Rubén Sierra (b. October 6, 1965) is a retired Puerto Rican Major League Baseball player. Sierra was an outfielder.
Matt Clement
Matthew Paul Clement (born August 12, 1974, in Butler, Pennsylvania) is a former Major League Baseball starting pitcher. Clement played for the San Diego Padres, Florida Marlins, Chicago Cubs and Boston Red Sox. While on the Red Sox active roster, he was injured all of the 2007 season. He batted and threw right-handed.
On April 5, 2009, Clement said he was no longer going to play baseball.
Tarkovsky
Tarkovsky () is a Russian surname. The feminine form is Tarkovskaya (). A well-known person with this name was Andrei Tarkovsky, a Soviet movie director.
Marin County, California
Marin County, California is a county in the US state of California. It is north of the San Francisco Bay.
Some of the cities in Marin County are:
Dolce &amp; Gabbana
Dolce & Gabbana, often called D&G, is an Italian fashion label. They make and sell clothes including shirts and underwear. The company was founded in Milan in 1985 by Domenico Dolce and Stefano Gabbana.
Transitional fossil
Transitional fossils (or missing links) are the fossilised remains of lifeforms that show features typical of two distinct groups. It may be a rare fossil, such as "Archaeopteryx", which shows early features of a group which later becomes widespread.
The rarity of transitional forms is interesting. It suggests the new forms are not yet dominant in the ecology of their time, and their populations are relatively small. It follows that their fossils would be scarce. In the Solnhofen limestone where "Archaeopteryx" was found, there are more examples of pterosaurs of several genera than there are of the proto-bird. In the Jurassic, the pterosaurs were dominant in the air.
But in the Lower Cretaceous the situation is reversed. The pterosaurs are in decline, and large numbers of different bird species are found in the famous Chinese lagerstatten deposits such as the Jehol biota. The Lower Cretaceous birds are clearly more bird-like, and the features they developed enabled them to invade habitat niches which had been the preserve of pterosaurs, or maybe were not previously exploited at all.
Typical of transitional fossils is that some features are clearly basal or primitive. Other features are advanced ('derived'). With "Archaeopteryx", the front legs are derived, and show clearly the capacity for flight. Also, the feathers had the rachus (stem) off-centre, a feature of all bird flight feathers. The rest of the skeleton was just like any other small carnivorous dinosaur.
When transition takes place between one group and another, not all features change at the same time. This is called mosaic evolution. Transitions between higher groups would involve a series of transitional species, only a few of which may be found as fossils.
Jan Vyčítal
Jan Vyčítal (March 8, 1942 in Prague, Protectorate of Bohemia and Moravia – March 1, 2020) was a Czech country music singer and songwriter. He was founding member of Greenhorns.
Vyčítal died on March 1, 2020 at the age of 77.
Period 3 element
A period 3 element is an element found on the third period (row) of the periodic table. The row has eight elements sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon.
Period 3 elements have electrons in the first three electron shells. The first and second electron shells are always full. The third electron shell (valence electrons) fills when atomic number gets bigger. Two electrons join the 3s orbital, and six electrons join the 3p orbitals.
Period 2 element
A period 2 element is an element in the second period (row) of the periodic table. Period 2 has eight elements: lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon. Their atomic numbers go from 3 to 10.
Period 2 elements have electrons in the first two electron shells. The first electron shell is always full. The second electron shell (valence electrons) fills when atomic number gets bigger. Two electrons join the 2s orbital, and six electrons join the 2p orbitals.
These atoms can become stable in two ways:
Mariner 1
Mariner 1 was a NASA spacecraft. It was the first spacecraft in the Mariner program. Mariner 1 was planned to do a Venus fly-by. However, it was destroyed by the Range Safety Officer 293 seconds after launch. It was destroyed because the rocket moved off course and was a safety risk. Mariner 1 was followed by Mariner 2.
The Atlas-Agena rocket was controlled by a hand-written formula:
Which means "the th smoothed value of the time derivative of a radius R". However, for this mission, an overline (‾) was missing in the formula, which looks something like this:
Because the smoothing function was missing, the rocket became sensitive at minor changes. Then, the rocket became out of control and destroyed by the Range Safety Officer. Few years later, Arthur C. Clarke wrote that Mariner 1 was "wrecked by the most expensive hyphen in history".
Cornish cookery
Cornish cookery denotes the cooking styles, traditions and recipes associated with Cornwall. It has been heavily influenced by the geography of the county as well as its social history.
Being a peninsula, fish dishes form a major part of the historical and modern recipes in Cornwall, with the fishing industry playing a major part in its economy. The iconic dish of Cornwall, the pasty, has its roots in the mining industry.
Cornwall's cookery has influenced and been influenced by other British cuisine, as well as having similarities with the cuisine of its neighbour, Devon.
Much of Cornwall's farming land is suitable for milk production and one of the by products is clotted cream (cream thickened by cooking). This forms the basis for many local specialities including Cornish fudge and Cornish ice cream and is used in Cornish cream teas. Cornish clotted cream is protected under EU law, and cannot be made anywhere else.
Cornwall is perhaps best known for its pasties, a savoury baked dish made from pastry. Today's pasties usually contain a filling of beef steak, onion, potato and swede with salt and white pepper, but historically pasties had a variety of different fillings. Pasties are often locally referred to as "oggies".
National Gallery
National gallery may refer to:
Pedro Rodríguez Ledesma
Pedro Eliezer Rodríguez Ledesma, commonly known as Pedro (born 28 July 1987) is a Spanish footballer who plays for AS Roma and the Spanish national team.
Sergio Busquets
Sergio Busquets i Burgos (born 16 July 1988) is a Spanish footballer who plays for FC Barcelona and the Spanish national team.
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Edifício Itália
Edifício Itália is a skyscraper in São Paulo, Brazil. It is 165 meters (550 feet) tall and has 46 floors. It was built in 1965.
Start
The start is a beginning of an activity or the beginning of a race. It can also mean switching on an engine.
Ito Hirobumi
Ito was the first Japanese Governor General of Korea 1896–1909.
In 1874, Ito became the Interior Minister, and from 1878 to 1880, he served as the Second Interior Minister. From 1884 to 1887, Ito was Imperial Household Minister.
From 1885 to 1888, he was first Prime Minister of Japan, and also, in 1887, was the Adjunct Foreign Minister of Japan. He served again as Prime Minister from 1892 to 1896, and again in 1898, and his final term was in 1900-1901 as the 10th Prime Minister.
He was killed for political reasons.
Complexity class
A Complexity class is a concept from theoretical computer science and mathematics: All problems that have the same complexity are in the same complexity class. This means, that for a given input, they need about the same amount of resources, such as compute time, or memory. The most often used models for complexity are time complexity, which measures the time needed to calculate a result, or space complexity, which looks at the amount of memory or storage needed. When talking about complexity classes, a "worst case scenario" is usually assumed.