The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
Displaying 61 –
80 of
159
Spatial dynamics of fibrin clot formation in non-stirred system activated by glass
surface was studied as a function of FIX activity. Haemophilia B plasma was obtained from
untreated patients with different levels of FIX deficiency and from severe haemophilia B patient
treated with FIX concentrate (Ahemphil B) during its clearance with half-life t1/2=12 hours. As
reported previously (Ataullakhanov et al. Biochim Biophys Acta 1998; 1425: 453-468), clot
growth in space showed two distinct phases:...
We consider a broad class of stochastic lattice predator-prey models whose main features are overviewed. In particular, this article aims at drawing a picture of the influence of spatial fluctuations, which are not accounted for by the deterministic rate equations, on the properties of the stochastic models. Here, we outline the robust scenario obeyed by most of the lattice predator-prey models with an interaction à la Lotka-Volterra. We also show how a drastically different behavior can emerge...
In this paper, we investigate the complex dynamics of a spatial plankton-fish system with
Holling type III functional responses. We have carried out the analytical study for both
one and two dimensional system in details and found out a condition for diffusive
instability of a locally stable equilibrium. Furthermore, we present a theoretical
analysis of processes of pattern formation that involves organism distribution and their
interaction of spatially...
In this paper we investigate the role of spatial effects in determining the
dynamics
of a subclass of signalling pathways characterised by their ability to
demonstrate
oscillatory behaviour. To this end, we formulate a simple spatial model of the
p53
network that accounts for both a negative feedback and a transcriptional delay.
We show that the formation of protein density patterns can depend on the shape
of the cell, position of the nucleus, and the protein diffusion rates. The
temporal...
Mechanisms contributing to the spread of avian influenza seem to be well identified, but
how their interplay led to the current worldwide spread pattern of H5N1 influenza is still unknown
due to the lack of effective global surveillance and relevant data. Here we develop some deterministic
models based on the transmission cycle and modes of H5N1 and focusing on the interaction
among poultry, wild birds and environment. Some of the model parameters are obtained from
existing literatures, and others...
In order to better understand the dynamics of acute leukemia, and in particular to find
theoretical conditions for the efficient delivery of drugs in acute myeloblastic leukemia,
we investigate stability of a system modeling its cell dynamics. The overall system is a cascade connection of sub-systems consisting of distributed
delays and static nonlinear feedbacks. Earlier results on local asymptotic stability are
improved by the analysis of the linearized...
Currently displaying 61 –
80 of
159