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65 results for “Scanning Electron Microscopy”
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Research ArticleOpen accessIn the abstractOptoelectronic Characterisation of Silicon and CIGS Photovoltaic Solar CellsRicardo A. Marques Lameirinhas, Afonso Ravasco, Catarina Pinho Correia Valério Bernardo, João Paulo N. TorresThroughout these years, many materials have been subjected to tests and experiments, creating several photovoltaic technologies and generations. In this article, some of these generations are compared, namely silicon and Copper Indium Gallium di-Selenide (CIGS), in order to characterize both materials in an optoelectronic way. Using a 2D solar cell PIN model using COMSOL software, both materials are tested, obtaining … …American Journal of Engineering and Applied Sciences, Vol. 17, Issue 1 · 30 Jan 2024 · 4,976 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparative Study of Properties of Biopolymers from Corn Starch with Addition of Microalgae Spirulina platensisJúllia Koury Abreu, Loraynne Coelho Pereira, José Izaquiel Santos da SilvaThe discovery of the environmental impacts caused by petroleum-based polymers has led to the use of natural polymers gaining more and more space. Naturally occurring polymers, also known as biopolymers, are chemical compounds produced by living things or raw materials from renewable energy sources. Their main advantage is decomposition, while polymers from fossil and non-renewable energies can take hundreds of … …American Journal of Engineering and Applied Sciences, Vol. 16, Issue 1 · 16 Mar 2023 · 6,026 accessesView PDFCite
Research ArticleOpen accessIn the abstractGreen Synthesis of Silver Nanoparticles using Extract of Disporopsis Longifolia for Photocatalytic Degradation of Methylene BlueKhieu Thi Tam, Dang Van Thanh, Huu Tap Van et al.In this report, the silver Nanoparticles (AgNPs)were successfully synthesized in a simple one-pot method by the leaf and stemextract of Disporopsis longifolia as reducing, capping agents, andstabilizers for the first time. The optimal extract amount, AgNO3concentration, reaction temperature, and time for the AgNPs synthesis wereidentified using Ultraviolet-Visible (UV-Vis) spectroscopy. X-Ray Diffraction (XRD)and Scanning Electron Microscopy (SEM) were used to characterize … …American Journal of Environmental Sciences, Vol. 18, Issue 5 · 23 Nov 2022 · 6,563 accessesView PDFCite
Research ArticleOpen accessIn the abstractUse of Response Surface Methodology for Optimization of Nickel Adsorption in an Aqueous Solution by ClayNesrine Turki, Nesrine Boujelben, Zaineb Bakari, Jalel BouzidIn this study, Scanning Electron Microscopy (SEM), X-ray diffraction and BET surface area (SBET) methods were employed to characterize the adsorbent. Response Surface Methodology (RSM) was consider as a good method to assess Ni adsorption treatment and Box-Behnken design was used to examine simultaneous the effects of different experimental variables (pH, adsorbent dosage, contact time). Experimental results showed high adsorption … …American Journal of Environmental Sciences, Vol. 17, Issue 5 · 24 Nov 2021 · 6,292 accessesView PDFCite
Research ArticleOpen accessIn the abstractProtective Role of Chichorium intybus Extract Against Renal Toxicity Induced by Magnetite Silver Nanoparticles in Male RatsDoha M. Beltagy, Ehab Tousson, Nabiha I Abdo, Batoul M. IzzularabMagnetite silver nanoparticles (Fe3O4/AgNPs) symbolize a new candidate in several industrial and biological products for their activities, simple preparation and low synthesis costs. Many studies recommended the usage of Fe3O4/AgNPs to overcome lacking biocompatibility of AgNPs inside the body. However, Fe3O4/AgNPs also has toxic effects on kidney tissues. In this study, AgNPs was synthesized on the surface of magnetic nanoparticles … …OnLine Journal of Biological Sciences, Vol. 21, Issue 3 · 15 Sep 2021 · 6,318 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization of a Multi-Metal Resistant Bacillus cereus Strain TWSL_5 and it’s Bioremediation Potential for Cr, Pb, Zn and FeWeerasingha Mudiyanselage Nilmini Hasintha Kumari, Naduviladath Vishvanath Chandrasekharan, Champika Dilrukshi WijayarathnaAn effluent sample collected from a textile dyeing factory was screened to isolate metal resistant endogenous bacteria using standard microbiology techniques. A bacterium with the highest metal resistance was characterized by 16S rRNA gene sequencing and the bacterial genome was screened for any possible metal resistant genes using the Polymerase Chain Reaction (PCR). The bioremoval ability of the isolate was … …American Journal of Environmental Sciences, Vol. 17, Issue 3 · 15 Jul 2021 · 6,443 accessesView PDFCite
Research ArticleOpen accessIn the abstractProduction of Al based Composites Reinforced with FeAl Intermetallic Particles by Mechanical AlloyingSergio Rubèn Gonzaga Segura, Arturo Molina Ocampo, Renè Guardián Tapia, Alejandro Sedano AguilarIn this research project, Al matrix composite materials reinforced with 5 and 10 (wt. %) of FeAl intermetallic particles were synthesized by Mechanical Alloying (MA) at a speed of 250 RPM for 2, 5, 10 and 15 h of milling time. The results showed that composite materials can be obtained at low energy conditions with improved dispersion of the reinforcement … …American Journal of Applied Sciences, Vol. 18, Issue 1 · 24 Mar 2021 · 6,886 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Fibre Content on Compressive and Flexural Properties of Coconut Fibre Reinforced Epoxy CompositesJasem G. Alotaibi, Ayedh Eid Alajmi, Belal F. Yousif, Nbhan D. SalihCoconut fibre reinforced polymer composites are gaining popularity in the field of engineering due to the many benefits that come with them such as low cost of production, easy fabrication, enhanced strength compared to other polymer composites. Of late, there has been an increase in the use of composites that are naturally based because they have many benefits. In line … …American Journal of Applied Sciences, Vol. 17, Issue 1 · 20 Jun 2020 · 8,031 accessesView PDFCite
Research ArticleOpen accessIn the abstractThermoelectric and Optical Properties of Advanced Thermoelectric Devices from Different Multilayer Thin FilmsMebougna Drabo, Satilmis BudakThermoelectric devices were prepared using different multilayered thin film structures in the order of Ge/Si+Ge, Si+Ge, Si, Sb+Ge, Ge and SiO2/SiO2+Ge by DC/RF Magnetron Sputtering. The thickness of the deposited thin films were measured using Filmetrics UV thickness measurement system. The prepared thermoelectric devices have been modified with 5 MeV Si ions bombardments at the different fluences (doses) using Pelletron … …American Journal of Applied Sciences, Vol. 16, Issue 8 · 29 Aug 2019 · 8,113 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimization, Characterization and Antioxidant Activities of Selenized Polysaccharides from Hypsizygus marmoreusTing Liu, Xue Jiang, Wei Wang, Bing XuIn this study, hypsizygus marmoreus was used as raw material to extract polysaccharides by hot water extraction method. Preparation technology of Selenized Polysaccharides from Hypsizygus marmoreus (SPHM) and its antioxidant activities were investigated. Chelation rate was selected as the index, effects of initial concentration of sodium selenite (mg/mL), the mass ratio of polysaccharide to sodium selenite, chelation time and pH … …American Journal of Biochemistry and Biotechnology, Vol. 15, Issue 3 · 8 Aug 2019 · 7,774 accessesView PDFCite