On S′ Waves

Effect of Cold Drinking on Electrocardiogram Waves

La localisation et le delai d'apparition de changement de l'onde (T) a la suite de l'ingestion des boissens froide laisse supposer que le refroidissement se propage par con­tiguiter et n 'intresse que les couches superficielle de l'epi­carde. Ce qui peut expliquer !'apparition de l'onde (T) faiblement negative dans les derivation D3 et avf. 

On Nonlinear Water Waves in a Channel

Effects of radio waves on male fertility

In recent years, male fertility has changed due to the effects of environmental, health and lifestyle factors and the infertility rate has increased, to the extent that male fertility may be affected by extreme heat, exposure to pesticides, radiation, substances Changes in radioactivity, lifestyle, stress and occupation. In the environment, there are ionizing and non-ionizing rays whose effect...

Waves on glaciers

This paper is an attempt a t a mathematical synopsis of the theory of wave motions on glaciers. These comprise surface waves (analogous to water waves) and seasonal waves (more like compression waves). Surface waves have been often treated and are well understood, but seasonal waves, while observed, do not seem to have attracted any theoretical explanation. Additionally, the spectacular phenome...

On nonlinear population waves

We discuss a model system of partial differential equations for description of the spatiotemporal dynamics of interacting populations. We are interested in the waves caused by migration of the populations. We assume that the migration is a diffusion process influenced by the changing values of the birth rates and coefficients of interaction among the populations. For the particular case of one ...