Results 21 to 30 of about 82,883 (302)
(3-Hydroxy-2-{[1-(2-oxidophenyl)ethylidene]amino-κ2O,N}propanoato-κO1)diphenyltin(IV)
Acta Crystallographica Section E, 2010 In the title compound, [Sn(C6H5)2(C11H11NO4)], the tin(IV) atom is penta-coordinated in a distorted trigonal-bipyramidal SnC2NO2 geometry. In the crystal structure, intermolecular O—H...O hydrogen bonds link the molecules into centrosymmetric ...
Yan Qiao +3 more
doaj +1 more source
The place of experimental tasks in geometry teaching: learning from the textbook designs of the early 20th century [PDF]
, 2003 The dual nature of geometry, in that it is a theoretical domain and an area of practical experience, presents mathematics teachers with opportunities and dilemmas.
Taro Fujita +3 more
core +1 more source
New Journal of Physics, 2018 Advances in network geometry pointed out that structural properties observed in networks derived from real complex systems can emerge in the hyperbolic space (HS).
Muscoloni Alessandro +1 more
doaj +1 more source
Tris(ethylenediamine-κ2N,N′)nickel(II) bis(dimethyl phosphate)
Acta Crystallographica Section E, 2012 In the title compound, [Ni(C2H8N2)3][O2P(OCH3)2]2, the NiII atom is six-coordinated in a distorted octahedral geometry by six N atoms from three ethylenediamine ligands. The P atoms of the anions adopt a distorted tetrahedral geometry.
Masoud Rafizadeh +2 more
doaj +1 more source
Influence of the Load Distribution and Sizes on the Wheel Geometry in Passenger Cars
Communications, 2021 This paper discusses impact of changes in the load size and distribution in passenger cars on geometry of the suspension and steering systems. It was found to have a major impact on the road safety. The research was carried out with the four most popular
Jarosław Gonera +2 more
doaj +1 more source
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 +2 more
doaj
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
Transitive Decompositions of Graphs and Their Links with Geometry and Origami [PDF]
The American Mathematical Monthly, 2010 A transitive decomposition of a graph is a partition of the edge or arc set giving a set of subgraphs which are preserved and permuted transitively by a group of automorphisms of the graph. In this paper we give some background to the study of transitive decompositions and highlight a connection with partial linear spaces.
openaire +2 more sources
All Dehn Fillings of the Whitehead Link Complement are Tetrahedron Manifolds [PDF]
, 2022 In this paper we show that Dehn surgeries on the oriented components of the Whitehead link yield tetrahedron manifolds of Heegaard genus ≤ 2. As a consequence, the eight homogeneous Thurston 3–geometries are realized by tetrahedron manifolds of Heegaard ...
Cavicchioli A. +3 more
core +1 more source
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 +2 more
doaj +1 more source