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Wyszukujesz frazę "Jabbari, H." wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Musculoskeletal Symptoms in Workers
Autorzy:
Ghasemkhani, M.
Mahmudi, E.
Jabbari, H.
Powiązania:
https://bibliotekanauki.pl/articles/90334.pdf
Data publikacji:
2008
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
musculoskeletal disorders
prevalence
packing
repetitive movements
awkward postures
Opis:
Self-report measures of musculoskeletal discomfort are a widely used and generally accepted risk factor for musculoskeletal disorders in epidemiologic research. The aim of this study was to investigate the prevalence of musculoskeletal symptoms in packing workers. A cross-sectional study of 75 workers was carried out using a modified Nordic questionnaire. Prevalence was determined with the percentage of positive responses to questions on musculoskeletal symptoms. Odds ratios and 95% confidence intervals were the measures of association between prevalent musculoskeletal symptoms and demographic factors; they were determined with logistic regression. Most musculoskeletal symptoms in workers were from the low back (44.0%), shoulders (33.3%) and neck (32.0%). Years worked were strongly significantly associated with musculoskeletal symptoms and pain in the neck, shoulders and wrists/hands, P < .001–.050. Hazards related to repetitive movements and discomfort postures could be reduced with stretching exercises, rotation schedules and through new engineering solutions.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2008, 14, 4; 455--462
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Blank shape optimization on deep drawing of a twin elliptical cup using the reduced basis technique method
Autorzy:
Golshani, M H
Jabbari, A.
Powiązania:
https://bibliotekanauki.pl/articles/957954.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
deep drawing
twin elliptical cup
reduce basic technique
anisotropic
sheet
earring
Opis:
In this project thesis, initial blank shape optimization of a twin elliptical cup to reduce earring phenomenon in anisotropic sheet deep drawing process was studied .The purpose of this study is optimization of initial blank for reduction of the ears height value. The optimization process carried out using finite element method approach, which is coupled with Taguchi design of experiments and reduced basis technique methods. The deep drawing process was simulated in FEM software ABAQUS 6.12. The results of optimization show earring height and, in addition, a number of design variables and time of process can be reduced by using this methods. After optimization process with the proposed method, the maximum reduction of the earring height would be from 21.08 mm to 0.07 mm and also it could be reduced to 0 in some of the directions. The proposed optimization design in this article allows the designers to select the practical basis shapes. This leads to obtain better results at the end of the optimization process, to reduce design variables, and also to prevent repeating the optimization steps for indirect shapes.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 27; 72-77
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of corm dipping in salicylic acid or potassium nitrate on growth, flowering, and quality of saffron
Autorzy:
Khayyat, M.
Jabbari, M.
Fallahi, H.-R.
Samadzadeh, A.
Powiązania:
https://bibliotekanauki.pl/articles/2184.pdf
Data publikacji:
2018
Wydawca:
Instytut Ogrodnictwa
Tematy:
saffron
Crocus sativa
corm
salicylic acid
potassium nitrate
growth
flowering
quality
colour characteristics
chlorophyll fluorescence
Źródło:
Journal of Horticultural Research; 2018, 26, 1
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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