Membrane permeation is frequently modeled using a vector of relative permeabilities for each component that is permeated. However, no membrane material will have truly uniform permeability; instead, any particular membrane material exhibits... continue reading
In a typical household there are appliances for heating and other appliances for cooling. The former, including geysers, stoves, ovens and space heaters, typically use a heating element - an inefficient approach from an energy usage standpoint.... continue reading
Dronebox is a network of physical spaces in public places (although there could be some private ones), where deliveries can be made to by a drone (or something else when it fits). With this, customers can order to their favorite provider to... continue reading
The use of DNA (both modern and ancient: aDNA) for purposes of genetic traceability, ethnic filiation, migration of populations, etc. is currently experiencing exponential growth. These studies are (it is hoped) initially motivated by scientific... continue reading
The ultimate beneficiary of a biomedical journal article should be the patient. To realize this benefit, a publication must provide both the rational evidence plus a reason to act on the part of a healthcare professional. Sponsors of clinical... continue reading
Many medical education studies pursue a measurement approach to demonstrate the efficacy of a learning intervention. Researchers, steeped in the belief system that positions randomized controlled trials as the ultimate form of inquiry, try to... continue reading
U.S. House of Representative districts are bounded by centuries-old state borders, and redrawn by state legislatures. This has led to constitutional problems, and overcoming the problem of gerrymandering has not gone away. I propose a... continue reading
The rate of accretion onto the Milky Way (MW) by an individual cloud (or satellite) can be written as dM/dt = M v / R, where M is the cloud mass, v the cloud velocity toward the MW, and R is the distance from the cloud to the MW. Over the time t =... continue reading
Over the decades, the airline industry which was already very safe, has made further strides to improve safety. The current trend in patient safety and simulation conferences is to repeatedly draw parallel conclusions, decrying those in healthcare... continue reading
The Gaia space telescope is currently measuring parallax distances for Galactic stars with ~1% precision out to ~1kpc. This will be a revolutionary data set, but order-of-magnitude improvements are possible with... continue reading
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