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The transplacental flux of glucose together with the consumption by the tissue was studied in human term placenta using the dual in vitro perfusion of an isolated cotyledon. The effect of different transplacental glucose gradients going either from the maternal to the foetal side or in the opposite direction was tested. A linear correlation between uptake from the donor circuit as well as transplacental...
Thin, hydrogen-free 3C-SiC films were grown on (001) silicon substrates at rather low temperatures by C 60 -carbonization under simultaneous silicon co-deposition at different rates. Fullerene molecules and silicon were evaporated from Knudsen cells. The dependence of the structure and phase composition on Si rate and working pressure has been examined. Optimum growth conditions for the...
C 60 molecule deposition onto commercial SOS (silicon on sapphire) wafers with (001) silicon on r-plane (11̄02) sapphire results in the formation of silicon carbide (SiC), if substrate temperatures of 810 °C are exceeded. Elastic recoil spectroscopy indicates the formation of a stoichiometric SiC layer. X-ray pole figure measurements show that the main part of the resulting cubic 3C-SiC grows...
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