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. Retroviruses such as HIV that are already within cells are much more easily transmitted when they are next to uninfected cells than if they are floating free in the bloodstream. http://www.physorg.com/news167988999.html Biology Tue, 28 Jul 2009 08:36:59 EST news167988999 (PhysOrg.com) -- Accumulation of the synaptic protein alpha-synuclein, resulting in the formation of aggregates called Lewy bodies in the brain, is a hallmark of Parkinson's and other related neurodegenerative diseases. This pathology appears to spread throughout the brain as the disease progresses. Now, researchers at the University of California, San Diego School of Medicine and Konkuk University in Seoul, South Korea, have described how this mechanism works. http://www.physorg.com/news167934383.html Medicine & Health Mon, 27 Jul 2009 18:20:02 EST news167934383 Researchers at the Johns Hopkins Malaria Research Institute have for the first time produced a malarial protein (Pfs48/45) in the proper conformation and quantity to generate a significant immune response in mice and non-human primates for use in a potential transmission-blocking vaccine. http://www.physorg.com/news167476832.html Medicine & Health Wed, 22 Jul 2009 10:21:03 EST news167476832 Researchers have uncovered the first cases in which HIV almost certainly was transmitted from mothers or other caregivers to children through pre-chewed food. The source of HIV in the pre-chewed food was most likely the infected blood in the saliva of the people who pre-chewed the food before giving it to the children. The researchers said their findings suggest that HIV-infected mothers or other caregivers should be warned against giving infants pre-chewed food and directed toward safer feeding options. http://www.physorg.com/news167416506.html Medicine & Health Tue, 21 Jul 2009 17:36:01 EST news167416506 A new microscope that views the subatomic universe -- the first of its kind in the world -- is being built for the University of Victoria, Canada, in collaboration with Hitachi High-Technologies. http://www.physorg.com/news166981239.html Nanotechnology Thu, 16 Jul 2009 16:41:18 EST news166981239 (AP) -- Families crowded around black-and-white television sets in 1969 to watch Neil Armstrong take man's first steps on the moon. http://www.physorg.com/news166680440.html Space & Earth Mon, 13 Jul 2009 05:30:06 EST news166680440 Antimicrobial treatments for bacterial vaginosis (BV) are effective, but taking lactobacillus tablets alongside metronidazole antibiotic therapy increases effectiveness over taking this antibiotic alone, according to a Cochrane Systematic Review. The researchers also concluded that intravaginal lactobacillus was as effective as oral metronidazole, although they did note unexplained drop-outs from the trials. http://www.physorg.com/news166251635.html Medicine & Health Wed, 08 Jul 2009 06:01:06 EST news166251635 Neural stem cells represent the cellular backup of our brain. These cells are capable of self-renewal to form new stem cells or differentiate into neurons, astrocytes or oligodendrocytes. Astrocytes have supportive functions in the environment of neurons, while oligodendrocytes form the myelin layer around axons in order to accelerate neuronal signal transmission. But how does a neural stem cell "know" which way it is supposed to develop? http://www.physorg.com/news165577024.html Chemistry Tue, 30 Jun 2009 10:37:33 EST news165577024 A team of researchers at the University of Illinois has created the world's first acoustic "superlens," an innovation that could have practical implications for high-resolution ultrasound imaging, non-destructive structural testing of buildings and bridges, and novel underwater stealth technology. http://www.physorg.com/news165064464.html Physics Wed, 24 Jun 2009 12:15:56 EST news165064464 Against the background of climate change, how can xDSL systems function more energy-efficiently and cost-effectively? Scientists are providing a solution combining existing methods which network providers could implement immediately. http://www.physorg.com/news165058793.html Technology Wed, 24 Jun 2009 10:40:29 EST news165058793 An undersea fibre optic cable bringing broadband Internet connectivity to east Africa, reached the Kenyan coast from the United Arab Emirates on Friday, the president said. http://www.physorg.com/news164038045.html Technology Fri, 12 Jun 2009 17:30:01 EST news164038045 New data on the persistence of avian influenza viruses in the environment has allowed a team of University of Georgia researchers to create the first model that takes into account both direct and indirect transmission of the viruses among birds. The model, which is detailed in the early online edition of the journal Proceedings of the National Academy of Sciences, has the potential to shed new light on how outbreaks begin in wild bird populations. http://www.physorg.com/news163168691.html Biology Tue, 02 Jun 2009 13:38:49 EST news163168691 A biological anthropologist from Appalachian State University working with an undergraduate student from Appalachian, an evolutionary biologist from UNC Greensboro, and a team of archaeologists from Deccan College (Pune, India) recently reported analysis of a 4000-year-old skeleton from India bearing evidence of leprosy. This skeleton represents both the earliest archaeological evidence for human infection with Mycobacterium leprae in the world and the first evidence for the disease in prehistoric India. http://www.physorg.com/news162625865.html Other Sciences Wed, 27 May 2009 06:51:47 EST news162625865 As climate change causes temperatures to increase in Hawaii's mountains, deadly non-native bird diseases will likely also creep up the mountains, invading most of the last disease-free refuges for honeycreepers - a group of endangered and remarkable birds. http://www.physorg.com/news162562227.html Biology Tue, 26 May 2009 13:11:09 EST news162562227 Researchers from Weill Cornell Medical College have published results showing that a new contraceptive device may also effectively block the transmission of the HIV virus. Findings show that the device prevents infection by the HIV virus in laboratory testing. The promising results are published in the most recent issue of the journal AIDS. http://www.physorg.com/news161968483.html Medicine & Health Tue, 19 May 2009 16:15:29 EST news161968483 A chemical found in green tea helps inhibit sexual transmission of the virus which causes AIDS, said a study Tuesday that recommends using the compound in vaginal creams to supplement antiretrovirals. http://www.physorg.com/news161963111.html Medicine & Health Tue, 19 May 2009 14:49:33 EST news161963111 In the summer heat, Rockney Compton's spring-fed koi pond doubles as a swimming hole for his three kids, and in the spring it is a water bowl for his dogs. http://www.physorg.com/news161960559.html Technology Tue, 19 May 2009 14:03:08 EST news161960559 (PhysOrg.com) -- Carbon nanotubes are at the center of the nanoelectronics research movement, with scientists making great progress toward getting nanotube-based electronic devices into the hands of consumers. But one area of carbon nanotube research where there has been considerably less success is creating repeating, regular patterns onto individual nanotubes, a task necessary for a key goal of nanoelectronics: patterning transistors directly onto nanotube surfaces. http://www.physorg.com/news161950586.html Nanotechnology Tue, 19 May 2009 11:17:36 EST news161950586 (PhysOrg.com) -- European researchers have developed a new system to protect vulnerable road users. The technology comes in two versions: a pre-crash system and a warning system. http://www.physorg.com/news161872259.html Technology Mon, 18 May 2009 13:32:16 EST news161872259 (AP) -- Health experts are looking very closely at the spread of swine flu among people in Spain, Britain and Japan, a WHO official said Sunday as Japan reported a one-day explosion of over 70 new cases, mostly among teenagers. http://www.physorg.com/news161786401.html Medicine & Health Sun, 17 May 2009 13:40:35 EST news161786401 A recently completed international multi-center clinical trial has found that acyclovir, a drug widely used as a safe and effective treatment to suppress herpes simplex virus-2 (HSV-2), which is the most common cause of genital herpes, does not reduce the risk of HIV transmission when taken by people infected with both HIV and HSV-2. http://www.physorg.com/news160995218.html Medicine & Health Fri, 08 May 2009 09:54:05 EST news160995218 (AP) -- Wi-Fi, WiMax, WirelessHD, WHDI and now ... WiGig? http://www.physorg.com/news160847500.html Technology Wed, 06 May 2009 16:54:08 EST news160847500 An Alzheimer's-related protein helps form and maintain nerve cell connections, according to a study published in the May 4 print issue of the Journal of Cell Biology. http://www.physorg.com/news160651450.html Biology Mon, 04 May 2009 10:24:54 EST news160651450 How do white blood cells - immune system 'soldiers' - get to the site of infection or injury? To do so, they must crawl swiftly along the lining of the blood vessel - gripping it tightly to avoid being swept away in the blood flow - all the while searching for temporary 'road signs' made of special adhesion molecules that let them know where to cross the blood vessel barrier so they can get to the damaged tissue. http://www.physorg.com/news160649845.html Medicine & Health Mon, 04 May 2009 10:02:28 EST news160649845 Two studies presented at the 104th Annual Scientific Meeting of the American Urological Association (AUA) show that adult circumcision reduces the risk of contracting the human immunodeficiency virus (HIV) and the risk of coital injury -without reducing pleasure or causing sexual dysfunction. http://www.physorg.com/news159967308.html Medicine & Health Sun, 26 Apr 2009 12:22:22 EST news159967308 (PhysOrg.com) -- Harvard researchers at Children`s Hospital Boston have developed a slow-release anesthetic drug-delivery system that could potentially revolutionize treatment of pain during and after surgery, and may also have a large impact on chronic pain management. http://www.physorg.com/news158940677.html Medicine & Health Tue, 14 Apr 2009 15:12:04 EST news158940677 Patient-to-patient transmission of hepatitis B virus (HBV) can occur as the result of routine clinical practices incorrectly thought to be risk-free. A review of 33 HBV outbreaks, published in the open access journal BMC Medicine, has shown that the most frequent HBV transmission routes are administration of drugs using multi-vial compounds and capillary blood sampling (e.g. for glucose monitoring) using non-disposable devices. http://www.physorg.com/news158474856.html Medicine & Health Thu, 09 Apr 2009 05:48:15 EST news158474856 Mapping the billions of connections in the brain is a grand challenge in neuroscience. The current method for mapping interconnected brain cells involves the use of room-size microscopes known as transmission electron microscopes (TEMs). Until now the process of mapping even small areas of the brain using these massive machines would have required several decades. In this week's open-access journal PLoS Biology, research teams at the University of Utah John A. Moran Eye Center and the University of Colorado at Boulder report technical advances that have reduced the time it takes to process high-speed "color" ultrastructure mapping of brain regions down to a few months. http://www.physorg.com/news157733857.html Biology Tue, 31 Mar 2009 15:59:13 EST news157733857 (PhysOrg.com) -- Science fiction fans still have another two months of waiting for the new Star Trek movie, but fans of actual science can feast their eyes now on the first movie ever of carbon atoms moving along the edge of a graphene crystal. Given that graphene - single-layered sheets of carbon atoms arranged like chicken wire - may hold the key to the future of the electronics industry, the audience for this new science movie might also reach blockbuster proportions. http://www.physorg.com/news157730577.html Nanotechnology Tue, 31 Mar 2009 15:03:37 EST news157730577 An international team of researchers led by Rodrigo Gonzalez of the Universidad del Valle de Guatemala reports that the transmission of onchocerciasis or river blindness has been broken in Escuintla, Guatemala, one of the largest endemic areas in the Western Hemisphere to date to stop the transmission of the parasitic disease. http://www.physorg.com/news157705145.html Medicine & Health Tue, 31 Mar 2009 07:59:35 EST news157705145