نتایج جستجو برای: regrowth
تعداد نتایج: 3925 فیلتر نتایج به سال:
In this research the effects of cold were evaluated on coleoptile growth of 18 rice genotypes in two separate experiments. The first experiment was carried out as factorial based on randomized complete block design with three replications. In this experiment, two factors were including genotypes at 18 levels and temperature at 5 levels (9, 13, 17, 21 and 25 C°). The seeds of genotypes don’t ger...
Intermediate wheatgrass (Thinopyrum intermedium; IWG) is a perennial grass under development as grain and forage crop. Although IWG known for its ability to take up nitrate improve water quality, seasonal nitrogen (N) demand uptake by not well known. We measured shoot, root, production, tissue N concentration, soil mineral at multiple plant growth stages in 1- 2-year-old stands fertilized with ...
Local relapse of tumors after radiation therapy remains a challenge in oncology. To devise rational approaches for preventing this relapse, we have to improve our understanding of how new vessels form in previously irradiated tumors. We propose that tumor regrowth after local irradiation is dependent on blood vessel formation by local endothelial cells without the need for recruitment of endoth...
In this paper, a comparison is made between the spectral regrowth of quadrature phase shift keyed (QPSK) and offset QPSK (OQPSK) signals as they go through non-linear amplifications. Contrary to existing approaches that assume the power amplifier input is Gaussian, our analysis is carried out without the Gaussian assumption, by using higher-order statistics. We show that it is possible to asses...
A statistical technique is presented for the characterization of spectral regrowth at the output of a nonlinear amplifier driven by a digitally modulated carrier in a digital radio system. The technique yields an analytical expression for the autocorrelation function of the output signal as a function of the statistics of the quadrature input signal transformed by a behavioral model of the ampl...
Electroluminescence at 1.28mum is observed in a nanopatterned silicon test structure that has been subjected to carbon implantation followed by solid-phase epitaxial regrowth for recrystalization. The sub-bandgap luminescence comes from a di-carbon complex known as 'G center'. Enrichment of silicon with carbon atoms has been achieved in a procedure consisting of two implantations and solid-phas...
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