Two possible isomers of some 1,3-diaryl-H-benzo[f]chromene have been studied using density functional theory. Structures of E1 and E2 isomers were optimized at the B3LYP and MP2 levels with different basis sets. The total electronic energies show that E2 isomer is about 3-5 kcal/mol more stable than E1 isomer and this energy difference is attributed to the planarity of heterocyclic ring and mor...

Objective: Anti-Mullerian hormone has been indicated as a novel biomarker for ovarian reserve assessment. This study aimed to determine the comparative advantage of serum levels AMH, FSH, LH, E2, and LH/FSH ratio among women with varying menstrual cycles duration menstruation. Material Method: A total 90 subjects, which consisted sixty subjects thirty healthy control, were recruited. Blood samp...

fractions obtained from partitioning of aerial methanolic extract of euphorbia aellenii with chloroform (e2), ethyl acetate (e3), n-butanol (e4) and water (e5) were investigated in vitro for their phytotoxicity, insecticidal, anti-leishmanial, cytotoxicity, antibacterial and antifungal activities. sample e2 appeared to have significant phytotoxic activity. in the insecticidal screening study on...

previous studies have demonstrated the potential of monotherapy with either mesenchymal stem cells (mscs) or estrogen in autoimmune and cuprizone models of multiple sclerosis (ms). the aim of this study was to examine the effects of co-administration of 17β-estradiol (e2) and adipose-derived mesenchymal stem cells (adscs) on remyelination of corpus callosum axons in a cuprizone model of ms. for...

We show that U(ZG), the unit group of integral ring ZG, either satisfies Kazhdan's property (T) or is, up to commensurability, a non-trivial amalgamated product, in case G is finite satisfying some mild conditions. A key step proof construction decompositions elementary E2(O), where O an order rational division algebra, and certain arithmetic groups ?. The methods for latter turn out work much ...

A graph G is well-covered if every maximal independent set of maximum. (k,ℓ)-partition a partition its vertex into k sets and ℓ cliques. (k,ℓ)-well-covered it admits (k,ℓ)-partition. The recognition graphs polynomial-time solvable for the cases (0,1), (0,2), (1,0), (1,1), (1,2), (2,0), hard, otherwise. In sandwich problem property Π, we are given pair G1=(V,E1) G2=(V,E2) with E1⊆E2, asked wheth...