Results 91 to 100 of about 700 (120)

Fractional Exhaled Nitric Oxide (FeNO) in Biomass Smoke-Associated Chronic Obstructive Pulmonary Disease. [PDF]

open access: yesMed Sci (Basel)
Silva-Gallardo J   +5 more
europepmc   +1 more source

3D-printed fiber-bundle fluorescence microscope for quantifying single-cell responses to high-power radiofrequency sources. [PDF]

open access: yesBiomed Opt Express
O'Connor SP   +9 more
europepmc   +1 more source

Girth and fractional chromatic number of planar graphs

Journal of Graph Theory, 2002
AbstractIn 1959, even before the Four‐Color Theorem was proved, Grötzsch showed that planar graphs with girth at least 4 have chromatic number at the most 3. We examine the fractional analogue of this theorem and its generalizations. For any fixed girth, we ask for the largest possible fractional chromatic number of a planar graph with that girth, and ...
Amir Pirnazar, Daniel H. Ullman
exaly   +2 more sources

Fractional chromatic number and circular chromatic number for distance graphs with large clique size

Journal of Graph Theory, 2004
AbstractAn Erratum has been published for this article in Journal of Graph Theory 48: 329–330, 2005.Let M be a set of positive integers. The distance graph generated by M, denoted by G(Z, M), has the set Z of all integers as the vertex set, and edges ij whenever |i−j| ∈ M. We investigate the fractional chromatic number and the circular chromatic number
Xuding Zhu
exaly   +3 more sources

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