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J. Exp. Theor. Anal., Volume 1, Issue 1 (September 2023) – 4 articles

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20 pages, 5435 KiB  
Review
Review of Fluorescence Lifetime Imaging Microscopy (FLIM) Data Analysis Using Machine Learning
J. Exp. Theor. Anal. 2023, 1(1), 44-63; https://doi.org/10.3390/jeta1010004 - 21 Sep 2023
Cited by 1 | Viewed by 1676
Abstract
Fluorescence lifetime imaging microscopy (FLIM) has emerged as a promising tool for all scientific studies in recent years. However, the utilization of FLIM data requires complex data modeling techniques, such as curve-fitting procedures. These conventional curve-fitting procedures are not only computationally intensive but [...] Read more.
Fluorescence lifetime imaging microscopy (FLIM) has emerged as a promising tool for all scientific studies in recent years. However, the utilization of FLIM data requires complex data modeling techniques, such as curve-fitting procedures. These conventional curve-fitting procedures are not only computationally intensive but also time-consuming. To address this limitation, machine learning (ML), particularly deep learning (DL), can be employed. This review aims to focus on the ML and DL methods for FLIM data analysis. Subsequently, ML and DL strategies for evaluating FLIM data are discussed, consisting of preprocessing, data modeling, and inverse modeling. Additionally, the advantages of the reviewed methods are deliberated alongside future implications. Furthermore, several freely available software packages for analyzing the FLIM data are highlighted. Full article
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20 pages, 1387 KiB  
Article
Geometrical Analysis of an Oscillating Water Column Converter Device Considering Realistic Irregular Wave Generation with Bathymetry
J. Exp. Theor. Anal. 2023, 1(1), 24-43; https://doi.org/10.3390/jeta1010003 - 19 Sep 2023
Cited by 2 | Viewed by 703
Abstract
Given the increasing global energy demand, the present study aimed to analyze the influence of bathymetry on the generation and propagation of realistic irregular waves and to geometrically optimize a wave energy converter (WEC) device of the oscillating water column (OWC) type. In [...] Read more.
Given the increasing global energy demand, the present study aimed to analyze the influence of bathymetry on the generation and propagation of realistic irregular waves and to geometrically optimize a wave energy converter (WEC) device of the oscillating water column (OWC) type. In essence, the OWC WEC can be defined as a partially submerged structure that is open to the sea below the free water surface (hydropneumatic chamber) and connected to a duct that is open to the atmosphere (in which the turbine is installed); its operational principle is based on the compression and decompression of air inside the hydropneumatic chamber due to incident waves, which causes an alternating air flow that drives the turbine and enables electricity generation. The computational fluid dynamics software package Fluent was used to numerically reproduce the OWC WEC according to its operational principles, with a simplification that allowed its available power to be determined, i.e., without considering the turbine. The volume of fluid (VOF) multiphase model was employed to treat the interface between the phases. The WaveMIMO methodology was used to generate realistic irregular waves mimicking those that occur on the coast of Tramandaí, Rio Grande do Sul, Brazil. The constructal design method, along with an exhaustive search technique, was employed. The degree of freedom H1/L (the ratio between the height and length of the hydropneumatic chamber of the OWC) was varied to maximize the available power in the device. The results showed that realistic irregular waves were adequately generated within both wave channels, with and without bathymetry, and that wave propagation in both computational domains was not significantly influenced by the wave channel bathymetry. Regarding the geometric evaluation, the optimal geometry found, H1/Lo = 0.1985, which maximized the available hydropneumatic power, i.e., the one that yielded a power of 25.44 W, was 2.28 times more efficient than the worst case found, which had H1/L = 2.2789. Full article
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3 pages, 211 KiB  
Editorial
Journal of Experimental and Theoretical Analyses—JETA: A New Open Access Journal for Highlighting the Results of Multidisciplinary Analyses in Science, Technology, and Engineering
J. Exp. Theor. Anal. 2023, 1(1), 21-23; https://doi.org/10.3390/jeta1010002 - 17 Jan 2023
Viewed by 1502
Abstract
As Editor-in-Chief, I am pleased to introduce Journal of Experimental and Theoretical Analyses—JETA [...] Full article
20 pages, 2976 KiB  
Article
A Preliminary Investigation of Special Types of Honey Marketed in Morocco
J. Exp. Theor. Anal. 2023, 1(1), 1-20; https://doi.org/10.3390/jeta1010001 - 05 Jan 2023
Cited by 2 | Viewed by 1980
Abstract
Background: This work aimed to perform a comprehensive investigation of organic Moroccan honeys obtained from plants of euphorbia, arbutus, and carob, based on the determination of physico-chemical profiles and volatile fingerprints. Methods: The selected analytical approach involved different techniques, including physico-chemical procedures for [...] Read more.
Background: This work aimed to perform a comprehensive investigation of organic Moroccan honeys obtained from plants of euphorbia, arbutus, and carob, based on the determination of physico-chemical profiles and volatile fingerprints. Methods: The selected analytical approach involved different techniques, including physico-chemical procedures for determination of humidity, acidity, diastase activity; solid-phase microextraction (SPME) coupled to GC-MS for aromatic fraction exploration; and ICP-MS for multi-element analysis. Results: The results obtained from the physico-chemical analyses were highly comparable to those of other commercial honeys. In 50% of samples investigated, the diastase number was just above the legal limit fixed by Honey Quality Standards. The analysis of the volatile fraction highlighted the presence of numerous compounds from the terpenoid group along with characteristic molecules such as furfural, isophorone, and derivatives. In most cases, VOCs were distinct markers of origin; in others, it was not possible to assess an exclusive source for bees to produce honey. Conclusion: The results contributed to place the three varieties of honey investigated among the commercial products available in the market. Many variables determined returned positive indications about quality and safety of these special honeys. Full article
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