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    Wyświetlanie 1-7 z 7
    Tytuł:
    Quality of life in peri- and post-menopausal Polish women living in Lublin Province - differences between urban and rural dwellers
    Autorzy:
    Zolnierczuk-Kieliszek, D.
    Kulik, T.B.
    Jarosz, M.J.
    Stefanowicz, A.
    Pacian, A.
    Pacian, J.
    Janiszewska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/49453.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Medycyny Wsi
    Opis:
    Introduction and objective: The quality of life in peri- and post-menopausal women constitutes a serious public health problem. The aim of this observational cross-sectional study was to reveal the influence of the permanent domicile on the quality of life of women in peri- and post-menopausal period, and to establish the influence of employment as a full-time agricultural worker on the quality of life in these women. Materials and methods: The research was carried out by means of a survey using the postal questionnaire technique. Three standardized questionnaires: WHOQOL-BREF, Women’s Health Questionnaire (WHQ) and SF-36 were used as research tools. An original questionnaire was also used. The study comprised a representative sample of the female population aged 45-65 living in Lublin Province. The sample size was 2,143 women. Results: The quality of the women’s life was significantly affected by the place of permanent residence. The worst quality of life was found in permanent country dwellers. City and town inhabitants revealed a considerably higher level of quality of life. Permanent place of residence in the country was an independent predictor of a poorer quality of life. Employment as a full-time agricultural worker was an independent predictor of a worse quality of life in the SOM domain of WHQ, as well as RP, RF and RE domains of SF-36. On the other hand, employment as a full-time agricultural worker was an independent predictor of a better quality of life in the SLE domain of WHQ, and psychological domain of WHOQFL-BREF. Conclusions: Awareness of the dependence is necessary in order to effectively plan health education and physical and social health promotion campaigns. Country dwellers need special attention in the process of undertaking any preventive or curative steps.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2012, 19, 1
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The method, based on storage simulator and IR – VIS spectroscopy, for predicting the allowable time of storage of biocomponents for CI engines
    Autorzy:
    Dzięgielewski, W.
    Kaźmierczak, U.
    Kulczycki, A.
    Okniński, R.
    Stefanowicz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/242434.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    fuel
    fuel aging
    oils
    lubrication
    biocomponents
    Opis:
    The paper presents the results of investigations concerning a new method used for predicting the allowable time of storage of biocomponents – FAME. The method was based on laboratory research carried out with the use of a storage tank simulator. The aging process was carried out in the conditions increasing the reaction rate – at high temperature. There are several methods/procedures used for predicting the allowable time of storage of fuels and biocomponents – FAME, but all of them are based on tests at the temperature so high that the mechanism of aging process is different than the one observed in storage tanks. It was assumed that the aging process could be divided into two stages: at the first stage, the aging precursors are created and at the second stage, precursors are converted into the fuel aging products. These products lead to changes in fuel properties. The kinetics of precursor creation determines the rate of all reactions, which lead to the final aging products. It was found that the rate of reaction at the first stage of fuel aging can be effectively increased by an increase in temperature and even relatively high temperature does not change the mechanism of the creation of aging precursors. The method that has been worked out makes it possible to control the mechanism of aging process during quick laboratory tests. The products of aging processes were detected with the use of the IR-VIS spectrometry. The allowable time of storage was determined for several FAME samples on the basis of quick laboratory tests. The results of laboratory quick tests were verified by comparing them with the results of the aging process of FAME in storage tanks. On the basis of the test results, the algorithm of allowable time of FAME storage calculation was worked out.
    Źródło:
    Journal of KONES; 2016, 23, 1; 115-121
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The new stand for aging of biocomponents and biofuels process testing at relatively short time
    Autorzy:
    Dzięgielewski, W.
    Kaźmierczak, U.
    Kulczycki, A.
    Okniński, R.
    Stefanowicz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/949517.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    biofuels
    biocomponents
    ageing process
    test bench
    method of measuring
    Opis:
    In the paper, the concept of a model bench for accelerated ageing of bio-components and biofuels was presented. It is used to simulate the ageing process of biofuels and components of vegetable or animal origin, taking place during storage in the storage tanks. The construction of the bench’s essential elements and its equipment were designed and implemented in such a way as to mostly reflect actual storage conditions in large capacity tanks. An additional and unprecedented function of the bench includes the possibility to simulate the product transport conditions. Furthermore, a method of the test, with the use of simultaneously performed traditional tests on the physical and chemical properties monitored in the process of storage was presented. An analysis of the relation between values of the parameters obtained with different methods (on the model bench and under laboratory conditions) was conducted. In addition, their usefulness to assess the impact of logistic processes on the product quality was presented. In the paper, the results of the work executed within the framework of the project “Development of a prototype of the monitoring system the ageing rate and degree of bio-components and biofuels” within the Program Innovative Economy Operational Programme, Measure 1.4. “Support for goal-oriented projects” were used.
    Źródło:
    Journal of KONES; 2016, 23, 2; 105-112
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cytotoxic activity of Paris quadrifolia extract and isolated saponin fractions against human tumor cell lines
    Autorzy:
    Stefanowicz-Hajduk, J.
    Kawiak, A.
    Gajdus, J.
    Ochocka, J.R.
    Paszkiewicz, M.
    Stepnowski, P.
    Lojkowska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/19872.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Steroidal saponins isolated from many plant species belonging to Monocotyledones display potent cytotoxic activity towards many human tumor cells. We examined the cytotoxic effects of crude Paris quadrifolia extract for the first time, testing isolated saponin-rich fractions against four different human cell lines using the [(3-(4,5- dimethylthiazol-2-yl)]-2,5-diphenyltetrazolium bromide (MTT) assay. Cytotoxic activity was tested against human promyelocytic leukemia (HL-60) cells, human cervical adenocarcinoma (HeLa) cells and human breast cancer (MDA-MB-468) cells. Human skin fibroblasts were used as non-neoplastic control cells. Our results show significant activity of the weakly water-soluble solid residue and butanolic fraction against HL-60 and HeLa cells. The solid residue exerted cytotoxicity against all tested cell lines.
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2011, 53, 2
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nutritional habits of perinatal women for consumption of butter and margarine
    Zwyczaje zywieniowe kobiet w okresie okoloporodowym w zakresie spozycia masla i margaryny
    Autorzy:
    Wadolowska, L.
    Przybylowicz, K.
    Trzaskowska, M.A.
    Cichon, R.
    Kozikowski, W.
    Klobukowski, J.
    Stefanowicz, M.
    Romaszko, E.
    Malarkiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1373146.pdf
    Data publikacji:
    1997
    Wydawca:
    Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
    Tematy:
    maslo
    okres okoloporodowy
    tluszcze jadalne
    nawyki zywieniowe
    spozycie zywnosci
    kobiety
    margaryna
    zywienie czlowieka
    Opis:
    The nutritional habits of perinatal women for consumption of butter and margarine were determined. The study was performed on 231 women by collecting the information about both the consumption of fats used as bread spreads or dish and culinary additives, and the amount of margarine consumed regularly for spreading on bread. The correlation between the nutritional habits and selected socio-economical factors such as place of residence, education, occupation and declared economical status, was analysed. Margarines were found to be used commonly for spreading on bread and were more often used for preparing cakes and cake fillings than butter. These two fats were thus recognized as the most important sources of trans fatty acid isomers taken by the studied women. No correlation was found between the intake of margarine as bread spread and examined socio-economical factors. High consumption of margarines by perinatal women should be considered alarming because of the possibility for the incidence of trans fatty acid isomers in breast milk in the amounts that are danger for the health of their children.
    Określono zwyczaje żywieniowe kobiet w okresie okołoporodowym w zakresie spożycia masła i margaryny. Badaniami objęto 231 kobiet zbierając informacje o spożyciu tłuszczów stosowanych do smarowania pieczywa, dodawanych do potraw i stosowanych w procesach kulinarnych oraz określając ilość zwyczajowo spożywanych margaryn stosowanych do smarowania pieczywa. Analizie poddano współzależność rozpatrywanych cech odżywiania z wybranymi czynnikami socjoekonomicznymi, tj. miejscem zamieszkania, wykształceniem, rodzajem wykonywanej pracy i deklarowaną sytuacją materialną. Stwierdzone powszechne stosowanie margaryn do smarowania pieczywa oraz w porównaniu z masłem ich szersze wykorzystanie do wypieku ciast i przygotowywania kremów pozwoliło uznać te dwa źródła za najistotniejsze w spożyciu trans izomerów kwasów tłuszczowych przez badane kobiety (rys. 1,4,5,6). Nie stwierdzono współzależności pomiędzy spożyciem margaryn do smarowania pieczywa a rozpatrywanymi czynnikami socjoekonomicznymi (tab.1). Wykazano wysokie spożycie margaryn przez badane kobiety w okresie okołoporodowym uznając je za niepokojące z uwagi na możliwość pojawienia się trans izomerów kwasów tłuszczowych w mleku kobiecym w ilościach stwarzających zagrożenie dla zdrowia ich dzieci.
    Źródło:
    Polish Journal of Food and Nutrition Sciences; 1997, 06, 1; 127-136
    1230-0322
    2083-6007
    Pojawia się w:
    Polish Journal of Food and Nutrition Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two-Probe Measurements of Electron Transport in GaN:Si/(Ga,Mn)N/GaN:Si Spin Filter Structures
    Autorzy:
    Kalbarczyk, K.
    Foltyn, M.
    Grzybowski, M.
    Stefanowicz, W.
    Adhikari, R.
    Li, Tian
    Kruszka, R.
    Kamińska, E.
    Piotrowska, A.
    Bonanni, A.
    Dietl, T.
    Sawicki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398574.pdf
    Data publikacji:
    2016-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    72.25.Dc
    73.40.Cg
    73.43.Qt
    78.55.Cr
    Opis:
    Results of two-probe magnetoresistance studies in GaN:Si/(Ga,Mn)N/GaN:Si prospective spin filter structures are reported. It is postulated that transport characteristics are strongly influenced by highly conductive threading dislocations and that shrinking of the device size partially mitigates the issue. Simultaneously, maxima at ≈1500 Oe on overall weak, up to 2%, negative magnetoresistance are seen at low temperature, whose origin has been tentatively assigned to effects taking place at the contacts areas.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 5; 1196-1198
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetooptical Properties of (Ga,Fe)N Layers
    Autorzy:
    Papierska, J.
    Rousset, J.
    Pacuski, W.
    Kossacki, P.
    Golnik, A.
    Nawrocki, M.
    Gaj, J.
    Suffczyński, J.
    Kowalik, I.
    Stefanowicz, W.
    Sawicki, M.
    Dietl, T.
    Navarro-Quezada, A.
    Faina, B.
    Li, T.
    Bonanni, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1492954.pdf
    Data publikacji:
    2011-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Pp
    75.30.Hx
    78.20.Ls
    71.35.Ji
    Opis:
    Magnetooptical properties of (Ga,Fe)N layers containing various concentrations of Fe-rich nanocrystals embedded in paramagnetic (Ga,Fe)N layers are reported. Previous studies of such samples demonstrated that magnetization consists of a paramagnetic contribution due to substitutional diluted Fe ions as well as of ferromagnetic and antiferromagnetic components originating from Fe-rich nanocrystals, whose relative abundance can be controlled by the growth conditions. The nanocrystals are found to broaden and to reduce the magnitude of the excitonic features. However, the ferromagnetic contribution, clearly seen in SQUID magnetometry, is not revealed by magnetic circular dichroism. Possible reasons for differences in magnetic response determined by magnetic circular dichroism and SQUID measurements are discussed.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 5; 921-923
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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