April 2012
Effect of tea in the treatment of obesity
Obesity is a growing problem causing significant morbidity and mortality in the word. The efficacy of conventional therapies is limited. Numerous alternative therapies are advocated for weight loss, including dietary modifications, hypnotherapy, and acupuncture. Many herbal medications and dietary supplements have being used. Most have been tested in very limited trials. None have been evaluated to the extent...
April 2012
Antigenotoxic effects of Indian mustard Brassica juncea (L.) Czern aqueous seeds extract against mercury (Hg) induced genotoxicity
The present study evaluates the antigenotoxic effects of B. juncea (L.) Czern.(Indian mustard) aqueous seed extract on the Allium cepa L. (common onion) root tip cells. The experiment was carried at three stages: (1) onion bulbs were treated with 0.75 ppm mercury for 3 h, and then treated with different concentrations (0.1, 0.25, 0.50, 0.75, and 1.0%) of aqueous extract for another 3...
April 2012
Prediction of rotary machinery degradation status based on vibration data using back propagation (BP) neural network
Rotary machinery has to be maintained and repaired exactly once or several times before they totally failed to keep their good working status. In order to determine the maintenance interval of rotary machinery, machine condition should be predicted by some diagnostic methods and predictive methods. This study was conducted to establish the relationship between machine performance and machine vibration and to...
April 2012
ARL performance of residual control charts for trend AR(1) process: A case study on peroxide values of stored vegetable oil
For the purpose of process control, quality assurance engineers in a vegetable oil factory wonder the performance of the Shewhart, CUSUM, and EWMA residual control charts for peroxide values that show both serial autocorrelation between adjacent observations (autocorrelation) and upward linear trend. To deal with autocorrelated process data, a primary method is to apply these charts to the uncorrelated...
April 2012
Nonlinear system identification using clustering algorithm and particle swarm optimization
The identification of nonlinear systems operating in a stochastic environment is an important problem in various discipline science and engineering. Fuzzy modeling and especially the T-S fuzzy model draw the attention of several researchers in recent decades this is due to their potential to approximate highly nonlinear behavior. An algorithm allowing the identification of the premise and consequent...
April 2012
Development and Implementation of E-Education Model in a Higher Education Institution
This paper considers the problem of realization of e-learning infrastructure based on cloud computing at a university level. The primary goal is to develop a model of scalable and reliable infrastructure and services for e-learning. The proposed model is based on a private cloud realized within the existing infrastructure of a higher education institution. The model has been implemented at the Faculty of...
April 2012
Seasonal performance evaluation of solar stills connected to passive external condensers
In recent years, investigations and research has focused on exploring methods and finding ways to enhance solar stills efficiency and increase the production rates. In this study, experiments were carried out for 24 h during summer, autumn, and winter in order to investigate the affect of incorporating passive external condensers to a single-slope, single basin type solar still. Therefore, three identical...
April 2012
Sintering characteristics of ceramsite manufactured from blast furnace slag and sewage sludge
To develop a method of recycling solid wastes, blast furnace slag (BFS) and sewage sludge (SS) were added as components for making ceramsite. This study examined the sintering characteristics of ceramsite at different sintering temperatures and duration and different mass ratios of materials (BFS:SS:clay). The results show that as the sintering temperature and duration increased, the pore -size diameter...
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