Biochemical estimation of NADH concentration is a useful method for monitoring cellular metabolism, because the NADH/NAD+ reduction-oxidation pair is crucial for electron transfer in the mitochondrial electron chain. In this article, we present a novel method for deriving functional maps of intracellular reduction-oxidation ratio in vivo via measurement of the fluorescence lifetimes and the rat...

* Presented as Paper IEPC-01-84 at the 27 International Electric Propulsion Conference, Pasadena, CA, 15-19 October, 2001. † Copyright © 2001 by the Electric Rocket Propulsion Society. All rights reserved. A grid lifetime model is presented for the lifetime estimation of a 3-grid ion engine system. The failure mechanism considered in the model is electron backstreaming due to charge exchange io...

The microstructures of the thermally grown oxide (TGO) in as-coated electron beam physical vapor deposited (EB-PVD) thermal barrier coatings (TBCs) were examined by scanning transmission electron microscopy (STEM) as a function of demonstrated TBC lifetime in a thermally cycled environment. As-coated TBC specimens were selected for analysis based on individual statistical significance in overal...

Minority Carrier Lifetime in Beryllium-Doped InAs/InAsSb Strained Layer Superlattices Report Title Minority carrier lifetimes in undoped and Beryllium-doped Type-2 Ga-free, InAs/InAsSb strained layer superlattices (SLS) with energy gaps as low as 0.165 eV were determined from photoluminescence kinetics. The minority carrier lifetime of 450 ns at 77 K in the undoped SLS confirms a high material ...

Minority hole diffusion length and lifetime were measured in independent experiments by electron beam-induced current time-resolved cathodoluminescence Si-doped ?-Ga2O3 Schottky rectifiers irradiated with 18 MeV alpha particles 10 protons. Both exhibited a decrease increasing temperature. The non-equilibrium minority mobility was calculated from the independently lifetime, indicating that so-ca...

We compute the single particle inverse lifetime, evaluated in the superconducting state. Within the BCS framework, the calculation can be done nonperturbatively, i.e. poles can be found well away from the real axis. We find that perturbative calculations are in good agreement with these results, even for non-zero impurity scattering. With electron-phonon scattering added to the problem, we use ...

Low-energy dissociative electron attachment to BrCN and CBrCl3 over the temperature range 300–450 K is examined by measuring the velocity and angular distributions of negative ions produced through electron transfer in collisions with velocity-selected K(np) Rydberg atoms. The data are analyzed using a Monte Carlo collision code that models the detailed reaction dynamics. Measurements with BrCN...

Title of dissertation: Three-Body Recombination and Rydberg Atoms in Ultracold Plasmas Robert S. Fletcher, Doctor of Philosophy, 2008 Dissertation directed by: Professor Steven Rolston Department of Physics Ultracold neutral plasmas, created by photoionizing samples of laser-cooled atoms, have well-controlled initial density and temperature parameters. With initial particle peak densities of ∼ ...

Various non deterministic aspects of object creation in database trans formations are discussed from a modeling as well as from an expressive

The authors propose the use of two new standardized measures of risk, the standardized lifetime risk and the standardized number of years of life lost. These measures maintain the advantages of standardized rates but are more readily understood without special training. In this paper, standardizing weights based on 1992 data from England and Wales are provided, and the new measures are illustra...