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wetwareontologies:

Detailed in these two links [link] [link]is the theory underpinning one of the fundamental overlaps between biology and computationalism - the creation of DNA computers.

The pieces are lengthy but they illustrate how the computer science of finite state automata (not to be confused with cellular automata) are being ported into biology. Finite state machines (as they are also known) are simpler Turing machines, but still capable of executing computation. Like the Turing machine - they are concepts, or abstractions, of a notional computing device which exist independent of the material they are instantiated within.

Of most interest is the diagrams which abstract the ‘software’ portion of the system into elements which might be less readily understood as such, like transition molecules and mRNA.

Also of interest, the nomenclature for these entitites - they are variously referred to as ‘computational genes’ or ‘molecular automatons’

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christinetheastrophysicist:

Tetraquark!!
Title: Observation of the resonant character of the Z(4430)− state
Authors: The LHCb collaboration
Yesterday, The LHCb collaboration at CERN reported having found an interesting and exotic particle state. What they have observed is a particle composed of four quarks, a tetraquark. This particle, called Z(4430)-, has a mass of 4430 MeV and holds a negative charge. Through measurements of 4D fits of the decay amplitudes, it is believed that the quarks that Z(4430)- is composed of is a charm, an anti-charm, a down, and an anti-up. At 13.9σ, this could be the first evidence for the existence of particles beyond the quark model.
Image from R. Aaij et al.

christinetheastrophysicist:

Tetraquark!!

Yesterday, The LHCb collaboration at CERN reported having found an interesting and exotic particle state. What they have observed is a particle composed of four quarks, a tetraquark. This particle, called Z(4430)-, has a mass of 4430 MeV and holds a negative charge. Through measurements of 4D fits of the decay amplitudes, it is believed that the quarks that Z(4430)- is composed of is a charm, an anti-charm, a down, and an anti-up. At 13.9σ, this could be the first evidence for the existence of particles beyond the quark model.

Image from R. Aaij et al.

Tags: physics
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skeptv:

Healthy Fish = Healthy People

The health of our communities is interconnected with the health of our planet. This is readily apparent at the Tonle Sap Lake in Cambodia, Southeast Asia’s largest lake and home to more than three million people.

David Emmett, Senior Vice President at Conservation International, takes us to the Tonle Sap lake in Cambodia to explain the importance of fish to the health and sustainability of the local communities.

via Conservation Dot Org.
Twitter: http://www.twitter.com/ConservationOrg
Facebook: https://www.facebook.com/conservation.intl
http://www.conservation.org

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laughingsquid:

The Reason for the Earth’s Seasons as Explained From Space
Tags: physics
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laboratoryequipment:

LabChat: The Future of Research Labs

Spend a few minutes with Michelle Taylor, Editor of Laboratory Equipment, as she explores the future of research laboratories worldwide.

Read more: http://www.laboratoryequipment.com/videos/2014/03/labchat-future-research-labs

(via women-in-science)

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laughingsquid:

Visual Workout Posters Inspired by Popular Movies, TV Shows, and Video Games

People will think about doing the Lannister workout, then shudder when they think about linking themselves in any way to Joffrey.

laughingsquid:

Visual Workout Posters Inspired by Popular Movies, TV Shows, and Video Games

People will think about doing the Lannister workout, then shudder when they think about linking themselves in any way to Joffrey.

Tags: kinesiology
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compoundchem:

The colours & chemistry of some common pH indicators: http://wp.me/p4aPLT-aM
PDF download via the above link, and also available to purchase in large poster form here.

compoundchem:

The colours & chemistry of some common pH indicators: http://wp.me/p4aPLT-aM

PDF download via the above link, and also available to purchase in large poster form here.

Tags: chemistry
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fitzlibrarian:

Tool ≠ Learning Outcome.

Advanced right answer:  after being exposed to a variety of tools, learning to select the most appropriate one to support their goal/task/learning.

fitzlibrarian:

Tool ≠ Learning Outcome.

Advanced right answer:  after being exposed to a variety of tools, learning to select the most appropriate one to support their goal/task/learning.

(Source: twitter.com)

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jtotheizzoe:

Let This Awesome Science Infect Your Mind

Ed Yong is one of the finest science writers in the world. His National Geographic blog is chock full of the weird, wild, and WTF-inducing stories that make our living world so darn interesting. So I was overjoyed when I heard he would be speaking at this year’s TED.

He didn’t disappoint. In his talk above, he unlocks the under-appreciated and often cringe-worthy world of mind-controlling parasites. They get no respect, I tell ya, no respect at all. Yet they are cornerstones of countless ecosystems, determining food availability and managing population sizes like armies of freaky fauna, each deployed in a Trojan Horse of evolution’s design. Every parasite’s life is a story, by definition, an elaborate chain that extends from host to host, and I think they’ve found their minstrel in Ed. I mean that as a compliment, of course.

Listen to him weave a tapestry of tapeworms, explain what makes flamingos munch on zombie shrimp, show you how a cricket is like a TARDIS, how a wasp turns a cockroach into a cocker spaniel, and how a brain-controlling protozoan reminds him of an Elizabeth Gilbert novel. My favorite part of this? The idea that ideas themselves may be parasites.

I haven’t loved a TED talk this much in a long time. Or maybe that’s just the parasite talking. 

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jtotheizzoe:

Watch this liquid boil and freeze at the same time! It’s not magic, these folks just dropped the pressure and temperature to the perfect place to hit the substance’s triple point, that magical nexus on the phase diagram where solid, liquid, and vapor coexist.

The liquid above is almost certainly not pure water (those crystals look a little funny), but here’s water’s phase diagram, complete with triple point and its various ice phases. Yes, even that one.

(via Mental Floss)

Tags: chemistry