Super paramagnetic particles is a new class of magnetic materials that exhibit a susceptibility g near the value of one while most of natural paramagnetic materials have a magnetic susceptibility at least five orders of magnitude lower. Ferrofluid emulsion is one of such systems. A collection of iron oxide nanopanicles (in our case Fe304 with a radius of 6nm) dispersed When the volume fraction ...

Macroporous chitosan spheres encapsulating superparamagnetic iron oxide nanoparticles were synthesized by a facile and effective one-step fabrication process. Ferro-gels containing ferrous cations, ferric cations and chitosan were dropped into a sodium hydroxide solution through a syringe pump. In addition, a sodium hydroxide solution was employed for both gelation (chitosan) and co-precipitati...

The application of hyperthermia to cancer treatment is studied using a novel model arising from the fundamental principles of flow, mass and heat transport in biological tissues. The model is defined at the scale of the tumour microenvironment and an advanced computational scheme called the embedded multiscale method is adopted to solve the governing equations. More precisely, this approach inv...

introduction: apoptosis is a major consequence of ionizing radiation in proliferative tissues and quantification of the apoptotic cells could be helpful for noninvasive assessment and estimation of the radiation absorbed dose. annexin v conjugated with super paramagnetic iron oxide nanoparticles (anx-spio) is a biological probe for detection of apoptotic cells using magnetic resonance imaging. ...

The values of proton relaxation times (T^ and T2) of human or animal tissues play an important role in NMR imaging since the image contrast is mainly determined by these parameters. Based on T^ and T2 measurements of healthy and abnormal tissues pulse sequences can be proposed to improve the diagnosis of a specific disease. Many factors can effect relaxation rates such as the rate of water exch...

DETC: diethyldithiocarbamate, DMPO: 5,5-dimethyl-1-pyrroline N-oxide, DNIC: di-nitrosyl-iron complex, DTCS: N-(dithiocarboxy)sarcosine, EDRF: endothelium-derived relaxing factor, EPR, ESR: electron paramagnetic resonance; electron spin resonance, cGMP: cyclic GMP, Hb: hemoglobin, LPS: lipopolysaccharide, Mb: myoglobin, MGD: N-methyl-D-glucamine dithiocarbamate, MNIC: mono-nitrosyl-iron complex,...

Paramagnetic complexes of iron (III), manganese (II), and cobalt (II) protoporphyrins IX and apohemoproteins react with nitric oxide to form spectroscopically distinct compounds. Optical and electron paramagnetic resonance (EPR) studies suggest that a l-electron transfer between nitric oxides and metal ions which occurs in these reactions results in the formation of spin-paired complexes of the...

Paramagnetic complexes of iron (III), manganese (II), and cobalt (II) protoporphyrins IX and apohemoproteins react with nitric oxide to form spectroscopically distinct compounds. Optical and electron paramagnetic resonance (EPR) studies suggest that a l-electron transfer between nitric oxides and metal ions which occurs in these reactions results in the formation of spin-paired complexes of the...

Paramagnetic complexes of iron (III), manganese (II), and cobalt (II) protoporphyrins IX and apohemoproteins react with nitric oxide to form spectroscopically distinct compounds. Optical and electron paramagnetic resonance (EPR) studies suggest that a l-electron transfer between nitric oxides and metal ions which occurs in these reactions results in the formation of spin-paired complexes of the...