There’s a nice, but dense, paper out today (pdf here) from Singaporean biophysicists and chemical engineers at MIT demonstrating how existing theory fails to model the tying and untying of knots in polymers.
Such knots are found in nature’s macromolecules: proteins and DNA. The most probable knot size (the ’metastable’ size) was found to vary non-monotonically (‘not strictly increasing’) with channel size, as per existing (Grosberg-Rabin) theory.
“O, promised landO, wicked groundBuild a dreamTear it downO, promised landWhat a wicked groundBuild a dreamWatch it all fall down”“San Andreas Fault” Maybe the first persons to note something unusual in early morning of April 18, 1906 were the sailors on board of the “Wellington“, just entering the bay of San Francisco. The captain reported later that the ship “shivered and shook like a springless wagon on a corduroy road” even if the sea was as
The 1st homo species is supposed to be Homo Habilis – (handy man). Who made these flaked tools? An older homo habilis or some of the more advanced ape-like upright walkers that are not related to Lucy? According to Daily Mail: “World’s oldest tools discovered: Stone flakes made by human ancestor 3.3 million year ago […]
Quick links from the past week in mind and brain news: The latest instalment of ‘the seductive allure of neuroscience’ has been released (aka the force awakens) – a solid study suggest spurious neuroscience adds weight to explanations. Great coverage from the BPS Research Digest. Aeon asks an interesting question: throughout evolutionary history, we never […]
Exciting news for the DSN team! What we do here on this site — our mission and core values — have now been immortalized in the peer-reviewed scientific literature. Yeah, baby! It’s been a long time in the making, but we’re so happy to announce the publication of “Ten Simple Rules for Effective Online Outreach”, a new […]