#149059 - 12/28/07 01:16 AM
Re: The Daily Science Nugget...
[Re: D. Allan]
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Panning for gold
Registered: 08/28/00
Posts: 3883
Loc: les Etats-Unis d'Amerique
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William A. Whitelaw, a professor in the department of medicine at the University of Calgary, explains what happens during a hiccup:
"A hiccup is not simply a twitch of the diaphragm but a complex motor act. During one, the diaphragm and the complete set of inspiratory muscles (intercostal muscles, neck muscles and others) make a sudden, very strong, contraction. The expiratory muscles are also strongly inhibited. Just after the contraction begins, the glottis (commonly called the vocal cords) clamp shut, making the "hic" sound. Before the diaphragm contracts, the roof of the mouth moves up, as does the back of the tongue, and there is often an associated burp. The heart slows a bit as well. In addition, hiccups are seldom isolated events but tend to recur every few seconds, sometimes for hours." - sciam.com
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#149388 - 12/29/07 12:14 PM
Re: The Daily Science Nugget...
[Re: D. Allan]
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Registered: 03/24/00
Posts: 955
Loc: Lancaster,MA,USA
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Who knew!! Very interesting, never would have thought that,
pkrause
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#149444 - 12/29/07 10:10 PM
Re: The Daily Science Nugget...
[Re: pkrause]
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Panning for gold
Registered: 08/28/00
Posts: 3883
Loc: les Etats-Unis d'Amerique
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Me either, pk. And I never guessed babies were hardwired to make social judgements. Look at this: Your Baby is Watching (and Judging) YouBy Meredith F. Small, LiveScience's Human Nature Columnist posted: 28 December 2007 01:16 pm ET "Next time the baby shoots you a dirty look, it might not be gas. Instead, the baby might be really disgusted by your behavior. ... " more at: http://www.livescience.com/history/071228-hn-babies.html
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#150057 - 01/02/08 05:29 PM
Re: The Daily Science Nugget...
[Re: D. Allan]
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Panning for gold
Registered: 08/28/00
Posts: 3883
Loc: les Etats-Unis d'Amerique
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Mind-Bending Therapies The drugs that put the “psychedelic” into the sixties are now the subject of renewed research interest because of their therapeutic potential. Psychedelics such as LSD and the compound in magic mushrooms could ease a variety of difficult-to-treat mental illnesses, such as chronic depression, post-traumatic stress disorder, and drug or alcohol dependency. Clinical trials with various substances are now under way in humans. more: http://www.sciam.com/article.cfm?id=psychedelic-healing
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#150435 - 01/04/08 10:57 PM
Re: The Daily Science Nugget...
[Re: D. Allan]
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Panning for gold
Registered: 08/28/00
Posts: 3883
Loc: les Etats-Unis d'Amerique
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Why Do Drops of Liquid Form Spheres in Space? January 4, 2008 Whether water sits in a lake or a glass of water, Earth’s gravity pulls the liquid downward into the shape of the container it’s in. But in space, gravity’s effects are different. Objects in orbit are indeed affected by gravity, but they are in freefall, moving constantly sideways while falling toward Earth. This renders them effectively weightless. Up there, surface tension shapes water into spheres. Magnetic-like molecules on water’s surface cause the surface to behave like an elastic skin. Each molecule is pulled with equal tension by its neighbors. The tight-knit group forms the smallest possible area—a sphere. - Corey Binns at: http://www.livescience.com/mysteries/080104-llm-space-spheres.html
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