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Open AccessArticle
6 Pages, 830 KB Download PDF

The First Study on Ionospheric Peak Variability over Equatorial Africa (COSMIC-2)

Advances in Science, Technology and Engineering Systems Journal, Volume 10, Issue 4, Page # 14–19, 2025; DOI: 10.25046/aj100402
Abstract:

In regions like the African equatorial region, where ground-based sensors like ionosondes and incoherent scatter radars are limited, satellite-based radio occultation (RO) observations offer a new alternative for ionospheric data collecting and optimization. Using RO measurements from the mostly newly launched COSMIC-2 (Constellation Observing System for Meteorology, Ionosphere, and Climate-2) mission, hence, the equatorial Africa,…

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(This article belongs to Section Meteorology & Atmospheric Sciences (MAS))
Open AccessArticle
7 Pages, 646 KB Download PDF

Types and Concentrations of Catalysts in Chemical Glycerolysis for the Production of Monoacylglycerols and Diacylglycerols

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 612–618, 2021; DOI: 10.25046/aj060166
Abstract:

Monoacylglycerol (MAG) and diacylglycerol (DAG) are structured lipids that have been widely used in various pharmaceutical, cosmetic, and food industries. MAG and DAG are generally produced by chemical glycerolysis. Chemical catalysts have been shown to be more efficient, economical, and effective. This study summarizes and discusses the factors that affect the synthesis of MAG and…

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(This article belongs to Section Food Science & Technology (FST))
Open AccessArticle
9 Pages, 1,196 KB Download PDF

Routing Protocols for VANETs: A Taxonomy, Evaluation and Analysis

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 1, Page # 77–85, 2020; DOI: 10.25046/aj050110
Abstract:

VANET as a subclass of MANET is composed of a set of vehicles equipped with wireless transceivers, to build dynamic networks without the need of any pre-existing infrastructure. Over the last few decades, the area of routing protocols in VANETs has been extensively studied. Nevertheless, this area remains even more challenging due to some features…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Network Engineering (ENW))
Open AccessArticle
14 Pages, 4,604 KB Download PDF

Building an Online Interactive 3D Virtual World for AquaFlux and Epsilon

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 6, Page # 501–514, 2018; DOI: 10.25046/aj030659
Abstract:

In today’s technology, 3D presentation is vital in conveying a realist and comprehensive understanding of a specific notion or demonstrating certain functionality for a specific device or tool, especially on the World Wide Web. Therefore, the importance of this field and how its continuous enhancement has become one of the dominant topics in web development…

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(This article belongs to the SP6 (Special Issue on Recent Advances in Engineering Systems 2018-19) & Section Interdisciplinary Applications of Computer Science (CSI))

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