Accueil | Fils de syndication

Scientific American - Objets Actus

Too Good to Be True?: Fat That Keeps You Thin
Jeudi 18 Septembre 2008 - 16:00 - 2 mois, 1 semaine depuis - Presse spécialisée - Scientific American
Scientists have stumbled on a chemical in the body that could one day prevent or reverse diseases linked to obesity. [More]

What is deep-vein thrombosis (DVT)?
Jeudi 18 Septembre 2008 - 15:30 - 2 mois, 1 semaine depuis - Presse spécialisée - Scientific American
Acting Surgeon General Steven Galson issued a "call to action" this week to make more Americans aware of deep-vein thrombosis, life-threatening blood clots that occur in the legs or pelvis. The condition affects 350,000 to 600,000 Americans every year. DVT and pulmonary embolism (lung blood clots; some originate in the legs) kill an estimated 100,000 people annually, according to Galson. [More]

What is Deep Vein Thrombosis (DVT)?
Jeudi 18 Septembre 2008 - 15:30 - 2 mois, 1 semaine depuis - Presse spécialisée - Scientific American
Acting Surgeon General Steven Galson issued a "call to action" this week to make more Americans aware of Deep Vein Thrombosis, life-threatening blood clots that occur in the legs or pelvis. The condition affects 350,000 to 600,000 Americans every year. DVT and pulmonary embolism (lung blood clots; some originate in the legs) kill an estimated 100,000 people annually, according to Galson. [More]

Rethinking the Wrinkling: Key Genes Cause Aging
Mercredi 17 Septembre 2008 - 22:00 - 2 mois, 2 semaines depuis - Presse spécialisée - Scientific American
It afflicts every creature on this planet, and everyone dreams of an antidote. But even after decades of research, aging largely remains a mystery. Now new research findings suggest there is a good reason for this impasse: scientists may have been thinking about the causes of aging all wrong. Instead of being the result of an accumulation of genetic and cellular damage, new evidence suggests that aging may occur when genetic programs for development go awry.The idea that stress and reactive forms of oxygen--“free radicals” that are the normal by-products of metabolism--cause aging has dominated the field for 50 years. Studies on the worm Caenorhabditis elegans have shown that reducing exposure to reactive oxygen species increases life span, and worms that have been bred to live longer are also more resistant to stress. But few studies have definitively linked oxidative damage to altered cellular function. [More]

Seedy but Speedy: Fungus Spews Spores at 55 Mph
Mercredi 17 Septembre 2008 - 17:55 - 2 mois, 2 semaines depuis - Presse spécialisée - Scientific American
In a finding that could help control harmful fungus, researchers have discovered a high-speed mechanism the germs use to project their spores into the air. Scientists from Miami University (M.U.) in Oxford, Ohio, and the College of Mount St. Joseph in Cincinnati report in the journal PLoS ONE that fungi may be one of the fastest land species, clocking speeds of up to 55 miles (88 kilometers) per hour and producing accelerations 180,000 times greater than gravity. [More]

Open-Source Thinking Revolutionizes Prosthetic Limbs
Mardi 16 Septembre 2008 - 22:00 - 2 mois, 2 semaines depuis - Presse spécialisée - Scientific American
Before Jonathan Kuniholm, a marine reservist, was shipped off to the war in Iraq, he and three friends formed a research and development firm they called Tackle Design. The four men had worked together in an industrial engineering class at North Carolina State University (N.C.S.U.), and, filled with youthful enthusiasm, they hoped their fledgling company could survive on jobs that were interesting and beneficial rather than simply moneymaking. They worked with inventors--making prototypes for a plastic lock to keep shoestrings tied and a fishing lure with an embedded LED--as well as with medical engineers from their alma mater, who were developing tools for minimally invasive robotic surgery.Then, before business had a chance to get off the ground, Kuniholm was deployed. A few months later, on New Year’s Day 2005, he and about 35 other marines were ambushed near the Hadithah Dam along the Euphrates River northwest of Baghdad. His platoon had been looking for insurgents who had fired at a Swift boat patrolling around the dam a few hours earlier. As the marines closed in on the suspected hotspot, an IED--improvised explosive device--hidden in a can of olive oil exploded. Shrapnel ripped through the platoon, and Kuniholm was blasted off his feet. Moments later, when he came to his senses, he discovered his M16 rifle had been blown in half and his right arm was nearly severed just below the elbow. Caught in a raging firefight, Kuniholm pulled himself out of harm’s way. His fellow marines called for air evacuation, and soon surgeons at a hospital near Baghdad were amputating his ravaged arm. [More]

BPA study: Plastic chemical is unhealthy for children and other living things
Mardi 16 Septembre 2008 - 16:15 - 2 mois, 2 semaines depuis - Presse spécialisée - Scientific American
New research shows that a controversial chemical in plastic baby and water bottles, cups and food containers may be linked to heart disease and diabetes, prompting new fears about the ingredient. [More]

Can Stem Cells Block Stroke Damage? Yes, but in a Surprising Way
Mardi 16 Septembre 2008 - 13:00 - 2 mois, 2 semaines depuis - Presse spécialisée - Scientific American
Injecting stem cells into the brains of mice that recently suffered a stroke can reduce nerve cell (neuron) damage by up to 60 percent, according to new research. [More]

Copper Knocks out Fish Bacteria
Lundi 15 Septembre 2008 - 22:01 - 2 mois, 2 semaines depuis - Presse spécialisée - Scientific American
[The following is an exact transcript of this podcast.] [More]

Breast, Ovarian Cancer Risk Underestimated for Asian Women
Vendredi 12 Septembre 2008 - 18:00 - 2 mois, 2 semaines depuis - Presse spécialisée - Scientific American
Asian women at risk for breast and ovarian cancers may not be getting the genetic screening that could save them. The reason: computer models commonly used to assess whether women should be tested for harmful genetic mutations may underestimate the risk in families of Asian descent, according to a new study in the Journal of Clinical Oncology. [More]

Actus fournies par : Scientific American

Ce site internet met des informations à votre disposition seulement et uniquement dans un but pédagogique. Elles ne peuvent en aucun cas remplacer la consultation d'un médecin ou les soins prodigués par un praticien qualifié et ne doivent par conséquent jamais être interprétés comme pouvant le faire.
Copyright © imedecin
Rental::Voyage::Annuaire web
Médecine et nouvelles technologies::Vidéos médecine::Forum santé

Accueil | Fils de syndication

imedecin.fr

Imedecin.com

Sites imedecin