نتایج جستجو برای: silver nanoparticles
تعداد نتایج: 141266 فیلتر نتایج به سال:
The present study demonstrates an economical and environmental affable approach for the synthesis of "protein-capped" silver nanoparticles in aqueous solvent system. A variety of standard techniques viz. UV-visible spectroscopy, transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) measurements were employed to characterize the shape, size and ...
Objective: To develop a reliable, ecofriendly procedure for bioreduction of silver nanoparticles by Aspergillus flavus. Methods: Characterization was done by using UV-VIS spectrophotometry, Infrared spectroscopy (FT-IR) and X-ray diffraction. Results: IR spectroscopy showed the potential biomolecule responsible for the reduction of silver nanoparticles and stability of the bioreduced silver nan...
objective(s):electromagnetic radiations which have lethal effects on the living cells are currently also considered as a disinfective physical agent. materials and methods: in this investigation, silver nanoparticles were applied to enhance the lethal action of low powers (100 and 180 w) of 2450 mhz electromagnetic radiation especially against escherichia coli atcc 8739. silver nanoparticles ...
conclusions the synergistic effect was found on the healing of infected wounds caused by s. aureus by using an mbp-1 and silver nanoparticles combination in a mouse model. results the mic and mbc of mbp-1 were found to be 0.6 and 0.7 mg/ml, respectively. mic and mbc of silver nanoparticles were determined to be 6.25 and 12.5 mg/l, respectively. mic and mbc of the silver nanoparticles and mbp-1 ...
PVP-capped silver nanoparticles with a diameter of the metallic core of 70 nm, a hydrodynamic diameter of 120 nm and a zeta potential of -20 mV were prepared and investigated with regard to their biological activity. This review summarizes the physicochemical properties (dissolution, protein adsorption, dispersability) of these nanoparticles and the cellular consequences of the exposure of a br...
Phytostabilized silver nanoparticles are being widely studied for its various pharmacological properties. In the present study silver nanoparticles synthesized using Black pepper extract was evaluated for its acute toxicity and also for its anti inflammatory activity in carrageenan induced paw edema in rats. The anti inflammatory effect was also compared against the commercial silver nanopartic...
Recent theoretical progress in understanding the effect of silver nanoparticles on photo-induced orientation of liquid crystalline polymer was reviewed. The observed enhancement of photo-induced rate results from the surface plasmon resonance (SPR) of silver nanoparticles. And the observed reducing phenomena are attributed to the interaction between materials and silver nanoparticles. And then ...
Antibiotic resistant pathogens pose an enormous threat to the treatment of various serious infections. To overcome this condition, a periodic replacement of the new and existing antibiotic is necessary. Antibiotics in combination with biosynthesized silver nanoparticles minimize the antibiotic doses to cure the dreaded diseases. In this study, Silver nanoparticles were bio-synthesized by extrac...
Materials used in ossicular replacement prostheses must possess appropriate biological properties, such as biocompatibility, stability, no cytotoxicity. Due to the risk of infection (otitis media and chronic otitis media), it is desirable to use an antibacterial agent for illness prevention during the ossicular reconstruction. The goal of this work was to observe biological properties of a new ...
Silver nanoparticles are widely used in various sciences and industries. Widespread use of silver nanoparticles has caused entrance of it to the aquatic environment through Wastewater, so it is necessary to investigate the effects of silver nanoparticles on various aquatic organisms. The present study investigated the lethal concentration and bioaccumulation of silver nanoparticles and its comp...
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