in this research, we investigated the glottal wave of persian vowels, using electroglottography. in the first level, the properties of vowels glottal wave were analyzed. in the second level, the glottal wave between male and female speakers were  compared. contact quotient is the glottal wave parameter which was analyzed. data included six persian vowels and the glottal wave recorded using elec...

Trade liberalization and laissez-faire economics are altering the structure of agricultural production and trade. The principle of comparative advantage, a classic tenet of economics, is a useful tool for understanding the future of world agriculture. This study employs a " Revealed Comparative Advantage " approach to investigate patterns of comparative advantage among six major wool exporting ...

Wool grown by ewes with chronic lupinosis, induced by injections of phomopsins, was compared to that grown by control ewes and by ewes pair-fed to the feed intake of the phomopsin-treated ewes, during and after the period of phomopsin administration. Wool growth was not different between the groups during treatment. Fibre diameter and length of wool grown by the phomopsin-treated ewes were redu...

before the start of modern era in iran, opium had a particular importance in daily lives, medicine and, leisure of iranians. this trend even continued up to early years of the twentieth century and iran was a major producer of opium; almost 100 tons annually (karimi;2000). by administrating new tax rules regarding opium production, to determine governmental production and distribution only and ...

carbon nanotubes (cnts), nowadays, are one of the important nanomaterials that can be produce with different methods such as chemical vapor deposition (cvd). growing of cnts via cvd method can be influenced by several operating parameters that can affect their quality and quantity. in this article, the effects of inlet gas mixture temperature on cnt’s local growth rate, total production, and le...