Introduction: A widely accepted paradigm for the origin of chondrites maintains that chondrites represent the earliest planetesimals to form from the solar nebula and that differentiated bodies formed by the subsequent melting of chondrites. A challenge to this paradigm comes from physical models of accretion that require rapid accretion of ~10 km planetesimals that are then melted by the heat ...

This paper deals with production of hard metal by powder metallurgy and its effect on the environment. Hard is a composite material that consists tungsten carbide as refractory phase cobalt or nickel soft binder phase. It cannot be produced classical casting technology. Owing to excellent properties, such high hardness, wear heat resistance etc., can applied in variety industrial fields. Powder...

objective the lennox-gastaut syndrome (lgs), one of the most difficult epilepsy syndromes to treat, is characterized by a triad of intractable seizures of various types, a slow (< 2.5-hertz) spike-wave pattern in eeg and mental retardation. the aim of this study was to evaluate the efficacy and safety of lamotrigine as add-on therapy in intractable epilepsy of children with lgs. materials & met...

objective midazolam is a significant and effective drug for control of a life-threatening condition, generalized and partial refractory convulsive status epilepticus. the goal of this study was evaluation of midazolam efficacy for management of this serious disease and its two side effects, hypotension and respiratory failure. materials & methods our study was done using a quasi experimental me...