Sentences with phrase «of ultraviolet radiation»

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

This makes it perfect for the DIY who is concerned about the harmful effects of ultraviolet radiation on the skin.

Vitamin E also helps in reducing the harmful effects of ultraviolet radiation on the skin.

It starts in the top layer of the skin and usually develops where skin has been regularly exposed to the sun and other forms of ultraviolet radiation.

In the stratosphere is it useful, as it blocks much of the ultraviolet radiation.

Some research has suggested that certain supplements can help decrease the effects of ultraviolet radiation on the skin.

According to the study published today, dust and molecular gas can survive the destructive effects of ultraviolet radiation that accompanies the birth of a massive star.

For detections of the biomarker ozone, the team confirms that there appears to be a «Goldilocks» effect when it comes to the amount of ultraviolet radiation from the star to which the planet is exposed.

They were likely well adapted to lower and more variable levels of ultraviolet radiation from the sun than the new human arrivals from Africa were accustomed to.

In 2013 in Astrobiology, Schuerger and colleagues published a list of more than a dozen factors that microbes on Mars would have to overcome, including a lot of ultraviolet radiation from the sun; extreme dryness, low pressure and freezing temperatures; and high levels of salts, oxidants and heavy metals in Martian soils.

Scientists attributed both phenomena to pesticides, parasites, and increasing exposure — due to ozone loss — to a type of ultraviolet radiation called UV - B.

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.

The observed amount of ultraviolet radiation emitted by TRAPPIST - 1 indeed suggests that the planets could have lost gigantic amounts of water over the course of their history.

In their experiments, the geomicrobiologists subjected the bacteria to high doses of ultraviolet radiation — either in the presence or the absence of the iron minerals the bacteria themselves produce.

Despite 70 years of trying, scientists still can not fully explain how a bubble of air in water focuses acoustic energy a trillionfold to spit out picosecond bursts of ultraviolet radiation.

Author Professor Robert G. V. Baker from the School of Environmental Studies, University of New England, Australia, says, «The interaction between the directionality in the Sun's and Earth's magnetic fields, the incidence of ultraviolet radiation over the tropical Pacific, and changes in sea surface temperatures with cloud cover — could all contribute to an explanation of substantial changes in the SOI from solar cycle fluctuations.

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

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.

Scientists at Newcastle University have documented for the first time the DNA damage which can occur to skin across the full range of ultraviolet radiation from the sun providing an invaluable tool for sun - protection and the manufacturers of sunscreen.

Following up on the discovery, an international team of scientists led by the Swiss astronomer Vincent Bourrier from the Observatoire de l'Université de Genève, used the Space Telescope Imaging Spectrograph (STIS) on the NASA / ESA Hubble Space Telescope to study the amount of ultraviolet radiation received by the individual planets of the system.

By reducing the amount of interstellar gas and dust reaching alien worlds, astrospheres could still affect cloud cover, surface temperatures, the intensity of ultraviolet radiation and more.

This, in turn, means that the universe's diffuse background of ultraviolet radiation plays a smaller role in the ionization process.

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

The committee's list of suggested projects includes studies of the effects on plankton and krill of the ultraviolet radiation that is streaming through the Antarctic ozone hole.

Higher levels of ultraviolet radiation penetrating the Earth's dwindling ozone layer may be driving some species of frogs to extinction, according to researchers from Oregon.

He says the combination of ultraviolet radiation and exposure to certain plants, including citrus fruits like lemons and limes, may result in a condition called phytophotodermatitis, which causes a rash followed by hyperpigmentation.

Rapid reversals of Earth's magnetic field 550 million years ago destroyed a large part of the ozone layer and let in a flood of ultraviolet radiation, devastating the unusual creatures of the so - called Ediacaran Period and triggering an evolutionary flight from light that led to the Cambrian explosion of animal groups.

Although long - term melanoma survivors were more likely to report healthier levels of ultraviolet radiation exposure and sun protection behaviors than controls, some still reported indoor tanning or intentionally seeking sun to tan.

The star has a mass that is six to eight times greater than Sol's (see Petr Harmanec, 1988; and James Kaler), 14.4 (+ / - 0.4, polar) to 24.0 (+ / - 0.8, equatorial) times its diameter (ESO; and Domicano de Souza et al, 2003), and 1,070 times its visual luminosity and at least 2,900 to 5,400 times its bolometric luminosity (depending on the estimate of ultraviolet radiation).

But the study did control for several factors, including the number of severe sunburns participants had ever had, their number of moles, and the average amount of ultraviolet radiation where they lived.

In many Mediterranean climates there is a strong diurnal character to daily temperatures in the warm summer months, due to the great loss of ultraviolet radiation from the sun at night.

Companies turned production of sun blockers into a multibillion - dollar industry even though their product didn't, until a few years ago, deal with those portions of ultraviolet radiation that are harmful to the skin.

«They emit powerful winds and a lot of ultraviolet radiation.»

«Sunscreens using zinc oxide and titanium dioxide tend to rate well in our analysis: They are stable in sunlight, offer a good balance between protection from the two types of ultraviolet radiation — UVA and UVB — and don't often contain potentially harmful additives,» EWG said in its study.

Indeed, the design and construction of green roofs and buildings demands an extraordinary range of technical expertise, from understanding storm water hydrology or the flux of ultraviolet radiation to constructing an effective waterproofing system that allows rain to be retained in rooftop soils.

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.

Habitable - zone planets around M dwarfs are subject to erratic bursts of ultraviolet radiation, which would destroy biosignature molecules in an atmosphere.

Washington State University researchers have mapped the damage of ultraviolet radiation on individual units of DNA, opening a new avenue in the search for how sunlight causes skin cancer and what might be done to prevent it.

The new research shows that UV - B radiation — one of the most damaging forms of ultraviolet radiation — kills the eggs of some species but leaves others unharmed.

Massive stars emit a large amount of ultraviolet radiation that destroys the molecules and dust surrounding the star and creates ionized gas, which in turn impedes the star's growth process.

A simulation suggests that the vapour and salt thrown up by the impact could damage the ozone layer, leading to record levels of ultraviolet radiation that could threaten human civilisation.

He also investigates the effects of ultraviolet radiation on skin and the pathologic basis of skin diseases.

Reports indicate the Galaxy Note 4 may also include an ultraviolet sensor, which would be able to measure the levels of ultraviolet radiation from the sun and offer suggestions for users to protect themselves.