نتایج جستجو برای: power augmentation duct
تعداد نتایج: 544986 فیلتر نتایج به سال:
background: considerable attention is focused on effects of electromagnetic field (emf) and its increasing use in everyday life. appliances and various equipments are sources of electromagnetic fields with a wide-range of technical characteristics. objective: in this study we investigated the effect of emf (50 hz, 0.5 mt) on epididymis and deferens duct in mice. materials and methods: 30 balb/c...
We studied the diagnostic predictive power of transrectal ultrasonography (TRUS) coupled with semen volume in cases of distal seminal tract sub-obstruction. As a gold standard for diagnosis we used seminal tract washout (STW). Non-azoospermic subjects (n = 112) were submitted to transrectal ultrasonography because of suspected excretory infertility or other andrological pathologies, before perf...
applications such as high definition viedeo reproduction, portable computers, wireless, and multimedia demand, and ever-increasing need for ligh-frequency high-resolution and low-power analog-to-digital converters. flash, two-step flash, and pipeline convertors are fast but consume large amount of power and require large area. to overcome these problems, successive approximation converter blo...
many mobile and off-grid devices include electronics and other electrical consumers like servo drives, which need a quite low supply power. since the price for photovoltaic modules drops continuously, photovoltaic power supply is interesting in more and more applications. in solar powered systems, a battery is needed to store energy for the night and cloudy periods. the power electronics of suc...
Developmental defect of Mullerian duct is a congenital malformation characterized by anomalies in famale upper genital organs. As the anomaly is associated with obstruction of the duct, other congenital anomalies of urinary tract specially ipsilateral ranal agenesis are common. This anomaly is often discovered in adolescent period and is usually asymptomatic until puberty. To discover this anom...
In this study, the Artificial Bee Colony Optimization (ABCO) algorithm has been proposed to estimate the atmospheric duct in maritime environment. The radar sea clutter power is calculated by the parabolic equation method. In order to validate the accuracy and robustness of ABCO algorithm, the experimental and simulation study are respectively carried out in the current research. In the simulat...
This work presents an approach to the analysis of duct-augmented wind turbines using Computational Fluid Dynamics (CFD). The main objective is find optimum duct shape and design that gives maximum boost performance turbines. A surrounding rotor able increase power coefficient above Betz limit, so it has attracted great attention for many years. In this work, extensive augmented presented, consi...
In this study, a dual pressure combined cycle power plant without duct burner for three types of fuel has been investigated. The main objective of this paper is to specify the effect of changing the fuel poperties on cycle performance and finally introducing the best choice. Applying the results, one can see that the highest exergy loss occurs in the combustion chamber and maximum energy and ex...
In the current economic, resource and carbon constrained climate, it is imperative that power distribution companies invest in only necessary network augmentation. However, with electricity demand growth over recent years doubling the electricity consumption growth, capital expenditure is following in a similar fashion relative to operational expenditure [1]. The need for greater infrastructure...
The work was an experimental study of natural heat transfer from heated cylinders fixed in variable shape air duct, made Pyrex glass. Two finned mild iron, outer diameter (12) mm, inner (10) rectangle fins dimensions (70*40) mm. angle two walls the duct changed to five angles α:(0°,3°,5°,10°,15°) with vertical make converge shape. were inside at top, centre and bottom. by supply power constant ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید