Reports of graphite pencil lead injuries to the eye are rare. Although graphite is considered to remain inert in the eye, it has been known to cause severe inflammation and damage to ocular structures. We report a case of a 12-year-old girl with intracorneal graphite foreign bodies following a graphite pencil injury.

This article presents a randomized algorithm for leader election which uses bi-directionality of an asynchronous ring to force a node to “commit” to a coin flip by sending it in both directions. The algorithm is fault-detecting in a strong sense: it works if and only if there is a connected segment of [n/21+ 1 non-faulty processors (n = ringsize). Faulty processors may do anything to disrupt th...

In the crystal structure of the title compound, C(13)H(10)ClNO(3)S, the conformation of the N-H bond in the C-SO(2)-NH-C(O) segment is anti to the C=O bond. The dihedral angle between the two aromatic rings is 68.6 (1)°. The mol-ecule is twisted at the S atom with a dihedral angle of 75.7 (1)° between the sulfonyl benzene ring and the -SO(2)-NH-C-O segment; the dihedral angle between the latter...

In the title compound, C(13)H(10)N(2)O(5)S, the C=O bond in the -SO(2)-NH-CO- segment is anti to the meta-nitro group in the benzoyl ring, while the N-C bond has gauche torsions with respect to the S=O bonds. The molecule is twisted at the N atom with a dihedral angle of 79.9 (2)° between the sulfonyl benzene ring and the -SO(2)-NH-CO- segment. Furthermore, the dihedral angle between the benzen...