INTRODUCTION Magnetic resonance (MR) imaging is suitable for noninvasive long-term tracking. We labeled human induced pluripotent stem cell-derived neural precursors (iPSC-NPs) with two types of iron-based nanoparticles, silica-coated cobalt zinc ferrite nanoparticles (CZF) and poly-l-lysine-coated iron oxide superparamagnetic nanoparticles (PLL-coated γ-Fe2O3) and studied their effect on proli...

In this paper, the structure of Al2O3 is modified with magnesium to synthesize MgAl2O4 as an oxygen carrier (OC) support. The surface properties and structural stability of the modified support are improved by the incorporation of magnesium in the structure of the support and additionally by narrowing the pore size distribution (about 2.3 nm). Then, iron oxide is impregnated on both an Al2O3 su...

Nanoteknolojik gelişmelere paralel olarak günümüzde nanopartiküllerin ortamlardaki konsantrasyonları gittikçe artmaktadır. Çevre üzerindeki etkileri yeterince bilinmeyen bu materyallerin tanınması ve etkilerinin tespiti önem arz etmektedir. Bu çalışma, Kızılçamın (Pinus brutia Ten.) ana yayılış sahası dışında bulunan doğal kızılçam meşceresinde gerçekleştirilmiştir. Yarı kurak iklimin hâkim old...

Maghemite/magnetite nanocomposite (γ-Fe2O3/Fe3O4) was prepared via an electrochemical method using pulse alternating current and applied for electrocatalytic reduction sensing of hydrogen peroxide. The structural compositional analysis the γ-Fe2O3/Fe3O4 characterized by XRD, SEM, TEM XPS. Its thermal decomposition behavior studied TG/DSC. mechanism formation proposed. Furthermore, H2O2 performa...

Hypoxia-induced cancer stem cells have been known to be involved in tumour metastasis, resistance to chemo/radio therapy and tumour recurrence. Magnetic Resonance Imaging is a widely used imaging tool for cancers in clinics and research. To develop T1-positive and T2-negative dual mode MRI agents for more comprehensive and accurate diagnostic information under hypoxic conditions, a hypoxia-indu...

Although there is extensive literature covering the biomedical applications of superparamagnetic iron oxide nanoparticles (SPIONs), the phase of the iron oxide core used is not often taken into account when cell labelling and tracking studies for regenerative medicine are considered. Here, we use a co-precipitation reaction to synthesise particles of both magnetite(Fe3O4) and maghemite(γ-Fe2O3)...

Iron occurs mainly as oxide ores, though it is also found in smaller quantities as its sulfide and carbonate. These other ores are usually first roasted to convert them into the oxide. On a world scale the most important ore is haematite (Fe2O3), but in New Zealand the starting materials are magnetite (Fe3O4) and titanomagnetite (Fe2TiO4). The oxides are reduced with carbon from coal, through t...

The properties of a magnetically ordered buried Fe oxide layer are presented. This oxide has a room-temperature magnetization exceeding that of Fe3O4 by 42% and of gamma-Fe2O3 by 89%. The oxide consists of a component (70%) with a net moment of 2.0 micro(B)/Fe ion, while the remaining spins yield no net moment. The oxide magnetization is stabilized in part by the proximate Fe metal.