A new math model finds that the cochlea's spiral shape enhances low frequencies
... the energy in the waves to accumulate against the outside edge of the chamber. She likens this to the "whispering gallery mode" effect where whispers traveling along curved walls of a large chamber can remain strong enough so they can be heard clearly on the opposite side of the room. This uneven energy dis...Tequila! Chemists help assure quality of popular Mexican beverage
...when these products are bottled in other countries outside the strict regulatory watch of the Mexican government, Lachenmeier says. Using ion and gas chromatography, scientists analyzed 31 tequila samples of the 100 percent Agave category and compared the results to 25 mixed-tequila samples. The pure Aga...Incarcerated women more likely to use birth control when given in jail
...productive health services that are insurmountable outside of prison have been removed." Women were considered to initiate birth control if they were given Depo-Provera, had an intrauterine device inserted, or were prescribed an oral or transdermal hormonal contraceptive. Condom use was not considered reliab...T cell 'brakes' lost during human evolution
...d to sialic acids, the complex sugars found on the outside of cells. Siglec molecules seem to regulate T cell activation in chimpanzees by restricting the degree of signaling from the T cell receptor, which normally triggers the response of T cells in the immune system. "Siglecs are like 'brakes' that can...OHSU research reveals possible future target for delaying or stopping Alzheimer's
...d that beta amyloid could be found both inside and outside of the mitochondria. Because mitochondrial oxidative damage is a hallmark of Alzheimer's, the scientists believe the higher accumulations of these substances may be responsible. In addition, the scientists found increased levels of hydrogen peroxide ...Minimally invasive approach can take the pain out of herniated disks
...e pressure inside goes down so the pressure on the outside of the disk decompresses," he says. "You are basically making a smaller disk so it's not pushing on surrounding structures. So, there is a degree of immediate relief." Within two weeks, most patients say they are 50 percent to 60 percent better and b...New insights into the impact of injury on cartilage cells
... reduced viability of cartilage cells located well outside the vicinity of direct impact. In cartilage samples taken 6 to 9 mm from the impact site, and even in samples taken 10 mm or more from the impact site, these critical cells to tissue renewal had largely been killed off by leukocytes. The real culpr...Heart rhythm society issues draft recommendations on performance policies for pacemakers and ICDs
...ould establish independent, standing committees of outside experts to analyze device performance reports and to recommend appropriate action. Should communicate with patients directly using standard patient communication forms to notify patients regarding potential malfunctions. FDA: Should use simple l...28-site trial studying Chinese herb as Alzheimer's treatment
...linical trials assessing its toxicity and efficacy outside of China. Chinese studies have suggested that huperzine A is well tolerated and effective. Paul Aisen, M.D., professor of neurology and leader of the new multi-site study, says huperzine A shows great promise as a treatment for AD. "Based on studie...Study assesses relationship between conflicts of interest and voting patterns at FDA meetings
... the advice of the advisory committees composed of outside scientific experts. In 2001, 21 percent of these approvals were preceded by an advisory committee meeting. The authors note that recent high-profile cases have called attention to the possible vulnerability of committee decisions to financial confli...Study finds novel vaccine curbs brain tumor growth, increases survival
...resence of just one type of protein that studs the outside of a glioma tumor. This protein, epidermal growth factor variant III (EGFRvIII), is found on 30 percent to 50 percent of brain tumors, as well as on some breast and non-small-cell lung cancers, but not on normal tissue. Heimberger believes EGFRvIII d...Locked door psychiatric units have more disadvantages than advantages say staff
...ent care by 73 per cent and protection against the outside world by 68 per cent" says lead author Kristina Haglund. "We know where the patients are" commented one member of staff, while another said that "it gives patients a sense of security when the ward is locked." Another said that family members were re...University of Utah to help build bionic arm
...to your thoughts, that allows you to feel both the outside world and your own movements, and that is as strong and graceful as an intact, biological limb," says bioengineer Greg Clark, the University of Utah's principal investigator on the project. "That's what our researchers, teaming with others around the...Study in Science holds promise for a new approach to drug therapy
...ere most drugs change the behavior of GPCRs on the outside of cells, the new class of drugs seeks to influenc...h some parts of the receptor exposed to the cell's outside and others exposed to its interior. When a GPCR, for example, binds to its ligand on the outer surfa...Protein's potential as a regulator of brain activity discovered
...treatment of diseases affecting tissues and organs outside of the brain....Watching the brain switch off 'self'
...occurrence of his or her sensory experience to the outside world. "To conclude, the picture that emerges from the present results is that, during intense perceptual engagement, all neuronal resources are focused on sensory cortex, and the distracting self-related cortex is inactive. Thus, the term "losing yo...Molecular imaging may lead to earlier diagnosis of childhood respiratory virus
...990s. They were initially used for in vitro assays outside cells. But Santangelo and former Georgia Tech Ph.D. student Nitin Nitin, now a postdoctoral researcher at Rice University, devised methods for getting the beacons inside the cell without destroying the probe and without changing the cells. Santangel...Fetuses cannot feel pain, says expert
...vity of pain. Development of the mind only occurs outside the womb, through the actions of the infant and interactions with primary caregivers. So, not only is the biological development to support pain experience ongoing, but the environment after birth, so necessary to the development of pain experience,...Stem cell transplants improve recovery in animal models for stroke, cerebral palsy
...er of injured cells that survived in the area just outside the area of greatest damage, also referred to as ...d of that ischemic core," Dr. Borlongan said. "But outside of that core there is a lining, what we call the penumbra, and that penumbra, if you do not treat it......, who has suffered from TN for 16 months. "I'll go outside and the breeze hits my face and it feels like the most intense toothache I've ever had in my life. It drops me to my knees almost. I can totally understand why they call it the suicide disease. It affects so many aspects of your life." Then there's M...