Temat: mathematical equation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Sensitivity analysis of mathematical models of signalling pathways
Autorzy:: Charzynska, A.
Nalecz, A.
Rybinski, M.
Gambin, A.
Powiązania:: https://bibliotekanauki.pl/articles/80205.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: membrane receptor
differential equation
stochastic model
modelling
sensitivity analysis
mathematical model
signalling pathway
dynamic behaviour
Źródło:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2012, 93, 3
0860-7796
Pojawia się w:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Development of a mathematical model of the generalized diagnostic indicator on the basis of full factorial experiment
Autorzy:: Sychenko, V. G.
Mironov, D. V.
Powiązania:: https://bibliotekanauki.pl/articles/223935.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: electricity
traction substation
maintenance
diagnostics
full factorial experiment
mathematical model
regression equation
Elektryczność
podstacja trakcyjna
konserwacja
diagnostyka
eksperyment czynnikowy
model matematyczny
równanie regresji
Opis:: Purpose. The aim of this work is to develop a mathematical model of the generalized diagnostic indicator of the technical state of traction substations electrical equipment. Methodology. The main tenets of the experiment planning theory, methods of structural-functional and multi-factor analysis, methods of mathematical and numerical modeling have been used to solve the set tasks. Results. To obtain the mathematical model of the generalized diagnostic indicator, a full factorial experiment for DC circuit breaker have been conducted. The plan of the experiment and factors affecting the change of the unit technical condition have been selected. The regression equation in variables coded values and the polynomial mathematical model of the generalized diagnostic indicator of the circuit breaker technical condition have been obtained. On the basis of regression equation analysis the character of influence of circuit breaker diagnostic indicators values on generalized diagnostic indicator changes has been defined. As a result of repeated performances of the full factorial experiment the mathematical models for other types of traction substations power equipment have been obtained. Originality. An improved theoretical approach to the construction of generalized diagnostic indicators mathematical models for main types of traction substations electric equipment with using the methods of experiments planning theory has been suggested. Practical value. The obtained polynomial mathematical models of the generalized diagnostic indicator D can be used for constructing the automated system of monitoring and forecasting of the traction substations equipment technical condition, which allows improving the performance of processing the diagnostic information and ensuring the accuracy of the diagnosis. Analysing and forecasting the electrical equipment technical condition with the using of mathematical models of generalized diagnostic indicator changes process allows constructing the optimal strategy of maintenance and repair based on the actual technical condition of the electrical equipment. This will reduce material and financial costs of maintenance and repair work as well as the equipment downtime caused by planned inspections and repair improving reliability and uptime of electrical equipment.
Źródło:: Archives of Transport; 2017, 43, 3; 125-133
0866-9546
2300-8830
Pojawia się w:: Archives of Transport
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Mathematical Kinetic Modelling and Representing Design Equation for a Packed Photoreactor with Immobilised TiO2-P25 Nanoparticles on Glass Beads in the Removal of C.I. Acid Orange 7
Autorzy:: Sheidaei, B.
Behnajady, M. A.
Powiązania:: https://bibliotekanauki.pl/articles/185458.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: heterogeneous photocatalysis
batch-recirculated photoreactor
design equation
mathematical kinetic modelling
TiO2-P25 nanoparticles
C.I. Acid Orange 7
fotoreaktor
modelowanie matematyczne
Nanocząstki TiO2-P25
CL kwas pomarańczowy 7
Opis:: In this work, a design equation was presented for a batch-recirculated photoreactor composed of a packed bed reactor (PBR) with immobilised TiO2-P25 nanoparticle thin films on glass beads, and a continuous-flow stirred tank (CFST). The photoreactor was studied in order to remove C.I. Acid Orange 7 (AO7), a monoazo anionic dye from textile industry, by means of UV/TiO2 process. The effect of different operational parameters such as the initial concentration of contaminant, the volume of solution in CFST, the volumetric flow rate of liquid, and the power of light source in the removal efficiency were examined. A rate equation for the removal of AO7 is obtained by mathematical kinetic modelling. The results of reaction kinetic analysis indicate the conformity of removal kinetics with Langmuir-Hinshelwood model (kL-H = 0.74 mg L-1 min-1, Kads = 0.081 mg-1 L). The represented design equation obtained from mathematical kinetic modelling can properly predict the removal rate constant of the contaminant under different operational conditions (R2 = 0.963). Thus the calculated and experimental results are in good agreement with each other.
Źródło:: Chemical and Process Engineering; 2015, 36, 2; 125-133
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

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