منابع مشابه
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...
Trace metal pollution in the Mediterranean Sea
In the Mediterranean Sea, the distribution of dissolved zinc, copper, lead and cadmium is primarily controlled by marine circulation, surface source dynamics and biological new production. We show that the present relatively high content of these metals in the surface layer is due to non-steady-state cycles as a result of source increases probably following increases in industrial, agricultural...
متن کاملDetermination of oil and domestic pollution indicators on the south- eastern Black Sea coastal water
Black Sea receives 1,125,839 tons of organic matter, 575,000 tons mineral nitrogen, 55,000 tons mineral phosphorus, 30,000 tons organic phosphorus, 90,000 tons iron, 206,000 tons petroleum and petroleum products, 48,000 tons surfactant, 12,000 tons zinc, 67,000 tons manganese, 4,500 tons lead, 2,800 tons copper, 900 tons cadmium and 80 tons of mercury in a year from land based sources. All thes...
متن کاملOil Investment in the North Sea
Investment in the United Kingdom Continental Shelf (UKCS) involves three separate but highly interrelated activities: exploration, development and production. The exploration and extraction decisions were analysed recently by Pesaran (1 990) and Favero (1 990). The aim of this paper is to provide a model of the investment decision in the UKCS, where the development process is explicitly modelle...
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ژورنال
عنوان ژورنال: The Journal of the Geological Society of Japan
سال: 1997
ISSN: 0016-7630,1349-9963
DOI: 10.5575/geosoc.103.v