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Wyszukujesz frazę "Lada, K." wg kryterium: Autor


Wyświetlanie 1-7 z 7
Tytuł:
Motility activity, slime production, biofilm formation and genetic typing by ERIC-PCR for Pseudomonas aeruginosa strains isolated from bovine and other sources (human and environment)
Autorzy:
Wolska, K.
Szweda, P.
Lada, K.
Rytel, E.
Gucwa, K.
Kot, B.
Piechota, M.
Powiązania:
https://bibliotekanauki.pl/articles/30220.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The molecular-typing strategy, ERIC-PCR was used in an attempt to determine the genomic relationship of 28 P. aeruginosa strains isolated from faeces of healthy bovine, bovine mastitis and from faeces of hospital patients as well as from environment. ERIC-PCR fingerprinting revealed large molecular differentiation within this group of isolates. Twenty two out of 28 strains tested generated unique patterns of DNA bands and only three genotypes consisted of two isolates each were identified. We also tested the P. aeruginosa isolates for their ability to form a biofilm on abiotic surfaces including polyvinylchloride and polystyrene. Different biofilm-forming abilities were demonstrated among strains; however, most of them (64.3%) showed moderate-biofilm forming ability. The strains with increased swimming and twitching motility displayed elevated biofilm formation. However, a negative correlation was found between slime and initial biofilm production. On the basis of the results obtained, we suggest that there are no major differences in phenotypic properties between P. aeruginosa strains isolated from different sources.
Źródło:
Polish Journal of Veterinary Sciences; 2014, 17, 2; 321-329
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure Characterization of Composite from ZrO2 – Ti System
Autorzy:
Łada, P.
Miazga, A.
Bazarnik, P.
Konopka, K.
Powiązania:
https://bibliotekanauki.pl/articles/354416.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
titanium
zirconium oxide (ZrO2)
composite
stereology
Opis:
In this work the microstructure analysis of composite from ZrO2 – Ti system were presented. For the preparation of the composite samples nanometric ZrO2 powder stabilized by 3 mol% of Y2O3 and micrometric titanium powder were used. The composites with 10 vol.% addition of titanium particles were prepared by slip casting method. The sintering process was conducted at 1450°C with 2 hours’ dwell time, in the inert atmosphere of argon. The microstructure observations were carried out with the use of SEM and STEM microscopes. The quantitative analysis and stereological characterization were performed. The SEM and STEM observations allowed characterizing the microstructure of composite samples. Especially, the interface between titanium particles and zirconia matrix was described. The growth of the zirconia grains around the Ti rich areas was observed. The increase of the zirconia grains size results from the reaction on the interface between titanium particle and zirconia matrix during the sintering process.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 4; 2045-2049
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication of ZrO2-Ti Composites by Slip Casting Method
Autorzy:
Łada, P.
Falkowski, P.
Miazga, A.
Konopka, K.
Szafran, M.
Powiązania:
https://bibliotekanauki.pl/articles/351354.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ceramic-metal composite
titanium
zirconium oxide
slip-casting
Opis:
Slip casting is one of the most popular shaping method in ceramic technology which allows producing a large number of elements in small period of time. This shaping technique gives a possibility to fabricate ceramic or composite materials such as ZrO2-Ti. Ti with its properties (low density, high melting point, high-temperature strength, good corrosion resistance and others) combine with ZrO2 (high flexure strength, high compression resistance and very high KIC) can be considered for different applications as constructional and functional materials. For the preparation of such composite nanometric zirconium oxide powder stabilized by 3 mol% Y2O3 and micrometric titanium powder were used. Water-based slurries with 35, 40, 45 and 50 vol.% solid phase content were prepared with 3, 10 and 15 vol.% addition of titanium powder. Zeta potential and pH of prepared slurries were considered. The pH changes were tested as a function of Ti content. The viscosity of the prepared slurries was measured. The sedimentation tests for selected slurries were performed. The casting rate for slurry of 35% solid phase with 10 vol.% Ti was examined. These measurements showed good stability of slurries. With the increasing of the solid phase concentration the density of the green bodies increased. However, the increase of the content of Ti powder reduced the density of green body samples. For selected samples the SEM observations was carried out. Composites produced by slip casting were characterized by a homogenous distribution of Ti particles in the ZrO2 matrix.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 2B; 1095-1100
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Xylem-fed maple sap accelerates balsam fir needle abscission and but can delay water loss in spring and autumn
Autorzy:
MacDonald, M.T.
Lada, R.R.
West, R.R.
Nelson, K.L.
Powiązania:
https://bibliotekanauki.pl/articles/40990.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
xylem
abscisic acid
Abies balsamea
balsam
fir tree
balsam fir tree
needle
water content
water uptake
water loss
spring
autumn
Opis:
Postharvest balsam fir trees are known to suffer a number of problems that may be linked to abscission rates, such as dehydration or wounding. By definition, postharvest balsam fir trees are also detached from roots and will no longer be supplied certain root derived factors normally translocated via the xylem. Resupplying those root derived factors may delay abscission. The objective of this experiment was to take sap from a root intact species (i.e. Acer saccharum L) and add it to the water supply of balsam fir branches. Further, the effect of reverse osmosis and autoclaving the sap supply will be explored. The experiment was conducted once in spring and again in autumn to examine seasonal changes in needle abscission. The only hormones found in the maple sap were ABA and its metabolites, with PA (163.0 ng g–1) being the primary metabolite present. Needle retention was higher in branches harvested in autumn, as long as they were provided a sap that did not undergo RO. If the sap had undergone RO, then needle retention was slightly decreased in autumn. Needle retention generally decreased as the concentration of maple sap in the water supply increased and this trend was accelerated if the sap had undergone RO. Autoclaving the sap successfully delayed the length of time for water consumption to decrease, but this unexpectedly did not translate into improved needle retention.
Źródło:
Dendrobiology; 2016, 76
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manufacturing of ZrO2-Ni graded composites via centrifugal casting in the magnetic field
Autorzy:
Wachowski, M.
Kosturek, R.
Winkler, H.
Miazga, A.
Lada, P.
Kaszuwara, W.
Konopka, K.
Zygmuntowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/200807.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ZrO2-Ni
ceramic matrix composites
FGM
microstructure
magnetic field
Opis:
The paper presents the possibility of fabricating ceramic-metal composites by an innovative method of centrifugal slip casting in the magnetic field. It was examined whether the use of this method would allow obtaining a gradient concentration of metal particles in the ceramic matrix. In the applied technique, the horizontal rotation axis was used. The study investigated the effect of solid phase content on the properties and microstructure of the products. Water-based suspensions with 35, 40, 45 and 50 vol.% of solid-phase content were prepared with 10 vol.% additional of nickel powder. The viscosity of prepared slurries was considered. The gradient distribution of nickel particles in the zirconia matrix was observed on SEM. Vickers hardness of ZrO2-Ni composites has been measured. The research revealed that the physical properties depend on the volume fraction of solid content and increase as the volume of solid content increases.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 3; 539-545
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Endometrial cancer and physical activity
Autorzy:
Terlikowski, R.
Łada, Z.
Strzyż-Skalij, M.A.
Kryński, K.
Osmólska, M.
Malinowska-Gleń, M.
Kryńska, E.E.
Terlikowska, K.M.
Powiązania:
https://bibliotekanauki.pl/articles/1918589.pdf
Data publikacji:
2018-06-21
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Endometrial cancer
physical activity
Opis:
Physical activity (PA) is an important modifiable risk factor for endometrial cancer (EC). PA has been studied using diverse measures including metabolic equivalent of task MET, duration, frequency and subjective levels, but for practical reasons most of epidemiological studies use questionnaires rather than objective measures to document PA. Moderate-intense daily PA has a protective effect and have a 20-40% reduced risk of EC. In this rewiev complex and variable behaviour, and the ability of epidemiological studies to determine the relationship between PA and EC has been discussed.
Źródło:
Progress in Health Sciences; 2018, 8(1); 202-206
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ovarian cancer and inflammation. Part 1. Pro-inflammatory cytokines
Autorzy:
Terlikowska, K.M.
Strzyż-Skalij, M.A.
Kryński, K.
Osmólska, M.
Łada, Z.
Malinowska-Gleń, M.
Kryńska, E.E.
Terlikowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/1918599.pdf
Data publikacji:
2018-06-21
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Ovarian cancer
inflammation
cytokines
Opis:
Ovarian cancer is the most threatening cause of death among gynecologic malignancies and represents the fifth leading cause of death from all cancers for women. Research reveals that ovarian cancer patients exhibit significant immune responses against the tumor. In this review of the current literature chiefly the interaction of ovarian cancer tumor cells and the immune system is discussed. There is increasingly growing evidence that pro-inflammatory cytokines are involved in intricate complex of mechanisms responsible for tumorigenesis, and delicate balance between pro- and anti-inflammatory cytokines is critical for the antitumor host immune response.
Źródło:
Progress in Health Sciences; 2018, 8(1); 194-201
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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