ABSTRACT
The method for reconstruction of an adiabatic potential energy curve from experimental dispersed fluorescence spectra has been developed. The novelty of the method relies on a unique approach of simultaneous use of [Formula: see text] and [Formula: see text] parts of the spectrum. The method is based on the Genetic Algorithm (GA) procedure and determines potential energy curve integrally, below and above the dissociation energy limit. The method was tested on the artificially generated reference spectrum as well as experimental spectrum of [Formula: see text] transition in Hg[Formula: see text]. The tests show very good accuracy of simulation based on GA results with artificially generated reference spectrum as well as with the experimental one.
ABSTRACT
Spectroscopic rotational characterization of two υ'=0 and υ'=1 vibrational components of the E3Σ1+(5s6s3S1) Rydberg state of CdNe van der Waals (vdW) complex has been performed using specially designed approach. In optical-optical double resonance (OODR) process, a selective J-excitation has been realized using the [Formula: see text] 3P1) transition, with υâ³=0 level of the [Formula: see text] state as an intermediate in the excitation from υ=0 of the [Formula: see text] 1S0) state. As a result, Bυ=0' and Bυ=1' rotational constants have been determined as well as the Re' equilibrium internuclear separation in the E3Σ1+ - state potential well.
ABSTRACT
Melanoma is one of the most lethal and rapidly growing cancers, causing many deaths each year. This cancer can be treated effectively if it is detected quickly. For this reason, many algorithms and systems have been developed to support automatic or semiautomatic detection of neoplastic skin lesions based on the analysis of optical images of individual moles. Recently, full-body systems have gained attention because they enable the analysis of the patient's entire body based on a set of photos. This paper presents a prototype of such a system, focusing mainly on assessing the effectiveness of algorithms developed for the detection and segmentation of lesions. Three detection algorithms (and their fusion) were analyzed, one implementing deep learning methods and two classic approaches, using local brightness distribution and a correlation method. For fusion of algorithms, detection sensitivity = 0.95 and precision = 0.94 were obtained. Moreover, the values of the selected geometric parameters of segmented lesions were calculated and compared for all algorithms. The obtained results showed a high accuracy of the evaluated parameters (error of area estimation <10%), especially for lesions with dimensions greater than 3 mm, which are the most suspected of being neoplastic lesions.
Subject(s)
Melanoma , Skin Diseases , Skin Neoplasms , Algorithms , Body Image , Humans , Melanoma/diagnostic imaging , Skin Neoplasms/diagnostic imagingABSTRACT
We report on the observation of a gerade Rydberg electronic energy state of Cd2 van der Waals (vdW) complex vibrationally cooled in a free-jet expansion beam. Cd2 in the beam were excited from the X10g+(51S0) ground via the b30u+(53P1) intermediate to the final gerade state using optical-optical double resonance (OODR) method. A pronounced vibrational progression with partly resolved isotopologue components was recorded and analyzed. The analysis of isotopic separation indicated the excitation to high vibrational levels (υ'≈50). A comparison with the result of ab initio calculations reveals, that Cd2 was most probably excited to the 31g -state correlating with the 63S1 atomic asymptote.
