radioactive isotopes
DOSAGE DETERMINATION IN THE USE OF RADIOACTIVE ISOTOPES
... Two extensive tables are presented, for beta and gamma rays respectively, giving half life, radiation average energy, fraction disintegrating per day, and specific dosage data, including[r] ...
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BIOLOGICAL HAZARDS AND TOXICITY OF RADIOACTIVE ISOTOPES
... The data shown in Figure 2 may be interpreted in this way: that each quantity of absorbed radiation confers on the tissue absorbing it a probability of tumor formation which is without l[r] ...
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PERSONNEL PROTECTION IN THE USE OF RADIOACTIVE ISOTOPES
... In making a survey for scattered radiation in the case of a source not completely surrounded by lead, it should be remembered that the dosage rate may be highest in regions located at co[r] ...
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Water and carbon dioxide loss from the cockroach Periplaneta americana (L ) measured using radioactive isotopes
... The efflux rate constant for 14CO2 kCO∑ can be used to calculate the CO2 output from the insect and, if it is assumed that CO2 is lost from the insect only by ventilation of the tracheal[r] ...
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Measurement of water and carbon dioxide loss from insects using radioactive isotopes
... The early use of isotopic water (deuterated water, DHO) to investigate water permeability in animals is outlined by Krogh (1939) and includes an aquatic insect example (Libellula). Isotopic water exchange in terrestrial ...
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Radioactive Waste Management
... Activities: Radioactive wastes are also generated in R&D activities using research reactors, accelerators and radioactive ...Similarly radioactive wastes are generated in radio isotopes ...
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Euratom Bulletin September 1963 No 3
... Since the detection of radioactive Isotopes Is not affected by their chemical and physical state, nor, w i t h i n certain limits, by sub stances present elsewhere, radionuclides can be[r] ...
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Cerebral hemodynamics in arteriovenous malformations: evaluation by single photon emission CT
... We studied cerebral hemodynamics in patients with AVMs using single-photon emission CT SPECT with three types of radioactive isotopes: N-isopropyl-p-[' 231] iodoamphetamine, 81mKr, and 9[r] ...
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Assessment of Ingestion Dose and Lifetime Cancer Risk through Marine Food Samples of South West Coast of Kerala
... Radioactive isotopes of elements (radionuclides) are naturally present in the environment. Humans are exposed to environmental radiation through inhalation of dusts (contaminated with radiation) and gases, ...
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IRON ABSORPTION MEASUREMENT OF INGESTED IRON59 BY A HUMAN WHOLE BODY LIQUID SCINTILLATION COUNTER
... The availability of radioactive isotopes of iron eral parameters had become normal at a time when one led to the development of reliable methods of could be sure from the history, amount[r] ...
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How Old is Earth, and How Do We Know?
... use radioactive isotopes of much greater half-life (Table ...the radioactive parent and stable daughter elements to determine how many radioactive nuclei were present at the ...
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A Review of Sequential Extraction Method for Lead in Samples: A Case Study of Artisanal Mines of Sokoto Basin (Zamfara State)
... emitting radioactive isotopes known to have drawn global attention in Zamfara state and recently in Niger state all in Nigeria for poisoning thousands of villagers and leading to numerous death ...
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Cosmogenic Activation: Recent Results
... rameterisations from Refs. [14, 15]) with TENDL-2014 (from TALYS [19]) and with cross-sections used in GEANT4. A reasonable agreement has been observed between GEANT4 and TENDL-2014 libraries whereas semi-empirical ...
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Intrinsic Efficiency Calibration for Uranium Isotopic Analysis in Soil Samples
... The gamma spectrometry were employed to determine the activity ratios 238 U/ 226 Ra and 235 U/ 238 U in the geological and soil samples [2]. The our purpose is to use a gamma-spectroscopy with HPGe detector and intrinsic ...
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Clinical efficacy of computed tomography-guided iodine-125 seed implantation therapy in patients with advanced spinal metastatic tumors
... of radioactive isotopes for the treatment of spinal metastatic tumors can alleviate pain, preserve or improve neurologic function, achieve mechanical stability, optimize local tumor control, and improve ...
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Hazards of Radioactive Fallout
... Report of the’ United Nations Scientific Corn- mittee on the Effects of Atomic Radiation, General Assembly, United Nations, 1962,. Fallout Surveillance and Protection, U.S[r] ...
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Fusion and the Discovery of Isotopes
... new isotopes is the first and necessary step towards the study and exploration of more and more exotic ...ferent isotopes have been discovered until ...the isotopes. The compilation revealed that ...
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SIGNIFICANT ISOTOPES IN FOODS
... have a higher food intake per unit body weight than the adult, so that proportional- ly more fallout products are consumed. The[r] ...
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Atomic Theory&Isotopes
... Isotopes of an element have the same chemical properties because they have the same number of electrons. When a chemical reaction takes place, it is the electrons that are involved in the reactions. However ...
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Introduction to Radioactive Materials
... Plutonium-239 is an isotope of plutonium. Plutonium- 239 is the primary fissile isotope used for the production of nuclear weapons, although uranium-235 has also been used. Plutonium-239 is also one of the three main ...
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