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Chris Fisher

Faster-than-light neutrino result reportedly a mistake caused by loose cable - 0 views

arstechnica.com/...mistake-due-to-loose-cable.ars

neutrino ftl mistake

shared by Chris Fisher on 22 Feb 12 - No Cached
  • a loose fiber optic cable was causing one of the atomic clocks used to time the neutrinos' flight to produce spurious results.
  • If the report is confirmed (right now, there's only one source), then it provides a simple explanation for the fascinating-yet-difficult-to-accept results.
Mars Base

The Bloom Isn't Off This Ancient Plant - Science News - 0 views

www.sciencenews.org/...om_isnt_off_this_ancient_plant

scibyte35

shared by Mars Base on 22 Feb 12 - No Cached
  • A flower that last bloomed while mammoths walked the Earth has been reborn
  • died just before the paper was released
  • radiocarbon-dated to about 31,800 years ago
Mars Base

Scientists discover molecular secrets of 2,000-year-old Chinese herbal remedy - 0 views

www.physorg.com/...-secrets-year-old-chinese.html

scibyte34 remedy

shared by Mars Base on 18 Feb 12 - No Cached
  • For roughly two thousand years, Chinese herbalists have treated Malaria using a root extract, commonly known as Chang Shan
  • Now, researchers from the Harvard School of Dental Medicine have discovered the molecular secrets behind this herbal extract's power.
  • recent studies suggest that halofuginone, a compound derived from this extract's bioactive ingredient, could be used to treat many autoimmune disorders
  • ...13 more annotations...
  • halofuginone (HF) triggers a stress-response pathway that blocks the development of a harmful class of immune cells
  • prevents the autoimmune response without dampening immunity altogether
  • This compound could inspire novel therapeutic approaches to a variety of autoimmune disorders."
  • exciting example of how solving the molecular mechanism of traditional herbal medicine can lead both to new insights into physiological regulation and to novel approaches to the treatment of disease
  • Prior research had shown that HF reduced scarring in tissue, scleroderma (a tightening of the skin), multiple sclerosis, scar formation and even cancer progression.
  • Recognized only since 2006, Th17 cells are "bad actors," implicated in many autoimmune diseases such as inflammatory bowel disease, rheumatoid arthritis, multiple sclerosis and psoriasis
  • minute doses of HF reduced multiple sclerosis in a mouse model
  • Further analysis showed that HF was somehow turning on genes involved in a newly discovered pathway called the amino acid response pathway, or AAR
  • evidence that it extends lifespan and delays age-related inflammatory diseases in animal studies on caloric restriction
  • during a power outage we conserve what little juice we have left on our devices, foregoing chats in favor of emergency calls," said Whitman. "Cells use similar logic
  • Researchers do not yet fully understand the role that amino acid limitation plays in
  • researchers were able to home in on a single amino acid, called proline, and discovered that HF targeted and inhibited a particular enzyme (tRNA synthetase EPRS) responsible for incorporating proline into proteins that normally contain it.
  • proline also reversed other therapeutic effects of HF, inhibiting its effectiveness against the malaria parasite as well as certain cellular processes linked to tissue scarring
Mars Base

Aurora Oddity: Northern Lights Flare Up Without Big Sun Eruption | Space.com - 0 views

www.space.com/e-northern-lights-display.html

scibyte34 aurora ymhs

shared by Mars Base on 18 Feb 12 - No Cached
  • Northern Lights Display Dazzles Without Big Sun Flare
  • reasons scientists can't yet explain, the northern lights blazed up in a dazzling display this week
  • despite the apparent lack of a major solar flare typically associated with these celestial light shows
  • ...13 more annotations...
  • began on Valentine's Day (Feb. 14),
  • uptick in activity in Earth's magnetic field sparked a geomagnetic storm
  • Sometimes the sky surprises us
  • with little warning, geomagnetic activity rippled around the Arctic Circle
  • producing an outbreak of auroras
  • among the best in months
  • some early speculation that a Feb. 10 sun storm, known as a coronal mass ejection (CME), may have triggered the northern lights show, but this solar outburst has not yet been confirmed.
  • occur when charged particles from the sun interact with Earth's upper atmosphere
  • creating ripples of glowing light
  • charged particles are funneled to Earth's poles by the planet's magnetic field
  • typically only visible to skywatchers in far northern or far southern latitudes
  • northern lights are called the aurora borealis
  • southern lights are dubbed the aurora australis
Mars Base

Cleaning up Earth's orbit: A Swiss satellite to tackle space debris - 0 views

actu.epfl.ch/...orbit-a-swiss-satellite-to-tac

scibyte34 satellite debris

shared by Mars Base on 17 Feb 12 - No Cached
  • Mars Base on 17 Feb 12
     
    Swiss satellite to tackle space debris
Mars Base

Swiss satellite to tackle space debris (w/ video) - 0 views

www.physorg.com/...llite-tackle-space-debris.html

scibyte34 satellite debris

shared by Mars Base on 17 Feb 12 - No Cached
  • Swiss Space Center at EPFL is announcing today the launch of CleanSpace One, a project to develop and build the first installment of a family of satellites specially designed to clean up space debris.
  • NASA keeps close tabs on at least 16,000 of these objects that are larger than 10 cm in diameter
  • After its launch, the cleanup satellite will have to adjust its trajectory in order to match its target’s orbital plane
  • ...1 more annotation...
  • When it gets within range of its target, which will be traveling at 28,000 km/h at an altitude of 630-750 km
Mars Base

Fruit flies use alcohol as a drug to kill parasites - 0 views

www.physorg.com/...es-alcohol-drug-parasites.html

scibyte34 alcohol

shared by Mars Base on 17 Feb 12 - No Cached
  • February 16, 2012
  • according to a study published online on Feb. 16 in Current Biology
  • fruit flies will actually seek out alcohol to kill off blood-borne parasitic wasps living within them
  • ...5 more annotations...
  • consume alcohol to self-medicate, a behavior that greatly increases their survival rate
  • believe our results are the first to show that alcohol consumption can have a protective effect against infectious disease, and in particular against blood-borne parasites
  • the common fruit fly that swirls around browning bananas in your kitchen
  • The amount of alcohol in their natural habitat can range from 5 to 15 percent
  • fruit flies are really good at detoxifying alcohol."
Mars Base

NASA Wants Gas Stations In Space | NASA Contracts for Cryogenic Rocket Fuel Studies | F... - 0 views

www.space.com/ace-gas-station-contracts.html

scibyte34 satellite

shared by Mars Base on 17 Feb 12 - No Cached
  • 05 August 2011
  • NASA has awarded contracts to four companies with plans to study how to store and transfer fuel in space.
  • Rocket fuel is cryogenic, meaning super-cold substances like liquid oxygen and liquid hydrogen. If not kept extremely chilled and protected, some of those liquids tend to boil off into gases.
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