Introduction Conclusions References

By using a half soap bubble heated from below, we obtain large isolated single vortices whose properties as well as their intensity are measured under different conditions. By studying the effects of rotation of the bubble on the vortex properties, we found that rotation favors vortices near the pole. Rotation also inhibits long life time vortices. The velocity and vorticity profiles of the vor...

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This supplement to the American Journal of Tropical Medicine and Hygiene, entitled “The pandemic of falsified medicines: laboratory and field innovations and policy perspectives,” showcases 17 articles on detection technologies and methods, field surveillance data, multisectorial perspectives, and policy interventions and recommendations needed to create a coordinated and effective response to ...

By R. W. Felkin, M.D. Pp. 79. Edinburgh: William F. Clay. 1895. Dr. Felkin divides the vast area of Africa intoeight divisions, and adopts a system of symbols which by their shape* colour and number indicate the presence, the prevalence or mtense prevalence of the diseases common to each region. J*16 reader has therefore only to master the significance 01 the symbols, and then by looking at the...

Studying the spatial pattern and interspecific associations of plant species may provide valuable insights into processes and mechanisms that maintain species coexistence. Point pattern analysis was used to analyze the spatial distribution patterns of twenty dominant tree species, their interspecific spatial associations and changes across life stages in a 20-ha permanent plot of seasonal tropi...

Thin tropical cirrus layers sometimes extend hundreds of kilometers horizontally and often persist for time periods of several hours to more than a day before dissipating. Due to their ubiquity and location in the very cold tropical upper troposphere and above the very warm tropical ocean, tropical cirrus clouds play a major role in the earth’s radiation budget (Liou 1986). Despite their impact...