强烈的阳光也是加速皮肤衰老和退化的催化剂哦

不过当然我不是提倡大家去做宅男宅女，只是叫大家尽量避免在中午12点-下午4点这段时间里长时间暴露在阳光下，而且要注意抹防晒霜。（汗，其实我自己一年也涂不了几次）

阳光中的UV对皮肤细胞DNA造成的损害是导致皮肤癌的第一大因素

你说说, 俺要是瞎编一个说这人滑雪老是下午的时候滑一面山头, 会不会有人信?

好可怕， 都不敢多看这张照片。

股沟了一下
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AbstractBACKGROUND:

There is increasing knowledge about the hazards of solar and ultraviolet (UV) radiation to humans. Although people spend a significant time in cars, data on UV exposure during traveling are lacking. The aim of this study was to obtain basic information on personal UV exposure in cars.

METHODS:

UV transmission of car glass samples, windscreen, side and back windows and sunroof, was determined. UV exposure of passengers was evaluated in seven German middle-class cars, fitted with three different types of car windows. UV doses were measured with open or closed windows/sunroof of Mercedes-Benz E 220 T, E 320, and S 500, and in an open convertible car (Mercedes-Benz CLK). Bacillus subtilis spore film dosimeters (Viospor) were attached to the front, vertex, cheeks, upper arms, forearms and thighs of 'adult' and 'child' dummies.

RESULTS:

UV wavelengths longer than >335 nm were transmitted through car windows, and UV irradiation >380 nm was transmitted through compound glass windscreens. There was some variation in the spectral transmission of side windows according to the type of glass. On the arms, UV exposure was 3-4% of ambient radiation when the car windows were shut, and 25-31% of ambient radiation when the windows were open. In the open convertible car, the relative personal doses reached 62% of ambient radiation.

CONCLUSIONS:

The car glass types examined offer substantial protection against short-wave UV radiation. Professional drivers should keep car windows closed on sunny days to reduce occupational UV exposure. In individuals with polymorphic light eruption, produced by long-wave UVA, additional protection by plastic films, clothes or sunscreens appears necessary.

smellfish 发表于 2012-6-4 08:58
多谢提醒 ：-）顺便问一下，主要的伤害是不是来自紫外线啊？开车隔着普通车窗玻璃， 哪怕是透明的，是不是 ...

普通透明玻璃和直接照射相差不是很大，不能挡住所有紫外线.

多谢提醒 ：-）顺便问一下，主要的伤害是不是来自紫外线啊？开车隔着普通车窗玻璃， 哪怕是透明的，是不是大部分紫外线都无法通过？

是男的还是女的?

thanks！！真是一目了然啊~