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sdsichero
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Re: Science News

Postby sdsichero » Tue Nov 19, 2013 7:39 pm

Huh.

Mystery humans spiced up ancients’ rampant sex lives

New genome sequences from two extinct human relatives suggest that these ‘archaic’ groups bred with humans and with each other more extensively than was previously known.

The ancient genomes, one from a Neanderthal and one from a different archaic human group, the Denisovans, were presented on 18 November at a meeting at the Royal Society in London. They suggest that interbreeding went on between the members of several ancient human-like groups living in Europe and Asia more than 30,000 years ago, including an as-yet unknown human ancestor from Asia.

“What it begins to suggest is that we’re looking at a ‘Lord of the Rings’-type world — that there were many hominid populations,” says Mark Thomas, an evolutionary geneticist at University College London who was at the meeting but was not involved in the work.
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Re: Science News

Postby The Old Doctor » Tue Nov 19, 2013 7:45 pm



I KNEW IT! YOU ASIANS ARE ALL DWARVES AND ORCS!!! :P
"Why are you pointing your screwdrivers like that? They're scientific instruments, not water pistols."
"Oh, the pointing again! They're screwdrivers! What are you going to do? Assemble a cabinet at them?"
"Are you capable of speaking without flapping your hands about?"
""Timey" what? "Timey wimey"?"

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IvCNuB4 wrote:The Old Doctor is Cat-Scratch ?
Well that explains a lot :lol:

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Re: Science News

Postby sdsichero » Tue Nov 19, 2013 7:47 pm

Cat-Scratch wrote:
I KNEW IT! YOU ASIANS ARE ALL DWARVES AND ORCS!!! :P


And you are from the furries clan. Still around today.
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Re: Science News

Postby The Old Doctor » Tue Nov 19, 2013 7:50 pm

sdsichero wrote:
And you are from the furries clan. Still around today.


No I'm not.

I'm from the human and elves stalk with some hobbit.

So I'm some sort other sort of strange. Seriously, go watch some Monty Python and Dave Allen. Those are my people.
"Why are you pointing your screwdrivers like that? They're scientific instruments, not water pistols."
"Oh, the pointing again! They're screwdrivers! What are you going to do? Assemble a cabinet at them?"
"Are you capable of speaking without flapping your hands about?"
""Timey" what? "Timey wimey"?"

Image
IvCNuB4 wrote:The Old Doctor is Cat-Scratch ?
Well that explains a lot :lol:

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Re: Science News

Postby sdsichero » Mon Nov 25, 2013 7:40 pm

A far cry from terraforming...

NASA Plans to Grow First Plants on the Moon

The U.S. may not have plans to return astronauts to the moon anytime soon, but that doesn’t mean other lifeforms won’t grace the lunar surface. NASA is teaming up with students and private space companies to grow the first plants on the moon’s surface starting in 2015.

The self-contained Lunar Plant Growth Habitat will resemble a glorified coffee can and will contain enough water, nutrients and air to grow 10 turnip seeds, 10 basil seeds, and 100 arabidopsis seeds (this plant is the lab-rat of the botany world).
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Re: Science News

Postby Strict31 » Mon Nov 25, 2013 7:53 pm

sdsichero wrote:A far cry from terraforming...

NASA Plans to Grow First Plants on the Moon



It's nearly 240,000 miles away from any law enforcement agency, and nobody thought to grow some pot on the moon?

Nice job, humans.
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"You must be proud, bold, pleasant, resolute,
And now and then stab, as occasion serves."


Edward II: Act 2 Scene 1, by Christopher Marlowe

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Re: Science News

Postby sdsichero » Tue Nov 26, 2013 4:50 pm

http://www.wired.com/wiredscience/2013/01/space-photo-of-the-day-2/?pid=15081

Mach 1000 Shockwave

When a star explodes as a supernova, it shines brightly for a few weeks or months before fading away. Yet the material blasted outward from the explosion still glows hundreds or thousands of years later, forming a picturesque supernova remnant. What powers such long-lived brilliance? In the case of Tycho's supernova remnant, astronomers have discovered that a reverse shock wave racing inward at Mach 1000 (1000 times the speed of sound) is heating the remnant and causing it to emit X-ray light.

"We wouldn't be able to study ancient supernova remnants without a reverse shock to light them up," says Hiroya Yamaguchi, who conducted this research at the Harvard-Smithsonian Center for Astrophysics (CfA). Tycho's supernova was witnessed by astronomer Tycho Brahe in 1572. The appearance of this "new star" stunned those who thought the heavens were constant and unchanging. At its brightest, the supernova rivaled Venus before fading from sight a year later.


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Re: Science News

Postby sdsichero » Wed Nov 27, 2013 12:06 am

Polymer Gel, Heal Thyself: Engineering Team Proposes New Composites That Can Regenerate When Damaged

Nov. 26, 2013 — When a chair leg breaks or a cell phone shatters, either must be repaired or replaced. But what if these materials could be programmed to regenerate-themselves, replenishing the damaged or missing components, and thereby extend their lifetime and reduce the need for costly repairs?



"When we looked at the biological processes behind tissue regeneration in amphibians, we considered how we would replicate that dynamic cascade within a synthetic material," Dr. Balazs said. "We needed to develop a system that first would sense the removal of material and initiate regrowth, then propagate that growth until the material reached the desired size and then, self-terminate the process."

"Our biggest challenge was to address the transport issue within a synthetic material," Dr. Balazs said. "Biological organisms have circulatory systems to achieve mass transport of materials like blood cells, nutrients and genetic material. Synthetic materials don't inherently possess such a system, so we needed something that acted like a sensor to initiate and control the process."

The team developed a hybrid material of nanorods embedded in a polymer gel, which is surrounded by a solution containing monomers and cross-linkers (molecules that link one polymer chain to another) in order to replicate the dynamic cascade. When part of the gel is severed, the nanorods near the cut act as sensors and migrate to the new interface. The functionalized chains or "skirts" on one end of these nanorods keeps them localized at the interface and the sites (or "initiators") along the rod's surface trigger a polymerization reaction with the monomer and cross-linkers in the outer solution. Drs. Yong and Kuksenok developed the computational models, and thereby established guidelines to control the process so that the new gel behaves and appears like the gel it replaced, and to terminate the reaction so that the material would not grow out of control.
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Re: Science News

Postby sdsichero » Mon Dec 02, 2013 12:39 pm

Strange Fungi Now Stalk Healthy People

Fungi have long plagued plants—famously felling the towering elm and chestnut trees of the eastern U.S. and beyond. More recently, fungal epidemics have become alarmingly common among animals. From ponds in South America where frogs' fungus-clogged skin stops their heart to caves in the eastern U.S. where moldy, shivering bats drop pitifully from the ceiling, pathogenic fungi are running amok. Historically the fungi that infect humans have been known more for inspiring laughably bad commercials about trifling but irritating skin infections than for making people desperately ill. Our formidable immune system and torrid body temperature, too high for most fungi to tolerate, ensured that people in good health generally shook off serious attacks.


C. gattii is different. Until it emerged on Vancouver Island, it had occasionally sickened healthy people elsewhere but had never before caused an outbreak—a burst of unexpected infections. Its appearance in Canada seemingly also marked a jump into new territory with a much cooler climate, where the microorganism had inexplicably become more harmful. Between the outbreak's start and the end of 2012, 337 British Columbians were reported infected, of which two thirds were Vancouver Island residents, says Eleni Galanis, an epidemiologist at the British Columbia Center for Disease Control. And by 2005 C. gattii had started making people sick farther south, in the U.S. Pacific Northwest. Since then, at least 100 people in that area have been infected, and 25 to 30 percent of them have died. “It's a fairly high mortality rate for an environmentally acquired fungus,” says Joseph Heitman, director of the Center for Microbial Pathogenesis at Duke University. For the most part, although these are not AIDS patients, about half had weakened immune systems from prescribed drugs or illness, and many of the rest had common ailments that can weaken immune systems to a lesser extent, such as diabetes, or lung, kidney or heart disease. But 20 percent or more were healthy prior to infection. “Many of these patients were completely healthy, spending a lot of time outdoors, and suddenly they were very ill,” Heitman adds.
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Re: Science News

Postby achilles » Mon Dec 02, 2013 1:02 pm



The moral of the story is stay away from Canada, it's dangerous.
Achilles is the kind of evil that hollows out a volcano for a lair, and sends killer robots after his enemies.---Lord Simian

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Re: Science News

Postby achilles » Mon Dec 02, 2013 1:03 pm

Cat-Scratch wrote:
No I'm not.

I'm from the human and elves stalk with some hobbit.

So I'm some sort other sort of strange. Seriously, go watch some Monty Python and Dave Allen. Those are my people.


You lower types. I'm from Valar stock.
Achilles is the kind of evil that hollows out a volcano for a lair, and sends killer robots after his enemies.---Lord Simian

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Re: Science News

Postby sdsichero » Wed Dec 04, 2013 12:22 pm

Looks like the space station is part TIE Fighter....

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Re: Science News

Postby sdsichero » Fri Dec 06, 2013 3:34 pm

Gut Microbes Linked to Autismlike Symptoms in Mice

Gut feeling. Scientists think this common microbe, Bacteroides fragilis, could help restore normal behavior in autism-mimicking mice.

Many physicians and parents report that their autistic children have unusually severe gastrointestinal problems, such as chronic constipation or diarrhea. These observations have led some researchers to speculate that an ailing gut contributes to the disorder in some cases, but scientific data has been lacking. Now, a provocative study claims that a probiotic treatment for gastrointestinal issues can reduce autismlike symptoms in mice and suggests that this treatment could work for humans, too.
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Re: Science News

Postby sdsichero » Wed Dec 11, 2013 6:27 pm

Scientists Discover a Jewel at the Heart of Quantum Physics

Physicists reported this week the discovery of a jewel-like geometric object that dramatically simplifies calculations of particle interactions and challenges the notion that space and time are fundamental components of reality.

“This is completely new and very much simpler than anything that has been done before,” said Andrew Hodges, a mathematical physicist at Oxford University who has been following the work.

The revelation that particle interactions, the most basic events in nature, may be consequences of geometry significantly advances a decades-long effort to reformulate quantum field theory, the body of laws describing elementary particles and their interactions. Interactions that were previously calculated with mathematical formulas thousands of terms long can now be described by computing the volume of the corresponding jewel-like “amplituhedron,” which yields an equivalent one-term expression.

“The degree of efficiency is mind-boggling,” said Jacob Bourjaily, a theoretical physicist at Harvard University and an author of the first of two papers detailing the new idea. “You can easily do, on paper, computations that were infeasible even with a computer before.”

The new geometric version of quantum field theory could also facilitate the search for a theory of quantum gravity that would seamlessly connect the large- and small-scale pictures of the universe. Attempts thus far to incorporate gravity into the laws of physics at the quantum scale have run up against nonsensical infinities and deep paradoxes. The amplituhedron, or a similar geometric object, could help by removing two deeply rooted principles of physics: locality and unitarity.
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Re: Science News

Postby habitual » Wed Dec 11, 2013 6:36 pm

M'Kraan Crystal?

Hab

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