4873 to 4884 of 13722 results
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Further evidence for the ionospheric contribution to convection within the plasmasphere
Read more of: Further evidence for the ionospheric contribution to convection within the plasmasphereVLF goniometers have been used to study the direction of plasma convection in the evening plasmasphere. The results suggest that sometimes even for L values greater than 4 the electric […]
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Reproductive endocrinology of the Black-browed albatross Diomedea melanophris and the Grey-headed albatross D. chrysostoma
Read more of: Reproductive endocrinology of the Black-browed albatross Diomedea melanophris and the Grey-headed albatross D. chrysostomaGonadal size and the circulating concentrations of two pituitary hormones (luteinizing hormone and prolactin) and three gonadal steroids (testosterone, progesterone and oestradiol‐17β) were measured in two closely related Diomedea albatrosses […]
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Reproductive endocrinology of the Wandering Albatross Diomedea exulans in relation to biennial breeding and deferred sexual maturity
Read more of: Reproductive endocrinology of the Wandering Albatross Diomedea exulans in relation to biennial breeding and deferred sexual maturityThe reproductive endocrinology of the Wandering Albatross Diomedea exulans was studied at South Georgia to investigate the potential endocrine correlates of biennial breeding and of the acquisition of sexual maturity. […]
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Corticosterone secretion through long incubation shifts in Diomedea albatrosses
Read more of: Corticosterone secretion through long incubation shifts in Diomedea albatrossesBlood samples were collected from free-living incubating Diomedea albatross during single incubation shifts, both daily (wandering albatross D. exulans and every 2 days (grey-headed albatross D. chrysostoma and black-browed albatross […]
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The effects of temperature and moisture on dark respiration in the foliose lichen Umbilicaria antarctica
Read more of: The effects of temperature and moisture on dark respiration in the foliose lichen Umbilicaria antarcticaThe dark respiration of field‐fresh thalli of Umbilicaria antarctica Frey et Lamb is reported for temperatures from −5.5 to 19°C, and water contents from saturation to dryness. Detailed analysis of […]
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A method for the extraction and analysis of solutes from rock samples with some comments on the implications for weathering studies: an example from Signy Island, Antarctica
Read more of: A method for the extraction and analysis of solutes from rock samples with some comments on the implications for weathering studies: an example from Signy Island, Antarctica