“The longitudinal strength of wooden ships. First report”

the effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)

cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...

Two Erroneous, Commonly Cited Examples of "Swordfish" Piercing Wooden Ships

The Structures of English Wooden Ships: William Sutherland's Ship, circa 1710

Beginning early in the sixteenth century, English shipbuilding methods underwent a major revolution with the introduction of Mediterranean/Iberian carvel, or plank-on-frame, techniques in place of the earlier, northern European clinker or lapstrake approach. In the older method, the lower edge of each strake of the planking overlapped on the outside the upper part of the strake below, and clenc...

The First Report of Lymphocutaneous Sporotrichosis

A 55 years old male farmer was referred to the Medical Mycology Department, School of Public Health, Tehran University with an ulcerative lesion on his left index finger and nodular lesions along the lymphatic of the left hand.  The Patient explained that he had been injured by a wire entanglement,in the site of lesion, about one year before.  Direct microscopic examination of the biopsy materi...

efl students gender and socioeconomic status: the use of politeness strategies in the first and second languages

within the components of communicative competence, a special emphasis is put on the “rules of politeness,” specifically the politeness strategies (brown and levinson, 1978) that speakers deploy when performing the request speech act. this is because the degree of imposition that making a request places upon one’s interlocutor(s) has been seen to be influenced by several factors among which, as ...