Given the circumstances of countries in which wars, political instability, and other uncertainties are passing that make atmosphere impure, have caused many diseases, one these diseases has spread widely is cancer. Cancer a very common disease, them affect person lead him or her to death. Among been recent years specifically brain tumors they need early diagnosis do not cause death person. Furt...

The quantum measurement problem as formalised by Bassi and Ghirardi [Phys. Lett. A 275 (2000)373] without taking recourse to sharp apparatus observables is extended to cover impure initial states. PACS: 03.65.Bz

We consider the dynamics of an ionic crystal with a single impurity in the vicinity of the polariton resonance. We show that if the polariton spectrum of the host crystal allows for a gap between polariton branches, the defect gives rise to local states with frequencies within the gap. Despite the atomic size of the impurity we find that the in-gap local states are predominated by long-waveleng...

slow sand filters are as a proper technology for pre-treatment of raw water, with a fine and medium trubidity in small communities in developing countries. thus, with a minimum operation cost and minimum need for expest bodies have the maximum efficiency. the purpose of this research is carried out to evaluate the efficiency of two processes of horizontal flow roughing filter and vertical flow ...

This paper establishes a sound and complete semantics for the impure logic of ground. Fine (Review Symbolic Logic, 5(1), 1–25, 2012a) sets out system pure ground, one in which formulas between ground-theoretic claims hold have no internal logical complexity; it provides system. (2012b) [§§6-8] an that extends rules original with truth-functional connectives, first-order quantifiers, ?-abstracti...