Sentences with phrase «at higher levels of radiation»

What's next: Weber and Gao and their colleagues hope to apply the work to more complex materials to look at how trapped electrons affect the way defects move and interact with each other when the material is exposed to more than one blast of radiation over longer times in much larger systems and at higher levels of radiation.

Not exact matches

Researchers blasted rats with full - body doses of RF radiation (mostly at higher levels than those associated with cell phones) from the time they were born until they were two years old for nine hours a day.

The level of radiation found in stream sediments at the disposal sites was about 650 times higher than radiation in upstream sediments.

Levels detected in a short duration pulse at the plant itself have reached as high as 8,217 microSieverts per hour, or eight times the dose endured in a typical CT scan and four times the normal dose of background radiation in a year.

Astrobiologists, who will be presenting their work at the European Planetary Science Congress (EPSC) 2013 in London on Monday 9 September, have shown that Raman spectroscopy can be used to detect micro-organisms even after they have been damaged by exposure to very high levels of radiation, as is encountered on the Martian surface.

But Alex Dessler, a space physicist at the University of Arizona, Tucson, says the same area of the planet also produces unusual radio signals, flares of ultraviolet light, and high levels of infrared radiation and even seems to be correlated with a patch in Jupiter's magnetosphere that pumps out high - energy electrons.

Using spectral readings from telescopes at the Keck Observatory in Hawaii, Hand has found high levels of oxidative chemicals such as sulfate, oxygen, sulfur dioxide and hydrogen peroxide on Europa's surface, which are produced as ionizing radiation from Jupiter scours it, splitting apart water molecules and sulfur compounds in the uppermost layers of its ice.

In a congressional testimony yesterday, Gregory Jaczko, chairman of the U.S. Nuclear Regulatory Commission (NRC) said of the conditions at the plant: «We believe that radiation levels are extremely high.»

The sixth, Bikini Island, had a much higher level of radiation, at 184 millirem per year.

The researchers also found much higher levels of polycyclic aromatic hydrocarbons, which are known mutagens, in particles at the polluted site, making these chemicals a leading suspect.Similar mutations have been reported in people exposed to radiation.

It uses high - energy radiation (similar to x-rays but at a much higher energy level) that injures the DNA (genetic material) of cells.

The warming trends in looking at numerous 100 year temperature plots from northern and high elevation climate stations... i.e. warming trends in annual mean and minimum temperature averages, winter monthly means and minimums and especially winter minimum temperatures and dewpoints... indicate climate warming that is being driven by the accumulation of greenhouse gases in the atmosphere — no visible effects from other things like changes in solar radiation or the levels of cosmic rays.

It does seem at first glance that a warm troposphere would warm the stratosphere, but the explanation that more of the earth - sourced infrared radiation is absorbed lower in the the troposphere by higher levels of CO2 makes sense if one thinks about the thermodynamic losses involved in the CO2 re-radiation processes; some of the earth - sourced infrared is transformed into kinetic energy and only a fraction is reradiated as more infrared radiation (if I'm understanding correctly).

Kinda like a canopy capping the growth of clouds but still creating shade and solar radiation management at higher and lower levels.

Note: At least one of the YouTube posters (Shazzy Mazzy of The News Insight) and Victoria Woollaston, the reporter who covered the drone tapes from the Daily Mail Online, appear skeptical about radiation dangers to life on earth: «many of these areas are said to be covered in radioactive soil,» «reports claim the soil and water in the region still contains high levels of radiation that makes the clean - up effort difficult.»

Until the surface warms to a level that emits radiation at a rate that is balanced with the higher level of energy capture there will continue to be «net energy capture».

The net result is an upward transfer of infrared radiation from warmer levels near the Earth's surface to colder levels at higher altitudes.

It determines how much of the radiation delivered to land goes into warming the near - surface atmosphere compared with how much is released as latent heat fuelling precipitation at higher levels.

Some people will get a dose of radiation at a level that would increase the risk of cancer in 25 years, and a few might suffer radiation poisoning, which at high doses can be fatal.

Keep in mind that even the radiation at the low levels of that atmosphere will move higher due to more CO2 before it is absorbed.

The whole concept of direct radiation supposedly heating the surface to observed temperatures is wrong and a totally different paradigm involving entropy maximization and thermodynamics at the molecular level is now known to be what explains planetary surface temperatures being higher than what can be explained with radiation.

What we know of the connection between solar activity and radiation, coupled with high abundances of isotopes in tree - rings and ice - cores (Fig. 2d), supports the likely case that during the Maunder Minimum solar activity remained for over half a century at very low levels.

At sea level, the energy content of the evaporated water molecules will be quite high, but the temperature of the air will not be because most of the air is N2 (temperature is an average), which isn't heated by IR radiation from the water vapor molecules.

The important thing is that the radiation at the lower levels has to make its way up through higher levels of the atmosphere before it is able to escape into space.

There is no consistent evidence of human health effects from exposure to extremely low - frequency electromagnetic radiation at much higher levels than is present near wind farms.