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Archive del 14 marzo 2010

sineparole

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Ritmi circadiani

Tutte le attività biologiche dei viventi sono caratterizzate da un andamento ciclico la cui durata è di circa 24 ore.

Immagine anteprima YouTube

polarsleepbear

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  • Alaska frogs reach record lows in extreme temperature survival
    "Alaska wood frogs spend more time freezing and thawing outside than a steak does in your freezer, and the frog comes back to life in the spring in better shape than the steak," said the lead author on a recent paper demonstrating that freeze tolerance in Alaska wood frogs is more extreme than previously thought.
  • Vaccine for dust-mite allergies created
    A vaccine for dust-mite allergies has been created, researchers report. In lab tests and animal trials, the nano-sized vaccine package was readily absorbed by immune cells and dramatically lowered allergic responses. "What is new about this is we have developed a vaccine against dust-mite allergens that hasn't been used before," says a corresp […]
  • Safeguarding Belize's barrier reef with conservation drones
    Seeking to gain a high-tech edge over illegal fishers, the Government of Belize will use “eyes in the sky” to enforce fishing regulations in the biodiverse Glover’s Reef Marine Reserve and other reef systems in what is the first use of conservation drones to monitor marine protected areas.
  • Vulnerability of sharks as collateral damage in commercial fishing shown by study
    A new study that examined the survival rates of 12 different shark species when captured as unintentional bycatch in commercial longline fishing operations found large differences in survival rates across the 12 species, with bigeye thresher, dusky, and scalloped hammerhead being the most vulnerable.
  • Therapeutic bacteria prevent obesity in mice, study finds
    A probiotic that prevents obesity could be on the horizon. Bacteria that produce a therapeutic compound in the gut inhibit weight gain, insulin resistance and other adverse effects of a high-fat diet in mice, investigators have discovered. Regulatory issues must be addressed before moving to human studies, but the findings suggest that it may be possible to […]
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