News tagged with volatility
Spurious switching points in traded stock dynamics
Physicists have rebuffed the existence of power laws governing the dynamics of traded stock volatility, volume and intertrade times at times of stock price extrema. They did this by demonstrating that what appeared as "switching ...
May 15, 2012 |
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Electronic nose prototype may be worn for safety-sniffing
(Phys.org) -- A UK company has developed an electronic nose that the company says can make a real difference, as a fast-acting device for detecting harmful substances in the environment. Peratech claims its electronic nose ...
Chemistry / Analytical Chemistry
May 12, 2012 |
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EPA to cut air pollution from natural gas 'fracking'
(HealthDay) -- The U.S. Environmental Protection Agency on Wednesday issued the first national standards to curb air pollution linked with the controversial practice of "fracking."
Apr 19, 2012 |
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A finger to the wind
Like testing the wind direction before taking flight, researchers led by scientists at Pacific Northwest National Laboratory assessed the meteorological conditions during a large observational study of carbon-containing ...
Space & Earth / Earth Sciences
Mar 06, 2012 |
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Liquid treasure or trouble? Political scientist explores downside of oil wealth
(PhysOrg.com) -- Oil-rich countries would seem to have won the mineral equivalent of the lottery, tapping into the kind of vast wealth that their counterparts with more diversified economies could only dream of.
Other Sciences / Economics & Business
Mar 01, 2012 |
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Pa. woman: Chemicals in my water in drilling area
(AP) -- A woman says state environmental officials refused to do follow-up tests after their lab reported her drinking water contained chemicals, but it's unclear where the pollutants came from.
Feb 24, 2012 |
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A hint of frog in the air: Macrolides are volatile pheromones from Madagascar frogs
Amphibians are at home in water, but can they also sense volatile compounds in the air? “Indeed they can,” reports Stefan Schulz. Working with colleague Miguel Vences and Ph.D. students Dennis Poth ...
Jan 24, 2012 |
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Decoding corn defenses for improved pest resistance
(PhysOrg.com) -- A clearer picture of corn's biochemical responses to insect and fungal attacks is emerging, thanks to U.S. Department of Agriculture (USDA) studies in Gainesville, Fla.
Jan 06, 2012 |
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Bacterial filters reduce stink from big pig factories
Concentrated animal feeding operations (CAFOs) on industrial animal factories can stink up an entire county, due to ammonia, and a smorgasbord of volatile organic compounds (VOCs). Jeppe Lund Nielsen of Aalborg University, ...
Dec 16, 2011 |
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Findings on biochar, greenhouse gas emissions and ethylene
Adding a charred biomass material called biochar to glacial soils can help reduce emissions of the greenhouse gases carbon dioxide and nitrous oxide, according to U.S. Department of Agriculture (USDA) scientists.
Dec 13, 2011 |
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Solar storms could 'sandblast' the moon
(PhysOrg.com) -- Solar storms and associated Coronal Mass Ejections (CMEs) can significantly erode the lunar surface according to a new set of computer simulations by NASA scientists. In addition to removing ...
Space & Earth / Space Exploration
Dec 06, 2011 |
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New device uses gold nanoparticles to test for lung cancer
The metabolism of lung cancer patients is different than the metabolism of healthy people. And so the molecules that make up cancer patients' exhaled breath are different too. A new device pioneered at the University of Colorado ...
Nanotechnology / Bio & Medicine
Nov 17, 2011 |
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Advance toward a breath test to diagnose multiple sclerosis
Scientists are reporting the development and successful tests in humans of a sensor array that can diagnose multiple sclerosis (MS) from exhaled breath, an advance that they describe as a landmark in the long ...
Chemistry / Analytical Chemistry
Oct 26, 2011 |
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Can aromatherapy produce harmful indoor air pollutants?
Spas that offer massage therapy using fragrant essential oils, called aromatherapy, may have elevated levels of potentially harmful indoor air pollutants such as volatile organic compounds (VOCs) and ultrafine ...
Oct 20, 2011 |
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India's TCS slides near 8% as earnings disappoint
Shares in India's biggest software exporter TCS plunged nearly eight percent on Tuesday, a day after the firm posted earnings figures that fell short of market expectations.
Oct 18, 2011 |
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