PECULIARITIES OF MESENCHYMAL STEM CELLS AND THE LEVEL OF GDF 15 IN THE BONE MARROW OF PATIENTS WITH HIGH THALASSEMIA

Mesenchymal stem cell (MSC) are the important component of the microenvironment of the bone marrow and. Playing an active role in case of ineffective erythropoiesis they take part in regulation of erythropoiesis through the synthesis of cytokines. In the present study proliferative characteristics, morphology, phenotype and differentiation capacity of MSCs were examined. In addition, culture supernatants and bone marrow plasmas were analyzed for GDF 15

Investigation of using bleaching earth and activated carbon mixturein sunfloweroilrefining

Adsorption is one commonly used technique for treatment of sunflower oil. In this study, activated carbon and bleaching earth as a bleaching agent mixed with certain proportions and1% of the mixture added to sunflower oil in the bleaching process. The combination of bleaching earth and activated carbon produced higher adsorption capacity than the single bleaching earth. This article focuses more particularly on heavy metals and polycyclic aromatic hydrocarbons (PAHs) removal. It was detected that, the mixture is an excellent adsorbent in the adsorption of PAHs and metals from sunflower oil with the highest adsorption capacity. The results showed that, the adsorption of metals and PAHs depend strongly on activated carbon and decreased with increasing activated carbonin mixture and the maximum adsorption was reached after using B5 (95 % bleaching earth and 5 % activated carbon combination)

A special type of neutron-proton pairing interaction and the moments of inertia of some deformed even-even nuclei in the rare earth region

In this work, the effect of a special type of neutron-proton pairing interaction on the moments of inertia of some deformed nuclei in the rare earth region is investigated. First, making a perturbative approximation, we assume that the form of the equations of the BCS theory and usual Bogolyubov transformations are unchanged. Second, we use a phenomenological method for the strength of this neutron-proton pairing interaction introducing a parameter. Calculations show that this interaction is important far the ground-state moments of inertia and that it could be effectual in other nuclear phenomena

Nature of the scissors mode in nuclei near shell closure: the tellurium isotope chain

Quasiparticle random-phase approximation calculations, where rotational, translational and Galilean invariance are restored selfconsistently by using separable effective forces, are presented for the ground state dipole response in the even-mass isotopes Te122-130. The simultaneous description of El and M1 transitions permits a direct comparison with nuclear resonance fluorescence experiments. The extracted properties of the scissors mode reveal a considerable complexity in these near closed-shell nuclei: neither approaches successful in deformed nuclei nor a two-phonon picture suggested near shell closures nor the interacting boson model can fully account for the data. (C) 2002 Elsevier Science B.V. All rights reserved

The dependence of the scissors mode on the deformation in the Ce140-150 isotopes

In this study, using a rotational invariant microscopic model which is free from any adjustable parameter in the random phase approximation, the total M1 transition intensities of the 1(+) levels arising from the scissors mode for the Ce isotopes up to 4 MeV have been calculated and their dependence on the square of the deformation parameter delta(2) has been investigated. In the Ce isotopes, the dependence of the total B(M I) transition on delta(2) is linear as in the case of Nd and Sm isotopes. The separation of the rotational branch from the 1(+) states causes the fragmentation of the scissors mode and the collectivization of low-lying states

The effect of the neutron-proton pairing interaction on the excited 0+states in some deformed nuclei of the rare-earth region

In this work, the effect of the special type of neutron-proton (snp) interaction which was proposed by the authors previously, on the excited 0+ states in deformed even-even nuclei is investigated using the Quasiparticle Random Phase Approximation (QRPA) method. The results show that the energies of the 0+ states change and a new state depending on the value of the parameter q below the gap energy level appears

Change of the dipole strength distributions between the neighbouring gamma-soft nuclei Pt-194 and Pt-196

A nuclear resonance fluorescence experiment with two highly efficient EUROBALL Cluster detectors has been performed on the gamma-soft nucleus Pt-194. Dipole excitations were observed between 2 and 4 MeV excitation energy. They are tentatively interpreted as the main fragments of the scissors mode based on the measured excitation strengths and a comparison to microscopic calculations in the framework of the quasiparticle random phase approximation (QRPA). The data indicate large differences to the neighbouring isotope Pt-196: a doubling of the observed dipole strength and a shift of the energy centroid by about 600 keV None of the currently available models is able to reproduce these features consistently in both nuclei. (C) 2002 Elsevier Science B.V All rights reserved