Претраживање
Приказ резултата 11-20 од 4747
Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate
(Electrochemical Science Group (ESG), 2020)
Mechanical features of the Cu coatings produced by the pulsating current (PC) regime on Si(111)
substrate have been investigated. The Cu coatings were electrodeposited by varying duty cycle (15−50 %) and keeping the current ...
Periodic Operation with Modulation of Inlet Concentration and Flow Rate Part I: Nonisothermal Continuous Stirred-Tank Reactor
(Wiley, 2016)
The nonlinear frequency response (NFR) method, which is an analytical, fast, and easy method for evaluating the performance of forced periodically operated chemical reactors, was used to investigate possible improvements ...
Kerogen structural studies-oxidations with alkaline permanganate and with ferric chloride
(Elsevier, 1980)
Two oxidizing agents were used for structural studies of the kerogen from Aleksinac shale (Yugoslavia), namely: (1) alkaline potassium permanganate, and (2) acidic ferric chloride. (1) The main goal with alkaline permanganate ...
The chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel production
(Elsevier, 2021)
Lignite coal fly ash (FA) from a domestic thermal power plant was converted into a pure cancrinite zeolitic material (ZMFA) using a novel, custom-made, rotating autoclave reactor system by a short-term alkali activation ...
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. ...
The chemical characteristics of soil which determine phosphorus partitioning in highly calcareous soils / Hemijske karakteristike visoko-krečnjačkih zemljišta koje određuju raspodelu fosfora
(Serbian Chemical Society, 2006)
Phosphorus fractions from three highly calcareous soils (average, 24.9 ± 4.8 %CO3 2-) from sampling sites with a Mediterranean climate were isolated by sequential extraction. In order to provide a more reliable basis for ...
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 ...
Methanol oxidation on Ru/Pd(poly) in alkaline solution
(Elsevier, 2018)
Polycrystalline Pd electrode, Pd(poly), is modified by Ru nanoislands using spontaneous deposition method. Coverage of Pd(poly) electrode with the deposited Ru are approx. 20, 30 and 50% as estimated from phase atomic force ...