Autor: Borucki, Wojciech - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: L' offre et la demande des e-competences des employes en Pologne - une approche d'estimation
Autorzy:: Borucki, Wojciech
Springer, Agnieszka
Powiązania:: https://bibliotekanauki.pl/articles/593658.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Ekonomiczny w Katowicach
Tematy:: Rynek pracy
Umiejętności pracownicze
Employee skills
Labour market
Opis:: Parler des compétences des travailleurs conduit à évoquer les besoins, lacunes ou incompétences qui proviennent de l'utilisation des technologies de communication électronique. Paralèllement, les changements sur le marché du travail polonais indiquent que le travail mental non routinier prend une place de plus en plus importante. Compte tenu de l'importance et de l'impact des /incompétences /dans le travail effectué dans différents groupes professionnels, on peut déjà observer une lacune évidente, à la fois de nature cognitive et sociale.
Źródło:: Studia Ekonomiczne; 2013, 150; 203-217
2083-8611
Pojawia się w:: Studia Ekonomiczne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Alteration of O-specific polysaccharide structure of symbiotically defective Mesorhizobium loti mutant 2213.1 derived from strain NZP2213
Autorzy:: Turska-Szewczuk, Anna
Pietras, Hubert
Borucki, Wojciech
Russa, Ryszard
Powiązania:: https://bibliotekanauki.pl/articles/1040838.pdf
Data publikacji:: 2008
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: Mesorhizobium loti
symbiosis
6-deoxytalose
O-specific polysaccharide
bacterial polysaccharide structure
Opis:: Mesorhizobium loti mutant 2213.1 derived from the wild-type strain NZP2213 by Tn5 mutagenesis showed impaired effectiveness of symbiosis with the host plant Lotus corniculatus (Turska-Szewczuk et al., 2007 Microbiol Res, in press). The inability of lipopolysaccharide (LPS) isolated from the mutant 2213.1 strain or de-O-acetylated LPS of the parental cells to inactivate phage A1 particles implicated alterations in the LPS structure. The O-specific polysaccharide of the mutant was studied by chemical analyses along with 1H and 13C NMR spectroscopy, which clearly confirmed alterations in the O-chain structure. 2D NMR data showed that the mutant O-polysaccharide consists of a tetrasaccharide repeating unit containing non-substituted as well as O-acetylated or O-methylated 6-deoxytalopyranose residues. Additionally, an immunogold assay revealed a reduced number of gold particles on the mutant bacteroid cell surface, which could result from both a diminished amount of an O-antigenic determinant in mutant LPS and modifications of structural epitopes caused by alterations in O-acetylation or O-methylation of sugar residues. Western immunoblot assay of alkaline de-O-acetylated lipophilic M. loti NZP2213 LPS showed no reactivity with homologous serum indicating a role of O-acetyl groups in its O-specificity.
Źródło:: Acta Biochimica Polonica; 2008, 55, 1; 191-200
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Early detection of phosphorus deficiency stress in cucumber at the cellular level using chlorophyll fluorescence signals
Autorzy:: Sieczko, Leszek
Dąbrowski, Piotr
Kowalczyk, Katarzyna
Gajc-Wolska, Janina
Borucki, Wojciech
Janaszek-Mańkowska, Monika
Kowalczyk, Waldemar
Farci, Domenica
Kalaji, Hazem M.
Powiązania:: https://bibliotekanauki.pl/articles/2203572.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: abiotic stress
chlorophyll fluorescence
cucumber
JIP test
multidimensional statistical analysis
photosynthesis
Opis:: Abiotic stressors contribute to growth restriction and developmental disorders in plants. Early detection of the first signs of changes in plant functioning is very important. The objective of this study was to identify chlorophyll fluorescence parameters that change under phosphorus deficiency stress in cucumber. In this work, a trail to study the early changes caused by phosphorus deficiency in cucumber plants by analysing their photosynthetic performance is presented. Chlorophyll-a fluorescence (ChF) parameters were measured every 7 days for a period of 28 days. Measurements were made separately on young and old leaves and on cucumber fruit. Parameters that decreased during the stress were: p2G, PI abs, PI total, REo/CSo, and TRo/CSo. P deficiency decreased total electron carriers per RC (ECo/RC), yields (TRo/ABS (Fv/Fm), ETo/TRo, REo/ETo, ETo/ABS and REo/ABS), fluxes (REo/RC and REo/CSo) and fractional reduction of PSI end electron acceptors, and damaged all photochemical and non-photochemical redox reactions. Principal component analysis revealed a group of ChF parameters that may indicate early phosphorus deficiency in cucumber plants. Our results are used in the discovery of sensitive bioindicators of phosphorus deficiency in cucumber plants. Most JIP test parameters are linked to mathematical equations, so we recommend using of advanced statistical tools, such as principal component analysis, which should be considered very useful for stress identification. It has also been shown to be more effective in multivariate methods compared to univariate statistical methods was demonstrated.
Źródło:: Journal of Water and Land Development; 2022, Special Issue; 176--186
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki