نتایج جستجو برای: superparamagnetic fe3o4 nanoparticles

تعداد نتایج: 111628  

2017
Arash Hasanzadeh Rovshan Khalilov Elham Abasi Siamak Saghfi Aygun Nasibova Abolfazl Akbarzadeh

Iron oxide nanoparticles are smart materials that have been commonly used in medicine for diagnostic imaging, drug delivery, and therapeutic applications. In this study, Iron oxide nanoparticles and doxorubicin hydrochloride, were absorbed into poly (D, L-lactic-co-glycolic acid) poly (ethylene glycol) (PLGA-PEG) nanoparticles for narrow behavior. PLGA:PEG triblock copolymers were synthesized b...

2013
Yimeng Du Pui To Lai Cheung Hoi Leung Philip W. T. Pong

Magnetic particle imaging (MPI) is a promising medical imaging technique producing quantitative images of the distribution of tracer materials (superparamagnetic nanoparticles) without interference from the anatomical background of the imaging objects (either phantoms or lab animals). Theoretically, the MPI platform can image with relatively high temporal and spatial resolution and sensitivity....

2016
Seyedeh Masumeh Ghaseminezhad Seyed Abbas Shojaosadati

Green synthesis of nanoparticles by using starch has recently attracted considerable attention due to their biodegradability, non-toxicity, and cost effectiveness. The data presented in this article are related to the article entitled "Evaluation of antibacterial activity of Ag/Fe3O4 nanocomposites synthesized by using starch" (Ghaseminezhad and Shojaosadati, 2016) [1]. Here, Fe3O4 nanoparticle...

2010
Serhiy Z. Malynych Alexander Tokarev Stephen Hudson George Chumanov John Ballato Konstantin G. Kornev

Imaging of microand nanofluidics is a challenge since the size of the channels is so small that the installment of additional optical and mechanical switches is very difficult. The size of the device and associated increase in viscous dissipation constitute another constraint. In response to these limitations, this work proposes and demonstrates the manipulation of light by adding a functional ...

2007
Sasmita Mohapatra Dibyarupa Pal Sudip K. Ghosh Panchanan Pramanik

We report a novel purification system for 6 His-tagged proteins by magnetic affinity separation. We have developed superparamagnetic Fe3O4@SiO core-shell particles with immobilized surface iminodiacetate groups to chelate with Ni. This Ni magnetic silica nanoparticle has been shown as an efficient carrier, binder and anchor to obtain his-tagged protein directly from total cell lysate. The struc...

2007
Chia-Yu Lin Kuo-Chuan Ho

Superparamagnetic magnetite nanoparticles (MNPs), Fe3O4, were synthesized via the modified coprecipitation method. The morphology of these MNPs is polyhedral. The particle size of MNPs ranged from 20 to 100 nm. For combined hyperthermia and thermoresponsive drug delivery applications, the heating element, MNPs, in the core of drug carriers should increase the temperature of the target up to 43 ...

2013
Lotfi Barhoumi David Dewez

Toxicity of superparamagnetic iron oxide nanoparticles (SPION) was investigated on Chlorella vulgaris cells exposed during 72 hours to Fe3O4 (SPION-1), Co0.2Zn0.8Fe2O4 (SPION-2), or Co0.5Zn0.5Fe2O4 (SPION-3) to a range of concentrations from 12.5 to 400 μg mL(-1). Under these treatments, toxicity impact was indicated by the deterioration of photochemical activities of photosynthesis, the induct...

2016
Germán Plascencia-Villa Arturo Ponce Joanna F. Collingwood M. Josefina Arellano-Jiménez Xiongwei Zhu Jack T. Rogers Israel Betancourt Miguel José-Yacamán George Perry

Abnormal accumulation of brain metals is a key feature of Alzheimer's disease (AD). Formation of amyloid-β plaque cores (APC) is related to interactions with biometals, especially Fe, Cu and Zn, but their particular structural associations and roles remain unclear. Using an integrative set of advanced transmission electron microscopy (TEM) techniques, including spherical aberration-corrected sc...

2013
Hossein Naeimi Zahra Sadat Nazifi

ABSTRACT The functionalization of silica-coated Fe3O4 magnetic nanoparticles (Fe3O4@SiO2) using chlorosulfonic acid were afforded sulfonic acid-functionalized magnetic Fe3O4 nanoparticles (Fe3O4@SiO2-SO3H) that can be applied as an organic-inorganic hybrid heterogeneous catalyst. The used Fe3O4 magnetic nanoparticles are 18-30 nm sized that was rapidly functionalized and can be used as catalyst...

2015
Wenzheng Yu Lei Xu Nigel Graham Jiuhui Qu

A coagulation (FeCl3)-ultrafiltration process was used to treat two different raw waters with/without the presence of Fe3O4 nanoparticle contaminants. The existence of Fe3O4 nanoparticles in the raw water was found to increase both irreversible and reversible membrane fouling. The trans-membrane pressure (TMP) increase was similar in the early stages of the membrane runs for both raw waters, wh...

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