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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

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学习共同体对大学生社会情感能力的影响机制研究

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重庆高教研究 2024年第3期12卷 82-96页

作者：陈兆军王仕超陈玉蕾李人杰郭建鹏厦门大学教育研究院厦门361005 烟台南山学院山东省社科普及教育基地龙口265706

社会情感能力是个体获得全面发展、适应和服务社会的必备技能。学习共同体作为一种高影响力的教育活动,以师生互动和同伴互动为主要作用形式,对大学生能力发展产生赋权增能的社群效应。探讨学习共同体对促进大学生社会情感能力发展的作... 详细信息

社会情感能力是个体获得全面发展、适应和服务社会的必备技能。学习共同体作为一种高影响力的教育活动,以师生互动和同伴互动为主要作用形式,对大学生能力发展产生赋权增能的社群效应。探讨学习共同体对促进大学生社会情感能力发展的作用机制,可为提升本科人才培养质量提供行动指南。鉴于学生个体嵌套于学校环境,通过建构多水平结构方程模型,以107所本科高校的127 512名本科生样本为研究对象,从个体水平和学校水平出发考察学习共同体体验、学习共同体投入两个维度(师生互动与同伴互动)对大学生社会情感能力的影响。研究发现,学习共同体体验在个体水平和学校水平上均显著直接预测社会情感能力。在个体水平上,学习共同体通过师生互动和同伴互动的中介作用间接预测社会情感能力;在学校水平上,师生互动在学习共同体体验和社会情感能力之间发挥显著的中介效应,而同伴互动发挥的中介效应不显著。相比而言,学校水平上的师生互动、个体水平上的同伴互动更能积极预测社会情感能力。基于此,参与学习共同体是大学生锻炼和提升社会情感能力的重要途径,高校需要继续加大对学习共同体环境的支持力度,构建同向而行的师生互动关系和同伴互动关系,努力营造良好的社会情感教育氛围。

关键词：社会情感能力大学生学习共同体多水平结构方程模型

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透明质酸对南美白对虾虾糜理化性质和凝胶特性的影响

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食品科学 2024年第12期45卷 78-89页

作者：尹开平林端权陈玉磊张凌晶何文雄翁凌曹敏杰孙乐常集美大学海洋食品与生物工程学院福建厦门361021 水产品深加工技术国家地方联合工程研究中心福建厦门361021 海洋食品精深加工关键技术省部共建协同创新中心辽宁大连116034 厦门爱逸零食研究所有限公司福建厦门361021

以南美白对虾(Litopenaeus vannamei)虾糜为研究对象,考察不同添加量(0.1%、0.3%、0.5%、0.8%和1.0%,以虾肉的质量计)透明质酸(hyaluronic acid,HA)对虾糜凝胶特性和理化性质的影响。结果显示,一定量HA能够改善虾糜凝胶的质构特性和凝... 详细信息

以南美白对虾(Litopenaeus vannamei)虾糜为研究对象,考察不同添加量(0.1%、0.3%、0.5%、0.8%和1.0%,以虾肉的质量计)透明质酸(hyaluronic acid,HA)对虾糜凝胶特性和理化性质的影响。结果显示,一定量HA能够改善虾糜凝胶的质构特性和凝胶强度,提高虾糜凝胶的亮度和白度。适量添加HA还能够促使虾糜凝胶内部自由水和不易流动水向结合水转变,改善虾糜凝胶的水结合特性,提高持水性(water-holding capacity,WHC)。流变学分析表明,一定量HA能使虾糜的储能模量提高,然而低添加量HA会对表观黏度产生不利影响。化学作用力分析表明,离子键和氢键随HA的添加分别呈现先减后增和先增后减的变化趋势,适量HA可以改善疏水相互作用,巯基氧化形成二硫键的过程则被HA抑制。HA还能与虾糜蛋白相互作用,抑制蛋白多聚体的形成,改变蛋白质的构象,促使蛋白质二级结构从α-螺旋向β结构和无规卷曲转变。添加适量HA对虾糜凝胶微观结构同样有所改善,促使虾糜凝胶形成更加均匀致密的微观结构。其中,添加0.8%HA虾糜凝胶具有最高的硬度、咀嚼性、胶着性、凝胶强度以及储能模量和最致密的微观结构,WHC较对照组也显著提高(P<0.05)。而添加0.1%HA虾糜凝胶的质构特性、凝胶强度、WHC、储能模量均较对照组有所降低,微观结构也较为松散。

关键词：南美白对虾虾糜透明质酸凝胶特性理化性质

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蓝圆鲹分离蛋白酶解产物的制备及其抗大米淀粉老化特性

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水产学报 2024年第4期48卷 376-390页

作者：孙乐常孙小舒林端权陈玉磊翁凌缪松曹敏杰集美大学海洋食品与生物工程学院集美大学水产品深加工技术国家地方联合工程研究中心大连工业大学海洋食品精深加工关键技术省部共建协同创新中心爱尔兰农业部农业与食品发展局Teagasc食品研究中心

为了进一步拓展海洋鱼类蛋白在食品中的应用，以蓝圆鲹分离蛋白为原料，利用酶解改性得到溶解性良好的蓝圆鲹分离蛋白酶解物(BPIH)，并研究其对大米淀粉(RS)短期老化的抑制作用。通过响应面法优化酶解改性工艺制备BPIH，并分别按RS的3%... 详细信息

为了进一步拓展海洋鱼类蛋白在食品中的应用，以蓝圆鲹分离蛋白为原料，利用酶解改性得到溶解性良好的蓝圆鲹分离蛋白酶解物(BPIH)，并研究其对大米淀粉(RS)短期老化的抑制作用。通过响应面法优化酶解改性工艺制备BPIH，并分别按RS的3%、6%、9%(质量百分比)进行添加。通过测定RS的凝沉性、动态黏弹性、热学特性以及微观结构分析评价BPIH的抗淀粉老化活性。结果显示，响应面法确定的最佳条件：酶底比5 000∶1 (U/g)、酶解时间3 h、料液比1.00∶3.81、酶解温度46.36℃、酶解pH 6.30，氮溶指数(NSI)实际值为85.41%±0.82%，与预测值86.37%接近。该酶解条件下BPIH水解度达到21.62%。BPIH中小于1 000 u的肽占79.94%，主要为小分子低聚寡肽。加入BPIH可以减弱RS的凝沉现象，降低RS在4℃保存过程中的储能模量(G')，显著降低老化后RS的峰值温度(Tp)和焓值(ΔHr)；加入BPIH的大米淀粉，老化后微观结构有较大孔洞，提升了淀粉糊化后保留内部水分的能力。研究表明，BPIH能够抑制RS在4℃保存期间凝胶网络和微晶结构的形成，同时可能限制了淀粉分子间的聚集，抑制或延缓RS的短期老化。本研究为蓝圆鲹分离蛋白酶解物在食品蛋白配料中的应用提供理论参考。

关键词：蓝圆鲹分离蛋白酶解淀粉短期老化

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Identification of a chitinase from the hepatopancreas of Chinese black sleeper(Bostrychus sinensis)

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Acta Oceanologica Sinica 2021年第6期40卷 50-60页

作者： yulei chen Zhipeng Tao Minghui Zhang Lechang Sun Guangming Liu Minjie Cao College of Food and Biological Engineering Jimei UniversityXiamen 361021China Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources Xiamen 361102China

Chinese black sleeper(Bostrychus sinensis)is a fish that lives both in seawater and freshwater,feeds on crustaceans,aquatic insects and occasionally *** existence of digestive enzyme in viscera to act on chitinous exoskeleton of the prey is of *** this study,a chitinase was purified to homogeneity using ammonium sulfate precipitation,DEAE-Sephacel ion exchange,Sephacryl S-200 HR and Superdex 200 gel filtration *** purified protein presents a molecular mass of 58 kDa as determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis(SDS-PAGE)and results in a single band on native *** to peptide mass fingerprinting,two peptides containing a total of 20 amino acid residues,were 95%identical to a chitinase from yellow perch(Perca flavescens)and 100%identical to the chitinase from greater amberjack(Seriola dumerili).The purified chitinase showed optimum activity at pH 6.0,and was stable at acidic conditions and temperature below 55℃.The enzymatic activity was quite stable in the presence of NaCl,even at 1 mol/*** chitinase was capable of degrading chitosan into low molecular mass chitooligosaccharides(COS)with sizes in a range of 200-700 Da,and the circular dichroism profile of the COS greatly differed from native ***-length cDNA encoding the present chitinase was cloned and the transcript levels of chitinase in various tissues were determined by quantitative real-time *** results showed that the transcript level of chitinase was highest in esophagus and hepatopancreas.

关键词： Bostrychus sinensis chitinase purification characterization molecular cloning chitosan

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成核剂ST-NAB3改性扩链聚乳酸的微观结构与性能研究

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中国塑料 2024年第9期38卷 41-46页

作者：丁馨怡顿东星秦骏熙陈钰蕾韩羽菲张玉霞周洪福北京工商大学轻工科学与工程学院北京100048 中国轻工业聚合物发泡材料加工与应用重点实验室北京100048

使用转矩流变仪将扩链剂CEAX8840、成核剂ST-NAB3与PLA熔融共混制备改性PLA,采用扫描电子显微镜、偏光热台显微镜、差示扫描量热仪、热变形仪、万能试验机以及冲击测试仪对改性PLA微观结构、结晶性能以及力学性能和耐热性进行了表征与... 详细信息

使用转矩流变仪将扩链剂CEAX8840、成核剂ST-NAB3与PLA熔融共混制备改性PLA,采用扫描电子显微镜、偏光热台显微镜、差示扫描量热仪、热变形仪、万能试验机以及冲击测试仪对改性PLA微观结构、结晶性能以及力学性能和耐热性进行了表征与测试。结果表明,CEAX8840和ST-NAB3的含量分别为6%(质量分数,下同)和1%时,PLA的晶体最小,密度最大,结晶温度提高到123.9°C,结晶度达到44.9%;此外,其冲击强度和热变形温度分别提高到了64.7 kJ/m2和84.9℃。

关键词：聚乳酸扩链剂成核剂冲击强度热变形温度

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葡萄糖糖基化对蓝圆鲹分离蛋白限制性酶解产物结构及功能特性的影响

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南方水产科学 2024年第3期20卷 152-163页

作者：吴雨虹林端权刘康陈玉磊张凌晶何文雄孙乐常集美大学海洋食品与生物工程学院福建厦门361021 水产品深加工技术国家地方联合工程研究中心福建厦门361021 海洋食品精深加工关键技术省部共建协同创新中心辽宁大连116034 厦门爱逸零食研究所有限公司福建厦门361021

为拓展蓝圆鲹(Decapterus maruadsi)分离蛋白的应用范围,促进其高值化利用,以蓝圆鲹分离蛋白限制性酶解产物(Brown-striped mackerel scad protein isolate limited enzymatic hydrolysate,BPILH)为原料,采用葡萄糖对其进行糖基化反应,考察不同反应时间对BPILH结构与功能特性的影响。结果表明,葡萄糖与BPILH的糖基化反应程度与反应时间和色度呈正相关。结构表征结果显示,糖基化反应使α螺旋和无规则卷曲含量减少,并降低糖基化产物的内源荧光强度。此外,长时间的高温使蛋白质分子内部的疏水基团暴露,使其表面疏水性增加。溶解度在酸性、碱性条件下随着反应时间的延长呈现先升高后降低的趋势,其中,第8小时糖基化产物的溶解度在pH 10时达到最高值(90.49±0.01)%。乳化性随着反应时间的延长而增加,与第0小时相比,第12小时糖基化产物的乳化性提升了24.28%,乳化稳定性和持油性均随着反应时间的延长呈现先增加后减少的趋势,在第1小时乳化稳定性达到最高值(17.51±0.13)min,在第2小时持油性达到最高值(2.19±0.21)g·g^(-1)。因此,反应时间过长会对功能特性产生一定的负面影响,研究结果可为蓝圆鲹分离蛋白在食品配料蛋白中的应用提供一定的理论参考。

关键词：蓝圆鲹分离蛋白限制性酶解糖基化结构特性功能特性

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Initial precursor reaction mechanism of CVD-HfC coating based on density functional theory

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Chinese Journal of Aeronautics 2024年第7期37卷 511-521页

作者： Yunzhou LIN yulei ZHANG Yanqin FU Jian ZHANG Jing’an KONG Ruicong chen State Key Laboratory of Solidification Processing Carbon/Carbon Composites Research CenterNorthwestern Polytechnical UniversityXi’an 710072China Henan Key Laboratory of High Performance Carbon Fiber Reinforced Composites Carbon Matrix Composites Research InstituteHenan Academy of SciencesZhengzhou 450046China

Recently,the preparation of ultra-high temperature HfC ceramic coating has gained significant attention,particularly through the application of the HfCl_(4)-CH_(4)-H_(2)-Ar system via Chemical Vapor Deposition(CVD),which has been found widely applied to C/C ***,an analysis of the reactions that occur in the initial stage of the CVD-HfC coating process is presented using Density Functional Theory(DFT)and Transition State Theory(TST)at the B3LYP/Lanl2DZ *** results reveal that HfCl4 can only cleave to produce hypochlorite,which will further react with methyl to synthesize intermediates to form *** to the analysis of the energy barrier and reaction constant,HfCl preferentially reacts with methyl groups to form complex adsorptive intermediates at 1573 *** a C—Hf bond production energy of 212.8 kcal/mol(1 kcal=4.18 kJ),the reaction rate constant of HfCl+CH is calculated to be 2.15×10^(-18) cm^(3)/s at 1573 ***,both the simulation and experimental results exhibit that the upward trend of reaction rate constants with temperature is also consistent with the deposition rate,indicating that the growth curve of the reaction rate constants tends to flatten *** proposed reaction model of the precursor’s decomposition and reconstruction during deposition process has significant implication for the process guidance.

关键词： Carbon composite HfC coating Chemical vapor deposition Density functional theory Precursor reaction mechanism

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Novel Hf_(x)Ta_(1−x)C solid solution nanowire toughened HfC coating:An effective strategy for synchronous enhanced mechanical and anti-ablation performance

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Journal of Advanced Ceramics 2024年第5期13卷 590-601页

作者： Hui chen yulei Zhang Yanqin Fu Wenhan Gai Junhao Zhao Haohui Zhang Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials Northwestern Polytechnical UniversityXi’an 710072China Henan Key Laboratory of High Performance Carbon Fiber Reinforced Composites Institute of Carbon Matrix CompositesHenan Academy of SciencesZhengzhou 450046China

Ultra-high-temperature ceramic nanowires have shown increasing potential for use as thermal structural ***,novel single-crystal Hf_(0.5)Ta_(0.5)C solid solution nanowires were synthesized and incorporated with a HfC coating to construct a robust structure with Hf_(0.5)Ta_(0.5)C solid solution nanowires uniformly distributed and interconnected within the *** novel Hf_(0.5)Ta_(0.5)C solid solution nanowires could effectively hinder crack propagation through crack tip pinning and crack *** mechanism substantially enhanced the elastic modulus and fracture toughness of the HfC coating by 53.29%and 59.67%,*** toughened HfC coating displayed superior fracture toughness and good interfacial binding strength with the substrate to resist severe oxidation and ***,the high thermal conductivity of the toughened HfC coating promoted heat ***,in comparison to the pure HfC coating,the toughened HfC coating displayed smaller mass and linear ablation rates of−0.35 mg·s^(−1)and−0.46μm·s^(−1),which decreased by 39.66%and 36.98%,*** work not only simultaneously enhances the mechanical properties and ablation resistance of HfC-coated carbon/carbon(C/C)composites but also provides novel prospects for advanced ultrahigh-temperature ceramic nanowires under extreme conditions.

关键词： Hf_(x)Ta_(1−x)C solid solution nanowires HfC coating carbon/carbon(C/C)composites mechanical performance ablationresistance

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Characteristics and suppression of beam distortion in a high repetition rate nanosecond stimulated Brillouin scattering phase conjugation mirror

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High Power Laser Science and Engineering 2024年第2期12卷 69-78页

作者： Yifu chen Bowen Tan Duo Jin Bin chen Zhenxu Bai Kun Wang yulei Wang Zhiwei Lü School of Astronautics Harbin Institute of TechnologyHarbinChina Center for Advanced Laser Technology Hebei University of TechnologyTianjinChina Hebei Key Laboratory of Advanced Laser Technology and Equipment TianjinChina School of Energy and Environmental Engineering Hebei University of TechnologyTianjinChina

The stimulated Brillouin scattering phase conjugation mirror (SBS-PCM) based on liquid media is widely used in high-power laser systems due to its robust thermal load capacity, high energy conversion efficiency and improved beam quality. Nevertheless, with an increase in the pump repetition rate, thermally-induced blooming and optical breakdown can emerge, leading to distortions in the Stokes beam. In this study, we delved into the thermal effects in liquid SBS-PCMs employing hydrodynamic analysis, establishing a relationship between beam profile distortion and the thermal convection field. We calculated the temperature and convection velocity distribution based on the pump light parameters and recorded the corresponding beam profiles. The intensities of the beam profiles were modulated in alignment with the convection directions, reaching a velocity peak of 2.85 mm/s at a pump pulse repetition rate of 250 Hz. The residual sum of squares (RSS) was employed to quantify the extent of beam profile distortion relative to a Gaussian distribution. The RSS escalated to 7.8, in contrast to 0.7 of the pump light at a pump pulse repetition rate of 500 Hz. By suppressing thermal convection using a high-viscosity medium, we effectively mitigated beam distortion. The RSS was reduced to 0.7 at a pump pulse repetition rate of 500 Hz, coinciding with a twentyfold increase in viscosity, thereby enhancing the beam quality. By integrating hydrodynamic analysis, we elucidated and mitigated distortion with targeted solutions. Our research offers an interdisciplinary perspective on studying thermal effects and contributes to the application of SBS-PCMs in high-repetition-rate laser systems by unveiling the mechanism of photothermal effects.

关键词： beam profile high power high repetition rate stimulated Brillouin scattering phase conjugation mirror thermal convection

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