Hybrid porous carbon fibers with strong anion-exchangeable functional groups (HACAX) were synthesized by alkylation of pyrolyzed polyacrylonitrile. HACAX exhibits generic stable positively charged functional groups. This expands the applications of porous carbon media for interacting with anions without adjusting pH, such as Cr(vi) adsorption at natural pH.

' The kinetics of recuperation following initial doses of 470 rads of 56 Mev protons and 350 rads of Co" 7 radiation were investigated by means of the paired-dose method. By using semilog plots, recovery half-times of 4.85 ± .85 days and 2.02 ± .45 day» were found after initial doses of the protons and Co' 7 radiation, respectively.

PURPOSE Electron tubes with small radii are useful to treat narrow regions which cannot accommodate normal electron applicators. In small electron fields, it is not trivial to estimate restricted mass stopping power ratio (MSR), which is needed to evaluate dose from ion chamber measurement. We studied MSRs in small electron tube fields using the Monte Carlo simulation. METHODS Electron tubes ...

AIM To verify the impact of breast cancer screening in women aged 40-49 years in one region of Brazil. PATIENTS AND METHODS This is a cross-sectional study, targeted to asymptomatic women aged 40-69 years who had breast cancer screening mammography performed between January 2003 and December 2007. Logistic regression was used to estimate the risk of breast cancer by age groups (40-49, 50-59, ...

Non-relativistic Faddeev and Faddeev-Yakubovsky calculations were made for K(-)pp, K(-)ppn, K(-)K(-)p and K(-)K(-)pp kaonic nuclear clusters, where the quasi bound states were treated as bound states by employing real separable potential models for the K(-)-K(-) and the K(-)-nucleon interactions as well as for the nucleon-nucleon interaction. The binding energies and spatial shrinkages of these...

Aim . To study the prevalence of atrial fibrillation (AF) in Russian urban population cohort aged 45-69 years and its changes over 13-year follow-up during aging. Material methods This cross-sectional long-term prospective included random sample men women (n=9360, HAPIEE project, Novosibirsk), which was examined 2003-2005 re-examined twice followed up for about 13±1,00 13,1±2,17 women. The inci...