We then demonstrate application of the extracted parameters to obtain the band alignment of alpha-Ge2Sb2Te5 with various other materials such as SiO2, giving good agreement with experimental results. (C) 2010 American Cl-amidine mw Institute
of Physics. [doi: 10.1063/1.3475721]“
“Objective. The purpose of this study was to evaluate the effect of biologic characteristics of platelet-rich plasma ( PRP) and platelet-rich fibrin (PRF) on proliferation and differentiation of rat osteoblasts.
Study design. Blood samples were collected from 14 healthy volunteers (7 male) with a mean age of 23.2 +/- 2.24 years. PRP and PRF were prepared with standard protocols. The exudates of PRP and PRF were collected at the time points of 1, 7, 14, 21, and 28 days. The levels of platelet-derived growth factor AB (PDGF-AB) and transforming growth factor beta 1 (TGF-beta 1) were quantified in PRP and PRF. Then the exudates of PRP and PRF were used to culture rat calvaria osteoblasts. The biologic characteristics of osteoblasts were analyzed in vitro for 14 days.
Results. PRP released the highest amounts of TGF-beta 1 and PDGF-AB at the first day, followed by significantly decreased release at later time points. PRF released the highest amount of TGF-beta 1 at day 14 and the highest amount of PDGF-AB at day 7. Exudates of PRP
collected at day 1 and exudates of PRF collected at day 14 expressed maximum alkaline phosphatase (ALP) activity, though no significance was shown. Cells treated with exudates of this website PRF collected at day 14 reached peak mineralization significantly more than both negative control and positive control groups. PRF
is superior to PRP, from the aspects of expression of ALP and induction of mineralization.
Conclusions. PRF released autologous growth factors gradually and expressed stronger and more durable effect on proliferation and differentiation of rat osteoblasts THZ1 inhibitor than PRP in vitro. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2009;108:707-713)”
“Microalloying with 1 at. % zirconium dramatically increases the critical size from 3 to 8 mm for Gd-based bulk metallic glasses (BMGs). The enhancement of glass-forming ability originates from the increase in the packing efficiency and high compound forming tendency between Zr and major constituent elements. The maximum magnetic entropy change (-Delta S(Mmax)) and relative cooling power (RCP) of Gd(52.5)Co(18.5)Al(29-x)Zr(x) (x=1) BMG are 9.6 J/kg K and 8.9 x 10(2) J/kg, respectively. Heat capacity data demonstrate that the broad magnetic transition arising from topological disorder is responsible for the high RCP of Gd-based amorphous magnetocaloric materials. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3481923]“
“Objective. The aim was to investigate the safety and efficacy of clofazimine for the treatment of recurrent aphthous stomatitis.
Study design.