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Segregation in water fluidized beds of sand particles
(Elsevier Science Sa, Lausanne, 2013)
Fluidization experiments were conducted on four fractions of filtration (quartz) sand using columns of 144 and 64 mm i.d. The size distribution of the fractions obtained by sieving followed an approximately modified normal ...
The electrochemical behavior of PtRu- and Pt-modified zeolite X in alkaline solution
(Springer, New York, 2013)
Zeolite NaX was modified by Pt and Pt/Ru nanodispersed metallic clusters. The procedure of impregnation with acetylacetonate salt/acetone solution was applied. Scanning electron microscope analysis confirmed partial zeolite ...
Comparative Spectroscopic Characterization of the Basic and the Higher Fullerenes
(Taylor & Francis Inc, Philadelphia, 2013)
The basic C-60 and C-70, and the higher fullerenes, mainly C-76 and C-84, were extracted by original procedures, with p-xylene and the mixture of xylenes from the samples of initial carbon soot, produced in electrical arc. ...
Printed Antenna Arrays with Cylindrical Parabolic Reflector
(20th Telecommunications Forum, TELFOR 2012 - Proceedings, 2012)
Concept of design and realization of high gain printed antenna structures is presented. They consist of antenna array, subreflector, feeding network and bal-un, all printed on the same dielectric substrate. Linear array ...
Analyse of One Type of Resonant Cell
(9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv, 2009)
Analyse of one type of resonant cell is proposed. One to three cells are combined into a low pass filter. The filter design curves for various substrates and cut off frequencies are presented.
New Modified Microstrip Bandstop Filter with Only One (First Order) Bandstop
(9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv, 2009)
In this paper, a new structure with only one (first order) bandstop is reported. A simple trapezoid shape of the microstrip line is introduced instead of the more complicated pattern. It obtains simple simulation, optimization ...
Accumulation and seasonal variation of toxic and trace elements in tissues of Cyprinus carpio from semi-intensive aquaculture ponds
(Edp Sciences S A, Les Ulis Cedex A, 2018)
The aim of this study was to assess the accumulation and seasonal variations of 20 toxic and trace elements in the abdominal and dorsal muscle (DM), liver and gut contents (GCs) of Cyprinus carpio, and in the sediments and ...
Studies on Chlorate Cell Process: III . Depolarization of Cathodic Hydrogen Evolution in the Bipolar Chlorate Cell Process
(IOP Publishing, 1969)
The cathode process of hydrogen evolution in chlorate cells, including possible depolarization, has not been studied to date. High hydrogen polarization at graphite electrodes delayed the industrial application of bipolar ...
Fulvic acid characterization in an alluvial sediment sequence: differences between clay and sand environments
(Elsevier, 1992)
Fulvic acids (FAs) from the whole Quaternary sequence (to a depth of 26 m) of the alluvial sediment of the Sava river (taken from a site in Novi Beograd, Belgrade, Yugoslavia) were investigated with the aim of examining ...
Vacuum Sensing Based on the Influence of Gas Pressure on Thermal Time Constant
(Institute of Electrical and Electronics Engineers Inc., 2014)
In this paper we propose a novel operating principle for thermal vacuum sensor. The sensor considered in this work consists of thermopiles and thermally isolating membrane structure. The operating principle of such sensor ...