Results 21 to 30 of about 16,568 (299)
New 3D Diffusion Code Based on The Nodal Polynomial Expansion
Brazilian Journal of Radiation Sciences, 2021 Nodal Expansion Method (NEM) is widely employed in the neutronic design of nuclear reactors core. The main reason is its higher computational performance and efficiency when compared with the conventional fine mesh difference method or finite element ...
Jadna Mara Santos Mendes +2 more
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Variant of Green's Function Nodal Method for Neutron Diffusion [PDF]
Journal of Nuclear Science and Technology, 1990 A variant of the Green's function nodal method derived from the boundary integral form of the multigroup neutron diffusion equation in rectangular geometry is presented. As usual in the nodal methods, the multi-dimensional diffusion equation is integrated in the transverse direction.
TRKOV, A, NAJZER, M, SKERGET, L
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Use of Monte Carlo code MCS for multigroup cross section generation for fast reactor analysis
Nuclear Engineering and Technology, 2021 Multigroup cross section (MG XS) generation by the UNIST in-house Monte Carlo (MC) code MCS for fast reactor analysis using nodal diffusion codes is reported.
Tung Dong Cao Nguyen +2 more
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The pattern of nodal morphogen signaling is shaped by co-receptor expression
eLife, 2021 Embryos must communicate instructions to their constituent cells over long distances. These instructions are often encoded in the concentration of signals called morphogens.
Nathan D Lord +3 more
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Diffusion of Nodal Signaling Activity in the Absence of the Feedback Inhibitor Lefty2 [PDF]
Developmental Cell, 2001 The role of Lefty2 in left-right patterning was investigated by analysis of mutant mice that lack asymmetric expression of lefty2. These animals exhibited various situs defects including left isomerism. The asymmetric expression of nodal was prolonged and the expression of Pitx2 was upregulated in the mutant embryos.
Meno C. +9 more
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The Egyptian Journal of Radiology and Nuclear Medicine, 2021 Background Axillary nodal status is crucial for the management of cases with recently diagnosed breast cancer; usually addressed via axillary ultrasonography (US) along with tissue sampling in case of suspicion.
Dalia Salaheldin Elmesidy +4 more
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A variational nodal formulation for multi-dimensional unstructured neutron diffusion problems
Nuclear Engineering and Technology, 2023 A variational nodal method (VNM) with unstructured-mesh is presented for solving steady-state and dynamic neutron diffusion equations. Orthogonal polynomials are employed for spatial discretization, and the stiffness confinement method (SCM) is ...
Qizheng Sun +5 more
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Frontiers in Psychiatry, 2022 BackgroundTo evaluate brain white matter diffusion characteristics and anatomical network alterations in betel quid dependence (BQD) chewers using high angular resolution diffusion imaging (HARDI).MethodsThe current study recruited 53 BQD chewers and 37 ...
Weiyuan Huang +9 more
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Yuanzineng kexue jishu, 2022 Hexagonal fuel assemblies are widely used in liquid metal-cooled fast reactors (LMFR). The design and safety analysis of these reactors require three-dimensional full-core coupling calculations of neutron fluxes and currents in the core.
LU Daogang;LYU Siyu;SUI Danting;GUO Jinsong
doaj
Verification of a two-step code system MCS/RAST-F to fast reactor core analysis
Nuclear Engineering and Technology, 2022 RAST-F is a new full-core analysis code based on the two-step approach that couples a multi-group cross-section generation Monte-Carlo code MCS and a multi-group nodal diffusion solver.
Tuan Quoc Tran +3 more
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