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信号分子硫化氢参与硫肥缓解铝对水稻生长抑制作用的机制

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中国水稻科学 2024年第3期38卷 290-302页

作者：魏倩倩汪玉磊孔海民徐青山颜玉莲潘林迟春欣孔亚丽田文昊朱练峰曹小闯张均华朱春权中国水稻研究所水稻生物育种全国重点实验室杭州310006 浙江省耕地质量与肥料管理总站杭州310020

【目的】探究基于施硫肥提高水稻体内硫化氢(H_(2)S)生成缓解水稻在酸性土壤中铝(Al)毒害的栽培方式及其内在机制。【方法】以Al敏感品种Kasalath为试验材料,设置CK,CK+S(硫肥),CK+NaHS(H_(2)S供体),Al,Al+S,Al+NaHS六个盆栽处理,通过... 详细信息

【目的】探究基于施硫肥提高水稻体内硫化氢(H_(2)S)生成缓解水稻在酸性土壤中铝(Al)毒害的栽培方式及其内在机制。【方法】以Al敏感品种Kasalath为试验材料,设置CK,CK+S(硫肥),CK+NaHS(H_(2)S供体),Al,Al+S,Al+NaHS六个盆栽处理,通过测定不同时期水稻体内H_(2)S含量、Al含量、抗氧化系统酶活性,分蘖期根系和光合作用相关指标,明确外源施加硫肥通过调控水稻体内H_(2)S生成缓解Al毒的机制。【结果】与Al处理相比,Al+S处理显著提高水稻体内H_(2)S含量,叶片中的H_(2)S含量在分蘖期和齐穗期分别增加了19.27%和34.99%;根部H_(2)S含量在分蘖期、齐穗期和成熟期分别增加了39.72%、21.08%和30.73%。相比Al处理,Al+S处理显著促进了分蘖期水稻根系的生长,提高了水稻的光合作用能力,同时降低了不同时期水稻根茎叶中的Al含量,在分蘖期分别下降了40.98%、28.47%和24.18%;齐穗期下降了14.58%、50.30%和13.17%;成熟期下降了14.44%、29.78%和8.70%。进一步研究发现,Al+S处理显著增强了水稻体内抗氧化酶(SOD、CAT、APX、POD)的活性,降低了水稻体内过氧化氢(H_(2)O2)、丙二醛(MDA)、超氧阴离子(O_(2)^(-)·)含量,增加了与细胞质Al在液泡中进行分室相关的基因OsALS1以及与修复被Al破坏的细胞壁相关基因OsSTAR1和OsSTAR2的相对表达量。同时,外源施加硫肥还通过调控土壤pH值降低水稻根际土中交换态Al、无机吸附态Al和水溶态Al的含量,增加Al的水合物和氢氧化物的含量。Al+NaHS处理具有同样的效果。【结论】外源增施硫肥能够通过提高水稻体内的H_(2)S含量缓解Al对水稻根系生长和光合作用的抑制,提高抗氧化系统酶活性降低Al对水稻的过氧化损伤,同时促进液泡对水稻细胞质Al的区室化作用,降低细胞壁对Al的吸附或改变土壤中Al的形态,最终降低水稻根系内的Al含量来缓解Al对水稻生长的抑制作用。

关键词：铝胁迫硫酸钾硫化氢抗氧化酶系统水稻

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基于产学协同与研创融合的电气类专业工程教育改革与实践

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广西电力 2024年第2期47卷 44-49页

作者：张镱议贾鹏飞刘捷丰王宇雷钟之华赵一郎广西大学广西南宁530004

传统电气工程教育模式因产学研创体制不完善,导致大学生科研成果转化及创新创业能力不足,人才培养与产业需求脱节,无法培养出协同发展的领军型人才。本文构建了以培养电气领军人才为目标的产学研创一体化体系,通过产学协同和研创融合,... 详细信息

传统电气工程教育模式因产学研创体制不完善,导致大学生科研成果转化及创新创业能力不足,人才培养与产业需求脱节,无法培养出协同发展的领军型人才。本文构建了以培养电气领军人才为目标的产学研创一体化体系,通过产学协同和研创融合,改革并实践电气工程教育,有效解决了工程实践能力、创新创业教育和国际化人才培养的不足,具有重要的理论和实际意义。

关键词：电气类教育改革产学协同研创融合

基于PDH注入锁频的单频连续1064nm环形激光器(特邀)

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光电技术应用 2024年第4期39卷 1-5,15页

作者：秦子涵范文强郭文博王雨雷吕志伟白振旭河北工业大学电子信息工程学院先进激光技术研究中心天津河北省先进激光技术与装备重点实验室天津

单频连续激光器在光纤通信、激光雷达和光谱分析等领域有广泛应用,为了实现理想的单频连续输出,研究了一种基于PDH(Pound-Drever-Hall)注入锁频技术的单频连续1 064 nm的Nd:YVO_(4)环形激光器。实验采用线宽10 k Hz的单频光纤激光器作... 详细信息

单频连续激光器在光纤通信、激光雷达和光谱分析等领域有广泛应用,为了实现理想的单频连续输出,研究了一种基于PDH(Pound-Drever-Hall)注入锁频技术的单频连续1 064 nm的Nd:YVO_(4)环形激光器。实验采用线宽10 k Hz的单频光纤激光器作为种子源,从功率腔采用“8”字环形腔,通过PDH技术实现种子光的注入锁定。实验结果显示,在1.04 W的种子光注入条件下,当泵浦功率为38.12 W时,可实现13.46 W的稳定输出,对应线宽为37.26 kHz,功率稳定度为±0.55%。

关键词： PDH技术单频连续波 1064nm

Hundred-Joule-level,nanosecond-pulse Nd:glass laser system with high spatiotemporal beam quality

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High Power Laser Science and Engineering 2016年第1期4卷 63-74页

作者： Sensen Li yulei wang Zhiwei Lu Lei Ding Yi Chen Pengyuan Du Dexin Ba Zhenxing Zheng Xin wang Hang Yuan Chengyu Zhu Weiming He Dianyang Lin Yongkang Dong Dengwang Zhou Zhenxu Bai Zhaohong Liu Can Cui National Key Laboratory of Science and Technology on Tunable Laser Harbin Institute of Technology Research Center of Laser Fusion China Academy of Engineering Physics

A 100-J-level Nd:glass laser system in nanosecond-scale pulse width has been constructed to perform as a standard source of high-fluence-laser science experiments. The laser system, operating with typical pulse durations of 3–5 ns and beam diameter 60 mm, employs a sequence of successive rod amplifiers to achieve 100-J-level energy at 1053 nm at3 ns. The frequency conversion can provide energy of 50-J level at 351 nm. In addition to the high stability of the energy output, the most valuable of the laser system is the high spatiotemporal beam quality of the output, which contains the uniform square pulse waveform, the uniform flat-top spatial fluence distribution and the uniform flat-top wavefront.

关键词： design frequency conversion laser amplifiers laser engineering laser systems light propagation modeling nonlinear optics optimization wavefront correction

How Emotion Nurtures Mentality:The Influencing Mechanism of Social-Emotional Competency on the Mental Health of University Students

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International Journal of Mental Health Promotion 2024年第4期26卷 303-315页

作者： yulei Chen Zhaojun Chen Shichao wang Yang Hang Jianpeng Guo Institute of Education Xiamen UniversityXiamen361005China Shandong Social Science Education Base Yantai Nanshan UniversityLongkou265706China

Social-Emotional Competency(SEC),regarded as a critical psychological resource for individuals to adapt to social environments,is an effective protective factor for students’mental health,impacting their future success and *** the impact of SEC on university students’mental health can offer valuable insights for nurturing talents with healthy psychological and physical *** on data from two large-scale surveys of Chinese university students,this study designed two comprehensive Multiple Mediation Models involving SEC,stress,coping strategies,and stress reaction to explore the pathway of emotion nurturing *** 1 utilized a parallel mediation model to examine the relationships between SEC,academic stress,interpersonal stress,and stress *** results indicated that SEC negatively predicted academic stress,interpersonal stress,and stress ***,academic and interpersonal stress mediated the relationships between SEC and stress reactions in *** these findings,Study 2 further investigated the role of coping *** constructing a multiple-chain mediation model,it examined the predictive relationships among SEC,academic stress,interpersonal stress,three types of coping strategies,and stress *** findings indicated that SEC negatively predicted stress,problemavoiding strategy,and stress reactions,while positively predicting problem-solving and assistant-seeking ***,the two stress types and three coping strategies significantly mediated the relationship between SEC and stress *** indicated that higher SEC was associated with reduced stress and more adaptive coping strategies and subsequently contributed to more favorable stress *** research explored the impact of university students’SEC on mental health and its relational mechanisms,aiming to provide theoretical reference and practical insights for future efforts in cultivating SEC among uni

关键词： Social-Emotional Competency academic stress interpersonal stress stress reaction coping strategies Multiple Mediation Model

A 115 ps,100 Hz high-beam-quality laser based on transient stimulated Brillouin scattering pulse compression

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High Power Laser Science and Engineering 2023年第6期11卷 39-46页

作者： Jianfeng Yue yulei wang Mengyu Jia Kai Li Chen Cao Yu Yu Yunfei Li Zhiwei Lü Center for Advanced Laser Technology Hebei University of TechnologyTianjinChina Hebei Key Laboratory of Advanced Laser Technology and Equipment TianjinChina

This work demonstrates the generation of short pulse duration and high-beam-quality laser pulses using transient stimulated Brillouin scattering at a high repetition *** effects and optical breakdown are identified as the main factors that restrict energy reflectivity and beam quality under high repetition rates and transient *** experimental analysis,the interaction length and focal point size are determined to be the key parameters in reducing the thermal effect by reducing the absorption of the laser pulse by the *** obtained results show that pulses with a duration of 175 ps and beam quality M^(2)of around 1.2 can be achieved with a maximum energy reflectivity of over 40%under an interaction length of 50 ***,at an interaction length of 90 mm,a pulse output with a minimum duration of 115 ps(0.5τQ)is achieved.

关键词： high beam quality high energy nonlinear optics stimulated Brillouin scattering

Linewidth narrowing in free-space-running diamond Brillouin lasers

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High Power Laser Science and Engineering 2023年第4期11卷 25-32页

作者： Duo Jin Zhenxu Bai Zhongan Zhao Yifu Chen Wenqiang Fan yulei wang Richard P.Mildren Zhiwei Lü Center for Advanced Laser Technology Hebei University of TechnologyTianjinChina Hebei Key Laboratory of Advanced Laser Technology and Equipment TianjinChina MQ Photonics Research Centre Department of Physics and AstronomyMacquarie UniversitySydneyAustralia

This study analyzes the linewidth narrowing characteristics of free-space-running Brillouin lasers and investigates the approaches to achieve linewidth compression and power enhancement *** results show that the Stokes linewidth behavior in a free-space-running Brillouin laser cavity is determined by the phase diffusion of the pump and the technical noise of the ***,a Stokes light output with a power of 22.5 W and a linewidth of 3.2 kHz was obtained at a coupling mirror reflectivity of 96%,which is nearly 2.5 times compressed compared with the linewidth of the pump(7.36 kHz).In addition,the theorical analysis shows that at a pump power of 60Wand a coupling mirror reflectivity of 96%,a Stokes output with a linewidth of 1.6 kHz and up to 80%optical conversion efficiency can be achieved by reducing the insertion loss of the *** study provides a promising technical route to achieve high-power ultra-narrow linewidth special wavelength laser radiations.

关键词： high power narrow linewidth single-frequency laser stimulated Brillouin scattering

李盛华教授运用陇中正骨手法治疗踝关节滑膜嵌顿临证经验撷英

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西部中医药 2024年第4期37卷 34-36页

作者：李毅周明旺陈威付志斌卢冠锦王玉磊魏长浩吕子豪甘肃省中医院甘肃兰州730050 甘肃中医药大学甘肃兰州730030

介绍李盛华教授运用陇中正骨手法治疗踝关节滑膜嵌顿的临床经验,对其治疗该病的临床思路及手法进行系统总结。李盛华教授以“顺于自然、手稳法巧、筋骨相通、内外兼治、身心并重”的理论体系为中心治则,运用“拔、揉、摇、落”的正骨手... 详细信息

介绍李盛华教授运用陇中正骨手法治疗踝关节滑膜嵌顿的临床经验,对其治疗该病的临床思路及手法进行系统总结。李盛华教授以“顺于自然、手稳法巧、筋骨相通、内外兼治、身心并重”的理论体系为中心治则,运用“拔、揉、摇、落”的正骨手法技巧,达到“筋脉归位,骨正筋柔”的治疗目的。

关键词：滑膜嵌顿踝关节陇中正骨手法筋骨失衡临证经验

父职的脱嵌与再嵌:现代社会中的抚育关系与家庭伦理

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中国青年研究 2020年第3期 63-70页

作者：王雨磊华南理工大学公共管理学院华南理工大学国家治理研究中心

现代家庭中的父亲越来越多地参与抚育工作,也越来越被期待承担家庭抚育工作,这既是个人的生活问题,也是社会的伦理问题。原本深嵌于家庭结构与过程中的抚育行为被现代生育制度脱嵌出来,国家、市场与专家系统等将抚育行为重新纳入一个法... 详细信息

现代家庭中的父亲越来越多地参与抚育工作,也越来越被期待承担家庭抚育工作,这既是个人的生活问题,也是社会的伦理问题。原本深嵌于家庭结构与过程中的抚育行为被现代生育制度脱嵌出来,国家、市场与专家系统等将抚育行为重新纳入一个法律化、科学化和专职化的抚育体制中,这使得父亲于法、于理、于情都应该承担抚育职责,而抚育关系的扁平化、多边化和制式化进一步改变了家庭的互动、生态与伦理。父亲参与抚育工作将是今后家庭不可避免、越来越强化的趋势,未来也会有日益多样化的家庭抚育工作模式。

关键词：抚育父职抚育体制家庭与社会关系家庭关系家庭伦理