4261 to 4272 of 14119 results
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British biological research in the Antarctic
Read more of: British biological research in the AntarcticA tradition of biological research in the Antarctic was established by Cook 200 years ago. This tradition has been built on by other British expeditions, notably the ‘Discovery’ Investigations. The […]
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Cold hardiness of some Alpine Collembola
Read more of: Cold hardiness of some Alpine Collembola1 Individual supercooling points ranged from ‐2 to ‐44°C for six species of springtails, five species from the Swiss Alps and one from lowland Britain. Individuals of Isotomurus alticola (Carl) […]
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Survival strategies in polar terrestrial arthropods
Read more of: Survival strategies in polar terrestrial arthropodsThree components of the survival strategy of a terrestrial Antarctic mite, Alaskozetes antarcticus (Acari: Cryptostigmata) are considered: overwintering survival, energetics and life history. Supercooling is an important feature of its […]
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Discordant RbSr and PbPb whole rock isochron ages for the Archaean basement of Sierra Leone
Read more of: Discordant RbSr and PbPb whole rock isochron ages for the Archaean basement of Sierra LeoneField mapping and structural studies in northern Sierra Leone by an I.G.S. team have established a stratigraphic sequence in this part of the Archaean of the West African Craton. An […]
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The measurement of daily energy expenditure—an evaluation of some techniques
Read more of: The measurement of daily energy expenditure—an evaluation of some techniquesAn energy balance survey was conducted on an Antarctic base on 12 individuals for periods varying between 6 and 12 months. Energy expenditure was estimated using two activity/dairy card techniques […]
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The measurement of food and energy intake in man—an evaluation of some techniques
Read more of: The measurement of food and energy intake in man—an evaluation of some techniquesA dietary survey was carried out on an Antarctic base over a period of 6 to 12 months on twelve individuals. Three methods of determining individual food and energy intake […]
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A longitudinal study of body weight and body fat changes in Antarctica
Read more of: A longitudinal study of body weight and body fat changes in AntarcticaBody weight and body fat changes (calculated from skinfold thickness) that occurred in a male population spending a year on an Antarctic base are described. There was a marked individual […]
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Genistein and estradiol have common and specific impacts on the sea bass (Dicentrarchus labrax) skin-scale barrier
Read more of: Genistein and estradiol have common and specific impacts on the sea bass (Dicentrarchus labrax) skin-scale barrierTeleost fish scales play important roles in animal protection and homeostasis. They can be targeted by endogenous estrogens and by environmental estrogenic endocrine disruptors. The phytoestrogen genistein is ubiquitous in […]