Zinc oxide

Zinc oxide

Zinc oxide is an inorganic compound with the formula ZnO. ZnO is a white powder that is insoluble in water, and it is widely used as an additive in numerous materials and products including rubbers, plastics, ceramics, glass, cement, lubricants, paints, ointments, adhesives, sealants, pigments, foods (source of Zn nutrient), batteries, ferrites, fire retardants, and first-aid tapes. It occurs naturally as the mineral zincite, but most zinc oxide is produced synthetically. In materials science, ZnO is a wide-bandgap semiconductor of the II-VI semiconductor group (since oxygen was classed as an element of VIA group (the 6th main group, now referred to as 16th) of the periodic table and zinc, a transition metal, as a member of the IIB (2nd B), now 12th, group). The native doping of the semiconductor (due to oxygen vacancies or zinc interstitials) is n-type. This semiconductor has several favorable properties, including good transparency, high electron mobility, wide bandgap, and strong room-temperature luminescence. Those properties are used in emerging applications for transparent electrodes in liquid crystal displays, in energy-saving or heat-protecting windows, and in electronics as thin-film transistors and light-emitting diodes. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video

KID Song l How To Make Colors Spoon Ice Jelly Slime DIY Clay Play l kid songs

KID Song l How To Make Colors Spoon Ice Jelly Slime DIY Clay Play l kid songs

KID Song l How To Make Colors Spoon Ice Jelly DIY Jelly Clay Play l kid songs KID Song l How To Make Colors Spoon Ice Jelly DIY Jelly Clay Play l kid songs KID Song l How To Make Colors Spoon Ice Jelly DIY Jelly Clay Play l kid songs

Synthesis of Zinc Oxide Nanoparticles

Synthesis of Zinc Oxide Nanoparticles

Full activity can be found here: http://education.mrsec.wisc.edu/296.htm Zinc oxide quantum dot nanoparticles absorb UV light but are optically transparent making them useful as the active ingredient of sunscreens. The absorption wavelength is a function of particle size when the particles are small. This synthesis involves particle growth at 65°C; samples removed at longer times give larger particles. The cut-off wavelength from the absorption spectra can be used to estimate the particle size.

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Ninja Kid Run Free | Android App

Ninja Kid Run Free | Android App

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[Game] Extreme Car Driving Simulator | Android App

[Game] Extreme Car Driving Simulator | Android App

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10 Dangerous Animals Most Likely to Attack You!

10 Dangerous Animals Most Likely to Attack You!

Did you ever wondered which are the World's Most Dangerous Animals ? Take a look and let us know which one we've missed ! SUBSCRIBE for more videos: https://goo.gl/Mf7hR9 10. Panda bear The Panda bear measures 1.9 m long and 90 cm tall. They can weight around 160 kg (350 lb.) and they live between 20 to 30 years. It has a sesamoid 5 fingers They have a massive chomping muscle which can deliver a bite force of any carnivore. Its strong teeth and jaws are adapted to crush the trunks of the bamboo and reach its pulp. 9. African Bush Elephant They are one of the largest animals on earth, they weight around 10.4 tons and they can be up to 4 m tall. They have been known to be extremely aggressive and they even trample even rhinoceros easily. They live between 40 and 50 years in the wild because they don’t have natural enemies (Apart from man). They can reach 60 years. 8. African Lion The lion is the largest living feline next to the tiger. With powerful limbs, a strong jaw and eight-centimeter canine teeth, the lion can take on very large prey. The weight of adult lions generally varies between 160-260 kg in males and 120-182 kg in females; Lions tend to have a different size depending on the environment and the area they inhabit, which results in a great variety of registered weights. Lions are powerful animals that usually hunt in coordinated groups and besiege the chosen prey. They stalk the victim undetected, The attack is short and powerful, trying to catch the victim with a quick acceleration and a final jump. 7. Tiger Shark The species is found mainly in tropical and subtropical waters The body is quite corpulent, but it thinness sharply as it approaches the tail fin. The maximum weight verified was 1524 kg. The tiger shark is a super predator and has a reputation for swallowing anything that floats in the water, having found traces of garbage in its digestive system. 6. American Pit Bull Terrier They were used as fighting dogs until they were banned in 1976; These animals continue to suffer the violence and mistreatment of some breeders, who train them to fight. At present, in more than 200 counties of the United States it is a prohibited race. 5. Black Mamba The black mamba is a fast, restless and lethally poisonous creature that, when threatened, is very aggressive.For all this, the black mamba is considered without discussion the most lethal snake on the planet. Before the arrival of the specific antidote, the bite of this fearsome snake was lethal in 100% of the cases, usually in less than 20 minutes. 4. Hippos Hippos are a semi-aquatic animal that love water, which is why the Greeks called them "the horse of the river". They spend up to 16 hours a day submerged in rivers and lakes to maintain the temperature of their huge bodies under the warm African sun. Hippos also secrete an oily red substance, The liquid is actually a skin moisturizer and sunscreen that can also provide protection against germs. At sunset, the hippos leave the water and enter the land to graze. They can travel up to 10 kilometers in one night to consume 35 kilos of grass. Considering its enormous size, the intake of a hippopotamus is relatively low. The hippos weigh about 45 kilos at birth. Each female has only breeding every two years. 3. Saltwater Crocodile The average size of male adults is maintained between 4.3 and 5.2 m in length and between 400 and 1,000 kg of weight. Their enormous sharp teeth, their thick skin that allows them to resist the attack of the enemies and their incomparable force, turns them into one of the scariest predators of the animal territory. Its head is very large and in the neck area its thickness increases. The tail contains strong muscles that provide a lot of force when hitting. There are several cases of attacks of saltwater crocodiles to humans, the vast majority of them deadly. 2. Humans 1. Mosquito Mosquitoes, as the sources point out, continue to be one of the leading causes of life loss in the world. An estimated 725,000 people will be affected each year due to the diseases they transmit. The 2,500 species of known mosquitoes spread throughout the globe. So many victims, so much pain and so many losses cause a year that there are exclusive campaigns to warn of their danger.

Matemática Discreta - Unidades en Zn. Ej.1 - Jesús Soto

Matemática Discreta - Unidades en Zn. Ej.1 - Jesús Soto

Universidad Católica de Murcia (UCAM). Grado en Ingeniería Informática.

Naruto Shippuden Ultimate Ninja Storm Generations - Walkthrough Part 32 Series Finale Ending

Naruto Shippuden Ultimate Ninja Storm Generations - Walkthrough Part 32 Series Finale Ending

Naruto Shippuden Ultimate Ninja Storm Generations Walkthrough Part 1 Hatake Kakashi Let's Play PS3 XBOX 360 Let's Play (Gameplay / Commentary) http://www.youtube.com/watch?v=ySlwAHG4mxM Naruto Shippuden Ultimate Ninja Storm Generations Walkthrough! Walkthrough and Let's Play Playthrough of Naruto Shippuden Ultimate Ninja Storm Generations with Live Gameplay and Commentary in high defintion on PS3 and XBOX 360. My Twitter Page: http://twitter.com/TetraNinja My Facebook Fan Page: http://on.fb.me/kxJqjN

TruyềnKỳ Vn Shaun the Sheep The Big Chase 2011 Phần 2 4

TruyềnKỳ Vn Shaun the Sheep The Big Chase 2011   Phần 2 4

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