We perform first-principles calculations to predict the morphology of L10 ordered FePt nanoparticles grown on Mg(Ti)O substrates with relevance to application in heat-assisted magnetic recording (HAMR) media. We show how incorporation of Ti into MgO substrates reduces the FePt adhesion energy from −1.29 (pure MgO) to −2.35 J/m2 (pure TiO). This effect is due to the formation of strong Fe-Ti bon...

Magnetic Shape-Memory (MSM) materials are a new category of actuator materials with the potential to produce both large actuator strain and rapid response. To explore the possibility of developing MSM materials based on Fe-Ni-Co-Ti alloys, the effects of chemical composition (Co/Ni ratio) and ausaging on microstructure and magnetic shapememory response were studied. A suitable choice of chemica...

BACKGROUND Magnetic nanoparticles have been widely applied in recent years for biomedical applications. Signal intensity (SI) of magnetic resonance (MR) images depends on the concentration of nanoparticles. It is important to find the minimum concentration of iron oxide nanoparticles that produces maximum SI and determines the minimum injection dose for clinical studies. OBJECTIVES This study...

The biocompatibility of two different titanium alloys, Ti-6Al-4V ELI and Ti-5Al-2, 5Fe, and pure titanium were evaluated. The results were as follows: 1) Titanium alloys were implanted into the dorsal subcutaneous tissues of the Hartley guinea-pig for 12 weeks, immersed in calf serum or in Ringer's solution for 8 weeks. The surface changes of the titanium alloys were observed by SEM and the che...

In to day’s heal th ca re system the pre va len ce of me di cal er ro rs see ms to be hi gh as sta ted by the re po rt of the In sti tu te of Me di ci ne (IOM). An er ror rate of about 10% in cli ni cal me di cal la bo ra to ries has been con sis ten tly re por ted in the li te ra tu re. Mo st of the se er ro rs oc cur in the pre-a na lyti cal phase. Be cau se on ly a sma ll num ber of er ro rs...

Three certified samples of different matrices (Soil-5, SL-1/IAEA and SARM-4/SABS) were quantitatively analysed by energy dispersive X-ray fluorescence with radioisotopic excitation. The observed errors were about 10-20% for the majority of the elements and less than 10% for Fe and Zn in the Soil-5, Mn in SL-1, and Ti, Fe and Zn in SARM-4 samples. Annular radioactive sources of Fe-55 and Cd-109 ...

Commercial talcs are pulverized mineral products with a variable chemical and mineralogic composition, widely used in industry. Although generally white, they have color variations. The aim of this study was to establish relationships between color parameters and the chemical and mineralogic composition of commercial talc samples, in order to investigate the causes of color. Chlorite, dolomite,...

We review the characteristics of nucleosynthesis in ’Hypernovae’, i.e., supernovae with very large explosion energies ( ∼ > 10 ergs). The hypernova yields compared to those of ordinary core-collapse supernovae show the following characteristics: 1) Complete Si-burning takes place in more extended region, so that the mass ratio between the complete and incomplete Si burning regions is generally ...

Qu ua al li it ty y A As ss su ur ra an nc ce e i in n T Te er rt ti ia ar ry y E Ed du uc ca at ti io on n: : C Cu ur rr re en nt t P Pr ra ac ct ti ic ce es s i in n O OE EC CD D C Co ou un nt tr ri ie es s a an nd d a a L Li it te er ra at tu ur re e R Re ev vi ie ew w o on n P Po ot te en nt ti ia al l E Ef ff fe ec ct ts s The opinions expressed in this paper are the sole responsibility of...