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    Wyświetlanie 1-4 z 4
    Tytuł:
    The influence of the spin crossover on the crystal structure of the [Fe₃(hyetrz)₆(H₂O)₆](CF₃SO₃)₆ complex compound
    Autorzy:
    Książek, M.
    Bednarek, G.
    Kusz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1113584.pdf
    Data publikacji:
    2016-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cp
    07.85.Jy
    33.15.Bh
    33.15.Dj
    Opis:
    [Fe₃(hyetrz)₆(H₂O)₆](CF₃SO₃)₆ (where hyetrz = 4-(2'-hydroxyethyl)-1,2,4-triazole) is an interesting linear, trinuclear iron(II) compound with incomplete spin crossover. We reinvestigated crystal structure of this compound in the wide temperature range because the knowledge only about the crystal structure in the initial and final phases is not sufficient to establish correlations between the structural and magnetic properties of the spin crossover system. The complex [Zn₃(hyetrz)₆(H₂O)₆](CF₃SO₃)₆ was used for comparison because it does not exhibit spin crossover phenomenon and it is isostructural with a high spin phase of Fe(II).
    Źródło:
    Acta Physica Polonica A; 2016, 130, 4; 873-875
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Występowanie, kondycja i zagrożenia zimoziołu północnego w Puszczy Augustowskiej
    The twinflower in the Augustow Forest: occurrence, condition and threats
    Autorzy:
    Zawadzka, D.
    Zawadzki, G.
    Bednarek, J.
    Bednarek, J.B.
    Piechowska, D.
    Mikitiuk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1293182.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    lasy
    Puszcza Augustowska
    inwentaryzacja przyrodnicza
    rosliny chronione
    rosliny ginace
    zimoziol polnocny
    Linnaea borealis
    wystepowanie
    stanowiska
    kondycja
    zagrozenia roslin
    Opis:
    The twinflower Linnaea borealis L. is a rare, boreal plant species that grows in coniferous forests and is partly protected in Poland. We studied its distribution and the condition of twinflower patches in the Augustów Forest (NE Poland) describing 22 twinflower patches in total. The following features were assessed: (1) patch area, (2) distance between individual twinflowers, (3) patch density, (4) intensity of flowering, (5) fruiting, (6) main accompanying plant species, (7) plant community structure, (8) species composition and age of the forest stands, (9) canopy cover of the forest stands, (10) existing and potential threats. In the northern part of the forest where suitable pine sites dominated, twinflowers were distributed irregularly and unevenly. Twinflowers in the Augustów Forest occur in relatively big areas with individual patches covering from 100 m2 to 3000 m2, but most commonly 500–1000 m2. The mean distance to the nearest neighbouring twinflower was 1600 m (range from 250 m to 6035 m). This pattern of distribution and separating distance does allow for sexual reproduction within the studied forest stand and blooming was confirmed in 21 out of 22 patches. In four locations, intensive blooming with >50 flowers shoot/m2 was observed. We did not observe a dependency of the flowering intensity on patch size. Despite the intensive and frequent flowering, as well as the presence of fruits, which were found in 15 patches, the twinflower reproduces mainly vegetatively. Twinflowers grew in 34–166 years-old pine-spruce stands with moderate canopy cover, but there was no relationship between the age of forest stands and the size of a flower patch. Plant species, which commonly occurred with twinflowers were: Vaccinium myrtillus, Calamagrostis arundinacea, Goodyera repens, Rubus saxatilis, Fragaria vesca, Pleurosium schreberi. Twinflower communities are threatened by invasive species in the forest understory in two locations only, while in the other locations no active protection is needed and the plants should rather be protected and monitored through multifunctional forest management. We emphasise the importance of the Augustów Forest for the twinflower in Poland, because about 10% of the Polish population grows in this forest complex.
    Źródło:
    Leśne Prace Badawcze; 2017, 78, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Validation of the Polish language version of the Patient Health Questionnaire-9 in a population of adults aged 35–64
    Autorzy:
    Ślusarska, B.J.
    Nowicki, G.
    Piasecka, H.
    Zarzycka, D.
    Mazur, A.
    Saran, T.
    Bednarek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2085066.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    PHQ-9
    depression severity
    general population
    psychometric assessment
    Opis:
    Introduction. Depressive disorders are one of the most common psychiatric disorders. Recognition of signs of mental health disorders is not always easy, hence the availability of simple and accurate tools for assessing them is very important in the practice of primary care. Objective. The aim of the study is to assess the theoretical accuracy and reliability of the Patient Health Questionnaire-9 (PHQ-9) in Polish conditions, when applied to general population studies for adults aged between 35–64. Materials and method. The study comprised a population of 4,040 people. Women constituted 59% of the research population and people living in the countryside 65%. The average age of participants was 53.45 ± 7.05 years. According to PHQ-9, 727 people (18.0%) had moderate, moderate to severe or severe depression. PHQ-9 showed a significant positive internal cohesion (Cronbach’s alpha = 0.77), and factor charges oscillated between 0.43–0.63, and the R2 coefficients of determination were in the range of 0.21–0.40. Conclusions. The Polish version of PHQ-9 is a valid tool for diagnosing depression in the general population aged 35–64. Good psychometric properties and compactness make the PHQ-9 a useful clinical and research tool.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2019, 26, 3; 420-424
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Disrupted iron metabolism in peritoneal fluid may induce oxidative stress in the peritoneal cavity of women with endometriosis
    Autorzy:
    Polak, G.
    Barczyński, B.
    Wertel, I.
    Kwaśniewski, W.
    Bednarek, W.
    Derewianka-Polak, M.
    Fraszczak, K.
    Olajossy, M.
    Kotarski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2081934.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    Endometriosis
    peritoneal fluid
    oxidative stress
    haemaglobin
    iron
    total oxidative status
    total antioxidant status
    Opis:
    Introduction and objective. Data on the possible role of peritoneal fluid free radical-mediated oxidative damage in the pathogenesis of endometriosis still remains inconsistent. The aim of the study was to determine iron metabolism markers and their influence on oxidative stress parameters in the peritoneal fluid of women with endometriosis. Materials and method. 110 women with endometriosis and 119 patients with benign ovarian cysts were included in the study. All visible peritoneal fluid was aspirated during laparoscopy from the anterior and posterior cul-de-sacs. under direct vision to avoid blood contamination. Haemoglobin, iron, total oxidative status, and total antioxidant status were measured using standard colourimetric kits. Results. Haemoglobin, iron levels, as well as total oxidative status values were significantly higher, whereas total antioxidant status values were significantly lower in the peritoneal fluid of patients with endometriosis, in comparison to the reference groups. No differences were observed in peritoneal fluid concentrations of all parameters measured in relation to the phase of the menstrual cycle. Conclusions. Peritoneal fluid of women with endometriosis is characterized by disrupted iron metabolism. This is most likely related to an increased number of erythrocytes in the peritoneal cavity of endometriotic women, which leads to a higher concentration of haemoglobin in this environment. Impaired iron homeostasis may have a significant influence on the pathophysiology of peritoneal endometriosis by the direct impact of haemoglobin derivatives and/or formation of the pro-inflammatory and pro-oxidative environment. Peritoneal cavity oxidative stress occurs predominantly in women in advanced stages of the disease.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2018, 25, 4; 587-592
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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