Michael Elliot "Mike" Epps (born November 18, 1970) is an American actor. His movies include "Next Friday", "Friday After Next", and "Open Season 2". Epps' trademark is a voice similar to Martin Lawrence in the original Open Season. He replaced Lawrence as the voice of Boog in "Open Season 2".
Proposition
A proposition is a term in philosophy and logic. It is a statement which has a truth value, meaning it can be proved to be true or false. For a proposition to be valid, it must be possible to prove the proposition is either true or false. Many teachers and students of logic use the term "statement" and "proposition" to mean the same thing. Propositions are also often represented by capital letters such as formula_1, formula_2 and formula_3.
It is possible to express the same proposition in many way. Proposition are only concerned with actual meaning, not the way the proposition is expressed. Propositions can look different, yet still mean the same thing. When two different propositions mean the same thing, they are said to be synonymous, meaning each statement has the same meaning.
For example, "Snow is white" (in English) and "Schnee ist weiß" (in German) are different sentences, because they are written in different languages. However, they mean exactly the same thing: snow is white. No matter what language the statement is written in, it will mean the same thing. As a result, these statements are synonymous.
In Aristotelian logic, a proposition is a specific kind of sentence that confirms or denies an action or predicate took place through a subject. Aristotelian propositions take forms like "All men are mortal" and "Socrates is a man". In each sentence, the subject (men, Socrates) has a status (are mortal, is a man) which can be regarded as true or false.
In logical positivism, a proposition whose truth value cannot possibly be decided is meaningless (Quine, for instance, believes that propositions generally have no clear criterion of identity). For example, statements about the existence of deities cannot be proved under logical positivism. Because the statements have no truth value, a logical positivist would consider propositions about deities (such as "God exists" or "God does not exist") to have no logical meaning.
Karst
Karst is a geological system of rocks where water has eroded (dissolved) the bedrock. If it is very extensive, karst can be a geographical or topographical feature. It is classed as a badland if it difficult to travel through the environment, which it often is.
Almost always, karst is formed in carbonate rocks, such as limestone or dolomite. Since carbonate sedimentary rocks are very common, karst areas occur all over the world.
Many karst regions display distinctive surface features, with sinkholes being the most common. However, karst surface features may be absent where the soluble rock is "mantled" (covered), such as by a non-soluble rock strata on top of the carbonate strata. Some karst regions include thousands of caves, and the water is generally underground.
The world's largest karst area is the Nullarbor Plain, part of the area of flat, almost treeless, dry country of southern Australia. It is on the Great Australian Bight coast with the Great Victoria Desert to its north. It is the world's largest single exposure of limestone bedrock, and occupies an area of about . At its widest point, it stretches about from east to west across the border region between South Australia and Western Australia.
Many parts of the world suffer from sinkholes which form when karsts are underground. Beneath the flat surface of the land in Florida, Guatemala City and elsewhere are vast systems of limestone. Water running through the limestone is dissolving the limestone away, leaving huge caverns. Without warning, huge holes appear in the surface, causing great damage. Practically the whole of Florida is sitting on a gigantic karst system, as are several countries in Central America. The area round Tampa is especially at risk, and there is a huge karst system under Mexico City. According to a senior geochemist, there are as many as 15,000 sinkholes in Illinois.
The world's deepest sinkhole is China's Xiaozhai Tienkeng at 2172ft (662m).
The Qattara Depression in Egypt is part of the Libyan Desert. It is roughly 50 miles (80km) by 75 miles (121km) in surface area. It is the world's largest natural sinkhole. It lies below sea level and is covered with salt pans, sand dunes and salt marshes.
PubMed Central
PubMed Central is a free database of scientific literature in biomedical and life sciences. It is on the Internet. It grew from the online Entrez PubMed biomedical literature search system. PubMed Central was developed by the U.S. National Library of Medicine (NLM) as an online archive of biomedical journal articles. It was started in 2000. As of 2021, it had over 7 million science papers in it.
All the words in the PubMed Central articles can be read freely. Some publishers, though, do not show their articles for some time after they publish them on paper (usually about six months).
PubMed Central was started in 2000. At first, it only had papers from "Proceedings of the National Academy of Sciences" and "Molecular Biology of the Cell". People can add older papers to PubMed Central. The oldest papers in PubMed Central are from the 1700s.
As of September 2004, PubMedCentral, PubMed, and related NLM services had about 1,300 hits every second, and gave 1.3 terabytes of data every day. The Library of Congress and the British Library showed support for the National Library of Medicine (NLM). It has also been popular with journal service providers.
PubMed Central is different from PubMed. The regular PubMed has papers' titles and abstracts, and PubMed central has the whole paper. Scientists call this "full text."
The PubMed Central Identifier (PMCID) is an ID tag for papers written by scientists and doctors. It is like an ISBN is for books. It shows the reader where to find the paper in the PubMed Central database.
Medical University of Innsbruck
The Medical University of Innsbruck (German: Medizinische Universität Innsbruck) is a university in Innsbruck, Austria. It used to be one of the four historical faculties of the Leopold-Franzens-Universität Innsbruck, but it became an independent (by itself) university in 2004.
The medical tradition dates back long before the university began. The first hospital began in the silver-mining city of Schwaz nearby in 1307. Because people grew as years went by, a medical faculty was added to the university, begun in 1669 by Emperor Leopold I, making it the first of its kind in the Alpine region.
Dolomite
Dolomite is the name of a sedimentary carbonate rock and a mineral, both composed of calcium magnesium carbonate CaMg(CO)
As a mineral, it is found in crystals. Dolomite rock (or 'dolostone') is mostly made of the mineral dolomite.
Limestone that is partially replaced by dolomite is referred to as "dolomitic limestone". In the old U.S. geologic literature it is called "magnesian limestone". Dolomite was first described in 1791 for exposures in the Dolomite Alps of northern Italy.
Gravel
Gravel is small, loose, rock particles. It is any loose rock that is larger than 2 mm (0.079 in) in its smallest dimension (about 1/12 of an inch) and no more than 64 mm (2.5 in).
Small gravel is composed of granules (>2 to 4 mm/0.079 to 0.16 in). Large gravel is called pebbles (>4 to 64 mm/0.16 to 2.5 in).
Particles smaller than gravel are sand, larger particles are cobbles.
Gravel and sand are used for road surfaces, and for cement and Tarmac. Mixtures of gravel and sand mixed with various crushed material, are known as "aggregate" in the trade. This is used for drainage in the basement of roads, and other purposes. Mixture of stones and resin is also used to pave footpaths, driveways, etc. This mixture is known as Resin Bonded Gravel.