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

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.

Olivia and eczema

Olivia and eczema

Disclaimer: The information that is shared herein is intended for informational purposes regarding Any advice and/or product(s) mentioned should not be used to diagnose, treat, cure, or prevent any disease. Always consult your healthcare professional if you are currently taking medication, pregnant, trying to get pregnant, nursing, or if you have any other health condition before taking any products mentioned or applying any information contained herein. Please be advised. Desitin Maximum Strength Original Paste Diaper Rash Ointment - 4 oz.: http://www.target.com/p/desitin-maximum-strength-original-paste-diaper-rash-ointment-4-oz/-/A-13682481?ref=tgt_adv_XSG10001&AFID=Google_PLA_df&LNM=%7C13682481&CPNG=Baby&kpid=13682481&LID=PA&ci_src=17588969&ci_sku=13682481&gclid=CMS2_qGlj7oCFYWd4AodwGQA0g Offical Website: DESITIN: http://www.desitin.com/?utm_source=google&utm_medium=cpc&utm_campaign=Branded&utm_term=desitin&utm_content=Desitin|mkwid|sSypxjUsO_dc|pcrid|8333548629 Zinc helps repair damaged tissues and heal wounds. Zinc is like a 24-hour, on-call skin mechanic. It helps repair damaged tissues and heal wounds. Without zinc, your body's inside and outside repair time -- and possible health costs -- go up. Like vitamins, minerals are essential to your overall health and development, helping the body grow and take care of itself. Some research suggests that zinc might be particularly effective in treating topical irritations and injuries, such as acne, skin sores and minor wounds, by helping cells to regenerate *Acne -- Using zinc topically and taking it orally has shown some potential in preventing and alleviating the inflammation and scarring associated with acne. Zinc may help nip zits in the bud by reducing the amount of natural oil, or sebum, produced in the skin. It may also help heal damaged skin around acne that does develop. Some research has indicated that acne formation results in part from a lack of zinc in the diet. Another important use for zinc includes protecting skin from the sun's harmful ultraviolet (UV) rays. Whether you realize it or not, you may already be using zinc to prevent skin cancer every time you apply your favorite sunscreen; many sunscreens that provide broad spectrum UV protection contain zinc oxide. SUBSCRIBE: http://bit.ly/SubChefMamaRosa WATCH MORE: https://youtube.com/watch?v=TblPuZDp9Ag&list=PLC_cYkbNBKaBT9Vk6V0Iescc6QoZI0gN6 Healing Remedies: https://youtube.com/watch?v=VZLP3Cllo0g&list=PLC_cYkbNBKaB5S0ojZgU_DcR41ieRCYFs Vegetarian Cooking: https://youtube.com/watch?v=TblPuZDp9Ag&list=PLC_cYkbNBKaCAiwjQ5hHHkr9EoG4Dah1Z Product Reviews: https://youtube.com/watch?v=RbfVtwgkAOM&list=PLC_cYkbNBKaApvBjzhNJszRPucEaRIHIG Most Popular: https://youtube.com/watch?v=yjYznXXnYH8&list=PLC_cYkbNBKaCUeTvV_eG7LApASRCLFbQ4 FOLLOW ME: Facebook: https://facebook.com/Chefmamarosa Twitter: https://twitter.com/hairnailsbeauty My Website: http://www.treeofknowledgeministry.com ABOUT CHEF MAMA ROSA: Welcome to my channel full of knowledge about living life clean, healthy and full of love. Here you'll find natural remedies for your health issues, and recipes for the best vegan and vegetarian meals. Be sure to check out my website and follow me on my socials by clicking on the links above!

How to apply sunscreen on your face correctly

How to apply sunscreen on your face correctly

Dear everyone, Dear little sunshines, Do you know how to put the sunscreen on effectively? It is not enough to put one layer on our faces. We should put the second layers on cheeks and nose areas because those areas are closer to the UV rays. Also, it is important to put the sunscreen on our eyes areas because we don't want to have freckles around our eyes too. The best sunscreen ingredient is Zinc Oxide which can reflect most of UVA and UVB rays. For the foundation and loose powder I used in this videos: 1. Two way Foundation: Smashbox Color: Fair 2 2. Loose Powder: Smashbox HALO HYDRATING PERFECTING POWDER Color Fair 3. Sunscreen with tinted color EltaMD UV Physical Broad-Spectrum SPF 41 Please come to visit my Facebook Page and web site ^.^. They are updated daily!! There a lot of different kinds of skincare tips and make up sharing!!

SCIENCE! in Zootopia: How realistic is the Climate Wall? (Full Discussion)

SCIENCE! in Zootopia: How realistic is the Climate Wall?  (Full Discussion)

Find the written outline (made before this recording) over on r/zootopia! https://www.reddit.com/r/zootopia/comments/7okbrt/zootopia_science_thread_the_climate_wall_is_it/ This discussion was hosted by eng050599 and J Shute Norway This video is brought to you by ZNN: http://www.zootopianewsnetwork.com/

ITR ZN vs ibiza TT vs ctr UZ

ITR ZN vs ibiza TT vs ctr UZ

Turn Pennies Silver and Gold (Chemistry Trick)

Turn Pennies Silver and Gold (Chemistry Trick)

In this video we turn copper pennies into silver and finally to gold. Obviously it's a chemistry trick but still impressive. First we get 30g of zinc sulfate and dissolve it into 100mL of water. Zinc sulfate was made back in our video on making a copper sulfate and zinc battery: http://www.youtube.com/watch?v=Id3tL2iI0Vw If you don't have zinc sulfate or can't make it, you can also use zinc chloride. This can be made by simply mixing hydrochloric acid with zinc metal and waiting until the fizzing stops. Then we drop in several cut strips of zinc metal. Zinc metal was obtained from our video on getting useful materials from batteries: http://www.youtube.com/watch#%21v=knc1lSupAwQ The solution is heated to a boil and copper pennies, that have been thoroughly washed/cleaned, are dropped in. They must touch the zinc in order for this reaction to work. Leave it in for five to ten minutes. The zinc metal dissolves and releases electrons that go into the copper and give it a negative charge. The zinc ions in solution now redeposit form a thin layer of zinc metal. Giving the coin a silvery color. Now the smart physical chemist might wonder how this can possibly work. Overall we're going from zinc metal to zinc metal and at first it seems like we're missing something about thermodynamics. What is the driving force? I've searched the literature and there doesn't seem to be a consensus among scientists, some claim it's a surface free energy issue with zinc having a lower potential on copper than in free solution (at high concentration). Others state that its an alloy of zinc metal and copper on the surface. The silvery color you're seeing on the penny is actually a type of white brass, not pure zinc. This is thermodynamically more favorable than pure separate metals and thus serves as the driving force. Anyway, whatever the specific chemical reason, we've now deposited zinc onto copper. The most amazing trick is to turn it into gold. Simply wash the coin and place it on a hotplate heated to about 300 Celsius. As it heats the zinc will diffuse into the copper, forming brass on the surface that looks like gold. Eventually it will wear off but the results are rather impressive.

Lg Lcd Tv Flickering Screen Repair

Lg Lcd Tv Flickering Screen Repair

[Game] Extreme Car Driving Simulator | Android App

[Game] Extreme Car Driving Simulator | Android App

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Ninja Kid Run Free | Android App

Ninja Kid Run Free | Android App

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