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Ewa Reactor
The Ewa Reactor was Poland's first research nuclear reactor. Its name was derived from the first letters of the Polish words: ''Eksperymentalny'' (Experimental), ''Wodny'' (Water), and ''Atomowy'' (Atomic) as a reference to Ève Curie. History The reactor was activated on June 14, 1958, in the Instytut Badań Jądrowych (Institute of Nuclear Research) (Currently the Instytut Energii Atomowej tomic Energy Institute) in Otwock near Warsaw. It was deactivated it in February 1995 due to a shortage of uranium for experiments, and reactivated in April of the same year after the acquisition of new fuel. The reactor is currently deactivated and partially dismantled. Ewa was based on the Soviet VVR-S design, had an initial power of 2 MW, was fueled by enriched uranium, and moderated by pressurized water. In 1963 and 1967, the reactor underwent two major overhauls that improved the safety of the reaction and allowed for the use of better enriched fuels. After these changes, the reactor's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reaktor Ewa
The Ewa Reactor was Poland's first research nuclear reactor. Its name was derived from the first letters of the Polish language, Polish words: ''Eksperymentalny'' (Experimental), ''Wodny'' (Water), and ''Atomowy'' (Atomic) as a reference to Ève Curie. History The reactor was activated on June 14, 1958, in the Instytut Badań Jądrowych (Institute of Nuclear Research) (Currently the Instytut Energii Atomowej [Atomic Energy Institute] ) in Otwock near Warsaw. It was deactivated it in February 1995 due to a shortage of uranium for experiments, and reactivated in April of the same year after the acquisition of new fuel. The reactor is currently deactivated and partially dismantled. Ewa was based on the Soviet LWR, VVR-S design, had an initial power of 2 Watt#Megawatt, MW, was fueled by Uranium enrichment, enriched uranium, and moderated by pressurized water. In 1963 and 1967, the reactor underwent two major overhauls that improved the safety of the reaction and allowed for the use of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poland
Poland, officially the Republic of Poland, is a country in Central Europe. It is divided into 16 administrative provinces called voivodeships, covering an area of . Poland has a population of over 38 million and is the fifth-most populous member state of the European Union. Warsaw is the nation's capital and largest metropolis. Other major cities include Kraków, Wrocław, Łódź, Poznań, Gdańsk, and Szczecin. Poland has a temperate transitional climate and its territory traverses the Central European Plain, extending from Baltic Sea in the north to Sudeten and Carpathian Mountains in the south. The longest Polish river is the Vistula, and Poland's highest point is Mount Rysy, situated in the Tatra mountain range of the Carpathians. The country is bordered by Lithuania and Russia to the northeast, Belarus and Ukraine to the east, Slovakia and the Czech Republic to the south, and Germany to the west. It also shares maritime boundaries with Denmark and Sweden. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Reactor
A nuclear reactor is a device used to initiate and control a fission nuclear chain reaction or nuclear fusion reactions. Nuclear reactors are used at nuclear power plants for electricity generation and in nuclear marine propulsion. Heat from nuclear fission is passed to a working fluid (water or gas), which in turn runs through steam turbines. These either drive a ship's propellers or turn electrical generators' shafts. Nuclear generated steam in principle can be used for industrial process heat or for district heating. Some reactors are used to produce isotopes for medical and industrial use, or for production of weapons-grade plutonium. , the International Atomic Energy Agency reports there are 422 nuclear power reactors and 223 nuclear research reactors in operation around the world. In the early era of nuclear reactors (1940s), a reactor was known as a nuclear pile or atomic pile (so-called because the graphite moderator blocks of the first reactor were placed into a tall pi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polish Language
Polish (Polish: ''język polski'', , ''polszczyzna'' or simply ''polski'', ) is a West Slavic language of the Lechitic group written in the Latin script. It is spoken primarily in Poland and serves as the native language of the Poles. In addition to being the official language of Poland, it is also used by the Polish diaspora. There are over 50 million Polish speakers around the world. It ranks as the sixth most-spoken among languages of the European Union. Polish is subdivided into regional dialects and maintains strict T–V distinction pronouns, honorifics, and various forms of formalities when addressing individuals. The traditional 32-letter Polish alphabet has nine additions (''ą'', ''ć'', ''ę'', ''ł'', ''ń'', ''ó'', ''ś'', ''ź'', ''ż'') to the letters of the basic 26-letter Latin alphabet, while removing three (x, q, v). Those three letters are at times included in an extended 35-letter alphabet, although they are not used in native words. The traditional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ève Curie
Ève Denise Curie Labouisse (; December 6, 1904 – October 22, 2007) was a French and American writer, journalist and pianist. Ève Curie was the younger daughter of Marie Skłodowska-Curie and Pierre Curie. Her sister was Irène Joliot-Curie and her brother-in-law Frédéric Joliot-Curie. She worked as a journalist and authored her mother's biography ''Madame Curie'' and a book of war reportage, '' Journey Among Warriors''. From the 1960s she committed herself to work for UNICEF, providing help to children and mothers in developing countries. Ève was the only member of her family who did not choose a career as a scientist and did not win a Nobel Prize, although her husband, Henry Richardson Labouisse Jr., did collect the Nobel Peace Prize in 1965 on behalf of UNICEF, completing the Curie family legacy of five Nobel Prizes. Childhood Ève Denise Curie was born in Paris, France, on December 6, 1904. She was the younger daughter of the scientists Marie and Pierre Curie, who ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otwock
Otwock is a city in east-central Poland, some southeast of Warsaw, with 44,635 inhabitants (2019). Otwock is a part of the Warsaw Agglomeration. It is situated on the right bank of Vistula River below the mouth of Swider River. Otwock is home to a unique architectural style called Swidermajer. Otwock is situated in the Masovian Voivodship since 1999; previously, it was in Warszawa Voivodship (1975–1998). It is the capital of Otwock County. The town covers the area of . Forested areas make up 23% of the territory. History Even though the first mention of a village called ''Otwosko'' comes from the early 15th century, Otwock did not fully develop until the second half of the 19th century, when in 1877 the Vistula River Railroad was opened, which ran from Mława via Warsaw, to Lublin and Chełm. Otwock, which is located along the line, became a popular suburb, with numerous spas and several notable guests, including Józef Piłsudski and Władysław Reymont, who wrote hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warsaw
Warsaw ( pl, Warszawa, ), officially the Capital City of Warsaw,, abbreviation: ''m.st. Warszawa'' is the capital and largest city of Poland. The metropolis stands on the River Vistula in east-central Poland, and its population is officially estimated at 1.86 million residents within a greater metropolitan area of 3.1 million residents, which makes Warsaw the 7th most-populous city in the European Union. The city area measures and comprises 18 districts, while the metropolitan area covers . Warsaw is an Alpha global city, a major cultural, political and economic hub, and the country's seat of government. Warsaw traces its origins to a small fishing town in Masovia. The city rose to prominence in the late 16th century, when Sigismund III decided to move the Polish capital and his royal court from Kraków. Warsaw served as the de facto capital of the Polish–Lithuanian Commonwealth until 1795, and subsequently as the seat of Napoleon's Duchy of Warsaw. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium
Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weakly radioactive because all isotopes of uranium are unstable; the half-lives of its naturally occurring isotopes range between 159,200 years and 4.5 billion years. The most common isotopes in natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99% of uranium on Earth) and uranium-235 (which has 143 neutrons). Uranium has the highest atomic weight of the primordially occurring elements. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. It occurs naturally in low concentrations of a few parts per million in soil, rock and water, and is commercially extracted from uranium-bearing minerals such as uraninite. In nature, uranium is found as uranium-238 (99. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watt
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one newton, the rate at which work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circuit). : ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Enrichment
Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235U) has been increased through the process of isotope separation. Naturally occurring uranium is composed of three major isotopes: uranium-238 (238U with 99.2739–99.2752% natural abundance), uranium-235 (235U, 0.7198–0.7202%), and uranium-234 (234U, 0.0050–0.0059%). 235U is the only nuclide existing in nature (in any appreciable amount) that is fissile with thermal neutrons. Enriched uranium is a critical component for both civil nuclear power generation and military nuclear weapons. The International Atomic Energy Agency attempts to monitor and control enriched uranium supplies and processes in its efforts to ensure nuclear power generation safety and curb nuclear weapons proliferation. There are about 2,000 tonnes of highly enriched uranium in the world, produced mostly for nuclear power, nuclear weapons, naval propulsion, and smaller quantities for research reactors. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isotopes
Isotopes are two or more types of atoms that have the same atomic number (number of protons in their nuclei) and position in the periodic table (and hence belong to the same chemical element), and that differ in nucleon numbers (mass numbers) due to different numbers of neutrons in their nuclei. While all isotopes of a given element have almost the same chemical properties, they have different atomic masses and physical properties. The term isotope is formed from the Greek roots isos ( ἴσος "equal") and topos ( τόπος "place"), meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table. It was coined by Scottish doctor and writer Margaret Todd in 1913 in a suggestion to the British chemist Frederick Soddy. The number of protons within the atom's nucleus is called its atomic number and is equal to the number of electrons in the neutral (non-ionized) atom. Each atomic numbe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maria Reactor
The Maria reactor is Poland's second nuclear research reactor and is the only one still in use. It is located at Narodowe Centrum Badań Jądrowych (NCBJ) (National Center for Nuclear Research) at Świerk-Otwock, near Warsaw and named in honor of Maria Skłodowska-Curie. It is the only reactor of Polish design. Maria is a multifunctional research tool, with a notable application in production of radioisotopes, research with utilization of neutron beams, neutron therapy, and neutron activation analysis. It operates about 4000 hours annually, usually in blocks of 100 hours. Technical description The technical details of the reactor are given in the references. Maria is a pool type reactor with a power of 30 MW (thermal). Despite it being a pool reactor, it contains channels (aluminum tubes) individually connected to the primary coolant. The water pool provides cooling for elements (e.g., fuel elements) that are not otherwise cooled, and also acts as radiation shielding. Maria use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
