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...
The carbon budget of the North Sea
The carbon budget of the North Sea H. Thomas, Y. Bozec, H. J. W. de Baar, K. Elkalay, M. Frankignoulle, L.-S. Schiettecatte, and A. Vieira Borges Royal Netherlands Institute for Sea Research (NIOZ) Department of Marine Chemistry and Geology P.O. Box 59, NL-1790 AB Den Burg, Texel, The Netherlands Chemical Oceanography Unit, MARE, University of Liège, Institut de Physique (B5), B-4000 Liège, Bel...
متن کاملOrganic Carbon Dynamics in the Baltic Sea
Coastal seas constitute a link between land and the open ocean, and therefore play an important role in the global carbon cycle. Large amounts of carbon, of both terrestrial and marine origin, transit and are transformed in these waters, which belong to the more productive areas of the oceans. Despite much research has been done on the subject, there are still many unknown factors in the coasta...
متن کاملinvestigation of the electronic properties of carbon and iii-v nanotubes
boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...
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ژورنال
عنوان ژورنال: Biogeosciences Discussions
سال: 2011
ISSN: 1810-6285
DOI: 10.5194/bgd-8-4841-2011