ultraviolet rays

When bombarded with ultraviolet rays from the sun, the lettuce leaf creates UV-absorbing polyphenolic compounds in its outer layer of cells.

The thermosphere, which blocks harmful ultraviolet rays, expands and contracts regularly due to the sun's activities.

It is like an umbrella, blocking the sun's ultraviolet rays from.

Ozone is a gas molecule made up of three oxygen atoms best known for shielding the earth from the sun's dangerous ultraviolet rays.

Also, should African-Americans use sunscreen since it blocks the ultraviolet rays needed for the body to make vitamin D?

Asthmatics, at least, could benefit from measured doses of ultraviolet rays, according to scientists.

The boys could not be exposed to any ultraviolet rays, or they ran the risk of almost certain skin cancer.

Sunburn is due to overexposure of the skin to ultraviolet rays of the sun or a sun lamp.

The sun's ultra' ultraviolet rays react with skin cell cells to produce vitamin D.

Too much exposure to the sun's ultraviolet rays can cause skin cancer.

Besides, the cap is covered with a special coat to screen sunlight, rain and even the ultraviolet rays.

It takes more than sunscreen to keep the sun's ultraviolet rays from harming your skin.

The sun's ultraviolet rays react with skin cells to produce vitamin D.

Harmful ultraviolet rays from the sun are directly linked to melanoma and other forms of skin cancer.

Because ultraviolet rays also trigger the synthesis of vitamin D in the skin, sunlight is an important source of the vitamin.

Researchers believe that these growths are caused in part by long-term exposure to the ultraviolet rays contained in sunlight.

Ozone can be beneficial-the ozone layer in the stratosphere helps protect us from harmful ultraviolet rays.

The strong ultraviolet rays of the plateau sun shone on their heads as they walked towards a small town called Gaomiaozi.

The hole in the ozone layer, which protects Earth from the Sun's ultraviolet rays, was first detected nearly 30 years ago.

the sun's heat and ultraviolet rays will kill anything inside.

For instance, plastics have a known weakness to ultraviolet rays from the sun, and so long exposure might represent an issue.

Excessive exposure to the sun's ultraviolet rays, already blamed for skin cancers, can also lead to cataracts, experts say.

as ultraviolet rays Can cause sunburn and even skin Cancer, a hippo's sweat therefore protects its skin like a sunscreen.

The ionization in the upper atmosphere is caused by ultraviolet rays form the sun.

When cells become genetically damaged - such as the DNA damage caused by the sun's ultraviolet rays - they're supposed to self-destruct.

Excessive ultraviolet rays will kill the microorganisms in water, resulting in the extinction of certain species.

Calculations suggest, for instance, that in the nucleus of the isotope thorium-229 is a transition that should emit ultraviolet rays.

Methods By using complex mutagenesis of LiCl and ultraviolet rays, we deal with the simple spore suspension.

features Using aluminum thermal design, no ultraviolet rays, no radio-frequency interference, qualified registation of design.

In addition to reflecting harmful ultraviolet rays, the ceramic fibers also block infrared rays5 that heat the body.

Lastly, sepia-toned melanin, created in response to ultraviolet rays, appears black in large amounts.

And pollution might also affect the ozone layer, which protects the planet from harmful ultraviolet rays.

CAUSES: Failure to maintain the skin under the day and polluted environment or exposure to the irradiation of ultraviolet rays.

Summer Protect head to avoid shine direction prevent ultraviolet rays to hurt hair and scalp.

Both sets of test animals were exposed to levels of ultraviolet rays that an average Australian receives.

Objective To observe the germicidal efficacy of ultraviolet rays in water dispenser.

Objective To know the germicidal efficacy of tableware disinfector with ozone, ultraviolet rays and heat as the germicidal factors.

Insects can see ultraviolet rays which are invisible to us, and some of them can even see Xrays.

Melanin protects from ultraviolet rays so victims run a much higher risk of skin cancer.

The ultraviolet rays react with skin cells to produce the vitamin.

The ozone layer protects life on Earth from harmful ultraviolet rays.

Ozone protects life on Earth from damaging ultraviolet rays.

Model ZQJ-254 ultraviolet Intensity meter can measure the radiation dose of ultraviolet rays in the various enviroment.

The stratospheric ozone layer protects the earth's surface from damaging ultraviolet rays that can cause skin cancer.

A new detection system for ultraviolet rays is introduced.

The ozonosphere defends us from the harm of ultraviolet rays.

The craft's exterior features a layer of TiO2, which reacts with ultraviolet rays to clean the water.

The ultraviolet rays are very strong at the beach. If you want to swim, you must prepare well to prevent sun burn.

What are infrared and ultraviolet rays?

Jude Biao about 20 kilometers there is a high-altitude ozone layer, can absorb some of the harmful ultraviolet rays.

Tanning beds use ultraviolet rays that can severe sunburn.

First hand car decorations, such as: auto foil to cut off ultraviolet rays, heat insulation.

The ozone layer lies about 9-19 miles above the earth, filtering harmful ultraviolet rays that can cause skin cancer.

Gucci: Sure. They can protect your eyes from ultraviolet rays.

S. . . Coated with olive skin and capable of withstanding ultraviolet rays and prevent skin cancer;

Design of a Digital Instrument for Ultraviolet Rays Measurement

Diagnostic criteria and principles of management of occupational acute electric ophthalmia (Keratoconjunctivitis caused by ultraviolet rays)

Effects of Ozone and Formaldehyde Plus Ultraviolet Rays on the Air Disinfection

Relationship between pterygium onset and ultraviolet rays exposure time

The invention provides an anti-glare purple glass for adsorbing ultraviolet rays strongly;

shields the earth from the sun's ultraviolet rays

Effects of Ultraviolet Rays on Phenotype Variation and Development of Drosophila melanogaster

Study on inactivation of virus in plasma by combination of sodium oleate and ultraviolet rays

Measure the Amount of Phenol in the Ear Drops by Spectrometer with Ultraviolet Rays

Analysis on influence factors of bactericidal effect of ultraviolet rays

Application of ultraviolet rays disinfectant technology in the disposal of water

physiological effects of ultraviolet rays

Filters for ultraviolet rays, for photography

it can absorb ultraviolet rays, while reflect infrared rays, so eye fatigue can be greatly reduced;

The role of ultraviolet rays

Curative effect obseravtion of 8 cases of 1% dicaine solution in treating ophthalmia caused by ultraviolet rays