Geocast is a one to many communication, where a packet is delivered to a set of spatially contagious nodes. In military and disaster management application it is a primitive communication service. We propose a Grid based Opportunistic Geocast (GOG) for spatially separated wireless sensor networks with a three tier architecture composing sensor nodes, Mobile nodes (MN) and Data MULEs (DM) with d...

We propose a universal form for quark and lepton mass matrices, which applies in a “leading order” approximation whereCP-violating phases are ignored. Down-quark mass ratios are successfully predicted in our scheme using the measured Cabibbo-Kobayashi-Maskawa mixing angles as input. Assuming an additional discrete symmetry in the neutrino sector, we obtain the “golden ratio” pattern in the lead...

The herb, Conyza aegyptiaca L., was subjected to hydrodistillation process to extract the essential oil from the whole dry plant material. Larvae and adult stages of the mosquito, Anopheles pharoensis, and the housefly, Musca domestica, were used as test model organisms representing two dipterous insect pests of medical importance. Under standard bioassay test methods, the LC50 of the oil accou...

The paper presents the first data of an unreported plant community dominated by Hordeum leporinum Link and Bituminaria bituminosa (L.) Stirt. (class Stellarietea mediae R. Tx., Lohmeyer et Preising in R.Tx. 1950). It is currently established four localities region Black Sea coast, between town Ravda Nessebar, Bulgaria. Among characteristic features are: (i) it occupies places with active human ...