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    Wyświetlanie 1-9 z 9
    Tytuł:
    Point-Contact Spectroscopy of Crystalline Electric Field of Heterocontacts $PrB_6$ and $NdB_6$ with Pt
    Autorzy:
    Vasil'ová, M.
    Pristáš, G.
    Reiffers, M.
    Flachbart, K.
    Rusz, J.
    Shitsevalova, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813641.pdf
    Data publikacji:
    2008-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.47.Np
    71.70.Ch
    74.50.+r
    Opis:
    Point-contact spectra of single crystals $PrB_6$ and $NdB_6$ are presented. We observed maxima connected with crystalline electric field excitations in agreement with previous results for applied voltage V>8 mV. Moreover, we observed maxima at 6 mV $(PrB_6)$ and 3 mV $(NdB_6)$, which are probably connected with phonon modes. Moreover, we observed phonon peak at 10.6 mV in $PrB_6$. Further measurements in magnetic fields and crystalline electric field calculations are necessary.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 1; 267-270
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of biofilm formation by Staphylococcus aureus and Staphylococcus epidermidis strains isolated from sheep milkusing three diagnostic methods
    Autorzy:
    Vasil’, M.
    Farkasóvá, Z.
    Elečko, J.
    Illek, J.
    Zigo, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087866.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    biofilm production
    Congo Red agar
    Microtitre Plate
    genes coding for biofilm
    PCR
    Źródło:
    Polish Journal of Veterinary Sciences; 2017, 4; 795-801
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of effect of parenteral and oral supplementation of Selenium and vitamin E on selected antioxidant parameters and udder health of dairy cows
    Autorzy:
    Vasiľ, M.
    Zigo, F.
    Farkašová, Z.
    Pecka-Kielb, E.
    Bujok, J.
    Illek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/16539105.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    dairy cows
    calving
    colostrum
    glutathione peroxidase
    milk malondialdehyde
    mastitis
    Opis:
    The aim of this study was to compare the effect of parenteral and oral supplementation of Selenium (Se) and vitamin E (VTE) on selected antioxidant parameters in blood and colostrum as well as their effect on the incidence of mastitis in dairy cows during the final phase of gravidity (6 weeks) and first two weeks after calving. For the practical part of the study 36 dairy cows of Slovak pied breed in the second to fourth lactation-gestation cycle were selected. The animals weredivided into three groups: the control (C) and two experimental groups (D1 and D2). The selected groups were treated as follows: in group D1 products containing Se (Selevit inj.) and vitamin E (Erevit sol. inj.) were administered intramuscularly twice, six and three weeks prior to parturition; in group D2 a vitamin-minerals supplement in the form of sodium selenite (Na2SeO3) and dl-α-tocopherol acetate were supplemented orally for six weeks calving. The blood samples were collected from the vena jugularis in dairy cows approximately 42 days before calving (control sampling), on parturition day, and the 14th day after calving. Higher concentrations of Se and VTE were found in the blood plasma samples of both experimental groups collected on the day of parturition. In addition, the orally supplemented group (D2) showed higher Se and α-tocopherol concentrations in blood plasma on the14th day after calving as well a reduction of occurrence of mastitis by about 25 % compared to the control group. The relationship between inflammatory response and oxidative stress was also confirmed. The concentrations of milk malondialdehyde indicating lipid peroxidation during mastitis were significantly higher in milk samples from infected cows than in milk samples from healthy animals in each monitored group. In order to prevent oxidative stress and moderate inflammatory response in dairy cows it is very important to optimally balance their nutritive needs with an appropriate ratio of Se and VTE supplements. Therefore we still recommend supplementation of the cows’ postpartum dietwith 0.5 mg of Se/kg dry matter (DM) and 102 mg of dl-α-tocopherol acetate/kg DM to stabilize their optimal blood levels, stimulate the activity of glutathione peroxidase and reduce the incidence of mastitis.
    Źródło:
    Polish Journal of Veterinary Sciences; 2022, 25, 1; 155-164
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of udder infections with Staphylococcus xylosus and Staphylococcus warneri on the composition and physicochemical changes in cows milk
    Autorzy:
    Vasil, M.
    Pecka-Kielb, E.
    Elecko, J.
    Zachwieja, A.
    Zawadzki, W.
    Zigo, F.
    Illek, J.
    Farkasova, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/32101.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The aim of this study was an evaluation of the effects of two species of coagulase negative staphylococci (CNS), Staphylococcus xylosus and Staphylococcus warneri, on the changes in technological parameters of cows’ milk. The study was conducted in a herd of Slovak Pied cattle breed (with share of HF blood). Based on the performance results from three subsequent months, cows in the 2nd and 3rd lactation with SCC up to 200 thousand/ml (8 heads, 32 quarters), and above 800 thousand/ml (8 heads, 32 quarters), after the 4th month of lactation, were selected. The samples were subjected to microbiological analysis, total bacteria count, somatic cell count; basic milk composition and physicochemical properties were also examined. The research has found the impact of bacterial infection on the increasing (p<0.05) of the number of somatic cells and a decrease (p<0.01) in protein levels in milk due to both types of staphylococci. There was a significant (p<0.05) reduction in C8: 0, C10: 0 and the total amount of saturated fatty acids in the milk of the infected cows in comparison to the healthy ones. The research also revealed higher (p<0.01) levels of C14: 0 and C20: 1 in milk from the healthy cows.
    Źródło:
    Polish Journal of Veterinary Sciences; 2016, 19, 4
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Limited genetic diversity of Aerococcus viridans strains isolated from clinical and subclinical cases of bovine mastitis in Slovakia
    Autorzy:
    Spakova, T.
    Elecko, J.
    Vasil, M.
    Legath, J.
    Pristas, P.
    Javorsky, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/31338.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The Aerococcus viridans isolates from bovine mastitis in Slovakia were isolated and characterized by classical microbiological and biochemical, and molecular techniques including IGS-PCR and rep-PCR, ARDRA and 16S rDNA gene sequencing. The substantial variability of antibiotic resistance patterns was observed. The majority of strains were resistant to beta-lactam antibiotics, the resistance to tetracycline was observed in 3 tested strains, resistance to lincomycin was found in 4 strains and practically all tested strains were sensitive to neomycin and ciprofloxacin. While variable at a phenotypic level, no significant genetic variability among A. viridans isolates was detected by molecular DNA based methods. The data obtained suggest that a few A. viridans strains spread among cow's population in Slovak farms.
    Źródło:
    Polish Journal of Veterinary Sciences; 2012, 15, 2
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prakticheskaja realizacija raschetov na stojjkost' k progressirujushhemu obrushheniju zhilogo kompleksa v g.Simferopol' na baze chislennogo modelirovanija nesushhikh sistem
    Practical implementation of payments of resistance to progressive collapse of apartment complex in simferopol based on numerical simulation of bearing systems
    Autorzy:
    Pushkarjov, B.
    Vasil'ev, M.
    Koren'kov, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/77342.pdf
    Data publikacji:
    2014
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    practical implementation
    payment
    collapse
    apartment
    building
    accident
    vitality
    numerical simulation
    Źródło:
    Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 5
    1730-8658
    Pojawia się w:
    Motrol. Motoryzacja i Energetyka Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An effect of mammary gland infection caused by Streptococcus uberis on composition and physicochemical changes of cows’ milk
    Autorzy:
    Pecka-Kielb, E.
    Vasil, M.
    Zachwieja, A.
    Zawadzki, W.
    Elecko, J.
    Zigo, F.
    Illek, J.
    Farkasova, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/31243.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    An effect of mammary gland infection caused by Streptococcus uberis on the changes in cows’ milk composition and its physicochemical properties was examined. The study was conducted in the herd of Slovak Pied breed cattle (with a share of HF blood), in 2nd and 3rd lactation, after 4th month of milking. Milk samples were collected from a quarter milking. The samples were subjected to microbiological analysis, basic milk composition, total bacteria count, somatic cell count and physicochemical properties were examined. Also analyses of protein fractions share and fatty acids profile were conducted. An effect of bacterial infection of the mammary gland bring an increase (P<0.01) in somatic cell count was observed in this study. Milk samples contaminated with S. uberis were characterized by higher (P<0.05) total bacteria count and total protein compared to milk samples collected from non-infected mammary gland. The level of κ-casein was significantly (P<0.05) decreased in cows with subclinical mastitis caused by S. uberis. Significant (P<0.05) reduction in the share of C13:0 acid, and an increased level of C18:0, C18:1n7t and CLA were observed in milk contaminated with S. uberis compared to healthy cows’ milk. It should be concluded that S. uberis causes the increase in total bacteria count, SCC and the decrease in κ-casein level, which significantly affects deterioration of technological quality of cows’ milk.
    Źródło:
    Polish Journal of Veterinary Sciences; 2016, 19, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on the Impact of Activators in the Presence of an Inhibitor on the Dynamics of Carbon Dioxide Absorption by Chlorophyll-Synthesizing Microalgae
    Autorzy:
    Dyachok, Vasil V.
    Mandryk, Solomiia T.
    Huhlych, Sergii I.
    Slyvka, Maria M.
    Powiązania:
    https://bibliotekanauki.pl/articles/123617.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    carbon
    phosphorus
    nitrogen
    sulfur oxide
    microalgae
    inhibitor
    activator
    Opis:
    The work demonstrates the suppression of the inhibiting effect of the carbon dioxide absorption process by chlorophyll-synthesizing Chlorella microalgae due to sulfur oxide SO2, activators of phosphorus oxide P2O5 and nitrogen oxides NxOy The research presents the experimental dependences of the dynamics of СО2 absorption by microalgae under the critical concentration of inhibitor SO2 in the presence of the P2O5 and NxOy activators. The authors devised the mathematic models of growth of the Chlorella microalgae population depending on the concentration of the phosphorus oxide and nitrogen oxides activators under a permanent concentration of the sulfur oxide inhibitor. The research determined an optimal total concentration of P2O5 activator in the presence of the SO2 inhibitor, as well as an optimal total concentration of the NO2 activator in the presence of the SO2 inhibitor.
    Źródło:
    Journal of Ecological Engineering; 2020, 21, 5; 189-196
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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