نتایج جستجو برای: nanosilver colloid
تعداد نتایج: 8300 فیلتر نتایج به سال:
Metal nanosolicoparticles are suspected to cause diseases in a number of organisms, including man. In this paper, we report the effects of nanosilver (Ag, 1-20 nm particles) on the early development of the zebrafish, a well-established vertebrate model. Embryos at the midgastrula stage were exposed to concentrations ranging from 100 to 0.001 mg/L to verify the effects on different endpoints: le...
b ackgro un d : the antimicrobial activity of silver nanoparticles has been investigated in medical fields in recent years, but there are few studies regarding its effect on oral microorganisms. the aim of the present study was to evaluate the in vitro antimicrobial and toxicity properties of nanosilver against two dental plaque microorganisms and human gingival fibroblast (hgf) cell line. me ...
objectives the aim of this study was to evaluate the stability of antibacterial properties of nanosilver solution during a period of 9 months against streptococcus mutans, staphylococcus aureus and pseudomonas aeruginosa. materials and methods in this in vitro study, the antibacterial effect of serial concentrations of nanosilver solution and amoxicillin antibiotic as control group on the stand...
in this study, microball nanosilver was produced with dimensions of about 1 micrometer in order to reduce the risks of absorption of nanosilver particles through skin and inhalation. different concentration levels of silver have been used in making of hand-sheets. the antibacterial properties of all hand-sheets were evaluated again escherichia coli and bacillus subtilis bacteria. results indica...
Background: The current type of nanoparticle that attracts a lot attention in the pharmaceutical field is Nanosilver because it can act as an antimicrobial. Objective: aim this study was to obtain gel preparation from katuk leaf extract, which effective antibacterial agent against acne. Methods: Katuk extract remains reducing synthesis using green method. characterization performed PSA, FTIR an...
Introduction Considering the growth of antibiotic resistance and the study of new ways in Nanobiotechnology, this study examines the therapeutic effect of silver nanoparticles on E.coli bacteria to control and find new treatments against ESBL isolates of Escherichia coli. Materials and Methods For 100 samples of Escherichia coli, antibiotic resistance was determined by disc method for 3rd gen...
Background: Biosynthesis of nanoparticles has attracted the attention of the scientific community in nanotechnology and biotechnology due to their extensive application in the area of material sciences and medicine. Nowadays, despite a various application of nanomaterial’s, there is a little information about their impact on human health. In this study, we investigated the comparative study on ...
This research has the purpose to determine characteristics of synthesis 20 ppm nanogold using TEM, effect adding on antioxidant activity Moringa leaves, and best concentration that supports increasing in leaves. Nanogold nanosilver were synthesized bottom-up methods. The concentrations used for leaf extract 5, 10, 15, 20, 25, 30 ppm. is Nanosilver at a had inhibition antibacterial activity. Tes...
In this study, we divided 300 goldfish (average weight: 12.30 ± 2.11 g) into 4 groups. Fish were fed diets that contained 4 levels of thyme extract: 0 (control), 200, 400 and 800 mg/kg (Thyame, LN23IN, France) for a period of 2 weeks. At the end of 2 weeks, each group of the mentioned treatments was divided into 2 groups: nanosilver-exposed group and control. In the aquarium of the nanosilver-e...
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