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On Non-commuting Sets in Certain Finite p-Groups

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Algebra Colloquium 2015年第4期22卷 555-560页

作者： Heguo Liu yulei wang Department of Mathematics Hubei University Wuhan 430062 China vDepartment of Mathematics Henan University of Technology Zhengzhou 450001 China

Let G be a group. A subset X of G is said to be non-commuting if xy ≠ yx for any x, y ∈ X with x ≠ y. If {X}≥ IYI for any other non-commuting set Y in G, then X is said to be a maximal non-commuting set. In this paper, the bound for the cardinality of a maximal non-commuting set in a finite p-group G is determined, where G is a non-abelian p-group given by a central extension as1 → Zp→ G →Zp ×→ × Zp →1 and its derivedsubgroup has order p.

关键词： generalized extraspecial p-group central product non-commuting set

The Automorphism Group of a Finite p-Group with a Cyclic Frattini Subgroup

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Chinese Annals of Mathematics,Series B 2019年第4期40卷 613-642页

作者： Heguo LIU yulei wang Department of Mathematics Hubei UniversityWuhan 430062China Department of Mathematics Henan University of TechnologyZhengzhou 450001China

Let G be a finite p-group with a cyclic Frattini subgroup. In this paper, the automorphism group of G is determined.

关键词： Finite p-groups Frattini subgroups Automorphisms

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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1064nm的Nd:YVO,环形激光器。实验采用线宽10kHz的单频光纤激光器作为种子源... 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1064nm的Nd:YVO,环形激光器。实验采用线宽10kHz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1.04W的种子光注入条件下,当泵浦功率为38.12W时,可实现13.46W的稳定输出,对应线宽为37.26kHz,功率稳定度为±0.55%。

关键词： PDH技术单频连续波 1064nm

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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

NCP-Type Pincer Iridium Complexes Catalyzed Transfer-Dehydrogenation of Alkanes and Heterocycles

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Chinese Journal of Chemistry 2020年第8期38卷 837-841页

作者： yulei wang Lu Qian Zhidao Huang Guixia Liu Zheng Huang State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences345 Lingling RoadShanghai 200032China China School of Chemistry and Material Sciences Hangzhou Institute of Advanced StudyUniversity of Chinese Academy of Sciences1 Sub-lane XiangshanHangzhouZhejiang 310024China Chang-Kung Chuang Institute East China Normal UniversityShanghai 200062China

A series of NCP-type pincer iridium complexes,(RNCCp)IrHCl(2a-2c)and(BQ-NCOP)IrHCl 3,have been studied for catalytic transfer alkane *** 3 containing a rigid benzoquinoline backbone exhibits high activity and robustness in dehydrogenation of alkanes to form *** more importantly,this catalyst system was also highly effective in the dehydrogenation of a wide range of heterocycles to furnish heteroarenes.

关键词： backbone alkanes complexes

Path-following control of autonomous ground vehicles using triple-step model predictive control

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Science China(Information Sciences) 2020年第10期63卷 264-266页

作者： yulei wang Hongyu ZHENG Changfu ZONG Hongyan GUO Hong CHEN State Key Laboratory of Automotive Simulation and Control Jilin University Department of Control Science and Engineering Jilin University

Dear editor,Autonomous ground vehicles (AGVs) equipped with a variety of advanced sensor systems exemplify the recent advances in modern automobile industry and have been receiving significant research interest from academia to industry owing to their prospect to reduce traffic congestion and traffic *** core feature of AGVs refers to any

关键词： Autonomous ground vehicles Model predictive control path following triple-step control constraints

Synthesis and Electrochemical Performance of Co3O4/Graphene

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Chemical Research in Chinese Universities 2014年第4期30卷 650-655页

作者： wang Hongzhi SHI yulei LI Zixuan ZHANG Weiguo YAO Suwei Department of Applied Chemistry School oJ Chemical Engineering and Technology Tianjin University Tianjin 300072 P. R. China

Co3O4/reduced graphene oxide composites were synthesized via a simple electrochemical method from graphene oxide and Co（NO3）2·6H2O as raw ***3O4 nanoparticles with sizes of around 30-50 nm were distributed on the surface of graphene nanosheets confirmed by scanning electron microscopy and transmission electron *** properties of Co3O4/graphene composite were tested by cyclic voltammetry,galvanostatic charge-discharge,and electrochemical impedance *** Co3O4/reduced graphene oxide composite was used as the pseudocapacitor electrode in the 2 mol/L NaOH aqueous electrolyte *** Co3O4/reduced graphene oxide composite electrode exhibited a specific capacitance of 357 F/g at a current density of 0.5 A/g in a three-electrode system.72％ of capacitance was retained when the current density increased to 3 A/*** Co3O4/reduced graphene oxide composite prepared electrodes show a high rate capability and excellent long-term *** 1000 cycles of charge and discharge,the capacitance is still maintained 87％ at a current density of 1 A/g,indicating that the composite is a oromising alternative electrode material used for supercapacitors.

关键词： Cobalt oxide Graphene Composite Electrochemical preparation Supercapacitor

Structure and Mechanical Performance of Nitrogen Doped Diamond-like Carbon Films

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Journal of Materials Science & Technology 2007年第4期23卷 491-494页

作者： Huayu ZHANG Liang-xue LIU yulei wang Hongtao MA Fanxin LIU Harbin Institute of Technology Shenzhen Graduate School Shenzhen518055 China SAE Technologies Development （Dongguan） Co. Ltd. Dongguan 523087 China

Nitrogen doped diamond-like carbon （DLC：N） films were prepared by electron cyclotron resonance chemical vapor deposition （ECR-CVD） on polycrystalline Si chips. Film thickness is about 50 nm. Auger electron spectroscopy （AES） was used to evaluate nitrogen content, and increasing N2 flow improved N content from 0 to 7.6%. Raman and X-ray photoelectron spectroscopy （XPS） analysis results reveal CN-sp^3C and N-sp^2C structure. With increasing the N2 flow, sp^3C decreases from 73.74% down to 42.66%, and so does N-sp^3C from 68.04% down to 20.23%. The hardness decreases from 29.18 GPa down to 19.74 GPa, and the Young＇s modulus from 193.03 GPa down to 144.52 GPa.

关键词： Nitrogen doped diamond-like carbon films ECR-CVD Structure Mechanical performance

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