Despite considerable increased pesticide use over the past decades, little research has been done into their fate and effects in surface waters in tropical regions. In the present review, possible differences in response between temperate and tropical freshwaters to pesticide stress are discussed. Three underlying mechanisms for these differences are distinguished: (1) climate related parameter...

Dear Editor, Stroke is an important medical problem that requires good management. In medicine, stroke is the most common cause of disability around the world. The recent report on infective stroke is very interesting. 1 pointed out many interesting issues and mentioned a large number of tropical infections that can cause infective stroke. According to this report, malaria, tuberculosis, cystic...

The purpose of this paper is to study the tropical algebra – the algebra over the tropical semi-ring. We start by introducing a third approach to arithmetic over the max-plus semi-ring which generalizes the two other concepts in use. Regarding this new arithmetic, matters of tropical matrices are discussed and the properties of these matrices are studied. These are the preceding phases toward t...

The extratropical annular modes are coupled with a distinct pattern of climate anomalies that spans the circulation of the tropical troposphere. The signature of the annular modes in the tropical troposphere exhibits a high degree of equatorial symmetry. It is associated with upper-tropospheric zonal wind anomalies centered about the equator, midtropospheric temperature anomalies located ;208N ...

[1] Theory suggests tropical cyclone maximum potential intensity increases with increasing ocean temperature. However, most tropical cyclones fail to achieve this maximum intensity. Instead, empirical studies suggest that tropical cyclone intensities are uniformly distributed between this maximum potential intensity and an intensity that marks the transition between tropical storm and hurricane...

A great Empire Health Congress is about to be held at Wembley where, among many other remarkable things, there is a series of exhibits relating to tropical diseases of such importance that the King directed attention to them in the speech in which he opened the Exhibition. The British Empire has been the pioneer in sanitary enterprise, and it must be at once its duty and its pride to preserve a...