on ***,examples of self-assemble motors in supramolecular polymers with high internal order are ***,we will focus on building of motors in a covalently linked system such as polymeric gels and polymeric liquid crystals to generate complex responsive ***,a perspective toward future developments and opportunities is *** review helps us getting a more and more clear picture and understanding on how complex movement can be programmed in light-responsive systems and how man-made adaptive materials can be invented,which can serve as an important guideline for further design of complex and advanced responsive materials.

关键词： functions materials material

Development and prospects of molten steel deoxidation in steelmaking process

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International Journal of Minerals,Metallurgy and Materials 2024年第1期31卷 18-32页

作者： Zhongliang Wang yanping Bao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

In the long traditional process of steelmaking,excess oxygen is blown into the converter,and alloying elements are used for *** inevitably results in excessive deoxidation of products remaining within the steel liquid,affecting the cleanliness of the *** the increasing requirements for steel performance,reducing the oxygen content in the steel liquid and ensuring its high cleanliness is *** more than a hundred years of development,the total oxygen content in steel has been reduced from approximately 100×10^(-6)to approximately 10×10^(-6),and it can be controlled below 5×10^(-6)in some steel grades.A relatively stable and mature deoxidation technology has been formed,but further reducing the oxygen content in steel is no longer significant for improving steel *** research team developed a deoxidation technology for bearing steel by optimizing the entire conventional *** technology combines silicon–manganese predeoxidation,ladle furnace diffusion deoxidation,and vacuum final *** successfully conducted industrial experiments and produced interstitial-free steel with natural decarbonization ***-aluminum deoxidation was found to control the oxygen content in bearing steel to between 4×10^(-6) and 8×10^(-6),altering the type of inclusions,eliminating large particle Ds-type inclusions,improving the flowability of the steel liquid,and deriving a higher fatigue *** natural decarbonization predeoxidation of interstitial-free steel reduced aluminum consumption and production costs and significantly improved the quality of cast billets.

关键词： steel deoxidation deoxidizer metallurgical equipment bearing steel IF steel

Vibration-reduced anxiety-like behavior relies on ameliorating abnormalities of the somatosensory cortex and medial prefrontal cortex

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Neural Regeneration Research 2024年第6期19卷 1351-1359页

作者： Afzal Misrani Sidra Tabassum Tintin Wang Huixian Huang Jinxiang Jiang Hongjun Diao yanping Zhao Zhen Huang Shaohua Tan Cheng long Li Yang South China Normal University-Panyu Central Hospital Joint Laboratory of Translational Medical Research Panyu Central Hospital School of Life Sciences Guangzhou University School of Life Sciences South China Normal University Guangzhou Hongai Cultural Development Inc. 5. Yinguo Health Management Team College of Biophotonics South China Normal University

Tibetan singing bowls emit low-frequency sounds and produce perceptible harmonic tones and vibrations through manual tapping. The sounds the singing bowls produce have been shown to enhance relaxation and reduce anxiety. However, the underlying mechanism remains unclear. In this study, we used chronic restraint stress or sleep deprivation to establish mouse models of anxiety that exhibit anxiety-like behaviors. We then supplied treatment with singing bowls in a bottomless cage placed on the top of a cushion. We found that unlike in humans, the combination of harmonic tones and vibrations did not improve anxietylike behaviors in mice, while individual vibration components did. Additionally, the vibration of singing bowls increased the level of N-methyl-D-aspartate receptor 1 in the somatosensory cortex and prefrontal cortex of the mice, decreased the level of γ-aminobutyric acid A(GABA) receptor α 1 subtype, reduced the level of CaMKII in the prefrontal cortex, and increased the number of GABAergic interneurons. At the same time, electrophysiological tests showed that the vibration of singing bowls significantly reduced the abnormal low-frequency gamma oscillation peak frequency in the medial prefrontal cortex caused by stress restraint pressure and sleep deprivation. Results from this study indicate that the vibration of singing bowls can alleviate anxiety-like behaviors by reducing abnormal molecular and electrophysiological events in somatosensory and medial prefrontal cortex.

关键词： anxiety medial prefrontal cortex parvalbumin interneuron pressure somatosensory cortex Tibetan singing bowl vibration

西南民族地区家庭初等中等教育可支配费用分析

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开发研究 2005年第2期 102-104页

作者：龙延平龙叶先吉首大学商学院湖南吉首416000 中央民族大学教育系北京100081

本文通过综合分析西南民族地区家庭关于学校教育投资的案头资料以及笔者田野调查所取得的第一手资料,指出了当前西南民族地区绝大多数农村居民家庭只能勉强承受初等教育的费用开支。对于中等教育的费用开支,他们仅仅靠自身家庭的收入是... 详细信息

本文通过综合分析西南民族地区家庭关于学校教育投资的案头资料以及笔者田野调查所取得的第一手资料,指出了当前西南民族地区绝大多数农村居民家庭只能勉强承受初等教育的费用开支。对于中等教育的费用开支,他们仅仅靠自身家庭的收入是非常困难的,从他们的孩子进入中等教育开始,这些民族地区的家庭就开始进入了负债投资于学校教育的艰难生涯。

关键词：西南民族地区初等教育中等教育可支配费用

带LCL滤波器的单相并网逆变器低频振荡现象分析

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电力自动化设备 2014年第1期34卷 67-71,79页

作者：周林龙崦平张密晁阳郑光辉重庆大学输配电装备及系统安全与新技术国家重点实验室重庆400030

分析了带LCL滤波器的单相并网逆变器中出现的低频振荡现象。通过系统平均模型进行了MATLAB/Simulink仿真,发现随着调节系数的变化,系统由稳定状态出现了振荡现象。利用频闪映射思想推导了并网逆变器的离散迭代模型。根据系统的Jacobian... 详细信息

分析了带LCL滤波器的单相并网逆变器中出现的低频振荡现象。通过系统平均模型进行了MATLAB/Simulink仿真,发现随着调节系数的变化,系统由稳定状态出现了振荡现象。利用频闪映射思想推导了并网逆变器的离散迭代模型。根据系统的Jacobian矩阵特征值对系统进行了稳定性分析,揭示了系统产生振荡现象的原因是系统发生了Hopf分岔,并且通过分析Jacobian矩阵特征值的变化情况对系统的分岔点作出准确预测。结合系统的特征方程给出了一种系统出现低频振荡时振荡频率的确定方法。最后通过实验验证了理论分析的正确性和有效性。

关键词：并网逆变器滤波器离散迭代模型 Hopf分岔振荡频率