Papers by Keyword: AMS

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Authors: Wei Jun Pan, Dan Wu, Na Lu
Abstract: The new controllers of plateau airports are at the higher risk of acute mountain sickness (AMS) caused by the reduced pressure and hypoxia. The rapid growth of air traffic flow of plateau airports in recent years boosts the increasing number of new air traffic controllers of plateau region. So it has great significance for the improvement of air traffic control (ATC) of plateau airports how to prevent AMS in an effective way. To enhance the ATC efficiency, it is also very important to improve the prevention work for AMS. Firstly, the current operation state of plateau airports is discussed in brief. And the analysis on AMS is conducted to present what AMS is and ascertain the effects of AMS on the new controllers and their work. And the new strategy, an effective way to improve the plateau environment acclimatization of the new members, is proposed in this paper.
Authors: Timothy N. Debacker, Philippe Robion, Manuel Sintubin
Abstract: The anisotropy of magnetic susceptibility (AMS) is often interpreted in terms of strain. However, since AMS is controlled by all magnetic (s.l.) carriers present, an AMS interpretation is not straightforward, especially in the presence of composite magnetic fabrics. Considering the large number of factors that may influence rock mineralogy (e.g. sediment source area, metamorphism), it becomes clear that one cannot interpret AMS in terms of strain without applying additional techniques that allow determining the nature and preferred orientation of all magnetic (s.l.) carriers likely influencing the measured AMS. This is discussed using samples from the Brabant Massif (Belgium) and the Moesian Platform (E-Romania).
Authors: S.H. Sie, T.R. Niklaus, G.F. Suter
Authors: Tomasz Trzepieciński, Andrzej Trytek, Hirpa G. Lemu
Abstract: The research reported in this article has considered the frictional characteristics of three kinds of AMS nickel-chromium alloys that are commonly used in aerospace industry. These are alloys with additions of titanium and aluminum AMS5542, nickel-chromium alloy AMS5596, and non-magnetic, corrosion and oxidation resistant, nickel-chromium alloy AMS5599. To determine the friction coefficient two tribological tests, a strip drawing test and a pin-on-disc tribometer have been conducted. Three different friction conditions were considered, dry friction, lubrication conditions using two grades of oils used in sheet metal forming of AMS alloys. The experimental results have ascertained several relationships showing the effect of sheet metal surface roughness, lubricant conditions and sheet orientation on the value of friction coefficient in sheet metal forming processes. Different levels of normal pressure were also used in friction tests. The results further showed that the surface topography and sample orientation in the rolling direction of the sheet are significant factors that influence the friction coefficient. It has been observed that the tested AMS alloys, selected from aerospace industry applications, exhibit anisotropic resistance to the friction corresponding to the measured orientation in relation to the rolling direction of the sheet.
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