in the present work, a simple and sensitive method was developed for determination of morphine and heroin using gold nanoparticles as resonance rayleigh scattering (rrs) and colorimetric technique’s probe. synthesized gold nanoparticles by sodium citrate reduction method have a negative charge layer on their surfaces because of self-assembled citrate anions on their surface. binding of morphin...

Background: Efficient strategies are required to identify and manage the occupational stresses and improve optimal experiences among health care employees, especially nurses. Thus, the present study was conducted to determine the impact of affective capital enhancement training on optimal experiences and job stress among nurses. Methods: This is a semi-experimental study consists of two groups ...

  Abstract   Background & Aim: Professional ethic has a significant effect on individual and group performance and organizational results. The aim of this study was to investigate the relationship between organizational commitment and professional ethics.   Materials & Methods: It was a descriptive-correlational study. The sample consisted of 226 persons including nurses a...

Abstract Background: Organizational commitment is an important occupational attitude which demonstrates personnel staffs liability for their organization. This study aimed at assessing the level of nurses’ organizational commitment in selected hospitals of Tehran University of Medical Sciences in 2011. Materials and Methods: In this cross - sectional study, 363 nurses with BS and MS degre...