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95 articles for “Ar-Atmosphere”
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Research ArticleOpen accessIn the abstractSimulation of Production of Anhydrous Bioethanol using Glycerol and 1-Butyl-3-Methylimidazolyl-Tetrafluoroborate in the Aspen Plus SimulatorJosé Izaquiel Santos da Silva, Lílian da Silva Félix, Mariana Martins Vieira et al.Biofuels are present in the global scenario as an energy source derived from organic biomass, representing an economic and environmental alternative. They are a renewable source of energy with low rates of pollutants emissions and, consequently, less carbon dioxide is released into the atmosphere. The obtaining of bioethanol is originated from a fermentation process, in which a multi-component mix is … …American Journal of Engineering and Applied Sciences, Vol. 14, Issue 2 · 16 Jun 2021 · 7,109 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalysis of Non-Equilibrium Phase Change in Transfers at Low Water Content by Considering the Film FlowMarcel Bawindsom Kébré, François Ouédraogo, Bétaboalé Naon et al.In this study, we analyze the effect of non-equilibrium phase change on transfer at low water content in a sandy soil by considering the contribution of film flow in the motion of liquid water. Indeed, most of the non-equilibrium study methods use for hydraulic conductivity, the van Genuchten-Mualem (VGM) capillary model which does not consider the film flow occurred at … …American Journal of Environmental Sciences, Vol. 17, Issue 1 · 1 Jun 2021 · 6,395 accessesView PDFCite
Research ArticleOpen accessIn the abstractA First-Class Ticket to the Planet Mars, PleaseRelly Victoria Petrescu, Raffaella Aversa, Bilal Akash et al.The paper presents some aspects related to the current stage in the aerospace industry, referring to the current possibilities of moving in space. The main problem that has kept mankind for so many millennia has been the less speed of movement, but also the difficult exit into outer space. For a ship to be able to defeat gravitational forces and … …Journal of Aircraft and Spacecraft Technology, Vol. 1, Issue 4 · 1 Dec 2017 · 7,003 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessment of Heavy Metal Cu, Pb, Cd Contamination in Dust in Zahedan City using Pollution Indices and GIS and Geo Statistics Technologies, Zahedan, IranKaveh Ostad-Ali-Askari, Hossein Gholami, Meysam Madadi et al.Assessment of heavy metal contamination is of great importance given its hazardous impacts on humans and the environment. Atmosphere is an important path for heavy metals transportation and plays a major role in the bioaccumulation of heavy metals in the environment. The present research aims to assess soil pollution to heavy metals of lead, copper and cadmium in Zahedan using … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 4 · 30 Dec 2020 · 6,860 accessesView PDFCite
Research ArticleOpen accessIn the abstractDesign of an Automatic Umbrella Actuated through Water and Temperature SensorsMeher Dev Gudela, Atharv Kulkarni, Abhishek Dhotre, Kshitiz ShrimaliThe aim of this thesis is to make a smart umbrella which can reduce human effort due to its functionality and can target the market due to its unique design, is really important in modern society at risk of rainfall and wind without coverage in place. The purpose of this project is to make such an umbrella that is really … …Journal of Mechatronics and Robotics, Vol. 4, Issue 1 · 29 Sep 2020 · 17,494 accessesView PDFCite
Research ArticleOpen accessIn the abstractFabrication of Ni, Si and Mg Supersaturated Solid Solutions in Al by Mechanical AlloyingA. Sedano, A. Molina, S.A. Serna et al.In this work, a comparison between the synthesis process of nanostructured Al base alloys modified with Si, Ni and Mg and the formation of their respective supersaturated solid solution is presented. The samples were obtained via Mechanical Alloying (MA) at a speed of 300 RPM for 2, 5, 10, 20 and 30 h under an inert Ar atmosphere. Lattice parameter … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 1 · 23 Feb 2020 · 7,260 accessesView PDFCite
Research ArticleOpen accessIn the abstractVirtual Assessment of air Pollution Dispersion from Anthropogenic Sudden ExplosionMarvel Lola Akinyemi, Moses Eterigho Emetere, Mojisola Rachel UsikaluThe control of air pollutants from anthropogenic sources seems almost impossible due to numerous influencing factors present in the atmosphere. In this study, we carried out a virtual mathematical experimentation using Math CAD, Mat lab and analytical approximation to estimate the dimensional impact of initial pollutant plume cloud from a sudden volcanic blast and the dynamics of its wind field. … …American Journal of Environmental Sciences, Vol. 12, Issue 2 · 9 Apr 2016 · 7,157 accessesView PDFCite
EditorialOpen accessIn the abstractProblems of Ultra-High Energy Cosmic RaysAnna V. UrysonCosmic rays are energetic particles coming to the Earth from space. They bombard the atmosphere producing cascades of particles that spread over a large area when they reach the ground. Cosmic ray energies vary in the wide band from about 108 eV up to few 1020 eV. It is established that most particles with energies of ~ (108-109) eV come … …Space Science International, Vol. 2, Issue 1 · 6 Dec 2014 · 13,854 accessesView PDFCite
Research ArticleOpen accessIn the abstractDetermination and Source Apportionment of Selected Heavy Metals in Aerosol Samples Collected from SebeleAlfred Sello Likuku, Gilbert Kabelo Gaboutloeloe, Khumoetsile B. MmolawaBush fires and dust in the dry winter months establish moderately high background levels of aerosols. Emissions into the atmosphere by copper mines, coal mines and vehicular emissions are all possible sources of air pollution with heavy metals. Although there has been assessment and monitoring of heavy metals and their air pollution in other countries such as Brazil, Europe and … …American Journal of Environmental Sciences, Vol. 9, Issue 2 · 25 Apr 2013 · 7,441 accessesView PDFCite
Research ArticleOpen accessIn the abstractDetermination of Atmospheric Turbidity and its Correlation with Climatologically ParametersU. Ali Rahoma, A. H. HassanStudy of Atmospheric turbidity is important for purposes of meteorology, ecology, climatology and monitoring of atmospheric pollution. Linke Turbidity factor (LT) is commonly used to model the attenuation of solar radiation in the atmosphere. The probable dependence on the water vapor content of the relationship linking LT to Angstrom’s turbidity coefficient B, is discussed. In this study, a procedure for … …American Journal of Environmental Sciences, Vol. 8, Issue 6 · 28 Dec 2012 · 6,986 accessesView PDFCite