Impression tridimensionnelle Un article de Wikipédia, l'encyclopédie libre. L'impression 3D ou impression tridimensionnelle sont les termes courants utilisés pour parler des procédés de fabrication additive. Initialement, en raison de leurs défauts originels, ces procédés ont été développés pour le prototypage rapide, mais maintenant ils sont de plus en plus utilisés pour la fabrication de pièces fonctionnelles. L'impression tri-dimensionnelle permet de produire un objet réel : un opérateur dessine l'objet sur un écran en utilisant un outil de Conception assistée par ordinateur (CAO). Selon le procédé une panoplie de matériaux peut être utilisée : le plastique (ABS), la cire, le métal, le plâtre de Paris , les céramiques et d'autres encore. Les applications vont de l'industrie - la production de voitures, d'avions,, de bâtiments, de biens de consommation, etc., à la visualisation de projets, de vérification d'ergonomie pour l'architecture ou les études de design. En 2013[modifier | modifier le code]
Your Medical Records Are for Sale As hospitals shift to digital medical records, administrators promise patients better care and shorter waits. They often neglect to mention that they share files with state health agencies, which in turn sell the information to private data-mining companies. The records are stripped of names and addresses, and there’s no evidence that data miners are doing the legwork to identify individual patients. Latanya Sweeney, the director of Harvard University’s Data Privacy Lab, identified 35 patients from a Washington database by buying state medical data and creating a simple software program to cross-reference that information with news reports and other public records. From a brief local-news story on a motorcycle crash, she matched retired Vietnam veteran Ray Boylston to a patient file documenting a broken pelvis, ruptured spleen, kidney failure, and bladder removal. Exempt from federal health-privacy laws, states have long sold medical data to help finance public health studies.
3-D Printer Brings Dexterity To Children With No Fingers : Shots - Health News Hide caption One version of the Robohand includes 3-D printed parts assembled with metal hardware. New parts can be easily "printed" as the child grows. Courtesy of Makerbot Hide caption Ivan Owen, a special effects artist in Bellingham, Wash., creates large mechanical hands. He is also one of the creators of the Robohand. Cindy Carpien/NPR Hide caption Richard Van As, a South African carpenter who lost a portion of his hand in an accident, assembles a Robohand and fits it to Liam Dippenaar. Hide caption The newest version of the Robohand is made of snap-together parts. Richard Van As was working in his home near Johannesburg, South Africa, in May of 2011, when he lost control of his table saw. "It's a possibility that it was a lack of concentration," he says. The carpenter lost two fingers and mangled two more on his right hand. As soon as he got out of the hospital, Van As began researching prosthetics online. In time, Van As came across a YouTube video from Ivan Owen. YouTube
NeuroKnitting: Knitting a Personalized Scarf from Brainwave Activity NeuroKnitting [knitic.com] by Varvara Guljajeva, Mar Canet, and Sebastian Mealla consists of a collection of knitted garments that represent the wearer's affective and cognitive states while listening to Bach's Goldberg Variations' aria and its first 7 variations. First the EEG correlates of relaxation, engagement and cognitive load were recorded while people were listening to the musical piece. This information was then used by an open hardware knitting machine Knitic to create a bicolor pattern for knitting several scarves. The knitted garments thus visualize the listener's affective and cognitive states as a unique and personalized textile pattern.
Intelligent knife tested on cancer patients in London hospitals | Science An intelligent knife that knows when it is cutting through cancerous tissue is being tested in three London hospitals. Experts believe the wand-like device, the first of its kind in the world, will revolutionise cancer treatment by removing uncertainty from surgery. In an early study, the iKnife identified malignant tissue in cancer patients having operations with 100% accuracy. After more extensive trials it could be approved for general use in operating theatres within three years. Surgery is often the best hope of a cancer cure, yet even the best surgeons cannot be sure of removing every part of a tumour. In the case of breast cancer, more than 20% of the cancerous tissue may be left behind. The iKnife helps the surgeon by indicating exactly where the cancerous tissue is, and when it has all been removed. It could allow surgeons to perform riskier operations, and also has the ability to reveal the original site of a cancer that has spread.
Une application Android pour piloter votre imprimante 3D Si vous pratiquez l'impression 3D, voici une application Android qui vous permettra de gagner un peu de temps. Ça s'appelle 3D Fox et ça permet d'imprimer directement depuis votre téléphone Android via Bluetooth ou USB OTG (connexion au port USB du téléphone). Il s'agit d'une première version donc il est possible que tout ne fonctionne pas encore avec votre imprimante. Pour le moment, avec 3D Fox, vous pouvez uploader des fichiers Gcode de 2 Mb maximum et lancer des impressions sur plusieurs imprimantes. Ensuite, dans une version ultérieure, vous pourrez changer la vitesse et la température durant l'impression, gérer un second extrudeur, gérer les ventilo...etc. Pratique pour imprimer sans devoir utiliser son ordinateur. Notez que cette application a été testée sur une Reprap Prusa i3 avec Ramps+Marlin+Slic3r et un module Bluetooth JY-MCU. 3D Fox est téléchargeable ici sur le Play Store. Merci à Nicolas. Rejoignez les 56078 korbenautes et réveillez le bidouilleur qui est en vous
Scientists claim that 'self' can relocate to other bodies, or be made to include a third arm For millennia, philosophers have debated whether or not the self exists solely in the mind, the body, or both. Well, it's unclear whether this will help clear things up or just muddy the waters further, but Swedish neuroscientists are now claiming that the human brain can add outside objects such as a third arm to one's physical sense of self, and that people can even mentally project their "self" out of their own body and into someone else's. If these findings hold up, the implications for virtual reality, robotics and prostheses could be substantial. Experiments were performed at Stockholm's Karolinska Institutet medical university, in which a highly-realistic prosthetic right arm was placed on a table beside human subjects' own arms, so they could see all three. Scientists then simultaneously touched both the prosthetic arm and the subjects' own right arms with a small brush, at the same location on both arms.
3D printed meat could soon be cheap and tasty enough to win you over | News The next time you’re about to bite into a hamburger, take a moment to consider the resources that went into making it. In a recent Solve for X talk, Andras Forgacs laid out all the statistics, and explained how tantalizingly close we are to a more sustainable method of meat production. Basically, humanity may soon be 3D printing meat instead of growing it in an animal. Forgacs starts by explaining just how costly a single quarter-pound beef patty is to produce. For that one serving, 6.7lbs of grains, 600 gallons of water, and 75 square feet of grazing land were used. As economic opportunities continue to lift populations around the world into the middle class, demand for meat is rising. Advances in bioengineering have been able to produce meat analogs, but the process has always been stupendously expensive, and the results were only passable. Applying 3D printing to artificial meats could be the answer, according to Forgacs.