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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] |
Reaktor MARIA 2022
Reaktor is a graphical modular software music studio developed by Native Instruments (NI). It allows musicians and sound specialists to design and build their own instruments, samplers, effects and sound design tools. It is supplied with many ready-to-use instruments and effects, from emulations of classic synthesizers to futuristic sound design tools. In addition, more than 3000 free instruments can be downloaded from the growing User Library. All of Reaktor's instruments can be freely examined, customized or taken apart; Reaktor is a tool that effectively encourages reverse engineering. The free, limited version called Reaktor Player is software that allows musicians to play NI-released Reaktor instruments, but not edit or reverse-engineer them. Development history Early development In 1996, Native Instruments released Generator version 0.96 - a modular synthesizer for PC, requiring a proprietary audio card for low-latency operation. By 1998, Native Instruments redesigned the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutron Flux
The neutron flux, φ, is a scalar quantity used in nuclear physics and nuclear reactor physics. It is the total length travelled by all free neutrons per unit time and volume. Equivalently, it can be defined as the number of neutrons travelling through a small sphere of radius R in a time interval, divided by \pi R^2 (the cross section of the sphere) and by the time interval. The usual unit is cm−2s−1 (neutrons per centimeter squared per second). The neutron fluence is defined as the neutron flux integrated over a certain time period, so its usual unit is cm−2 (neutrons per centimeter squared). An older term used instead of cm−2 was n.v.t. (neutrons, velocity, time). Natural neutron flux Neutron flux in asymptotic giant branch stars and in supernovae is responsible for most of the natural nucleosynthesis producing elements heavier than iron. In stars there is a relatively low neutron flux on the order of 105 to 1011 cm−2 s−1, resulting in nucleosynthesis by the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Research Institutes
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Nuclear may refer to: Physics Relating to the nucleus of the atom: *Nuclear engineering *Nuclear physics *Nuclear power *Nuclear reactor *Nuclear weapon *Nuclear medicine *Radiation therapy *Nuclear warfare Mathematics *Nuclear space *Nuclear operator *Nuclear congruence *Nuclear C*-algebra Biology Relating to the nucleus of the cell: * Nuclear DNA Society *Nuclear family, a family consisting of a pair of adults and their children Music * "Nuclear" (band), group music. * "Nuclear" (Ryan Adams song), 2002 *"Nuclear", a song by Mike Oldfield from his ''Man on the Rocks'' album * ''Nu.Clear'' (EP) by South Korean girl group CLC See also *Nucleus (other) *Nucleolus *Nucleation *Nucleic acid *Nucular ''Nucular'' is a common, proscribed pronunciation of the word "nuclear". It is a rough phonetic spelling of . The ''Oxford English Dictionary''s entry dates the word's first published appearance to 1943. Dictionary notes This is one of two con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Research Reactors
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Nuclear may refer to: Physics Relating to the nucleus of the atom: *Nuclear engineering *Nuclear physics *Nuclear power *Nuclear reactor *Nuclear weapon *Nuclear medicine *Radiation therapy *Nuclear warfare Mathematics *Nuclear space *Nuclear operator *Nuclear congruence *Nuclear C*-algebra Biology Relating to the nucleus of the cell: * Nuclear DNA Society *Nuclear family, a family consisting of a pair of adults and their children Music * "Nuclear" (band), group music. * "Nuclear" (Ryan Adams song), 2002 *"Nuclear", a song by Mike Oldfield from his ''Man on the Rocks'' album * ''Nu.Clear'' (EP) by South Korean girl group CLC See also *Nucleus (other) *Nucleolus *Nucleation *Nucleic acid *Nucular ''Nucular'' is a common, proscribed pronunciation of the word "nuclear". It is a rough phonetic spelling of . The ''Oxford English Dictionary''s entry dates the word's first published appearance to 1943. Dictionary notes This is one of two con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Nuclear Reactors
A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby union club Other uses * Angle of list, the leaning to either port or starboard of a ship * List (information), an ordered collection of pieces of information ** List (abstract data type), a method to organize data in computer science * List on Sylt, previously called List, the northernmost village in Germany, on the island of Sylt * ''List'', an alternative term for ''roll'' in flight dynamics * To ''list'' a building, etc., in the UK it means to designate it a listed building that may not be altered without permission * Lists (jousting), the barriers used to designate the tournament area where medieval knights jousted * ''The Book of Lists'', an American series of books with unusual lists See also * The List (other) * Listing (di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Herald Tribune
The ''International Herald Tribune'' (''IHT'') was a daily English-language newspaper published in Paris, France for international English-speaking readers. It had the aim of becoming "the world's first global newspaper" and could fairly be said to have met that goal. It published under the name ''International Herald Tribune'' from 1967 to 2013. Early years In 1887, James Gordon Bennett Jr. created a Paris edition of his newspaper the '' New York Herald''. He called it the ''Paris Herald''. When Bennett Jr. died, the paper came under the control of Frank Munsey, who bought it along with its parent. In 1924, Munsey sold the paper to the family of Ogden Reid, owners of the ''New-York Tribune'', creating the '' New York Herald Tribune'', while the Paris edition became the ''Paris Herald Tribune''. By 1967, the paper was owned jointly by Whitney Communications, ''The Washington Post'' and ''The New York Times'', and became known as the ''International Herald Tribune'', or ''IHT'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petten Nuclear Reactor
The Petten High Flux Reactor (HFR), is a nuclear research reactor Research reactors are nuclear fission-based nuclear reactors that serve primarily as a neutron source. They are also called non-power reactors, in contrast to power reactors that are used for electricity production, heat generation, or maritim ... located in Petten, The Netherlands. The HFR is on the premises of the Petten research centre and it is a neutron flux, high flux reactor. It is owned by the Joint Research Centre, Joint Research Centre (JRC) and managed by the Nuclear Research and Consultancy Group, Nuclear Research and Consultancy Group (NRG). Medical importance Apart from its function as a research centre, the HFR is a large producer of radioactive material for the purpose of medical diagnosis and the treatment of cancer (radiopharmaceuticals). The nuclear facility supplies 60% of the European demand for medical isotopes. Also at the high flux reactor, one of the neutron beam channels, which was o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Research Universal Reactor
The National Research Universal (NRU) reactor was a 135 MW nuclear research reactor built in the Chalk River Laboratories, Ontario, one of Canada’s national science facilities. It was a multipurpose science facility that served three main roles. It generated radionuclides used to treat or diagnose over 20 million people in 80 countries every year (and, to a lesser extent, other isotopes used for non-medical purposes). It was the neutron source for the NRC Canadian Neutron Beam Centre: a materials research centre that grew from the Nobel Prize-winning work of Bertram Brockhouse. It was the test bed for Atomic Energy of Canada Limited to develop fuels and materials for the CANDU reactor. At the time of its retirement on March 31, 2018, it was the world's oldest operating nuclear reactor. History The NRU reactor design was started in 1949. It is fundamentally a Canadian design, significantly advanced from NRX. It was built as the successor to the NRX reactor at the Atomic Energy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Covidien
Covidien was an Irish-headquartered global health care products company and manufacturer of medical devices and supplies. Covidien became an independent publicly traded company after being spun off from Tyco International in 2007. It was purchased by Medtronic in a transaction that closed in 2015. The now-merged company is headquartered in Ireland, where Covidien was based. History In 2007, Covidien was formed when Tyco International spun off its health care business. In 2012, Covidien acquired Newport Medical Instruments, a small ventilator manufacturer supplier. Newport Medical Instruments had been contracted in 2006 by the U.S. Department of Health and Human Services' Biomedical Advanced Research and Development Authority to design a cheap, portable ventilator. At the time, Newport Medical Instruments had three working prototypes produced, and was on schedule to file for market approval late 2013. Covidien then effectively halted the project, subsequently exiting the cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medical Isotopes
A medical isotope is an isotope used in medicine. The first uses of isotopes in medicine were in radiopharmaceuticals, and this is still the most common use. However more recently, separated stable isotopes have also come into use. Examples of non-radioactive medical isotopes are: * Deuterium in deuterated drugs * Carbon-13 used in liver function and metabolic tests Radioactive isotopes used Radioactive isotopes are used in medicine for both treatment and diagnostic scans. The most common isotope used in diagnostic scans is Tc-99m (Technetium-99m), being used in approximately 85% of all nuclear medicine diagnostic scans worldwide. It is used for diagnoses involving a large range of body parts and diseases such as cancers and neurological problems. Another well-known radioactive isotope used in medicine is I-131 Iodine-131 (131I, I-131) is an important radioisotope of iodine discovered by Glenn Seaborg and John Livingood in 1938 at the University of California, Berkeley. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
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] |
