July 2012
Fuzzy logic in candidate-well selection for hydraulic fracturing in oil and gas wells: A critical review
During the last two decades, Fuzzy Logic (FL) Systems have been increasingly applied to the research area of petroleum engineering. Hydraulic Fracturing (HF) as an important discipline in this area and stimulation of oil and gas wells is an important tool for natural gas and oil exploitation, whose success relies on proper selection of target well and target formation. To date, however, no paper has attempted...
July 2012
Improving the flow in pipelines by Cocos nucifera fiber waste
In this study, fiber performance as drag reducing agent in aqueous media flow in pipeline was investigated. Use of fiber from the Cocos nucifera (coconut) to reduce friction in pipe flow is a new invention in the fluid transport technology. The use of coconut fiber in liquid pipelines can reduce operating costs which can have a...
July 2012
Conjugate effects of heat and mass transfer of nanofluids over a nonlinear stretching sheet
This study investigates theoretically the problem of free convection boundary layer flow of nanofluids over a non-linear stretching sheet. The model used for the nanofluid incorporates the effects of buoyancy parameter, the solutal buoyancy parameter and the power law velocity parameter, and found to have strong influence on the system. The resulting non-linear partial differential equations with...
July 2012
Chemical and microbial investigation of drinking water sources from Kohat, Pakistan
Safe drinking water is one of the basic human rights and essential need for healthy life. In Pakistan, the quality of drinking water is not being managed properly and various studies provide evidence that most of the drinking-water supplies are contaminated. In this study, 60 drinking water samples from both urban and rural areas of district Kohat were analyzed chemically and microbiologically, to find...
July 2012
Effect of glue splotches on coloring
Particleboard surfaces of 18 mm were coated with Scots pine (Pinus sylvestris L.), oriental beech (Fagus orientalis L.) and sessile oak (Quercus petraea L.), wood veneers, were splotched with urea formaldehyde (UF), polyvinyl acetate (PVAc), contact (rubber adhesive) and gluten glues. Then, these surfaces were colored with wood stains of aniline, chemical {(tannin) (C14H10O9) + potassium...
July 2012
Seismic performance of structures with pre-bent strips as a damper
In this study, a new type of structural damper in the form of braces based on pre-bent strips has been proposed. In designing the structures, parameters that support the safety of structures like base shear, acceleration and displacement are so important. To create safe conditions in structures some new technologies like vibration control and isolation have been considered. Vibration control has been studied...
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