In the title compound, C(31)H(34)N(2)O(4), the two pyrrole rings are bent around the central methyl-ene C atom, making a dihedral angle of 64.83 (7)°. In the crystal, mol-ecules are linked into dimers via N-H⋯O=C hydrogen bonds. These dimers are packed through π⋯π inter-actions between neighboring pyrrole rings with a separation between the mean planes of symmetry-related pyrrole rings of 3.61 ...

The interaction between vacancies and edge dislocations in face centered cubic metals (Al, Au, Cu, Ni) is studied at different length scales. Using empirical potentials and static relaxation, atomic simulations give us a precise description of this interaction, mostly in the case when the separation distance between both defects is small. At larger distances, elasticity theory can be used to pr...

1 The isolated spinal cord of the frog (Rana pipiens) was used to examine the structural requirement for the activity of neutral amino acids. The potencies of the aliphatic amino acids, gamma-aminobutyric acid (GABA), beta-alanine and glycine were compared with the potencies of conformationally restricted cyclopentane and cyclohexane amino acid analogues. Both motoneurone hyperpolarizing and pr...

We investigate the spectral complexity and unique spectral characteristics of urban environments using a comprehensive regional field spectral library of more than 4500 individual spectra. Spectral properties of urban surface materials are presented and interpreted, and their separability is systematically analyzed using the Bhattacharyya distance (B-distance) as a quantitative measure of spect...

This paper presents an efficient method of separating words in handwritten legal amounts on bank cheques based on the spatial gaps between connected components. Currently all typical existing gap measures suffer from poor performance due to the inherent problem of underestimation and overestimation. In order to decrease such burden, a modified version for each of those existing measures is expl...

We study the optical force between two coupled parallel identical nanofibers using rigorous array mode theory. numerically demonstrate for that forces of even modes are attractive, while odd repulsive. examine dependencies on type, fiber radius, light wavelength, and separation distance. show a given power distance, absolute value achieves peak when radius wavelength appropriate.

1. Abstract A simulation analysis of a new method to identify a raw coal separation process to produce concentrate, middle product and refuse is presented in the paper. The washability characteristic of a raw coal, the partition curve of a gravitational separator and separation densities have been identified. The washability characteristic determines the yield and ash content (or other quality ...

s of Past JMU REU Projects • Title. Partial Metric Spaces: Representation and Classification. (2014) Students. Shaun Benvie (University of Connecticut) and Owen Hill (William and Mary) Mentor. Elizabeth Brown Abstract. Partial metrics generalize the standard notion of distance, a metric, to allow for non-zero self-distances. We show how partial metrics can be constructed from standard metrics a...

A simplified model of TIRF optics was used to quantitate the relative membrane/substratum separation distances from the spatial pattern of TIRF image brightness. Phase-contrast and total internal reflection fluorescence microscopy (TIRFM) images were collected of bovine aortic endothelial cells (BAEC) plated onto glass microscope slides for 15 min, 30 min and 24 h. BAEC adherent for 15 min show...

The title compound, [Fe(C6HF4O)(C48H36N4O4)]·C6H12, represents a five-coordinate iron(III) porphyrin complex in a square-pyramidal geometry with a tetra-fluoro-phenolate anion as the axial ligand. The Fe(III) atom is displaced by 0.364 (2) Å from the 24-atom mean plane of the porphyrinate ring towards the tetra-fluoro phenolate anion. The average Fe-N distance is 2.053 (2) Å and the Fe-O distan...