background: nurses are exposed to various stressful situations in their work environment. it is obvious that occupational stress affects physical and psychological health of nurses and consequently the quality of their work. the purpose of the present study was to determine nursing occupational stress and factors influencing that in order to implement interventional programs for decreasing them...

Hugo Larocque,1 Frédéric Bouchard,1 Vincenzo Grillo,2 Alicia Sit,1 Stefano Frabboni,2, 3 Rafal E. Dunin-Borkowski,4 Miles J. Padgett,5 Robert W. Boyd,1, 6 and Ebrahim Karimi1, 7, ∗ 1The Max Planck Centre for Extreme and Quantum Photonics, Department of Physics, University of Ottawa, 25 Templeton St., Ottawa, Ontario, K1N 6N5 Canada 2CNR-Istituto Nanoscienze, Centro S3, Via G Campi 213/a, I-4112...

background; fluoride is an essential nutrient for the human body. the major routes of fluoride intake include food and drinking water, though the absorption of fluoride from food is much easier. the aim of this study was to evaluate the amount of fluoride in the soil and tomato and onion crops on farms of zanjan. methods; three farms of each crop (tomato and onion) were selected randomly. each ...

background: bio aerosols include airborne micro-organisms such as bacteria, fungi, viruses, etc and their products. exposure to a bio aerosol is linked with a broad spectrum of health problems, including infectious diseases, acute toxic effects, allergies, and cancer. the aim of this study was to evaluate the quality and quantity of bio aerosols found in the air of different wards in valiasr ho...

background: today some bakeries for artificially production of bread in order to production process expedition and compensating defects that created by unnatural fermentation and as well as undesirable quality of flour. for cover superficial defects of bread use of harmful chemical material such as soda, that can cause health problems. the aim of this study is determination of soda and salt amo...

the main purpose followed in this study was to identify and analyze the ways of coping up with drought in rural regions of zanjan province. the research method of the study was an analytical- explanatory one. the statistical population of the study consisted of experts of jihad- e- agriculture organization of zanjan province (n= 316). according to krejcie and morgan table, 175 individuals were ...

virtual water trade is investigated in industrial, agricultural, social sectors for national and global scales. in this study, interbrain virtual water was evaluated in irrigation sector for the sefidroud basin to use in the allocation of water resources. in this regard, through investigating eight cropping pattern (s1- s8) in the riverbank of qezelozan river (provinces of east azarbaijan, zanj...

The aim of this case-control study was to determine the frequency of pica and its relationship with iron deficiency in children in Zanjan. We selected 872 children and determined the frequency of pica. We selected students who did not have pica of the same age and sex, and in the same class as our cases as a control group. Both groups were evaluated for iron deficiency anaemia. Among the 57 stu...