Applied Research Journal
Volume:1 Issue: 6, Aug 2015

This study was undertaken to assess the prevalence of malaria parasitaemia among blood donors at the Lagos University Teaching Hospital (LUTH), Lagos, Nigeria. A total of 396 individuals comprising 255 males and 141 females were randomly selected for the study over a period of 6 months between November 2013 and April 2014 using standard field and laboratory techniques. 184 (46.46%) individuals were positive for malaria parasitaemia, where 168 (42.42%) individuals had Plasmodium falciparum while 16 (4.04%) individuals had Plasmodium malariae. Sex prevalence showed 129 (32.58%) and 55 (13.89%) for males and females respectively, this was statistically significant (P<0.05). Individuals between the ages of 20-30years, 31-40years, 41-50years and 51-60years showed prevalences of 21.72%, 10.61, 7.83 and 6.31% respectively. This, however was not statistically significant (P>0.05). Prevalence according to donor types showed 29.29, 8.33 and 8.84% for commercial donors, relative donors and voluntary donors respectively. This was not statistically significant (P>0.05). These results showed that there is a high prevalence of asymptomatic parasitaemia in the study area. Hence, all blood samples should be screened for malaria parasites before such blood are transfused to avert its consequences on the recipients.

Inspection is one of the important activities to detect and fix failures in repairable system. Optimization of inspection intervals has critical role in decreasing total costs of maintenance system, reduces inspection costs and increases the performance of operating system. In addition to cost, Risk Based Inspection (RBI) is one of the most important aspects of maintenance. In systems such as transformer, consideration of risk reduces the inspection interval time. The other characteristic of systems such as transformers is to failure interaction between components. The failure interaction can induce failure rate of other component. The quantity of failure interaction is usually uncertain. In this paper to overcome this uncertainty the fuzzy theory applied. On a finite time horizon, the objective of current study is to figure out the optimal risk based inspection interval time for the first component to minimize the expected total cost with using fuzzy interaction. Therefore, an adapted sample problem is resolved and numerical results are presented.

According to the impact of industrial implementation, from local economy’s perspective, on population, urban developments, texture changes of countryside, social and physical disruptions as well as changes in infrastructures, facilities and pattern of services provision, industrial locating for industrial establishment could be considered as one of the most important and pivotal discussions in industrial development. Although Industrial Revolution improved the quality of human life, it had adverse effects on the environment with its rapid expansion. Making decision for industrial locating, especially for pollutants, is significantly influenced by environmental factors in which their ignorance will bring both additional environmental problems and an increase in costs. Thus, applying Multiple Attribute Decision-making methods for consideration of these qualitative criteria could be extremely effective. In this paper, a framework along with proposed criteria for locating pollutions by the name of Green Facility Location Selection (GFLS) has been presented.

Soil improvement is an appropriate option that is often the most economical method to solve the geotechnical problems. When due to the results of geotechnical studies, the need for soil improvement to improve the soil loading, and to reduce the soil subsidence against the applied loads is detected, the required measures should be taken to prevent the destruction caused by the mentioned factors. One of the common methods for soil improvement is compression by the roller. In this study, the effect of the interaction of soil and momentum caused by the impact roller was evaluated. The results showed that by increasing the roller impact momentum, the ascending changes of the improved depth would also reduce and tend to a constant value. Also, increased coefficient of friction up to 22% can increase the soil improved depth.