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121.
Résumé Des injections sous-cutanés d'une solution de méthyl-cellulose provoquent dans la rate une vraie hypertension artérielle maligne. Les animaux utilisés eurent fréquemment des dèmes et des ascites et toujours des lésions artérielles dans le cur, les reins et ailleurs.
This study was supported by grants H-2703 and H-4327 from the United States Public Health Service. 相似文献
This study was supported by grants H-2703 and H-4327 from the United States Public Health Service. 相似文献
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Robb Fenton F. Hall Martin L. W. Wells Michael P. Cohen Claire 《Systemic Practice and Action Research》1999,12(3):311-328
Systemic Practice and Action Research - 相似文献
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Wendy Hall 《清华大学学报》2010,(6)
<正>The World Wide Web (WWW) has revolutionized many aspects of society in the past two decades.Emerging applications of the World Wide Web have not only fostered industrial 相似文献
129.
Direct dating of ductile shear zones and calculation of uplift/exhumation rates can be done using various radiometric dating techniques. But radiometric dating of shallow crustal faulting, which occurs in the crust's brittle regime, has remained difficult because the low temperatures typical of shallow crusted faults prevent the complete syntectonic mineral recrystallization that occurs in deeper faults. Both old (detrital) and newly grown (authigenic) fine-grained phyllosilicates are thus preserved in shallow fault zones and therefore their radiometric ages reflect a mixture of both mineral populations. Also, the loss of 39Ar during neutron irradiation in dating of clay minerals can produce erroneously old ages. Here we present a method of characterizing the clay populations in fault gouge, using X-ray modelling, combined with sample encapsulation, and show how it can be used to date near-surface fault activity reliably. We examine fault gouge from the Lewis thrust of the southern Canadian Rockies, which we determine to be approximately 52 Myr old. This result requires the western North America stress regime to have changed from contraction to extension in only a few million years during the Eocene. We also estimate the uplift/exhumation age and sedimentary source of these rocks to be approximately 172 Myr. 相似文献
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Experiments with interactional expertise 总被引:1,自引:0,他引:1
Harry Collins Rob Evans Rodrigo Ribeiro Martin Hall 《Studies in history and philosophy of science》2006,37(4):656-674
‘Interactional expertise’ is developed through linguistic interaction without full scale practical immersion in a culture. Interactional expertise is the medium of communication in peer review in science, in review committees, and in interdisciplinary projects. It is also the medium of specialist journalists and of interpretative methods in the social sciences. We describe imitation game experiments designed to make concrete the idea of interactional expertise. The experiments show that the linguistic performance of those well socialized in the language of a specialist group is indistinguishable from those with full blown practical socialization but distinguishable from those who are not well socialized. The imitation game can also be used to indicate whether an individual can enter an esoteric domain and master the interactional expertise, a skill required by interpretative sociologists of science, anthropologists, ethnographers, and the like. 相似文献