9/20/2011
9/19/2011
"The weapon is still in alignment..."
lol
Make Ready with Bill Rogers: Reactive Pistol Shooting
It's Funny because it's well done...but it's also the camera angels...
Make Ready with Bill Rogers: Reactive Pistol Shooting
It's Funny because it's well done...but it's also the camera angels...
9/18/2011
Artificial blood vessels made on a 3D printer
Artificial blood vessels...
Artificial blood vessels made on a 3D printer may soon be used for transplants of lab-created organs.
Until now, the stumbling block in tissue engineering has been supplying artificial tissue with nutrients that have to arrive via capillary vessels.
A team at the Fraunhofer Institute in Germany has solved that problem using 3D printing and a technique called multiphoton polymerisation.
The findings will be shown at the Biotechnica Fair in Germany in October.
Out of thousands of patients in desperate need of an organ transplant there are inevitably some who do not get it in time.
In Germany, for instance, more than 11,000 people have been put on an organ transplant waiting list in 2011 alone.
To make sure more patients receive these life-saving surgeries, researchers in tissue engineering all over the globe have been working on creating artificial tissue and even entire organs in the lab.
But for a lab-made organ to function, it needs to be equipped with artificial blood vessels - tiny and extremely complex tubes that our organs naturally possess, used to carry nutrients.
Numerous attempts have been made to create synthetic capillaries, and the latest one by the German team seems to be especially promising.
"The individual techniques are already functioning and they are presently working in the test phase; the prototype for the combined system is being built," said Dr Gunter Tovar, who heads the BioRap project at Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB in Stuttgart.
Elastic biomaterials
3D printing technology has been increasingly used in numerous industries, ranging from creating clothes, architectural models and even chocolate treats.
But this time, Dr Tovar's team had a much more challenging printing mission.
To print something as small and complex as a blood vessel, the scientists combined the 3D printing technology with two-photon polymerisation - shining intense laser beams onto the material to stimulate the molecules in a very small focus point.
The material then becomes an elastic solid, allowing the researchers to create highly precise and elastic structures that would be able to interact with a human body's natural tissue.
So that the synthetic tubes do not get rejected by the living organism, their walls are coated with modified biomolecules.
Such biomolecules are also present in the composition of the "inks" used for the blood vessel printer, combined with synthetic polymers.
"We are establishing a basis for applying rapid prototyping to elastic and organic biomaterials," said Dr Tovar.
"The vascular systems illustrate very dramatically what opportunities this technology has to offer, but that's definitely not the only thing possible."
9/15/2011
9/14/2011
9/12/2011
Building Blog "The Shape of War"
ARCHITECTURAL CONJECTURE
URBAN SPECULATION
LANDSCAPE FUTURES
BLDGBLOG ("BUILDING BLOG") IS WRITTEN BY GEOFF MANAUGH. THE OPINIONS EXPRESSED ON BLDGBLOG ARE MY OWN; THEY DO NOT REFLECT THE VIEWS OF MY EDITORS, EMPLOYERS, PUBLISHERS, FRIENDS, OR COLLEAGUES, WITH WHOM THIS BLOG IS NOT AFFILIATED.
"As Norfolk says in the BLDGBLOG interview, and which perhaps serves as a useful conceptual umbrella for the entire forthcoming evening:
"As Norfolk says in the BLDGBLOG interview, and which perhaps serves as a useful conceptual umbrella for the entire forthcoming evening:
All of the work that I’ve been doing over the last five years is about warfare and the way war makes the world we live in. War shapes and designs our society. The landscapes that I look at are created by warfare and conflict. This is particularly true in Europe. I went to the city of Cologne, for instance, and the city of Cologne was built by Charlemagne—but Cologne has the shape that it does today because of the abilities and non-abilities of a Lancaster Bomber. It comes from what a Lancaster can do and what a Lancaster can't do. What it cannot do is fly deep into Germany in the middle of the day and pinpoint-bomb a ball bearing factory. What it can do is fly to places that are quite near to England, that are five miles across, on a bend in the river, under moonlight, and then hit them with large amounts of H.E.. And if you do that, you end up with a city that looks like Cologne—the way the city's shaped.
So I started off in Afghanistan photographing literal battlefields—but I'm trying to stretch that idea of what a battlefield is. Because all the interesting money now—the new money, the exciting stuff—is about entirely new realms of warfare: inside cyberspace, inside parts of the electromagnetic spectrum. Eavesdropping, intelligence, satellite warfare, imaging—this is where all the exciting stuff is going to happen in twenty years' time. So I wanted to stretch that idea of what a battleground could be. What is a landscape—a surface, an environment, a space—created by warfare?"
9/11/2011
9/10/2011
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