in this work firstly fe3o4 nanoparticles were synthesized via a sono-chemical method. at the second step magnesium hydroxide shell was synthesized on the magnetite-core under ultrasonic waves. for preparation fe3o4-mgo the product was calcinated at 400 ºc for 2h. properties of the product were examined by x-ray diffraction pattern (xrd), scanning electron microscope (sem) and fourier transform ...

Understanding the process of the self-assembly of gigantic polyoxometalates and their subsequent molecular growth, by the addition of capping moieties onto the oxo-frameworks, is critical for the development of the designed assembly of complex high-nuclearity cluster species, yet such processes remain far from being understood. Herein we describe the molecular growth from {Mo150 } and {Mo120 Ce...

Methods: The prevalence of multiple sclerosis (MS) is high in patients suffering from 25-hydroxyvitamin D3 [25(OH)D] deficiency. The aim of this study was to investigate the possible association of saliva and serum 25(OH)D concentrations with MS in women.Methods: Serum and saliva 25(OH)D levels of 30 MS women and 30 matched healthy controls in this case-control study were measured by ELIS...

the hydrolysis of cadmium nitrate was studied spectrophotometrically at different ionic strengthsof sodium perchlorate in a wide ph range, 1-12, and at 25 c. least squares calculations areconsistent with the formation of m(oh)+, m(oh)2, m(oh)3- and m(oh)42- species, which m iscd2+. the dependency on ionic strength in the background electrolyte solutions was taken intoaccount by using a debye-hu...

vitamin d (vit d) deficiency is determined by serum 25-oh-d. several studies revealed high prevalence of vit d deficiency in females of the asian sunny countries. 162 females referred to urmia orthopedic clinics, with bone and muscle pain with the ages 15 up to 40 yrs participated in the study. the individuals were not pregnant, lactating, with no systemic or neurological diseases during the co...

background: given the relationship of vitamin d deficiency with insulin resistance syndrome as the component of polycystic ovary syndrome (pcos), the main aim of this study was to compare serum level of 25- hydroxyvitamin d [25(oh)d] between pcos patients and normal individuals. materials and methods: a cross sectional study was conducted to compare 25(oh)d level between117 normal and 125 untre...