Renewable energy transition in Europe in the context of renewable energy transition processes in the world. A review.

Both the global and European energy sectors have been undergoing a deep transition for several years, associated with a reduction in the overall share of conventional coal-based energy in favor of new technologies, especially energy from renewable sources (RES). This transition is moving from centralized production towards distributed technologies and from providing only energy to end users towards combining innovative products and services with it. Electricity consumers are becoming prosumers connected to the grid and generating an increasing amount of energy.

Varicella-zoster virus hepatitis - a rare complication of primary infection in immunocompetent children?

Aim Of The Study: This research aimed to investigate the incidence and course of varicella-zoster virus hepatitis in immunocompetent children.

Material And Methods: Medical charts of children hospitalised between 2019 and 2022 (excluding the period of the COVID-19 pandemic) due to varicella were retrospectively analysed and compared.

Results: In total, 216 children were included in the analysis.

Tests of Uniaxial Compression of Single Grains.

Tests of the uniaxial compression of single grains were performed in a specially designed press, which allowed the recording of an applied load in regard to the time and observation of occurring phenomena in a polarization assay. Three types of grains were tested: quartz sand, glass granules, and crushed glass. The strength tests showed different mechanisms of grain damage depending on the type of grain.

Light-induced selectivity in an exemplary photodimerization reaction of varied azaanthracenes.

Currently, there is intense interest in light-driven chemical reactions, including photocatalytic processes, photopolymerization and photodimerization. The need for regiocontrol in such reactions is obvious, especially in cases where many products can potentially be formed. Here, the photodimerization involving various azaanthracenes is presented for the first time.

Silver Nanoparticles Improve Fluorophore Photostability: Application to a Hypericin Study.

Protection against the negative effects of solar radiation involves using cosmetics with a UV filter, but visible radiation can also have negative effects. We use dietary supplements and take medications; unfortunately, many of them contain substances that degrade under the influence of visible light, which transform into chemical compounds harmful to health. Manufacturers often include information on the prohibition of exposure to sunlight on the packaging, but consumers often do not read the product leaflet.