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...

Introduction: Low back pain is one of the most common disorders in modern society. Disturbed properioception can be a possible cause of low back pain and can cause recurrence of low back pain. Previous studies have shown that low back pain reduces proprioception due to instability in the low back. Since the degenerative process of disc herniation is one of the important factors in exacerbating ...

a novel silver (ag) nanocomposite electrode was proposed that fabricated from metal nanostructures and ionic liquids. the combined application of unique properties of nanomaterials and ionic liquids in the design of this ag nanocomposite results in electrodes with interesting advantages compared to the conventional metal disk electrode. in the first part of this thesis, the elecrocatalytic eff...

Background and Aim: Improper body posture and differences in spinal angles can lead to orthopedic injuries. Forward head and kyphosis are some of the complications of improper posture that can lead to back pain. The aim of the present study was to investigate the relationship between forward head position and dorsal kyphosis with non-specific chronic low back pain in military mans. Methods: In ...