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Wyszukujesz frazę "Ayyappan, S." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Comparison of four state observer design algorithms for MIMO system
Autorzy:
Vinodh, K. E.
Jovitha, J
Ayyappan, S.
Powiązania:
https://bibliotekanauki.pl/articles/229209.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
luenberger observer
Kalman observer
unknown input observer
sliding mode observer
Opis:
A state observer is a system that models a real system in order to provide an estimate of the internal state of the system. The design techniques and comparison of four different types of state observers are presented in this paper. The considered observers include Luenberger observer, Kalman observer, unknown input observer and sliding mode observer. The application of these observers to a Multiple Input Multiple Output (MIMO) DC servo motor model and the performance of observers is assessed. In order to evaluate the effectiveness of these schemes, the simulated results on the position of DC servo motor in terms of residuals including white noise disturbance and additive faults are compared.
Źródło:
Archives of Control Sciences; 2013, 23, 2; 243-256
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microbial Leaching of Chromium From Solidified Waste Forms – a Kinetic Study
Autorzy:
Ayyappan, C. S.
Powiązania:
https://bibliotekanauki.pl/articles/124033.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Thiobacillus thiooxidans
microbial degradation
shrinking core model
Opis:
In this study, Thiobacillus thiooxidans (T. thiooxidans) was used to study the microbial stability / degradation of cement-based waste forms. The waste forms contained a chromium salt (CrCl3·6H2O), cement and other additives viz., lime and gypsum in two different proportions. The experimental samples of all the simulated waste forms showed evidence of microbial growth as indicated by substantial increase in sulfate. Chromium leached from the waste forms was found to be lowest in cement – lime solidified waste forms (0.061 mg·1-1) and highest in cement gypsum waste forms (0.22 mg·1-1) after 30 days of exposure. These values were lower than the toxicity characteristic leaching procedure (TCLP), regulatory limit (5 mg·1-1). Model equations based on two shrinking core models (acid dissolution and bulk diffusion model), were used to analyze the kinetics of microbial degradation of cement based waste forms. The bulk diffusion model was observed to fit the data better than the acid dissolution model, as indicated by good correlation coefficients.
Źródło:
Journal of Ecological Engineering; 2015, 16, 3; 36-42
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal influence of physico-chemical parameters on phytoplankton diversity, community structure and abundance at Parangipettai coastal waters, Bay of Bengal, South East Coast of India
Autorzy:
Vajravelu, M.
Martin, Y.
Ayyappan, S.
Mayakrishnan, M.
Powiązania:
https://bibliotekanauki.pl/articles/47903.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
phytoplankton
community structure
abundance
seasonal variation
nutrient dynamics
physicochemical parameter
Parangipettai
coastal water
Bengal Bay
India coast
Źródło:
Oceanologia; 2018, 60, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Novel Bio-Waste Incorporated Alginate Sorbent for De-Fluoridation of Water
Autorzy:
Ayyappan, C. S.
Sreeja, S.
Bhalambaal, V. M.
Powiązania:
https://bibliotekanauki.pl/articles/124891.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
tamarind seeds
defluoridation
sodium alginate
column study
water purification
Opis:
This study evaluates the feasibility of using tamarind (Tamarindus indica) seed powder for de-fluoridation of fluoride contaminated water. Batch study confirmed that tamarind seeds in dry powder form could remove 87% of fluoride from water. This bio-sorbent can be used effectively in areas where fluoride concentrations are above the permissible limits of 1.5 mg·l-1 as per WHO Standard, 1984. Tamarind seed powder was incorporated in a matrix of sodium alginate and made into gel-beads. The beads were tested for de-fluoridation efficiency by conducting column studies. The effect of various factors, such as flow rate, retention time, and the number of runs on the efficacy of fluoride removal was also studied. The results revealed that flow rate did not seem to have much effect on the percentage fluoride removal but the fluoride concentration decreased drastically upon greater retention time and multiple runs.
Źródło:
Journal of Ecological Engineering; 2015, 16, 4; 8-13
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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