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The end of heartless b*tches
This realistic 3D-printed silicon heart could help people in need of heart transplants when there are not enough donors.
A tiny layer of graphene flakes becomes a deadly weapon and kills bacteria, stopping infections during procedures such as implant surgery
A tiny layer of graphene flakes becomes a deadly weapon and kills bacteria, stopping infections during procedures such as implant surgery. This is the findings of new research from Chalmers University of Technology, Sweden, recently published in the scientific journal Advanced Materials Interfaces.
Operations for surgical implants, such as hip and knee replacements or dental implants, have increased in recent years. However, in such procedures, there is always a risk of bacterial infection. In the worst case scenario, this can cause the implant to not attach to the skeleton, meaning it must be removed.
Bacteria travel around in fluids, such as blood, looking for a surface to cling on to. Once in place, they start to grow and propagate, forming a protective layer, known as a biofilm.
A research team at Chalmers has now shown that a layer of vertical graphene flakes forms a protective surface that makes it impossible for bacteria to attach. Instead, bacteria are sliced apart by the sharp graphene flakes and killed. Coating implants with a layer of graphene flakes can therefore help protect the patient against infection, eliminate the need for antibiotic treatment, and reduce the risk of implant rejection. The osseointegration – the process by which the bone structure grow to attach the implant – is not disturbed. In fact, the graphene has been shown to benefit the bone cells.
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Food for thought
We might won`t need a last supper yet
What doesn't tear you makes you doper
Substitutional defects ( 2 ) are point defects in which an impurity atom takes the place of a native atom within the crystal lattice. Semiconductors often intentionally add substitional defects through doping, such as adding boron or phosphorous to silicon to create an n- or p-type semiconductor, and certain alloys include extraneous elements to create substitional defects for solution hardening purposes.
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Flame Nebula in Orion - For more images of the cosmos Click Here
Panorama of Jupiter
Jupiter seen by NASA’s Voyager spacecraft
Animation taken from video: Jeff Quitney
Lego’s new “Women of NASA” set is now available, and the product has already risen to the top of Amazon’s list of best-selling toys.
The set of 231 plastic pieces costs about $25 and went on sale Wednesday morning. Its instant popularity is not surprising to those who have been following Lego’s laudable — and presumably profitable — trend of selling toys that are more inclusive of women.
“Women of NASA” features four mini figurines of pioneering women from the space agency: the astronauts Sally Ride and Mae Jemison, the astronomer Nancy Grace Roman, and the computer scientist Margaret Hamilton.
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Thats amazing news :O