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Posted by bio_man   September 10, 2018   929 views

The coconut crab (Birgus latro) is a species of terrestrial hermit crabs that's known for the largest land-living arthropod in the world, weighing up to 4.1 kg (9.0 lb). It is found on islands across the Indian Ocean and parts of the Pacific Ocean, mirroring the distribution of the coconut palm. Like other hermit crabs, juvenile coconut crabs use empty gastropod shells for protection, but the adults develop a tough exoskeleton on their abdomen and stop carrying a shell.

Coconut crabs have evolved organs known as branchiostegal lungs, which are used instead of the vestigial gills for breathing. They cannot swim, and will drown if immersed in water for long. They have also developed an acute sense of smell, which has evolved convergently with [ ... ]

Hermit Crabs Islands Coconut crab Robber crab Palm thief
Posted in Interesting Facts
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Posted by bio_man   September 4, 2018   785 views

A fire which broke out on Sunday evening at the National Museum of Brazil in Rio de Janeiro has ravaged some of the country’s most important scientific collections. Nearly 20 million items are now irreparably destroyed by what was started by either an electrical short-circuit due to budget cuts or a homemade paper hot-air balloon that may have landed on the roof, said Brazil's Culture Minister Sergio Leitao.

Having been founded before Brazil’s independence from Portugal 200 years ago (1808), the museum housed ancient Egypt, Greek, and Roman artifacts and important paleontology and natural history collections, including one of Latin America’s oldest human fossils: the 11,500-year-old skull called Luzia (shown below). The Luzia skull was colle [ ... ]

Museum Brazil
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Face with Open Mouth
Posted on Sep 7, 2018 by cloveb
Posted by bio_man   August 1, 2018   1374 views

According to a recent study published in the medical journal, Radiology, it was found that among amateur players who headed a similar number of balls, women had more signs of microscopic damage in their brains’ white matter than men.

From 2013 to 2016, 49 men and 49 women from amateur teams were subjects to a study that compared male and female players who headed the ball a similar number of times over the past year. For men, that median estimate was 487 headers. Women had an estimated median of 469 headers.

Using a special MRI technique known as diffusion tensor imaging, researchers identified brain regions with changes in white matter in both sexes, but that more women that men had spots that showed signs of microscopic damage.

In some ca [ ... ]

Head injuries Athletes Brain Sports Football Soccer
Posted in Research
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Posted by bio_man   June 10, 2018   1983 views

The maned wolf (Chrysocyon brachyurus) is the largest canid found in the grasslands of southern Brazil. Its markings resemble those of foxes and wolves, yet it's neither related to wolves nor foxes despite its appearance and name, but is actually closer to dogs. And, unlike other large canids, the maned wolf does not form packs. It hunts alone, usually between sundown and midnight, and kills its prey by biting on the neck or back. Interestingly, a large fraction of its diet (over 50%, according to some studies) consists of vegetable matter, including sugarcane, tubers, and fruit; this is unusual for canids.

The maned wolf is generally shy and flees when alarmed by humans, and it poses little direct threat to humans. Luckily, the animal is w [ ... ]

wolves dogs foxes canid Brazil
Posted in Interesting Facts
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Posted by bio_man   May 16, 2018   2425 views

Want to reconstruct your face in 3D from a single 2D image? Now you can.

According to its creators, this technology does not require accurate alignment nor establishes dense correspondence between images; it works for arbitrary facial poses and expressions, and can be used to reconstruct the whole 3D facial geometry (including the non-visible parts of the face) bypassing the construction and fitting of a 3D Morphable Model. This is achieved via a simple convolutional neural network architecture that performs direct regression of a volumetric representation of the 3D facial geometry from a single 2D image.

Try it out

[ ... ]

Technology 3D facial recognition
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