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Wyświetlanie 1-3 z 3
Tytuł:
Influence of glycerol and temperature on the rheological properties of potato starch solutions
Autorzy:
Ayala, G.
Vargas, R.A.
Agudelo, A.C.
Powiązania:
https://bibliotekanauki.pl/articles/24305.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
glycerol
temperature
rheological property
potato starch
solution
pseudoplastic behaviour
rheological model
Opis:
Effects of temperature and glycerol concentration on rheological properties of potato starch solutions were investi- gated. The flow behaviour (shear stress against shear rate) was fitted to various models: power law, Herschel-Bulkley, Bingham, modified Bingham and Casson models. However, it was found that the Herschel-Bulkley model describes better the flow behaviour observed at various temperatures and glycerol concentrations, for flow behaviour index values between 0.44 and 0.78, typical of pseudoplastic solutions. The effect of glycerol concentration on each of the fitting parameters for Herschel-Bulkley model was well modelled by a second-degree polynomial at various temperatures. The simultaneous influence of glycerol concentration and tempe- rature on shear stress could be represented empirically by a second- degree polynomial function that includes linear coupling between concentration and temperature. Finally, the variation of the con- sistency coefficient with both temperature and glycerol concentra- tion was well described by an exponential expression, with an acti- vation energy value of 2.78 kJ mol -1 . The results indicate that both glycerol content and temperature have the effect of diluting potato starch solutions.
Źródło:
International Agrophysics; 2014, 28, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical models for prediction of rheological parameters in vinasses derived from sugar cane
Autorzy:
Chacua, L.M.
Ayala, G.
Rojas, H.
Agudelo, A.C.
Powiązania:
https://bibliotekanauki.pl/articles/25873.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
mathematical model
prediction
rheological parameter
vinasse
sugar-cane
ethanol production
rheological model
Źródło:
International Agrophysics; 2016, 30, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seroprevalence of Antibodies against Borrelia burgdorferi s. l. and Leptospira interrogans s. l. in Cats in district of Brno and its environs, the Czech Republic
Autorzy:
Zakovska, A.
Schanilec, P.
Tremi, F.
Duskova, M.
Agudelo, R.C.F.
Powiązania:
https://bibliotekanauki.pl/articles/2086007.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
feline
Leptospirosis
Lyme borreliosis
ELISA
Microscopic agglutination test
Opis:
Objectives. The aim of this study is to evaluate the seroprevalence of antibodies of Borrelia burgdorferi sensu lato (Bbsl) and Leptospira interrogans sensu lato (Lisl) and their possible concurrence in domestic cats living in variable conditions in South Moravia in the district of Brno and its environs. Additional objectives were to discover possible differences in seroprevalence between groups of cats living in different living conditions, and to determine the spectrum of Leptospira serogroups in cats in the same places. Materials and method. A total of 360 blood sera from domestic cats of 3 different sets were collected during the period 2013–2015. All samples were examined using ELISA for the detection of IgM and IgG antibodies against Bbsl, and the microscopic agglutination test (MAT) for the detection of antibodies against 8 serogroups of Lisl. Results. The ELISA method determined 15.8%, 4.8% and 10.3% IgM anti-Borrelia antibodies in the patient group, shelter cats and street cats, respectively. IgG anti-Borrelia antibodies were found in 6.2%, 9.5%, 5.2%, respectively. Antibodies specific for 5 Leptospira serogroups were detected by the use of MAT in 8.8%, 9.5% and 10.3% of cats from the investigated groups. The total positivity of all examined cats for anti-Borrelia antibodies was 18.0% and for anti-Leptospira – 9.2%. Conclusions. Cats can be infected with both Bbsl and Lisl. The obtained results are exclusive to the city of Brno and its environs, and are comparable to the limited previous studies. There is a need for further studies of clinical signs of both infections and the possible transmission of Leptospira by ticks.
Źródło:
Annals of Agricultural and Environmental Medicine; 2020, 27, 3; 356-360
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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