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61 articles for “Stabilization”

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Research ArticleOpen accessIn the abstractInfluence of Cement Chemistry on the Performance of Cement Stabilized Tropical Lateritic SoilOdumade Adegboyega Oduniyi, Ezeah Chukwunonye, Charles Nnamdi Ezugwu, Ekeoma EmmanuelChemical composition affects overall performance of cement on other materials such as when used in concrete or for stabilization of lateritic soil. This research studied the influence of chemical composition of three Portland cement types represented as samples A, B and C on engineering performance when mixed with laterite under tropical environmental conditions.The Lateritic soil sample classified according to AASHTO … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 21 May 2018 · 8,804 accessesView PDFCite
Research ArticleOpen accessIn the abstractCyclic Instability of Shape-Memory Alloys in Seismic Isolation SystemsFilipe Amarante dos Santos, Corneliu Cismasiu, Francisco Braz FernandesShape-memory alloys are being progressively introduced as kernel components in seismic retrofitting devices for civil engineering structures. In order to control the instability associated with the first mechanical cycles, a training procedure is usually implemented, which stabilizes the superelastic behavior of the alloy. This paper addresses the characterization of the cyclic behavior of an austenitic NiTi alloy with emphasis on … …International Journal of Structural Glass and Advanced Materials Research, Vol. 2, Issue 1 · 7 Jan 2018 · 6,854 accessesView PDFCite
Research ArticleOpen accessIn the abstractStabilized Controller Design for Attitude and Altitude Controlling of Quad-Rotor Under Disturbance and Noisy ConditionsM. Hassan Tanveer, S. Faiz Ahmed, D. Hazry et al.This article presents a control approach to obtain the better stabilization in attitude and altitude of quad-rotor under different disturbance conditions. In the standard Quad-rotor rotor type UAV, controlling of attitude and altitude is one of the most critical tasks and appropriate controller for stabilization of UAV is essential and necessary. These two controls under various conditions of disturbances was … …American Journal of Applied Sciences, Vol. 10, Issue 8 · 24 Jul 2013 · 8,524 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization, Concentrations and Emission Rates of Volatile Organic Compounds from Two Major Landfill Sites in KuwaitMohammad AlAhmad, Marwan Dimashki, Abdallah Nassour, Michael NellesProblem statement: The emission of pollutants from landfill sites in Kuwait is of major concern due to the associated adverse environmental and health impacts. There are 18 landfill sites in Kuwait which are contributing to the emission of atmospheric pollutants including; methane, carbon dioxide and Volatile Organic Compounds (VOCs). Approach: Determine the concentration and composition of VOCs in LFG emissions … …American Journal of Environmental Sciences, Vol. 8, Issue 1 · 17 Feb 2012 · 7,976 accessesView PDFCite
Research ArticleOpen accessIn the abstractRadiographic Evaluations of the Tetra-Calcium Phosphate and Diacalcium Phosphate with Bone Plate in Osseo-Integration of Bone Repair in RabbitDavood Sharifi, Sarang Soroori, Saeed Hasaraki, Nazanin JafariProblem statement: To determine the effect of the Tetra calcium phosphate and Diacalcium phosphate cement in comparison with bone plate in fracture repair in rabbit. Experimental in vivo study. A total of 18 adult male White New Zealand rabbits, weighing 3.0±0.250 Kg and about 6 months old were used. They were fasted 4 h before start of experiment and were … …American Journal of Animal and Veterinary Sciences, Vol. 4, Issue 4 · 31 Dec 2009 · 7,230 accessesView PDFCite
Research ArticleOpen accessIn the abstractIntelligent Control for Self-erecting Inverted Pendulum Via Adaptive Neuro-fuzzy Inference SystemA. A. Saifizul, Z. Zainon, N. A.Abu Osman et al.A self-erecting single inverted pendulum (SESIP) is one of typical nonlinear systems. The control scheme running the SESIP consists of two main control loops. Namely, these control loops are swing-up controller and stabilization controller. A swing-up controller of an inverted pendulum system must actuate the pendulum from the stable position. While a stabilization controller must stand the pendulum in the … …American Journal of Applied Sciences, Vol. 3, Issue 4 · 30 Apr 2006 · 7,322 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation the Anaerobic Digestion Performance of Organic Waste from a Landfill in MoroccoFatima Ebich, Rajae Ramdan, Azzouz EssamriOrganic household waste has a high organic content (69 g/kg), value of pH equal to 6,3 with 94% of moisture. Anaerobic digestion is one of the technologies for recycling and stabilization of organic waste, the process is carried out in 3L reactor at semi continuous and mesophelic conditions. During the anaerobic digestion of OHW, pH was around neutrality (between 6,5 … …American Journal of Environmental Sciences, Vol. 13, Issue 5 · 5 Oct 2017 · 7,998 accessesView PDFCite
Research ArticleOpen accessIn the abstractLong-Term Characterization of Landfill Leachate: Impacts of the Tropical Climate on its CompositionJorge Luiz da Paixão Filho, Miriam Gonçalves MiguelThe disposal of Municipal Solid Waste (MSW) in sanitary landfills produces leachate, whose composition changes depending on the microbial community and the environmental conditions. However, these changes cannot be observed in sanitary landfill because of the superposition of cells, which makes it difficult to determinate the relationship among the phases of biodegradation of MSW, the composition of the leachate and … …American Journal of Environmental Sciences, Vol. 13, Issue 2 · 14 Mar 2017 · 8,573 accessesView PDFCite
Research ArticleOpen accessIn the abstractFeedback Control of Quad-Rotors with a Matlab-Based SimulatorStephen Armah, Sun Yi, Wonchang Choi, Dongchul ShinPrecise regulation of position and attitude (roll, pitch and yaw) is one of the most critical tasks to be considered in designing controllers for quadrotor types of Unmanned Aerial Vehicles (UAVs). The MATLAB-based simulator for quadrotors using PD-feedback control to achieve stabilization was developed. MATLAB/Simulink models are used to design and validate the control algorithms and the simulation results are … …American Journal of Applied Sciences, Vol. 13, Issue 6 · 23 Jun 2016 · 7,865 accessesView PDFCite
Research ArticleOpen accessIn the abstractIsolation and Identification of Staphylococcus epidermidis S14 Screening Extracellular Antimicrobial MetabolitesJie Zhang, Han Jiang, Jiaxin Jiang, Guangrong HuangTotal 24 isolates with antimicrobial activity against Staphylococcus aureus, Escherichia coli, Bacillus cereus and Shigella castellani, out of 259 strains, were isolated from the internal of seven marine fishes. The extracellular metabolites of strain S14, isolated from the internal of shark, showed stronger inhibition against the four tested bacteria, including G- and G+ bacteria. Based on the 16S rDNA the … …American Journal of Biochemistry and Biotechnology, Vol. 12, Issue 1 · 19 Mar 2016 · 7,567 accessesView PDFCite