Dentistry is a specialty in medicine, which is practiced by a dentist. Dentists find out what's wrong, fix, and help prevent problems with teeth. A dentist has other people that help him with their job. Dental hygienists help people keep their teeth clean. A dental assistant helps the dentist when they are treating a patient. Dental surgeons will perform surgery to fix large or dangerous problems with people's teeth. There are also dentists called orthodontists, who can move people's teeth using braces. Dental surgeons and orthodontists are called specialists.
Toyota Tundra
The Toyota Tundra is a full-size pickup truck. It is sold by Toyota in the United States. The Tundra was first sold in 2000. The truck is bigger than the Toyota Tacoma. There are four different versions of the Tundra. These are the original, "base", version and the "SR5", "Grade", and "CrewMax" versions. The Tundra is made in San Antonio, Texas. The design of the truck was changed for 2007. The Tundra was a replacement for the Toyota T100 pickup, a bigger version of the Toyota Hi-Lux.
Toyota Celica
The Toyota Celica was a sports car made by Toyota. Toyota stopped selling the Celica in 2005 due to low sales and it was replaced by the Scion tC. The first Celicas were made in 1970.
Toyota 4Runner
The Toyota 4Runner is a Sports utility vehicle made by Toyota. Toyota makes the 4Runner in Tahara, Japan as well as the Hino factory. The 4Runner was first sold in 1984 as a camper version of the Toyota Hi-Lux, sharing the same parts and engines. The 4Runner got a bigger V6 engine in 1988. Toyota has redesigned the 4Runner in many years of its life. The 4Runner was sold as a 2-door model alongside the 4-door until 1992. The 4Runner's competition comes from the Nissan Pathfinder, Jeep Grand Cherokee, and Chevrolet Blazer. The 4Runner was a compact SUV until 1996.
Rhythmic gymnastics
Rhythmic gymnastics (short: RG) is a type of gymnastics. Rhythmic gymnasts perform on a floor with an apparatus, accompanied by music, in individual or group events. Gymnasts manipulate one or two apparatus: rope, hoop, ball, clubs, and ribbon. Rhythmic gymnastics is a sport that combines elements of gymnastics, dance, and apparatus manipulation. The victor is the participant who earns the most points, determined by a panel of judges, for leaps, balances, pirouettes, flexibility, apparatus handling, execution, and artistic effect.
Rhythmic gymnastics developed from other sports. It is influenced by group gymnastics, classical ballet, German apparatus work, and the Swedish free exercise method.
International competitions are split between juniors, under sixteen by their year of birth; and seniors, for women sixteen and over again by their year of birth. The largest events in the sport are the Olympic Games, World Championships, and World Cups.
Rhythmic gymnastics was officially recognized by FIG in 1963. The first time rhythmic gymnastics was in the Olympics was in 1984 in Los Angeles. That year, a Canadian gymnast called Lori Fung won the individual competition. In 1996, rhythmic gymnastics group competitions were added to the Olympics.
The length of the rope depends on how tall the gymnast using it is. They swing the rope, throw and catch the rope, make figure-eights, and more. They also leap and jump through the rope while they are holding it.
The hoop is made of wood. Gymnasts toss it and catch it, spin it, swing it, and roll it in many different ways.
Balls used in rhythmic gymnastics are made with rubber or soft plastic. Gymnasts throw balls and catch them, bounce and roll them, balance the ball on their hand, and do waves and circles.
The clubs are another piece of equipment that rhythmic gymnasts use. The clubs look similar to bowling pins or bottles. They are made of wood or plastic. Gymnasts use the clubs to do circles, throws, swings, plus tapping.
The group routine is a little bit different. It’s not a piece of equipment; it’s just a different kind of routine. In the group event, five rhythmic gymnasts will do a routine together. The gymnasts have to work together to make the routine work. In a group routine, gymnasts will exchange whatever equipment they are using with each other.
Wealth
Wealth often means that much money is available. But there are several other aspects that can be more important. If one thinks of single persons one will look at their personal property or assets like land and livestock. Looking at countries one thinks of GDP per capita and of natural capital.
The original meaning of the old English word for "weal", where wealth comes from, was "well-being" or welfare. (It was an adjective.)
Qualification
The term qualification may mean:
Professional certification
Professional certification, trade certification, or professional designation, often called simply "certification" or "qualification", is a certification a person gets to assure that he/she is qualified to perform a job or task.
Certifications are very common in aviation, construction, technology and other industrial sectors, as well as health care and finance.
Darmstadt (region)
Darmstadt (German: "Regierungsbezirk Darmstadt", Hessian: "Regierungsbezirk Damstadt") is one of the three Regierungsbezirk of Hesse, Germany. It is in the south of the state.
Nebula
A nebula is an interstellar cloud of dust, hydrogen, helium and other ionized gases in a galaxy.
The Persian astronomer, Abd al-Rahman al-Sufi, mentioned a true nebula for the first time in his book, "Book of Fixed Stars" (964). He said that there was a "little cloud" near the Andromeda galaxy.
A nebula is usually made up of hydrogen gas and plasma. It may be the first stage of a star's cycle, but it may also be one of the last stages.
Many nebulae or stars form from the gravitational collapse of gas in the interstellar medium or ISM. As the material contracts, massive stars may form in the center, and their ultraviolet radiation ionises the surrounding gas, making it visible at optical wavelengths.
The size of these nebulae, known as H II regions, varies depending on the size of the original cloud of gas. These are sites where star formation occurs. The formed stars are sometimes known as a young, loose cluster.
Some nebulae are formed as the result of supernova explosions, the death throes of massive, short-lived stars. The materials thrown off from the supernova explosion are ionized by the energy and the compact object that it can produce. One of the best examples of this is the Crab nebula, in Taurus. The supernova event was recorded in the year 1054 and is labelled SN 1054. The compact object that was created after the explosion lies in the center of the Crab Nebula and is a neutron star.
Other nebulae may form as planetary nebulae. This is the final stage of a low-mass star's life, like Earth's Sun. Stars with a mass up to 8-10 solar masses evolve into red giants and slowly lose their outer layers during pulsations in their atmospheres. When a star has lost enough material, its temperature increases and the ultraviolet radiation it emits can ionize the surrounding nebula that it has thrown off. The nebula is 97% Hydrogen and 3% Helium with trace materials.
In the past galaxies and star clusters were also called 'nebulae', but no longer. Nebulae can be sorted by what they look like and why we can see them.
Large regions of ionised hydrogen gas are produced by star-forming regions. Nebulae are often star-forming regions, such as in the Orion complex. In these regions gravitation pulls together gas and dust. Material clumps together to form larger masses, which attract further matter. Eventually this become massive enough to form stars. The material left over may form planets and other planetary system objects.
Emission nebulae make their own light. They are often called H II regions, because it is the ionized hydrogen which makes them glow. Usually the gases in an emission nebula are ionized. This makes them emit light and infra-red radiation.