Present study was to evaluate chemical penetration and repellency of locallymanufactured protective coveralls used by the workers fertilizer manufacturing units. The researchwas based on laboratory work performed completed at Dyeing Finishing Unit, Nishat MillsLimited. samples were evaluated for their resistance various laundering intervals byISO 6530:2005 test methods. Chemical three different...

the presence of tribolium castaneum (herbst) in a stored food results in contamination and substantial economic damage due to loss of the products and a decrease in nutritional value. this study was conducted to determine the pesticidal and pest repellent activities of roots of laportea crenulata gaud. against t. castaneum. pesticidal activity was determined using surface film method, whereas, ...

Previous studies have shown that δ-octalactone is an important component of the tsetse-refractory waterbuck (Kobus defassa) repellent odour blend. In the present study, structure-activity comparison was undertaken to determine the effects of the length of the side chain and ring size of the lactone on adult Glossina pallidipes and Glossina morsitans morsitans. The responses of the flies to each...

D EET ([N-N]-diethyl-mtoluamide) is widely used around the world as a repellent for mosquitoes and other biting insects. It was originally identified by a structure–activity study using synthetic compounds (1). Recently, a number of new compounds with similar activity [e.g., picaridine (2)] have been identified, but DEET remains the gold standard. Despite a tremendous number of studies (3), how...

The calculus of looping sequences is a formalism for describing the evolution of biological systems by means of term rewriting rules. We enrich this calculus with a type discipline, derived from the requirement of certain elements and the repellency of others, and a type semantic, based on rules respecting different biological properties.