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    Wyświetlanie 1-9 z 9
    Tytuł:
    Modelling of average exhaust pollutant emission intensity on a road
    Autorzy:
    Brzozowska, L.
    Brzozowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/242438.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    transport
    modelling
    traffic
    exhaust emission
    calculation of exhaust emission
    Opis:
    Traffic is a major source of pollutant emission in cities. In order to evaluate the air quality in urban areas it is necessary to use appropriate traffic flow and exhaust emission models. In air quality studies, the common approach of constant average emission intensity is used for describing emission along a whole road i.e. one road - one linear source. This approach can not be used in case of analysing local air pollution caused by traffic on roads between intersections and on roads with input or outputs. In the paper a method of dividing road on several segments is presented. Each segment represents linear source of emission. The method enables modelling of exhaust pollutant emission intensity taking into account its local changes. The average speed of traffic flow and density of vehicles is obtained from microscopic traffic flow model. Next, average exhaust pollutant emission intensity is calculated using the average emission factor method (European models COPERT or INFRAS can be applied). Some calculation results are presented in the paper as well. The algorithm of dividing road on segments using microscopic traffic flow model presented in the paper is a solution which enables more precisely identification of regions in which the exhaust emission is high and the permissible concentration of vehicle exhaust pollutant can be exceed.
    Źródło:
    Journal of KONES; 2009, 16, 2; 39-47
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of the conditions of shot peening the Inconel 718 nickel alloy on the geometrical structure of the surface
    Autorzy:
    Zaleski, K.
    Skoczylas, A.
    Brzozowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/102751.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    surface roughness
    shot peening
    Inconel 718
    Opis:
    This article presents the research results of roughness and topography of the surface of Inconel 718 nickel alloy after shot peening. The evaluation of stereometric properties of the surface layer of the examined material was performed based on the amplitude, height and Abbott-Firestone curve parameters. The shot peening was carried out on the impulse shot peening stand. The impact energy Ez, distance between the traces xs and the ball diameter dk were changed in the range: Ez = 60 ÷ 240 mJ, xs = 0,15 ÷ 0,5 mm, dk = 3,95 ÷ 12,45 mm. The T8000 RC 120-140 device of the Hommel-Etamic company, along with the software, was used for measuring the surface roughness and for determining the material bearing curve. As a result of the machining, the surface roughness was reduced and the selected functional parameters were improved.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 2; 205-211
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modifications in the trophic state of an urban lake, restored by different methods
    Autorzy:
    Grochowska, J.
    Brzozowska, R.
    Parszuto, K.
    Tandyrak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/960185.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Opis:
    The rapid acceleration of eutrophication calls for effective methods to reverse or at least decelerate this process and its consequences, such as phytoplankton blooms, deterioration of water transparency, loss of oxygen balance as well as nitrogen and phosphorus internal loading from bottom sediments. Many different restoration methods have already implemented in order to improve the quality of lake water in Poland and around the world. Science reports on lake restoration mostly present short-term results achieved with one method, sometimes with a combination of few technologies, methods. Noteworthy is the scarcity of longitudinal observations and descriptions of persisting changes in environmental conditions and trophic status after a lake restoration process. The aim of the study was to present long-term changes in the trophic status of an urban lake which were been achieved through artificial aeration with thermal destratification and phosphorus inactivation, based on water quality parameters and an analysis of biotic and abiotic conditions prevailing in this lake. The study was conducted on Długie Lake, situated in the town of Olsztyn. This lake had acted as a sink of raw domestic sewage (400 m3 day-1) for 20 years. After preliminary conservation operations, the lake was restored by the artificial circulation and phosphorus inactivation methods. Prior to the restoration effort, the lake had been classified as hypertrophic, with an average TSI index value of 79. The average chlorophyll a concentration was 63 μg l-1 and water transparency did not exceed 0.3 m. The implementation of two restoration methods improved the trophic level and the lake became mesotrophic. The improvement seems permanent, as the mean TSI index is 50 ten years since the termination of the restoration procedures.
    Źródło:
    Journal of Elementology; 2017, 22, 1
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Total RNA quality in boar spermatozoa with different freezability
    Autorzy:
    Fraser, L.
    Brym, P.
    Mogielnicka-Brzozowska, M.
    Wasilewska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087601.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    boar
    spermatozoa
    semen freezability
    RNA profiles
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 1; 181-185
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Acute phase response in the primiparous dairy cows after repeated percutaneous liver biopsy during the transition period
    Autorzy:
    Jawor, P.
    Brzozowska, B.
    Sloniewski, K.
    Kowalski, Z.M.
    Stefaniak, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/30733.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The aim of this study was to evaluate the acute phase response of dairy cows to repeated liver biopsy in order to estimate the safety of this procedure during the transition period. Liver biopsies (up to 1000 mg of liver tissue) were conducted twice a day, 7 days before expected parturition and 3 days after calving. The number of needle insertions for each biopsy was recorded and was dependent on the amount of obtained tissue. Blood samples were taken on day 7 before expected parturition, then on days 3, 4, 7 and 14 after calving. Body temperature was measured daily in all 30 cows from day 3 until day 14 after calving. The concentrations of haptoglobin, serum amyloid A, fibrinogen and interleukin-6 were determined in serum and plasma. In 16.7% of cows, the rectal body temperature rose by ≥ 0.5oC on the day after liver biopsy. Although the concentrations of haptoglobin, serum amyloid A and fibrinogen increased significantly after calving (p<0.01), there was no influence of the number of biopsies on the acute phase reaction and repeated biopsy during the transition period had no effect on body temperature. Therefore, the procedure may be regarded as safe for cows during the transition period.
    Źródło:
    Polish Journal of Veterinary Sciences; 2016, 19, 2
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The problem of Lyme borreliosis infections in urban and rural residents in Poland, based on National Health Fund data
    Autorzy:
    Brzozowska, M.
    Wierzba, A.
    Śliwczyński, A.
    Myśliwiec, M.
    Kozłowski, K.
    Wierzba, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/28762802.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2021, 28, 2; 277-282
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Why are dairy cows not able to cope with the subacute ruminal acidosis?
    Autorzy:
    Brzozowska, A M
    Sloniewski, K
    Oprzadek, J
    Sobiech, P.
    Kowalski, Z M
    Powiązania:
    https://bibliotekanauki.pl/articles/31813.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    One of the largest challenges for the dairy industry is to provide cows with a diet which is highly energetic but does not negatively affect their rumens’ functions. In highly productive dairy cows, feeding diets rich in readily fermentable carbohydrates provides energy precursors needed for maximum milk production, but simultaneously decreases ruminal pH, leading to a widespread prevalence of subacute ruminal acidosis. Maximizing milk production without triggering rumen acidosis still challenges dairy farmers, who try to prevent prolonged bouts of low ruminal pH mainly by proper nutrition and management practices. The animals try to avoid overeating fermentable feeds, as it causes negative consequences by disturbing digestive processes. The results of several experiments show that ruminants, including sheep and beef cattle, are able to modify some aspects of feeding behaviour in order to adjust nutrient intake to their needs and simultaneously prevent physiological disturbances. Particularly, such changes (e.g., increased preference for fibrous feeds, reduced intake of concentrates) were observed in animals, which were trying to prevent the excessive drop of rumen fluid pH. Thanks to a specific mechanism called “the postingestive feedback”, animals should be able to work out such a balance in intake, so they do not suffer either from hunger or from negative effects of over-ingesting the fermentable carbohydrates. This way, an acidosis should not be a frequent problem in ruminants. However, prolonged periods of excessively decreased rumen pH are still a concern in dairy cows. It raises a question, why the regulation of feed intake by postingestive feedback does not help to maintain stable rumen environment in dairy cows?
    Źródło:
    Polish Journal of Veterinary Sciences; 2013, 16, 4
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determinants of developing a pilot of coordinated care model for patients with multiple sclerosis in Poland
    Autorzy:
    Wiktorzak, K.
    Szfraniec-Byrylo, S.
    Jaworska, U.
    Brzozowska, M.
    Wierzba, W.
    Sliwczynski, A.
    Kurpas, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1664.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Opolski. Instytut Nauk o Zdrowiu
    Opis:
    Background: Multiple sclerosis is a chronic and highly debilitating disease with very high economic and social consequences. Designing changes to improve the functioning of the healthcare model primarily requires learning about the needs of beneficiaries. Aim of the study: The purpose of our study is the results’ description and summary of conclusions of the research conducted in the past years. These results are currently being used for the construction of a coordinated care model for MS patients. Material and methods: One questionnaire survey addressed to MS patients, carried out between 01.12.2013 and 01.02.2014 and the second one addressed to Polish and European medical professionals, carried out between 01.09.2016 and 04.10.2016 performed in 51 European centers and 2 branches of the Turkish Association of patients with MS. Results: In the first survey 84.4% patients declared that during the illness they received mental support mostly from their family: 48.5% received it from physicians; 42.1% from a nurse. 64.8% of the respondents declared that they received no support from social organizations and 77.6% received no support from religious organizations. According to the results of the survey for healthcare professionals in Poland and Europe, in 54.9% of the European institutions and in 22.4% of the Polish institutions, dedicated IT systems are used for processing MS patients’ data. Among institutions using IT, 52.9% of the European and 10.1% of the Polish ones keep the patient’s entire documentation, as well as a patient satisfaction survey, in an IT system. Conclusions: Based on our studies described above, the patients’ needs, resources and capabilities seem to indicate that the scale of system inefficiencies is such that remodeling care for this well-defined group of patients is justified and feasible.
    Źródło:
    Medical Science Pulse; 2019, 13, 2
    2544-1558
    2544-1620
    Pojawia się w:
    Medical Science Pulse
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of proteoforms of albumin and kallikrein in stallion seminal plasma and their correlations with sperm motility
    Autorzy:
    Mogielnicka-Brzozowska, M.
    Fraser, L.
    Dziekońska, A.
    Gackowska, K.
    Sobiewska, M.
    Kuzborska, A.
    Majewska, A.M.
    Filipowicz, K.
    Kordan, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087533.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    seminal plasma proteins
    albumins
    kallikreins
    stallion
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 2; 227-235
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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