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Introduction
Svetla Lekova currently works at the Department of Idustrial Automation, University of Chemical Technology and Metallurgy. Their most recent publication is 'Using differential scanning calorimetry, laser refractometry, electrical conductivity and spectrophotometry for discrimination of different types of Bulgarian honey.
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Publications
Publications (10)
Simulation-based training is used in various fields. One of these fields is medical education. This study researches the use of Augmented Reality (AR) for laparoscopic surgeries and the settings for surgical training. AR adds an overlay of computer-generated content on a camera live image. AR helps medical staff to improve diagnostics and surgical...
The present study focuses on statistical procedures for assessing the consistency between laboratory measurements of several parameters performed by different methods in different laboratories. The aim is to show that statistics is a powerful tool for analyzing measurement data and has a significant role in engineering practice. The subject of anal...
Linden honey is among the most common monofloral types of honey in the region of Bulgaria, and it has no reference values for its electrical conductivity (EC) in the international and national standards. Three variants of a model of the EC dependence on the concentration of linden honey (Gaussian, quadratic and cubic function based ones) are propos...
A hybrid algorithm for searching the global minimum of a multimodal function is proposed in the paper. It is a two stages search technique, the first stage is the twice carrier wave based chaotic optimization algorithm (COA) for global searching, and the second stage is the gradient descent algorithm (GDA) for accurate local searching. The chaotic...
The potential of several physical methods for investigation of the botanical origin of honey has been discussed. Samples from the three most prevalent types of honey in Bulgaria (acacia, linden and honeydew) have been used. They have been examined by laser refractometry, UV, VIS and FTIR spectroscopy, electric conductivity measurement and different...
The aim of the article is to investigate the potential of honey discrimination (on the base of its botanical origins) by Vis spectroscopy and chemometric analysis. Fifty-five samples from three types of honey (acacia, linden, and honeydew) are measured by a spectrophotometer " Helios Omega " with recorded wavelength range of 380~780 nm for calibrat...
The aim of the article is to present results on the potential of honey discrimination (on the base of its botanical origins) by Vis-NIR spectroscopy and subsequent statistical cluster analysis. Thirty-five samples from three types of honey (acacia, linden, and honeydew) are measured by a spectrophotometer "Cary100" with recorded wavelength range of...
In the present work, a generalized mathematical model is considered for describing the process of viscoelastic deformation of poly- mer materials. The model is applied for describing the creep of poly- ethylene in the conditions of diffusion in liquid environment interacting chemically with the polymer and variable loading. The orthogonal expansion...
In this paper we consider generalized mathematical model describing the process of viscoelastic deformation of polymer materials. It describes the polyethylene creep under diffusion of liquid environment not interacting chemically with the polymer. We analyse here some results of certain tests produced with samples which have reached beforehand dif...
