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Articles 1 - 8 of 8
Full-Text Articles in Engineering Science and Materials
Friction Stir Welding On Aluminum Alloy 6063 Pipe, Azman Ismail, Mokhtar Awang, Hasan Fawad, Kamal Ahmad
Friction Stir Welding On Aluminum Alloy 6063 Pipe, Azman Ismail, Mokhtar Awang, Hasan Fawad, Kamal Ahmad
Azman Ismail
For Friction Stir Welding (FSW) process, a substantial amount of research done on aluminium plate but very few are found for aluminium pipe due to its tubular shape. A specially customised Orbital Clamping Unit (OCU) was used and fixed on the Bridgeport 2216 CNC milling machine in order to run the FSW on aluminium alloy 6063 pipe butt joint at several welding parameters. This OCU will hold these pipes together tightly, rotate these pipes at the required constant low speed, and ensure easy removal of pipe after the welding process before proceeding for further testing. This paper will study the …
Is It Time To Dump Your Vendor Management System?, Rihaz Z. Chughatta
Is It Time To Dump Your Vendor Management System?, Rihaz Z. Chughatta
Rihaz Z Chughatta
Most companies today have either implemented, or are exploring, some form of a Vendor Management System (VMS) to consolidate their external suppliers. Companies that sell a VMS point out that this system allows a Customer to get the most cost-effective solution for their needs within a certain category of suppliers; the “when suppliers compete, you win” mentality prevails. Some of the VMS even have performance metrics by which suppliers are measured and then rated in the system; thus making the case that not only does a VMS provide the most cost-effective, but also the best performing and most efficient solution …
Travelling In Cuba, Fathi Habashi
Travelling In Cuba, Fathi Habashi
Fathi Habashi
Contact with Cuban scientists was established in 1986 when two researchers from Centro de Investigaciones para Industria Minero Metalurgica in Havana visited Laval University to get acquainted with research activities in the area of extractive metallurgy. This was followed in early 1987 by two more researchers from the same centre. Invitations were then received in late 1987, 1989, and 2008 to visit the nickel refineries in Cuba and to hold seminars at the University of Havana. The present report outlines these activities.
Optimization Of Pyrolysis Conditions And Adsorption Properties Of Bone Char For Fluoride Removal From Water, Karina Rojas-Mayorga, Adrian Bonilla-Petriciolet, Ismael A. Aguayo-Villarreal, Virginia Hernandez-Montoya, Ma. Del Rosario Moreno-Virgen, Rigoberto Tovar-Gomez, Miguel A. Montes-Moran
Optimization Of Pyrolysis Conditions And Adsorption Properties Of Bone Char For Fluoride Removal From Water, Karina Rojas-Mayorga, Adrian Bonilla-Petriciolet, Ismael A. Aguayo-Villarreal, Virginia Hernandez-Montoya, Ma. Del Rosario Moreno-Virgen, Rigoberto Tovar-Gomez, Miguel A. Montes-Moran
Adrian Bonilla-Petriciolet
This study reports the optimization of pyrolysis process for the synthesis of bone char for fluoride removal from water. Specifically, we have performed a detailed analysis of the adsorption properties of bone char samples obtained at different operating conditions of pyrolysis. Results show that the pyrolysis temperature plays a major role to synthetize an effective bone char for water defluoridation. In particular, a pyrolysis temperature higher than 700 °C may cause the dehydroxylation of the hydroxyapatite of bone char affecting its fluoride adsorption capacities. The best adsorption properties of bone char for fluoride removal are obtained with those samples synthetized …
An Artificial Immune Algorithm For Minimizing Total Cost Of Resources In The Resource Constrained Project Scheduling Problem, Ramin Golestaneh, Azizollah Jafari
An Artificial Immune Algorithm For Minimizing Total Cost Of Resources In The Resource Constrained Project Scheduling Problem, Ramin Golestaneh, Azizollah Jafari
university of science & culture
Abstract— In this article, an Artificial Immune Algorithm (AIA) for minimizing total costs of both renewable and non-renewable resources in the Resource-Constrained Project Scheduling Problem (RCPSP) is presented. We assume renewable resources that are limited in number, are restricted to very expensive equipment and machines, therefore they are rented and used in other projects, and are not available in all project periods. In other words, there is a predefined ready date as well as a due date for each renewable resource type, so that no resource is used before its ready date. However, resources are permitted to be used after …
Mechaniczny Rozdział Faz Proj., Wojciech M. Budzianowski
Mechaniczny Rozdział Faz Proj., Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Challenges And Prospects Of Processes Utilising Carbonic Anhydrase For Co2 Separation, Patrycja Szeligiewicz, Wojciech M. Budzianowski
Challenges And Prospects Of Processes Utilising Carbonic Anhydrase For Co2 Separation, Patrycja Szeligiewicz, Wojciech M. Budzianowski
Wojciech Budzianowski
This article provides an analysis of processes for separation CO2 by using carbonic anhydrase enzyme with particular emphasis on reactive-membrane solutions. Three available processes are characterised. Main challenges and prospects are given. It is found that in view of numerous challenges practical applications of these processes will be difficult in near future. Further research is therefore needed for improving existing processes through finding methods for eliminating their main drawbacks such as short lifetime of carbonic anhydrase or low resistance of reactive membrane systems to impurities contained in flue gases from power plants.
Breaking The Theft-Chain-Cycle: Property Marking As A Defensive Tool, William J. Bailey, David J. Brooks
Breaking The Theft-Chain-Cycle: Property Marking As A Defensive Tool, William J. Bailey, David J. Brooks
Bill Bailey
The theft of property and its associated impact effects many parts of society. For example, a considerable amount of resources are expended in trying to reduce property theft, as such crime engenders both a financial and emotional impact (Grabosky, 1995, p. 1) on those involved. Factors such as fear of crime, increased insurance premiums and victimization are all outcomes of property crime. Much of the past research has focused on the mitigation of such crimes, collectively termed as ‘crime prevention’. Crime prevention are “any actions designed to reduce the actual level of crime and/or the perceived crime” (S.P. Lab, 2010, …