Results 21 to 30 of about 756,745 (314)
Digital radiography image quality evaluation using various phantoms and software
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose To investigate the effect of the exposure parameters on image quality (IQ) metrics of phantom images, obtained automatically using software or from visual evaluation. Methods Three commercial phantoms and a homemade phantom constructed according to the instructions given in the IAEA Human Health Series No.
Ioannis A. Tsalafoutas +4 more
wiley +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
The motivic fundamental group of the projective line minus three points and the theorem of Siegel [PDF]
, 2004 In this paper, we establish a link between the structure theory of the pro-unipotent motivic fundamental group of the projective line minus three points and Diophantine geometry.
Kim, Minhyong
core +1 more source
(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
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
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
Plabic links, quivers, and skein relations [PDF]
arXiv, 2022 We study relations between cluster algebra invariants and link invariants. First, we show that several constructions of positroid links (permutation links, Richardson links, grid diagram links, plabic graph links) give rise to isotopic links. For a subclass of permutations arising from concave curves, we also provide isotopies with the corresponding ...
arxiv
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
Compact phase space, cosmological constant, discrete time [PDF]
, 2015 We study the quantization of geometry in the presence of a cosmological constant, using a discretiza- tion with constant-curvature simplices. Phase space turns out to be compact and the Hilbert space finite dimensional for each link.
Rovelli, Carlo, Vidotto, Francesca
core +3 more sources