Search results for "STRESS"

Efecto del consumo de soja en la longevidad de ratones OF1 machos

2013

Encontrar buenos modelos de envejecimiento es un objetivo importante de la Gerontología. La diferencia de género en la longevidad, es decir, el hecho de que las hembras viven alrededor del 10% más que los machos en muchas especies, incluida la especie humana, ofrece una oportunidad única para estudiar los aspectos fundamentales del envejecimiento. En el contexto de la teoría mitocondrial de radicales libres en el envejecimiento, estudios realizados por nuestro grupo de investigación han encontrado que la producción de especies reactivas de oxígeno es aproximadamente el doble en los machos en comparación con las hembras (Borras et al., 2003). Así, dichas diferencias de longevidad entre macho…

On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimens

2019

In this paper, an experimental procedure to evaluate the elastic-plastic J-integral at the tip of a fatigue crack is presented. According to this new approach, the elastic component of the J-integral is derived from Thermoelastic Stress Analysis, while the plastic component of the J-integral is derived from the heat energy loss. An analytical link is proposed to apply this new experimental technique. Therefore, the elastic-plastic J-integral range was evaluated starting from infrared temperature maps measured in situ during crack propagation tests of AISI 304L stainless steel specimens. It was found that the range of the infrared thermography-based J-integral correlated well the crack growt…

Fatigue Design of Cruciform Joints including V-notch Effect at the Weld Toe

2014

Abstract The present paper proposes a new and more accurate fatigue life prediction model for fillet welded joints in steel subjected to constant amplitude loading. With the traditional fracture mechanics approach, the greatest difficulty when computing the fatigue life of a welded detail is to determine the initial crack size a0. The classical way to determine the stress intensity factor K (SIF) is by using the following formula Where σ is the applied stress, a is the crack size and g(a/T) the geometrical correction factor which has been determined by Gurney function or similar solutions. This approach is not accurate for short crack because of the singular V-notch behaviour close to the c…

The Role of Personal Biological Resource in the Job Demands-Control-Support Model: Evidence From Stress Reactivity.

2021

Job resources can buffer the deleterious effect of adverse work environments. Extant studies on the interaction pattern between job resources and adverse environments were confined to the diathesis stress model. This traditional perspective has received the challenge from the differential susceptibility model and the vantage sensitivity model. Additionally, stress reactivity may be one of the important job resources at the personal biological level, but its moderating role was short of empirical research. This study aimed to examine how stress reactivity interacts with work environments in predicting job burnouts among 341 Chinese hospital female nurses. This study selected job control and …

Exploring work- and organization-based resources as moderators between work–family conflict, well-being, and job attitudes

2006

Abstract In modern Western life it is difficult to avoid work–family conflict. Therefore the resources that might reduce its negative outcomes on well-being and job attitudes come into focus. Our study contributes to the work–family conflict literature by exploring the indirect (moderator) and direct role of three work- and organization-related resources, i.e., job control, family supportive climate, organization-based self-esteem (OBSE), in the work-to-family conflict and well-being/job attitude relationship. Theoretically, the study tested the recently developed Job Demands–Resources (JD-R) model in the Scandinavian context. Data for the study were gathered from three differing Finnish or…

Job insecurity, worries about the future, and somatic complaints in two economic and cultural contexts: A study in Spain and Austria.

2015

How might the Socio-moral Climate Buffer Job Insecurity Stressor A Multilevel Study in Spain and Austria

2020

A major current work stressor is job insecurity, which presents a well-established negative impact on wellbeing. In this vein, the aims of this study were: 1) to provide additional evidence on this relationship; 2) to examine the socio-moral climate as a potential situational buffer to ameliorate its detrimental effect. A multilevel approach was adopted to examine the socio-moral climate at higher levels (i.e., organisational level). The sample was composed of 1,435 employees from Spain and Austria. Random coefficient model results corroborated the negative relationship between job insecurity and employee affective wellbeing, the positive relationship between job insecurity and emotional ex…

Different Conceptions of Burnout and Its Relationships with Job Strain and Emotional Intelligence

2021

Burnout is an emotional syndrome that involves a prolonged response to stress. Its study in the work environment is of interest, since it manifests itself through negative attitudes toward work and affects the emotional, attitudinal, and physical level of the person who suffers it. The most relevant instruments for measuring burnout are the Maslach Burnout Inventory (MBI), most commonly used, and the Shirom-Melamed Burnout Measure (SMBM). Likewise, taking into account the emotional nature of the Burnout, it is related to Emotional Intelligence (EI), playing a very important role in the adaptive capacity of individuals in stressful situations. The aim of the present study is (1) to analyze t…

Evaluating the Burden of Job Stress From the Public-Health and Economic Viewpoints

2013

National audience;

The impact of workload and job satisfaction on occupational stress -A comparison among newly qualified and experienced midwives in Poland.

2022

BACKGROUND: Midwives are potentially exposed to high levels of occupational stress. The level of stress may be related to the job demands and job resources, as well as midwife seniority. To date, few studies on the determinants of occupational stress have examined Polish midwives. OBJECTIVE: This study aims to investigate the roles of workload, job satisfaction, and seniority in shaping the stress levels of midwives in Poland. METHODS: A cross-sectional approach and structural equation modeling (SEM) were used to compare two groups: newly qualified midwives (NQMs; n = 79) and experienced midwives (n = 99). All data were collected between January and November 2018. RESULTS: Analysis revealed…