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    Wyświetlanie 1-3 z 3
    Tytuł:
    Badanie zróżnicowania składu chemicznego Cr spineli w obrębie masywu skał ultramaficznych na przykładzie SE Kosowa : zastosowanie w poszukiwaniach i wzbogacaniu rud chromu
    Study on diversity of Cr spinel composition within the ultramafic massif based on the example of SE Kosovo : implications for chromium deposit exploration and beneficiation
    Autorzy:
    Ożóg, Magdalena
    Pieczonka, Jadwiga
    Piestrzyński, Adam
    Ćwiertnia, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2075961.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    chromit
    spinele
    ofiolit
    Kosowo
    techniki EPMA
    chromite
    spinels
    ophiolite
    Kosovo
    EPMA
    Opis:
    New data on chemistry of Cr spinels hosted within the ultramafic massif located in SE Kosovo show variations in their primary composition, which depends on ore and rock types. Spinels form disseminated and vein type ores and accessory spinels in peridotites are characterized by lower Cr and higher Fe concentrations in comparison to spinels making up massive ores. Concentrations of these metals increase in altered spinels both in ores and peridotites. Contents ofMn and Zn tend to be higher in accessory spinels than in spinels occurring in ores. The lower Cr:Fe ratio for Cr-rich spinels in disseminated ores in relations to chromite in massive ores may have an influence on their industrial usefulness. The use of EPMA-WDS technique for detrital spinels should be considered as an effective tool for chromium deposit exploration, especially in greenfield projects, to assess an ultramafic massifpotential for hosting rich ores. Chemical analyses of spinels are recommended in planning a beneficiation process for the low-grade chromite ores, in order to obtain high quality concentrates.
    Źródło:
    Przegląd Geologiczny; 2019, 67; 186--188
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Predictors of stress among emergency medical personnel during the COVID-19 pandemic
    Autorzy:
    Ilczak, Tomasz
    Rak, Małgorzata
    Ćwiertnia, Michał
    Mikulska, Monika
    Waksmańska, Wioletta
    Krakowiak, Anna
    Bobiński, Rafał
    Kawecki, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2086071.pdf
    Data publikacji:
    2021-05-27
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    occupational stress
    emergency medical services
    COVID-19 pandemic
    predictors of stress
    medical professionals
    emergency procedures
    Opis:
    ObjectivesThe COVID-19 pandemic has forced emergency services to implement new standards of practice around the world. The dynamic and unpredictable nature of many clinical situations has placed emergency service personnel in direct danger of contracting the disease. This work uses a validated survey developed for the study to assess the predictors of stress that paramedics, nurses and doctors experience in the face of the COVID-19 pandemic.Material and MethodsThe study group included 955 medical staff, and the level of significance adopted for statistical analysis was p = 0.05. Non-parametric Mann-Whitney and Kruskal-Wallis tests were used to analyze the qualitative variables divided into groups. The selection of tests was carried out based on the distribution of variables, verified using the Shapiro-Wilk test. In order to determine the predictors that caused the feelings of stress, it was necessary to use the linear regression model.ResultsDuring the COVID-19 pandemic, stress among emergency medical personnel has increased considerably due to new factors that did not previously exist. The predictors of stress in the professional environment include the fear of contracting COVID-19, a decrease in the level of safety while conducting emergency medical procedures, and the marginalization of treatment for patients not suffering from COVID-19. Additional socio-demographic factors that increase stress among emergency medical personnel are being female and working in the nursing profession. Appropriate training, the supply of personal protective equipment and opinions on the preparedness of the system to deal with the outbreak of the pandemic did not affect the level of stress among health service personnel.ConclusionsThe factors that can be considered to act as predictors of occupational stress include the fear of contracting COVID-19, a decrease in the level of safety and security while conducting emergency medical procedures, and the marginalization of patients not suffering from COVID-19.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2021, 34, 2; 139-149
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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