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新时代职业教育高质量发展的机遇、挑战及破解路径

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黑龙江教师发展学院学报 2025年第1期44卷 87-90页

作者：洪娟江苏联合职业技术学院苏州工业园区分院江苏苏州215123

随着新时代的到来,职业教育迎来了高质量发展的黄金时期。在这一背景下,政策环境的优化、经济发展需求增加、信息技术深度融合为职业教育高质量发展带来了前所未有的机遇。同时,办学条件与经费投入不足、师资队伍建设不完善及学生就业... 详细信息

随着新时代的到来,职业教育迎来了高质量发展的黄金时期。在这一背景下,政策环境的优化、经济发展需求增加、信息技术深度融合为职业教育高质量发展带来了前所未有的机遇。同时,办学条件与经费投入不足、师资队伍建设不完善及学生就业压力等挑战也随之而来。为此,高职院校应通过加大经费投入改善办学条件、加强师资队伍建设提升教学质量、优化专业设置并强化校企合作等路径,有力地推动新时代职业教育的高质量发展。

关键词：新时代职业教育高质量发展机遇挑战破解路径

基于EDEM的花生联合收获机清选装置设计与试验

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农机化研究 2025年第1期47卷 99-105页

作者：白云李娟徐盛果青岛农业大学机电工程学院山东青岛266109 江苏深瑞光学技术有限公司南京210031

为进一步降低花生联合收获清选除杂过程中荚果损失率高、含杂率高等问题,重点研究了花生混合物(花生荚果—茎秆—土杂)基本物理参数和悬浮特性,创新提出了一种风筛组合式花生清选装置。该振动筛上筛采取锯齿式结构,下筛采取孔式结构,增... 详细信息

为进一步降低花生联合收获清选除杂过程中荚果损失率高、含杂率高等问题,重点研究了花生混合物(花生荚果—茎秆—土杂)基本物理参数和悬浮特性,创新提出了一种风筛组合式花生清选装置。该振动筛上筛采取锯齿式结构,下筛采取孔式结构,增加了花生混合物运动距离,提高了花生混合物清选效率。为确定振动筛最佳工作参数,结合EDEM仿真软件,建立了花生荚果—茎秆—土杂离散元模型,系统分析了振动筛往复作业过程中花生混合物的运动轨迹,并以振动筛振幅、频率和倾角为试验因素,以损失率和含杂率为试验指标进行试验优化分析,通过Design Expert 10试验分析软件Optimization,对试验结果进行优化。结果表明:在振动筛最佳工作参数下,即振幅为5.4 mm、频率为24 Hz、倾角为8°时,花生混合物损失率为1.57%,含杂率为1.19%。

关键词：花生清选除杂 EDEM 试验分析

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Nonlinear magneto-electric response of a giant magnetostrictive/piezoelectric composite cylinder

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Acta Mechanica Sinica 2012年第2期28卷 385-392页

作者： Yuan-Wen Gao juan-juan Zhang Key Laboratory of Mechanics on Western Disaster and Environment Ministry of Education and College of Civil Engineering and MechanicsLanzhou University730000 LanzhouChina

In this study, we investigate the nonlinear cou- pling magneto-electric （ME） effect of a giant magnetostric- tive/piezoelectric composite cylinder. The nonlinear consti- tutive relations of the ME material are taken into account, and the influences of the nonlinear material properties on the ME effect are investigated for the static and dynamic cases, respectively. The influences of different constraint conditions on the ME effect are discussed. In the dynamic case considering nonlinear material properties, the double frequency ME response （The response frequency is twice the applied magnetic frequency） is obtained and discussed, which can be used to explain the experiment phenomenon in which the input signal with frequency f is converted to the output signal with 2f in ME laminated structures. Some calculations on nonlinear ME effect are conducted. The obtained results indicate that the nonlinear material properties affect not only the magnitude of the ME effect in the static case but also the ME response frequency in the dynamic case

关键词： Nonlinear coupling ME effect Layered com- posite cylinder. Double frequency ME response

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数字技术驱动下中国民歌变革及应对策略研究

湖北科技学院学报 2025年第1期45卷 80-85页

作者：胡娟方元河南职业技术学院音乐学院河南郑州450046

数字科技的崛起对音乐创作和传播方式带来了革命性的变化,同时也对中国民歌的传承和发展提出了新的课题。本研究旨在深入探讨数字化发展对中国民歌的影响,包括作品表演形式与作品的传承与创新,并详细分析其所面临的挑战和机遇,提出相应... 详细信息

数字科技的崛起对音乐创作和传播方式带来了革命性的变化,同时也对中国民歌的传承和发展提出了新的课题。本研究旨在深入探讨数字化发展对中国民歌的影响,包括作品表演形式与作品的传承与创新,并详细分析其所面临的挑战和机遇,提出相应的对策和建议。通过理论支持和实践指导,期望为传承和创新中国民歌作出积极贡献。

关键词：数字技术中国民歌变革应对

锆基金属有机框架捕获黄连中的生物碱类药物活性成分

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分析测试学报 2025年第1期44卷 188-194页

作者：司甜甜赵薇王慧张红玉刘小烨容蓉冯娟娟山东中医药大学药学院山东济南250355 济南大学化学化工学院山东济南250022

采用溶剂热法制备了锆基MOF-808,利用其结构优势实现了中药黄连中生物碱类药物活性成分的富集与捕获,并结合其结构特点探讨了其协同低共熔溶剂捕获生物碱类活性成分过程中的相互作用。通过优化孵育捕获等条件,对黄连粗提液中药根碱的回... 详细信息

采用溶剂热法制备了锆基MOF-808,利用其结构优势实现了中药黄连中生物碱类药物活性成分的富集与捕获,并结合其结构特点探讨了其协同低共熔溶剂捕获生物碱类活性成分过程中的相互作用。通过优化孵育捕获等条件,对黄连粗提液中药根碱的回收率达到85.78%,结合高效液相色谱技术建立了检测黄连粗提液中5种生物碱类活性成分的方法。方法的线性范围为0.1~300μg·L^(-1),检出限为0.02~0.05μg·L^(-1),相对标准偏差为0.40%~4.7%,加标回收率达到69.7%~128%。该研究实现了中药黄连中生物碱类活性成分的高效、快速富集与捕获,为MOFs材料在选择性捕获与富集中药有效成分等领域的研究提供了新思路。

关键词：金属有机框架选择性富集色谱分离生物碱活性成分黄连

Conserved quantities and adiabatic invariants of fractional Birkhoffian system of Herglotz type

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Chinese Physics B 2020年第4期29卷 303-311页

作者： juan-juan Ding Yi Zhang School of Mathematics and Physics Suzhou University of Science and TechnologySuzhou 215009China College of Civil Engineering Suzhou University of Science and TechnologySuzhou 215011China

In order to further study the dynamical behavior of nonconservative systems,we study the conserved quantities and the adiabatic invariants of fractional Brikhoffian systems with four kinds of different fractional derivatives based on Herglotz differential variational ***,the conserved quantities of Herglotz type for the fractional Brikhoffian systems based on Riemann-Liouville derivatives and their existence conditions are established by using the fractional Pfaff-Birkhoff-d Alembert principle of Herglotz ***,the effects of small perturbations on fractional Birkhoffian systems are studied,the conditions for the existence of adiabatic invariants for the Birkhoffian systems of Herglotz type based on Riemann-Liouville derivatives are established,and the adiabatic invariants of Herglotz type are ***,the conserved quantities and adiabatic invariants for the fractional Birkhoffian systems of Herglotz type under other three kinds of fractional derivatives are established,namely Caputo derivative,Riesz-Riemann-Liouville derivative and Riesz-Caputo ***,an example is given to illustrate the application of the results.

关键词： fractional Birkhoffian system Pfaff-Birkhoff-d’Alembert principle adiabatic invariant Herglotz generalized variational principle

Solvent Property Induced Morphological Changes of ABA Amphiphilic Triblock Copolymer Micelles in Dilute Solution: A Self-consistent Field Simulation Study

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Chinese Journal of Polymer Science 2014年第12期32卷 1704-1713页

作者： juan-juan Fan Yuan-yuan Han 崔杰 College of Information Technology Jilin Agricultural University State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences

The morphological changes of ABA amphiphilic triblock copolymer micelles in dilute solution were systematically studied by tuning the solvent property using self-consistent field simulation. The solvent property was tuned by changing the Flory-Huggins interaction parameters between each type of blocks and solvent, respectively. The simulation results show that by changing the solvent properties, a series of micelle morphologies such as vesicle, cage-like, ring-shaped, rod-like and spherical micelle morphologies can be obtained. Variations of the free energy of the solution system and the surface area of micelles with the Flory-Huggins interaction parameters were calculated to better understand the effect of solvent property on micelle morphologies. In addition, a phase diagram showing the morphological changes of micelles with the Flory-Huggins interaction parameters is provided.

关键词： Solvent property Triblock copolymer Self-consistent field Simulation.

New open clusters found by manual mining of data based on Gaia DR2

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Research in Astronomy and Astrophysics 2021年第5期21卷 147-154页

作者： juan Casado Facultad de Ciencias Universidad Autnoma de Barcelona08193BellaterraCataloniaSpain

The physical nature of a series of 20 new open clusters is confirmed employing existing data on putative star members,mainly from the second Gaia Data Release(DR2).The clusters were discovered as overdensities of stars by visual inspection of either photographic DSS plates or proper motion plots of random source *** reported objects are not present in the most comprehensive or recent catalogs of stellar clusters and *** all of them,clumps of comoving stars are revealed in the proper motion *** parallaxes of the clumped stars are compatible with the real existence of open clusters over narrow ranges of *** density calculations,free of most noise from non-member sources,allow differentiating a cluster core and an extended cluster corona in some ***-magnitude diagrams generally show a definite main sequence that allows confirmation of the physical existence of the clusters and some of their *** of the new clusters seem to form a double system with a common *** of the new clusters challenge the claim of near completeness of the known OC population in the distance range from 1.0 to 1.8 kpc from the Sun(Kharchenko et al.).

关键词： astronomical databases:miscellaneous parallaxes proper motions(stars:)Hertzsprung-Russell CCM diagrams(Galaxy:)open clusters associations:individual

Polycyclic aromatic hydrocarbon biodegradation and extracellular enzyme secretion in agitated and stationary cultures of Phanerochaete chrysosporium

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Journal of Environmental Sciences 2008年第1期20卷 88-93页

作者： DING juan CONG Jun ZHOU juan GAO Shixiang State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing 210093 China School of the Energy and Environment Southeast University Nanjing 210096 China

The extracellular enzyme secretion and biodegradation of polycyclic aromatic hydrocarbons （PAHs） were studied in agitated and shallow stationary liquid cultures of Phanerochaete chrysosporium. Veratryl alcohol and Tween80 were added to cultures as lignin peroxidase （LIP） and manganese peroxidase （MnP） inducer, respectively. Shallow stationary cultures were suitable for the production of enzyme, whereas agitated cultures enhanced overall biodegradation by facilitating interphase mass transfer of PAHs into aqueous phases. The use of a LiP stimulator, veratryl alcohol, did not increase PAH degradation but significantly enhanced LiP activity. In contrast, Tween80 increased both MnP secretion and PAH degradation in shallow stationary cultures. On the other hand, high PAH degradation was observed in agitated cultures in the absence of detectable LiP and MnP activities. The results suggested that extracellular peroxidase activities are not directly related to the PAH degradation, and the increased solubility rather than enzyme activity may be more important in the promotion of PAH degradation.

关键词： lignin peroxidase (LIP) manganese peroxidase (MnP) Phanerochaete chrysosporium polycyclic aromatic hydrocarbons (PAHs) solubilization