Sentences with phrase «with ultraviolet radiation»

Many of these planets, being so close to their star, are likely to be bombarded with ultraviolet radiation.

Koyuncu discovered this when she infected isolated axons with a small number of virus particles, which would normally travel to the cell bodies and be silenced, while simultaneously exposing the cell bodies to a large number of inactivated virus particles that have been dosed with ultraviolet radiation (UV).

Titan's atmosphere is full of methane, which should react with ultraviolet radiation from the sun to produce liquid ethane.

Every instrument lowered into the borehole is sanitized in an enclosed laboratory and packed in plastic containing hydrogen peroxide solution before being delivered to the drilling deck, where it can be treated again with ultraviolet radiation.

The resulting plastic can be programmed with ultraviolet radiation to assume any permanent shape, and it can switch back to that shape even after being deformed by more than 100 %, the team reports in the 30 January issue of the Proceedings of the National Academy of Sciences.

Not exact matches

Our best guess is that the lower flux of ultraviolet radiation during the winter, along with the sun - blocking effect of the ring shadows on the winter hemisphere, reduces the production of the overlying haze.

With the southern sun beating down through clear waters, tropical corals need something to protect their delicate tissues from damaging doses of ultraviolet (UV) radiation.

Testing showed their materials were biocompatible, stood up well in heat and light, and absorbed both ultraviolet A and ultraviolet B radiation with high efficiency.

And while ozone high in the atmosphere helps shield Earth from the sun's ultraviolet radiation, at ground level, it mixes with fine particulates to form breath - choking smog.

Next they blasted the ices with harsh ultraviolet (UV) radiation.

Worldwide, as water temperatures rise and ponds dry, exposing amphibians and their eggs to ultraviolet radiation and disease, a third of those species are threatened with extinction.

Ultraviolet light from early, blueish stars (illustrated) interacted with hydrogen gas, causing it to absorb background radiation, and creating a signature scientists have now detected.

While lower - energy ultraviolet radiation breaks up water molecules — a process called photodissociation — ultraviolet rays with more energy (XUV radiation) and X-rays heat the upper atmosphere of a planet, which allows the products of photodissociation, hydrogen and oxygen, to escape.

Although Proxima Centauri's dimness provides the planet with a balmy climate, the star is prone to outbursts of harsh X-ray and ultraviolet radiation, which could damage any chance of life on the planet — X-rays hit the surface 400 times more often than those from the sun pummel Earth.

They can also be used for biological labeling because of their low toxicity, chemical stability, and intense luminescence when excited by near - IR radiation, which can penetrate tissue much better than higher energy radiation such as ultraviolet, as is often required with quantum dot labels.

Researchers have offered a number of explanations for the die - off: attacks of parasites, exposure to radiation or ultraviolet light, fungal infections, climate change, habitat loss, competition with exotic species, and pesticides.

In the malignant tissue, they found up to 1500 genes with mutations — a level higher than has been found for either lung cancer in smokers or skin cancer in patients with heavy exposure to ultraviolet radiation.

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.

It's a problem health officials have long tried to combat with everything from ultraviolet radiation and dust suppression to disinfectant vapors and antibiotics.

Such a brief, violent generation of stars significantly alters the surrounding environment with blasts of ultraviolet radiation and charged particles.

This finding is counterintuitive because higher - mass stars flood their planetary systems with energetic ultraviolet radiation that should destroy the carbon monoxide gas lingering in their debris disks.

It is possible that this handedness is produced by the interaction of ultraviolet radiation with icebound organic molecules in a vacuum.

The team concluded that the resulting drastic fluctuations in pH and ultraviolet radiation, combined with an overall temperature increase from greenhouse gas emissions, could have contributed to the end - Permian mass extinction on land.

In particular, photoelectron spectroscopy with extreme ultraviolet (XUV) radiation is a powerful method to probe the electron density in a valence shell of a molecular system.

As scientists widely recognize, paler complexions are a genetic adjustment to low light: People with dark skin have trouble manufacturing vitamin D from ultraviolet radiation in northern latitudes, which makes them more susceptible to serious bone deformities.

Ultraviolet radiation spices things up as well: It heats the grains and breaks up some of the molecules into reactive fragments, which in turn bond with other fragments to form new kinds of molecules.

Here, the bright orange lanes have been whittled away by ultraviolet radiation from the star, turning them into knots with cometlike tails.

Keep in mind that extremely energetic stars (those of types O through A) will blast their planets with high doses of ultraviolet radiation, which is detrimental to the evolution of life.

This discovery refutes existing theories, indicating that ultraviolet radiation from the star would destroy molecular gas and dust, and bringing the first direct detection of ionized gas wind along with a supersonic jet and an accretion disk.

It has also been proposed that ultraviolet (UV) radiation, which varies more than other solar irradiance wavelengths, could amplify the solar influence on the global climate through interactions with the stratosphere and atmospheric ozone.

However, most of these earlier findings were also correlated with fair skin, well known to accompany vulnerability to the damaging effects of ultraviolet radiation in sunlight.

In 2004, Schulze - Makuch and his colleagues announced their speculations that such microbes may survive in Venusian clouds with the help of molecular rings of sulphur to shelter from the Sun's ultraviolet (UV) radiation as Venus does not have a protective layer of ozone in its atmosphere.

Studies suggest that higher levels of ultraviolet radiation are associated with a lower risk of pancreatic cancer.

Older adults, people with dark skin, and people exposed to insufficient ultraviolet band radiation (i.e., sunlight).

That may be technically true: About 90 % of nonmelanoma skin cancers are associated with exposure to ultraviolet radiation, according to the nonprofit Skin Cancer Foundation — and it's clear that most people spend more time outdoors than they do in tanning beds.

In fact, exposure to ultraviolet light (UVA and UVB) accounts for 90 % of the symptoms associated with photoaging, which refers to the damage that is done to the skin from prolonged exposure to UV radiation.

Ultraviolet radiation and high altitude increase the severity of the disease; therefore, dogs living at high altitudes and very sunny areas are often more severely affected with the disease that is more difficult to control.

[9] Any intact lava tube on the Moon could serve as a shelter from the severe environment of the lunar surface, with its frequent meteorite impacts, high - energy ultraviolet radiation and energetic particles, and extreme diurnal temperature variations.

The Rabbs» tree frog is just the latest victim in a growing global wave of amphibian die - offs, with a host of factors in play, from land clearing and ultraviolet radiation to pollution and climate shifts.

The cell also overcomes some of the major problems with current solar tech like wear out or damage from high heat that comes from the absorption of great amounts of ultraviolet and infrared radiation that can't actually be turned into electricity due to a narrow band gap (the wavelength of light that can effectively be used to generate electricity).

Or: «Sunlight's composition at ground level, per square meter, with the sun at the zenith, is about 527 watts of infrared radiation, 445 watts of visible light, and 32 watts of ultraviolet radiation.»

And if you go to wiki, sunlight: http://en.wikipedia.org/wiki/Sunlight You find this graph: And wiki says, «Sunlight's composition at ground level, per square meter, with the sun at the zenith, is about 527 watts of infrared radiation, 445 watts of visible light, and 32 watts of ultraviolet radiation.»

Claims of increases in skin cancer failed to take into account increase in life expectancy or such anomalies as the lowest levels of skin cancer occurred in Colorado, the state with the highest levels of ultraviolet radiation due to altitude.

«Sunlight's composition at ground level, per square meter, with the sun at the zenith, is about 527 watts of infrared radiation, 445 watts of visible light, and 32 watts of ultraviolet radiation.»

The pattern of temperature increase with height in the stratosphere is the result of solar heating as ultraviolet radiation in the wavelength range of 0.200 to 0.242 micrometre dissociates diatomic oxygen (O2).

sunlight's composition at ground level, per square meter, with the sun at the zenith, is about 527 watts of infrared radiation, 445 watts of visible light, and 32 watts of ultraviolet radiation.

Section 1 contains five subsections with results on 27 - day response of low - latitude ionosphere to solar extreme - ultraviolet (EUV) radiation, response to the recurrent geomagnetic storms, long - term trends in the upper atmosphere, latitudinal dependence of total electron content on EUV changes, and statistical analysis of ionospheric behavior during prolonged period of solar activity.

Low solar activity sees the atmosphere above the South Pole cool both directly with less solar radiant energy and as reduced ozone warming by solar ultraviolet radiation.

A rooftop is an extreme environment with strong and variable wind patterns and little or no protection from the sun's intense heat and ultraviolet radiation.

It has also been proposed that ultraviolet (UV) radiation, which varies more than other solar irradiance wavelengths, could amplify the solar influence on the global climate through interactions with the stratosphere and atmospheric ozone.