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Wyświetlanie 1-9 z 9
Tytuł:
Prevalence of Salmonella spp. in broiler chicken flocks in northern Poland in 2014–2016
Autorzy:
Witkowska, D.
Kuncewicz, M.
Żebrowska, J.P.
Sobczak, J.
Sowińska, J.
Powiązania:
https://bibliotekanauki.pl/articles/2081943.pdf
Data publikacji:
2021
Wydawca:
Instytut Medycyny Wsi
Tematy:
Salmonella
broiler chicken
northern Poland
Opis:
Zoonotic serotypes of Salmonella enterica subsp. enterica are an important biological factor that poses a threat to public health, and broilers are often asymptomatic carriers of these bacteria. The aim of this study was to analyze the prevalence of Salmonella spp. and Salmonella serotypes in broiler chicken flocks in northern Poland in 2014–2016. The study was conducted on commercial flocks monitored by the Institutes of Veterinary Hygiene in Gdańsk and Olsztyn in 2014–2016. A total of 4,331 samples were investigated. Identification of Salmonella spp. was performed by a culture-dependent method followed by biochemical and serological confirmation tests, in accordance with Polish Standards. The total percentage of infected flocks in northern Poland reached 1.57%. The prevalence of Salmonella spp. in broiler chickens decreased from 2.19% in 2014 to 1.22% in 2016. The percentage of flocks infected with S. Enteritidis and S. Typhimurium was 1.18% and 0.12%, respectively (S. Enteritidis and S. Typhimurium were detected in 1.29% of flocks). The most common serotypes that had not been covered by the control programme were S. Mbandaka (0.14%), S. Infantis (0.07%) and, sporadically, S. Kentucky and S. Anatum. The percentage of infected flocks was higher (by 0.26%) in the Pomeranian Region than in the Region of Warmia and Mazury, and it increased over the analyzed period – the highest number of positive samples were found in 2016 (2.04%). In the Region of Warmia and Mazury, the percentage of infected flocks was highest in 2014 (3.08%); in 2014–2016, the number of positive samples decreased steadily to reach 0.41% in 2016. In the analyzed regions, the incidence of human salmonellosis was correlated with the percentage of infected broiler flocks.
Źródło:
Annals of Agricultural and Environmental Medicine; 2018, 25, 4; 693-697
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of calcium peroxide (CaO2) addition to poultry litter on the parameters of its physicochemical, microbiological and fertilising quality
Autorzy:
Mituniewicz, T.
Piotrowska, J.
Sowińska, J.
Mituniewicz, E.
Iwańczuk-Czernik, K.
Wójcik, A.
Powiązania:
https://bibliotekanauki.pl/articles/962814.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
The quality of litter is an important environmental factor in poultry houses. Its proper physicochemical properties have a positive impact on poultry house microclimate and indirectly on poultry farm surroundings as well. Commercial preparations available on the market which disinfect and reduce losses of mineral compounds (primarily nitrogen) in litter are relatively expensive, and thus they are not widely used. Therefore, it is necessary to look for a cheaper option, such as CaO2 addition seems to be. The research was carried out in farm conditions in two poultry houses, in each of which approximately 21 000 Ross 308 broiler chickens were reared. In order to maintain good physicochemical parameters of litter throughout the broiler chicken rearing time, the researchers applied (before bringing in the birds) a single CaO2 addition in the amount of 2 g per 1 m2 of poultry house floor area. During the 6-week chicken rearing period, the following parameters were monitored: temperature, relative humidity and pH value of the litter top layer. The total count of aerobic mesophilic bacteria and the total count of yeasts and moulds were estimated in the litter. Moreover, the content of mineral compounds (N, P, K, Mg, Ca) in fresh litter mass was checked in the 1st, 3rd and 6th week. The results prove that calcium peroxide application has no negative impact on the examined physicochemical parameters of litter (especially on temperature). The addition of calcium peroxide to poultry litter also influenced the stabilization of litter microflora. The content of examined mineral compounds in experimental poultry house litter, which was increasing with chicken rearing time, as shown in the experiment, proved the improving fertilising value of the produced manure. Moreover, due to the slow CaO2 decomposition, it is sufficient to apply it only once during a 6-week broiler chicken production cycle.
Źródło:
Journal of Elementology; 2016, 21, 4
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of fluid motion inside partially filled container which is moving in unsteady way
Analiza numeryczna zachowania się cieczy wewnątrz częściowo wypełnionego zbiornika poruszającego się ruchem nieustalonym
Autorzy:
Sowińska, M.
Piechna, J.
Powiązania:
https://bibliotekanauki.pl/articles/139566.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sloshing phenomenon
center of gravity motion
spectrum of unsteady force load
zjawisko przelewania
zmiany położenia środka ciężkości
widmo obciążenia nieustalonymi siłami
Opis:
The paper describes the behavior of the liquid in a container that moves with a constant speed along a track consisting of three arcs. Such a complicated track shape generates complex form of inertia forces acting on the liquid and generates the sloshing effect. The behavior of the tank container vehicle is affected by the time-dependent inertia forces associated with the transient sloshing motion of the liquid in the non-inertial frame. These internal excitations, acting on a tank construction, can cause a loss of stability of the vehicle. For that reason, the authors analyze the dynamic loads acting on the walls of the tank truck container. The variation of the position of the liquid cargo gravity center, that depends on the filling level of the container, is also analyzed. The simulations were performed according to the varying fill level, which was 20%, 50% and 80% of a liquid in the whole tank volume. The simulations were carried out for a one-compartment container. Another aim of this study was the investigation of the influence of container division (tank with one, two and three compartments) on behavior of the liquid. These simulations considered only the half-filled container which was treated as a dangerous configuration prohibited by the law regulations for one-compartment tank. The results of simulation are presented in the form of visualization of temporary liquid free surface shape, variation of forces and moments, as well as frequency analysis. The results of simulation were analyzed, and some general conclusion were derived, providing the material for future investigation and modifications of the law regulations.
Artykuł opisuje zachowanie się cieczy wewnątrz zbiornika, który porusza się ze stałą prędkością wzdłuż toru składającego się z trzech łuków. Na zachowanie zbiornika cysterny mają wpływ siły zależne od czasu związane z nieustalonym ruchem cieczy w układzie nieinercjalnym. Wewnętrzne wymuszenia działające na konstrukcję zbiornika mogą spowodować utratę stabilności pojazdu. Z tego powodu w artykule przeanalizowano obciążenia dynamiczne działające na ściany zbiornika pojazdu cysterny, a także zmianę położenia środka ciężkości przewożonej cieczy, w zależności od stopnia napełnienia zbiornika. Symulacje zostały przeprowadzone dla różnych stopni napełnienia przewożonym ładunkiem, tj. 20%, 50% i 80% cieczy w całkowitej objętości zbiornika. Dla tych stopni napełnienia rozpatrywano zbiornik jednokomorowy. Kolejnym celem badań było sprawdzenie wpływu podziału zbiornika (na jedną, dwie i trzy komory) na zachowanie się cieczy wewnątrz zbiornika. W tym przypadku rozważano zbiornik wypełniony cieczą w połowie, co uważane jest jako niebezpieczny stopień napełnienia zabroniony według regulacji prawnych dotyczących przewozu materiałów w cysternach ze zbiornikiem jednokomorowym. Wyniki symulacji zostały przedstawione w postaci kształtów powierzchni swobodnej, przebiegu sił i ich momentów działających na ściany zbiornika a także analizy częstotliwościowej tych sygnałów. Wyniki zostały przeanalizowane i na ich podstawie wyciągnięto wnioski, które dają podstawę do dalszych badań w tym temacie i dyskusji nad możliwymi zmianami w regulacjach prawnych dotyczących przewozu cieczy w cysternach.
Źródło:
Archive of Mechanical Engineering; 2015, LXII, 4; 477-508
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Yielding and biological value of garlic chives (Allium tuberosum Rottl. ex Spreng.) depending to the type of mulch
Autorzy:
Adamczewska-Sowinska, K.
Turczuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/1189825.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
yielding
biological value
garlic chive
Allium tuberosum
mulch type
macroelement
carotenoid
vitamin C
polyethylene foil
biodegradable foil
miscanthus
Opis:
Owing to their high nutritional value and medicinal properties, garlic chives, a representative of the genus Allium, are a valuable vegetable. The edible parts are green leaves and young stalks with flower buds and the bulbs. Allium tuberosum, known as garlic chives, Chinese chives or Oriental garlic, is a perennial species, adapted to a moderate climate. Of special concern is the fact that this species is readily infested by weeds, especially when grown on the same stand for many years. One possible measure to combat weed infestation is mulching. The aim of our study has been to make an assessment of the effect of mulching on yielding and biological value of Oriental garlic in the second and third year of its growth. The mulches used in the experiment were black and white polyethylene foil, black polypropylene agrotextile, black biodegradable foil and miscanthus chaff. The research results proved that the leaf yield significantly increased in the subsequent years of plant cultivation. The highest leaf yield from garlic chives was obtained on the plots mulched with black polypropylene agrotextile, black polyethylene foil and black biodegradable foil. Two-year-old plants contained significantly more dry matter, chlorophyll, carotenoids and potassium but less of nitrates. Mulching with white polyethylene foil considerably favoured the accumulation of dry matter, carotenoids, phosphorus, potassium and nitrates by garlic chives
Źródło:
Journal of Elementology; 2016, 21, 1; 7-19
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Yielding and biological value of garlic chives (Allium tuberosum Rottl. ex Spreng.) depending to the type of mulch
Autorzy:
Adamczewska-Sowinska, K.
Turczuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/15994.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
yielding
biological value
garlic chive
Allium tuberosum
mulch type
macroelement
carotenoid
vitamin C
polyethylene foil
biodegradable foil
miscanthus
Opis:
Owing to their high nutritional value and medicinal properties, garlic chives, a representative of the genus Allium, are a valuable vegetable. The edible parts are green leaves and young stalks with flower buds and the bulbs. Allium tuberosum, known as garlic chives, Chinese chives or Oriental garlic, is a perennial species, adapted to a moderate climate. Of special concern is the fact that this species is readily infested by weeds, especially when grown on the same stand for many years. One possible measure to combat weed infestation is mulching. The aim of our study has been to make an assessment of the effect of mulching on yielding and biological value of Oriental garlic in the second and third year of its growth. The mulches used in the experiment were black and white polyethylene foil, black polypropylene agrotextile, black biodegradable foil and miscanthus chaff. The research results proved that the leaf yield significantly increased in the subsequent years of plant cultivation. The highest leaf yield from garlic chives was obtained on the plots mulched with black polypropylene agrotextile, black polyethylene foil and black biodegradable foil. Two-year-old plants contained significantly more dry matter, chlorophyll, carotenoids and potassium but less of nitrates. Mulching with white polyethylene foil considerably favoured the accumulation of dry matter, carotenoids, phosphorus, potassium and nitrates by garlic chives
Źródło:
Journal of Elementology; 2016, 21, 1
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of plastic and biodegradable mulch films in field tomato cultivation
Autorzy:
Adamczewska-Sowińska, K.
Turczuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/12198328.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
The yield quantity and quality depend on genetic factors, cultivation system and environmental conditions. Growth conditions can be improved by mulching the soil with plastic and biodegradable materials. A 2-factor experiment was conducted in 2011–2013 in the Wroclaw University of Environmental and Life Sciences. The method of random blocks in 3 repetitions was applied. The aim of the study was to compare the yielding of tomato cultivars: Awizo F1, Brixol F1 and Polonaise F1 on synthetic mulches: transparent, black and white polyethylene film (0.05 mm thick), on black polypropylene nonwoven of the mass of 60 g·m-2, and on biodegradable film BioAgri, 0.025 mm thick. Significant differences were observed in the quantity of marketable tomato yield in particular years of the experiment. In most favorable year 2012, the yield was by 26% and 56% larger, as compared to other years. The marketable yield of Awizo F1 cultivar was higher, on average by 33.1% and 64.7%, than in the case of Brixol F1 and Polonaise F1. The plants mulched with polyethylene and biodegradable film revealed a tendency to a higher yields as compared to those cultivated on nonwoven or without any mulches.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 5; 123-133
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The most commonly used diet supplements for hair, skin and nails in the opinion of pharmacy employees from different cities in Poland
Najczęściej stosowane suplementy diety na włosy, skórę i paznokcie w opinii pracowników aptek z różnych miast na terenie Polski
Autorzy:
Jachimowicz-Rogowska, K.
Sowińska, L.
Winiarska-Mieczan, A.
Kolasa, K.
Fabjanowska, J.
Powiązania:
https://bibliotekanauki.pl/articles/29433481.pdf
Data publikacji:
2022
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Źródło:
Nauki Inżynierskie i Technologie; 2022, 1(38); 6074
2449-9773
2080-5985
Pojawia się w:
Nauki Inżynierskie i Technologie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Importance Of Surface Topography For The Biological Properties Of Nitrided Diffusion Layers Produced On Ti6Al4V Titanium Alloy
Znaczenie topografii powierzchni dla biologicznych właściwości warstw azotowanych dyfuzyjnie wytwarzanych na stopie tytanu Ti6Al4V
Autorzy:
Wierzchoń, T.
Czarnowska, E.
Morgiel, J.
Sowińska, A.
Tarnowski, M.
Rogulska, A.
Powiązania:
https://bibliotekanauki.pl/articles/355494.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Ti6Al4V titanium alloy
glow discharge assisted nitriding
surface topography
wettability
blood platelets
stop tytanu TI6AL4V
proces azotowania jarzeniowego
topografia powierzchni
nasiąkliwość
płytki krwi
Opis:
Diffusion nitrided layers produced on titanium and its alloys are widely studied in terms of their application for cardiac and bone implants. The influence of the structure, the phase composition, topography and surface morphology on their biological properties is being investigated. The article presents the results of a study of the topography (nanotopography) of the surface of TiN+Ti2N+αTi(N) nitrided layers produced in low-temperature plasma on Ti6Al4V titanium alloy and their influence on the adhesion of blood platelets and their aggregates. The TEM microstructure of the produced layers have been examined and it was demonstrated that the interaction between platelets and the surface of the titanium implants subjected to glow-discharge nitriding can be shaped via modification of the roughness parameters of the external layer of the TiN titanium nitride nanocrystalline zone.
Dyfuzyjne warstwy azotowane na tytanie i jego stopach są szeroko badane m. in. w aspekcie zastosowań na implanty kardiologiczne i kostne. Stąd też analizowany jest wpływ struktury składu fazowego, topografii i morfologii powierzchni na ich właściwości biologiczne. W artykule przedstawiono wyniki badań wpływu topografii (nanotopografii) powierzchni warstw azotowanych –TiN+Ti2N+αTi(N) wytwarzanych w niskotemperaturowej plazmie na stopie tytanu Ti6Al4V na adhezję płytek krwi i ich aglomeratów. Omówiono mikrostrukturę (TEM) wytwarzanych warstw i wykazano, że poprzez stan chropowatości powierzchni zewnętrznej strefy warstwy azotowanej – nanokrystalicznego azotku tytanu (TiN) można kształtować oddziaływanie płytek krwi z powierzchnią implantów tytanowych poddanych procesowi azotowania jarzeniowego.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 3; 2153-2159
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intra-specific differentiation of Juniperus phoenicea in the western Mediterranean region revealed in morphological multivariate analysis
Autorzy:
Mazur, M.
Klajbor, K.
Kielich, M.
Sowinska, M.
Romo, A.
Montserrat, J.M.
Boratynski, A.
Powiązania:
https://bibliotekanauki.pl/articles/41181.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Opis:
The biometrical comparison of nine populations of Juniperus phoenicea from the western part of the species geographic range was the aim of the present study. Seven features of the cones and seeds, two of the shoots and leaves and eight proportions were studied biometrically and analysed using statistical methods. Two of analyzedpopulations, supposedto be representatives of J. phoenicea subsp. phoenicea, are closely related each other. The seven other populations representing J. phoenicea subsp. turbinata, appearedmuch more variable andd ifferedeach other at higher level. The results confirm the biochemical andgenetic differentiation of the species, however, it can partly be an effect of smaller number of comparedpopulations of subsp. phoenicea. The individuals included into each of distinguished subspecies are different and only a few individuals of subsp. turbinata from the Atlantic coast in Portugal were foundto be joinedinto the group of subsp. phoenicea. The differences between populations of subsp. turbinata are higher than between those of subsp. phoenicea. The most distant population of the subsp. turbinata, from Cabo Rizuto in Italy appears also the most different from all the other. It results probably from the isolation for a longer time.
Źródło:
Dendrobiology; 2010, 63
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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