Browsing Engineering by Title
Now showing items 1338-1357 of 1403
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Ultrasonic-assisted lignocellulose pretreatment of amaranth stem for bioethanol production
(North-West University, Potchefstroom Campus, 2016)The depletion of fossil fuels, increasing energy demands in the world, and the effects associated with global warming has led to a search for alternative energy forms that are renewable such as bioethanol. Bioethanol ... -
Uncertainty analysis of the fuel compact of the prismatic high temperature gas-cooled reactor test problem using SCALE6.1
(North-West University (South Africa) , Potchefstroom Campus, 2016)The IAEA CRP UAM on HTGRs has established international activities grouped into phases for the evaluation of HTGRs through sensitivity and uncertainty assessments. The assessments range from Reactor physics, Thermal-hydraulics ... -
Uncertainty analysis of the PBMR turbo machines
(North-West University, 2005)The aim of this study was to quantify the amount of uncertainty that surrounds the design of the PBMR turbo machines. The PBMR plant is a first-of-a-kind engineering effort in which a closed loop intercooled Brayton cycle ... -
Uncertainty and sensitivity analysis of a materials test reactor
(2013)This study was based on the uncertainty and sensitivity analysis of a generic 10 MW Materials Test Reactor (MTR). In this study an uncertainty and sensitivity analysis methodology called code scaling applicability and ... -
Uncertainty and sensitivity analysis of aspects of the neutronics of a prismatic block-type HTGR
(2019)The International Atomic Energy Agency (IAEA) Coordinated Research Project (CRP) on High Temperature Gas-cooled Reactors (HTGR) Uncertainty Analysis in Modelling (UAM) has been established aiming to study uncertainty ... -
Understanding customer preferences: comparing additive manufacturing powders (PA2200 & PA2221) in a South African context
(North-West University (South Africa), 2020)This study aims to determine the properties of polymer powders for laser sintering (LS) which are most desirable from a customer perspective. With multiple options of imported material being available, it is possible to ... -
A unique energy–efficiency–investment–decision–model for energy services companies
(2008)To remain competitive in an environment with limited natural resources and ever-increasing operational costs, energy efficiency cannot be ignored. From this perspective the need for Energy Service Companies (ESCos) has ... -
A unique facility to test the infectivity of human-generated airborne infections
(North-West University, 2006)Tuberculosis (TB), one of the world's greatest killers, is predominantly spread by the airborne route. Drug-resistant M. tuberculosis has emerged as a global public health threat despite effective drugs and disease control ... -
Upscaling of a sulphur dioxide depolarized electrolyzer
(North-West University, 2012)In the last couple of years there has been a great need for finding alternative, cleaner burning fuel sources. This search has led to the development of various hydrogen technologies. The reason for this is that when burnt, ... -
Usability study of word processing applications on different mobile devices
(North-West University (South Africa), 2020)Educators and learners are making more use of technology in education, however, personal computers (PC’s) are still expensive, and many developing countries do not have the resources to implement computer systems in ... -
A usable, real-time interpreter for rapid product development
(North-West University, 2010)The need for a usable programmable logic controller (PLC) was identified. This need originated from the shortfalls in flexibility and limited functionality of existing industrial-type PLCs. In order to address these ... -
The use and effectiveness of project management methodologies in mobile application development
(2015)This study aims to fill the gap in managing mobile applications with certain project management methodologies (PMM) by looking at different kinds of PMMs and comparing them to characteristics of mobile applications. To ... -
The use and effectiveness of project management methodologies in virtual and distributed projects
(2014)Problem statement: Virtual and distributed projects are now fast replacing collocated projects as they bring up more skills needed for projects. There are various problems that have been encountered while working on virtual ... -
The use and effectiveness of system development methodologies in mobile application development
(North-West University (South Africa) , Potchefstroom Campus, 2015)System development methodologies (SDMs) have been in use since 1970 (Avison & Fitzgerald, 2006). Mobile application development is a new direction in system development. Organizations need high quality mobile applications ... -
Use of amaranth as feedstock for bio-ethanol production
(2014)The depletion of fossil fuel reserves and global warming are the two main factors contributing to the current demand in clean and renewable energy resources. Biofuels are renewable energy resources and have an advantage ... -
The use of chitosan beads for the adsorption and regeneration of heavy metals
(North-West University, 2007)This work studied the removal of heavy metals from wastewater through the use of South African chitosan beads produced from locally available raw materials. For this purpose, chitosan beads were prepared from chitosan ... -
The use of crosslinked polyethylene for the manufacturing of membranes
(Potchefstroom University for Christian Higher Education, 1999)Increasing environmental awareness over the past decade as well as stringent environmental laws forced all factories to invest in water treatment processes for effluent treatment before discharge or re-use. Most of these ... -
The use of neural networks to determine the long-term impact of demand side management
(North-West University, 2003)Eskom, South Africa national electricity provider, estimates that in the year 2006 South Africa will experience a capacity shortage. One way to address this problem is through the implementation of Demand-Side Management ... -
The use of supercapacitors in conjunction with batteries in industrial auxiliary DC power systems
(2015)Control and monitoring networks often operate on AC/DC power systems. DC batteries and chargers are commonly used on industrial plants as auxiliary DC power systems for these control and monitoring networks. The energy ... -
The use of systems development methodologies in the development of e-government systems
(2014)The development of e-government systems in South Africa has raised major concerns when coming to the systems development methodology used. Through the literature review conducted and the data collected, the study has ...