In this paper, the optical properties of one dimensional fractal structures are investigated. We consider six typical fractal photonic structures: the symmetric dual cantor-like fractal structure, the asymmetric dual cantor-like fractal structure, the single cantor-like fractal structure, the symmetric dual golden-section fractal structure, the asymmetric dual golden-section fractal structure a...

In Iran 8% of HIV- infected cases are women. Since most of them are young and in childbearing ages, in case of becoming pregnant and not receiving preventive measures, they can infect their child. Without Preventive measures transmission rate is 15 to 45 percent. Several factors such as sever stage of HIV and AIDS ,CD4 low count, high viral loud, acute retroviral phase, STDs, vaginal delivery, ...

We describe our experiences verifying real communications hardware using machine-assisted proof. In particular we re ect on the errors found, problems encountered and the bottlenecks that slowed the progress of the proofs. We also note techniques which would alleviate the problems. Most of the problems we discuss only become signi cant when large designs are veri ed.

zika virus is an arbovirus identified first time in 1947 in uganda. zika epidemic is a threat far greater than the ebola outbreak. the world health organization has urged asian countries to be vigilant about the risk of spreading zika virus and preventive measures to control it. in iran, 64 species of mosquitoes from culicidea family have been reported three of which belong to the aedes genus, ...

in order to discover the chronology of hadiths, orientalists have adopted such various methods as text analysis, analysis of chain of transmission, and synthetic method of analysis of chain of transmission and text. in the third method, all various forms of a hadith are collected from different sources first, and their texts and chains of transmission are compared with one another then. through...

There is a great resolution calling for smart grids in recent years. Introduction of new technologies, that make the network flexible and controllable, is a main part of smart grid concept and a key factor to its success. Transmission network as a part of system network has drawn less attention. Transmission switching as a transmission service can release us from load shedding and remove the co...

Helicobacter pylori (H.pylori) is a gram-negative bacterium that has infected more than half of the world's population. This pathogen colonizes the human gastric mucosa and is usually acquired during childhood. It is an important cause of peptic ulcers, chronic gastritis and stomach cancer. Among the risk factors for acquisition of H. pylori infection, poor socioeconomic status, poor sanitizati...