The Schiff base, C(18)H(20)N(2)O(2), which lies about an inversion centre, adopts a linear conformation. The mol-ecules are packed by C-H⋯π inter-actions, forming a two-dimensional supra-molecular network.

background :inversion recovery (ir) pulse sequences can generate t1-weighted images with a different range of inversion time (ti) to suppress or null the signal intensity (si) for a specified tissue. in this study, we aimed to investigate the effect of ti values on the concentration of the contrast agent, which leads to a minimum signal intensity, using an inversion recovery t1-weighted 3-dimen...

Geometric inversion is applied to two-dimensional Stokes flow in the objective to find new Stokes flow solutions. The principle of this method and the relations between the reference and inverse fluid velocity fields are presented. They are followed by applications to the flow between two parallel plates induced by a rotating or a translating cylinder. Thus hydrodynamic characteristics of flow ...

In the title compound, [Ni(C13H17N3)2]Cl2·3.5H2O, the geom-etry of the NiN6 complex cation is slightly distorted octa-hedral, with a facial arrangement of the two tridentate N-[2-(di--methyl-amino)-eth-yl]quinolin-8-amine ligands around the metal ion. The asymmetric unit consists of two independent complex half-mol-ecules located on centres of inversion, together with two chloride counter-anion...

the compact gravity inversion including the minimization of moment of inertia has been applied to determine the geometry of anomalous bodies which cause much more depth esolution. the new algorithm is based on lewi's (1996) procedure including the minimum moment of inertia. the method is used with good results to several 3-dimensional synthetic models and real examples. the advantage of us...

In the crystal structure of the title complex, [Cu(C(6)H(4)N(5))(2)(CH(3)OH)(2)](n), the Cu(II) cation lies on an inversion center and is coordinated by four 5-(3-pyrid-yl)tetra-zolate anions and two methanol mol-ecules in an elongated distorted CuN(4)O(2) octa-hedral geometry. Each 5-(3-pyrid-yl)tetra-zolate anion bridges two Cu(II) cations, forming a two-dimensional polymeric complex with (4,...

A general initial-boundary value problem of one-dimensional transient wave propagation in a multi-layered elastic medium due to arbitrary boundary or interface excitations (either prescribed tractions or displacements) is considered. Laplace transformation technique is utilised and the Laplace transform inversion is facilitated via an unconventional method, where the expansion of complex-valued...