Abstract: This paper addresses the maintenance of a halo orbit around the L1 point of the Sun-Earth system in a circular restricted three-body problem. To this effect, a trajectory tracking problem is formulated and solved by designing ...

Abstract: This paper addresses the time-critical rendezvous problem for a pursuing autonomous unmanned vehicle, e.g., an unmanned aerial vehicle (UAV), guided using the concept of true proportional-navigation guidance, which is a ...

Abstract: Nano zero valent iron (nZVI) composites were developed with iron loading ratios of 10% and 20% (w/w) using base materials, pumice, and zeolite. The four composites (PnZVI 10, PnZVI 20, ZnZVI 10, and ZnZVI 20) developed ...

Abstract: Nanoscale zerovalent iron (nZVI) was synthesized and employed for treating chromium(VI) containing aqueous solution through adsorption using a series of microcosm experiments. The experiments were then performed to study ...

Abstract: Nickel-based superalloys have been extensively used in the aerospace industry due to their excellent mechanical properties at elevated temperatures. The mechanical properties of the Inconel-718 majorly depend on its ...

Abstract: A pumice–maghemite (P-maghemite) composite was developed using the chemical coprecipitation method with a 20% iron loading ratio by weight. The characterization of the composite using SEM and XRD indicated the effective ...

Abstract: Soil–water cocontamination with heavy metals and nonaqueous phase liquids (NAPLs) raises widespread concerns. Coexisting NAPL pollutants like toluene can antagonize the chemical processes employed for removing target heavy ...