A preliminary analysis of the radiation burden of a typical Mars lander mission

Predicted radiation dosage for Mars lander missio

A mathematical model for the thermoradiation inactivation of dry Bacillus subtilis var. Niger spores

Empirically based kinetic model describing synergistic inactivation of dry Bacillus subtilis by combined heat and gamma radiation environmen

Production of Low Concentration Particulate Aerosols by a Sonic Disseminator Technique

Ultrasonic vibrator for producing stable, low concentration, bacterial spore aeroso

Unemployment insurance: a safety net for victims of intimate partner violence and their children

The Centers for Disease Control (CDC) estimates that over 5 million intimate partner assaults are perpetrated against women each year, and they lose more than 8 million days of work annually. Expanding Unemployment Insurance (UI) benefits to victims of domestic violence is one mechanism for supporting women as they seek to escape the violence in their lives

The relation between momentum transfer and capture and total scattering cross sections for ion-dipole collisions

Numerical values of momentum transfer cross sections sigma sub m for ion-dipole collisions are compared with the corresponding capture cross sections sigma sub c as a function of ion velocity and rotational temperature. For values of dipole moment mu from 1 to 4 Debyes the sigma sub m/sigma sub c ratio is in the range 1.2 to 2.0 (roughly). This is in contrast to the simple relation for Langevin collisions where sigma sub m/sigma sub c is equal to or approximately 1.10 independent of polarizability of the target atom. At low temperatures, the momentum transfer cross sections can be as large as 2000 A squared but they are only about 15 to 30 percent of the total scattering cross sections sigma sub S

Crotalus ruber

Number of Pages: 17Integrative BiologyGeological Science

A Customized 3D GPU Poisson Solver for Free Boundary Conditions

A 3-dimensional GPU Poisson solver is developed for all possible combinations of free and periodic boundary conditions (BCs) along the three directions. It is benchmarked for various grid sizes and different BCs and a significant performance gain is observed for problems including one or more free BCs. The GPU Poisson solver is also benchmarked against two different CPU implementations of the same method and a significant amount of acceleration of the computation is observed with the GPU version.Comment: 10 pages, 5 figure

Comparison of numerical capture cross sections with experimental reaction cross sections for NH3/+/ + NH3

Comparing numerically calculated capture cross sections with experimental reaction cross sections for NH3/+/ + NH