نتایج جستجو برای: dynamic stress concentration

تعداد نتایج: 1186827  

Friction stir welding (FSW) is a new method that the joining is carried out by friction between two metals and heat creation. The stress concentration phenomena in welded joint cause the stress increasing in welded zone. In this research, modeling and analysis of similar junction of IN718 and Mar-M247 and non-similar junction of IN718-Mar-M247 superalloys were performed by ANSYS Software and fi...

Friction stir welding (FSW) is a new method that the joining is carried out by friction between two metals and heat creation. The stress concentration phenomena in welded joint cause the stress increasing in welded zone. In this research, modeling and analysis of similar junction of IN718 and Mar-M247 and non-similar junction of IN718-Mar-M247 superalloys were performed by ANSYS Software and fi...

Journal: :acta medica iranica 0
ramin mehrdad center for research on occupational diseases, tehran university of medical sciences, tehran, iran. sara aghdaei center for research on occupational diseases, tehran university of medical sciences, tehran, iran. gholamreza pouryaghoub center for research on occupational diseases, tehran university of medical sciences, tehran, iran.

exposure to air pollutants, steel dust or other occupational and environmental hazards as oxidative stress have adverse effects on subway workers' health. oxidative stress generates an excessive amount of reactive oxygen species (ros) and oxygen free radicals during their work time in the tunnels. once dna is repaired, urinary 8-hydroxy-deoxyguanosine (8-ohdg) is excreted in the urine. therefor...

2016
Declan Aherne Katie Farrant Louise Hickey Emma Hickey Lisa McGrath Deirdre McGrath

BACKGROUND Medical practitioners and students are at increased risk of a number of personal and psychological problems. Stress and anxiety due to work-load and study requirements are common and self-care methods are important in maintaining well-being. The current study examines perceptions of and satisfaction ratings with a mindfulness based stress reduction (MBSR) programme for 1(st) year (co...

Journal: :Journal of Mechanics 2021

Abstract The density of a radially inhomogeneous unbounded space is derived as function form. Harmonic dynamics stress the medium with circular cavity investigated by complex variable method. governing equation under incident SH waves in expressed Helmholtz coefficient. It equivalently transformed into standard conformal transformation Then, fields can be proposed. results indicate that changes...

2015
Johnny Leung Joseph Wu

This study examined the association of mindfulness (as a trait subject to individual difference) to stress and its role in moderating the daily hasslesstress relationship with Chinese university students. Respondents high in trait mindfulness reported lower levels of stress. A moderating effect of trait mindfulness on the daily hassles-stress relationship was found. Specifically, the direct ass...

Journal: :Plant physiology 2015
Marieke Dubois Lisa Van den Broeck Hannes Claeys Kaatje Van Vlierberghe Minami Matsui Dirk Inzé

Leaf growth is a tightly regulated and complex process, which responds in a dynamic manner to changing environmental conditions, but the mechanisms that reduce growth under adverse conditions are rather poorly understood. We previously identified a growth inhibitory pathway regulating leaf growth upon exposure to a low concentration of mannitol and characterized the ETHYLENE RESPONSE FACTOR (ER...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید