A superacid is an acid with an acidity greater than that of 100% pure sulfuric acid. According to the modern definition, a superacid has a chemical potential of the proton higher than that of pure sulfuric acid.
Chemists use strong acids to break down other molecules. Some molecules are so strong (held together with strong chemical bonds) that they resist attack by common acids. Supercids can break down molecules that stand up to most other acids.
Commercially available superacids include trifluoromethanesulfonic acid (CFSOH), also known as triflic acid, and fluorosulfonic acid (FSOH). Both acids are about a thousand times stronger (that is, have more negative "H" values) than sulfuric acid. The strongest superacids are prepared by the combination of two components, a strong Lewis acid and a strong Brønsted acid. The strongest known superacid is fluoroantimonic acid.
Sick building syndrome
Sick building syndrome (SBS) is a combination of illnesses (a syndrome) associated with a human's place of work (office building) or dwelling. A 1984 World Health Organization report into suggested up to 30% of new and remodeled buildings around the world may be linked to symptoms of SBS. Most of the sick building syndrome is related to poor indoor air quality.
SBS can be caused by flaws in the heating, ventilation, and air conditioning (HVAC) systems. Other causes have been contaminants produced by outgassing of some types of building materials, volatile organic compounds (VOC), molds (see mold health issues), improper exhaust ventilation of ozone (byproduct of some office machinery), using light industrial chemicals in the building, or lack of adequate fresh-air intake/air filtration (see Minimum Efficiency Reporting Value).
People try to fix SBS symptoms by increasing the overall turn-over rate of fresh air exchange between the building's air and the outside air. But the new green building design goals should be able to avoid most of the SBS sources in the first place. Cleaners should lower their use of dangerous VOC cleaning compounds, and get rid of conditions that cause allergenic, potentially-deadly mold growth.
Building occupants complain of symptoms such as irritation of the eyes, nose, throat; neurotoxic or general health problems; skin irritation; nonspecific hypersensitivity reactions; and odor and taste sensations.
Several sick occupants may report individual symptoms which do not appear to be connected. The key to discovery SBS is if a number of people first experience their illnesses within a period of weeks. In most cases, SBS symptoms will be relieved soon after the occupants leave the particular room or zone. However, there can be lasting effects of various neurotoxins, which may not clear up when the occupant leaves the building. Sensitive individuals can have long-term health effects.
The following steps can avoid SBS:
There might be a gender difference in reporting rates of sick building syndrome because women tend to report more symptoms than men. Along with this, some studies found that women have a more responsive immune system and are more prone to mucosal dryness and facial erythema. Also, women are alleged by some to be more exposed to indoor environmental factors, because they have a tendency to have more clerical work where they are exposed to unique office equipment and materials (example: blueprint machines), while men may more often have jobs based outside of offices.
Andrea Libman
Andrea Eva Libman (born July 19, 1984 in Toronto, Ontario, Canada) is a Canadian voice actress, television writer and singer who is best known for voicing Chi-Chi in "Dragon Ball", Emmy in "Dragon Tales", and Pinkie Pie and Fluttershy in "". She also made on-screen appearances in the television shows "", "Susie Q", "The Lotus Eaters", and "Lyddie".
17 Again (movie)
17 Again is a 2009 American comedy-drama fantasy movie that was produced by Adam Shankman, Richard S. Wright, Jennifer Gibgot, Tom Rosenberg and Gary Lucchesi and was directed by Burr Steers. "17 Again" is about a 37-year-old man who becomes 17 again. It was released on April 17, 2009 in North America. The movie received mixed to positive reviews with a 55% rating on Rotten Tomatoes and a 48 out of 100 from Metacritic
Four Christmases
Four Christmases is an 2008 American romantic comedy movie that was produced by Gary Barber, Roger Birnbaum, Jonathan Glickman, Vince Vaughn and Reese Witherspoon and was directed by Seth Gordon. "Four Christmases" was released on November 26, 2008 in North America. The movie received negative reviews with a 25% rating on Rotten Tomatoes and a 41 out of 100 from Metacritic.
Automatic firearm
An automatic firearm is a firearm which will keep firing as long as the trigger is being pulled and there is still ammunition in the magazine.
An automatic weapon works by firing, automatically removing the cartridge case from the chamber, ejecting it from the side of the gun, and then loads a new cartridge into the chamber.
An "automatic pistol" or "automatic shotgun" usually means that it has a semi-automatic design. However, fully automatic pistols (for example the Steyr TMP) and shotguns (such as the Daewoo USAS-12 and the AA-12) do exist. "Automatic rifle" usually means that the rifle has a fully automatic design, not semi-automatic.
In most countries, automatic firearms are usually only allowed for the military and police to use. In countries where automatic firearms can be used by the public, there are usually very strict rules on their use.
A fully automatic weapon (a machine gun) is one that keeps firing bullets as long as the trigger is pulled. It stops when the trigger is let go or the ammunition is all gone. In some countries, any weapon that shoots more than one shot at a time when the trigger is pulled once is legally called a machine gun. Some firearms fire more than one bullet after each trigger pull, but only a limited number. This is called burst fire.
Submachine guns are fully automatic weapons that fire a pistol cartridge. They can also be used by only one person. Sometimes they are called machine pistols.
Input device
In computing, an input device is computer hardware which is used to enter data for processing. Examples of input devices include keyboard, mouse, image scanner, digital cameras and joysticks. A touchscreen is a combined input and output device.
Output device
In computing, an output device is a peripheral equipment device that is used to give the results of processed data.
Hitting for the cycle
In baseball, a player hits for the cycle when they hit a single, a double, a triple, and a home run in the same game. It does not have to be in that order. Collecting the hits in that order is known as a natural cycle.
Doubleheader (baseball)
In baseball, a doubleheader is a game played between two teams on the same day. This is usually as a result of weather moving postponing a game.
Louisville Colonels
The Louisville Colonels were a Major League Baseball team that played from 1882 to 1899. The Colonels represented the city of Louisville, Kentucky, in the United States.
The team played in the American Association (AA). This was an early American major league baseball league from the 1800s. The team was first called the Louisville Eclipse from 1882 to 1884. Then it was renamed the Louisville Colonels in 1885. The name "the Colonels" comes from the Kentucky colonel, a title of honor in the Commonwealth of Kentucky.
In 1891, the AA folded (stopped existing). The Colonels then joined the National League. The team played for the National League through 1899.
Notable Colonel players include Fred Clarke, Honus Wagner, and Rube Waddell.
Player-coach
A player-coach, in sports, is a member of a sports team who simultaneously holds both playing and coaching duties. The term can be used to refer to both players who serve as head coaches, or as assistant coaches.