Biophiles D'abord un petit blabla (court, promis) sur ce site... Un site désiré... pourquoi ? Parce que cela faisait longtemps que je voulais le faire, tout proportion gardée... Mais s'il était déjà fortement désiré avant le début de son élaboration, il l'a été d'autant plus pendant sa construction car, n'ayant pas du tout l'âme informaticienne (et encore moins webmestrine) j'en ai un peu, beaucoup, bavé pour le faire ... Partage des connaissances Je suis étudiante en biologie et durant mes années précédentes, j'ai eu l'occasion de me procurer les cours d'années antérieures corrrespondant mots pour mots à ceux que je suivais. Avertissement Je mets à disposition MES notes de cours !! Un autre détail : Assistez aux cours !!
The Biology Corner The Biology Project Science Daily: News & Articles in Science, Health, Environment & Technology Forget Extinct: The Brontosaurus Never Even Existed hide captionApatosaurus (right, opposite a Diplodocus skeleton at the Carnegie Museum of Natural History in Pittsburgh), is what paleontologist Othniel Charles Marsh actually found when he thought he'd discovered the Brontosaurus. Joshua Franzos/Carnegie Museum of Natural History Apatosaurus (right, opposite a Diplodocus skeleton at the Carnegie Museum of Natural History in Pittsburgh), is what paleontologist Othniel Charles Marsh actually found when he thought he'd discovered the Brontosaurus. It may have something to do with all those Brontosaurus burgers everyone's favorite modern stone-age family ate, but when you think of a giant dinosaur with a tiny head and long, swooping tail, the Brontosaurus is probably what you're seeing in your mind. Well hold on: Scientifically speaking, there's no such thing as a Brontosaurus. Even if you knew that, you may not know how the fictional dinosaur came to star in the prehistoric landscape of popular imagination for so long.
Exploring Nature Educational Resource: A Natural Science Resource for Students and Educators Scientists Work To Unravel Mystery Behind Woman Who Doesn’t Grow Twenty year old Brooke Greenberg hasn’t grown since age five. For the last 15 years mystified doctors have been unable to explain the cause for Brooke’s disorder that has kept her aging in check. At age twenty, she maintains the physical and mental appearance of a toddler. Eric Shadt wants to solve this most bizarre of medical mysteries. Because hormones control many of the maturation processes, one of the first things the research team looked at was to see if Brooke’s own hormone levels might be abnormal. The researchers are now are painstakingly analyzing Brooke’s entire genome in search of unique mutations. To find the mutation Shadt and his team are using the latest genome sequencing and analysis tools. Unraveling the genetics that prevent Brooke Greenberg from aging could lead to treatments for Alzeheimer’s disease, cancer, or to slow the process of aging itself. Already the research team has found some unique mutations.
Interactives archive: Biology Anatomy of ChildbirthReview the three stages of having a baby as well as some of the risks women face. Anatomy of the CoelacanthThis survivor from the age of dinosaurs has body parts found in no other living creature. Anatomy of a CrocExamine a Nile crocodile and see what makes this amazing reptile tick. Anatomy of a HiveInvestigate the physical, behavioral, and social infrastructure inside a bees' nest. Anatomy of Photo 51When you know how to look at it, this shadowy X-ray photograph speaks volumes about the shape of DNA. Bacteria TalkIn this interview, Bassler describes the 600 species of bacteria on your teeth each morning, and much more. Brain GeographyLearn how to model a brain and find out more about the cerebellum, spinal cord, brain stem, and cerebral cortex. Build a SteroidFollow the steps a chemist takes to synthesize a disease-fighting drug. Classifying LifeWhat do a polar bear and a sea cucumber have in common? Coelacanth QuizDoes this fish lay eggs? Guess What's Coming to Dinner?
A Curious Mind Here are five science stories that I found intriguing during 2013. I don’t mean to imply that these necessarily represent the most important discoveries, rather, these are simply stories that, for one reason or another, caught my attention more than others. 1. Great Ball of Fire On the morning of February 15, an asteroid that penetrated the Earth’s atmosphere unnoticed (Figure 1), exploded above the Siberian town of Chelyabinsk. The resulting shockwave shattered windows, destroyed buildings, and injured more than 1,500 people. Figure 1. Figure 2. 2. While excavating in a parking lot in Leicester, England, archaeologists hit the jackpot. 3. The “Goldbach conjecture” is one of those famous problems in mathematics that has already awaited its solution for more than a quarter of a millennium (since 1742). Figure 3. Figure 4. 4. In his pioneering attempts to calculate the age of the Earth (in 1862) Lord Kelvin had to estimate the temperature in the Earth’s deep interior. Figure 5. 5.
Study: Renewable electricity could be competitive | UNSW Science A carbon price of between $50 and $100 per tonne of carbon dioxide would make coal-fired and gas-fired power less economical than renewable electricity. Associate Professor Mark Diesendorf, of the Institute of Environmental Studies at UNSW, said all fossil-fuelled power stations in Australia’s National Electricity Market could be phased out and replaced economically and reliably with commercially available renewable energy technologies by increasing the carbon price to this “medium” level. “This carbon price range is considerably less than Treasury estimates for measures that would achieve far less in terms of cutting greenhouse gas emissions,” he said. The results of the peer-reviewed study by an interdisciplinary team at UNSW are to be published in the journal Energy Policy. To obtain their results, the team performed thousands of computer simulations using actual hourly data on electricity demand and matching this with hourly input from solar and wind power for the year 2010. Contacts:
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