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...
Experimental study on the effect of salinity on growth rates of Arctic-sea-ice algae from the Greenland Sea
An Arctic bottom ice algal community collected from a pack ice floe in the Greenland Sea in autumn 1995 was cultured at 10 salinities ranging from 4.0 to 90.8 PSU for 19 days. Growth of species was determined by microscopical analysis of samples taken every 3 to 5 days. During the experiment the abundance of the algae increased over a wide salinity range from 4.0 to 74.0 PSU, but decreased at t...
متن کاملeffect of oral presentation on development of l2 learners grammar
this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...
15 صفحه اولA sea-ice thickness retrieval model for 1.4 GHz radiometry and application to airborne measurements over low salinity sea-ice
In preparation for the European Space Agency’s (ESA) Soil Moisture and Ocean Salinity (SMOS) mission, we investigated the potential of L-band (1.4 GHz) radiometry to measure sea-ice thickness. Sea-ice brightness temperature was measured at 1.4 GHz and ice thickness was measured along nearly coincident flight tracks during the SMOS Sea-Ice campaign in the Bay of Bothnia in March 2007. A research...
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ژورنال
عنوان ژورنال: Thermal Science
سال: 2018
ISSN: 0354-9836,2334-7163
DOI: 10.2298/tsci1804563l