Wilfried Probst

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Playing And Learning Without Borders: A Real-time Online Play Environment Sauvé, L., Villardier. L. , Probst, W. , Boyd, G., Kaufman, D. 4 et Sánchez Arias, V.G. Power, M. 1 Louisesauve@vif.ca; lvillard@teluq.uquebec.qc.ca; probst.wilfried@uqam.ca; boydg@vax2.concordia.ca; dkaufman@sfu.ca; victor@lania.mx; mpower@teluq.uquebec.ca Télé-université / SAVIE,(More)
Vegetation zonation around three fresh water sources along the salt lake Maharlu, S. Iran, is described. Spatial distribution of vegetation types is a function of the decrease in salinity within the delta-like area between lake border and sources.Juncus maritimus dominates on the saline soils of the lake shore. On places under influence of fresh waterJuncus(More)
Internet and multimedia technologies have brought major changes to the field of e-learning and telelearning. It is now possible to hold virtual workshops in a synchronous computer based environment, to share documents and to participate live via video in a scientific experiment, or even manipulate a scientific device collaboratively from a distant site(More)
The synthesis of 9-nitronoracronycine (12) from 1,3-dihydroxy-10-methyl-7-nitroacridone (4) and 2-chlor-2-methyl-3-butyne is reported. Screening tests with the transplantation tumor leukemia P 388 proved 4 and 1-methoxy-10-methyl-7-nitroacridone (14) to be inactive. 12 and 3-methoxy-10-methyl-7-nitroacridone (15) showed cytotoxicity in higher doses.(More)
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