as of clinical events in patients with diabetes mellitus. Renin-angiotensin system blockade seems to be effective in preventing and/or regressing alterations in the microvascular structure. (C) 2009 Elsevier B.V. All rights reserved.”
“In order to promote the technological applications of perovskite manganites, a great fundamental interest has been devoted to tailoring and/or

enhancing their magnetotransport properties. Design and fabrication of manganite-based Protein Tyrosine Kinase inhibitor nanocomposites offer great potential to tailor the magnetotransport properties. In this work, we illustrate the promising concept of 0-3 type manganite/insulator composites (where manganite nanoparticles are uniformly and discretely embedded in a three-dimensional-connectivity insulator matrix)

through the example of the La(0.67)Ca(0.33)MnO(3) (LCMO)/MgO system. We present a promising strategy, selleck compound which is based on the creation of core (LCMO)-shell (MgO) composite powders, for the synthesis of 0-3 type LCMO/MgO composites. A modified polyacrylamide gel method has been developed to prepare the core-shell structured LCMO/MgO composite powders. Besides its ability to create well-defined core-shell composite structures, the present gel method also allows the production of nanopowders with uniform particle size and in spherical shape. In Selleckchem Copanlisib our (1-x)LCMO/xMgO composite system, the lattice of LCMO is found to expand with rising MgO concentration x, yielding a bulk tensile strain. The increase in the tensile strain with x yields to a structural phase transition in the LCMO phase from an orthorhombic Pnma structure (x <= 0.2) to a rhombohedral R (3) over barc structure (x >= 0.3), and this structural transition leads to a relaxation of the strain. The strain effects induced by the MgO second phase exert a great influence on the ferromagnetic transition temperature T(C). The composite system exhibits a percolative

behavior in the conductivity, and the metal-insulator transition temperature T(M-I) decreases with x and is finally suppressed as the MgO content increases up to x=0.3. An enhancement in magnetoresistance (MR) is observed at low temperatures for the composites, and the low-field sensitivity of MR gets enhanced with the increase in MgO content. This work provides a promising method for manipulating the magnetotransport properties of manganites by composites with a proper insulator phase in a 0-3 connectivity fashion. (C) 2009 American Institute of Physics. [doi:10.1063/1.3262624]“
“Methods: ICD patients (n = 246) were randomized to usual care (UC), group (GRP), or telephone counseling (TC) intervention that included education, symptom management, and coping skill training. Participants were 58 +/- 11 years, 73% men, and 23% minorities.