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The paper presents the experimental studies on the effect of the water containing micro-nano bubbles of various gases on the physico-mechanical properties of lime-cement mortars. In total, 7 types of mortars were prepared: with water containing the micro-nano bubbles of O2, O3 or CO2 as 50% or 100% substitute of ordinary mixing water (tap water) and the reference mortar prepared using tap water. In order to determine the influence of water with micro-nano bubbles of gases, the consistency of fresh mortar and the physical properties of hardened mortar, i.e., specific and apparent density, total porosity, water absorption by weight and capillary absorption, were established. The mechanical strength of the considered mortars was studied as well by conducting the tests for flexural and compressive strengths following 14, 28 and 56 days. Reduced workability and capillary absorption were observed in the modified mortars within the range of 0.9–8.5%. The mortars indicated an increase in the flexural strength after 28 days ranging from 3.4% to 23.5% and improved compressive strength in 1.2–31%, in comparison to the reference mortar. The conducted studies indicated increased flexural and compressive strengths along with the share of micro-nano bubbles of gases in the mixing water.
Małgorzata Grzegorczyk-Frańczak; Danuta Barnat-Hunek; Wojciech Andrzejuk; Jacek Zaburko; Monika Zalewska; Grzegorz Łagód. Physical Properties and Durability of Lime-Cement Mortars Prepared with Water Containing Micro-Nano Bubbles of Various Gases. Materials 2021, 14, 1902 .
AMA StyleMałgorzata Grzegorczyk-Frańczak, Danuta Barnat-Hunek, Wojciech Andrzejuk, Jacek Zaburko, Monika Zalewska, Grzegorz Łagód. Physical Properties and Durability of Lime-Cement Mortars Prepared with Water Containing Micro-Nano Bubbles of Various Gases. Materials. 2021; 14 (8):1902.
Chicago/Turabian StyleMałgorzata Grzegorczyk-Frańczak; Danuta Barnat-Hunek; Wojciech Andrzejuk; Jacek Zaburko; Monika Zalewska; Grzegorz Łagód. 2021. "Physical Properties and Durability of Lime-Cement Mortars Prepared with Water Containing Micro-Nano Bubbles of Various Gases." Materials 14, no. 8: 1902.
Pipe tanks represent important runoff retention elements of urban stormwater systems. They enable us to reduce and retain runoff as well as to mitigate peak flows in the network. Pipe tanks are often taken into account while designing the spatial plan of urban catchment areas. Hence, there is a need to develop a relatively quick and accurate method for pipe tank dimensioning. A graphical–analytical method of designing a pipe tank is presented in the paper. In the assumed methodology, the possibility of employing machine learning for obtaining a more precise error prediction of the proposed pipe tank design method (compared with the tank volume simulations using the storm water management model (SWMM)) are considered. Thus far, this aspect has not been discussed in the literature. In the adopted calculation methodology, sensitivity analysis constitutes an important element, enabling us to assess the influence of the input data assumed for tank design on the dimensions of the outflow devices and the length of the retention chamber.
Bartosz Szeląg; Adam Kiczko; Anna Musz-Pomorska; Marcin Widomski; Jacek Zaburko; Grzegorz Łagód; David Stránský; Marek Sokáč. Advanced Graphical–Analytical Method of Pipe Tank Design Integrated with Sensitivity Analysis for Sustainable Stormwater Management in Urbanized Catchments. Water 2021, 13, 1035 .
AMA StyleBartosz Szeląg, Adam Kiczko, Anna Musz-Pomorska, Marcin Widomski, Jacek Zaburko, Grzegorz Łagód, David Stránský, Marek Sokáč. Advanced Graphical–Analytical Method of Pipe Tank Design Integrated with Sensitivity Analysis for Sustainable Stormwater Management in Urbanized Catchments. Water. 2021; 13 (8):1035.
Chicago/Turabian StyleBartosz Szeląg; Adam Kiczko; Anna Musz-Pomorska; Marcin Widomski; Jacek Zaburko; Grzegorz Łagód; David Stránský; Marek Sokáč. 2021. "Advanced Graphical–Analytical Method of Pipe Tank Design Integrated with Sensitivity Analysis for Sustainable Stormwater Management in Urbanized Catchments." Water 13, no. 8: 1035.
In the present work, for the first time, free vibration response of angle ply laminates with uncertainties is attempted using Multivariate Adaptive Regression Spline (MARS), Artificial Neural Network-Particle Swarm Optimization (ANN-PSO), Gaussian Process Regression (GPR), and Adaptive Network Fuzzy Inference System (ANFIS). The present approach employed 2D C 0 stochastic finite element (FE) model based on the Third Order Shear Deformation Theory (TSDT) in conjunction with MARS, ANN-PSO, GPR, and ANFIS. The TSDT model used eliminates the requirement of shear correction factor owing to the consideration of the actual parabolic distribution of transverse shear stress. Zero transverse shear stress at the top and bottom of the plate is enforced to compute higher-order unknowns. C 0 FE model makes it commercially viable. Stochastic FE analysis done with Monte Carlo Simulation (MCS) FORTRAN inhouse code, selection of design points using a random variable framework, and soft computing with MARS, ANN-PSO, GPR, and ANFIS is implemented using MATLAB in-house code. Following the random variable frame, design points were selected from the input data generated through Monte Carlo Simulation. A total of four-mode shapes are analyzed in the present study. The comparison study was done to compare present work with results in the literature and they were found in good agreement. The stochastic parameters are Young’s elastic modulus, shear modulus, and the Poisson ratio. Lognormal distribution of properties is assumed in the present work. The current soft computation models shrink the number of trials and were found computationally efficient as the MCS-based FE modelling. The paper presents a comparison of MARS, ANN-PSO, GPR, and ANFIS algorithm performance with the stochastic FE model based on TSDT.
Bharat Mishra; Ajay Kumar; Jacek Zaburko; Barbara Sadowska-Buraczewska; Danuta Barnat-Hunek. Dynamic Response of Angle Ply Laminates with Uncertainties Using MARS, ANN-PSO, GPR and ANFIS. Materials 2021, 14, 395 .
AMA StyleBharat Mishra, Ajay Kumar, Jacek Zaburko, Barbara Sadowska-Buraczewska, Danuta Barnat-Hunek. Dynamic Response of Angle Ply Laminates with Uncertainties Using MARS, ANN-PSO, GPR and ANFIS. Materials. 2021; 14 (2):395.
Chicago/Turabian StyleBharat Mishra; Ajay Kumar; Jacek Zaburko; Barbara Sadowska-Buraczewska; Danuta Barnat-Hunek. 2021. "Dynamic Response of Angle Ply Laminates with Uncertainties Using MARS, ANN-PSO, GPR and ANFIS." Materials 14, no. 2: 395.
The use of modern methods and modelling and simulation tools in the design of bioreactors allows for the analysis of flow phenomena in a short period of time without the need of physical model preparation, and thus for the optimization of existing solutions. The article presents simulations of...
Jacek Zaburko; Radosław Głowienka; Marcin Konrad Widomski; Joanna Szulżyk-Cieplak; Roman Babko; Grzegorz Łagód. Modeling of the Aeration System of a Sequencing Batch Reactor. Journal of Ecological Engineering 2020, 21, 249 -256.
AMA StyleJacek Zaburko, Radosław Głowienka, Marcin Konrad Widomski, Joanna Szulżyk-Cieplak, Roman Babko, Grzegorz Łagód. Modeling of the Aeration System of a Sequencing Batch Reactor. Journal of Ecological Engineering. 2020; 21 (7):249-256.
Chicago/Turabian StyleJacek Zaburko; Radosław Głowienka; Marcin Konrad Widomski; Joanna Szulżyk-Cieplak; Roman Babko; Grzegorz Łagód. 2020. "Modeling of the Aeration System of a Sequencing Batch Reactor." Journal of Ecological Engineering 21, no. 7: 249-256.
This paper is concerned with the issues of cybersecurity and it presents AHP multi-criteria analysis methodology applied for assessing the level of real threats arising from cyberspace that affect the information security. Based on the results of surveys conducted among employees of a selected state institution, we carried out an analysis of awareness of the dangers of cyberspace and ways employees respond to incidents in systems. Taking into account the research results, an appropriate mechanism for the provision of an adequate level of information security was proposed.
J Zaburko; J Szulżyk-Cieplak. Information security risk assessment using the AHP method. IOP Conference Series: Materials Science and Engineering 2019, 710, 012036 .
AMA StyleJ Zaburko, J Szulżyk-Cieplak. Information security risk assessment using the AHP method. IOP Conference Series: Materials Science and Engineering. 2019; 710 (1):012036.
Chicago/Turabian StyleJ Zaburko; J Szulżyk-Cieplak. 2019. "Information security risk assessment using the AHP method." IOP Conference Series: Materials Science and Engineering 710, no. 1: 012036.
Sequencing batch reactors (SBR) can be used as a fill-and draw activated sludge system for wastewater treatment with considerable operating flexibility and the possibility to conduct experiments under standard conditions and extreme case scenarios. Mathematical modeling and computer simulations provide an opportunity to implement existing wastewater processes in modeling software and evaluate different modifications at low costs and no disturbances for on-going processes of full scale WWTP. Additionally, the used model can be calibrated and validated against experimental data from laboratory scale devices. The aim of this study was to simulate the processes occurring in laboratory scale SBR under different aeration strategies. The results include the analysis of the adaptation period of the activated sludge biomass in the SBR, as well as the case of breakdown of treatment process due to stoppage of raw wastewater inflow and the interruption of the aeration and/or mixing. As a result, it can be stated that the oxygen transfer rate should be incorporated in the calibration of biological nutrient removal model in order to effectively visualize the individual contributions of each process.
G Łagód; A Piotrowicz; Wojciech Cel; Jacek Zaburko; J Drewnowski. Modeling sequencing batch reactor operational conditions depending on oxygen concentration. IOP Conference Series: Materials Science and Engineering 2019, 710, 012026 .
AMA StyleG Łagód, A Piotrowicz, Wojciech Cel, Jacek Zaburko, J Drewnowski. Modeling sequencing batch reactor operational conditions depending on oxygen concentration. IOP Conference Series: Materials Science and Engineering. 2019; 710 (1):012026.
Chicago/Turabian StyleG Łagód; A Piotrowicz; Wojciech Cel; Jacek Zaburko; J Drewnowski. 2019. "Modeling sequencing batch reactor operational conditions depending on oxygen concentration." IOP Conference Series: Materials Science and Engineering 710, no. 1: 012026.
R Babko; T Diachenko; Yaroslav Danko; Jacek Zaburko; J Szulżyk-Cieplak. The structure of higher aquatic vegetation in the genetic series of floodplain reservoirs. IOP Conference Series: Materials Science and Engineering 2019, 710, 1 .
AMA StyleR Babko, T Diachenko, Yaroslav Danko, Jacek Zaburko, J Szulżyk-Cieplak. The structure of higher aquatic vegetation in the genetic series of floodplain reservoirs. IOP Conference Series: Materials Science and Engineering. 2019; 710 ():1.
Chicago/Turabian StyleR Babko; T Diachenko; Yaroslav Danko; Jacek Zaburko; J Szulżyk-Cieplak. 2019. "The structure of higher aquatic vegetation in the genetic series of floodplain reservoirs." IOP Conference Series: Materials Science and Engineering 710, no. : 1.