J Heart Lung Transplant 2010;29:562-567 (C) 2010 International Society for Heart and Lung Transplantation. All rights reserved.”
“We report the magnetic and transport properties of polycrystalline Nd0.58-xGdxSr0.42MnO3 (x similar to 0.0, 0.04, 0.08, 0.12, 0.16, 0.20, 0.25, 0.30, 0.35, and 0.42). All the samples are single phase and have grain size similar to 1-2 mu m. As the variance sigma(2) increases, the paramagnetic-ferromagnetic transition shows a gradual decrease and broadening, while the decrease KPT-8602 mw in insulator metal transition is sharpened.
However, near equality of T-C and T-IM at intermediate values of sigma(2) could be understood in terms of the competing quenched and the grain boundary disorder. The variation in peak magnetoresistance (MR) (maximum MR around T-C/T-IM) with sigma(2) shows that maximum low field MR approximate to 35% at H=3 kOe (68% at H=10 kOe) is centered around sigma(2)=0.009 857 angstrom(2) (x=0.25). This shows that huge intrinsic MR can be obtained at relatively higher temperatures and lower magnetic fields in the region of enhanced phase fluctuations. (C) 2010 American Institute of Physics. [doi:10.1063/1.3358618]“
“Mesophyll diffusion conductance to CO(2) (g(m)) is an important
leaf characteristic determining the drawdown of CO(2) from substomatal cavities (C(i)) to chloroplasts (C(C)). Finite g(m) results in modifications in the shape of the net assimilation (A) versus C(i) response curves, with the final outcome of reduced maximal carboxylase activity of Rubisco (V(cmax)), and a greater ratio LY333531 nmr of the capacity for photosynthetic electron transport to V(cmax) (J(max)/V(cmax)) and alterations in mitochondrial respiration rate (R(d)) when estimated from A/C(i) responses without considering g(m). The influence of different Farquhar et al. model parameterizations on daily photosynthesis under non-stressed (C(i) kept constant throughout the day) and stressed conditions (mid-day reduction in C(i)) was compared. The model was parameterized on the basis of A/C(C) curves and A/C(i) curves using both the conventional
GSK1838705A research buy fitting procedure (V(cmax) and R(d) fitted separately to the linear part of the response curve and J(max) to the saturating part) and a procedure that fitted all parameters simultaneously. The analyses demonstrated that A/C(i) parameterizations overestimated daily assimilation by 6-8% for high g(m) values, while they underestimated if by up to 70% for low g(m) values. Qualitative differences between the A/C(i) and A/C(C) parameterizations were observed under stressed conditions, when underestimated V(cmax) and overestimated R(d) of A/C(i) parameterizations resulted in excessive mid-day depression of photosynthesis. Comparison with measured diurnal assimilation rates in the Mediterranean sclerophyll species Quercus ilex under drought further supported this bias of A/C(i) parameterizations.