Radiant rubbish

Radiant distribution of micrometeors

Precise knowledge of the angle between the meteor vector velocity and the radar beam axis is one of the largest source of errors in the Arecibo Observatory (AO) microme-teor observations. In this paper we study ∼250 high signal-to-noise ratio (SNR) meteor head-echoes obtained using the dual-beam 430 MHz AO Radar in Puerto Rico, in or-5 der to reveal the distribution of this angle. All of these ...

Radiant Energy and the Eye

Ophthalmology Series. (Pp 321, Figs 167, Tables 41. £25.00). London: Bailliere Tindall, 1980. THIS well presented and well organised book discusses the known and potential effects and hazards of radiant energy on the eye. It admirably correlates current scientific knowledge concerning radiant erergy with its biological effects on ocular structures and documents the various mechanisms whereby v;...

Satellite DNA in Plants: More than Just Rubbish.

For decades, satellite DNAs have been the hidden part of genomes. Initially considered as junk DNA, there is currently an increasing appreciation of the functional significance of satellite DNA repeats and of their sequences. Satellite DNA families accumulate in the heterochromatin in different parts of the eukaryotic chromosomes, mainly in pericentromeric and subtelomeric regions, but they als...

Radiant hard red winter wheat

Thomas, J. B., Conner, R. L. and Graf, R. J. 2012. Radiant hard red winter wheat. Can. J. Plant Sci. 92: 169 175. Radiant hard red winter wheat (Triticum aestivum L.) is well adapted to the non-hazard region for stem rust (Puccinia graminis Pers.: Pers. f. sp. tritici Eriks. & E. Henn.) within the Canadian prairies. Based on evaluation relative to Norstar, CDC Osprey, AC Tempest and AC Bellatri...

Disposal of Night-Soil and Rubbish by Compost System