Keresés
90 találatból megjelenítve: 21-30
Cím: Some applications of S-restricted set partitions
Szerző: ;
Dátum: 2019
Feltöltve: 2023-02-20
(2019)
In the paper, the authors present several new relations and applications for the combinatorialsequence that counts the possible partitions of a finite set with the restriction that the size ofeach block is contained in a ...
Cím: Effect of Aeration on Residence Time in Biological Wastewater Treatment
Szerző:
Dátum: 2018
Feltöltve: 2023-02-20
(2018)
Aerobic wastewater treatment requires extensive aeration, which primary function is to provide oxygen to the biomass responsible fordegradation of wastewater constituents. Besides the effective oxygen transfer efficiency ...
Cím: Analysis of Reverse Osmosis Filter Permeability
Szerző: ; ;
Dátum: 2018
Feltöltve: 2023-02-20
(2018)
Unsuitable feed water quality causes fouling and serious decrease in membrane permeability during the operation of reverse osmosis filters, which leads to costly operation and low contaminant removal efficiency. The purpose ...
Cím: Mixed Restricted Stirling Numbers
Szerző: ; ; ;
Dátum: 2019
Feltöltve: 2023-02-20
(2019)
We investigate mixed partitions with extra condition on the sizes of the blocks. We give a general formula and the generating function. We consider in more details a special case, determining the generating functions, some ...
Cím: Restricted Lonesum Matrices
Szerző:
Dátum: 2018
Feltöltve: 2023-02-20
(2018)
"Lonesum matrices are matrices that are uniquely reconstructible from their row and column sum vectors. These matrices are enumerated by the poly-Bernoulli numbers"," a sequence related to the multiple zeta values with a ...
Cím: Analysis of a Mechanical Mixer Performance in Anoxic Reactor
Szerző: ;
Dátum: 2019
Feltöltve: 2023-02-20
(2019)
Denitrification is a key process in wastewater treatment since it is responsible for the effective nutrient removal. It requires anoxic conditions, where only chemically bound nitrogen is used as an oxygen source, and no ...
Cím: Heterogeneity and Anthropogenic Impacts on a Small Lowland Stream
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Dátum: 2019
Feltöltve: 2023-02-17
(2019)
During our work, we investigated the physical and chemical variables of a small surface watercourse to investigate how different anthropogenic effects affect its water quality. Along this small watercourse, there are ...
Cím: Exploitation of Algal-Bacterial Consortia in Combined Biohydrogen Generation and Wastewater Treatment
Szerző: ; ; ; ; ; ; ; ;
Dátum: 2019
Feltöltve: 2023-02-17
(2019)
Microalgae cultivation in municipal, industrial, and agricultural wastewater is an emerging, highly effective approach for resource recovery and concomitant bioenergy generation. Wastewater effluents represent ideal sources ...
Cím: Trait-based community assembly of epiphytic diatoms in saline astatic ponds: a test of the stress-dominance hypothesis
Szerző: ; ; ; ; ; ; ; ;
Dátum: 2019
Feltöltve: 2023-02-17
(2019)
The stress dominance hypothesis (SDH) postulates that strong environmental gradients drive trait convergence in communities over limiting similarity. Previous studies, conducted mostly with terrestrial plant communities, ...
Cím: Spatial analysis of changes and anomalies of intense rainfalls in Hungary
Szerző: ; ; ; ; ; ; ;
Dátum: 2019
Feltöltve: 2023-02-20
(2019)
"Extreme precipitation events can trigger flash flood, mass movements, pluvial flood and accelerated soil erosion. As soil structures are highly degraded due to intensive improper cultivation water infiltration can ...