Water-Mediated Conversion of BaTiO Nanoparticles into BaCO Nanorods in Electrospun Polymer Fibers: Implications for Carbon Capture Applications.

Under ambient conditions and in aqueous environments, transformations of nanoparticle-based ferroelectric components can raise important stability issues that are relevant for applications as multilayer capacitors, flexible piezoelectrics, or biomedical devices. We show that X-ray amorphous BaTiO nanoparticles that were grown by flame spray pyrolysis and which can be incorporated into electrospun polymer fibers undergo incongruent Ba dissolution in the presence of water. At pH > 5 and in contact with air, corresponding Ba solutes spontaneously convert into crystalline BaCO needles to produce characteristic nano- and microstructures.

Assessment of the role of translationally controlled tumor protein 1 (TPT1/TCTP) in breast cancer susceptibility and ATM signaling.

Background And Purpose: The translationally controlled tumor protein 1 (TPT1/TCTP) has been implicated in the intracellular DNA damage response. We tested the role of TPT1 in breast cancer (BC) predisposition and re-evaluated its function in Ataxia-Telangiectasia mutated (ATM)-mediated damage recognition and DNA repair.

Material And Methods: The coding sequence was scanned for mutations in genomic DNA from 200 breast cancer patients.

Trends in positive drug tests, United States Air Force, fiscal years 1997-1999.

We investigated the relationship between various demographic factors and the risk of testing positive for marijuana or cocaine use in the U.S. Air Force in fiscal years 1997 through 1999.

Quantitative methods for environmental justice assessment of transportation.

Application of Executive Order 12898 to risk assessment of highway or rail transport of hazardous materials has proven difficult; in general, the location and conditions affecting the propagation of a plume of hazardous material released in a potential accident are unknown. Therefore, analyses have only been possible in a geographically broad or approximate manner. The advent of geographic information systems and development of software enhancements at Sandia National Laboratories have made kilometer-by-kilometer analysis of populations tallied by U.

Statistical evaluation of population data for calculation of radioactive material transport accident risks.

Calculation of accident dose-risk estimates with the RADTRAN code requires input data describing the population likely to be affected by the plume of radioactive material (RAM) released in a hypothetical transportation accident. In the existing model, population densities within 1/2 mile (0.8 km) of the route centerline are tabulated in three ranges (Rural, Suburban, and Urban).

Death among U.S. Air Force basic trainees, 1956 to 1996.

Background: Basic military training in the U.S. Air Force exposes recruits to multiple environmental and psychological stressors.