Results 21 to 30 of about 13,317 (263)

Smartphone LiDAR Technologies for Surveying and Reality Modelling in Urban Scenarios: Evaluation Methods, Performance and Challenges

open access: yesApplied System Innovation, 2022
The aim of the research was to evaluate the performance of smartphone depth sensors (Time of Flight Camera(ToF) and Light Detection and Ranging (LiDAR)) from Android (Huawei P30 Pro) and iOS (iPhone 12 Pro and iPAD 2021 Pro) devices in order to build a ...
Domenica Costantino   +3 more
doaj   +1 more source

Characterization and Structural Analysis of Genkwanin, a Natural Product from Callicarpa americana

open access: yesCrystals, 2019
The natural compound Genkwanin (systematic name: 5-hydroxy-2-(4-hydroxyphenyl)-7-methoxychromen-4-one) C16H12O5 (1) is a non-glycosylated flavonoid isolated from Callicarpa americana.
Gina Porras   +3 more
doaj   +1 more source

9-Ethyl-N-(3-nitrobenzylidene)-9H-carbazol-3-amine

open access: yesActa Crystallographica Section E, 2011
The title compound, C21H17N3O2, crystallizes with two molecules in the asymmetric unit. The carbazole groups show relatively small deviations from planarity [maximum displacements from the mean carbazole plane are 0.077 (7) and 0.101 (
R. Archana   +4 more
doaj   +1 more source

Acyclic colouring of 1-planar graphs

open access: yesDiscrete Applied Mathematics, 2001
A graph is said to be 1-planar if it can be embedded into the plane so that each of its edges is crossed by at most one other edge. A coloring of the vertices of a graph is said to be acyclic if every cycle contains at least three colors. The acyclic chromatic number \(a(G)\) of a graph \(G\) is the minimal \(k\) such that \(G\) admits an acyclic \(k\)-
Oleg V. Borodin   +3 more
openaire   +3 more sources

(Z)-3-[(3,5-Dichloroanilino)methylidene]-5-(4-methylphenyl)furan-2(3H)-one

open access: yesIUCrData, 2018
The crystal structure of the title compound, C18H13Cl2NO2, at 120 K has triclinic (P\overline{1}) symmetry. The molecule demonstrates non-planarity in the solid state and a Z configuration for the exocyclic C=C bond.
Vyacheslav S. Grinev   +2 more
doaj   +1 more source

4-Amino-13-(1-naphthyl)-[2,2]paracyclophane

open access: yesActa Crystallographica Section E, 2008
The title compound [systematic name: 12-amino-42-(1-naphthyl)-1,4(1,4)-dibenzenacyclohexaphane], C26H23N, was synthesized from 4-amino-13-bromo-[2,2]paracyclophane and 1-naphthaleneboronic acid in the presence of 1,4-dioxane.
Yudao Ma   +4 more
doaj   +1 more source

Extending Partial 1-Planar Drawings

open access: yesCoRR, 2020
A shortened version of this article has been accepted for presentation and publication at the 47th International Colloquium on Automata, Languages and Programming (ICALP 2020)
Eduard Eiben   +4 more
openaire   +5 more sources

3′,6′-Bis(ethylamino)-2′,7′-dimethyl-2-{[2-[(E)-3,4-methylenedioxybenzylideneamino]ethyl}spiro[isoindoline-1,9′-xanthen]-3-one

open access: yesActa Crystallographica Section E, 2009
The title compound, C36H36N4O4, was prepared as a spirolactam ring formation of the rhodamine dye for comparison with a ring-opened form. The xanthene ring system is approximately planar [r.m.s.
Zhi-Hong Xu   +3 more
doaj   +1 more source

OOPS: Optimized One-Planarity Solver via SAT

open access: yesJournal of Graph Algorithms and Applications
We present OOPS (Optimized One-Planarity Solver), a practical heuristic for recognizing 1-planar graphs and several important subclasses. A graph is 1-planar if it can be drawn in the plane such that each edge is crossed at most once---a natural ...
Sergey Pupyrev
doaj   +1 more source

(5Z,7Z)-6,8-Dimethyl-9H-tetrazolo[1,5-b][1,2,4]triazepine

open access: yesActa Crystallographica Section E, 2009
The molecule of the title compound, C6H8N6, is approximately planar, with a maximum deviation from planarity of 0.099 (1) Å.
Chun-Lin He   +4 more
doaj   +1 more source

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