Search results for " STRESS"

Modelling eco-physiological response of table olive trees (Olea europaea L.) to soil water deficit conditions

2013

Abstract The knowledge of crop response to water stress is crucial to predict transpiration reductions under limited soil water conditions and for a rational scheduling of irrigation. In order to assess whatever water stress model, it is necessary to estimate critical thresholds of soil water status, below which plant transpiration starts to decrease. The main objective of the work is to identify the shape and to determine the parameters of table olive orchards (Olea europaea, var. Nocellara del Belice) water stress function, assessed according to relative transpiration or leaf/stem water potential. In order to assess different water stress functions describing the eco-physiological field r…

Effects of Saline and Deficit Irrigation on Soil-Plant Water Status and Potato Crop Yield under the Semiarid Climate of Tunisia

2019

Water supplies have been decreasing in several semi-arid regions, and it is therefore necessary to adopt irrigation strategies aimed at maximizing water use efficiency. In this paper, the effects of saline and deficit irrigation on water use efficiency and on potato crop response, based on observations of soil and plant water status, were investigated. Experiments were carried out in Central Tunisia, by monitoring potato crop growth during two seasons in four distinct treatments (T1&ndash

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…

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

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…

Nanotechnology for Natural Medicine: Formulation of Neem Oil Loaded Phospholipid Vesicles Modified with Argan Oil as a Strategy to Protect the Skin f…

2021

Neem oil, a plant-derived product rich in bioactives, has been incorporated in liposomes and hyalurosomes modified by adding argan oil and so called argan-liposomes and argan-hyaluro-somes. Argan oil has also been added to the vesicles because of its regenerative and protective effects on skin. In the light of this, vesicles were specifically tailored to protect the skin from oxidative stress and treat lesions. Argan-liposomes were the smallest vesicles (~113 nm); the addition of sodium hyaluronate led to an increase in vesicle size (~143 nm) but it significantly improved vesicle stability during storage. In vitro studies confirmed the free radical scavenging activity of formula-tions, irre…