http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- Researchers at Sandia National Laboratories have built a machine that uses the sun's energy to convert carbon dioxide waste from power plants into transportation fuels such as gasoline, diesel, and jet fuel. The system could provide an alternative to carbon sequestration; instead of permanently storing CO2 underground, the CO2 could be recycled and put to use. http://www.physorg.com/news178203219.html Chemistry Mon, 23 Nov 2009 13:06:36 EST news178203219 Colonoscopy represents one of the great weapons against cancer. In one step, a physician can find precancerous lesions in the colon and then cut them out, an on-the-spot intervention that prevents cancer from developing. Now, researchers at the Winthrop Rockefeller Cancer Institute and the University of Arkansas for Medical Sciences have developed another fiber optic technique that can detect lymph node metastases and destroy them on the spot, an action that could prevent the further spread of breast cancer, melanoma, or gastrointestinal cancer, all of which spread through the lymphatic system. http://www.physorg.com/news176116481.html Nanotechnology Fri, 30 Oct 2009 10:15:06 EST news176116481 Many medical conditions, such as cancer, diabetes and chronic pain, require medications that cannot be taken orally, but must be dosed intermittently, on an as-needed basis, over a long period of time. A few delivery techniques have been developed, using an implanted heat source, an implanted electronic chip or other stimuli as an "on-off" switch to release the drugs into the body. But thus far, none of these methods can reliably do all that's needed: repeatedly turn dosing on and off, deliver consistent doses and adjust doses according to the patient's need. But now, a research team led by Daniel Kohane of Children's Hospital Boston has devised a solution that combines magnetism with nanotechnology. http://www.physorg.com/news176116233.html Nanotechnology Fri, 30 Oct 2009 10:11:06 EST news176116233 Tree leaves may be powerful tools for monitoring air quality and planning biking routes and walking paths, suggests a new study by scientists at Western Washington University in Bellingham. The research will be presented at this month's Annual Meeting of the Geological Society of America in Portland, Oregon. http://www.physorg.com/news174827586.html Space & Earth Thu, 15 Oct 2009 12:30:01 EST news174827586 (PhysOrg.com) -- A research team at the National Institute of Standards and Technology studying sugar-coated nanoparticles for use as a possible cancer therapy has uncovered a delicate balancing act that makes the particles more effective than conventional thinking says they should be. Just like individuals in a crowd respecting other people's personal space, the particles work because they get close together, but not too close. http://www.physorg.com/news172862738.html Nanotechnology Tue, 22 Sep 2009 19:00:02 EST news172862738 (PhysOrg.com) -- The widespread idea that Mars is red due to rocks being rusted by the water that once flooded the red planet may be wrong. Recent laboratory studies show that the red dust may be formed by ongoing grinding of surface rocks and liquid water need not have played any significant role in the red dust formation process. These findings, which open up the debate about the history of water on Mars and whether it has ever been habitable, have been presented at the European Planetary Science Congress by Dr Jonathan Merrison. http://www.physorg.com/news172481192.html Space & Earth Fri, 18 Sep 2009 08:26:56 EST news172481192 Iron and manganese compounds, in addition to sulfate, may play an important role in converting methane to carbon dioxide and eventually carbonates in the Earth's oceans, according to a team of researchers looking at anaerobic sediments. These same compounds may have been key to methane reduction in the early, oxygenless days of the planet's atmosphere. http://www.physorg.com/news166367681.html Space & Earth Thu, 09 Jul 2009 14:15:22 EST news166367681 Staphylococcus epidermidis is quite an opportunist. Commonly found on human skin, the bacteria pose little danger. But S. epidermidis is a leading cause of infections in hospitals. From catheters to prosthetics, the bacteria are known to hitch a ride on a range of medical devices implanted into patients. http://www.physorg.com/news165224918.html Nanotechnology Fri, 26 Jun 2009 08:49:26 EST news165224918 Nanoparticles specially engineered by University of Central Florida Assistant Professor J. Manuel Perez and his colleagues could someday target and destroy tumors, sparing patients from toxic, whole-body chemotherapies. http://www.physorg.com/news164379539.html Nanotechnology Tue, 16 Jun 2009 14:40:03 EST news164379539 Rice University researchers today announced that the first field tests of "nanorust," the university's revolutionary, low-cost technology for removing arsenic from drinking water, will begin later this year in Guanajuato, Mexico. http://www.physorg.com/news162642319.html Nanotechnology Wed, 27 May 2009 11:26:02 EST news162642319 By combining nanoparticles with a scorpion venom compound already being investigated for treating brain cancer, University of Washington researchers found they could cut the spread of cancerous cells by 98 percent, compared to 45 percent for the scorpion venom alone. http://www.physorg.com/news159108900.html Nanotechnology Thu, 16 Apr 2009 13:56:10 EST news159108900 (PhysOrg.com) -- Biological fuel cells use enzymes or whole microorganisms as biocatalysts for the direct conversion of chemical energy to electrical energy. One type of microbial fuel cell uses anodes (positive electrodes) coated with a bacterial film. The fuel consists of a substrate that the bacteria can break down. The electrons released in this process must be transferred to the anode in order to be drawn off as current. But how can the electrons be efficiently conducted from the microbial metabolism that occurs inside a cell to the anode? http://www.physorg.com/news149857405.html Chemistry Tue, 30 Dec 2008 11:03:25 EST news149857405 (PhysOrg.com) -- By combining a magnetic nanoparticle, a fluorescent quantum dot, and an anticancer drug within a lipid-based nanoparticle, a multi-institutional research team headed by members of the National Cancer Institute`s (NCI) Alliance for Nanotechnology in Cancer has created a single agent that can image and treat tumors. In addition, this new nanoparticle is able to avoid detection by the immune system, enabling the particle to remain in the body for extended periods of time. http://www.physorg.com/news141655268.html Nanotechnology Fri, 26 Sep 2008 13:41:08 EST news141655268