Ultraviolet

Since, it is unstable gas quickly decomposes, the half-life of the ozone is about 20-30 minutes at 20 °C (Khadre et al., 2001), and hence, it should be generated onsite for immediate use. Naturally, ozone is formed in the stratosphere by high ultraviolet radiations sparks, apart from that for commercial use it canbe generate by employing electrical discharge (high-voltage electrical arc), electrochemical and radiation methods. Among these methods electrical discharge method is widely used as…

the steroid rings is broken. The structural difference between vitamin D2 and vitamin D3 is in their side chains25. The side chain of D2 contains a double bond between carbon 22 and 23, and a methyl group on carbon 24. Vitamin D3 is produced by ultraviolet irradiation (UV) of its precursor 7-dehydocholesterol. This molecule occurs naturally in the skin of animal and milk. Vitamin D2 is a derivative of ergosterol, which is produced by some organisms of phytoplankton, invertebrates, yeast and…

During the exam, he or she may use ultraviolet light to help determine the extent of the infection. In some cases, a skin sample may be taken by scraping the rash. This sample will then be looked at under a microscope to check for yeast overgrowth. TREATMENT Treatment for tinea versicolor…

destroying the wildlife around it. No water equals no fish. And in many states in the U.S., collecting rainwater is illegal. People are not even allowed to use water that freely falls from the sky. There have been solutions towards having clean water. UltraViolet light kills bacteria in water. This means there can be plants where water can be sanitized simply, or this could even be done at home. And as it turns out, in India, a person can receive 10 liters of water a day for only $2 per year.…

Skin is the most apparent and the biggest organ on the human body. Nina Jablonski the speaker, conveys the theme about how skin color is that specific color because of environmental climate factors. She communicates that the region that the person lives in will have a participating factor in what color their skin. Nina identifies that we all started off in an homogeneous community and have evolved into our diversity that is projected today. Nina focuses her evaluation with 2 main explorers…

Smoking is directly linked to increases in cataracts, optic nerve problems, and macular degeneration. The sooner your loved one quits smoking the greater the chances that their eyes and vision will be protected. Sunglasses. Ultraviolet light is very hard on the eyes and can lead to an increased risk of cataracts and macular degeneration. Choosing sunglasses that are rated to block UVA and UVB rays will help protect your eyes. Some seniors choose to wear wrap-around sunglasses…

1.Magnetic resonance imaging uses the property of Nuclear Magnetic Resonance to take the image of nucleus has magnetization of its own and in MRI scanner patient is placed between a large magnet. This allows nucleus of atoms to align themselves according to their magnetization which leads to the production of magnetic field which is noticed by MRI scanner. This is how magnetic resonance imaging exploits the magnetics properties of the nucleus. 2. Sound waves are longitudinal waves and they…

Arabidopsis cell wall mutants INTRODUCTION & AIMS Plant cell walls are highly dynamic structure which is made up of polysaccharide such as cellulose. In plant cell, cellulose is synthesised at the plasma membrane by the enzyme cellulose synthase (CesA) which forms rosette structure with 18 CesA proteins in total. Mutating any of these CesA proteins is thought to interfere with the normal production of cellulose in plant. As cellulose is an important component of cell wall and is essential for…

Nina Jablonski, a biological anthropologist spoke of “how human skin evolved, particularly as an adaption to ultraviolet radiation” (The Evolution of Skin). She also answered many other questions relating to skin. Basically, the skin has a certain relation to ultraviolet radiation. Lower levels of melanin were adapted to decrease ultraviolet radiation. In the past medical history, it was best to determine if the patient noticed “problems such as jaundice (liver disease), delayed…

Synopsis Cineplex is one of Canada’s leading entertainment companies. They serve metropolitan cities and midsize markets through their nine theater brand offerings. Susan Mandryk and her team are considering two options to combat the continued reduction in theatrical release windows that Cineplex is experiencing. The first is to extend Cineplex’s core business with premium offerings. The second is to vertically integrate into the digital movie download market. Cineplex has partnered with SCENE…