Autor: Kudelski, Jacek - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Chromium in urothelial carcinoma of the bladder
Autorzy:: Gołąbek, Tomasz
Socha, Katarzyna
Kudelski, Jacek
Darewicz, Barbara
Markiewicz-Zukowska, Renata
Chłosta, Piotr
Borawska, Maria
Powiązania:: https://bibliotekanauki.pl/articles/987066.pdf
Data publikacji:: 2017
Wydawca:: Instytut Medycyny Wsi
Tematy:: chromium
bladder cancer
heavy metals
Opis:: Introduction and objectives. Many epidemiological and experimental studies report a strong role of chemical carcinogens in the etiology of bladder cancer. However, the involvement of heavy metals in tumourigenesis of urothelial carcinoma of the bladder has been poorly investigated. Therefore, the aim of this study was to examine the relationship between chromium (Cr) and bladder cancer. Materials and methods. Chromium concentration in two 36-sample series of bladder cancer tissue and sera from patients with this neoplasm were matched with those of a control group. The amount of trace elements in every tissue sample was determined using atomic absorption spectrometry. This was correlated with tumour stage. Results. While the median chromium concentration levels reached statistically higher values in the bladder cancer tissue, compared with the non-cancer tissue (99.632ng/g and 33.144ng/g, respectively; p<0.001), the median Cr levels in the sera of the patients with this carcinoma showed no statistical difference when compared to those of the control group (0.511μg/l and 0.710μg/l, respectively; p=0.408). The median levels of Cr in the bladder tissue, depending on the stage of the tumour, compared with the tissue without the neoplasm, observed the same relationship for both non-muscle invasive and muscleinvasive tumours (p<0.001 and p<0.01, respectively). Conclusions. This study shows that patients with urothelial carcinoma of the bladder had higher tissue Cr levels than people without tumour, while no difference was found in the Cr serum levels between the two groups of patients under investigation.
Źródło:: Annals of Agricultural and Environmental Medicine; 2017, 24, 4
1232-1966
Pojawia się w:: Annals of Agricultural and Environmental Medicine
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 2.

Tytuł:: Złoto generałów : służby specjalne PRL na tropie skarbów III Rzeszy
Autorzy:: Kowalski, Jacek M.
Kudelski, J. Robert.
Data publikacji:: 2009
Wydawca:: Kraków : Technol
Tematy:: Skarby Polska od 1944 r.
Służba bezpieczeństwa
Straty wojenne
Opis:: Bibliogr.
Dostawca treści:: Bibliografia CBW

Książka

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Skocz do pozycji: 3.

Tytuł:: An exploratory study on the accuracy of parts printed in FDM processes from novel materials
Autorzy:: Nieciąg, Halina
Kudelski, Rafał
Dudek, Piotr
Cieślik, Jacek
Powiązania:: https://bibliotekanauki.pl/articles/386623.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: FDM
thermoplastic filament materials
geometrical accuracy
Opis:: The paper describes the experiment of assessing the chosen geometric characteristics of test models with simple geometry, shaped by the FDM (fused deposition modelling) method of different materials. The influence of the material grade and the degree of infill density on the shrinkage affecting their dimensional deviations and selected surface topography parameters of printed parts was examined and compared. Three different types of materials were used to fabricate the test models, namely HDGLASS and NANOCARBON, two new fibre reinforced composites available in the market and, additionally ABS, a popular monoplastic material. An infill density ratio of 10, 50 and 90% was assumed for each material. Three specimens were made on the same printer for each infill density, which allowed to assess the repeatability of the analysed characteristics. From among many possible shapes of models, a cube was chosen as representing the simplest geometry, facilitating the measurements themselves and the interpretation of the results. New fibre-reinforced materials are more attractive in industrial applications than pure plastics (ABS) due to their mechanical properties or appearance. They are characterized by a relatively low melting point and short cooling time, after which they can return to their original geometry; however, there is a lack of detailed data on the geometric accuracy of parts made of used composite materials. The presented work was to explanatorily broaden the knowledge about the properties of composite made parts. The practical purpose of the research was that on the basis of measurements, it would be possible to indicate among the materials used that particular material whose properties and method of application would allow obtaining the best quality surface and would be the most resistant to thermal loads. An attempt was also made to explain the possible causes of the differences in the observed characteristics of the tested materials.
Źródło:: Acta Mechanica et Automatica; 2020, 14, 1; 59-68
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki