Mechanisms of antioxidant and apoptosis induction may be involved in the management of cancer by medicinal plants. Aim of the study was designed to evaluate anticancer activity of the methanolic extract of Cordia dichotoma leaves (MECD) against a human prostate carcinoma cell line, PC3. Flavonoid content was determined by colorimetric principle and antioxidant activity by various in vitro assay...

In this work we identified and theoretically quantified two photolysis mechanisms of HPALDs (hydroperoxy aldehydes) that result from the isomerization of peroxy radicals in the atmospheric oxidation of isoprene at low/moderate NOx. As a first photolysis mechanism, we show that a fraction of the initially excited S1-state HPALDs isomerizes by a near-barrierless 1,5 H-shift at a rate approaching ...

Ozone is produced in the troposphere by gas-phase oxidation of hydrocarbons and CO catalyzed by hydrogen oxide radicals (HO x ,OH#H#peroxy radicals) and nitrogen oxide radicals (NO x ,NO#NO 2 ). Heterogeneous chemistry involving reactions in aerosol particles and cloud droplets may a!ect O 3 concentrations in a number of ways including production and loss of HO x and NO x , direct loss of O 3 ,...

The reaction of CH3O2 radicals with acetaldehyde on the solid surface of NH4NO3 has been studied in a flow capillary reactor at low pressure and room temperature. The experiments were performed using EPR spectrometer combined with the kinetic method of radicals freezing. Peroxy radicals revealed an oscillation complex behavior during the process regarding to the phenomenon of radicals multiplic...

Plant enzymes are natural substances with almost no side effects and reported on spatial learning histopathological alterations of the hippocampus in senescence-accelerated mice. In mice (SAMP8), this vivo study examined a plant enzyme brain hippocampus, memory cognition. Morris water maze, comparison between control group SAMR1 sham SAMP8 (SAMP8 without administration) showed significant reduc...

The absolute absorption cross-section of the ethyl peroxy radical C2H5O2 in Ã←X˜ electronic transition with peak wavelength at 7596 cm−1 has been determined by method dual wavelengths time resolved continuous wave cavity ring down spectroscopy. radicals were generated from pulsed 351 nm photolysis C2H6/Cl2 mixture presence 100 Torr O2 T = 295 K. detected on one CRDS paths. Two methods have appl...

Abstract. Nighttime NO3-initiated oxidation of biogenic volatile organic compounds (BVOCs) such as monoterpenes is important for the atmospheric formation and growth secondary aerosol (SOA), which has significant impact on climate, air quality, human health. In SOA growth, highly oxygenated molecules (HOM) may be crucial, but their pathways role in have yet to clarified. Among monoterpenes, lim...