Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
This work presents a study on the possibility of obtaining hydroxyapatite thin layers on porous polyurethane support using a modified coating method, which is based on a biomimetic technique. To investigate bone-like apatite coatings formation on polyurethane surface, two types of solutions such as supersaturated calcification solution (SCS) and modified SCS (M-SCS) were used. The modified supersaturated calcification solution was prepared with added
Read moreIn order to improve drought resistance of sunflower in the context of global warming and to accelerate this improvement, introgression of resistance genes from wild species was attempted, using embryo rescue techniques, combined with classical procedures to improve crossing, self-pollination and backcrossing. Thirty four approved or pending approval lines (B and C) were tested for combination capacity with the wild Helianthus argophyllus. After crossing
Read moreIn order to improve drought resistance of sunflower in the context of global warming and to accelerate this improvement, introgression of resistance genes from wild species was attempted, using embryo rescue techniques, combined with classical procedures to improve crossing, self-pollination and backcrossing. Thirty four approved or pending approval lines (B and C) were tested for combination capacity with the wild Helianthus argophyllus. After crossing
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Read moreThe paper addresses the doubly iterative decoding of space-time turbo codes with a large number of transmit and receive antennas. In the doubly iterative scheme, the decoder uses preliminary soft values of the coded symbols and the soft estimates only for Quadratic-Phase-Shift-Keying (QPSK) modulation have been determined. In this paper we propose and explain the soft estimates related to the signal constellations for 8-PSK and 16-PSK modulations.
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