We examine various issues such as tree rearrangement, core tree migration and solutions for managing group dynamics in QoS multicast and outline several future research directions.

Based on the theoretical analysis of the values of the macrodispersivity and retardation coefficient,the radionuclide migration in groundwater at an uranium mill-tailing site in southern China was simulated with hydrogeochemical program PHREEQC Ⅱ.

An analysis of finite element model on nuclide migration in single fracture rock;

Finite element analysis of effects of three factors on nuclide migration under condition of coupling thermo-hydro-mechanical;

Application of GMS in saturated /unsaturated ground water flow and nuclide migration simulation

Multi-field coupling and nuclide transport in HLW geological disposal repository;

To assess how such changes may affect the nuclide transport behavior, the paper proposes a single fracture nuclide transport model under time-varying groundwater flow conditions based on t.

This paper describes safety assessment of the geological disposal system in the second progress report (H 12) in the Japanese R&D program for HLW disposal,the nuclide transport pathways in the geological repository,and the calculation of nuclide migration in the engineered barrier system,geosphere and biosphere.