User profiles for Zdeněk Dvořák
Zdenek DvorakComputer Science Institute, Charles University, Prague Verified email at ucw.cz Cited by 6669 |
[HTML][HTML] Correspondence coloring and its application to list-coloring planar graphs without cycles of lengths 4 to 8
We introduce a new variant of graph coloring called correspondence coloring which
generalizes list coloring and allows for reductions previously only possible for ordinary coloring. …
generalizes list coloring and allows for reductions previously only possible for ordinary coloring. …
[HTML][HTML] Gut microbial catabolites of tryptophan are ligands and agonists of the aryl hydrocarbon receptor: a detailed characterization
…, J Vondráček, M Karasová, S Mani, Z Dvořák - International journal of …, 2020 - mdpi.com
We examined the effects of gut microbial catabolites of tryptophan on the aryl hydrocarbon
receptor (AhR). Using a reporter gene assay, we show that all studied catabolites are low-…
receptor (AhR). Using a reporter gene assay, we show that all studied catabolites are low-…
Three new ichnogenera of biting and gnawing traces on reptilian and mammalian bones: a case study from the Miocene of the Czech Republic
R Mikuláš, E Kadlecová, O Fejfar, Z Dvořák - Ichnos, 2006 - Taylor & Francis
The Ahníkov (Miocene, Czech Republic) site represents a concentration of vertebrate
skeletal remains in a swamp setting. Autochthonous bone deposits were strongly altered by …
skeletal remains in a swamp setting. Autochthonous bone deposits were strongly altered by …
[HTML][HTML] Monoterpenoid aryl hydrocarbon receptor allosteric antagonists protect against ultraviolet skin damage in female mice
…, H Li, S Mani, Z Dvořák - Nature …, 2023 - nature.com
The human aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that is
a pivotal regulator of human physiology and pathophysiology. Allosteric inhibition of AhR …
a pivotal regulator of human physiology and pathophysiology. Allosteric inhibition of AhR …
[HTML][HTML] Coloring squares of planar graphs with girth six
Z Dvořák, P Nejedlý, R Škrekovski - European Journal of Combinatorics, 2008 - Elsevier
Wang and Lih conjectured that for every g≥5, there exists a number M(g) such that the
square of a planar graph G of girth at least g and maximum degree Δ≥M(g) is (Δ+1)-colorable. …
square of a planar graph G of girth at least g and maximum degree Δ≥M(g) is (Δ+1)-colorable. …
[HTML][HTML] Constant-factor approximation of the domination number in sparse graphs
Z Dvořák - European Journal of Combinatorics, 2013 - Elsevier
The k-domination number of a graph is the minimum size of a set D such that every vertex of
G is at distance at most k from D. We give a linear-time constant-factor algorithm for …
G is at distance at most k from D. We give a linear-time constant-factor algorithm for …
Primary cultures of human hepatocytes as a tool in cytotoxicity studies: cell protection against model toxins by flavonolignans obtained from Silybum marianum
The aim of this study was to evaluate the cytoprotective effects upon primary human
hepatocytes of silymarin extract and its main flavonolignans following exposure to the cytotoxic …
hepatocytes of silymarin extract and its main flavonolignans following exposure to the cytotoxic …
Cytotoxicity of natural compounds in hepatocyte cell culture models: the case of quaternary benzo [c] phenanthridine alkaloids
J Ulrichová, Z Dvořák, J Vičar, J Lata, J Smržová… - Toxicology Letters, 2001 - Elsevier
The quaternary benzo[c]phenanthridine alkaloids (QBA) produce a plethora of species- and
tissue-specific effects but the molecular basis of their biological activities remain mysterious. …
tissue-specific effects but the molecular basis of their biological activities remain mysterious. …
Dinuclear doubly bridged phenoxido copper (II) complexes as efficient anticancer agents
Two cationic [Cu 2 (L 1-2 ) 2 ](ClO 4 ) 2 (1, 2), and four neutral doubly bridged-phenoxido-copper(II)
complexes [Cu 2 (L 3-4 ) 2 ] (3, 4) and [Cu 2 (L 5-6 ) 2 (H 2 O)]‧2H 2 O (5, 6) as well …
complexes [Cu 2 (L 3-4 ) 2 ] (3, 4) and [Cu 2 (L 5-6 ) 2 (H 2 O)]‧2H 2 O (5, 6) as well …
In vitro profiling of toxic effects of prominent environmental lower-chlorinated PCB congeners linked with endocrine disruption and tumor promotion
…, S Strapáčová, J Neča, I Bartoňková, Z Dvořák… - Environmental …, 2018 - Elsevier
The mechanisms contributing to toxic effects of airborne lower-chlorinated PCB congeners (LC-PCBs)
remain poorly characterized. We evaluated in vitro toxicities of environmental LC-…
remain poorly characterized. We evaluated in vitro toxicities of environmental LC-…