The problem regarding the optimal placement and sizing of different FACTS (flexible alternating current transmission systems) in electrical distribution networks is addressed this research by applying a master–slave optimization approach. analyzed correspond to unified power flow controller (UPFC), thyristor-controlled shunt compensator (TCSC, also known as thyristor switched capacitor, or TSC)...

We report on an unusually bright observation of PSR J2051$-$0827 recorded during a regular monitoring campaign black-widow pulsar systems with the Effelsberg 100-m telescope. Through fortunate coincidence, particularly scintillation maximum is simultaneous eclipse by companion, enabling precise measurements variations in flux density, dispersion measure (DM), and scattering strength throughout ...

Previous studies in the wolf spider Lycosa tarantula (Linnaeus 1758) have shown that homing is carried out by path integration and that, in the absence of information relative to the sun's position or any pattern of polarized light, L. tarantula obtains information as to the angle it must turn to home through the anterior lateral eyes (ALEs). In the present study, spiders were trained to walk o...

An unattended trap was designed to iample andretainspiders dispersing from agriculturalgrassland and crops. Traps comprised a removable bottle-trap fixed to the top of a vertical metal rod or"climbing-stick" that spiders climbed during normal pns-ballooning behavior. Bottle-traps caught overeight times more spiders than sticks treated with insect trapping adheslvie. Draping ...

In the past few years a number of reviews, books and journal articles featuring silks have been published. Silks are produced by over 41,000 species of spiders (class Arachnida) and by many insects (terrestrial and aquatic), particularly in the order Lepidoptera (Foelix, 1996); they are defined as externally spun fibrous material generated from protein secretions. The cocoon silk from the domes...

Abstract Adult female spiders lay batches of eggs in silken egg sacs, and after hatching, the spiderlings live for transient periods their mother's web before dispersing. Sibling cannibalism is frequently observed among many species under conditions food deprivation. Here, we conducted assays small Petri dishes with different densities newly hatched (second instar) false widow spider, Steatoda ...