Heat transfer and pressure distributions at M equals 8 on 0.029 scale models of the Viking entry vehicle

An investigation in the Langley Research Center Mach-8 Variable Density Hypersonic Tunnel was made of the pressure distributions and heat transfer rate distributions on two 0.029 scale Viking Entry Vehicle models. Comparable ranges of test Reynolds number were exercised for the two tests between run conditions around 4 million and conditions of about 1.6 million. At angles of attack less than 20 degrees the pressure ratio distribution referenced to stagnation pressure appeared invariant with Reynolds number. Increasing angle of attack results in a flatter distribution of both the windward and leeward pressure distributions; in addition, the stagnation point shifted into the windward plane. A subsequent rise in the heating rate profile on the leeward side with further increase in angle of attack is attributed to boundary layer natural transition to turbulent flow. Schlieren photographs were taken for flow field visualization and to correct model angle of attack

Variability factors in trace elements nutritional status by plasmatic indicators in camel (Camelus dromedarius) in Morocco. II. Effect of mineral supplement

Quatre lots de 5 dromadaires ont reéu respectivement une injection unique de cuivre et de zinc (lot lM), une complémentation orale pendant un mois de sulfate de cuivre (lot Cu), de sulfate de zinc (lot Zn) et aucune complémentation (lot T). L'essai a duré 111 jours et la période de complémentation est survenue entre 7e et le 37e jour. Dans le lot IM, la cuprémie et la zincémie ont significativement augmenté (maximum de 72 et de 73 µg/100 ml respectivement). Dans le lot Cu, la cuprémie a significativement augmenté ainsi que la zincémie dans le lot Zn, mais les valeurs observées ne dépassent pas les seuils admis comme limite de carence et chutent rapidement après l'arrêt de la complémentation. L'interaction cuivre-zinc se traduit par une diminution non significative de la zincémie dans le lot Cu et significative de la cuprémie dans le lot Z

Reconstructing Colonization Dynamics of the Human Parasite Schistosoma mansoni following Anthropogenic Environmental Changes in Northwest Senegal

© 2015 Van den Broeck et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The attached file is the published version of the article