Thursday, August 14, 2014

Allergy in adults

Bisphenol A is found in cans, tin cans and a host of other food containers. Sometimes it can be mixed with food and be ingested. Once in the body, it mimics the effects of estrogen, which deregulates the sex hormone levels in men and promotes the development of breast cancer in women. Among others. © Retska, StockFreeImages.com

Allergy in adults
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Both groups were then fed ovalbumin. Result: an adult, or 45 days after gestation, the protein contained in egg white triggered inflammation of the colon only in exposed animals, demonstrating a food intolerance.

These results support the recent decisions taken by the French authorities. Which divided by 10 the value of toxicological threshold compared to that in effect prior to 2013 the use of BPA in food containers for infants was banned last year. And endocrine disruptor should also disappear from the composition of all food packaging from 2015.

Bisphenol A is responsible for food intolerances

Bisphenol A is responsible for food intolerances

The observation of rats exposed to bisphenol A (BPA) in utero showed a risk of food reactions in the fetus and infant. Pioneer in this field, this study was conducted by researchers at INRA Toulouse Midi-Pyrénées. Which reminder to ban BPA in plastics next generation.

On 08/06/2014 at 13:36 - By Destination Santé

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Known for its deleterious effects on the immune system of humans, bisphenol A would also cause food allergies.  © Phovoir

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A total of 10 French 2 are affected by an intolerance or allergy food. Triggered in part under the influence of the environment, they are also favored by everyday exposure to disruptive endocrine . A team of researchers at INRA Toulouse Midi Pyrénées (food Toxicological Toxalim Unit) has indeed prove that perinatal exposure to BPA increases the risk of food intolerance in adulthood. "Even at very low doses This endocrine disruptor contained in plastic is toxic, especially among vulnerable bodies of fetuses and infants, " the authors explain.

To demonstrate this, the researchers compared the immunity and food safety of two cohorts of rats in gestation . The first group received a daily oral dose of BPA, 5 mg / kg body weight from gestation through weaning of newborns to 21 days. The rats of the second group were not exposed to BPA.

Virtual dives with Google Maps

Virtual dives with Google Maps

In partnership with Google , members of the Catlin Seaview Survey are currently conducting a Google Street View of coral reefs that can dive into the world of silence Cousteau as never before. Many virtual dives can already be realized with Google Maps and great videos can be found on YouTube. In some of them, Professor Ove Hoegh-Guldberg and marine biologist Richard Fitzpatrick tell us simply and very specifically what are the coral reefs and make us get to know some of their inhabitants.

This video was also taken during a campaign on the Great Barrier Reef in Australia. It was conducted with a GoPro camera. © Catlin Seaview Survey, YouTube

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During their working members Catlin Seaview Survey also sometimes encounter animals such as whale sharks, giant stingrays and of course the dolphins. This allowed them to achieve the two extraordinary videos above in the Great Barrier Reef in 2012, on the occasion of the first observation campaign Catlin Seaview Survey . Nostalgic for Big Blue by Luc Besson and adventures of the Calypso can not be seduced.

Follow the adventures of Catlin Seaview Survey on Google+ , Twitter and Facebook.

Video: diving with the dolphins through the Catlin Seaview Survey

Video: diving with the dolphins through the Catlin Seaview Survey

Jacques Mayol and Jacques-Yves Cousteau made us dream but nothing can replace a real dive in the Big Blue. When one is lacking and it is not possible to escape the Red Sea or the Coral Triangle, we can get some fresh air with a virtual dive thanks to members of the Catlin Seaview Survey. One can even get to the heart of a group of dolphins ...

On 08/06/2014 at 11:24 - By Laurent Sacco, Futura-Sciences

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One member of the Catlin Seaview Survey with SVII, the camera shooting specially designed for the realization of 3D panoramas of the Google Street View of the sea.  © Catlin Seaview Survey, Underwater Earth

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As explained one of the largest coral specialists, Professor Ove Hoegh-Guldberg, the future of hundreds of millions of people are threatened in the short term if nothing is done to preserve coral reefs . For this, two actions are being carried out by members of the Catlin Seaview Survey . The first is the creation of a huge database consisting largely of images taken around the world and that will serve as benchmarks to monitor coral reefs in response to climate change and the human. activity The second is the use of these images to sensitize the general public to encourage governments to take the decisions necessary for the protection of World Heritage submarine posed by these reefs.

These beautiful images were taken in 2012 at Myrmidon Reef, one of the reefs of the Great Barrier Reef in Australia. © Catlin Seaview Survey , YouTube

Saturday, August 2, 2014

LOOK kangaroos move the study:

According to their results recently published in the journal Royal Society Biology Letters , red kangaroos, when traveling at low speed, especially for their food (that is to say, most of the time), still retain not two but three ground support. To walk, they pose as alternately their front paws and tails and their two hind legs and tail. And in both cases, that is the tail end which provides the main pulse, so that the front legs, they do serve as support virtually.

LOOK kangaroos move the study:
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"Kangaroos use their tails for support, propel and fuel their movement. Actually, they perform more mechanical work with it than we do with our legs," said Maxwell Donelan, University of Colorado Boulder ( United States ), one of the authors of the study. "Their tail has over twenty vertebrae that act as our feet, our calves and our thighs," he adds. Something to inspire the engineers who try to mimic nature to create ever more powerful robots. But the most extraordinary in all this, it may be that before their tail function takes fifth leg to current kangaroos scientists believe that the tail of their ancestors was prehensile and allowed them to cling to trees , as a third hand! Fascinating are the paths of evolution ...

It's official, kangaroos have 5 legs!

It's official, kangaroos have 5 legs!
The Point.fr - Published 07/09/2014 at 07:12
VIDEO. A team of biologists has discovered that the tail marsupial mascot Australia played a major role in locomotion. Explanations.

Kangaroos use their tails as a fifth leg, just as a crutch.
Kangaroos use their tails as a fifth leg, just as a crutch. © CHRISTIAN PUYGRENIER / puy / AFP
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Highlights of Point.fr

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In your opinion, how a kangaroo he paws? Four, what a question! Well, not so sure ... A team of American, Canadian and Australian researchers has just realizing that he has technically five. Two long hind legs, two short front legs and a tail that they use as a leg, sometimes to rest, sometimes for propulsion. For years, scientists have noted that these animals used their strong tail as a crutch during their slow steps and as balance when their bonds. But the role of this body in the locomotion of marsupial emblem of Australia , was still largely underestimated. It is by walk five red kangaroos, the most impressive Australian species on treadmills with sensors that biologists have made ​​the astonishing discovery.

Mount Fuji, a volcano under pressure

Mount Fuji, a volcano under pressure
The Point.fr - Published 07/07/2014 at 15:46
After the earthquake off the coast of Fukushima, a Franco-Japanese study estimated that the mountain emblem of Japan, is in critical condition.

The last eruption of Mount Fuji goes back to 1707.
The last eruption of Mount Fuji goes back to 1707. © Kotaro Yokoyama / The Yomiuri Shimbun

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Highlights of Point.fr

The bowels of Mount Fuji, located south-west of Tokyo, were largely under pressure during the earthquake off the coast of Japan on March 11, 2011 This is what reveals a Franco-Japanese study published Friday in the journal Science and relayed in the columns of the World . "Our work does not say that the volcano will erupt. But they show that he is in critical condition," said Florent Brenguier, study co-author and researcher at the Institute of Earth Sciences, was quoted as saying in the evening.

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Last eruption in 1707

Deductions scientists come from a thorough analysis of data collected by 800 seismic sensors of the country, the densest network in the world. As a result, the waves propagated in the magnitude 9 earthquake damaged the Earth's crust in the volcanic regions of Japan , in particular that of Mount Fuji, yet located 500 km from the epicenter.

Mount Fuji, always closely monitored by the scientific community, "is now in a state of pressure as it has potential for significant eruption. Risk is clearly increased," said the scientist. The last eruption of magnitude since the early eighteenthcentury, when the country was much less populated. The only Tokyo megalopolis now has 34 million inhabitants.