We present a re-analysis of the optical spectroscopic data on SS 433 from the last quarter-century and demonstrate that these data alone contain systematic and identifiable deviations from the traditional kinematic model for the jets: variations in speed, which agree with our analysis of recent radio data; in precessioncone angle and in phase. We present a simple technique for separating out th...

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Fuel spray characteristics influence combustion, which in turn has a direct impact on engine performance and emissions. Recently, there been an increasing interest novel castor oil biodiesel. However, few investigations have performed that combine both numerical experimental biodiesel analyses. Hence, this paper, we aim to explore the behavior of jatropha by employing methods under non-evaporat...

A constant angle surface in Minkowski space is a spacelike surface whose unit normal vector field makes a constant hyperbolic angle with a fixed timelike vector. In this work we study and classify these surfaces. In particular, we show that they are flat. Next we prove that a tangent developable surface (resp. cylinder, cone) is a constant angle surface if and only if the generating curve is a ...

Depending on the spraying conditions and fluid properties, a variety of electrospray regimes exists. Here we explore the changes in ion production that accompany the transitions among the three axial spraying modes, the burst mode, the pulsating Taylor cone mode, and the cone-jet mode. Spray current oscillation and phase Doppler anemometry measurements, fast imaging of the electrified meniscus,...