By looping over a set of behaviors, reactive systems use repetition and feedback to deal with errors and environmental uncertainty. Their robust, fault-tolerant performance makes reactive systems desirable for executing plans. However, most planning systems cannot reason about the loops that characterize reactive systems. In this paper, we show how the structured application of abstraction and ...

abstract background: at present study, acid modified banana leaf ash was used as an adsorbent for the successful removal of reactive black 5 (rb5) dye from aqueous environments. materials and methods: the effect of various operating parameters such as ph of solution, dye concentration, contact time, adsorbent dosage, and the temperature was investigated. results: maximum adsorption capacity of ...

results seminal plasma tac level in normospermic men was significantly higher than asthenoteratospermic men (p < 0.001) and oligasthenoteratospermic men (p < 0.001) and had posetive correlation with sperm count, motility and morphology. in contrast mda levels in normospermic men were significantly lower than in asthenoteratospermic men (p = 0.049) and oligoasthenoteratospermic men (p = 0.001) a...

background and aims. reactive hyperplasias (rhs) are common oral mucosal lesions caused by irritation of the mu-cosa. the aim of this study was to evaluate the frequencies of various types of oral rhs in a university clinic. materials and methods. oral rh cases, undergone biopsy in a four-year period, were studied retrospectively. data including age and gender as well as the location and clinic...

background: it is proved that testis is sensitive to electromagnetic field (emf) and its damage results in infertility. exposure to emf induces reactive oxygen species production and affects on anti-oxidants defense mechanisms. metallothionein (mt) is a name for a group of low molecular weight (6-7 kda), sulfhydryl rich proteins. expression of mt1 and mt2 genes in testis tissue after emf exposu...

objective(s) homocysteine, hs-crp and fibrinogen are three novel cardiovascular risk factors. the aim of this study was to examine the effect of a single bout of circuit resistance exercise on homocysteine, hs-crp and fibrinogen levels in healthy and inactive men. materials and methods the subjects were randomly divided into the experimental group (n= 14) and the control group (n= 9). circuit t...

In this paper, we describe a reactive robot architecture that uses fast re-planning methods to avoid the shortcomings of reactive navigation, such as getting stuck in box canyons or in front of small openings. Our robot architecture differs from others in that it gives planning progressively greater control of the robot if reactive navigation continues to fail, until planning controls the robot...