Τετάρτη 27 Δεκεμβρίου 2017

ΝΑΤΙΟΝΑL SCIENCE FOUNDATION update..


12/26/2017 12:12 PM EST

Honeybees on a flower
Honeybees on a flower. More about this image In 2012, biologists at the Univrsity of California, (UC), San Diego, published their findings from a study in which they discovered that a small dose of a commonly used crop pesticide turns honeybees into "picky eaters" and affects their ...
This is an NSF Multimedia Gallery item.


12/26/2017 12:12 PM EST

A molecular cage created by designing specialized protein puzzle pieces
A molecular cage created by designing specialized protein puzzle pieces. Every color represents a separate protein, where cylindrical segments indicate rigid parts and ribbon-like segments indicate flexible parts of each protein chain. The grey sphere in the protein cage was placed there to ...
This is an NSF Multimedia Gallery item.


12/26/2017 12:12 PM EST

Working a fossil site in the Liscomb Bone Bed in northern Alaska
Gregory Erickson, a researcher from Florida State University who specializes in the use of bone and tooth histology to interpret the paleobiology of dinosaurs, works a fossil site in the Liscomb Bone Bed in northern Alaska. The bones of Ugrunaaluk kuukpikensis, a newly described species ...
This is an NSF Multimedia Gallery item.

12/26/2017 12:12 PM EST

"Biomineral Single Crystals," by Pupa U.P.A. Gilbert and Christopher E. Killian, UW-Madiso
"Biomineral Single Crystals," by Pupa U.P.A. Gilbert and Christopher E. Killian, University of Wisconsin, Madison. These fantastical structures are the microscopic crystals that make up a sea urchin's tooth. Each shade of blue, aqua, green and purple--superimposed with Photoshop on a ...
This is an NSF Multimedia Gallery item.


12/26/2017 12:12 PM EST

Previously overlooked asymmetry has been found in <em>Arabidopsis</em>
Previously overlooked asymmetry has been found in Arabidopsis and tomato leaves. More about this imageResearch shows that the spiral pattern of leaf formation from the point of growth affects the developing leaf's exposure to the plant hormone auxin. This exposure leads to ...
This is an NSF Multimedia Gallery item.

12/26/2017 12:12 PM EST

The inner regions of a collapsing, rapidly spinning massive star
The inner regions of a collapsing, rapidly spinning massive star. The colors indicate entropy, which roughly corresponds to heat: red regions are very hot, while blue regions are cold. The black arrows indicate the direction of the flow of stellar material. The two white curves with black outlines ...
This is an NSF Multimedia Gallery item.

12/26/2017 12:12 PM EST

First all-atom structure of an HIV virus capsid in its tubular form
From Klaus Schulten's project about HIV infection, this image is of the first all-atom structure of an HIV virus capsid in its tubular form. Schulten and his team at the University of Illinois at Urbana-Champaign are studying the protein capsid that encases the HIV-1 genome. The process through ...
This is an NSF Multimedia Gallery item.

12/26/2017 12:12 PM EST

Balloon the size of a Boeing 747 jumbo jet
In October 2007, the National Center for Atmospheric Research (NCAR) in Boulder, Colorado, and a team of research partners successfully launched a solar telescope to an altitude of 120,000 feet using this balloon, which is larger than a Boeing 747 jumbo jet. The test cleared the way for ...
This is an NSF Multimedia Gallery item.

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