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11.
In this work, we have explored the possibility of using asymmetrical alternating current electrophoretic deposition (AC-EPD) process, which we have previously reported for enzyme deposition, to immobilize Saccharomyces cerevisiae (S. cerevisiae) cells onto stainless steel substrates. The deposition of S. cerevisiae cells at 30 Hz and 200 Vp-p permits the formation of 89 ± 16 μm thick cell layers in 30 min. The mass of the deposited cells is shown to increase quasi-linearly with the deposition time and the applied amplitude. In order to increase the mechanical stability of the immobilized cells, a thin layer of polyurethane was applied after the AC-EPD of S. cerevisiae cells. The viability of the immobilized cells was tested in the production of ethanol. The results showed that the fermentation process with the immobilized S. cerevisiae cells is more efficient than the fermentation carried out with similarly treated free cells. 相似文献
12.
Using Fuzzy Cost‐Based FMEA,GRA and Profitability Theory for Minimizing Failures at a Healthcare Diagnosis Service 下载免费PDF全文
Samira Abbasgholizadeh Rahimi Afshin Jamshidi Daoud Ait‐Kadi Angel Ruiz 《Quality and Reliability Engineering International》2015,31(4):601-615
This paper proposes an integrated approach to identify, evaluate and improve the potential failures in a service setting. This integrated approach combines Fuzzy cost‐based service‐specific FMEA (FCS‐FMEA), Grey Relational Analysis (GRA) and profitability theory for better prioritization of the service failures by considering cost as an important issue and using the profitability theory in a way that the corrective actions costs are taken into account. Considering profitability with FCS‐FMEA and GRA reduces the losses caused by failure occurrence. Besides, a maximization linear mathematical problem is used to select the best mix of failures to be repaired. We apply our approach to an academic example concerning the potential failures diagnosis of the Internal Medicine service of a hospital located in Seoul, Korea. We applied our approach and solved the associated maximization problem by a commercial solver, producing an optimal solution which indicates the most convenient mix of failures to be repaired by considering available budget. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
13.
Farid Miloua Amar Tilmatine Sidi-Mohammed Remaoun Djeloul Berrached Malika Bengrit 《The International journal of environmental studies》2013,70(4):527-535
The paper reports the development and implementation of a cost-effective electrostatic precipitator (ESP) prototype for the medical wastes incinerator of university hospital centre (CHU) of Sidi-Bel-Abbes, using a water washing system for cleaning electrodes. The impact of medical waste incineration on human health is a topical debate. The incineration process is a safe mode of disposal [OK] of such waste, but it is not an effective solution and needs a pollution control system. Generally, in Africa, cost is the major constraint for manufacturers and users. A half-scale ESP model was initially used for an experimental study in the laboratory. Thereafter, a full-scale model was produced and installed for the incinerator based on the optimal values obtained from this preliminary study. 相似文献
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Hazem M. Bahig Sameh S. Daoud Mahmoud K. A. Khairat 《The Journal of supercomputing》2002,22(3):269-275
We consider the problem of sorting n integers when the elements are drawn from the restricted domain [1...n]. A new deterministic parallel algorithm for sorting n integers is obtained. Its running time is O(lognlog(n/logn)) using n/logn processors on EREW (exclusive read exclusive write) PRAM (parallel random access machine). Also, our algorithm was modified to become optimal when we use
processors. This algorithm belongs to class EP (Efficient, Polynomial fast). 相似文献
18.
We consider retrial queueing systems, in which an arriving customer finding the server busy, may repeat his call after a random duration. The consideration of repeated calls introduces great analytical difficulties. In fact, detailed analytical results exist for some special retrial queueing systems, while for many others, the performance evaluation is limited to numerical algorithms, approximation methods and simulation. Retrial queues have been widely used to model many problems in telephone switching systems, telecommunication and computer networks. In this paper, we show a method of modelling and analysing retrial queueing systems, using the Generalized Stochastic Petri nets (GSPNs). 相似文献
19.
Mandeep M. Sahani Tarek M. Daoud Ramin Sam Jerry Andrews Yuk Lun Cheng Carl M. Kjellstrand Todd S. Ing 《Hemodialysis international. International Symposium on Home Hemodialysis》2001,5(1):92-96
An aggressive dialysis in a grossly azotemic patient, especially one with severe metabolic acidosis, can lead to dialysis disequilibrium syndrome (DDS). Mild forms present as nausea, vomiting, restlessness, and headache. Severe manifestations include seizures, obtundation, coma, and even death. This clinical picture is caused by cerebral edema induced by one or more of the following mechanisms:
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20.
Djamel Addou Sid-Ahmed Selouani Kaoukeb Kifaya Malika Boudraa Bachir Boudraa 《International Journal of Speech Technology》2007,10(4):167-173
This paper investigates a new front-end processing that aims at improving the performance of speech recognition in noisy mobile
environments. This approach combines features based on conventional Mel-cepstral Coefficients (MFCCs), Line Spectral Frequencies
(LSFs) and formant-like (FL) features to constitute robust multivariate feature vectors. The resulting front-end constitutes
an alternative to the DSR-XAFE (XAFE: eXtended Audio Front-End) available in GSM mobile communications. Our results showed
that for highly noisy speech, using the paradigm that combines these spectral cues leads to a significant improvement in recognition
accuracy on the Aurora 2 task. 相似文献