The chain oxidation of glyceraldehyde-3-phosphate dehydrogenase *NADH by perhydroxyl radicals and propagated by molecular oxygen was studied by the xanthine-xanthine oxidase system, ‘OCo y-ray, and pulse radiolysis. The chain length, amount of NADH oxidized per HOz generated, increases with increasing acidity of the medium and reaches a value of 73 at pH 5.0. The rate constant for the oxidati...

When a time-dependent partial differential equation (PDE) is discretized in space with a spectral approximation, the result is a coupled system of ordinary differential equations (ODEs) in time. This is the notion of the method of lines (MOL), and the resulting set of ODEs is stiff; the stiffness may be even exacerbated sometimes. The linear terms are the primarily responsible for the stiffness...

Reactions that inter-convert OH and HO2 are directly involved in the catalytic removal of O3 in the lower stratosphere and in the catalytic production of O3 in the upper troposphere. The agreement between the measured and modeled [HO2]/[OH] tests our current understanding of this important chemistry. Recent changes to the recommended rate constants for OH+O3 and HO2+O3 call into question how ac...

Literature Ricardo La Hoz, MD; Milner Staub, MD; Stephen Moser, PhD; John Baddley,; Peter Pappas, MD; Section on Infectious Diseases, Wake Forest University, WinstonSalem, NC; Department of Medicine, University of Washington, Seattle, WA; Department of Pathology, University of Alabama at Birmingham, Birmingham, AL; Division of Infectious Diseases, University of Alabama at Birmingham, Birmingham...

G. Björk,1 H. de Guise,2 A. B. Klimov,3 P. de la Hoz,4 and L. L. Sánchez-Soto4 1Department of Applied Physics, Royal Institute of Technology (KTH), AlbaNova University Center, SE-106 91 Stockholm, Sweden 2Department of Physics, Lakehead University, Thunder Bay, Ontario, Canada P7B 5E1 3Departamento de Fı́sica, Universidad de Guadalajara, 44420 Guadalajara, Jalisco, Mexico 4Departamento de Óptica...