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Wyszukujesz frazę "Ayala, G." wg kryterium: Autor

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    Wyświetlanie 1-4 z 4
    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:
    Development of innovative biopolymers designed for bone regeneration applications and in vitro study of their biocompatibility and osteogenic capacity on human bone marrow mesenchymal stem cells
    Autorzy:
    Basile, M. S.
    Gomez d'Ayala, G.
    Laurienzo, P.
    Malinconico, M.
    Oliva, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/284365.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    functionalization of poly(ε-caprolactone)
    bone marrow mesenchymal stem cells
    Opis:
    In the frame of a project aiming to the improvement of the properties of biodegradable polyester-based devices, designed for bone regeneration, we have prepared and characterized novel composites based on poly(ε-caprolactone) (PCL). In particular, we report in this paper the functional changes made through radical grafting on PCL to obtain the less hydrophobic derivatives, PCL-MA-GMA [maleic anhydride (MA)-glycidylmethacrylate (GMA)] and PCL-DMAEA [N-(dimethyl-amino)ethylacrylate]. In addition, we studied in vitro the biocompatibility and the osteogenic capacity of these novel polyesters on human bone marrow (BM) mesenchymal stem cells (MSC).
    Źródło:
    Engineering of Biomaterials; 2012, 15, 113; 13-15
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on health risk factors as a basis to implement programs that promote a nutritional culture in students of the la Sabana University
    Autorzy:
    Rodriguez, S.
    Martinez, M.
    Segnini, F.
    Cajiao, V.
    Aivasovsky, I.
    Celis, L.G.
    Ayala, J.
    Rozo, C.
    Russi, A.
    Girata, V.
    Almonacid, C.C.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087202.pdf
    Data publikacji:
    2021
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Tematy:
    health promotion
    disease prevention
    obesity
    non-communicable diseases
    healthy lifestyle
    Opis:
    Background. Nowadays the importance of lifestyles in the prevention of type 2 diabetes and the metabolic syndrome has been largely accertained. Objective. The purpose of our work is to implement programs that promote a nutritional culture in adolescents and young adults of the La Sabana University. Methods. The methodology entailed, after the corresponding informed consent, taking measures of the triceps and supraescapular skinfolds, waist circumference, body mass index (BMI), lean mass, and fat mass. Fasting blood samples were also taken to quantify cholesterol, triglycerides, high density lipoprotein (HDL) and low density lipoprotein (LDL). Results. The results obtained show that of the 165 students, 10.3% were underweight, 13.93% were overweight and 0.6% were obese. With regards to gender, 4.8% of the men and 9% of the women were overweight, 3% of the men and 7.2% of the women were underweight, and 0.6% of the women were obese. The blood chemistry showed that 30% had hypercholesterolemia, 18% hypertriglyceridemia, 17% reported low HDL levels and 67% reported high LDL levels. Of all the cases studied, 40% are at risk of a metabolic syndrome. 60% claimed not to practice any physical activity - especially women who reported 44.70%. Conclusions. These findings have allowed us at the institution to implement a culture of healthy habits. The have also allowed us to identify students with risk factors for type 2 diabetes and metabolic syndrome. This is why the cardio- metabolic monitoring and control based on healthy eating and physical activity are important.
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 2021, 72, 1; 89-94
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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