In order to solve the problem of forced landing in emergency for Unmanned Aerial Vehicles (UAVs), a multiinformation based algorithm for selecting forced landing area by step is proposed. In order to extract the slowly varying edges and weak edges in an aerial image, this algorithm adopted improved edge detection method to detect landing area without obstacles. To select the detected safe areas...

To reveal the full potential of human pluripotent stem cells, new methods for rapid, site-specific genomic engineering are needed. Here, we describe a system for precise genetic modification of human embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs). We identified a novel human locus, H11, located in a safe, intergenic, transcriptionally active region of chromosome 22, as t...

1. The behaviours of monocular and binocular flies are compared with respect to the landing reaction. It is found that landing reaction is elicited through different mechanisms by stimulating the zones of single or of double vision: M onocular stim ulation in the field of single vision evokes reactions with both ipsilateral and contralateral legs; monocular stimulation in the field of double vi...

BACKGROUND Jump landing is a complex movement in sports. While competing and practicing, athletes frequently perform multi-planar jump landing. Anticipatory muscle activity could influence the amount of knee flexion and prepare the knee for dynamic weight bearing such as landing tasks. OBJECTIVES The aim of the present study was to examine knee muscle function and knee flexion excursion as at...

While average temperatures on Mars may be too low to support terrestrial life-forms or aqueous liquids, diurnal peak temperatures over most of the planet can be high enough to provide for both, down to a few centimeters beneath the surface for some fraction of the time. A thermal model was applied to the Viking 1, Viking 2, Pathfinder, Spirit, and Opportunity landing sites to demonstrate the dy...

This paper handles a trajectory optimization of fixed wing aircraft perch landing assisted by thruster. The paper develops aircraft model and deals with six-degree-of-freedom motion for further understanding of dynamic phenomena of proposed landing method. The landing maneuver is described as an optimal control problem minimizing the fuel consumption with specified terminal landing conditions. ...

The study focused on the bacteriological profile of four different smoke-dried fishes Clarias gariepinus (CG), Oreochromis niloticus (ON), Malapterurus electricus (ME), and Citharinus citharus (CC) sold at three landing market sites (Otuocha, Ose, Ogbakuba) in Anambra State, Nigeria. Bacteria isolates from fish samples were examined identified using microscopic, morphological, biochemical chara...

Marine coastal fishery often yields a considerable portion of the non-target species and by-catch as trash fish in total catch. Generally, it consists edible inedible species, which are unacceptable for human consumption usually discarded waste. However, has significant potential to use animal feed. The current study was intended determine proximate composition abundant selected landing sites J...