The mathematical properties of nano molecules are an interesting branch of nanoscience for researches nowadays. The periodic open single wall tubulene is one of the nano molecules which is built up from two caps and a distancing nanotube/neck. We discuss how to automatically construct the graph of this molecule and plot the graph by spring layout algorithm in graphviz and netwrokx packages. The...

a Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7. H-6720 Szeged, Hungary 8 b MTA-SZTE Bioinorganic Chemistry Research Group, University of Szeged, Dóm tér 7. H-6720 Szeged, 9 Hungary 10 c Centro de Química e Bioquímica (CQB), Faculdade de Ciências, ULisboa, Campo Grande, Lisbon, Portugal 11 d Centro de Química Estrutural (CQE), Faculdade de Ciências, ULisboa, ...

Topological indices are numerical parameters of a graph which characterize its topology. In this paper the PI, Szeged and Zagreb group indices of the tetrameric 1,3–adamantane are computed.

Katinka Ónodi-Nagy1*, Zsuzsanna Bata-Csörgő1, Erika Varga1, Lajos Kemény1 and Ágnes Kinyó1,2 1Department of Dermatology and Allergology, University of Szeged, Albert Szent-Györgyi Medical Center, Hungary 2Department of Dermatology, Venereology and Oncodermatology, University of Pécs, Hungary *Corresponding author: Katinka Ónodi-Nagy, Department of Dermatology and Allergology, University of Szeg...

background and purpose : there has been no report in which preoperative evaluation of adc for prediction of post therapeutic outcome was presented. the aim of our study was to retrospectively evaluation the use of the apparent diffusion coefficient (adc) for the prediction of malignancy and the outcome of malignant astrocytic tumors. methods: we reviewed mri of 26 male and 14 female patients wi...

The second and third geometric-arithmetic indices GA2(G) and GA3(G) of a graph G are defined, respectively, as ∑ uv∈E(G) √ nu(e,G)nv(e,G) 1 2 [nu(e,G)+nv(e,G)] and ∑ uv∈E(G) √ mu(e,G)mv(e,G) 1 2 [mu(e,G)+mv(e,G)] , where e = uv is one edge in G, nu(e,G) denotes the number of vertices in G lying closer to u than to v andmu(e,G) denotes the number of edges in G lying closer to u than to v. The Sz...

The PI index is a graph invariant defined as the summation of the sums of edges of neu and nev over all the edges of connected graph G, where neu is the number of edges of G lying closer to u than to v and nev is the number of edges of G lying closer to v than to u. The index is very simple to calculate and has disseminating power similar to that of the Wiener and the Szeged indices. The compre...

Optical properties and mineralogical composition of different Saharan mineral dust samples: a laboratory study C. Linke, O. Möhler, A. Veres, Á. Mohácsi, Z. Bozóki, G. Szabó, and M. Schnaiter Forschungszentrum Karlsruhe, Institute of Meteorology and Climate Research, P.O. Box 3640, 76021 Karlsruhe, Germany University of Szeged, Faculty of Natural Sciences, Department of Optics and Quantum Elect...

(I.Ch.:) Department of Algebra and Geometry, Palacký University Olomouc, Tomkova 40, 779 00 Olomouc, Czech Republic (G.Cz. and E.K.H.:) University of Szeged, Bolyai Institute, Szeged, Aradi vértanúk tere 1, HUNGARY–6720. E-mail: [email protected], [email protected], [email protected]