The stable yellow nanosilver (AgNP) and blue nanosilver (AgNPB) sols were prepared by the NaBH4 procedure. The new nanocatalytic reaction of AgNP-NaCl-H2O2 was investigated by surface plasmon resonance (SPR) absorption, resonance Rayleigh scattering (RRS), surface-enhanced Raman scattering (SERS) and scanning electron microscope (SEM) techniques. The autocatalytic oxidization of Ag on AgNP surf...

residual microorganisms in the root canal system (rcs) after endodontic therapy such as candida albicans are a major cause of endodontic failure. calcium hydroxide (ch) and chlorhexidine (chx) have suitable antimicrobial activity against bacteria and can be used as intracanal medicaments. nanosilver has also shown antimicrobial activity against microorganisms. this study aimed to compare the an...

nanotechnology is a new and specific method for therapy of diseases. nanosilver particle is one of the functional fields of nanotechnology. it has been shown that these nanoparticles have antibacterial and antifungal properties. different studied have been shown that nanoparticles may have important role in medicine. for example, it has been shown to have inhibitory effects on the treatment of ...

effect of nanosilver (ns) on the heat-transferring rate to the core section of medium density fiberboard (mdf) mat was studied here. a 400 ppm aqueous nanosilver suspension was used at three consumption levels of 100, 150, and 200 ml/kg, based on the weight of dry wood fibers; the results were then compared with the control mdf panels. the size range of nanosilver was 30-80 nm. results showed t...

Effect of nanosilver (NS) on the heat-transferring rate to the core section of medium density fiberboard (MDF) mat was studied here. A 400 ppm aqueous nanosilver suspension was used at three consumption levels of 100, 150, and 200 mL/kg, based on the weight of dry wood fibers; the results were then compared with the control MDF panels. The size range of nanosilver was 30-80 nm. Results showed t...

Effect of nanosilver (NS) on the heat-transferring rate to the core section of medium density fiberboard (MDF) mat was studied here. A 400 ppm aqueous nanosilver suspension was used at three consumption levels of 100, 150, and 200 mL/kg, based on the weight of dry wood fibers; the results were then compared with the control MDF panels. The size range of nanosilver was 30-80 nm. Results showed t...

widespread use of nanosilver can be led the contamination of aquatic environment and impact on living organisms such as fishes. we investigated histopathological changes in the gills tissue of caspian roach fingerlings after two weeks exposure to sublethal concentrations of nanosilver. following one and two weeks exposure, necrosis, shortening of secondary lamellae, edema, destruction of epithe...

 Effect of nanosilver particles was studied on the hatchability of rainbow trout (Oncorhynchus mykiss) egg and survival of the produced larvae at about 12ºC. In the first experiment the water-based nanosilver particles was used at concentrations of 0.5, 1, 2 and 4 mgL-1 for 30 minutes per day starting 24 hour post egg incubation until the hatching time. The mean percentage of hatchability reach...

Recently nanoparticles, particularly silver nanoparticles, are broadly used in industry, hence the contamination of the environment with AgNPs has caused considerable concern. In this study, the toxicity of biosynthetic nanosilver produced by two macroalgae: Sargassum boveanum and Ulva flexuosa extracts were compared with chemical nanosilver in Daphnia magna. Size and quality of nanoparticles e...

Aim: There are Conflicting reports on safety profile of nanoparticles biological cells. This study evaluated the impact nanosilver hemocompatibility salt-loaded rats. Materials and Methods: Sprague-Dawley rats [(inbred) (120-140 g)] randomly divided into 4 groups, (n = 6) were studied. Group 1(control) received normal rat chow tap water, 2 containing 8% NaCl [(salt-loaded (SLRs)]. 3 + Nanosilve...