Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Urbaniak, J." wg kryterium: Autor

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-5 z 5
    Tytuł:
    Investigation of Electrocatalytic Properties of Pt/Mo - Expanded Graphite Composite Derived from Graphite Intercalation Compound
    Autorzy:
    Urbaniak, J.
    Skowroński, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1535895.pdf
    Data publikacji:
    2010-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.47.Gh
    82.80.Fk
    Opis:
    In the present work, electrocatalytic properties of Pt-EG and Pt/Mo-EG composite electrodes are studied. These composites were prepared by a three-step synthesis. First, stage-1 $HClO_4$-GIC was synthesized using the chronopotentiometric method. Then, $HClO_4$-GIC was heat treated to obtain expanded graphite. Finally, expanded graphite was coated with platinum catalyst from a water-alcohol solution of $H_2PtCl_6$. $MoCl_5$-GIC synthesized in parallel was subjected to thermal exfoliation to get Mo-EG composite onto which platinum catalyst was dispersed. The X-ray diffraction and energy dispersive X-ray analyses coupled with scanning electron microscopy were applied for characterizing the obtained GICs and EG-based composites, whereas cyclic voltammetry was used to study electrocatalytic properties of Pt/EG and Pt/Mo-EG composite electrodes in sulfuric acid and sulfuric acid admixed with methanol.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 3; 442-446
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie pleśni z rodzaju Penicillinum do biodegradacji związków chloroorganicznych
    Autorzy:
    Maliszewska, I.
    Urbaniak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/237397.pdf
    Data publikacji:
    1999
    Wydawca:
    Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
    Tematy:
    pleśnie Penicillinum
    biodegradacja
    związki chloroorganiczne
    Opis:
    Halogenated compounds occurwidely in the biosphere either as natural products or as xenobiotic compounds entering the environment with the use of herbicides and pesticides. In recent years some microorganisms have been reported capable of degrading many of these substrates. Microbial growth on halo-genated compounds requires production ofcatabolic enzymes to cleave the carbon-halogen bonds. The objective of the present study was to examine the ability ofPenicillium sp. G3 (isolated from soil) to degrade chlorinated substrates. Penicillium sp. G3 was able to grow on the investigated halogenated compounds as sole carbon/energy source. Of these, mono-and dichloropro-panes were found to be the best carbon/energy sources. Of the chlorinated acids used for the purpose of the study, 4-chlorobu- tyric and 5-chlorovaleric acids were the best substrates for the growth ofPenicillium sp. G3. All the investigated compounds were degraded with the release of chloride ions to the growth medium. The best substrate for dechlorination was 4-cmorobu-tyric acid. The addition of glucose to the medium stimulated dehalogenation. The results showed that Penicillium sp. G3was not able to mineralize the chemicals tested. Thus, to provide complete mineralization it is necessary to use a mixed popu lation of fungi and bacteria. Having a remarkable ability to dehalo-genate a variety of chlorinated compounds, Penicillium sp. G3 may become an effective component of a mixed culture, thus initiating mineralization of the investigated chemicals.
    Źródło:
    Ochrona Środowiska; 1999, 2; 24-45
    1230-6169
    Pojawia się w:
    Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic differentiation of Allium sibiricum L. populations in Poland based on their morphological and molecular markers
    Autorzy:
    Urbaniak, J.
    Kwiatkowski, P.
    Kozak, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/58012.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Opis:
    Allium sibiricum is one of the rarest plant species in the Sudetes and Carpathians. Inter simple sequence repeat DNA (ISSR) and morphological analyses were conducted to study the biogeographical relationships between geographically disjunctive populations of A. sibiricum in the Carpathians and Sudetes. The results clearly differentiated the Carpathian and Sudetes populations, but also showed a relatively high level of genetic similarity in specimens within certain groups of the Sudetes and Carpathian populations. The plants collected in the Karkonosze probably belong to a mountain form of A. schoenoprasum morphotype C which inhabits natural sites there. In contrast, the study found morphologically and genetically different plants inhabiting Pilsko Mt in the Carpathians. The plants from the Carpathians were present in scattered sites probably due to the activity of Vlach shepherds and the formation of large pastures. The species enlarged its local range due to this type of anthropopressure and likely hybridized with the cultivated Allium plants introduced by the shepherds. This may indicate that the populations on Pilsko Mt are of a partly anthropogenic character.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2019, 88, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charophytes of the Lubelszczyzna region (Eastern Poland)
    Autorzy:
    Urbaniak, J.
    Sugier, P.
    Gabka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/57174.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Eastern Poland
    Chara
    Nitella
    Lychnothamnus
    Nitellopsis
    Charophyta
    Characeae
    species distribution
    ecology
    Polska
    Lublin region
    charophyte
    Opis:
    The distribution and ecology of charophytes in Lubelszczyzna (Eastern Poland) is described based on herbaria collections, literature data, and the author’s own investigations. Maps showing the distribution of all 22 charophyte species identified so far are presented, as well as the details of habitats ecology. Some data on species frequency, conservation, and threats are added.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2011, 80, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microfungal diversity of Juncus trifdus L. and Salix herbacea L. at isolated locations in the Sudetes and Carpathian Mountains
    Autorzy:
    Jacewski, B.
    Urbaniak, J.
    Kwiatkowski, P.
    Pusz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2196368.pdf
    Data publikacji:
    2019-06-25
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Juncus trifidus
    Salix herbacea
    microfungi
    biodiversity
    distribution
    Sudetes Mountains
    Carpathians Mountains
    Opis:
    During cold periods in the Pleistocene Epoch, many plants known as the “relict species” migrated and inhabited new areas. Together with plants, some microfungi also migrated, remaining present on plants and in plant communities. However, the relationship between fungi and the migrating plants (especially host plants) is not well understood. Therefore, we examined the diversity and distribution of microfungi associated with two migratory relict plants in the Sudetes and Carpathian Mountains: Salix herbacea L. and Juncus trifidus L. In total, we found 17 taxa of fungi that were collected from nine different locations. Nine fungal taxa were collected on S. herbacea, and eight taxa on J. trifidus. Localities richest of fungi on S. herbacea were Mały Śnieżny Kocioł (Karkonosze Mts, Sudetes) and on J. trifidus, the Tatra Mts (Carpathian Mts). This work provides new insights into the distribution of fungi inhabiting S. herbacea and J. trifidus in Poland.
    Źródło:
    Acta Mycologica; 2019, 54, 1; 1118
    0001-625X
    2353-074X
    Pojawia się w:
    Acta Mycologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies