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COMPTE RENDUS D'ACTIVITE --- GEOLOGIE APPLIQUEE --- COMPTE RENDUS D'ACTIVITE --- GEOLOGIE APPLIQUEE

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Dynamical systems theory in mathematical biology has attracted much attention from many scientific directions. The purpose of this volume is to present and discuss the many rich properties of the dynamical systems that appear in life science and medicine. The main topics include cancer treatment, dynamics of paroxysmal tachycardia, vector disease models, epidemic diseases and metapopulations, immune systems, pathogen competition and coexistence and the evolution of virulence and the rapid evolution of viruses within a host. Each chapter will serve to introduce students and scholars to the state-of-the-art in an exciting area, to present new results, and to inspire future contributions to mathematical modeling in life science and medicine.

Biomathematics. --- Population biology --- Medicine --- Mathematics. --- Medical mathematics --- Biology --- Mathematics --- Immunology. --- Virology. --- Biophysics. --- Biological physics. --- Statistical physics. --- Dynamical systems. --- Mathematical and Computational Biology. --- Physiological, Cellular and Medical Topics. --- Statistical Physics, Dynamical Systems and Complexity. --- Biophysics and Biological Physics. --- Dynamical systems --- Kinetics --- Mechanics, Analytic --- Force and energy --- Mechanics --- Physics --- Statics --- Mathematical statistics --- Biological physics --- Medical sciences --- Microbiology --- Immunobiology --- Life sciences --- Serology --- Math --- Science --- Statistical methods --- Ecology --- Health Workforce

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Early environmental stimuli have been shown to affect many aspects of physiological and behavioral development in humans and other mammals. In this study, we investigated the effects of early weaning on behavioral traits in adulthood. Mate and female Balb/c mice were divided into two groups, one weaned from the dam at 14 days of age (early-weaned group) and the other weaned at 21 days of age (normally weaned group), as a control. At 8 and 22 weeks of age, animals of both groups were subjected to the plus maze test to assess their anxiety levels. The early-weaned mice showed lower frequency of entry into the open arms of the maze. Although a subsequent isolation-induced aggression test revealed no clear differences between the two groups, when males from each of the two weaning groups were regrouped after 1 month of isolation, the early-weaned animals showed a great number of wounds on their tails and hindquarters. These results suggest that the deprivation of mother-pup interaction from 14 through 21 postnatal days augments anxiety and aggressiveness. (C) 2004 Elsevier Inc. All rights reserved

Adult. --- Adulthood. --- Age. --- Aggression. --- Aggressiveness. --- Animal. --- Animals. --- Anxiety and aggression. --- Anxiety. --- Behavioral development. --- Behavioral-development. --- Control. --- Deprivation. --- Development. --- Dual-chambered cages. --- Early separation. --- Early weaning. --- Elevated plus-maze. --- Environmental stimuli. --- Ethopharmacological analysis. --- Female. --- Frequency. --- Gene-expression. --- Group. --- Human. --- Humans. --- Individual-differences. --- Interaction. --- Isolation. --- Level. --- Male. --- Males. --- Mammals. --- Maternal-care. --- Mice. --- Physiological. --- Preweanling rat. --- Social-factors. --- Stimuli. --- Stress reactivity. --- Test. --- Time. --- Weaning.