Results 91 to 100 of about 1,811,886 (362)
2-(4-Chlorophenyl)-3-p-tolyl-1,3-thiazolidin-4-one
Acta Crystallographica Section E, 2009 The title compound, C16H14ClNOS, a potent antibacterial chemical, features a dihedral angle of 49.4 (1)° between the 4-tolyl and thiazolidinone rings, and a dihedral angle of 87.2 (5)° between the thiazolidinone and ...
Xiao-Jun Sun +3 more
doaj +1 more source
Robust image watermarking using dihedral angle based on maximum-likelihood detector
IET Image Processing, 2013 This study presents a robust image watermarking method based on geometric modelling. In this method, nine samples of the approximation coefficient of the image blocks are utilised to construct a plane in the three-dimensional (3D) space.
Mohammad Hamghalam +2 more
semanticscholar +1 more source
Hyperbolic Dehn filling in dimension four
, 2017 We introduce and study some deformations of complete finite-volume hyperbolic four-manifolds that may be interpreted as four-dimensional analogues of Thurston's hyperbolic Dehn filling.
Martelli, Bruno, Riolo, Stefano
core +1 more source
Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced Robotics Research, EarlyView.Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui +5 more
wiley +1 more source
5-Bromo-17-nitro-26,28-prop-2-enoxy-25,27-dipropoxycalix[4]arene
Acta Crystallographica Section E, 2009 Molecules of the title compound, C40H42BrNO6, are located on a crystallographic twofold rotation axis. As a result, the nitro group and bromine residue are mutually disordered with equal occupancies.
doaj +1 more source
2-{4-[(Quinolin-8-yloxy)methyl]phenyl}benzonitrile
Acta Crystallographica Section E, 2011 In the title compound, C23H16N2O, the bond angle at the O atom that connects the benzene ring and the quinoline ring system is 116.0 (2)°.
Bin Wei
doaj +1 more source
Plagioclase Growth Rates Control Three-grain Junction Geometry in Dolerites and Gabbros [PDF]
Measurements of dihedral angles at three-grain junctions in gabbros, involving two grains of plagioclase and one grain of another mineral, demonstrate that the median dihedral angle is generally the same for all minerals in any sample. The few exceptions
Holness, Marian B.
core +1 more source
Advanced Synthesis &Catalysis, EarlyView.In the presence of a Pd0 catalyst, large π‐extended arynes trimerize in an unusual manner to forge extremely compact and strained chiral benzenoids. This new trimerization reaction involves a 1,7‐Pd isomerization, a rare and poorly understood process that is elucidated.
Albert Artigas +6 more
wiley +1 more source
Acta Crystallographica Section E, 2011 In the crystal, C20H15N7O6S, the dihedral angle between the oxadiazole and triazine rings is 86.94 (7)°. The oxadiazole ring makes a dihedral angle of 52.96 (8)° with the phenyl ring, while the triazine ring makes a ...
Hoong-Kun Fun +3 more
doaj +1 more source
Advanced Synthesis &Catalysis, EarlyView.A Ti(III) complex synthesized mechanochemically catalyzes the cycloaddition of CO2 (1 bar) with terminal, internal, and trisubstituted epoxides. Mechanistic studies by density functional theory calculations reveal that the superior activity of Ti(III) compared to Ti(IV) arises from its lower oxophilicity, facilitating CO2 insertion into Ti–O bonds, as ...
Elena Álvarez‐Ruiz +5 more
wiley +1 more source