Silver salts and nanosilver (NS) are the common antimicrobial used in the treatment of chronic wounds, so they are important to assess their dermal toxicity. Therefore, in this study, the possible dermal toxicity of NS particles and silver nitrate (AgNO3), was tested by determining the serum level of transforming growth factor-β1(TGF-β1) and study on of mouse skin tissue. In this stu...

Background : Fractures are the most undesirable thing in endodontically treated teeth. The main reason teeth has a considerable risk for fractures is loss of tooth structure. Objective This study aims to determine effect access cavity preparation and instrument taper percentage on upper premolar fractures. Material Methods Twenty-four samples were stored sterile saline solution. sample was divi...

Powdered infant formula (PIF) can become contaminated during production with harmful bacteria such as Cronobacter spp. (formerly Enterobacter sakazakii). Inadequate conditions of preparation and handling of PIF can therefore exacerbate the risk of severe infection, especially in preterm infants. The WHO emphasized three main interventions for preparation and handling of PIF: (1) to dilute the p...

Neutrinos, being the only fermions in Standard Model of Particle Physics that do not possess electromagnetic or color charges, have unique opportunity to communicate with outside through mass mixing. Such Model-singlet are generally referred as “sterile neutrinos”. In this review article, we discuss theoretical and experimental motivation for sterile neutrinos, well their phenomenological conse...

Helix-hairpin-helix (HhH) is a widespread motif involved in non-sequence-specific DNA binding. The majority of HhH motifs function as DNA-binding modules, however, some of them are used to mediate protein-protein interactions or have acquired enzymatic activity by incorporating catalytic residues (DNA glycosylases). From sequence and structural analysis of HhH-containing proteins we conclude th...

We developed a simple small-scale experiment to measure the beta decay spectrum of $^{3}$H. The aim this research is investigate presence sterile neutrinos in keV region. Tritium nuclei were embedded 1$\times$1$\times$1 cm$^3$ LiF crystal from $^6$Li(n,$\alpha$)$^3$H reaction. energy electrons absorbed was measured with magnetic microcalorimeter at 40 mK. report new method sample preparation, e...