Dynamics of optical properties of sequentially diluted lucigenin aqueous solutions according to luminescence data.

The article discusses optical properties (luminescence) of diluted (24 dilution factor) lucigenin () aqueous solutions. Six series of aqueous solutions, with 50 samples in each series, were studied. The series were diluted on different days within random schedules, following a unified procedure: the first sample in all the series was the (C = 8.

Exceptional warming over the Barents area.

In recent decades, surface air temperature (SAT) data from Global reanalyses points to maximum warming over the northern Barents area. However, a scarcity of observations hampers the confidence of reanalyses in this Arctic hotspot region. Here, we study the warming over the past 20-40 years based on new available SAT observations and a quality controlled comprehensive SAT dataset from the northern archipelagos in the Barents Sea.

Synthesis of Silver Nanoparticles Using Reactive Water-Ethanol Extracts from .

Using the radiation-chemical simulation method of free radical reactions with 2,2-diphenyl-1-picrylhydrazyl, we were able to show high antiradical activity of water-ethanol extracts from . This will allow for the creation of new bioactive antioxidants based on them. The formation of silver nanoparticles (Ag-NP) was determined using the silver-ion reduction process by extracts.

Radiation Chemical Investigation of Antioxidant Activity of Biologically Important Compounds from Plant Materials.

Radiation chemical modeling of redox reactions of biologically active compounds from plant materials showed that coumarins possess strong antiradical properties. Data confirming the radioprotective properties of these compounds were obtained. Antioxidant activity has been shown for specific medicinal plant extracts- and cormus.