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The application of prestressing steel is restricted in highly corrosive environment area due to corrosion of prestressing steel, which leads to reduction in strength and it may cause sudden failure. Carbon textile is considered as an alternate material due to its corrosive resistance property, high tensile strength and perfectly elastic. In this study, an experimental investigation was carried out to study the flexural behavior of prestressed and non-prestressed carbon textile reinforced concrete plates.

9p thayboitinhyeu 02-03-2020 28 2   Download

Subspace of signal is convenional concept and very useful for applying to communication theory. In MIMO, the transmit beams can be created based on this concept, that can be predicted channel fading matrix. Here, the paper considers good subspace for transmitter can form for these beams. Moreover, the author using simulation to show higher capacity given by these beams than conventional method of creating transmit beam.

7p minhxaminhyeu4 15-07-2019 15 0   Download

5A, 4A and 3A zeolites were successfully prepared using solid seeds at pilot scale. The adsorption properties of 5A, 4A and 3A zeolites were determined by adsorption isotherm method. The results showed that water adsorption capacity and rate of 5A and 4A zeolites were higher than those of 3A zeolite. Even at low vapor pressure of water of 4 mmHg, adsorption capacity of 5A, 4A and 3A zeolites also reached about 23%, 22% and 17%, respectively, and was much higher than that of silicagel (5%).

5p uocvong03 24-09-2015 89 7   Download