The reactions of ruthenium trichloride with Schiff bases derived from sulpha drugs in 1:2 molar ratio leads to the formation of a new series of coordination compounds of type [Ru(L) 2 (H 2 O)Cl]. The Schiff bases used here are o-Vanillin sulphanilamide (oVSaH), o-Vanillin sulphamerazine (oVSmrzH), salicylaldehyde sulphanilamide (SdSaH), salicylaldehyde sulphamerazine (SdSmrzH), 2-hydroxy-1-naph...

A series of anionic heavy lanthanide complexes, involving the N-salicylideneglycinato(2-) Schiff base ligand (salgly) and having the general formula K[Ln(salgly)₂(H₂O)₂]∙H₂O (1-6), where Ln stands for Gd, Tb, Dy, Ho, Er and Tm, was prepared using the one-pot template synthesis. The complexes were thoroughly characterized by elemental and Thermogravimetric/Differential Thermal Analyses (TG/DTA),...

in this paper, a numerical efficient method is proposed for the solution of time fractionalmobile/immobile equation. the fractional derivative of equation is described in the caputosense. the proposed method is based on a finite difference scheme in time and legendrespectral method in space. in this approach the time fractional derivative of mentioned equationis approximated by a scheme of order o...

Application o f elevated pressure (up to 1200 bars) results in a bathochrom ic shift o f the absorption bands o f photosynthetic pigments. The photosynthetic systems studied include: photosystem I particles, chloroplasts, acetone extracts o f chloroplasts, A U T particles and light harvesting particles o f Rh. sphaeroides, light harvesting particles o f R26. Sim ilar spectral changes are observ...

The alkaloids present in the flowers of Erythrina stricta have been isolated and characterized by spectroscopic methods. A new alkaloid 11-acetyl erysotrine has been isolated and its structure established by spectral studies (UV, IR, 1H NMR and HRMS).

A cut sparsifier for an undirected graph is a sparse graph, which preserves up to multiplicative (1 ") factor the values of all cuts. It was shown in [BK96] how to construct cut sparsifiers with O(n logn="2) edges in near-linear time. In [ST11] Spielman and Teng considered much stronger notion: spectral sparsification. A spectral sparsifier is a sparse graph, which (almost) preserves the Laplac...