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Ronald Pordzik and Peer Woizeschke
The formation of defects such as pores during deep-penetration laser welding processes is governed by the melt pool dynamics and the stability of the vapor capillary, also referred to as the keyhole. In order to gain an insight into the dynamics of the k...
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Bonguk Koo and Yong-Duck Kang
The results of flow visualization and hot-film measurement in a water channel are presented in this paper, in which the effectiveness of controlling synthetic hairpin vortices in the laminar boundary layer is examined to reduce skin friction. In this stu...
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Kurt Polzin, Adam Martin, Justin Little, Curtis Promislow, Benjamin Jorns and Joshua Woods
An inductive pulsed plasma thruster (IPPT) operates by pulsing high current through an inductor, typically a coil of some type, producing an electromagnetic field that drives current in a plasma, accelerating it to high speed. The IPPT is electrodeless, ...
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Álvaro Somolinos, Rafael Florencio, Iván González and Felipe Cátedra
Multi-beams antennas are currently being used for direct broadcast satellite, personal communication satellite, military communication satellite, and high-speed internet applications. In this work, a circularly polarized (CP) multi-spot beam satellite pa...
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Cécile Chèze, Romaric Nègre
Pág. 5307 - 5324
Wider economic impacts are indirect effects of transport infrastructure on the whole economy. That is a major change in rationale from the cost-benefit analysis to a greater range of impacts on labour and intermediary goods and services markets. Wider ef...
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