guerra de corea

[AzetSar]

A water mixture that's super chilled to well below freezing. Once the water freezes, at night when energy demand is low, it's ready to be used to cool the air the next day. This is called charging, and a charged off-peak cooling system takes very little energy to keep cold in stand-by mode until it's ready to be used to cool the air in an office building or home. As the building starts to warm up during the day, the air-conditioning kicks on, and the chilled refrigerant from the off-peak cooling system keeps the building's air cool. The glycol cycles through the ice filled tanks periodically to cool back down after being exposed to the hot air, and eventually, this exchange of hot for cold melts the ice. In the evening, the system charges again, freezing the melted ice with a chiller, and preparing the system for the next hot day. More complex systems can use other forms of refrigerant for cooling or use different design strategies for storing ice.|Content-recognition software can identify songs. Protect them from copyright infringement. You're in line for a movie when a great song plays over the sound system. Although you like the song, you have no idea what it's called or who sings it. You pull out your cell phone, dial a number and hold the phone toward the speakers. In a few seconds, you receive a text message with the name of the song, the artist's name and even a link you can follow to buy a copy. The service you called uses content-recognitionsoftware to identify the song. These programs are helpful if you want to learn about a song playing nearby. They can also help to curb copyright infringement, which is a huge issue for independent artists and corporations alike. Until recently, companies had to rely on a human being to detect copyright violations and then take action. Sites like YouTube normally count on users to report inappropriate material, but some don't consider clips that violate copyright law to be inappropriate. Some users say e-cigs have helped reduce their "smoker's cough," sharpened their senses of taste and smell, and even improved their sleep. The electronic cigarette was invented by Chinese pharmacist Hon Lik, who patented the device in 2003 and introduced it to the Chinese market the following year. Numerous companies are now selling e-cigarettes to customers around the world. But as e-cigarette smoking -- or "vaping" as it's sometimes called -- has grown in popularity, some have concerns about its safety, including the possibility that the vapor created by the devices contains dangerous chemicals. Is the electronic cigarette a cleaner, healthier choice for smokers? Or is it a dangerous device with hidden risks? Both viewpoints have their merits, but on the next page we'll start with the basics: how the product works, and why it's popular. Lighting a traditional cigarette causes the tobacco to burn, releasing smoke that contains nicotine. The user breathes in the smoke to deliver nicotine to the lungs. presidential debate

















































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