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A mathematical model describing the interactions between viral infection and acquired immunity is proposed. The model is formulated in terms of a system of partial integro-differential bilinear equations. Results of numerical experiments are presented. [ABSTRACT FROM AUTHOR]

We present a mathematical model of cellular immune response to viral infection. The model is a bilinear system of integro-differential equations of Boltzmann type. Results of numerical experiments are presented. [ABSTRACT FROM AUTHOR]

The Water Framework Directive 2000/60/EC establishes the quality objective of water bodies. Modeling is presented as a necessary scientific and technical support for the water quality and quantity simulation for the evaluation of the achievement of the objectives through the adopted intervention measures. The Italian context is highlighted and an example of numerical modeling that supplements monitoring is given. [ABSTRACT FROM AUTHOR]

A 3-D finite element model is used to simulate water jet spot welding. The simulation is validated using the experimental data obtained by one of authors with other workers. The simulations identify parameters which correlate well with the quality of the welds produced. In particular the levels of equivalent plastic strain (PEEQ) and shear stress directions are shown to predict whether or not two materials will weld well together. [ABSTRACT FROM AUTHOR]

The COSINUS database is an internet oriented documentation of the laboratory, field and numerical data collected during the COSINUS project. It contains information about hydrodynamics, turbulence und transport including sediment properties and concentrations as well as information on the instrumentation used, date-processing etc. The results of numerical simulations for a number of test cases are stored in the database for use as a benchmark or inter-comparison with other models. In this paper, the structure of the database is described and its content summarized. [ABSTRACT FROM AUTHOR]

The development of a dispersion model of a trailer hopper suction dredger is described that incorporates sub-models of the trailer hopper process and of the descent and collapse of the dynamic plume. This identifies the shape and magnitude of the source terms of release of fine sediment into the water column and onto the bed. The nature of these source terms is updated with time and the changing hydrodynamics. The release source terms are passed to a passive plume sub-model which is a Lagrangian random walk approach and tracks the three-dimensional movement of sediment particles over time and space. The effects of using such a process based approach are illustrated using a basic example. The need for high quality validation data requires comprehensive field measurements of the plumes arising from trailer dredging. A recent measurement campaign undertaken at Rotterdam Port is briefly described. [ABSTRACT FROM AUTHOR]