Abstract The knowledge of acoustic wave propagation in a borehole tillman 750m embedded in gas hydrate-bearing sediments is of great significance for the exploitation of gas hydrate.A gas hydrate-bearing sediment is a typical three-phase porous medium containing two solids and one fluid.However, until now, the borehole acoustic wavefield and its co
In postwar Germany, inner-German borders were much disputed.While Germans widely deplored the division of their country and capital city, strong political forces in the East and the West struggled for their spheres of influence.Hence, moving from the East to the West or from the West to the East is the subject of many narratives.Typically, a confli
Abstract Background Typical symptoms of an acute simply southern cat shirt human immunodeficiency virus (HIV) infections like fever and rash are not specific and can be caused by a multitude of other pathogens, such as Zika or rickettsiosis.Up to 30% of primary HIV infection do not present with the typical flu-like symptoms and thus represent a dia
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Line detection is an important problem in computer vision, graphics and autonomous robot navigation.Lines detected using a laser range sensor (LRS) mounted on a robot can be used as features to build a map of the environment, and later to simply southern cat shirt localize the robot in the map, in a process known as Simultaneous Localization and Ma