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Sievert

Index Sievert

The sievert (symbol: SvNot be confused with the sverdrup or the svedberg, two non-SI units that sometimes use the same symbol.) is a derived unit of ionizing radiation dose in the International System of Units (SI) and is a measure of the health effect of low levels of ionizing radiation on the human body. [1]

117 relations: Absorbed dose, Acute radiation syndrome, Albert Stevens, Alpha particle, American Nuclear Society, Atomic nucleus, Banana equivalent dose, Becquerel, Beta particle, Boiling water reactor, Bone, Bone marrow, Brady Haran, Brain, Breast, Causality, Cecil Kelley criticality accident, Cellular respiration, Centimetre–gram–second system of units, Code of Federal Regulations, Committed dose, Computational human phantom, Conservation of energy, Counts per minute, Criticality accident, CT scan, Curie, Dental radiography, Determinism, Dosimeter, Dosimetry, Effective dose (radiation), Epidemiology, Epidemiology of cancer, Equivalent dose, Esophagus, European Union, European units of measurement directives, Flight attendant, Fly ash, Fukushima Daiichi nuclear disaster, Fusion power, Gamma ray, Goiânia accident, Gonad, Granite, Gray (unit), Guarapari, Harry Daghlian, Human radiation experiments, ..., International Commission on Radiation Units and Measurements, International Commission on Radiological Protection, International Committee for Weights and Measures, International System of Units, Ionising Radiations Regulations 1999, Ionizing radiation, Joule, Kerma (physics), Kilogram, Large intestine, Linear energy transfer, Linear no-threshold model, List of cancer mortality rates in the United States, Liver, Louis Slotin, Lung, Mammography, Manhattan Project, Metre, Metric prefix, Monazite, Muon, Naraha, Fukushima, Neutron, Nuclear fallout, Nuclear fission product, Nuclear meltdown, Pion, Plasma-facing material, Pressurized water reactor, Proton, Rad (unit), Radiant exposure, Radiation exposure, Radiation protection, Radiation-induced cancer, Radioactive decay, Ramsar, Mazandaran, Randomness, Relative biological effectiveness, Roentgen equivalent man, Rolf Maximilian Sievert, Rutherford (unit), Salivary gland, Second, SI base unit, SI derived unit, Skin, Soviet submarine K-19, Stochastic, Stomach, Svedberg, Sverdrup, Sweden, Three Mile Island accident, Thyroid, Time derivative, Tokaimura nuclear accident, Trinity (nuclear test), United Kingdom, United Nations Scientific Committee on the Effects of Atomic Radiation, United States, United States Capitol, University of Nottingham, Upper gastrointestinal series, Urinary bladder, X-ray. Expand index (67 more) »

Absorbed dose

Absorbed dose is a measure of the energy deposited in a medium by ionizing radiation.

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Acute radiation syndrome

Acute radiation syndrome (ARS) is a collection of health effects that are present within 24 hours of exposure to high doses of ionizing radiation.

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Albert Stevens

Albert Stevens (1887–1966), also known as patient CAL-1, was a victim of a human radiation experiment, and survived the highest known accumulated radiation dose in any human.

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Alpha particle

Alpha particles consist of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus.

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American Nuclear Society

The American Nuclear Society (ANS) is an international, not-for-profit 501(c)(3) scientific and educational organization with a membership of approximately 11,000 scientists, engineers, educators, students, and other associate members.

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Atomic nucleus

The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.

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Banana equivalent dose

Banana equivalent dose (BED) is an informal measurement of ionizing radiation exposure, intended as a general educational example to compare a dose of radioactivity to the dose one is exposed to by eating one average-sized banana.

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Becquerel

The becquerel (symbol: Bq) is the SI derived unit of radioactivity.

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Beta particle

A beta particle, also called beta ray or beta radiation, (symbol β) is a high-energy, high-speed electron or positron emitted by the radioactive decay of an atomic nucleus during the process of beta decay.

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Boiling water reactor

The boiling water reactor (BWR) is a type of light water nuclear reactor used for the generation of electrical power.

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Bone

A bone is a rigid organ that constitutes part of the vertebrate skeleton.

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Bone marrow

Bone marrow is a semi-solid tissue which may be found within the spongy or cancellous portions of bones.

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Brady Haran

Brady John Haran (born 18 June 1976) is an Australian-born British independent filmmaker and video journalist who is known for his educational videos and documentary films produced for BBC News and his YouTube channels, the most notable being Periodic Videos and Numberphile.

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Brain

The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals.

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Breast

The breast is one of two prominences located on the upper ventral region of the torso of primates.

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Causality

Causality (also referred to as causation, or cause and effect) is what connects one process (the cause) with another process or state (the effect), where the first is partly responsible for the second, and the second is partly dependent on the first.

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Cecil Kelley criticality accident

A criticality accident occurred on December 30, 1958, at the Los Alamos National Laboratory in Los Alamos, New Mexico, in the United States.

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Cellular respiration

Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.

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Centimetre–gram–second system of units

The centimetre–gram–second system of units (abbreviated CGS or cgs) is a variant of the metric system based on the centimetre as the unit of length, the gram as the unit of mass, and the second as the unit of time.

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Code of Federal Regulations

The Code of Federal Regulations (CFR) is the codification of the general and permanent rules and regulations (sometimes called administrative law) published in the Federal Register by the executive departments and agencies of the federal government of the United States.

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Committed dose

The committed dose in radiological protection is a measure of the stochastic health risk due to an intake of radioactive material into the human body.

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Computational human phantom

Photo courtesy of Dr.

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Conservation of energy

In physics, the law of conservation of energy states that the total energy of an isolated system remains constant, it is said to be ''conserved'' over time.

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Counts per minute

The measurement of ionizing radiation is sometimes expressed as being a rate of counts per unit time as registered by a radiation monitoring instrument, for which counts per minute (cpm) and counts per second (cps) are commonly used quantities.

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Criticality accident

A criticality accident is an uncontrolled nuclear fission chain reaction.

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CT scan

A CT scan, also known as computed tomography scan, makes use of computer-processed combinations of many X-ray measurements taken from different angles to produce cross-sectional (tomographic) images (virtual "slices") of specific areas of a scanned object, allowing the user to see inside the object without cutting.

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Curie

The curie (symbol Ci) is a non-SI unit of radioactivity originally defined in 1910.

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Dental radiography

Dental radiographs are commonly called X-rays.

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Determinism

Determinism is the philosophical theory that all events, including moral choices, are completely determined by previously existing causes.

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Dosimeter

A radiation dosimeter is a device that measures exposure to ionizing radiation.

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Dosimetry

Radiation dosimetry in the fields of health physics and radiation protection is the measurement, calculation and assessment of the ionizing radiation dose absorbed by the human body.

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Effective dose (radiation)

Effective dose is a dose quantity in the International Commission on Radiological Protection (ICRP) system of radiological protection.

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Epidemiology

Epidemiology is the study and analysis of the distribution (who, when, and where) and determinants of health and disease conditions in defined populations.

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Epidemiology of cancer

The epidemiology of cancer is the study of the factors affecting cancer, as a way to infer possible trends and causes.

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Equivalent dose

Equivalent dose is a dose quantity H representing the stochastic health effects of low levels of ionizing radiation on the human body.

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Esophagus

The esophagus (American English) or oesophagus (British English), commonly known as the food pipe or gullet (gut), is an organ in vertebrates through which food passes, aided by peristaltic contractions, from the pharynx to the stomach.

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European Union

The European Union (EU) is a political and economic union of EUnum member states that are located primarily in Europe.

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European units of measurement directives

As of 2009, the European Union had issued two units of measurement directives: In 1971 it issued Directive 71/354/EEC which required EU member states to standardise on the International System of Units (SI) rather than use a variety of CGS and MKS units then in use.

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Flight attendant

Flight attendants or cabin crew (also known as stewards/stewardesses, air hosts/hostesses, cabin attendants) are members of an aircrew employed by airlines primarily to ensure the safety and comfort of passengers aboard commercial flights, on select business jet aircraft, and on some military aircraft.

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Fly ash

Fly ash, also known as "pulverised fuel ash" in the United Kingdom, is a coal combustion product that is composed of the particulates (fine particles of burned fuel) that are driven out of coal-fired boilers together with the flue gases.

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Fukushima Daiichi nuclear disaster

The was an energy accident at the Fukushima Daiichi Nuclear Power Plant in Ōkuma, Fukushima Prefecture, initiated primarily by the tsunami following the Tōhoku earthquake on 11 March 2011.

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Fusion power

Fusion power is a form of power generation in which energy is generated by using fusion reactions to produce heat for electricity generation.

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Gamma ray

A gamma ray or gamma radiation (symbol γ or \gamma), is penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei.

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Goiânia accident

The Goiânia accident was a radioactive contamination accident that occurred on September 13, 1987, at Goiânia, in the Brazilian state of Goiás, after a forgotten radiotherapy source was taken from an abandoned hospital site in the city.

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Gonad

A gonad or sex gland or reproductive gland is a mixed gland that produces the gametes (sex cells) and sex hormones of an organism.

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Granite

Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture.

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Gray (unit)

The gray (symbol: Gy) is a derived unit of ionizing radiation dose in the International System of Units (SI).

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Guarapari

Guarapari is a coastal town of Espírito Santo, Brazil, a popular tourist destination.

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Harry Daghlian

Haroutune Krikor "Harry" Daghlian Jr. (May 4, 1921 – September 15, 1945) was a physicist with the Manhattan Project which designed and produced the atomic bombs that were used in World War II.

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Human radiation experiments

Since the discovery of ionizing radiation, a number of human radiation experiments have been performed to understand the effects of ionizing radiation and radioactive contamination on the human body, specifically with the element plutonium.

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International Commission on Radiation Units and Measurements

The International Commission on Radiation Units and Measurements (ICRU) is a standardization body set up in 1925 by the International Congress of Radiology, originally as the X-Ray Unit Committee until 1950.

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International Commission on Radiological Protection

The International Commission on Radiological Protection (ICRP) is an independent, international, non-governmental organization, with the mission to provide recommendations and guidance on radiation protection.

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International Committee for Weights and Measures

The International Committee for Weights and Measures (abbreviated CIPM from the French Comité international des poids et mesures) consists of eighteen persons, each of a different nationality, from Member States of the Metre Convention (Convention du Mètre) appointed by the General Conference on Weights and Measures (CGPM) whose principal task is to promote worldwide uniformity in units of measurement by taking direct action or by submitting proposals to the CGPM.

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International System of Units

The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.

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Ionising Radiations Regulations 1999

On 1 January 2018 the Ionising Radiations Regulations 1999 (IRR99) were superseded by the.

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Ionizing radiation

Ionizing radiation (ionising radiation) is radiation that carries enough energy to liberate electrons from atoms or molecules, thereby ionizing them.

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Joule

The joule (symbol: J) is a derived unit of energy in the International System of Units.

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Kerma (physics)

Kerma is an acronym for "kinetic energy released per unit mass", defined as the sum of the initial kinetic energies of all the charged particles liberated by uncharged ionizing radiation (i.e., indirectly ionizing radiation such as photons and neutrons) in a sample of matter, divided by the mass of the sample.

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Kilogram

The kilogram or kilogramme (symbol: kg) is the base unit of mass in the International System of Units (SI), and is defined as being equal to the mass of the International Prototype of the Kilogram (IPK, also known as "Le Grand K" or "Big K"), a cylinder of platinum-iridium alloy stored by the International Bureau of Weights and Measures at Saint-Cloud, France.

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Large intestine

The large intestine, also known as the large bowel or colon, is the last part of the gastrointestinal tract and of the digestive system in vertebrates.

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Linear energy transfer

In dosimetry, linear energy transfer (LET) is the amount of energy that an ionizing particle transfers to the material traversed per unit distance.

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Linear no-threshold model

The linear no-threshold model (LNT) is a model used in radiation protection to quantify radiation exposure and set regulatory limits.

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List of cancer mortality rates in the United States

Different types of cancer can vary wildly in their prognosis.

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Liver

The liver, an organ only found in vertebrates, detoxifies various metabolites, synthesizes proteins, and produces biochemicals necessary for digestion.

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Louis Slotin

Louis Alexander Slotin (1 December 1910 – 30 May 1946) was a Canadian physicist and chemist who worked on the Manhattan Project.

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Lung

The lungs are the primary organs of the respiratory system in humans and many other animals including a few fish and some snails.

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Mammography

Mammography (also called mastography) is the process of using low-energy X-rays (usually around 30 kVp) to examine the human breast for diagnosis and screening.

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Manhattan Project

The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons.

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Metre

The metre (British spelling and BIPM spelling) or meter (American spelling) (from the French unit mètre, from the Greek noun μέτρον, "measure") is the base unit of length in some metric systems, including the International System of Units (SI).

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Metric prefix

A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or fraction of the unit.

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Monazite

Monazite is a reddish-brown phosphate mineral containing rare-earth metals.

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Muon

The muon (from the Greek letter mu (μ) used to represent it) is an elementary particle similar to the electron, with an electric charge of −1 e and a spin of 1/2, but with a much greater mass.

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Naraha, Fukushima

is a town located in Fukushima Prefecture, Japan.

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Neutron

| magnetic_moment.

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Nuclear fallout

Nuclear fallout, or simply fallout, is the residual radioactive material propelled into the upper atmosphere following a nuclear blast, so called because it "falls out" of the sky after the explosion and the shock wave have passed.

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Nuclear fission product

Nuclear fission products are the atomic fragments left after a large atomic nucleus undergoes nuclear fission.

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Nuclear meltdown

A nuclear meltdown (core melt accident or partial core melt) is a severe nuclear reactor accident that results in core damage from overheating.

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Pion

In particle physics, a pion (or a pi meson, denoted with the Greek letter pi) is any of three subatomic particles:,, and.

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Plasma-facing material

In nuclear fusion power research, the plasma-facing material (or materials) (PFM) is any material used to construct the plasma-facing components (PFC), those components exposed to the plasma within which nuclear fusion occurs, and particularly the material used for the lining or first wall of the reactor vessel.

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Pressurized water reactor

Pressurized water reactors (PWRs) constitute the large majority of the world's nuclear power plants (notable exceptions being the United Kingdom, Japan, and Canada) and are one of three types of light water reactor (LWR), the other types being boiling water reactors (BWRs) and supercritical water reactors (SCWRs).

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Proton

| magnetic_moment.

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Rad (unit)

The rad is a unit of absorbed radiation dose, defined as 1 rad.

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Radiant exposure

In radiometry, radiant exposure or fluence is the radiant energy received by a surface per unit area, or equivalently the irradiance of a surface, integrated over time of irradiation, and spectral exposure or is the radiant exposure per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength.

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Radiation exposure

Radiation exposure is a measure of the ionization of air due to ionizing radiation from photons; that is, gamma rays and X-rays.

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Radiation protection

Radiation protection, sometimes known as radiological protection, is defined by the International Atomic Energy Agency (IAEA) as "The protection of people from harmful effects of exposure to ionizing radiation, and the means for achieving this".

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Radiation-induced cancer

Up to 10% of invasive cancers are related to radiation exposure, including both ionizing radiation and non-ionizing radiation.

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Radioactive decay

Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron in the case of internal conversion.

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Ramsar, Mazandaran

Ramsar (رامسر, also Romanized as Rāmsar and Rānsar; formerly, Sakht Sar) is the capital of Ramsar County, Mazandaran Province, Iran.

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Randomness

Randomness is the lack of pattern or predictability in events.

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Relative biological effectiveness

In radiobiology, the relative biological effectiveness (often abbreviated as RBE) is the ratio of biological effectiveness of one type of ionizing radiation relative to another, given the same amount of absorbed energy.

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Roentgen equivalent man

The roentgen equivalent man (or rem) is an older, CGS unit of equivalent dose, effective dose, and committed dose which are measures of the health effect of low levels of ionizing radiation on the human body.

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Rolf Maximilian Sievert

Rolf Maximilian Sievert (6 May 1896 – 3 October 1966) was a Swedish medical physicist whose major contribution was in the study of the biological effects of ionizing radiation.

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Rutherford (unit)

The rutherford (symbol Rd) is a non-SI unit of radioactive decay.

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Salivary gland

The salivary glands in mammals are exocrine glands that produce saliva through a system of ducts.

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Second

The second is the SI base unit of time, commonly understood and historically defined as 1/86,400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each.

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SI base unit

The International System of Units (SI) defines seven units of measure as a basic set from which all other SI units can be derived.

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SI derived unit

SI derived units are units of measurement derived from the seven base units specified by the International System of Units (SI).

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Skin

Skin is the soft outer tissue covering vertebrates.

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Soviet submarine K-19

K-19 was one of the first two Soviet submarines of the Project 658 class (NATO reporting name), the first generation nuclear submarine equipped with nuclear ballistic missiles, specifically the R-13 SLBM.

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Stochastic

The word stochastic is an adjective in English that describes something that was randomly determined.

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Stomach

The stomach (from ancient Greek στόμαχος, stomachos, stoma means mouth) is a muscular, hollow organ in the gastrointestinal tract of humans and many other animals, including several invertebrates.

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Svedberg

A svedberg unit (symbol S, sometimes Sv) is a non-metric unit for sedimentation rate.

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Sverdrup

In oceanography, a sverdrup (symbol: Sv) is a non-SI unit of flow, with equal to.

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Sweden

Sweden (Sverige), officially the Kingdom of Sweden (Swedish), is a Scandinavian country in Northern Europe.

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Three Mile Island accident

The Three Mile Island accident occurred on March 28, 1979, in reactor number 2 of Three Mile Island Nuclear Generating Station (TMI-2) in Dauphin County, Pennsylvania, near Harrisburg.

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Thyroid

The thyroid gland, or simply the thyroid, is an endocrine gland in the neck, consisting of two lobes connected by an isthmus.

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Time derivative

A time derivative is a derivative of a function with respect to time, usually interpreted as the rate of change of the value of the function.

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Tokaimura nuclear accident

There have been two Tokaimura nuclear accidents at the nuclear facility at Tōkai, Ibaraki.

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Trinity (nuclear test)

Trinity was the code name of the first detonation of a nuclear weapon.

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United Kingdom

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain,Usage is mixed with some organisations, including the and preferring to use Britain as shorthand for Great Britain is a sovereign country in western Europe.

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United Nations Scientific Committee on the Effects of Atomic Radiation

The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) was set up by resolution of the United Nations General Assembly in 1955.

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United States

The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.

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United States Capitol

The United States Capitol, often called the Capitol Building, is the home of the United States Congress, and the seat of the legislative branch of the U.S. federal government.

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University of Nottingham

The University of Nottingham is a public research university in Nottingham, United Kingdom.

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Upper gastrointestinal series

An upper gastrointestinal series, also called an upper gastrointestinal study or contrast radiography of the upper gastrointestinal tract, is a series of radiographs used to examine the gastrointestinal tract for abnormalities.

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Urinary bladder

The urinary bladder is a hollow muscular organ in humans and some other animals that collects and stores urine from the kidneys before disposal by urination.

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X-ray

X-rays make up X-radiation, a form of electromagnetic radiation.

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Redirects here:

Gigasievert, Kilosievert, MSv, Megasievert, Microsievert, Microsieverts, Milisievert, MilliSievert, Millisievert, Millisieverts, Nanosievert, Picosievert, Seivert, Sievert (Sv), Sievert (unit), Terasievert, USv, ΜSv, ΜSv/h, .

References

[1] https://en.wikipedia.org/wiki/Sievert

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