5953 to 5964 of 14084 results
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The effects of temperature and moisture on CO2 uptake and total resistance to water loss in the antarctic foliose lichen Umbilicaria antarctica
Read more of: The effects of temperature and moisture on CO2 uptake and total resistance to water loss in the antarctic foliose lichen Umbilicaria antarcticaMaximum net photosynthesis of field‐fresh thalli, illuminated at 200 μmol photons m−2 s−1 (PAR), was attained at 13 °C and 1.10 g g−1 water content. Small but significant rates of […]
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Antarctic rock weathering simulations: simulator design, application and use
Read more of: Antarctic rock weathering simulations: simulator design, application and useThe design of a computer-controlled climatic simulation cabinet used for mechanical weathering studies on Antarctic rocks is described. It is argued that if the results of simulations are to be […]
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Effect of phototherapy on serum 25-hydroxyvitamin D in the Antarctic
Read more of: Effect of phototherapy on serum 25-hydroxyvitamin D in the AntarcticThe hypothesis that sunlight may induce the enzymes involved in the vitamin D pathway has been tested by comparing the ability to synthesize vitamin D3 and its 25 hydroxy metabolite […]
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Flow of Rutford Ice Stream and comparison with Carlson Inlet, Antarctica
Read more of: Flow of Rutford Ice Stream and comparison with Carlson Inlet, AntarcticaResults from movement surveys on Rutford Ice Stream are presented with complementary surface-elevation and ice-thickness measurements. Surface velocities of 300 m a−1 occur at least 130 km up-stream of the […]
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Measurements of total ozone using Dobson spectrometers: Some comments on their history
Read more of: Measurements of total ozone using Dobson spectrometers: Some comments on their historyThe Dobson ozone spectrometer has been used for studies of the ozone layer for about 60 years. It remains indispensable for assessing the accuracy of satellite-borne instruments. The steps which […]