Roman Fresnedo Siri (Salto, Uruguay, February 4, 1903 - Montevideo, June 26, 1975) was an Uruguayan architect.
An international competition to choose the most original design had been won in 1961 by a Uruguayan architect, Mr. Roman Fresnedo Siri. Siri had won acclaim for designing major civic buildings hroughout South America, including offices and hospitals. He also had a passion for the ocean, and even used his talents to design racing yachts.
Siri’s spirit and originality did not disappoint. From its earliest days, architects and passersby alike were intrigued by surprises in the buildings' construction. Rising dramatically from the shore of the historic Potomac River, two distinct structures dominated the triangular block of land: a circular council chamber and an 11-story crescent-shaped secretariat. By December 1964, texture and pattern had begun to emerge, giving each building a distinct character. Geometric diamond shapes decorated the outside of the council chamber, visually played off against the elegant vertical lines of the larger secretariat building. Gradually, other elements were added: reflecting pools, white columns, and slim concrete fins that gave the buildings a soaring quality.
Just over two years after work began, the completed secretariat was ready to house hundreds of staff members in approximately 170,000 square feet of space, furnished with marble, paintings, sculptures, and other gifts from PAHO member nations.
The council chamber alone could accommodate 400 delegates within its circular walls. The new PAHO headquarters was officially opened on September 27, 1965.
Photomask
In electronics manufacturing, a photomask is a special stencil which is used in photolithography to create a printed circuit board or integrated circuit. When light is shone through the photomask, certain parts where the light hits the unused circuit board are strengthened, much like what toothpaste does to the hard surfaces your teeth. When a circuit board is put through an acid bath, the parts where the light shone through the photomask stay in place, while the parts that were covered by the shadow of the photomask are eaten away by the acid. There are two prominent types of masks. "Contact" masks, which touch the surface of the silicon wafer directly. These masks are cheaper, at the price of being less precise. "Proximity" masks are placed near to, but not touching the wafer. These masks are much more expensive, but also a lot more precise. Another type is "Projection" masks, also known as "reticles", which only contain the pattern of one chip, instead of the pattern of the whole wafer.
Gastrotrich
The Gastrotricha, often called "hairy backs", are a phylum of microscopic (0.06-3.0 mm) animals abundant in fresh water and marine environments. Marine species are found mostly in between sediment particles, while terrestrial species live in the water films around grains of soil. Adults have a fixed cell number. About 700 species have been described.
Gastrotrichs are bilaterally symmetric, with a transparent body and a flat underside. Many species have a pair of short projections at the rear end. The body is covered with cilia, especially about the mouth and on the lower surface. Its two end projections have cement glands. This is a double-gland system where one gland secretes the glue and another secretes a de-adhesive. Like many microscopic animals, their movement is mainly powered by hydrostatics.
Gastrotrichs develop to a particular number of cells; further growth comes only from an increase in cell size. As is typical for such small animals, there are no respiratory or circulatory organs. Nitrogenous waste is probably excreted through the body wall, as part of respiration. The nervous system is relatively simple. The brain consists of two ganglia, one on either side of the pharynx. Each ganglion gives rise to a single nerve cord, which runs the length of the body and includes further, smaller ganglia. The main sense organs are the bristles and ciliated tufts of the body surface. Some gastrotrichs also possess light sensitive cells in the brain that work as primitive ocelli (eye spots).
Gastrotrichs are simultaneous hermaphrodites: they have both male and female sex organs. Once the sperm are produced, they are picked up by an organ on the tail that functions as a penis, and transferred to the partner. Fertilisation is internal, and the eggs are released by rupture of the body wall.
Many species reproduce entirely by parthenogenesis. In these species the male portions of the reproductive system are non-functional or entirely absent.
Some species can lay eggs that can remain dormant during times of desiccation (drought) or cold. These species produce regular eggs during good environmental conditions, which hatch in one to four days. The eggs hatch into miniature versions of the adult. The young typically reach sexual maturity in about three days, and gastrotrichs can live up to ten days under laboratory conditions.
Gastrotrichs are eutelic: each species has a genetically fixed number of cells as adults. Cell division stops at the end of embryonic development and further growth is only by cell enlargement.
Liam Ridgewell
Liam Ridgewell (born 21 July 1984) is an English football player. He plays for Birmingham City.
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Fábio Rochemback
Fábio Rochemback (born 10 December 1981) is a Brazilian football player. He has played for Brazil national team.
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Yasuomi Kugisaki
Yasuomi Kugisaki (釘崎康臣,くぎさき やすおみ,born 3 May 1982) is a Japanese football player. He plays for Honda Lock.
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Shingo Honda
Shingo Honda (born 23 November 1987) is a Japanese football player. He plays for Matsumoto Yamaga.
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Kengo Takushima
In the off-season, he has been also active as a futsal player in Fukuoka.
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Tadaomi Yasuda
In 2012, he became a coach in the Avispa Fukuoka organization.
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Mitsunori Izutani
Mitsunori Izutani (born 27 June 1983) is a Japanese football player.
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Shingo Hoshino
Shingo Hoshino (born 2 May 1978) is a Japanese football player.
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Koichi Kawai
Koichi Kawai (born 29 March 1979) is a former Japanese football player.
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Kazuhisa Hamaoka
Kazuhisa Hamaoka (born 28 February 1981) is a Japanese football player. He plays for Tochigi UVA.
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Kenta Kawai
Kenta Kawai (born 7 June 1981) is a former Japanese football player.
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François Clerc
François Clerc (born 18 April 1983) is a French football player. He plays for Olympique Lyonnais.
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Shigeru Sakurai
Shigeru Sakurai (born 29 June 1979) is a Japanese football player. He plays for Vegalta Sendai.
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Masayuki Ota
Masayuki Ota (born 17 June 1973) is a former Japanese football player.
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Ralf Edström
Ralf Edström (born 7 October 1952) is a former Swedish football player. He has played for Sweden national team.
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Yuta Suzuki
Yuta Suzuki (born 28 May 1987) is a Japanese football player. He plays for Montedio Yamagata.
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Hand axe
A hand axe is a stone tool of the Lower (early) and Middle Paleolithic Stone Age. It was a bifacial, similar on both sides, and held in the hand, not with a handle like a modern axe. It was held directly in the hand, perhaps wrapped in a piece of leather.