Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
We report on the synthesis of electrode layers by Pulsed Laser Deposition technique. We selected Nickel Oxide-8Yttria-Stabilized Zirconia as anode, La0.6Sr0.4Co0.2Fe0.8O3−δ perovskite material as cathode, and Yttria doped (Ceria–α Alumina) as electrolyte. We studied electrode structure (average grain size, porosity, and grain shape), the deposition uniformity and electrode-electrolyte interfaces. The electrodes were investigated in terms of
Read moreIn this paper we present electron paramagnetic resonance (EPR) and Mossbauer (transmission method, TMS and measurements in the scattering method, CEMS) experiments on 57Fe (0.1– 1 at.%) doped nanocrystalline anatase-type TiO2, synthesized by a hydrothermal method. Different Fe3+ and Fe2+ ions positions, with various hyperfine interactions evidenced in Mossbauer spectra (MS), confirm a partial magnetic ordering at room temperature. The magnetic
Read moreFemtosecond laser ablation of TiO2 thin films was studied as a function of laser pulse energy and number of pulses. The ablated holes were characterized by atomic force microscopy and the optimum irradiation conditions were chosen for producing a periodic structure of triangular lattice of air holes in the TiO2 films. A photonic structure with period of 1.5 μm was designed to show photonic band gap in the near-infrared, at the telecommunication
Read moreThis study is to understand the nature and functional significance of the activated cell death programs and rehabilitation signs during late vascular changes after brain injury. We used light and transmission electron microscopy to describe changes of cells within the vascular endothelium and tunica media of the cortical arteries four weeks after craniocerebral traumatism. Within tunica media of the posttraumatic damaged artery, apoptotic and paraptotic
Read moreAfter the second World War, Romania became part of the communist block. As a part of ideology the Communist Party initiated an universal free medical care, accessible to all. Establishment a lot of dispensary means available alternative for a poor population that has never received adequate medical care. But later, in dictatorship, deficiency of adequate medical conditions, increased isolation of doctors, transformes their peronality: he became tired,
Read moreThe relationship between medicine and natural sciences was closer in earlier times of the history of medicine in Transylvania than today: at the end of the 18th century, physicians and surgeons of the Comitats (the regional administrative divisions) collected minerals and plants for the museums of natural sciences and for the high school biology labs. In 1763, physicians were obliged to study and describe the mineral waters of each Comitat.100 years
Read moreThe historical context of nineteenth and twentieth centuries was not favorable for the formation of a honest doctor-doctor relationship based on trust and fraternal support. In an era characterized by the struggle for patients and fees, the involvement of the State tried to rebuild the positions, but will lead to an quasi- feudal hierarchy of profession. Meanwhile were founded the first professional organizations, the medical colleges. History and
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