Krzysztof Rakowski

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We have recently shown that 12(S)-hydroxyeicosatetraenoic acid plays a role in the organization of actin microfilaments in rat cardiomyocytes, and that inhibition of 12-lipoxygenase abrogates insulin-stimulated GLUT4 translocation in these cells. In the present study, we used mice that were null for the leukocyte 12/15-lipoxygenase to explore the(More)
A comparison of lossleess compression results is given for RGB, YC R C B and reversible JPEG 2000 color space. The paper describes the general conditions that rounding errors of a color transformation do not cumulate in the consecutive cycles of forward and inverse transformation. In particular, rounding errors of the RGB → YC R C B → RGB transformation do(More)
OBJECTIVES To assess the awareness and voluntary usage of the World Health Organization's Surgical Safety Checklist (WHO SSC), just prior to its mandatory implementation. DESIGN Questionnaire-based, prospective, telephone survey. SETTING Patients are exposed to systematic risks and principles of surgical safety are inconsistently applied even in(More)
The paper defines the conditions for the coefficients of a linear color transformation that guarantee that after one cycle of transformation and inverse transformation all further cycles of transformation do not introduce rounding errors to sample values. Moreover, the upper limits of the rounding error can be calculated according to the formulas given in(More)
The high prevalence of urinary tract infections (UTIs) places a significant burden on healthcare systems. Clinicians may over-manage the issue, and there is great variability in practice, with economic- and resource- implications. Up to 40% of patients with a suspected UTI do not have an infection. Using PubMed (Medline) to shortlist relevant papers in(More)
Two antisera (ATP88 and ATP95) raised against the V-ATPase holoenzyme of Kalanchoë daigremontiana were tested for their cross-reactivity with subunits of V-ATPases from other plant species. V-ATPases from Kalanchoë blossfeldiana, Mesembryanthemum crystallinum, Nicotiana tabacum, Lycopersicon esculentum, Citrus limon, Lemna gibba, Hordeum vulgare and Zea(More)
Soluble proteins were isolated from leaves of the common ice plant Mesembryanthemum crystallinum L. in the CAM state of photosynthesis and tested for protease activity using amino acid-beta-naphthylamide (NA)-derivatives in a search for proteolytic activity responsible for cleavage of the V-ATPase subunit B. This cleavage is suggested to occur at the(More)
ACKNOWLEDGEMENTS This dissertation is a result of the fruitful cooperation with my advisor Prof. Marek Domański, who was the spiritus movens for my activity in image compression field. He has introduced me into this subject, showed the basic ideas and theorems and encouraged me to continue my work. I must not forget about my father Marian who was both the(More)