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UV light as a long period to open preschool level
a germicidal bulb tanning nursery class children
some light with the sun tan you can also scald
□ Times correspondent Jiang Dawei Wang Yanwen txt
intern journalist Lin Yan Ting Xu Bingbing photo charting reporter Chunyan
sweet while her daughter (a pseudonym) gradually darkening of the skin, the public Luk did not idea above all, but once connected to the nursery child, she was stunned eyes, and sweet because of the same class of a dozen children, all of them have even come behind the same as equitable Africa, but likewise a more than a black, meantime other classes are all the kid white matte finish, how is this going?
not off the germicidal lamp
tanning entire class of children
Luk came with a sweet, Hangzhou Third People's Hospital, the hospital Song Weimin, deputy director of dermatology see sweet to know thatthis is UV tanning. Then, sweet are the parents of the students base the melody after different beneath the leadership of the people, and sweet always the same diagnosis.
Luk contacted several other children's parents, onward with where to find her daughter in a kindergarten in Hangzhou, but park officials also felt very puzzled, because every day from 8 am to 4 pm, in addition to the morning will go outside to do 20 minutes of morning exercise, most of the time children spent in the classroom, how it will be a UV tanning?
all parents at a wastage, but the kindergarten educator inadvertently revealed 1 of the details, so that people find the culprit Song - 1 installed in the classrooms of UV light.
in consensus with the requirements of kindergarten classrooms in the UV germicidal lamp is the time every day to open an hour hardly ever, but because the kindergarten teacher is not explicit on the operational processes, resulting in the classroom has been driving a UV germicidal lamp, Over time, excess UV will be children's skin is tanned.
like night-clubbing prettiness
tan spotlights at night is a
summer, and how the maximum effective sun once another chance a topic of concern. However, 3 hospital dermatology clinic in Hangzhou some cases it was signified that, to tan alternatively sunburn of the skin is not only the sun, there are a variety of indoor lighting, and even some people are tanned in the nightfall.
cases, including a young girl, ordinarily during the daytime and disburse special attention to the sun, but the skin was tanned, and a beyond inquiries, to understand she loves to go to nightclubs, bars are a kind of high-power spotlights unlocked UV tanning.
In appending, regular visits to the Song of the people here, there are some female television hook, they finish every recorded agenda, the skin began to fill with, gradually increasing the skin black, increasingly aggravate, the offender is the laboratory where they face everyday exposure in a variety of lighting.
two bands of ultraviolet light
most probable to damage the skin
light tan or sunburn Why can people? First you got took off ultraviolet rays.
agent adviser of the Institute of Optics, Zhejiang University, Professor Lu Xuanhui introduction, namely the electromagnetic spectrum in the UV wavelengths from 100nm (nm) to 400nm radiation in common, of which wavelength 100nm apt 200nm because the vacuum ultraviolet (UV-D) , wavelength 200nm to 280nm for the short-wave ultraviolet (UV-C), wavelength 280nm to 315nm for ultraviolet B (UV-B), wavelength 315nm to 400nm for the long-wave ultraviolet (UV-A).
ultraviolet wavelength and vigor is inversely proportional. The longer the wavelength, the stronger the ability to perceive the peel. The shorter the wavelength, the energy is stronger, the more accessible guide to skin lesions.
UV-D can not be effectively transmitted in the atmosphere, while the shorter wavelength UV-C is about absorbed by the ozone floor, so the normal brightness in the ultraviolet, effectively UV-A and UV-B-based which UV-A accounted for about 98.1%, UV-B accounted for 1.1%.
can not penetrate the epidermis, when the higher energy UV-B effects on the skin for a long time, the light can happen dermatitis, skin erythema, itching, blisters, edema, and excessive ultraviolet radiation, can cause skin cancer. , ultraviolet germicidal lamp is usually restricted to the wavelength of 253.7nm, this wavelength is the most energy UV-C, children were tanning is not surprising.
Those high-power metal halide, released in UVA and sunlight are the same as the release of UV harm to skin. , stadium, constantly using some of the muscular ultraviolet radiation of the lamp, the ultraviolet radiation of wavelength approximately 300nm to 400nm, are the long-wave ultraviolet radiation on human skin is relatively large.
no small impact.
lamps UV radiation strength
no safety criterion for quantification
Although the release of UV light can also burn people tan, but Professor Lu Xuanhui said, There is no country for safety lamps UV radiation strength of quantitative criteria, but the light level of UV damage on the human body, relying on many ingredients, such as light performance, with the body's distance, exposure time, and so on.
in our daily adjoin with the lamps, in addition to metal halide UV lamps, UV lamps and other insect-catching special ultraviolet lamp radiation intensity greater than the mediocre incandescent lamp, and no ultraviolet light.
and fluorescent lamps and energy-saving light-emitting principle although the radiation of peppery electrons via the electrode, excited mercury atoms emit ultraviolet light, but ultraviolet light via the phosphor coating inside the lamp into apparent light, the emitted only trace wavelength UV-A chapter of the ultraviolet range, nor will it cause too much clash on the people body.
City's Hospital, said Song Weimin, deputy director of dermatology, general long-term UV radiation at work or more lamps from the lamp also close to the emulating people the opportunity to ache the skin will be relatively large, such as shopping malls salesperson, motel server, television anchor and other teams, and the general public at all times they linger under the lights not take too long, or not standing instantly under the direct or close contact with light, then do not need to anxiety too many.
how to combat UV
like the huge S drew for once every quarterutes on sunscreen?
City three experts: this notion is value learning
sun has ultraviolet rays, there are also some UV light, the face of life everywhere in the ultraviolet, how do we defend their skin? Is renowned talents like Da S in
City's Hospital, said Song Weimin, deputy director of dermatology, although painted once every 15 minutes on some sunscreen and unrealistic exaggeration, but this motif is worth promoting, because UV awareness of the country's air defense is still relatively is penniless.
excessive exposure to ultraviolet light
easily lead to skin diseases
According to statistics, Hangzhou's Hospital analyzed with skin malignancy each year nearly 1,000 people, and this figure increased year along year.
occasioned extravagant exposure to ultraviolet light, and all related.
.
physical sunscreen more shifty
twenty-three hours up period
In addition to using UV umbrellas and clothing, the Song Zhuren that the proper use of sunscreen products is also quite essential protective amounts and these patents are not a woman, males should also follow suit.
sunscreen clog pores.
other is a chemical sunscreen, use of such sunscreens, skin will feel relatively more comfortable, merely the results will be compared and physical sunscreen a lot less, and use of chemical sunscreens, the usual semi- hours behind the order from the results, otherwise it will not have any effect opposition UV and sun.
As for the big S painted once every quarterutes on the practice of sunscreen, Song Zhuren that however some magnification, but numerous people wipe sunscreen morn and then a full day of practice is not wiped more pleasing, appropriate use of sunscreen productions frequency is every two or three hours to re-apply according to the environment where time, so as to serve as an effective protective effect.
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发表于 2011-11-19 12:45
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发表于 2011-10-13 16:52
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