Which Suicides Are Reported in the Media – and What Makes Them “Newsworthy”?

Polymeric Gas Separation Membranes: What Makes them Industrially more Attractive?

kids and teenager are sleepy at school because the electronic media they have in their bedrooms leads them to have delayed sleep phase disorder (dspd)

bserved by many teachers that most of the time, mumbling and searching for their intended words, students complain why they have forgotten the words they have learned in the previous semesters. they ask for some new ways that may help them to recall and apply the learned words more efficiently, since as they declare one of the most important skills in foreign language learning is having a g...

Nanocatalysts: What Are the Different Types of Them in Biodiesel Production?

2 00 4 What are the left - handed media and what is interesting about them ? ∗

We review the intensively discussed ideas about wave propagation and refraction in media where both electric permittivity and magnetic permeability are negative. The criticism against negative refraction as violating the causality principle is considered. Starting from the initial wave equations, refraction of beams at the boundary of a left-handed medium is analyzed. The physics of a perfect l...

What are the left-handed media and what is interesting about them?

We review the intensively discussed ideas about wave propagation and refraction in media where both electric permittivity and magnetic permeability are negative. The criticism against negative refraction as violating the causality principle is considered. Starting from the initial wave equations, refraction of beams at the boundary of a lefthanded medium is analyzed. The physics of a perfect le...