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Medicine

Using Nanotechnology To Build Thinner, Stronger Condoms 253

Posted by samzenpus from the making-it-better dept.
Hugh Pickens DOT Com writes "Discovery Magazine reports that the Bill and Melinda Gates Foundation has granted $100,000 to Boston University School of Medicine (BUSM) and Boston Medical Center (BMC) to develop a nanoparticle coating for condoms that will make them more comfortable and stronger while simultaneously keeping them thin to preserve – and increase – sensation in order to make them more appealing to use. According to the Gates Foundation, in the time that condoms have been in use, not much has changed: '[Condoms] have undergone very little technological improvement in the past 50 years. The primary improvement has been the use of latex as the primary material and quality-control measures, which allow for quality testing of each individual condom. Material science and our understanding of neurobiology has undergone revolutionary transformation in the last decade, yet that knowledge has not been applied to improve the product attributes of one of the most ubiquitous and potentially underutilized products on earth.' The nanotechnology that the Boston doctors intend to use for their improved condoms will be superhydrophillic nanoparticles that coat the condom and trap water to make them more resilient and easier to use. 'We believe that by altering the mechanical forces experienced by the condom, we may ultimately be able to make a thinner condom which reduces friction, thereby reducing discomfort associated with friction increases pleasure, thereby increasing condom use and decreases rates of unwanted pregnancy and infection transmission.'"
Science

Chefs Preview Surface Tension-Based Cocktail Garnishes 33

Posted by samzenpus from the drinking-science dept.
carmendrahl writes "Last fall, MIT researchers made news for developing two bioinspired cocktail toppers-- a moving cocktail boat and a floral pipette-- in collaboration with James Beard Award-winning chef José Andrés. Both the boat and floral pipette operate by taking advantage of surface tension-- either to propel the boat forward or to keep small drops of liquid inside the flower's petals. Some of those early garnishes were nominally edible. But to make them worthy of a restaurant debut requires balancing of flavors, temperature, density, and alcohol content, among other factors. Here's a look inside Andrés' company ThinkFoodGroup to see how the project is coming along. The toppers aren't available to the public just yet."
Science

Government Lab Uses Smartphones To Measure Gamma Ray Exposure 105

Posted by samzenpus from the hulk-phone-is-strongest-there-is dept.
KentuckyFC writes "Back in 2008, Slashdot reported that researchers were developing ways of turning cellphones into radiation detectors. Since then a few apps have even appeared that claim to do this. However, convincing evidence that they work as advertised is hard to come by. Now government researchers at Idaho National Labs have created their own app that uses an ordinary smartphone as a gamma ray detector, put it through its paces in the lab and published the results. The pixels in smartphone cameras can detect gamma rays in the same way as they pick up visible light. So when the lens is covered, the image should reveal evidence of gamma ray exposure once other noise has been removed, such as that from heat and current leakage. These guys have tested several types of Android smartphone with a variety of gamma ray sources at various different doses. The researchers say the phones give a reasonable measure of radiation dose, can detect the direction of source (by comparing the measurements from the front and back cameras) and can even measure the energy of the gamma rays by measuring the length of the tracks that appear in the image. While the results do not match the quality of bespoke detectors, that may not matter since in many circumstances cellphones are likely to be the only sensors that are available. That could be useful for emergency services, air travelers wanting to monitor their extra radiation dose on routes over the arctic and people who live in areas with a higher than average background radiation level."
Science

Experiment Shows Caffeine Boosts Long Term Memory 123

Posted by samzenpus from the its-fun-to-stay-up-late dept.
An anonymous reader writes "A team of researchers at Johns Hopkins has published results demonstrating that caffeine seems to boost long-term memory. In a double-blind study, participants were shown a series of images soon after taking either a caffeine pill or a placebo; 24 hours later they were tested on a similar, but not identical, series of images. Those who took the caffeine pill were more likely to correctly classify images as being different, identical, or similar to those seen the previous day; researchers refer to this as a 'pattern separation' test. The beneficial effect of caffeine on the long-term memory of honey bees was covered by Slashdot earlier."
Earth

How Weather Influences Global Warming Opinions 517

Posted by samzenpus from the cold-is-the-new-hot dept.
An anonymous reader writes in with this story about how people's belief in climate change shifts with the temperature. "Last week's polar vortex weather event wasn't only hard on fingers, toes and heating bills. It also overpowered the ability of most people to make sound judgments about climate change, in the same way that heat waves do, according to a new study published in the Jan. 11 issue of the journal Nature Climate Change. Researchers have known for some time that the acceptance of climate change depends on the day most people are asked. During unusually hot weather, people tend to accept global warming, and they swing against it during cold events."
Space

Hubble Telescope Snaps Images of Tarantula Nebula 32

Posted by samzenpus from the look-at-that dept.
An anonymous reader writes "NASA's Hubble Space Telescope snapped a series new images inside the Tarantula Nebula, located within the Large Magellanic Cloud (LMC) – the third closest galaxy to the Milky Way. Hubble officials previously released images of the spidery nebula, however, this is the deepest view of the intriguing cosmic region full of star clusters yet."
Medicine

India Frees Itself of Polio 309

Posted by samzenpus from the wiped-out dept.
An anonymous reader writes "It's been three years since the last recorded polio case in India and health officials hope to officially certify India polio free in the next few weeks. 'Hamid Jafari, director of the WHO's polio-eradication campaign, says the agency's ambitious quest to stop all polio transmission by the end of 2014 is now within reach. If that is achieved, and no new cases crop up for three years, polio—like smallpox—will be officially banished from the planet. "India was one of the most important sources" from where the virus spread to other countries, said Dr. Jafari.'"

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