Search results for "Planar"
showing 10 items of 412 documents
Enantioselective Strecker Reaction Catalyzed by an Organocatalyst Lacking a Hydrogen-Bond-Donor Function
2007
N-(3-Methoxypropyl)-1,8-naphthalimide
2003
In the title compound, C16H15NO3, the 1,8-naphthalenodicarboximide group is nearly planar and, in the naphthalimide ring system, the characteristic alternating pattern of bond lengths is observed. In the crystal, the molecules are connected by a weak C—H⋯O hydrogen bond and extend in the direction parallel to the b axis.
Image analysis for detecting aggregate gradation in asphalt mixture from planar images
2012
Abstract The mechanical properties of bituminous mixture strongly depend on the gradation of the aggregate that represents the mineral skeleton of the mixture, since for open and gap-graded mixtures, stresses due to vehicles in movement on the pavement are mainly transmitted through their contacts. Internal structure of bituminous mixture is, therefore, of great interest for road and infrastructure engineering and it is appropriate to study it with recently developed image analysis method. The purpose of this study was to finalize an effective analysis of asphalt section image for automatically extracting aggregate gradation without the need of separation of the bitumen from the aggregate. …
"Table 16" of "Tuning and test of fragmentation models based on identified particles and precision event shape data."
1996
Aplanarity distribution. Corrected to final state particles.
"Table 2" of "Studies of quantum chromodynamics with the ALEPH detector"
1997
Charged particle aplanarity distribution.
"Table 17" of "Tuning and test of fragmentation models based on identified particles and precision event shape data."
1996
Planarity distribution. Corrected to final state particles.
"Table 7" of "ATLAS measurements of the properties of jets for boosted particle searches"
2012
The jet planarflow distribution for R=1.0 of high mass (130>M>210 GEV) jets in NPV=1 events corrected to the particle level.
Efficiency in constrained continuous location
1998
Abstract We present a geometrical characterization of the efficient, weakly efficient and strictly efficient points for multi-objective location problems in presence of convex constraints and when distances are measured by an arbitrary norm. These results, established for a compact set of demand points, generalize similar characterizations previously obtained for uncontrained problems. They are used to show that, in planar problems, the set of constrained weakly efficient points always coincides with the closest projection of the set of unconstrained weakly efficient points onto the feasible set. This projection property which are known previously only for strictly convex norms, allows to e…
Structure and Magnetic Properties of the Ferromagnetic Cu3Cl126- Trimer in [(NH3C2H4)3NH]2Cu3Cl14
2004
The crystal structure consists of a strongly hydrogen bonded network of tris(N-ethylammonium)ammonium cations, Cu3Cl12(6)- trimeric species, and Cl- anions. The Cu3Cl12(6)- trimers are formed by two distorted tetrahedral CuCl4(2)- anions linked to a central square planar CuCl4(2)- anion via semicoordinate Cu-Cl...Cu mu1 bridges. The central copper ion shows only small deviations from ideal D4h symmetry, while the terminal copper ions show a mild distortion from D2d symmetry with an average trans Cl-Cu-Cl angle of 136.0 degrees. The semicoordinate linkages provide a ferromagnetic exchange pathway between the copper ions with J/k = 6.91(3) K. Short Cl...Cl contacts (3.67-3.90 angstoms) lead t…