Publications by authors named "K Hammani"

: This research centers on the development and spectroscopic characterization of new quinazolin-4(3H)-one-isoxazole derivatives (). The aim was to investigate the regioselectivity of the 1,3-dipolar cycloaddition involving arylnitriloxides and N-propargylquinazolin-4(3H)-one, and to assess the antioxidant properties of the synthesized compounds. The synthetic approach started with the alkylation of quinazolin-4(3H)-one using propargyl bromide, followed by a 1,3-dipolar cycloaddition reaction.

View Article and Find Full Text PDF

A study was conducted to analyze the essential oil of Pulicaria mauritanica (PMEO) and investigate its antibacterial and antioxidant properties using in-vitro and in-silico methods. The essential oil was extracted using the hydrodistillation technique, and its chemical composition was identified via GC/MS analysis. The chemical composition of the oil shows that the major components of PMEO are carvotanacetone (67.

View Article and Find Full Text PDF

In this work, we describe the synthesis of novel Ruthenium (II) complex-based salen Schiff bases. The obtained Ruthenium (II) complexes are characterized using usual spectroscopic and spectrometric techniques, viz., IR, UV-Vis, NMR (H and C), powder X-ray diffraction, and HRMS.

View Article and Find Full Text PDF

The development of natural substances derived from nature poses a significant challenge as technologies for the extraction and characterization of active principles advance. Hispolon has received a lot of attention in recent years, ascribable to its wide range of biological activities. It is a phenolic molecule that was extracted from several mushroom species such as Phellinus igniarius, Phellinus linteus, Phellinus lonicerinus, Phellinus merrillii, and Inonotus hispidus.

View Article and Find Full Text PDF
Article Synopsis
  • A stabilized single-frequency Brillouin fiber laser operating at 1.06 µm was successfully created using a highly nonlinear fiber ring cavity and a phase-locking loop.
  • The experiment focused on evaluating stimulated Brillouin scattering efficiency across various germanosilicate core fibers, identifying a 21 mol.% core fiber as the best option for the laser.
  • The results include a Stokes lasing threshold of 140 mW, with notable improvements in linewidth narrowing to below 1 kHz and reduced frequency noise compared to the original pump source.
View Article and Find Full Text PDF