Risk factors for cataract include family history, having diabetes, smoking, extensive exposure to sunlight, serious eye injury or inflammation, and prolonged use of steroids, especially combined use of oral and inhaled steroids.
In addition to extensive exposure to sunlight and skin diseases, long term exposure to environmental or occupational carcinogens such as polycyclic aromatic hydrocarbons (PAHs) have been commonly associated with skin cancer.
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Skin cancers and lymphomas are more common than in the general population and thus, extensive exposure to the sunlight and smoking should be avoided.
A copolymer of ethylene with some carbon monoxide contains ketone groups that absorb sufficient energy from sunlight to cause extensive scissioning of the polymer chain.
In the 21st century, buildings such as 90 West Street have been renovated as upmarket housing, partially because of their extensive windows and access to sunlight.
Viewed from above, the countryside is an extensive patchwork of agricultural ponds, glinting in the sunlight.
When such cover is extensive, as in the fall of 1971, the white surface reflects sunlight back into space and there is a reduction in heating of the atmosphere.
Therefore, how to effectively utilize sunlight is the most challenging subject for the extensive application of TiO2 as a photocatalyst.
The catalysts are placed directly on the silicon, so no extensive wiring is needed, as in standard photovoltaic cells, to convert sunlight into current and break down the water into hydrogen and oxygen.
