37 research outputs found

    Evaluation of the impact of orally administered carbohydrates on postprandial blood glucose levels in different pre-clinical models

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    ABSTRACT We developed a pre-clinical model in which to evaluate the impact of orally administered carbohydrates on postprandial blood glucose levels. For this purpose, we compared the effects of different carbohydrates with well-established glycemic indexes. We orally administered (gavage) increasing amounts (0.2, 0.4, 0.6, 0.8, and 1.0 g/kg) of sucrose and lactose to rats which had been fasted for 6 h or 15 h, respectively. In part of the experiments we administered frutose (gavagem). Three different models were compared for measuring postprandial blood glucose levels: a) evaluation of interstitial glucose concentrations by using a real time continuous glucose monitoring system; b) evaluation of glucose levels in blood obtained from the rat tail; c) evaluation of serum glucose levels in blood collected after decapitation. Our results showed that blood obtained from the tails of 15-h fasted rats was the best model in which to evaluate the effect of carbohydrates on postprandial blood glucose levels

    The Physics of the B Factories

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    Strukturuntersuchungen an amorphen und kristallinen (Zr,Hf)-Fe-Legierungen

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    SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

    Influence of inert gas pressure on deposition rate during pulsed laser deposition

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    SOLID-STATE REACTION OF Zr-Fe MULTILAYERED FILMS INVESTIGATED BY MĂ–SSBAUER SPECTROSCOPY

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    Multilayered Zr - Fe films of average composition Zr50Fe50 were prepared by sputtering. The samples were solid - state reacted and subsequently investigated by Conversion Electron Mössbauer Spectroscopy (CEMS). Already in the as - deposited multilayer an amorphous interlayer is detected. In the early stage of the interdiffusion reaction a Mössbauer spectrum is observed which is typical for an amorphous Zr - rich phase of concentration near Zr2Fe. After further annealing a completely amorphous film can be reached. Differences between solid - state reacted, mechanically alloyed, melt - quenched and especially co - sputtered Zr - Fe samples can be observed in the middle of the concentration range. However, these differences can be reduced by a heat treatment, which changes the atomic arrangement around the Fe atoms and leads to the appearance of direct Fe - Fe contacts
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