Results 51 to 60 of about 4,929 (191)

Towards Characterization of Five‐List‐Colorability of Toroidal Graphs

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT Through computer‐assisted enumeration, we list minimal obstructions for 5‐choosability of graphs on the torus with the following additional property: There exists a cyclic system of non‐contractible triangles around the torus where the consecutive triangles are at distance at most four.
Zdeněk Dvořák   +1 more
wiley   +1 more source

Orientations of Graphs With at Most One Directed Path Between Every Pair of Vertices

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT Given a graph G $G$, we say that an orientation D $D$ of G $G$ is a KT orientation if, for all u , v ∈ V ( D ) $u,v\in V(D)$, there is at most one directed path (in any direction) between u $u$ and v $v$. Graphs that admit such orientations have been used to construct graphs with large chromatic number and small clique number that served as ...
Barbora Dohnalová   +3 more
wiley   +1 more source

Effects of catechins, resveratrol, silymarin components and some of their conjugates on xanthine oxidase‐catalyzed xanthine and 6‐mercaptopurine oxidation

open access: yesJournal of the Science of Food and Agriculture, Volume 105, Issue 5, Page 2765-2776, 30 March 2025.
Abstract BACKGROUND Over the past two decades, the global incidence of gout has markedly increased, affecting people worldwide. Considering the side effects of xanthine oxidase (XO) inhibitor drugs (e.g. allopurinol and febuxostat) used in the treatment of hyperuricemia and gout, the potential application of phytochemicals has been widely studied.
Tímea Bencsik   +6 more
wiley   +1 more source

Study of Hydrophobic Domains in Humic Acids [PDF]

open access: yes, 2008
Fyzikálně-chemická povaha hydrofobních domén huminových kyselin byla studována z několika hledisek. K objasnění významu fluorescenčních spekter byly vzorky podrobeny sekvenční frakcionaci, která pomohla k částečnému objasnění vlivu vodorozpustných složek,
Čechlovská, Hana
core  

Coherence‐Gated Mirau Interferometry for Single‐Shot Quantitative Phase Imaging and Motion Sensing

open access: yesLaser &Photonics Reviews, EarlyView.
This paper presents a compact add‐on module converting a Mirau or other on‐axis interferometer into a single‐shot quantitative phase imaging system using coherence gating and precise optical path matching. Demonstrations include time‐resolved imaging of human cells and streaming red blood cells, visualization of evaporation dynamics in liquid mixtures,
Petr Bouchal   +4 more
wiley   +1 more source

Pozabudżetowe źródła finansowania bibliotek akademickich w Polsce i innych krajach gospodarki wolnorynkowej. Wybrane przykłady i próby porównania. [PDF]

open access: yes, 2005
Ograniczone fundusze budżetowe w Polsce, podobnie jak i w innych krajach gospodarki wolnorynkowej spowodowały potrzebę znalezienia innych źródeł dofinansowania bibliotek akademickich.
Kołodziejczyk, Edyta
core  

Speech and Deep Brain Stimulation in Parkinson's Disease, Essential Tremor, and Dystonia: A Systematic Review and Meta‐analysis

open access: yesMovement Disorders, EarlyView.
Abstract Deep brain stimulation (DBS) effectively treats motor symptoms in movement disorders but often compromises speech through incompletely defined mechanisms. We conducted a PROSPERO‐registered systematic review and meta‐analysis of publications through August 2024 (CRD42024527738).
Elina Tripoliti   +15 more
wiley   +1 more source

Analysis of factors influencing Czech SMEs after EU accession [PDF]

open access: yes
The main goal of this paper is to present current research findings in three fields - business environment as a source of innovations, education needs and dynamics of SMEs units.
Šebestová, Jarmila
core   +1 more source

Flax Fiber Flyash/Steel Reinforced Sustainable Composites in Corrosive Conditions: Mechanical, Wear, and Corrosion Properties

open access: yesPolymer Composites, EarlyView.
Materials used for fabricating sustainable composites. ABSTRACT A composite sample with 18% flax fiber flyash (FF) exhibits increased tensile strength (TS) and greater load‐transfer efficiency of the reinforcement under corrosive conditions.
Sumesh Keerthiveettil Ramakrishnan   +2 more
wiley   +1 more source

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