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By 2012, the concentrations of Caesium-137, even in the coastal waters off the FDNPS site, were little above the levels prevailing before the accident. ... UNITED NATIONS SCIENTIFIC COMMITTEE ON THE EFFECTS OF ATOMIC RADIATION . On 11 March 2011, at 14.46 local time, a 9.0-magnitude earthquake occurred near Honshu, …
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INTRODUCTION The worst radiation accident in South America occurred in the city of Goiânia in Goias, Brazil, on September 13th, 1987. An abandoned telegraph machine was dismantled by a junkyard...
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Cesium-137 is used in small amounts for calibration of radiation detection equipment, such as Geiger-Mueller counters. In larger amounts, Cs-137 is used in: …
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External exposure to large amounts of Cs-137 can cause burns, acute radiation sickness and even death. Exposure to such a large amount could come from the mishandling of a strong industrial source of Cs-137, a nuclear detonation or a major nuclear accident. Large amounts of Cs-137 are not found in the environment under normal …
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The most common radioactive form of cesium is Cesium-137 (Cs-137). Cs-137 is produced by nuclear fission for use in medical devices and gauges. Cs- 137 is also one of the …
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The absorbed doses by gamma-photon radiation were from cesium-137 (137Cs) in soil contaminated by the two major NPP accidents. ... Contamination of Austrian soil with caesium-137. J. Environ ...
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Time is one of the three basic principles of radiation exposure. Hearing that cesium has a half-life of 30 years can be concerning. ... Half Lives. Physical Half Life is the time for a quantity of radioisotope to decay by half (Cs-137 = 30 years) Biological Half Life is the time for 1/2 of the amount of a radionuclide to be expelled from the ...
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The most common radioisotope of cesium is cesium-137. It emits beta and gamma radiation, decaying to stable barium-137. Cesium-137 is widely used in gamma sources. It occurs in these sources as cesium chloride pellets. Cesium chloride is a soluble salt. The contamination from a sealed-source leak absorbs water, becomes damp, and …
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Cesium-1137 (Cs-137) is produced by nuclear fissions for use in medical devices and gauges. It can cause burns, acute radiation sickness, and even death.
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Environmental radioactivity is present everywhere. Sometimes, anthropogenic activities may increase the background radiation level and persist for a long time in the environment. Radioactive contamination of food resources with long-lived 137Cs possess a continuous radiological hazard to human health. This review discusses …
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Caesium-137 (137 55Cs ), cesium-137 (US), or radiocaesium, is a radioactive isotope of caesium that is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fissionable isotopes in nuclear reactors and nuclear weapons. ... The radiation effects from the Fukushima Daiichi nuclear disaster are the ...
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The most common radioisotope of cesium is cesium-137. It emits beta and gamma radiation, decaying to stable barium-137. Cesium-137 is widely used in gamma sources. It occurs in these sources as cesium chloride pellets. Cesium chloride is a soluble salt. The contamination from a sealed-source leak absorbs water, becomes damp, and creeps.
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For example, if it was bottled before about 1945, there shouldn't be any cesium 137 — radioactive evidence of exploded nuclear bombs and the Atomic Age — in the wine. Sponsor Message But that ...
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The hepatic 137 Cs levels were reduced in all chelated dogs. Indirectly, Prussian blue will also mobilize 137 Cs from the bloodstream by intervening with its enterohepatic circulation . Le Gall et al. compared the 137 Cs-mobilizing effect of apple-pectin and Prussian blue in rats intravenously injected with 5 kBq of 137 Cs. The …
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The isotopes Strontium-90 and Caesium-137 are therefore still present in the area to this day. While iodine is linked to thyroid cancer, Strontium can lead to leukaemia. Caesium is the element that travelled the farthest and lasts the longest. This element affects the entire body and especially can harm the liver and spleen.
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Both 134 Cs and 137 Cs emit gamma radiation, and therefore, radioactive cesium is a health hazard. Highly penetrating gamma rays are the major …
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Caesium-137 (137 55 Cs), cesium-137 (US), [7] or radiocaesium, is a radioactive isotope of caesium that is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fissionable isotopes in nuclear reactors and nuclear weapons.Trace quantities also originate from spontaneous fission of uranium-238.It is …
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The main radionuclides to which individuals were exposed included iodine-131 (131 I) and caesium-137 (137 Cs). ... Doses of radiation have been estimated based on models and measurements for different representative groups of individuals of the Japanese population. The assessment of the doses included both external and internal (through ...
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On September 18, 1987, cesium‑137 is removed from an abandoned cancer‑therapy machine in Brazil. Hundreds of people were eventually poisoned by radiation from the substance, highlighting the ...
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Experts have warned that Caesium-137 can create serious health problems for people who come into contact with it: skin burns from close exposure, radiation sickness and potentially deadly cancer ...
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Radiation: Decay mode: Beta to Ba-137m ... 1.173 0.415 5 (Ba-137) Max. Beta Range in air 1300 cm or 42.7 ft Max. Beta Range in water 1.5 cm Avg. gamma E = 0.662 MeV Half – life: 30.17 years or 1.1E+04 days Gamma constant: 4.24 mR/hr per 1 mCi at 30 cm Radiological data: Min. Ingestion ALI: 100 µCi equals 5 rem TEDE (Whole …
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Since such doses are below the global average annual dose of 2.4 mSv from natural background radiation, the radiation exposures in countries distant from Chernobyl are considered to be of little radiological and public health significance. ... Currently, concentrations of radioactive caesium (Cs-137) in agricultural food products produced in ...
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Assessments of the radiation effects from the Chornobyl nuclear reactor accident. Summary. ... The radionuclides released from the reactor that caused exposure of individuals were mainly iodine-131, caesium-134 and caesium-137. Iodine-131 has a short radioactive half-life (eight days), but it can be transferred to humans relatively rapidly …
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The consumer exposure to ionising radiation from caesium-137 resulting from the consumption of one kg of a given product was calculated from the results. These calculations of the effective equivalent dose were used to determine the exposure (Table 3) as first described by Šprem et al. .
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137 Cs, as one of more than 30 isotopes of cesium, is fission a product of 235 U, whose decay chain is shown in Figure 1 [3,4]. 137 Cs decays to short-lived 137m …
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The radiation weighting factors are considered to be unity for the beta and gamma radiation emitted from 134 Cs and 137 Cs, so for these radionuclides, the absorbed dose (in rad or Gray) is equal to the dose …
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The test cannot tell if the radiation came from Cs- 137. The second type of test involves examining your blood, feces, saliva, urine, and body. It determines if Cs-137 is being excreted from or remains inside your body at levels higher than normal. Either the doctor's office collects and sends the samples to a special lab for testing, or you ...
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Inside is a small but dangerous amount of Caesium-137, a radioactive chemical element that can harm both people and nature. My research focuses on detecting human-caused radioactive elements in ...
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Radioactive materials like Caesium-137 produce beta and gamma radiation, both of which are harmful for humans. When exposed to them, short term risks include that of radiation poisoning (which can be …
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Barium-137, which is formed from caesium-137, also releases gamma radiation. Caesium-137 is an element of the alkali metal family (family 1 on the Periodic Table). Caesium is similar to potassium(K) (which also belongs to this family) and is able to replace it in living tissue.
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The barium-137 is generated in an excited state (what is referred to as "metastable"), but becomes stable after release of γ-radiation. Cesium-137 has a half-life of 30 years; for example, if 1000 cesium-137 atoms are present, then 500 of these will be transformed into barium-137 over a 30-year period.
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The implant was after-loaded with medium dose rate Cs(137) sources giving a dose of 45 Gy in daily four fractions of about 6 h duration. No external beam radiotherapy was given. Results: After a median follow-up of 6.3 years, of the 49 evaluable patients, 80% were alive without relapse. Of the 9 patients (18%) who developed a breast relapse ...
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WEBCesium-137 emits beta particles as it decays to the barium isotope, Ba-137m (half life = 2.6 minutes). How are people exposed to cesium-137? People may be exposed externally …
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For medical, fire or law enforcement assistance, call 911 For EH&S emergencies, including after hours, call (650) 725-9999
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Cesium-137 is a common radionuclide produced when nuclear fission of uranium and plutonium occurs in a reactor or atomic bomb. What are the uses of cesium-137? …
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Cesium-137 is an especially dangerous fission product because of its high yield during fission, moderate half-life, high-energy decay pathway, and chemical reactivity. Because …
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PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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