Results 31 to 40 of about 7,403 (166)

Dichromatic Number and Cycle Inversions [PDF]

open access: green
The results of this note were stated in the first author PhD manuscript in 2006 but never published. The writing of a proof given there was slightly careless and the proof itself scattered across the document, the goal of this note is to give a short and clear proof using Farkas Lemma.
Pierre Charbit, Stéphan Thomassé
openalex   +3 more sources

Clinical Practice Guidelines for Peroral Cholangioscopy. [PDF]

open access: yesJ Hepatobiliary Pancreat Sci
Nagai and colleagues present evidence‐based clinical practice guidelines developed by the Japan Biliary Association to support the use of peroral cholangioscopy. The guidelines address indications, procedural standards, diagnostic and therapeutic applications, and adverse event management, providing a practical reference for the safe and effective use ...
Nagai K   +13 more
europepmc   +2 more sources

Diversity of color vision: not all Australian marsupials are trichromatic. [PDF]

open access: yesPLoS ONE, 2010
Color vision in marsupials has recently emerged as a particularly interesting case among mammals. It appears that there are both dichromats and trichromats among closely related species.
Wiebke Ebeling   +2 more
doaj   +1 more source

Tomato Fruit Growth and Nutrient Accumulation in Response to Blue and Red Light Treatments during the Reproductive Growth Stage

open access: yesHorticulturae, 2023
Tomatoes are an important fruit consumed worldwide. Within protected cultivation environments, artificial light using energy-efficient light-emitting diodes can be applied in tomato production as an effective way to improve productivity and nutritional ...
Su Hyeon Lee   +4 more
doaj   +1 more source

Blue Photons from Broad-Spectrum LEDs Control Growth, Morphology, and Coloration of Indoor Hydroponic Red-Leaf Lettuce

open access: yesPlants, 2023
For indoor crop production, blue + red light-emitting diodes (LEDs) have high photosynthetic efficacy but create pink or purple hues unsuitable for workers to inspect crops.
Qingwu Meng, Erik S. Runkle
doaj   +1 more source

Joint scaling limit of site percolation on random triangulations in the metric and peanosphere sense

open access: yes, 2021
Recent works have shown that random triangulations decorated by critical ($p=1/2$) Bernoulli site percolation converge in the scaling limit to a $\sqrt{8/3}$-Liouville quantum gravity (LQG) surface (equivalently, a Brownian surface) decorated by SLE$_6 ...
Gwynne, Ewain, Holden, Nina, Sun, Xin
core   +1 more source

Problems of Information Support for Social Assistance to the Population During the COVID-19 Pandemic

open access: yesСоциологическая наука и социальная практика, 2021
The article deals with the actual problems of providing targeted social assistance to the population during the economic crisis. The research subject is a set of measures to stabilize the income of the population, implemented by the Government of the ...
Alexander S. Abroskin   +1 more
doaj   +1 more source

The topography of rods, cones and intrinsically photosensitive retinal ganglion cells in the retinas of a nocturnal (Micaelamys namaquensis) and a diurnal (Rhabdomys pumilio) rodent. [PDF]

open access: yesPLoS ONE, 2018
We used immunocytochemistry to determine the presence and topographical density distributions of rods, cones, and intrinsically photosensitive retinal ganglion cells (ipRGCs) in the four-striped field mouse (Rhabdomys pumilio) and the Namaqua rock mouse (
Ingrid van der Merwe   +5 more
doaj   +1 more source

A semi-strong perfect digraph theorem

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Reed (1987) showed that, if two graphs are P4-isomorphic, then either both are perfect or none of them is. In this note, we will derive an analogous result for perfect digraphs.
Stephan Dominique Andres   +3 more
doaj   +1 more source

A Victorian Age Proof of the Four Color Theorem [PDF]

open access: yes, 2010
In this paper we have investigated some old issues concerning four color map problem. We have given a general method for constructing counter-examples to Kempe's proof of the four color theorem and then show that all counterexamples can be rule out by re-
Cahit, I.
core   +1 more source

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