Effects of UV Rays Agnes Berisha Baker College of Auburn Hills July 8‚ 2010 CONFIRMATION OF AUTHORSHIP: I certify that I am the author of this paper and any assistance I received in its preparation is fully acknowledged and disclosed in the paper. I have also cited any sources from which I used data‚ ideas‚ or words‚ either quoted directly or paraphrased. I also certified that this paper was prepared by me specifically for this course. Signature: ________________________________________
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Meteorology 11 October 2013 Harmful UV Rays and Their Differences As we all know being over exposed to the sun and its harmful rays can be very dangerous for your skin‚ and may lead to skin cancer‚ but there are some UV rays that are more dangerous than others. Coming from the skin cancer stand point the most dangerous rays are UVB rays‚ they are the main cause of most skin cancers. Although UVB rays are the most harmful to our skin it has the second shortest wavelength coming in at 290-320
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(Tarver‚ 2012) Exposure to UV radiation is the leading cause of most skin cancers as it induces DNA damage in skin cells. The effects of UV radiation can be classified based on the amount of exposure as acute or chronic. Acute side effects include sunburns and chronic effects can be mutagenic and also increase aging in humans. (Pacholczyk‚ 2015) The effects of UV radiation are significant
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We hypothesized that the amount of UV radiation exposed has a negative correlation with yeast genetic stability‚ which ultimately determines the number of yeast colonies. In this experiment‚ yeast cells were treated with UV radiation‚ protected by photoprotective agents with different strength (in ascending order: Sunscreen #2‚ #1‚ aluminium foil). After letting it grow for seven days at 37 degrees‚ some grown colonies were counted to determine the effectiveness of photoprotective agents. After comparing
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Mutagenic Effects of UV Light Name: sharon reakae INTRODUCTION A mutation is a permanent change in the DNA sequence of a gene. Mutation rates are usually very low but there are factors that can increase the mutation rates. These factors are referred to as mutagens and conclude a range of physic-chemical agents. UV light is a mutagen that affects all living things and has an adverse effect on the replication process of DNA within cells(.Leonard‚2002) In this experiment we examine the effects of
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Technical Specification Sheet For UV-Spectrophotometer | | Wavelength range | 190 to 1‚100 nm | Spectral bandwidth | 1 nm (190 to 1‚100 nm)/ variable Low stray light < 0.12%T (220 nm‚ NaI 340nm‚ NaNO2>2.0 Abs) | Wavelength accuracy | ± 0.1 nm at D2 peak 656.1 nm‚ | | ± 0.3 nm for entire range | Reproducibility | ±0.1 nm | Resolution | 1 nm more than 6 wave lengths | Photometric system | Double beam optics | Photometric range | Absorbance: -4 to 4 Abs | | Transmittance:
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MWF 8:30-9:30 ULTRAVIOLET-VISIBLE SPECTROMETRY A diagram of the components of a typical spectrometer are shown in the following diagram. The functioning of this instrument is relatively straightforward. A beam of light from a visible and/or UV light source (colored red) is separated into its component wavelengths by a prism or diffraction grating. Each monochromatic (single wavelength) beam in turn is split into two equal intensity beams by a half-mirrored device. One beam‚ the sample beam
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White Ink Tattoo and UV Tattoo Academic English I: Essay I Herlan Wijaya (1701320762) Binus International University Tattoo one of the ancient arts that was firstly found by an accident. According to an article about History of Tattooing‚ tattoo was originally from “Someone with a small wound or gash happened to rub it with a dirty hand that was covered with soot or ash. Once the wound had healed‚ they realized that the skin had healed over the ash and that the mark became a permanent addition”
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Understanding UV radiation The sun sends out different types of radiation – visible light that we see as sunlight‚ infrared radiation felt as heat and UV radiation that we can’t see or feel. Are there different types of radiation in sunlight? Yes. The types of radiation include • visible light‚ which gives us the colours we see‚ • infrared radiation which gives us the warmth we feel‚ and • ultraviolet (UV) radiation. Except in extreme situations‚ neither visible light nor infrared radiation
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Ultraviolet rays most skin cancers are caused by too much exposure to the sun’s ultraviolet (UV) rays. The two types of UV rays that cause melanoma are UV-A and UV-B rays. UV-A rays Are fairly constant throughout the year‚ and contribute to aging and wrinkling of the skin. UV-B Rays‚ stronger than UV-A rays‚ are more intense in the summer months and are the most common cause of sunburn. The longer you are out in the sun‚ the more UV radiation you receive. A blistering sunburn at an early age can
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