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Camellia sinensis CsMYB4a participates in regulation of stamen growth by interaction with auxin signaling transduction repressor CsAUX/IAA4

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The Crop Journal 2024年第1期12卷 188-201页

作者： Guoliang Ma Mingzhuo Li Yingling Wu Changjuan Jiang Yifan Chen dawei xing Yue Zhao Yajun Liu Xiaolan Jiang Tao Xia Liping Gao School of Life Science Anhui Agricultural UniversityHefei 230036AnhuiChina Plant for Human Health Institute Department of Plant and Microbial BiologyNorth Carolina State UniversityKannapolisNC 28081USA State Key Laboratory of Tea Plant Biology and Utilization/Key Laboratory of Tea Biology and Tea Processing of Ministry of Agriculture/Anhui Provincial Laboratory of Tea Plant Biology and Utilization Anhui Agricultural UniversityHefei 230036AnhuiChina

Subgroup 4(Sg4)members of the R2R3-MYB are generally known as negative regulators of the phenylpropanoid pathway in *** previous research showed that a R2R3-MYB Sg4 member from Camellia sinensis(CsMYB4a)inhibits expression of some genes in the phenylpropanoid pathway,but its physiological function in the tea plant remained ***,CsMYB4a was found to be highly expressed in anther and filaments,and participated in regulating filament *** analysis and exogenous auxin treatment showed that the target of CsMYB4a might be the auxin signal ***/indole-3-acetic acid 4(AUX/IAA4),a repressor in auxin signal transduction,was detected from a yeast two-hybrid screen using CsMYB4a as *** silencing assays showed that both CsIAA4 and CsMYB4a regulate filament *** plants overexpressing CsIAA4 were insensitive to exogenous a-NAA,consistent with overexpression of ***-protein interaction experiments revealed that CsMYB4a interacts with N-terminal of CsIAA4 to prevent CsIAA4 *** out of the endogenous NtIAA4 gene,a CsIAA4 homolog,in tobacco alleviated filament growth inhibition and a-NAA insensitivity in plants overexpressing *** results strongly suggest that CsMYB4a works synergistically with CsIAA4 and participates in regulation of the auxin pathway in stamen.

关键词： AUX/IAA4 Auxin signaling CsMYB4a Subgroup 4 R2R3-MYB

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金融素养对农村家庭商业保险参与的影响研究——基于CHFS数据的实证

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新疆农垦经济 2024年第2期 63-76页

作者：邢大伟李晶吴玮扬州大学商学院江苏扬州225125

金融素养是个体具有的一种金融能力,对金融决策行为产生重要影响。文章基于中国家庭金融调查(CHFS2019)数据,利用Probit模型和Tobit模型,实证分析金融素养对农村家庭商业保险参与行为和参与深度的影响。研究表明:金融素养会显著促进农... 详细信息

金融素养是个体具有的一种金融能力,对金融决策行为产生重要影响。文章基于中国家庭金融调查(CHFS2019)数据,利用Probit模型和Tobit模型,实证分析金融素养对农村家庭商业保险参与行为和参与深度的影响。研究表明:金融素养会显著促进农村家庭商业保险参与行为,对农村家庭商业保险参与深度有显著促进作用,对农村高收入家庭商业保险参与促进作用更加明显;家庭收入和风险态度在金融素养对农村家庭商业保险参与影响中存在中介效应;家庭总资产、户主受教育程度和年龄会显著提升农村家庭商业保险参与。因此,文章提出加强农村金融知识普及教育,提升农村居民金融素养和金融能力;积极发展农村商业保险,提高抵御风险能力;全面推进乡村振兴,拓宽农民增收致富渠道等建议。

关键词：金融素养农村商业保险 CHFS 中介效应

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Improvement of giant magneto impedance of Co-rich melt extraction wires by stress-current annealing

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Rare Metals 2011年第4期30卷 327-331页

作者： ZHANG Shuling SUN Jianfei xing dawei School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China School of Materials Science and Engineering Taiyuan University of Science and Technology Taiyuan 030024 China

In order to improve the giant magneto impedance （GMI） of Co-rich wires for high sensitive sensor applications, ***5 wires were prepared by melt an extraction technique and subjected to Joule stress-current anneal treatments with different tensile slresses applied. And then their GMI response was investigated at a frequency range from 0.1 to 13 MHz. It was found through the comparison of results that the GMI effect of these wires had been improved through stress-current anneal treatments, because the tensile stress applied on these Co-rich wires introduced magnetoelastic energy and increased anisotropy, which improved the circular permeability and GMI effect. Their impedance ratio AZ/Z increased from 244% to 480.9% at 7 MHz and the field sensitivity increased to 0.83%/（A/m） at 5 MHz, when a tensile stress of 244 MPa was applied at an anneal current of 100 mA for 10 min. It was therefore concluded that these annealed wires were suitable for high sensitive sensor applications.

关键词： amorphous magnetic materials cobalt alloys wires giant magneto-impedance effect annealing

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跨境电商视角下农产品供应链优化发展研究

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物流科技 2024年第19期47卷 130-132页

作者：邢大伟袁心婕尹苏梁瑾扬州大学商学院江苏扬州225127

在跨境电商背景下,农产品供应链优化研究旨在应对全球市场复杂性,提高供应链灵活性和适应性,解决跨国运输、关税、技术等挑战。优化农产品供应链需要关注效率提升、成本降低、可持续性增强以及质量和安全标准的确保。在跨境电商环境下,... 详细信息

在跨境电商背景下,农产品供应链优化研究旨在应对全球市场复杂性,提高供应链灵活性和适应性,解决跨国运输、关税、技术等挑战。优化农产品供应链需要关注效率提升、成本降低、可持续性增强以及质量和安全标准的确保。在跨境电商环境下,供应链转型面对的主要问题包括适应性和灵活性的不足、严格的质量控制与安全标准,以及国际贸易政策和法规的不确定性。因此,提出的对策包括增强供应链的动态响应能力和市场敏感度、建立全面而高效的质量管理体系,以及建立有效的风险管理和合规体系,以应对国际市场的复杂需求和标准。

关键词：跨境电商供应链农产品产品质量

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排管机械手扶持装置的研制

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机械工程师 2024年第3期 112-114页

作者：邢大伟王翠张欣宇白丙建郝熔冰李景航宝鸡石油机械有限责任公司陕西宝鸡721002 国家油气钻井装备工程技术研究中心陕西宝鸡721002

扶持装置在排管机械手中起扶持管柱的作用,是排管装置重要的组成部分之一。文中介绍了单驱动双作用扶持装置的结构组成、工作流程及试验情况。该单驱动双作用扶持装置的成功设计,节约了排管机械手生产制造成本,降低了故障率,提升了排管... 详细信息

扶持装置在排管机械手中起扶持管柱的作用,是排管装置重要的组成部分之一。文中介绍了单驱动双作用扶持装置的结构组成、工作流程及试验情况。该单驱动双作用扶持装置的成功设计,节约了排管机械手生产制造成本,降低了故障率,提升了排管机械手的性能,对排管机械手的发展具有重要意义。

关键词：扶持装置单驱动双作用排管机械手

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Gibbs Free Energy and Activation Energy of ZrTiAlNiCuSn Bulk Glass Forming Alloys

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Journal of Materials Science & Technology 2004年第3期20卷 298-300页

作者： Jianfei SUN Jun SHEN Zhenye ZHU Gang WANG dawei xing Yulai GAO Bide ZHOU School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001,China Sch. of Mat. Sci. and Eng. Harbin Inst. of Technol. Harbin 150001 China

The Gibbs free energy differences between the supercooled liquid and the crystalline mixture for the (Zr_(52.5)Ti_5Al_(10)-Ni_(14.6)Cu_(17.9))_((100-x)/100)Sn_x (x=0, 1, 2, 3, 4 and 5) glass forming alloys are estimated by introducing the equationproposed by Thompson, Spaepen and Turnbull. It can be seen that the Gibbs free energy differences decrease firstas the increases of Sn addition smaller than 3, then followed by a decrease due to the successive addition of Snlarger than 3, indicating that the thermal stabilities of these glass forming alloys increase first and then followed by adecrease owing to the excessive addition of Sn. Furthermore, the activation energy of Zr_(52.5)Ti_5Al_(10)Ni_(14.6)Cu_(17.9) and(Zr_(52.5)Ti_5Al_(10)Ni_(14.6)Cu_(17.9))_(0.97)Sn_3 was evaluated by Kissinger equation. It is noted that the Sn addition increases theactivation energies for glass transition and crystallization, implying that the higher thermal stability can be obtainedby appropriate addition of Sn.

关键词： Bulk glass forming alloy Supercooled liquid Gibbs free energy Activation energy Kissinger equation

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Magnetization and giant magneto-impedance effect of Co-richmicrowires under different driven current

Magnetization and giant magneto-impedance effect of Co-richm...

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2014中国功能材料科技与产业高层论坛

作者： Shengdi Sun dawei xing Shuling Zhang Mechitrone engineering college Hei-Long-Jing Institute of Technology School of Materials Science and Engineering Harbin Institute of Technology School of Materials Science and Engineering Taiyuan University of Science and Technology

CoFeSiBamorphous microwires with a diameter of 34μm wereprepared via the melt extraction *** dependency of AC driving current Iac on giantmagneto-impedance(GMI)effect and magnetization were investigated using a4294Aimpedance analyzer and the transverse Kerr *** GMI effect was analyzed when lacchanged from 6 mA to 20 mA at a frequency ranging from 0.1MHz to 15 *** of AC current depended on the frequency correlated with the *** maximum transverse Kerr intensity(MTKI)decreased as the amplitude of Iacincreased under direct magnetic field when the frequency was below ***,when it was over 2 MHz,this dependency is significantly ***,when thefrequency was below 2 MHz,the GMI effect was optimized by selecting an adequate value ofcurrent Ip that maximizes the circular *** showed that the influence of Iac onmagnetoimpedance weakens with strong skin effect and,on the contrary when the frequencywas between 2 MHz to *** skin effect was the key factor to the GMI effect;thusthere were no obvious differences in mag-netization and GMI effect caused by changes in theamplitude of AC driving current,when the frequency was higher than 15 MHz.

关键词： Amorphous microwire GMI effect magnetization driving current

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Double-ring high-frequency common-mode switching oscillation current sensor for inverter-fed machine winding insulation monitoring

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Global Energy Interconnection 2024年第1期7卷 106-116页

作者： Lingqing Pan Xizhou Du xing Lei Ting Ye dawei Xiang Hao Li College of Electrical Power Engineering Shanghai University of Electric PowerShanghai 200090P.R.China State Grid Shanghai Municipal Electric Power Company Shanghai 200122P.R.China College of Electronics and Information Engineering Tongji UniversityShanghai 201804P.R.China

Insulation failure significantly contributes to the unpredictable shutdown of power *** to the partial discharge and high-frequency(HF)injection methods,the HF common-mode(CM)leakage current method offers a non-intrusive and highly sensitive ***,the detection of HF CM currents is susceptible to interference from differential-mode(DM)currents,which exhibit high-amplitude and multifrequency components during normal *** address this challenge,this paper proposes a double-ring current sensor based on the principle of magnetic shielding for inverter-fed machine winding insulation *** inner ring harnesses the magnetic aggregation effect to isolate the DM current magnetic field,whereas the outer ring serves as the magnetic core of the Rogowski current sensor,enabling HF CM current ***,the magnetic field distributions of the CM and DM currents were ***,a correlation between the sensor parameters and signal-to-noise ratio of the target HF CM current was ***,an experimental study was conducted on a 3-kW PMSM for *** results indicate that the proposed double-ring HF CM sensor can effectively mitigate DM current *** to a single-ring sensor,a reduction of approximately 40%in the DM component was achieved,which significantly enhanced the precision of online insulation monitoring.

关键词： Magnetic shielding Double-ring Common-mode current Maxwell simulation

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High-sensitive state perception method for inverter-fed machine turn insulation based on FrFT-Mel

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Global Energy Interconnection 2024年第2期7卷 155-165页

作者： Ruitian Fan xing Lei Tao Jia Menglong Qin Hao Li dawei Xiang College of Electrical Power Engineering Shanghai University of Electric PowerShanghai 200090P.R.China State Grid Shanghai Municipal Electric Power Company Shanghai 200437P.R.China State Grid Technology College Shandong 250002P.R.China College of Electronics and Information Engineering Tongji UniversityShanghai 201804P.R.China

Amidst the swift advancement of new power systems and electric vehicles,inverter-fed machines have progressively materialized as a pivotal apparatus for efficient energy *** winding turn insulation failure is the root cause of inverter-fed machine *** online monitoring of turn insulation health can detect potential safety risks promptly,but faces the challenge of weak characteristics of turn insulation *** study proposes an innovative method to evaluate the turn insulation state of inverter-fed machines by utilizing the fractional Fourier transform with a Mel filter(FrFT-Mel).First,the sensitivity of the high-frequency(HF)switching oscillation current to variations in turn insulation was analyzed within the fractional ***,an improved Mel filter is introduced,and its structure and parameters are specifically designed based on the features intrinsic to the common-mode impedance resonance point of the electrical ***,an evaluation index was proposed for the turn insulation state of inverter-fed *** results on a 3kW permanent magnet synchronous machine(PMSM)demonstrate that the proposed FrFT-Mel method significantly enhances the sensitivity of turn insulation state perception by approximately five times,compared to the traditional Fourier transform method.

关键词： State perception Turn insulation Switching oscillation Fractional Fourier transform Mel filter

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动态制造系统生产计划与调度协同优化

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中国机械工程 2018年第22期29卷 2767-2771页

作者：王艳红于宁蔡明邢大伟沈阳工业大学管理学院沈阳110870 沈阳工业大学信息科学与工程学院沈阳110870 东北大学机械工程与自动化学院沈阳110819

基于生产计划与调度协同优化的思路,建立了计划与调度滚动优化模型,并提出一种"闭环集成-滚动重调度"策略。当生产系统出现产能受限或订单变更等动态变化时,调度与计划形成"闭环响应模式",进而采用动态约束平衡的混合算法对生产计划与... 详细信息

基于生产计划与调度协同优化的思路,建立了计划与调度滚动优化模型,并提出一种"闭环集成-滚动重调度"策略。当生产系统出现产能受限或订单变更等动态变化时,调度与计划形成"闭环响应模式",进而采用动态约束平衡的混合算法对生产计划与调度进行协同优化。为验证所提出协同优化策略的有效性和可行性,选取典型算例进行了仿真研究,结果表明该策略能有效处理生产系统的动态变化,保证系统的调度优化及时调整。

关键词：动态制造生产计划与调度协同优化滚动重调度

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