نتایج جستجو برای: Separation Efficiency
تعداد نتایج: 504182 فیلتر نتایج به سال:
among the all parameters affecting the performance of a downhole de-oiling hydrocyclone, the investigation of internal flow field deserves more attempts especially in the petroleum industry. in this study, the effects of inlet flow rate, inlet oil volume fraction, and oil droplet diameter on the separation efficiency and pressure drop ratio have been investigated along the hydrocyclone body. al...
in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...
in this study, different methods of separating of the microalgae from the culture medium as one of the most important and expensive steps in achieving commercial production of biodiesel from microalgae was investigated. electro coagulation-flotation (ecf) was preferred among these methods due to its process simplicity and capability to scale up. the effect of three parameters, i.e., initial ph,...
Among the all parameters affecting the performance of a downhole de-oiling hydrocyclone, the investigation of internal flow field deserves more attempts especially in the petroleum industry. In this study, the effects of inlet flow rate, inlet oil volume fraction, and oil droplet diameter on the separation efficiency and pressure drop ratio have been investigated along the hydrocyclone body. Al...
Abstract As the key piece of equipment a micro-irrigation system, filter can prevent clogging emitter and ensure normal operation system. A gill-piece separation device is used for removal viscous sediment, which helps to reduce sediment concentration decrease burden on filter. In this study, using water–sediment efficiency as an evaluation index, uniform orthogonal experiment was conducted stu...
We compare independent component analysis (ICA) [Bell and Sejnowski, 1995] to an alternative method [Fisher and Principe, 1996] for blind source separation of instantaneous linear mixtures. The method and its application to blind source separation of instantaneous linear mixtures is reviewed. Empirical results separating sources of varying kurtosis and a limited number of samples are presented....
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
7 This paper addresses the well known permutation problem in frequency domain 8 blind source separation. The proposed method uses correlation between two signals 9 in each DFT bin to solve the permutation problem. One of the signals is par10 tially separated by a time domain blind source separation method and the other 11 is obtained by the frequency domain blind source separation method. Two d...
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