abstract background: recent studies have suggested that oxidative stress (os) may have a contribution in the pathogenesis of endometriosis. however, the results of previous studies regarding os in endometriosis are controversial. the objective of this study was to compare the serum levels of os markers in endometriosis versus the control group. methods: this case-control study was carried out o...

Pseudo-lignin, which can be broadly defined as aromatic material that yields a positive Klason lignin value and is not derived from native lignin, has been recently reported to form during the dilute acid pretreatment of poplar holocellulose. To investigate the chemistry of pseudo-lignin formation, GPC, FT-IR and 13C NMR were utilized to characterize pseudo-lignin extracted from dilute-acid pre...

4-(Alkylamino)carbonyl-1-(alkoxy)carbonyl-2-azetidinones (9-11) have been prepared in five steps from 4-(benzyloxy)carbonyl-1-(t-butyldimethyl)silyl-2-azetidinone (1). The beta-lactam reactivity of 9 has been established by 1H NMR experiment. Compound 11 was a good reversible inhibitor of PPE and HLE. Based on theoretical design, series of 2-azetidinones (12-17) and 4-(alkoxy)carbonyl-2-azetidi...

The paper presents the study of polymer composites on epoxy resin matrix, polymerized in environment a constant magnetic field. contained admixtures various forms cellulose – microcrystalline and from waste hemp straw fibers an amount ranging 10 to 30 wt%. Changes mechanical properties due effect field with induction value B = 0.5 T. additionally particles form carbonyl iron,

Several glycating carbonyl compounds have been studied by resorting to the latest Minnesota family of density functional with the objective of determinating their molecular properties. In particular, the chemical reactivity descriptors that arise from conceptual density functional theory and chemical reactivity theory have been calculated through a [Formula: see text]SCF protocol. The validity ...