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SEBS与常用单质炸药的相容性研究
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作者 杨巍璐 宋秀铎 +3 位作者 陈旭 付康 袁志锋 裴江峰 《爆破器材》 CAS CSCD 北大核心 2024年第4期28-36,共9页
将分子动力学(MD)模拟方法中理论键长变化趋势与差示扫描量热法(DSC)测得的分解温度变化情况相结合,分析了热塑性弹性体氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物(SEBS)与推进剂中常用的单质炸药黑索今(RDX)、奥克托今(HMX)、六硝基六氮杂异... 将分子动力学(MD)模拟方法中理论键长变化趋势与差示扫描量热法(DSC)测得的分解温度变化情况相结合,分析了热塑性弹性体氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物(SEBS)与推进剂中常用的单质炸药黑索今(RDX)、奥克托今(HMX)、六硝基六氮杂异伍兹烷(CL-20)之间的相容性。MD模拟结果表明:RDX、HMX、CL-20与SEBS共混体系的引发键最大键长随温度的升高而增加,与单质炸药单组分体系相比均没有明显的变化,推测SEBS与RDX、HMX、CL-20共混后稳定性较好,不易发生引发键的断裂。DSC结果中,RDX、HMX、CL-20与SEBS共混后,热分解温度变化均在3℃以内,表明SEBS与RDX、HMX和CL-20之间相容性好。进一步,选择相容性差的二号中定剂(C2)和3,4-二硝基呋咱基氧化呋咱(DNTF)作为对照体系,进行MD模拟和DSC分析发现,引发键最大键长明显增加,DSC热分解温度提前了70℃以上,验证了引发键键长预测相容性优劣的可行性。 展开更多
关键词 分子动力学模拟 氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物 单质炸药 固体推进剂 相容性
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Maternal Burnout: Prevalence and Associated Factors in Northern Benin (2023)
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作者 Ireti Nethania Elie Ataigba Guy Gérard Aza Gnandji +6 位作者 David Sinet Koivogui Owèrè Charlotte Dagan Coovi Ignace Tokpanoude Kwamé Abdias Adoufou Anselme Djidonou Francis Tognon Tchegnonsi Prosper Gandaho 《Open Journal of Psychiatry》 2024年第1期29-44,共16页
Introduction: Also known as maternal burnout syndrome, maternal burnout is a state of physical, emotional and mental exhaustion generated by prolonged stress in the family environment. It is experienced by women in th... Introduction: Also known as maternal burnout syndrome, maternal burnout is a state of physical, emotional and mental exhaustion generated by prolonged stress in the family environment. It is experienced by women in their role as mothers. Those affected can develop psychological disorders, sleep disturbances, etc., all of which impair their day-to-day lives, and thus their maternal role. The repercussions affect both the child and other family members. Objective: The aim of the present study was to investigate maternal burnout among female users of public and private health facilities in the commune of Parakou in 2023. Methods: Descriptive cross-sectional study was conducted from December 2022 to July 2023 among all mothers using public and private health facilities in the commune of Parakou. All healthy mothers with at least one biological or adoptive child fully dependent on them and living at home, who came for a consultation in one of the health facilities or for an appointment at the Expanded Program on Immunization (EPI) and gave their free and informed consent. Sampling was done for non-exhaustive convenience were included in the study. Burnout was assessed using the Parental Burnout Assessment (PBA) scale. Results: A total of 888 mothers meeting the inclusion criteria were surveyed. The prevalence of burnout calculated using the Parental Burnout Assessment (PBA) scale was 6.19%. The risk factors for maternal burnout were poor relationships with family and friends (OR = 8.90;p = 0.045), moderate (OR = 11.71;p = 0.020) and severe depression (OR = 40.85;p = 0.001), followed by the presence of repeated nocturnal awakening (OR = 5.14;p = 0.014). Conclusion: This is a subject that is almost never discussed in African society, but whose reality is revealed by the present study, which provided statistical data on maternal burnout. From now on, the risk of burnout will no longer be discussed solely in the family context. It will also need to be explored within the family unit to prevent its deleterious consequences for children and adults alike. 展开更多
关键词 burnout MATERNAL BENIN 2023
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The Influence of Preschool Teachers’Social Skills on Job Burnout:A Moderated Mediation Model
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作者 Yuanqing He Xinyue Yu +1 位作者 Yu Xia Yanhua Cao 《International Journal of Mental Health Promotion》 2024年第6期463-474,共12页
Background:Teacher burnout is a serious issue in the field of education,particularly in early childhood education,where teachers face high levels of work stress and emotional labor,leading to emotional exhaustion and ... Background:Teacher burnout is a serious issue in the field of education,particularly in early childhood education,where teachers face high levels of work stress and emotional labor,leading to emotional exhaustion and job burnout.However,past research has not sufficiently explored the mechanisms of social skills,empathy,and mindfulness in mitigating teacher burnout.Therefore,this study aims to investigate the relationship between preschool teachers’social skills,empathy,and mindfulness with job burnout,in order to provide theoretical basis and practical guidance for reducing teacher burnout.Methods:This research utilized a convenience sampling approach to target preschool teachers for a questionnaire survey.A total of 1109 questionnaires were collected.To ensure the quality of the data,we excluded questionnaires that were not carefully filled out in terms of lie scale questions,those with abnormal demographic variables,and outliers identified based on response time.Ultimately,901 valid questionnaires were obtained,achieving a valid response rate of 81.2%.Participants’levels of social skills,empathy,mindfulness,and job burnout were assessed using the Social Skills Scale(SKS),Empathy Scale(Measure of Empathy,ME),Mindful Attention Awareness Scale(MAAS),and the Maslach Burnout Inventory-Educators Survey(MBI-ES),respectively.Data analysis was conducted using SPSS.Results:After controlling for gender,age,teaching experience,educational level,grade taught,and location of the kindergarten,the study found:(1)There is a negative correlation between preschool teachers’social skills and the level of job burnout(r=−0.238);(2)Empathy has a dual-track effect on job burnout,where cognitive empathy negatively affects job burnout(r=−0.245),while emotional empathy has a positive effect(r=0.045);(3)Cognitive empathy partially mediates the relationship between social skills and job burnout(β=−0.124);(4)Mindfulness significantly impacts social skills,cognitive empathy,and job burnout(r=0.278;r=0.286;r=−0.539),and plays a moderating role in the mediation model(β=0.003;β=−0.023).Conclusion:These findings provide theoretical support for the development of burnout prevention and intervention strategies targeted at preschool teachers.They also point out new directions for future research and potential intervention targets,suggesting that enhancing preschool teachers’social skills and cognitive empathy,as well as increasing their mindfulness level,can help them cope with work-related stress and emotional labor,thereby alleviating job burnout. 展开更多
关键词 Social skills job burnout EMPATHY MINDFULNESS preschool teachers
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The Influence of Swimming Athletes’ Burnout on Their Sports Participation Motivation in Hunan, China
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作者 Lejia Ou 《Journal of Contemporary Educational Research》 2024年第3期179-186,共8页
Objective:This study aims to explore the effect of swimming athletes’burnout on their sports motivation in Hunan University,China.It seeks to understand how burnout influences various motivational factors,providing i... Objective:This study aims to explore the effect of swimming athletes’burnout on their sports motivation in Hunan University,China.It seeks to understand how burnout influences various motivational factors,providing insights for optimizing swimming sports courses and enhancing student participation.Method:Employing random sampling,the study surveyed 260 swimming athletes from Hunan University.The research utilized a questionnaire divided into three parts:demographic information,the Athlete Burnout Questionnaire(ABQ),and the Intrinsic Motivation Inventory(IMI).Pearson’s r correlation analysis was conducted using SPSS to examine the relationships between burnout dimensions and motivational factors.Results:The study found significant correlations between a reduced sense of accomplishment and various motivational dimensions,including“interest/enjoyment,”“perceived competence,”“perceived choice,”and particularly“perceived tension.”Physical exhaustion showed a significant correlation only with“perceived tension,”indicating a strong link between psychological stress and physical fatigue.Sports devaluation was significantly correlated with“perceived tension,”suggesting that psychological stress impacts athletes’valuation of their sport.Conclusion:The findings highlight the complex interplay between burnout and motivation in swimming athletes.Psychological stress,as indicated by“perceived tension,”emerges as a key factor influencing both the physical and emotional aspects of burnout.The study underscores the need for holistic training approaches that balance physical training with psychological well-being,personalized coaching,and supportive environments to enhance intrinsic motivation and manage stress effectively. 展开更多
关键词 Swimmer Sports participation motivation Athletes’burnout
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基于衬底材料优化的抗辐射功率器件SEB加固技术 被引量:1
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作者 徐政 郑若成 +3 位作者 吴素贞 徐海铭 廖远宝 唐新宇 《电子与封装》 2023年第4期69-74,共6页
在外延层和衬底之间增加缓冲层能够提高器件的二次击穿电压,从而提高器件的单粒子烧毁(SEB)阈值电压。仿真对比了抗辐射加固纵向扩散金属氧化物场效应管(VDMOS)的单层缓冲层和掺杂线性梯度变化缓冲层的二次击穿特性和电场分布。在掺杂... 在外延层和衬底之间增加缓冲层能够提高器件的二次击穿电压,从而提高器件的单粒子烧毁(SEB)阈值电压。仿真对比了抗辐射加固纵向扩散金属氧化物场效应管(VDMOS)的单层缓冲层和掺杂线性梯度变化缓冲层的二次击穿特性和电场分布。在掺杂突变的缓冲层/N^(+)衬底界面位置,线性缓冲层的电场为1.7×10^(5)V/cm,单层缓冲层的电场为2.4×10^(5)V/cm。^(181)Ta粒子辐射试验验证了掺杂线性梯度变化缓冲层的SEB阈值电压优于单层缓冲层,线性缓冲层样品的SEB阈值电压大于250 V,单层缓冲层样品的SEB阈值电压为150~200 V。 展开更多
关键词 功率VDMOS seb 缓冲层 抗辐射加固
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PEPAP阻燃剂的制备及其在SEBS/PP/PP-g-MMA复合材料中的应用
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作者 穆娟 孙贺霞 +2 位作者 张文龙 戴亚杰 吴涛 《塑料》 CAS CSCD 北大核心 2023年第6期173-178,共6页
通过季戊四醇磷酸酯(PEPA)化学取代六氯环三磷腈(HCCP)分子上的氯,制备了六环三磷腈无卤高效膨胀型阻燃剂,研究了制备的时间、温度及溶剂极性等工艺参数,并采用红外光谱(IR)和热失重分析(TGA)对产物的结构及稳定性进行表征;同时,研究了P... 通过季戊四醇磷酸酯(PEPA)化学取代六氯环三磷腈(HCCP)分子上的氯,制备了六环三磷腈无卤高效膨胀型阻燃剂,研究了制备的时间、温度及溶剂极性等工艺参数,并采用红外光谱(IR)和热失重分析(TGA)对产物的结构及稳定性进行表征;同时,研究了PEPAP/SEBS/PP/PP-g-MMA无卤阻燃材料的燃烧性能、宏观碳层形貌、体积电阻率(ρv)、力学性能等。结果表明,PEPAP的最佳制备条件为以无水乙腈为溶剂、温度为74℃、时间为12 h;产物的红外谱分析结果表明,560 cm^(-1)处的P—Cl谱峰消失,1030 cm^(-1)处P—O—C峰面积增加,氯被取代完全;TGA热分析结果表明,320℃时,P—N=P和磷酸酯基分解,520℃时,磷酸盐分解,残碳率为15.0%,其阻燃性能较好;加入PEPAP后,无卤阻燃材料的氧指数(LOI)显著提高,体积电阻率先增大后降低,力学性能降低;当PEPAP含量为25%时,材料的LOI为30%、燃烧性能可达UL 94 V-0水平,阻燃性能明显提高;电阻率可达7×10^(14)Ω·m,断裂伸长率为1000%,拉伸强度为18 MPa。 展开更多
关键词 阻燃性能 制备工艺 PEPAP sebS/PP 热失重
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基于NPP VIIRS数据和SEBS模型的河南省冬小麦蒸散量估算与时空特征
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作者 李颖 陈怀亮 +2 位作者 梁辰 苏伟 贺添 《中国生态农业学报(中英文)》 CAS CSCD 北大核心 2023年第4期587-597,共11页
农田蒸散量(evapotranspiration,ET)是农田水热交换过程的关键变量,准确估算农田ET对了解农田土壤水分变化动态,监测预测作物旱情,指导科学灌溉等具有重要作用。将Suomi NPP(National Polar-orbiting Partnership)卫星的新型遥感数据源... 农田蒸散量(evapotranspiration,ET)是农田水热交换过程的关键变量,准确估算农田ET对了解农田土壤水分变化动态,监测预测作物旱情,指导科学灌溉等具有重要作用。将Suomi NPP(National Polar-orbiting Partnership)卫星的新型遥感数据源可见光红外成像辐射仪(visible infrared imaging radiometer suite,VIIRS)数据用于ET反演,基于地表能量平衡理论,将NPP VIIRS反演的地表温度、地表反照率等参数和优化计算的VIIRS NDVI(normalized difference vegetation index)数据,与SRTM DEM数据和气象观测数据输入地表能量平衡系统(surface energy balance system,SEBS)模型,估算了2016—2018年河南省冬小麦关键生育时期——返青期至灌浆期的农田ET(VIIRS ET)。分别对比了VIIRS ET与彭曼公式(Penman-Monteith,P-M)计算的P-M ET、大型土壤蒸渗仪实测Real ET和MODIS(moderate-resolution imaging spectroradiometer)数据估算ET(MODIS ET)的结果,并进行了ET时空变化特征分析。结果表明,VIIRS ET与Real ET的RMSE为0.203 mm·d^(–1),且VIIRS ET与P-M ET和MODIS ET均具有较高的一致性。该方法可为利用NPP VIIRS数据和SEBS模型估算ET提供方法、技术上的支持。研究区冬小麦关键生育时期ET的时间特征表现为自返青期后逐日上升,抽穗期达到最大值,灌浆期开始下降的趋势,与冬小麦生长发育规律具有较好的一致性。综合空间特征来看,在关键生育时期河南省冬小麦ET均呈现中部和东南部较高,向西北部和西南部逐渐降低的趋势,与灌溉条件具有较强的对应性。河南省冬小麦ET时空特征可为河南省农业水资源管理、分配和高效利用等提供重要依据。 展开更多
关键词 河南省 冬小麦 蒸散量 地表能量平衡系统(sebS) NPP VIIRS数据
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基于正交试验的纳米ZnO/SEBS复合改性沥青性能
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作者 钟曦 苏延桂 +2 位作者 刘延金 王青志 严德超 《科学技术与工程》 北大核心 2023年第25期10965-10974,共10页
为使改性沥青混合料具有良好的性能,能够在一些极端环境下正常使用,选择纳米ZnO和苯乙烯-乙烯-丁二烯-苯乙烯(styrene-ethylene-butadiene-styrene,SEBS)两类改性剂复合对70号沥青进行改性。利用正交试验对复合改性沥青的制备方案进行优... 为使改性沥青混合料具有良好的性能,能够在一些极端环境下正常使用,选择纳米ZnO和苯乙烯-乙烯-丁二烯-苯乙烯(styrene-ethylene-butadiene-styrene,SEBS)两类改性剂复合对70号沥青进行改性。利用正交试验对复合改性沥青的制备方案进行优化,并通过布氏旋转黏度、针入度、延度、软化点和高低温流变等实验,对纳米ZnO、SEBS、纳米ZnO/SEBS改性沥青以及基质沥青的黏滞性、温度敏感性、高低温流变性能以及性能分级(performance grading,PG)进行比较分析,以此确定最优配方。试验结果表明,纳米ZnO/SEBS复合改性沥青最优制备改性剂掺量为3%纳米ZnO+5%SEBS,最优制备方案为先加SEBS后加纳米ZnO;此掺量复合改性沥青的温度敏感性显著降低,低温抗裂性能以及PG连续分级的高低温服务温度范围均有明显改善,对沥青高温性能提升最为显著。 展开更多
关键词 道路工程 纳米ZNO sebS 复合改性沥青 沥青流变性能 PG分级
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SEBS远程接枝季铵阳离子阴离子交换膜的研究
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作者 李京 李聪会 王芳辉 《膜科学与技术》 CAS CSCD 北大核心 2023年第2期95-103,共9页
在氢化苯乙烯-丁二烯嵌段共聚物(SEBS)上通过傅克酰基化和羰基还原合成了纯度为94.2%的溴己基化SEBS聚合物(SEBS-C6-Br),再用三甲胺经过季铵化反应制备了SEBS-C6-TAM膜,对聚合物及膜的结构和性能进行了表征.结果表明,SEBS-C6-TAM在80℃... 在氢化苯乙烯-丁二烯嵌段共聚物(SEBS)上通过傅克酰基化和羰基还原合成了纯度为94.2%的溴己基化SEBS聚合物(SEBS-C6-Br),再用三甲胺经过季铵化反应制备了SEBS-C6-TAM膜,对聚合物及膜的结构和性能进行了表征.结果表明,SEBS-C6-TAM在80℃可达到110.4 mS/cm的OH^(-)传导率,经过4 mol/L NaOH溶液浸泡1800 h后,氢氧根离子传导率只降解14.72%.惊喜的是,制备溴己基化SEBS过程中降低了出现凝胶化的现象,为SEBS聚合物改性提供了另一种有效途径. 展开更多
关键词 sebS 傅克酰基化 远程接枝 OH-传导率 耐碱性
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PPO/SEBS/SEBS-g-MAH共混物的阻燃性能研究
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作者 陶宇 陆红霞 +2 位作者 邵为 肖雨婷 高炜斌 《化工新型材料》 CAS CSCD 北大核心 2023年第7期145-148,共4页
以苯乙烯-乙烯/丁二烯-苯乙烯嵌段共聚物(SEBS)为弹性体改性剂,SEBS-g-MAH为相容剂,红磷和Mg(OH)_(2)作为阻燃剂,采用双螺杆挤出技术,制备了阻燃聚苯醚(PPO)/SEBS/SEBS-g-MAH共混物。结果表明:当红磷用量为15份时,Mg(OH)_(2)仅用80份,P... 以苯乙烯-乙烯/丁二烯-苯乙烯嵌段共聚物(SEBS)为弹性体改性剂,SEBS-g-MAH为相容剂,红磷和Mg(OH)_(2)作为阻燃剂,采用双螺杆挤出技术,制备了阻燃聚苯醚(PPO)/SEBS/SEBS-g-MAH共混物。结果表明:当红磷用量为15份时,Mg(OH)_(2)仅用80份,PPO/弹性体共混物的极限氧指数(LOI)就能达到28%,燃烧等级达UL94 V-0级,同时燃烧时的热释放速率(HRR)及生烟速率(SPR)均大幅降低。 展开更多
关键词 聚苯醚 苯乙烯-乙烯/丁二烯-苯乙烯嵌段共聚物 复配 阻燃性能
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Experiment and simulation on degradation and burnout mechanisms of SiC MOSFET under heavy ion irradiation 被引量:2
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作者 张鸿 郭红霞 +9 位作者 雷志锋 彭超 张战刚 陈资文 孙常皓 何玉娟 张凤祁 潘霄宇 钟向丽 欧阳晓平 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第2期525-534,共10页
Experiments and simulation studies on 283 MeV I ion induced single event effects of silicon carbide(SiC) metal–oxide–semiconductor field-effect transistors(MOSFETs) were carried out. When the cumulative irradiation ... Experiments and simulation studies on 283 MeV I ion induced single event effects of silicon carbide(SiC) metal–oxide–semiconductor field-effect transistors(MOSFETs) were carried out. When the cumulative irradiation fluence of the SiC MOSFET reached 5×10^(6)ion·cm^(-2), the drain–gate channel current increased under 200 V drain voltage, the drain–gate channel current and the drain–source channel current increased under 350 V drain voltage. The device occurred single event burnout under 800 V drain voltage, resulting in a complete loss of breakdown voltage. Combined with emission microscope, scanning electron microscope and focused ion beam analysis, the device with increased drain–gate channel current and drain–source channel current was found to have drain–gate channel current leakage point and local source metal melt, and the device with single event burnout was found to have local melting of its gate, source, epitaxial layer and substrate. Combining with Monte Carlo simulation and TCAD electrothermal simulation, it was found that the initial area of single event burnout might occur at the source–gate corner or the substrate–epitaxial interface, electric field and current density both affected the lattice temperature peak. The excessive lattice temperature during the irradiation process appeared at the local source contact, which led to the drain–source channel damage. And the excessive electric field appeared in the gate oxide layer, resulting in drain–gate channel damage. 展开更多
关键词 heavy ion silicon carbide metal–oxide–semiconductor field-effect transistors(SiC MOSFET) drain–gate channel drain–source channel single event burnout TCAD simulation
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Prevalence and Social Demographic Factors Associated with Secondary Traumatic Stress, Burnout and Compassion Satisfaction among Nurses at Selected Teaching Hospitals in Lusaka, Zambia
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作者 Michael Mumba Kanyanta Marjorie Kabinga Makukula Ruth Wahila 《Journal of Biosciences and Medicines》 CAS 2023年第2期86-104,共19页
Introduction: Nurses’ constant exposure to severe human suffering within constrained health care environments places them at risk for developing Secondary Traumatic Stress and Burnout. The current study therefore sou... Introduction: Nurses’ constant exposure to severe human suffering within constrained health care environments places them at risk for developing Secondary Traumatic Stress and Burnout. The current study therefore sought to establish the prevalence and social demographic factors associated with Secondary Traumatic Stress, Burnout and Compassion Satisfaction among Nurses working at selected Teaching Hospitals in Lusaka, Zambia. Methods: A correlational design employing a self-administered questionnaire adapted from version five of the Professional Quality of Life scale was used to collect data from 250 nurses drawn using proportional stratified sampling method. The resulting data were analyzed using version 23 of the Statistical Package for Social Sciences (SPSS). Hierarchical multiple linear regression analysis was used to identify predictors of Secondary Traumatic Stress and Burnout. Findings: Whilst the majority of respondents reported average levels of Secondary Traumatic Stress and Burnout, about a quarter reported high Secondary Traumatic Stress and Burnout scores at 23% and 26% respectively. Only 81 (32.4%) scored high on Compassion Satisfaction. Social demographic factors including;working in the main Intensive Care Unit, and being married accounted for the greatest variance in Secondary Traumatic Stress (R<sup>2</sup> = 0.237, p Conclusion: Findings of the current study signify a need to institute measures to help nurses cope with the deleterious psychological effects of constant engagement with those in distress and to foster Compassion Satisfaction. 展开更多
关键词 Secondary Traumatic Stress burnout Compassion Satisfaction Compassion Fatigue NURSE
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Occupational Burnout in Hospitals. A Population-Based Study among Health Professionals Working in Hellenic Red Cross Hospital
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作者 Konstantinos G. Seretis Maria-Theodora Papa +5 位作者 Anastasia Tsakalaki Constantine N. Antonopoulos Maria Kostorrizou Maria Ompasi Sofia Tzamtzidou Theofanis Papas 《Occupational Diseases and Environmental Medicine》 2023年第4期213-227,共15页
Occupational burnout, even though is a widespread subject of research, remains one of the factors that threaten the implementation and organizational structure of the provided health service. The aim of our study is t... Occupational burnout, even though is a widespread subject of research, remains one of the factors that threaten the implementation and organizational structure of the provided health service. The aim of our study is to investigate the level of burnout among health professionals in Hellenic Red Cross Hospital, one of the biggest Public Hospitals in Athens, Greece. The study population included 116 health workers and was conducted in 2022. The present study, cross-sectional in nature, investigates burnout symptoms in the health-related professionals by measuring the three dimensions of burnout;emotional exhaustion, depersonalization and personal achievements. The overall findings show that people who provide health care services in hospitals are a vulnerable group to burnout syndrome. More specifically, it was found that emotional exhaustion moves at medium to high levels, as did depersonalization, while personal achievements are at moderate to low levels. The findings of the present study indicate that emphasis should be given to increasing the personal achievements of employees, which will in turn reduce emotional exhaustion and depersonalization. Perhaps a more detailed study on this topic could enlighten us about the causes and treatment of burnout syndrome in health professionals. 展开更多
关键词 burnout Mental Health Occupational Stress Healthcare Professionals
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Stress,Burnout,and Resilience:Are Teachers at Risk?
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作者 JoséLuis Moreno-Lucas Juan Pedro Martínez-Ramón +2 位作者 Francisco Manuel Morales-Rodríguez Cecilia Ruiz-Esteban e Inmaculada Méndez 《International Journal of Mental Health Promotion》 2023年第2期207-222,共16页
It is increasingly common to find alarming news related to tragic events occurring in schools around the world.Being able to deal with these situations without getting hurt is a task not suitable for everyone.In gener... It is increasingly common to find alarming news related to tragic events occurring in schools around the world.Being able to deal with these situations without getting hurt is a task not suitable for everyone.In general,teachers are the ones who must deal with this type of situation in addition to other daily problems that appear in any classroom that make the level of stress to which they are subjected can become dangerous.This research aims to know the current situation of teachers in a region of southeastern Spain in terms of their level of work stress,resilience,and other associated variables,for which an ex post facto quantitative approach study was designed.For this purpose,an ad hoc sociodemographic questionnaire,and questions based on the Teaching and Learning International Survey of the Organization for Economic Co-Operation and Development,the Maslach Burnout Inventory,and the Brief Resilient Coping Scale were applied.The participating sample consisted of 470 teachers.The main findings were that 6%of teachers had burnout(high emotional exhaustion,high cynicism,and low professional effectiveness simultaneously).Resilience correlated inversely with stress,emotional exhaustion,cynicism,excessive teaching,and difficulty maintaining classroom discipline.In conclusion,knowing the needs of teachers allows us to reflect on what kind of prevention and intervention programs are necessary to improve the well-being of teachers and thus improve the quality of education. 展开更多
关键词 burnout COPING RESILIENCE STRESS TEACHER
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An analysis of association of personality traits with job burnout among nurses working in hospital
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作者 Hossein AKBARI Masoud MOTALEBI KASHANI +2 位作者 Sedighe DEHGHANI BIDGOLI Masoumeh Koochaki NASRABADI Fahimeh KARAMALI 《Journal of Integrative Nursing》 2023年第1期43-49,共7页
Objective:The objective of the present study is to explore the effects of personality traits on job burnout among hospital nurses.Materials and Methods:This cross-sectional research was done during 2019-2020 at Kashan... Objective:The objective of the present study is to explore the effects of personality traits on job burnout among hospital nurses.Materials and Methods:This cross-sectional research was done during 2019-2020 at Kashan Shahid Beheshti Hospital.The data analysis procedures included descriptive statistics and the partial least squares-based structural equation modeling.The participants were 150 nursing professionals.A questionnaire indicating information on demographics,burnout(measured using the Maslach Burnout Inventory with three dimensions of depersonalization,emotional exhaustion,and personal accomplishment),and personality profile(measured employing the neuroticism extraversion openness five-factor inventory including extroversion,conscientiousness,agreeableness,neuroticism,and openness to experience dimensions)was used to gather the required data.Results:The results of the study showed that the validity and reliability of the measurement model were desirable(factor load higher than 0.5,the Cronbach’s alpha value and the composite reliability are>0.7).Structural model showed statistically drastic,negative relationship between the nurses’burnout levels and neuroticism(β=0.722)and openness to experience(β=0.437).However,the relationship was significantly positive between the nurses’burnout levels and conscientiousness(β=0.672),agreement(β=0.594),and extraversion(β=0.559)(P<0.03).Conclusions:The present study helped the recognition of burnout among nurses working in hospitals and approved the effects of personality features on the burnout experience. 展开更多
关键词 Hospital nursing job burnout nurses personality traits professional burnout
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“There Are Many Cases That You Carry with You That Leave Scars”: Burnout and Secondary Trauma among Pediatric Residents in Routine and Covid Times
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作者 Or Kaplan Michal Kaplan +1 位作者 Rotem Shalev Michal S. Maimon 《Open Journal of Medical Psychology》 2023年第1期17-54,共38页
The current research joins previous studies in examining post-traumatic stress disorder (PTSD) and burnout among healthcare workers. The research focuses on the experiences of pediatric residents working in an emergen... The current research joins previous studies in examining post-traumatic stress disorder (PTSD) and burnout among healthcare workers. The research focuses on the experiences of pediatric residents working in an emergency department both in normal times and during the Covid pandemic. Research conducted prior to and during the Covid pandemic outbreak shows negative psychological effects among healthcare workers. Most of that research was conducted within the positivistic-quantitative paradigm. The current study is qualitative and focuses on pediatric residents who provide medical services to a unique population in a peripheral region of Israel, namely the Bedouin-Arab population. The research questions are the following: What characterizes pediatric residents’ work, in general and during the pandemic? Do they show signs of burnout and secondary trauma? How do they perceive their work with the Bedouin-Arab population, especially during the pandemic? The study, conducted within the phenomenological genre, included 14 pediatric residents in a large hospital in Israel’s periphery. Semi-structured clinical interviews were employed, in addition to questionnaires that examined PTSD and burnout to enhance the reliability of the findings. The results show that all residents reported stressful incidents in which patients’ physical integrity was threatened. The residents described the special nature of the medical cases they treated in routine times and during the pandemic outbreak, which stems mostly from the specific characteristics the population of Israel’s periphery. While at the early stages of the pandemic, the residents experienced reduced work pressure, they reported substantial difficulties later in the crisis, which intensified their sense of physical and emotional stress. Most residents reported feeling inadequately prepared for dealing with traumatic events. According to the results, most residents displayed secondary trauma (12 participants in interviews and 11 in questionnaires), which can be classified into categories based on the DSM-5. In the interviews, all 14 participants reported various signs of burnout. The questionnaires indicated burnout symptoms among 10 participants. Giving a voice to pediatric residents, the study highlights the complexity of their routine work as well as their role during the Covid crisis. Based on the findings, recommendations have been made for policymakers. The study highlights the importance of raising awareness to the implications of the residents’ rough work conditions in routine and emergency times and to the need to develop social support and intervention programs that might improve their well-being during their professional work. 展开更多
关键词 burnout Covid-19 Pediatric Residents Post-Traumatic Stress Disorder
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A Survey on Pharmacists’ Job Burnout and Satisfaction during the COVID-19 Era
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作者 Qirui Tai Mili Shi +2 位作者 Qiuyan Song Yijie Shi Huan Hu 《Pharmacology & Pharmacy》 2023年第8期239-251,共13页
Background: The COVID-19 outbreak negatively impacted pharmacists who provided basic medical services by inducing anxiety and depression, thus, leading to medical errors. Objective: This study aimed to investigate the... Background: The COVID-19 outbreak negatively impacted pharmacists who provided basic medical services by inducing anxiety and depression, thus, leading to medical errors. Objective: This study aimed to investigate the job burnout and satisfaction levels among hospital pharmacists during the period when China downgraded COVID-19 from a Category A disease to a Category B disease. Method: We selected pharmacists from several medical institutions in Yunnan Province as the subjects by using the general information questionnaire survey, the Maslach Burnout Inventory-Human Services Survey (MBI-HSS), and the Work Environment Scale-10 (WES-10). Results: After analyzing 461 questionnaires, the results showed that the age and marital status of the pharmacists displayed significant effects on their emotional exhaustion and sense of achievement, with younger pharmacists getting higher and lower scores for their tests on emotional exhaustion and sense of achievement, respectively (p Conclusion: Hence, it was concluded that the job burnout of pharmacists was at a low level during the period when China downgraded COVID-19 as a Category B disease from Category A. 展开更多
关键词 Job burnout COVID-19 PHARMACISTS Job Satisfaction Questionnaire Investigation
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SEBS弹性体装置的仪表选型设计
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作者 华霄峰 周路 《化工设计通讯》 CAS 2023年第9期61-63,共3页
SEBS热塑性弹性体是以苯乙烯、丁二烯为原料,环己烷为溶剂,经阴离子聚合反应制得。反应过程涉及重点监管的危险化工工艺,对仪表的稳定性及可靠性要求较高。针对原料的物料特性,以及生产过程的特点,分析了仪表设计中需注意的事项,提出了... SEBS热塑性弹性体是以苯乙烯、丁二烯为原料,环己烷为溶剂,经阴离子聚合反应制得。反应过程涉及重点监管的危险化工工艺,对仪表的稳定性及可靠性要求较高。针对原料的物料特性,以及生产过程的特点,分析了仪表设计中需注意的事项,提出了仪表选型及安装的建议。 展开更多
关键词 sebS弹性体 聚合反应 加氢反应 仪表选型
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Burnout syndrome and anxiety among healthcare workers during global pandemics:An umbrella review
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作者 Clayton Yang Teng Bey Jin-Uu Koh Christopher Wai Keung Lai 《World Journal of Meta-Analysis》 2023年第7期368-379,共12页
BACKGROUND Burnout syndrome and anxiety are two mental health symptoms experienced by healthcare workers(HCWs)that can be exacerbated during pandemics due to increased job demands and the global health workforce crisi... BACKGROUND Burnout syndrome and anxiety are two mental health symptoms experienced by healthcare workers(HCWs)that can be exacerbated during pandemics due to increased job demands and the global health workforce crisis.AIM To provide a comprehensive review and summary of evidence on burnout and anxiety in HCWs during previous global pandemics.METHODS A systematic search on electronic databases such as PubMed Central and MEDLINE was conducted to identify high-quality systematic review studies that reported on the prevalence of burnout and/or anxiety in HCWs during any previous global pandemic.RESULTS Twenty-four high quality systematic review articles were found to be suitable for inclusion.Twenty articles focused merely on Coronavirus disease 2019,while four articles examined multiple pandemics.Burnout was examined in nine articles,while anxiety was examined in the remaining 21 articles.Female HCWs and nurses were identified to be at a higher risk of developing burnout and anxiety during pandemic.We also observed a variation in the prevalence of burnouts and anxiety across different studies due to different mental health instruments were used in different studies.CONCLUSION Nurses and females HCWs had a high prevalence of burnout syndrome and anxiety during pandemic.More emphasis and attention should be paid to safeguarding the psychological well-being of these at-risk populations in the future pandemics. 展开更多
关键词 burnout ANXIETY Pandemics COVID-19
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The Influence of Self-esteem on College Students’Learning Burnout:A Mediation Model
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作者 MENG Xiangyin ZHANG Lei OU Guiyu 《Psychology Research》 2023年第7期312-318,共7页
We measured 324 college students’self-esteem,motivation for achievement,and learning burnout,and also we examined the inner mechanism of self-esteem’s influence on students’learning burnout.The results show:(1)Ther... We measured 324 college students’self-esteem,motivation for achievement,and learning burnout,and also we examined the inner mechanism of self-esteem’s influence on students’learning burnout.The results show:(1)There is a negative effect of self-esteem on college students’learning burnout;(2)Motivation of pursuing succeed plays partial mediating effect between self-esteem and learning burnout,but mediating effect of avoiding failure motivation between them is not significant.The study reveals that:the degree of learning burnout can be reduced by improving college students’level of self-esteem. 展开更多
关键词 college students SELF-ESTEEM learning burnout motivation for achievement
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