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Nuclear transport refers to the mechanisms by which molecules move across the nuclear membrane of a cell. The entry and exit of large molecules from the cell nucleus ...
Neutron transport (also known as neutronics) is the study of the motions and interactions of neutrons with materials. Nuclear scientists and engineers often need to know where neutrons are in an apparatus, in what direction they are going, and how quickly they are moving.
According to the Nuclear Regulatory Commission(NRC), there are four different types of regulated nuclear materials: special nuclear material, source material, byproduct material and radium. [2] Special nuclear materials have plutonium, uranium-233 or uranium with U 233 or U 235 that has a content found more than in nature. Source material is ...
The nuclear pore complex (NPC), is a large protein complex giving rise to the nuclear pore. Nuclear pores are found in the nuclear envelope that surrounds the cell nucleus in eukaryotic cells . The nuclear envelope is studded by a great number of nuclear pores that give access to various molecules, to and from the nucleoplasm and the cytoplasm.
The Monte Carlo method for radiation particle transport has its origins at LANL dates back to 1946. [3] The creators of these methods were Stanislaw Ulam, John von Neumann, Robert Richtmyer, and Nicholas Metropolis. [4] Monte Carlo for radiation transport was conceived by Stanislaw Ulam in 1946 while playing Solitaire while recovering from an ...
The transport of LLW is regulated by two United States government agencies. The first is the United States Department of Transportation (USDOT) under the 1974 Transportation Safety Act (H.R. 15223), and second, the NRC under authority of the Atomic Energy Act of 1954 (42 U.S.C. § 2011) and the Energy Reorganization Act of 1974. [16]
The critical mass for any material is the smallest amount needed for a sustained nuclear chain reaction. Moreover, different isotopes have different critical masses, and the critical mass for many radioactive isotopes is infinite, because the mode of decay of one atom cannot induce similar decay of more than one neighboring atom.
CASTOR (cask for storage and transport of radioactive material) is a trademarked brand of dry casks used to store spent nuclear fuel (a type of nuclear waste). CASTORs are manufactured by Gesellschaft für Nuklear-Service (GNS), a German provider of nuclear services.