Selected Papers from the 3rd International Electronic Conference on Applied Sciences

A special issue of Applied Sciences (ISSN 2076-3417).

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 5732

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Department of Engineering, University of Campania Luigi Vanvitelli, Via Roma 29, 81031 Aversa, Italy
Interests: optical sensors; biosensors and chemical sensors; optical fiber sensors and optoelectronic devices
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CICECO-Aveiro Institute of Materials, Physics Department, University of Aveiro, Aveiro, Portugal
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Electromagnetism and Telecommunication Department, Université de Mons, Mons, Belgium
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Department of Chemistry, Universita degli Studi di Pavia, Pavia, Italy
Interests: sensors; electrochemistry; ion exchange polymers; molecularly imprinted polymers; separation science

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Physics Division, Department of Applied Sciences, National Institute of Technology Delhi, Narela, Delhi 110040, India
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Special Issue Information

Dear Colleagues,

This Special Issue is in cooperation with the 3rd International Electronic Conference on Applied Sciences, organized by Applied Sciences­, from 1 to 15 December 2022 on the MDPI Sciforum platform. We welcome submissions from participants of the conference. In particular, selected extended versions of the presented papers will be published in this Special Issue of Applied Sciences; they will undergo full peer review and will receive a discount on the article processing charge. The following areas were covered:

  • Applied Biosciences and Bioengineering;
  • Chemistry and Materials Science;
  • Computing and Artificial Intelligence;
  • Electrical, Electronics and Communications Engineering;
  • Energy Science and Technology;
  • Environmental and Earth Sciences;
  • Mechanical Engineering;
  • Nanotechnology and Applied Nanosciences;
  • Optics and Lasers;
  • Sensors, Instrumentation and Measurement Science.

Prof. Dr. Nunzio Cennamo
Prof. Dr. Yangquan Chen
Prof. Dr. Roger Narayan
Dr. Carlos Marques
Dr. Christophe Caucheteur
Dr. Maria Pesavento
Dr. Anuj K. Sharma
Guest Editors

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Published Papers (2 papers)

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Research

14 pages, 3965 KiB  
Article
Multiple Phase Stepping Generation in Alkali Metal Atoms: A Comparative Theoretical Study
by Abu Mohamed Alhasan, Abeer S. Altowyan, A. Y. Madkhli and Salah Abdulrhmann
Appl. Sci. 2023, 13(6), 3670; https://doi.org/10.3390/app13063670 - 13 Mar 2023
Cited by 1 | Viewed by 977
Abstract
We theoretically demonstrated optical phase switches in light storage-like experiments. Typical light storage (LS) and retrieval experiments consist of the probe field in the probe channel with writing and reading fields across the drive branch, as well as its recovery. The probe and [...] Read more.
We theoretically demonstrated optical phase switches in light storage-like experiments. Typical light storage (LS) and retrieval experiments consist of the probe field in the probe channel with writing and reading fields across the drive branch, as well as its recovery. The probe and first drive pulses as the standard electromagnetically induced transparency (EIT) effect of storing light are used in the proposed scheme for the atomic excitations. A train of probe pulses is used after a short storage period to induce Raman gain in the drive channel. The proposed scheme was applied to alkali-metal atoms such as 23Na, 87Rb, and 39K vapours. Spatiotemporal phase variations for generated drive pulses were found to shape in the form of discrete phase distributions. The proposed approach in the process of obtaining phase discrete distributions for different irradiation intensities was tested. For weak fields, the discrete distributions were distinct as a result of the differences in the upper hyperfine structure (hf) and the atomic relaxations. However, for moderate fields, the discrete phase distributions are smeared by the atomic relaxations. Full article
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13 pages, 2357 KiB  
Article
Characteristics of Commercial Effervescent Tablets Using Selected Pharmacopeial and Novel Analytical Methods
by Michał Meisner, Piotr Duda, Beata Szulc-Musioł and Beata Sarecka-Hujar
Appl. Sci. 2023, 13(5), 3171; https://doi.org/10.3390/app13053171 - 01 Mar 2023
Cited by 4 | Viewed by 3265
Abstract
In the present study, we aimed to determine whether the shelf life of effervescent tablets may be assessed during storage using total directional hemispherical reflectance (THR). We also analyzed selected pharmacopeial parameters of the tablets and used X-ray microtomography to assess the internal [...] Read more.
In the present study, we aimed to determine whether the shelf life of effervescent tablets may be assessed during storage using total directional hemispherical reflectance (THR). We also analyzed selected pharmacopeial parameters of the tablets and used X-ray microtomography to assess the internal structure of the tablets. Two types of effervescent tablets of one commercial product containing magnesium and vitamin B6 (expired and unexpired) were analyzed. In addition, randomly selected unexpired and expired tablets were dried in a vacuum oven for 24 h at 50 °C. The expired effervescent tablets disintegrated in a significantly shorter time than the unexpired tablets (68 s vs. 83 s, p = 0.016). The remaining pharmacopeial parameters did not differ between the two types of tablets. We observed that expired effervescent tablets showed lower mean values of THR in five spectral ranges, which indicates that a greater amount of radiation beam was transmitted into their inner structure than for unexpired tablets. The density of the inner structure assessed on the microtomographic scans differed significantly between all the analyzed tablets (p < 0.001). The highest mean density was observed in the case of the unexpired tablets dried in a vacuum oven (1.273 g/cm3), while the lowest density was observed in the case of the expired tablets (1.261 g/cm3). The expired tablets had a larger pore diameter compared to the unexpired tablets (0.095 mm vs. 0.074 mm, respectively; p = 0.007). Additionally, the percentage of porosity was higher in the expired tablets compared to the unexpired tablets (p < 0.001). Full article
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