Volume 13, Issue 4 (2020) | American Journal of Engineering and Applied Sciences

Validation of Tools for 6Dof Orbital Dynamics Simulation

Mariana Poderico — 2020-10-05

American Journal of Engineering and Applied Sciences, Published online: 5 October 2020; doi:10.3844/ajeassp.2020.602.609

This paper describes the validation activities of the 6Dof Orbital-Sim tool developed by Italian Aerospace Research Centre (CIRA). These activities had the goal of defining, implementing and executing...

Fire Evaluation of RC Frames Strengthened with FRPs Using Finite Element Method

Reza Salehi — 2020-10-05

American Journal of Engineering and Applied Sciences, Published online: 5 October 2020; doi:10.3844/ajeassp.2020.610.626

Reinforced Concrete (RC) structures may confront with extreme loading conditions. Sometimes, structures are not only under extreme loading such as earthquakes but also, they may be subjected to fire. ...

Predicting the Remaining Lifetime of Distribution Transformers using Machine Learning

Ntiminity Abontakoyah Enoch — 2021-01-01

American Journal of Engineering and Applied Sciences, Published online: 1 January 2021; doi:10.3844/ajeassp.2020.627.638

Distribution Transformer is a crucial element in deciding the power flow in large power systems. Their better performance implies high power system efficiency and enhanced power transfer capability. H...

A Multifactor Authentication Framework for the National Health Insurance Scheme in Ghana using Machine Learning

Isaac Kofi Nti — 2020-10-29

American Journal of Engineering and Applied Sciences, Published online: 29 October 2020; doi:10.3844/ajeassp.2020.639.648

The creation of the National Health Insurance Scheme (NHIS) in 2005 to replace the traditional “cash and carry” healthcare financial model, was anticipated to offer a safe, reliable, affordable an...

Validation of Tools for 3Dof Orbital Dynamics Simulation

Mariana Poderico — 2020-11-02

American Journal of Engineering and Applied Sciences, Published online: 2 November 2020; doi:10.3844/ajeassp.2020.649.657

This paper describes the validation activities of the 3Dof Orbital- Sim tool developed by Italian Aerospace Research Centre (CIRA) and capable of simulating the orbital flight dynamics of a generic sp...

RETRACTED: Existence and Non-Existence of Super Mean Labeling on Star Graphs

G. Uma Maheswari — 2020-11-13

American Journal of Engineering and Applied Sciences, Published online: 13 November 2020; doi:10.3844/ajeassp.2020.658.667

Thermal Treatment Effects on the Thermoelectric Properties of Ni/Si/Si + Sb/Si/Si + Ge/Ni Multilayer Thin Films

Satilmis Budak — 2020-11-14

American Journal of Engineering and Applied Sciences, Published online: 14 November 2020; doi:10.3844/ajeassp.2020.668.682

The multilayer thermoelectric devices including Ni/200 layers of Si/Si + Sb/200 layers of Si/Si + Ge/Ni thin films were fabricated using electron beam and DC/RF magnetron sputtering deposition systems...

Geochemical and Petrology Properties of Zafarghand Index and Kahang Deposit of Porphyry Copper-Molybdenum

Mohsen Dehghanipoodeh — 2020-11-19

American Journal of Engineering and Applied Sciences, Published online: 19 November 2020; doi:10.3844/ajeassp.2020.683.698

The probability of the occurrence of porphyry copper ore associated with subduction zone of the Neo-Tethys ocean and volcanic arc of Iran (Urumieh-Dokhtar) justifies the necessity of exploration and p...

New Insights into the Pre-Concentration of Alunite from a Siliceous ore using Froth Flotation

Fahimeh Dehghani — 2020-12-20

American Journal of Engineering and Applied Sciences, Published online: 20 December 2020; doi:10.3844/ajeassp.2020.699.706

Alunite is the main non-bauxite source of aluminum. Due to the low Degrees Of Freedom (DOF) of alunite, froth flotation, as a pre-concentration method, is a viable alternative to increase selectivity ...

Using Linear Chouquet Integral Algorithm to Design Optimal Time-Cost Model in Large Construction Projects

Hamid Jafari Nia — 2020-11-18

American Journal of Engineering and Applied Sciences, Published online: 18 November 2020; doi:10.3844/ajeassp.2020.707.716

Nowadays, the problem of scheduling and executing projects with the least cost and time has become one of the main concerns of project managers. In this regard, researchers have used different methods...

Phytoremediation and Adsorption of Heavy Industry Emitted from Cement Industry through Plant Leaves, Case Study: Golestan Peivand Cement Factory

Soleyman Ghorbanzadeh — 2020-11-23

American Journal of Engineering and Applied Sciences, Published online: 23 November 2020; doi:10.3844/ajeassp.2020.717.724

Cement factories are found to be one of the major causes of pollution. Cement mist and dusts depositions affect the photosynthesis, secretion and fertility of the plant. Increasing the concentration o...

Numerical Study of Static and Dynamic Instabilities of Pinned-Pinned Pipe under Different Parameters

Dahmane Mouloud — 2020-11-21

American Journal of Engineering and Applied Sciences, Published online: 21 November 2020; doi:10.3844/ajeassp.2020.725.735

In this study, the natural frequencies of the pipe transporting an fluid resting on an elastic Winkler-type and the critical velocities of instabilities are obtained by the standard finite element met...

Numerical Study of Static Instability of Pipe Conveying Incompressible Fluid under Different Boundary Conditions

Dahmane Mouloud — 2020-11-26

American Journal of Engineering and Applied Sciences, Published online: 26 November 2020; doi:10.3844/ajeassp.2020.736.747

In this article, the influences of uniform velocity profile, mass ratio, length and Winkler elastic foundation on the static instability of pipe conveying incompressible fluid are investigated. The Eu...

Recovery of Manganese from Zinc Smelter Slag

Rasoul Khosravi — 2020-12-01

American Journal of Engineering and Applied Sciences, Published online: 1 December 2020; doi:10.3844/ajeassp.2020.748.758

Using a software-based experiment design, the application of the leaching process for the extraction of manganese from Zinc Plant Slag (ZPS) was investigated. In this study, the effect of different pa...

Using Regression Analysis to Predict the Demand Function of Electricity: A Case Study

Hasan Karimian Khozani — 2020-12-20

American Journal of Engineering and Applied Sciences, Published online: 20 December 2020; doi:10.3844/ajeassp.2020.759.767

Due to the growing electricity consumption in Iran, investigating the changes of the electricity demand is one of the fundamental challenges facing many professionals and planners. The planners always...

Some Aircraft Considered New in 2020

Florian Ion Tiberiu Petrescu — 2020-12-22

American Journal of Engineering and Applied Sciences, Published online: 22 December 2020; doi:10.3844/ajeassp.2020.768.802

The paper briefly presents some models of aircraft considered avant-garde in 2020 and it is part of the reviews on news in aviation and aerospace. It briefly presents some basic features, news and mor...

Comparative Study of Two Reactive Routing Protocols with Realistic Mobility Model

John Tengviel — 2020-12-21

American Journal of Engineering and Applied Sciences, Published online: 21 December 2020; doi:10.3844/ajeassp.2020.803.818

A Mobile Ad-hoc Networks (MANETs) are dynamic wireless networks that can be formed without the need for any existing infrastructure in which each node can act as a host as well as a router. One of the...

Disinfection of Water using Supported Titanium Dioxide Photocatalysts

Shamkumar Pandurang Deshmukh — 2020-12-28

American Journal of Engineering and Applied Sciences, Published online: 28 December 2020; doi:10.3844/ajeassp.2020.819.826

TiO2 based photocatalyst has potential material for disinfection of harmful pathogens as well as removal of organic compounds. The formation of reactive oxygen species is a key part for overall proces...

The Application of Numerical Taxonomy Technique in the Iron Ore Flotation to Determine Appropriate pH and Particle Size Distribution

Rasoul Khosravi — 2020-12-24

American Journal of Engineering and Applied Sciences, Published online: 24 December 2020; doi:10.3844/ajeassp.2020.827.836

The numerical taxonomic technique is one of the multivariate decision-making techniques for assessment and ranking. It is widely used for planning and development studies. In this research, flotation ...

Solving the Robust Design Problem for a Two-Commodity Flow Network with Node Failure

Noha Hamdy Radwan — 2020-12-28

American Journal of Engineering and Applied Sciences, Published online: 28 December 2020; doi:10.3844/ajeassp.2020.837.845

The robust design in a flow network is one of the most important problems. It is defined as searching the optimal capacity that can be assigned to the nodes such that the network still survived even u...

Investigation of Climatological Components on Runoff Modeling using SWAT

Hamid-Reza Rabiefar — 2020-12-30

American Journal of Engineering and Applied Sciences, Published online: 30 December 2020; doi:10.3844/ajeassp.2020.846.857

It was planned most hydraulic projects, for instance barriers, it was defined the overflow of the rivers. If the river absences any position to measure the yield, the hydraulic models can be utilized ...

Assessment of Heavy Metal Cu, Pb, Cd Contamination in Dust in Zahedan City using Pollution Indices and GIS and Geo Statistics Technologies, Zahedan, Iran

Kaveh Ostad-Ali-Askari — 2020-12-30

American Journal of Engineering and Applied Sciences, Published online: 30 December 2020; doi:10.3844/ajeassp.2020.858.867

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 ma...