نتایج جستجو برای: 1 and 2 wt nps fe

تعداد نتایج: 17518846  

Gelare Hajsalimi Mojtaba Falahati,

Application of nanotechnology in medicinal and biological fields has attracted a great interest in the recent yeras. In this paper the cell membrane leakage induced by iron nanoparticles (Fe-NP) against PC12 cell line which is known as a model of nervous system cell line was investigated by the lactate dehydrogenase (LDH) test. Therefore, PC12 cells were incubated with different concentration o...

Journal: :The journal of physical chemistry. B 2005
Placidus B Amama Sangyun Lim Dragos Ciuparu Yanhui Yang Lisa Pfefferle Gary L Haller

Fe-substituted MCM-41 molecular sieves with ca. 1, 2, and 3 wt % Fe were synthesized hydrothermally using different sources of colloidal silica (HiSil and Cab-O-Sil) and characterized by ICP, XRD, N2 physisorption, UV-vis, EPR, TPR, and X-ray absorption. Catalysts synthesized from Cab-O-Sil showed higher structural order and stability than those from HiSil. The local environment of Fe in the me...

Journal: :The Science of the total environment 2015
Tea Romih Barbara Drašler Anita Jemec Damjana Drobne Sara Novak Miha Golobič Darko Makovec Robert Susič Ksenija Kogej

The aim of this study was to determine whether citric acid adsorbed onto cobalt ferrite (CoFe2O4) nanoparticles (NPs) influences the bioavailability of their constituents Co and Fe. Dissolution of Co and Fe was assessed by two measures: (i) in aqueous suspension using chemical analysis, prior to application onto the food of test organisms; and (ii) in vivo, measuring the bioavailability in the ...

Journal: :The Analyst 2010
Qianli Zhang Fei Yang Fei Tang Kai Zeng Kangkang Wu Qingyun Cai Shouzhuo Yao

In this paper, ionic liquid (IL)-coated magnetic Fe(3)O(4) nanoparticles (NPs) as an adsorbent of mixed hemimicelles solid-phase extraction (SPE) was investigated for the preconcentration of polycyclic aromatic hydrocarbons (PAHs) from environmental samples. Due to the high surface area and excellent adsorption capacity of the Fe(3)O(4) NPs after modification with ILs, satisfactory extraction r...

ژورنال: مواد پرانرژی 2018

Nanoparticles (NPs) tend to agglomerate consequently their catalytic activities decrease during propellant operation. Therefore, loading the nanoparticles onto the support is a general method to prevent the agglomeration and maintain the catalytic activities of the nanoparticles. Three dimensional (3D) graphene has high surface area and porous structur. Furthermore,, 3D-graphene is an efficient...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

magnetic nanoparticles are the good choice for using in mri as the contrast agent. iron oxide particles such as magnetite (fe3o4) or its oxidized form maghemite (γ-fe2o3) are the most commonly employed in biomedical applications. in this study, we synthesized and optimized the preparation of chitosan manganese-ferrite nanoparticles (cmn-fe nps) and evaluated its ability for the mice macrophage ...

A simple and facile method for the preparation ofFe2+ supported on hydroxyapatite-core-shell-γ-Fe2O3 nanoparticles (γ-Fe2O3@HAp-Fe2+ NPs) as an environmentally friendly and recyclable green catalyst is described and used for the one-pot synthesis of benzimidazoles and benzoxazole derivatives via reactions between aromatic aldehyd...

In this research, spherical α-Fe2O3 nanoparticles (NPs) were supported on the surface of 12-tungstosilicic acid (12-TSA.7H2O) as a catalyst support, using two different Forced Hydrolysis and Reflux Condensation (FHRC) and Solid-State Dispersion (SSD) methods. α-Fe2O3 and 12-TSA.7H2O were synthesized due to previous reports. A...

Journal: :Pharmacological reports : PR 2006
Apolonia Rybczyńska Konrad Boblewski Artur Lehmann Czesława Orlewska Henryk Foks

Calcimimetics administered orally cause "pharmacological parathyroidectomy" confirmed by a decrease in parathyroid hormone secretion (PTH) and in plasma Ca(2+) concentration. Parathyroids are also the source of parathyroid hypertensive factor (PHF). The aim of this study was to determine the dose-dependent effect of an intravenously (iv) applied calcimimetic, NPS R-568, on plasma Ca(2+) concent...

In this study, ternary mixed metal oxide (Ce2O3/La2O3/Fe3O4) catalysts were synthesized for reduction of SO2 to sulfur by CH4. The response surface method (RSM) was used to optimize the synthesis conditions. The XRD, FESEM, BET, BJH, EDX and NH3-TPD analyses were performed to characterize the synt...

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