نتایج جستجو برای: a separation
تعداد نتایج: 13459767 فیلتر نتایج به سال:
Abstract: We consider a new scenario in blind speech separation problem in which the number and the features of active sources change with time in opposite to the previous methods in which all sources are active all the time. Accordingly, we propose the new DESICA algorithm for source separation which is a compound of the ICA and DESPRIT algorithms. In this algorithm, using the ICA, the separat...
Introduction: Parking areas that are gathering places for tank trucks are potentially dangerous places. This study analyzes accident consequences of oil products carriers, to check and compare the hazard radius with recommended separation distances. Methods: This descriptive-analytical study was carried out in 5 stages, including: scenario selection, determination of the accidents source para...
reducing co2 emission and lowering the concentration of greenhouse gases in the atmosphere has quickly become one of the most urgent environmental issues. while a variety of technologies and methods have been developed, the separation of co2 from gas streams is still a critical issue. apart from establishing new techniques, the exploration of membrane materials with high separation performance ...
Rootletin, a major structural component of the ciliary rootlet, is located at the basal bodies and centrosomes in ciliated and nonciliated cells, respectively. Here we investigated its potential role in the linkage of basal bodies/centrioles and the mechanism involved in such linkages. We show that rootletin interacts with C-Nap1, a protein restricted at the ends of centrioles and functioning i...
The problem of separating convolutive mixtures of unknown time series arises in several application domains, a prominent example being the so-called cocktail party problem, where we want to recover the speech signals of multiple speakers who are simultaneously talking in a room. The room may be very reverberant due to reflections on the walls, i.e., the original source signals sq(n), q = 1, . ....
in recent years there has been considerable interest in the synthesis and separation of enantiomers of organic compounds especially because of their importance in the biochemistry and pharmaceutical industry. high-performance liquid chromatography is a very useful method for the direct separation of enantiomers. however, about 30−40 years ago, commercially available chiral stationary phases wer...
pistachio nut (pistacia vera l.) is one of the most delicious and nutritious nuts in the world. in order to increase the added value of the pistachio nuts, it is necessary to develop new products to meet consumer needs. this is the first paper on pistachio halva. the product was developed using pistachio paste (as main ingredient), mixture of sugar-glucose, egg white and citric acid. the effect...
The purpose of this research was to predict the separation anxiety of primary school children based on the personality structure and thematic relationships of mothers. The descriptive research method was correlation type. The statistical population included all primary school children of schools in the 2nd district of Tehran in 2019, and 384 of them were selected using available sampling. The i...
Carbon molecular sieve membranes (CMSMs) have been considered as very promising candidates for gas separation, in terms of separation properties as well as thermal and chemical stability. Due to the numerous advantages and wide applications of carbon membranes, their application for gas separation is of special importance. Because of the importance of carbon membranes and a large number of stud...
Background & Objectives: One of the most common anxiety disorders in children is separation anxiety disorder (SAD). The purpose of the present study was to investigate the epidemiology of separation anxiety disorder in Isfahan primary school male student. Methods: The present study was a descriptive study. The statistical population was all the male students from 7 to 9 years old, studying in ...
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