Stark widths for 23 transitions in Al IV have been calculated by employing the modified semiempirical method. The results are obtained an electron density of 1017 cm−3 and temperatures from 10,000 K to 160,000 K. this investigation used examination influence broadening stellar spectra, as well check width regular behavior similarites within spectrum.

Processes with almost periodic covariance functions have spectral mass on lines parallel to the diagonal in the two-dimensional spectral plane. Methods have been given for estimation of spectral mass on the lines of spectral concentration if the locations of the lines are known. Here methods for estimating the intercepts of the lines of spectral concentration in the Gaussian case are given unde...

variations in biochemical features are extensive among cells. identification of marker that is specific for each cell is essential for following the differentiation of stem cell and metastatic growing. fourier transform infrared spectroscopy (ftir) as a biochemical analysis more focused on diagnosis of cancerous cells. in this study, commercially obtained cell lines such as human ovarian carcin...

Spectral lines allow us to probe the thermodynamics of solar atmosphere, but shape a single spectral line may be similar for different thermodynamic solutions. Multiline analyses are therefore crucial, computationally cumbersome. We investigate correlations between several chromospheric and transition region restrain solutions atmosphere during flares. used machine-learning methods capture stat...