Results 21 to 30 of about 71,077 (260)

Geometry of biperiodic alternating links

Journal of the London Mathematical Society, 2018
A biperiodic alternating link has an alternating quotient link in the thickened torus. In this paper, we focus on semi-regular links, a class of biperiodic alternating links whose hyperbolic structure can be immediately determined from a corresponding Euclidean tiling. Consequently, we determine the exact volumes of semi-regular links.
Champanerkar, Abhijit, Kofman, Ilya, Purcell, Jessica S.   +2 more
openaire   +4 more sources

PRE-SERVICE TEACHERS PERFORMANCE IN GEOMETRY IN THE COLLEGES OF EDUCATION, GHANA

JETEN, 2022
Studies indicate that geometry enables pre-service teachers to link mapping objects in the classroom to real-life situations. Additionally, studies indicated that the proficiency development of the participants is a challenge.
Puotier Zutaah, Marguerite Khakasa Miheso-O’Connor, Samson Rosana Ondigi   +2 more
doaj  

catena-Poly[di-μ3-bromido-hexa-μ2-bromido-dibromidobis(O-methyl pyridine-2-carboximidate-κ2N,N′)pentamercury(II)]

Acta Crystallographica Section E, 2012
The title compound, [Hg5Br10(C7H8N2O)2]n, contains two μ3-bridging Br atoms, six μ2-bridging Br atoms and two terminal Br atoms. One HgII atom, lying on an inversion center, adopts a distorted octahedral geometry defined by six Br atoms.
Sadif A. Shirvan, Moayad Hossaini Sadr
doaj   +1 more source

Diiodido{2-(morpholin-4-yl)-N-[1-(2-pyridyl)ethylidene]ethanamine-κ3N,N′,N′′}zinc

Acta Crystallographica Section E, 2011
In the title compound, [ZnI2(C13H19N3O)], the ZnII ion is five-coordinated in a distorted square-pyramidal geometry, in which the basal plane is defined by three N atoms from the Schiff base ligand and one iodide ion.
Nura Suleiman Gwaram, Hamid Khaledi, Hapipah Mohd Ali   +2 more
doaj   +1 more source

2-(5-Bromo-2-methylphenyl)propan-2-ol

Acta Crystallographica Section E, 2010
The title compound, C10H13BrO, crystallizes with four independent molecules of similar geometry in the asymmetric unit. The crystal packing is stabilized by intermolecular O—H...O hydrogen bonds, which link the molecules into tetramers.
Hui Zeng, Xin-Lin Liu
doaj   +1 more source

Bis(μ2-quinoline-2-carboxylato)-κ3N,O1:O1;κ3O1:N,O1-bis[(acetato-κO)(ethanol-κO)lead(II)]

Acta Crystallographica Section E, 2011
In the centrosymmetric dinuclear title compound, [Pb2(C10H6NO2)2(CH3COO)2(C2H5OH)2], one O atom of the carboxylate group of the quinoline-2-carboxylate anion connects the two PbII atoms.
Ezzatollah Najafi, Mostafa M. Amini, Seik Weng Ng   +2 more
doaj   +1 more source

Purcell’s Three-Link Swimmer: Assessment of Geometry and Gaits for Optimal Displacement and Efficiency

Mathematics, 2021
This paper studies the displacement and efficiency of a Purcell’s three-link microswimmer in low Reynolds number regime, capable of moving by the implementation of a motion primitive or gait.
Cristina Nuevo-Gallardo, José Emilio Traver, Inés Tejado, Blas M. Vinagre   +3 more
doaj   +1 more source

A Multi-Modal Benchmark Dataset for UAV Wireless Communication Research

Drones
Data-centric approaches are increasingly shaping wireless communication research, where the availability and quality of datasets directly influence the reliability of learning-based and model-driven methods. In this context, unmanned aerial vehicle (UAV)
Najmeh Alibabaie, Antonello Calabrò, Eda Marchetti   +2 more
doaj   +1 more source

Cohomological dimension, self-linking, and systolic geometry [PDF]

Israel Journal of Mathematics, 2011
15 pages; to appear in Israel Journal of ...
Dranishnikov, Alexander N., Katz, Mikhail G., Rudyak, Yuli B.   +2 more
openaire   +2 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source