Documents found
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112432.More information
AbstractA summary of projects concerning the use of medication for non-medical purposes by adolescents and young adults indicates that practices involving sports doping, improvement of intellectual and sexual performance as well as mood control, and corporal modeling are on the increase. Recourse to these medications is often associated with the consumption of other substances (alcohol and drugs) and appears to indicate a new phase in the development of modern drug addiction. This group of studies nevertheless remains limited due to the predominance of the epidemiological approaches. These contribute to identifying the profile of the users, usually boys. The list of substances employed and the frequency of their use reveal the principal factors and determinants of the use. Nevertheless, few studies adopt explicit theoretical approaches. New paths for research are proposed which would enable a more precise evaluation of the conduct and representations associated with practices of abuse, doping and drug diversion and their significance.
Keywords: médicaments, détournement, dopage, mésusage, abus, dopage, adolescents, jeunes adultes, prescription drugs, drug diversion, doping, misuse, non medical use, drug abuse, doping, adolescents, young adults, medicamentos, utilización indebida, dopaje, uso incorrecto, abuso, adolescentes, adultos jóvenes
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112434.More information
Specially detailed studies of permafrost have developed at Schefferville because of the availability of long term data and the economic stimulus of the effect of permafrost on the iron mines. Knowledge of the three dimensional distribution of permafrost has been greatly expanded and energy budget studies have given confidence to many aspects of interpretation. Although the mean annual temperatures are -5 to -6.5°, large areas remain free of permafrost due to the winter insulation provided by deep snow which accumulates where snow drifting is subdued (e.g. in woodland). There are large year to year variations of frozen ground temperature in the upper 25 m (due to variations of snow conditions) and active layer depth (related to variations of summer weather conditions). Suprapermafrost groundwater movement is often concentrated along specific channels and transported heat causes very deep active layers (up to 12 m) or even maintains unfrozen zones (up to 30 m). On simple sites the active layer is primarily related to % vegetation cover, with mean depth ranging from 2.3 m under 100% vegetation to 3.6 m under bare ground. Considerable effort has been devoted to quantifying snow data for permafrost prediction and good results have been obtained from quanti-titavely relating ground temperatures to snow and a simulated groundwater measure. The permafrost is generally in balance with the present climate and new permafrost has developed in mine waste dumps.
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112435.
Evaluation of Amino Acid Composition as a Geochronometer in Buried Soils on Mount Kenya, East Africa
More informationABSTRACTA sequence of surface and buried paleosols from the slopes of Mount Kenya, East Africa, has been identified and dated by radiocarbon and amino acid dating techniques in order to elucidate the Quaternary history of the area. Buried paleosols vary in radiocarbon age from 900 to > 40,000 yrs BP. They have developed in glacial and periglacial deposits of variable texture, consisting of a high percentage of clasts of phonolite, basalt and syenite. All but two paleosols are located in the Afroalpine zone (above 3200 m). D/L ratios of amino acids in Ab horizons were determined in order to establish their reliability for relative age dating. Alanine, aspartic acid, glutamic acid, leucine, valine, and phenylalanine were routinely analyzed. Aspartic acid, as in other cases, proved reliable yielding remarkably consistent results, with higher ratios corresponding to increasing age. Other acids analyzed showed distinct trends, although not as convincing as aspartic acid. In most cases, the aspartic acid ratio/ age relationships were supported by radiocarbon dates. D/L ratios of aspartic acid varied from approximately 0.07 for modern samples, to approximately 0.45 in samples > 40,000 years old.
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112436.More information
The "intuitive" categories of time and space defined by Kant are to all extents and purposes indelibly inscribed in human projects. This is particularly the case with works of art and other objectified representations of collective life. In the purview of literary studies, Mikhail Bakhtin has drawn inspiration from Einstein and the physical sciences to name this spatio-temporal configuration "chronotope". This study is interested in the "images of the city" in contemporary Quebec poetry, and particularly in their chronotopical orientations. This first part discusses the changing conceptions of time and space in Western culture, as well as the Bakhtinian conception of the chronotope. In the second part, the author provides a detailed analysis of Clément Marchand's and Claude Beausoleil's urban poetry, emphasizing the chronotopical dimension of their works, as these are linked to an individual and collective existence.
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112437.More information
This paper sketches the evolution of thinking about historiography from its focus on method and the history of historical thought some fifty years ago to Mark Salber Phillips's highly original study, On Historical Distance, with its focus on “literariness” and its reconception of the meaning of “distance.” The paper notes the approaches of historian J.H. Hexter, literary critic Ralph Cohen, and philosopher Hans-Georg Gadamer as benchmarks along the way.
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112439.
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112440.More information
In this work, Jaffary responds to various commentaries about Reproduction and Its Discontents produced by her co-panelists and delineates the genesis and intention of her book by discussing some of the first sources and questions that led her into her research, and some of the key conclusions she draws from the evidence she uncovered.