3745 to 3756 of 14011 results
The proportion of the working population employed on some form of shift system has increased substantially over the past two or three decades. Expert opinion as to the optimal form […]
After five months of total isolation a wintering party of seventeen British Antarctic Survey (BAS) personnel was inoculated under double blind concitions with placebo, or rhinovirus type 2 which had […]
The British Arctic Expedition sailed from Portsmouth on 29 May 1875. It left amid considerable public enthusiasm and with a telegram from the Queen. A contemporary journal had this to […]
The past ten years have seen a greatly increased interest in the Antarctic krill Euphausia superba Dana (Fig 1). In particular there have been several Russian expeditions whose main aim […]
Median height distributions of electron concentration may be determined from ionograms by means of the composite ionogram technique of Wright, or by inserting tabulated parameters in the idealized model of […]
Most animal species reproduce sexually and fully parthenogenetic lineages are usually short lived in evolution. Still, parthenogenesis may be advantageous as it avoids the cost of sex and permits colonisation […]
Results of analysis of the diurnal variations of hmF2 for Argentine Islands (65°15’S, 64°16’W) and Halley Bay (75°30’S, 26°40’W) are presented. It is shown that, for summer months, the diurnal […]
A comparison has been mager between ice velocities that were measured by the radio-echo technique and by a survey method on the Devon Island ice cap, Arctic Canada (lat. 75° […]