941 resultados para Brill, Paulus, 1554-1625.


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Banco del conocimiento

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Formulations of a general bactericidal agent, chlorhexidine, mixed with a phospholipid at different concentrations are investigated using ^H NMR spectroscopy on a chain-deuterated lipid analog. Lipid-chlorhexidine formulation is known to release the drug into an aqueous medium slowly, maintaining a comparable concentration of the drug for up to four times longer than a direct aqueous solution. The NMR data does not support the proposed liposomal entrapment of chlorhexidine in lipid compartments. Complex thermal history of the lipid-chlorhexidine preparations is investigated in detail. In preparation for a counterpart measurement, using ^H NMR of deuterated chlorhexidine mixed with protonated lipid, the synthesis of a deuterated analog of chlorhexidine is performed.

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This investigation comprises three parts: (1) the source, mechanism of transport, and distribution of pollen, spores and other palynomorphs in Georgian Bay bottom sediments and a comparison of these data with the contemporary vegetation, (2) the relative significance of fluvial transportation of pollen and spores, and (3) the late- and postglacial history of vegetational and climatic changes in the Georgicin Bay region. Modem pollen and spore assemblages in Georgian Bay do reflect the surrovinding vegetation when preservation and pollen production by the different species are considered and accounted for. Relative pollen percentage and concentration isopoll patterns indicate that rivers contribute large quantities of pollen and spores to Georgian Bay. This is further substantiated by large amounts of pollen and spores which were caught in traps in the Moon, Muskoka, and Nottawasaga Rivers which flow into Georgian Bay. The majority of pollen and spores caught in these traps were washed into the rivers by surface water runoff and so reflect the vegetation of the watershed in a regional sense. In a 12.9 metre long sediment core from northeastern Georgian Bay the relative percentage and absolute pollen concentrations allow correlation of Georgian Bay Lake phases with climatic and forest history. Four distinct pollen zones are distinguished: zone GB IV which is the oldest, reflects the succession from open spruce woodland to boreal forest; zone GB III represents a period of pine-mixed hardwoods forests from about 10,000 to 7,500 years ago. A pine-maplehemlock association dominated in zone GB II, although during the culmination of postglacial warming about 4,000 to 5,000 years ago the Georgian Bay forests had a more deciduous character. Zone GB I clearly shows European man's disturbance of the forest by logging activities.

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This letter authorizes William Hamilton of Portmollart to repair to Edinburgh notwithstanding the acts discharging the Hamiltons from being within six miles of the King’s person. James VI and James I (June 19, 1566 – March 27, 1625) was King of Scots as James VI from July 24th, 1567 and King of England and Ireland as James I from the union of the English and Scottish crowns on March 24, 1603 after the passing of Elizabeth I.

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Tesis (Maestría en Ciencias con Especialidad en Inmunología) UANL

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Tesis (Maestría en Ciencias, Especialidad en Ecología Acuática y Pesca) UANL

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En rencontrant aujourd’hui Danielle Tardif, responsable de la bibliothèque de la faculté de médecine de Montréal, la rédaction de Pédagogie Médicale ouvre sa rubrique à des acteurs de formation autre que les médecins-enseignants au sens traditionnel du terme. Conscients du rôle d’autres professionnels dans la formation de nos futurs médecins, nous avons voulu mieux les faire connaître et engager un dialogue avec eux. Danielle Tardif a suivi un cursus universitaire de biologie et de bibliothéconomie. Elle a fait un détour de 10 ans en recherche médicale avant de travailler comme bibliothécaire. « Cette expérience m’est aujourd’hui très précieuse » nous précise- t-elle. Elle est chef du service de référence et développement des collections à la Bibliothèque de la santé depuis 10 ans et considère la formation documentaire des usagers comme une priorité de son équipe.