Ethan P. Shapera and André Schleife have constructed, validated, applied machine learning models to search an online database for potential new plasmonic materials (see article number 2200158). The authors predict three high-quality-factor metals: AlCu3 (bottom on the cover, plasma frequency = 9.0 eV), ZnCu (middle, 9.59 ZnGa3 (top, 10.64 eV). Furthermore, is found no interband optical absorpti...

Our aim in this paper is to present a methodology for linearly combining multi neural classifier for cell analysis of forms. Features used for the classification are relative to the text orientation and to its character morphology. Eight classes are extracted among numeric, alphabetic, vertical, horizontal, capitals, etc. Classifiers are multi-layered perceptrons considering firstly global feat...

In the title compound, C(15)H(14)O(4)S, the dihedral angle between the benzene and phenyl rings is 88.74 (10)°. In the crystal, mol-ecules are linked into a three-dimensional network by C-H⋯O hydrogen bonds and π-π stacking inter-actions [centroid-centroid distances = 3.6092 (13)-3.8651 (13) Å].

In the title compound, C(9)H(10)BrN(3)O, the hydrazone portion and aliphatic chain are essentially coplanar [maximum deviation 0.057 (15) Å] and the mean plane makes a dihedral angle of 70.9 (6)° with the benzene ring. The main feature of the crystal structure is the inter-molecular N-H⋯O hydrogen bond, which links mol-ecules into zigzag chains along the a axis. These chains are further stacked...

We thank Bill Fischel, Alan Gerber, Claudia Goldin, Naomi Lamoreaux, Ethan Lewis, Sendhil Mullainathan, Gavin Wright a¡d seminar partícipants at Dartmouth College, Hunter College and the University of Miami for helpful conversations in preparation of this draft. Cascio gratefully acknowledges research support from Dartmouth College, and Washington gratefully acknowledges research support from t...

In the title compound {systematic name: 4,4'-[1,1'-(hydrazinediyl-idene)bis-(ethan-1-yl-1-yl-idene)]bis-(benzene-1,3-diol)}, C16H16N2O4·2C3H7NO, the (E,E)-2',4'-di-hydroxy-aceto-phenone azine mol-ecule is centrosymmetric, the mid-point of the N-N bond being located on an inversion centre. All the non-H atoms of the azine mol-ecule are approximately coplanar, the maximum deviation being 0.017 (2...

For a labelled tree on the vertex set [n] := {1, 2, . . . , n}, define the direction of each edge ij to be i → j if i < j. The indegree sequence of T can be considered as a partition λ ⊢ n − 1. The enumeration of trees with a given indegree sequence arises in counting secant planes of curves in projective spaces. Recently Ethan Cotterill conjectured a formula for the number of trees on [n] with...

RoamX provides support for the user-controlled management of a distributed X desktop, potentially spanning multiple administrative domains. Instead of terminating X-based applications and restarting them manually elsewhere, applications can be suspended and restored selectively on different machines while preserving their context and state. The migration of the GUI is accomplished by an extende...

1,1'-[5-Methyl-1-(4-methyl-phen-yl)-1H-pyrazole-3,4-di-yl)di-ethan-one condenses with thio-semicarbazide in the presence of acetic acid to form the title salt, C(15)H(17)N(4) (+)·NCS(-). The fused-ring system of the cation is almost planar (r.m.s. deviation = 0.020 Å) and the aromatic substituent is aligned at an angle of 48.2 (1)° with respect to the mean plane of the fused-ring system. The N ...

The effect of in vivo administration of disodium ethan-l-hydroxy-1.1-diphosphonate (EHDP) on the mitogenic response of thymocytes or spleen cells were studied in young rats. When rats (2-3 weeks of age) were injected with EHDP (10mg/kg/day) subcutaneously for more than 6 days or injected once with EHDP (100mg/kg) subcutaneously or intraperitoneally, lipopolysaccharide-induced proliferative resp...