Radioactive element

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  • In 1961 the NCRP issued NCRP Report No. 28, A Manual of Radioactivity Procedures, which was published as the National Bureau of Standards Handbook 80. The report came to be one of the definitive works in the area of radioactivity measurements. As the development of new techniques, procedures, and equipment made parts of the Report obsolescent, the NCRP recognized the need to update and extend the document.

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  • Liquid waste from Nong Son uranium ore processing is treated with concentrated acid, agglomerated, leached, run through ion exchange and then treated with H2O2 to precipitate yellowcake. The liquid radioactive waste has a pH of 1.86 and a high content of radioactive elements, such as: [U] = 143.898 ppm and [Th] = 7.967 ppm. In addition, this waste contains many polluted chemical elements with high content, such as arsenic, mercury, aluminum, iron, zinc, magnesium, manganese and nickel. The application of the triditional method as one stage...

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  • This book covers new experimental and theoretical studies that focus on the modern developments of nuclear fission, aiming at various applications in a wide range of fields and bringing together scientists working in different fields related to nuclear fission.

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  • The state uses two forms to create Records Retention Schedules: the Records Retention Schedule Approval Request, STD Form 72 (pdf); and the Records Retention Schedule, STD Form 73 (pdf). The Form 72 contains signature elements from the agency involved, the Records Manager, the approval authority, and an archival review. The Form 73 is the schedule itself and contains an agency description or mission statement plus the listing of all agency records. Both of these forms are for state agencies but could easily be adapted/modified for use by local government.

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  • This book explores the diversity of topics related to radiometric dating, with particular emphasis on the method of radiocarbon dating and a cross-check of its results with luminescence measurements. Chemistry and the global carbon cycle is an essential element of life on Earth, because carbon is a component of every living cell, plants and animals. The radioactive isotope 14C was found useful for dating, for which in 1960 Willard Frank Libby received the Nobel Prize in Chemistry.

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  • Cerium, an element in the lanthanide series, has a number of radioactive isotopes. Several of these are produced in abundance in nuclear fission reactions associated with nuclear industry operations or detonation of nuclear devices. This report summarizes our present knowledge of the relevant physical, chemical, and biological properties of radiocerium as a basis for establishing radiation protection guidelines.

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  • In an era of spectacular medical advances, it is easy to become immune to the announcement of new “breakthroughs”. This in no way lessens the remarkable achievements of diagnostic imaging over the last few years in which the field of Nuclear Medicine has shared. To the outsider the specialty of Nuclear Medicine can appear confusing and esoteric since it operates in a world of invisible radioactive emissions, nuclear decay charts and obscure elements.

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