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Journal Cover   Journal of Engineering and Technology Research
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  This is an Open Access Journal Open Access journal
   ISSN (Print) 2006-9790
   Published by Academic Journals Homepage  [73 journals]
  • Wastewater discharge impact on groundwater quality of Béchar City,
           Southwestern Algeria: Approach by microbiological analysis and health risk
           index evaluation

    • Abstract: This manuscript studies the problem of the wastewater influence on groundwater chemistry, particularly the microbiological quality setting and risk to public health in an urban environment, in an arid climate. The study of the spatial and temporal variation in the chemical and microbiological composition of Bchar city groundwater identifies the impact intensity that directly affects its qual...
      PubDate: Tue, 31 Mar 2015 00:00:00 +010
       
  • Hybrid diagnosing techniques for analyzing dissolved gases in power
           transformers

    • Abstract: Safe operation of elements of power systems plays a crucial role in maintaining the reliability and safety of the system. Transformers being a key element in power systems need to be maintained and monitored on a regular basis. Dissolved gas analysis has been used as a reliable tool in maintaining the safe operation of transformers for a long time. Analysis of dissolved gases is analytical a...
      PubDate: Sat, 28 Feb 2015 00:00:00 +010
       
  • Characterization and determination of catechins in green tea leaves using
           UV-visible spectrometer

    • Abstract: In this paper, characterizations of pure major catechins and method for determination of total catechins in green tea leaves have been reported using UV-visible spectrometer. Most research activities have been focused on chromatographic methods, however spectrophotometirc method is preferred because of its rapidity, high accuracy, and reproducibility. The optical transition properties of Epi...
      PubDate: Sat, 31 Jan 2015 00:00:00 +010
       
  • Analysis of differences in internet user experiences and virtual network
           activities in Taiwan

    • Abstract: Considered a crucial industrial development in the 21st century, the Internet has had a marked effect in shaping modern society. The ongoing development of handheld mobile Internet devices has enabled services in the virtual world to be updated constantly, thereby providing numerous options regarding the virtual network interactions and activities of Internet users. Among the various virtual...
      PubDate: Sat, 31 Jan 2015 00:00:00 +010
       
  • Effect of oxygen plasma treatments on the structural and optical
           properties of polyimide films

    • Abstract: A detailed study of some physical properties of Polyimide films after exposing them to oxygen plasma is presented. The structure of the sample has been analyzed by X-ray diffraction technique (XRD) and is found to be semi crystalline. Thermogravimetric Analysis (TGA) studies revealed that the thermal stability of polyimide films have improved after being exposed to oxygen plasma, at differen...
      PubDate: Sat, 31 Jan 2015 00:00:00 +010
       
  • PSO-ANN’s based suspended sediment concentration in Ksob basin,
           Algeria

    • Abstract: Suspended sediment concentration estimation has a major influence on river basin planning and management. Prediction of such parameter with artificial neural network (ANN) has shown its performance, because of this, Back Propagation Neural Network model trained with particle swarm optimization (PSO) is used to forecast the daily sediment concentration for Ksob river, Tebessa using 22 years d...
      PubDate: Sun, 28 Dec 2014 00:00:00 +010
       
  • Relocation of source of sporadic production using genetic algorithm in
           distribution network

    • Abstract: Today, due to the development of distribution systems and increase of demand and load, the use of the source of scattered production has developed. The establishment of the installation place and the size of the source of scattered production decrease network loss, lead to best action of network as well as the recovery of the voltage profile. In this article, we use the genetic algorithm for...
      PubDate: Sun, 28 Dec 2014 00:00:00 +010
       
  • Geothermal Energy

    • Abstract: The term Geothermal originates from two Greek words GEO and THERM. The Greek word geo means the earth whilst their word for therm means heat from the earth. Geothermal energy is energy derived from the heat of the earth. The earths centre is a distance of approximately 4000 miles and is so hot that it is molten. Temperatures are understood to be at least 5000C. Heat from the centre of the ea...
      PubDate: Sun, 28 Dec 2014 00:00:00 +010
       
  • New technique based on uterine electromyography nonlinearity for preterm
           delivery detection

    • Abstract: Detecting uterine electromyography (EMG) signals can yield a promising approach to determine and take actions to prevent preterm deliveries. This paper objective is to predict this risk using such uterine signals. Previous classification studies have used only linear signal processing which depends on the spectral characteristics of the uterine EMG signals that did not give clinically accept...
      PubDate: Mon, 03 Nov 2014 00:00:00 +010
       
  • Analysis and parametric optimization of flux cored arc welding process for
           IS 2062 mild steel plates using Taguchi method and utility concept

    • Abstract: Optimization of flux cored arc welding (FCAW) process parameters were carried out to obtain optimum weld bead geometry in mild steel plates of IS 2062 by using an alternate Taguchi method. Design of experiments based on multi-objective Taguchi approach was employed for development of mathematical model correlating important process parameters like welding voltage (V), welding current (I), st...
      PubDate: Mon, 03 Nov 2014 00:00:00 +010
       
 
 
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