نتایج جستجو برای: silver accumulation
تعداد نتایج: 194697 فیلتر نتایج به سال:
The present industrial sector related to textile industry, medicine product industry, house hold industry have enormously spread the use of Silver nanoparticle. Varieties of teratogenic effects are executed due to silver nanoparticle among which one of the important is skeletal dysmorphology. The discovery of the new facts can be compared with the quotes from some studies [1] reveals that there...
Effect of Coating Agents Silver Nanoparticles on Their Accumulation in and Growth Radish (Raphanus sativus )
To assess the effect of silver nanoparticles on mice cognitive abilities, daily, up to 4-month period, experimental were administrated with solution. Accumulation in brain was assessed by neutron activation analysis. Cognitive abilities before and after administration evaluated Morris water maze behavioral test. No significant differences amounts accumulated found between capable incapable anim...
Silver is taken up as a Na(+) analog (Ag(+)) by freshwater organisms, but little is known about its bioavailability in relation to salinity. Adult Opsanus beta were acclimated to 2.5, 5, 10, 20, 40, 60, 80, and 100% seawater (Cl(-)=545 mM) and exposed for 24 h to 2.18 microg L(-1) silver as (110m)Ag-labelled AgNO(3), a concentration close to the U.S. EPA marine criterion and less than 0.1% of t...
Early life stages of rainbow trout were exposed to 0, 0.1 and 1 microg/L Ag (as AgNO(3)) in very soft water (2mg/L CaCO(3)), moderately hard water (150 mg/L CaCO(3)) and hard water (400mg/L CaCO(3)) of low dissolved organic carbon concentration (0.5mg C/L) from fertilization to swim-up (64 days) under flow-through conditions, and monitored for whole embryo/larval silver accumulation, Na(+) and ...
At the present study, the distribution of Cd, Hg and Pb in water and their accumulation in fish species (silver carp, rainbow trout and shrimp) in three different farms. Totally 63 samples of three species and the water of their ponds were obtained during summer 2008 from Gilan, Mazandaran and ChabaharIran. The concentrations of three heavy metals in fish and shrimp flesh were measured by flame...
Background and aims: Today, nanosilver have a wide range of applications in personal care products, food processing and medical fields because of its antimicrobial properties. Recent studies have revealed that nanoparticles are able to transfer from mothers to their offspring via the placenta and maternal milk and accumulate into various organs, including brain. Since oxidative stress is a key ...
Rainbow trout eggs were acutely challenged with silver (as AgNO(3)) at different stages of development from fertilization through to hatch in moderately hard water (120 mg CaCO(3) l(-1), 0.70 mM (25 mg l(-1)) Cl(-), 1.3 mg l(-1) DOC, 12.3+/-0.1 degrees C) at measured total silver concentrations of 0.11+/-0.004, 1.55+/-0.15, and 14.15+/-1.52 microg l(-1). Four separate acute challenges were cond...
Anaerobic cultures of Shewanella oneidensis MR-1 reduced toxic Ag(I), forming nanoparticles of elemental Ag(0), as confirmed by X-ray diffraction analyses. The addition of 1 to 50 microM Ag(I) had a limited impact on growth, while 100 microM Ag(I) reduced both the doubling time and cell yields. At this higher Ag(I) concentration transmission electron microscopy showed the accumulation of elemen...
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