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    Wyświetlanie 1-3 z 3
    Tytuł:
    Information Exchange Automation in Maritime Transport
    Autorzy:
    Pietrzykowski, Z.
    Banaś, P.
    Wójcik, A.
    Szewczuk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/116246.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    maritime transport
    Information Exchange
    safety at sea
    Information Technology (IT)
    Intelligent Communication
    Automatic Communication
    IHO S-100
    e-Navigation
    Opis:
    To ensure the safety of maritime transport the access to information must be provided through a commonly used services. However, an equally important task is to determine or agree on interpretation of incoming data and assessment of a current and predicted navigational situation and, in further step, intentions of the participants in the transport process. Thanks to the standardization of information format, automatic information exchange gets increasingly wider. Another step ahead is automatic interpretation of information and automation of negotiation processes - intelligent communication. Rapid development of IT and ICT technologies creates such opportunities. This article presents the results of research on a system of automatic communication and co-operation in maritime transport.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 2; 189-193
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of supplementing selenized yeast to ewes from an organic farm on serum Se concentration in lambs
    Autorzy:
    Pilarczyk, B.
    Szewczuk, M.
    Pilarczyk, R.
    Tomza-Marciniak, A.
    Marciniak, A.
    Dobrzański, Z.
    Bąkowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/962847.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Opis:
    Our objective has been to determine the effect of supplementing selenized yeast to ewes kept on a poor diet, composed of fodder from periodically flooded meadows, on the reproductive results of ewes and the serum Se concentration in lambs, their body weight and daily weight gain. The study involved 25 ewes and 25 lambs, which were divided into two groups: experimental (12 ewes) and control (13 ewes). Their lambs were also assigned to different groups. Prior to supplementation, all the sheep from the two groups were analysed for selenium concentrations in the serum. The serum selenium concentrations were determined fluorometrically using a DAN and Shimadzu RF-5001 PC spectrofluorometer. The excitation wavelength was 376 nm, while the fluorescence emission wavelength was 518 nm. All sheep in the analysed flock were found to be selenium deficient. The supplementation of selenized yeast to the experimental group caused an almost 2.5-fold increase in the serum selenium concentration in the ewes. Lambs from the experimental group were characterized by a significantly higher concentration of selenium at 7 and 14 days of age (P ≤ 0.05) compared to control lambs. Very high (P < 0.001) positive correlations were found between the serum selenium concentration in Se-supplemented ewes and the serum selenium concentration in their lambs at 7 days (rx,y = 0.779) and 14 days of age (rx,y = 0.774). The enrichment of ewes’ diet with selenized yeast contributed to an increase in the serum selenium concentration in their lambs. However, only 14.29% of lambs achieved optimum levels of Se on day 7 after birth. At day 14 after birth, none of the lambs reached the optimum Se concentration. The serum selenium concentration in sheep can be a good indicator of the body’s supply with this element in adult sheep and of a possible selenium status in their offspring. On organic farms, the selenium content in sheep should be monitored constantly.
    Źródło:
    Journal of Elementology; 2016, 21, 4
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamic model with reaction nodes of tracked agricultural tractor
    Model dynamiczny z ogniwami reakcyjnymi układu napędowego ciągnika gąsienicowego
    Autorzy:
    Godżajew, Z. A.
    Liaszenko, M. W.
    Szechowcow, W. W.
    Szewczuk, W. P.
    Sokołow-Dobriew, N. S.
    Michałowski, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/244389.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    ciągnik gąsienicowy
    układ napędowy
    model matematyczny
    obciążenia dynamiczne
    tracked tractor
    transmission system
    mathematical model
    dynamic loads
    Opis:
    In the paper there were described assumptions and methodology of building the mathematical model of the transmission system of tracked agricultural tractor. There was presented model including 34 mass elements jointed by elasto-damping elements. As a result of calculations were estimated parameters of those elements basing on measurements of real object as well as were formulated differential equations of movement taking into account the underslung working equipment. As well were described the method of modelling transmission components, especially taking into consideration reaction moments between elements transmitting power and the chassis of the tractor. There was presented the way of defining the course of engine torque and estimated the main harmonics, with ultimate influence on dynamic loads of transmission. In the range of examination of the transmission operating loads, model takes into account the inputting changes of clutch friction torque during switching it on and off. Model gives ability to analyze the dynamic loads of transmission system depending on clutch slide. Model also allows existing clearances, what gives the possibility of analysis of abrasive wear influence on functioning of the transmission. Model enables the simulation of turning mechanism brakes operation during manoeuvring movement of the tractor.
    Źródło:
    Journal of KONES; 2007, 14, 4; 101-112
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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