Directed hypercycles have recently been used to model chemical reaction networks. We present an NP-completeness proof for the problem of finding a hypercycle in a directed hypergraph. This sheds some light to some open questions posed by Zeigarnik [A.V. Zeigarnik, On hypercycles and hypercircuits in hypergraphs, in: Discrete Mathematical Chemistry, in: DIMACS Series in, Discrete Mathematics and...

s/Presentations/Talks Previous: 1. Comstock et. al. Keystone Symposia on Nuclear Receptors. Keystone, CO. March 2010. Poster Presentation/Abstract. Current: 1. “SF2/ASF in Prostate Cancer”. CTCC. Thomas Jefferson University; Philadelphia, PA. April 2012. Invited Talk. 2. “SF2 and Splicing in Prostate Cancer”. RNA/Protein (RNP) Discussion Group. University of Pennsylvania; Philadelphia, PA. May ...

Symmetry and chemistry have been in a fruitful interplay, initially in spectroscopy and crystallography, lately in more traditional domains of chemistry, such as reactivity and conformational analysis. A simple phenomenological approach suffices to get an idea about the symmetries of molecules whereas group theoretical approach greatly facilitates the understanding of molecular vibrations, elec...

Sylwia Olsztyńska-Janus1, Marlena Gąsior-Głogowska1,4, Katarzyna Szymborska-Małek2, Bogusława Czarnik-Matusewicz3 and Małgorzata Komorowska1,4 1Institute of Biomedical Engineering and Instrumentation, Wrocław University of Technology, 2Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, 3Faculty of Chemistry, University of Wrocław, 4Regional Specialist Hospital in...

Key Laboratory of Resource Chemistry o Laboratory of Rare Earth Functional Mater Normal University, Shanghai, 200234, P. R. Division of Theoretical Chemistry and Biol Institute of Technology, SE-10691 Stockholm Shanghai Key Laboratory of Functional Mat Science and Technology, Shanghai 200237, † Electronic supplementary information NMR and high resolution mass spectra of Cite this: RSC Adv., 201...