Sustainable human exploration of the Moon will largely rely on in-situ resource utilisation, such as using regolith in habitat construction. This paper investigates the relative effectiveness of a polymer-enriched regolith brick versus a multilayer configuration of bare regolith and successive polyethylene layers as a passive shielding solution, when irradiated with Galactic Cosmic Ray (GCR) protons. Radiation–matter interactions are simulated with RayXpert® software and the dose equivalent in the ICRU sphere behind a representative habitat wall is calculated. The secondary emission of neutrons and protons from the shielding solution is studied as well. This work provides a quantitative insight into how much polymer is required to achieve a significant improvement in terms of radiation protection when compared to a bare regolith wall. At least 30–50% of polyethylene by mass is required to be added to a regolith mix to achieve a significant advantage in radiation protection capabil
Unraveling Stochastic Productivity: A Comprehensive Guide – ictsd org ictsd.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from ictsd.org Daily Mail and Mail on Sunday newspapers.
Retiring at age 40 with $5 million means you have a high likelihood of supporting a comfortable lifestyle. This assumes you are a moderately risk-tolerant investor with a diversified portfolio that generates a quality return annually each year. It can … Continue reading → The post Is $5 Million Enough to Retire at 40? appeared first on SmartAsset Blog.
Solubilities and Self-Diffusion Coefficients of Light n-Alkanes in NaCl Solutions at the Temperature Range (278 15–308 15) K and Pressure Range (1–300) bar and Thermodynamics Properties of Their Corresponding Hydrates at (150–290) K and (1–7000) bar acs.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from acs.org Daily Mail and Mail on Sunday newspapers.