نتایج جستجو برای: nanoparticles concentration

تعداد نتایج: 479599  

ژورنال: سلامت و محیط زیست 2014
اسرافیلی, علی , فرزادکیا, مهدی , محوی, امیر حسین , کریمی تکانلو, لیلا, گلشن, معصومه,

Background and Objectives: Cadmium can enter water resources through the industrial wastewater. It could cause intensivly damages to the liver and kidney of humans. Magnetic iron nanoparticles are used to control and eliminate heavy metals from industrial effluents through the mechanisms of adsorption, ion exchange and electrostatic forces. The aim of this study was to evaluate the efficiency o...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2014
L Chekli S Phuntsho L D Tijing J L Zhou J-H Kim H K Shon

Manufactured nanoparticles (MNPs) are increasingly released into the environment and thus research on their fate and behaviour in complex environmental samples is urgently needed. The fate of MNPs in the aquatic environment will mainly depend on the physico-chemical characteristics of the medium. The presence and concentration of natural organic matter (NOM) will play a significant role on the ...

Iron oxide nanoparticles were synthesized by coprecipitation method using ammonia as precipitation agent. Most researchers usually add ammonia into the iron salt solution but in this work the salt solution drop wise has been added to the ammonia and the new obtained results were compared with those of other researches. Magnetic properties of nanoparticles were measured by VSM. The effect of rea...

Journal: :Journal of prosthodontic research 2013
Ahmad Sodagar Abbas Bahador Safia Khalil Atefe Saffar Shahroudi Mohammad Zaman Kassaee

PURPOSE TiO(2) and SiO(2) nanoparticles are products of nanotechnology which have been incorporated to acrylic resins (AR) in order to induce antimicrobial properties. However, as additives they can affect the mechanical properties of the final product. The aim of this study was to survey the effects of TiO(2) and SiO(2) nanoparticles on flexural strength (Fs) of poly (methyl methacrylate) acry...

Journal: :Artificial cells, nanomedicine, and biotechnology 2016
Kalimuthu Kalishwaralal Subhaschandrabose Jeyabharathi Krishnan Sundar Azhaguchamy Muthukumaran

Over the last 50 years, compelling evidence has accumulated on the beneficial role of selenium in human health. In the present study, different proteins were evaluated as reducing agents for the eco-friendly synthesis of selenium nanoparticles from an aqueous solution of sodium selenite. This method is a simple, low cost green synthesis alternative to chemical synthesis. The high conversion of ...

Journal: :international journal of nano dimension 0
h. nabipour department of chemistry, islamic azad university, takestan branch , takestan, iran.

nano dithiocarbamate (dtc) complex have been prepared by reaction between dithiocarbamate and metal salt under ultrasound irradiation. reaction conditions such as the ligand dtc and phennantroline concentration, aging time and the ultrasonic device power show important roles in the size, morphology and growth process of the final products. the dithiocarbamate complex nanoparticles have been pre...

Journal: :international journal of nano dimension 0
r. augustine department of bioengineering, v h n s n college, virudhunagar, tamilnadu, india. k. rajarathinam department of bioengineering, v h n s n college, virudhunagar, tamilnadu, india.

the silver nanoparticles are well-known for their antimicrobial, anti-inflammatory wound healing abilities. we synthesized silver nanoparticles using chemical reduction method and the formation of the silver nanoparticles was characterized by uv-vis absorption spectroscopy, ft-ir and sem techniques. the minimum inhibitory concentration of the synthesized nanoparticles was determined for both gr...

Journal: :journal of biomedical physics and engineering 0
m keshtkar d shahbazi-gahrouei m a mehrgardi m aghaei s m khoshfetrat

introduction: one class of magnetic nanoparticles is magnetic iron oxide nanoparticles (mions) which has been widely offered because of their many advantages. because of extensive application of mions in biomedicine, before they can be used in vivo, their cytotoxicity must be investigated. therefore, there is an urgent need for understanding the potential risks associated with mions. materials ...

Journal: :journal of chemical health risks 0
z. torabi biopolymer research group, food science and technology division, agriculture department, damghan branch, islamic azad university, damghan, semnan, iran a. mohammadinafchi biopolymer research group, food science and technology division, agriculture department, damghan branch, islamic azad university, damghan, semnan, iran

in this paper effect of sio 2 nanoparticles was investigated on potato starch films. potato starch films were prepared by casting method with addition of nano-silicon dioxide and a mixture of sorbitol/glycerol (weight ratio of 3 to 1) as plasticizers. sio 2 nanoparticles incorporated to the potato starch films at different concentrations 0, 1, 2, 3, and 5% of total solid, and the films were dri...

2015
Nahideh Gharehaghaji Mahmood Nazarpoor Hodaiseh Saharkhiz

BACKGROUND Ultrasmall superparamagnetic iron oxide nanoparticles have been used as a blood pool contrast agent for magnetic resonance angiography and perfusion studies. Linear relationship between signal intensity (SI) and nanoparticle concentration is essential for perfusion measurement. OBJECTIVES The aim of this study was to investigate the effect of different flip angles on maximum SI and...

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