Development of Interpolyelectrolyte Complex Based on Chitosan and Carboxymethylcellulose for Stabilizing Sandy Soil and Stimulating Vegetation of Scots Pine ( L.).

The issue of water and wind erosion of soil remains critically important. Polymeric materials offer a promising solution to this problem. In this study, we prepared and applied an interpolyelectrolyte complex (IPEC) composed of the biopolymers chitosan and sodium carboxymethyl cellulose (Na-CMC) for the structuring of forest sandy soils and the enhancement of the pre-sowing treatment of Scots pine ( L.

Free-space combiner based on holographic mirrors for head-mounted displays.

The paper presents an augmented reality display based on the free-space combiner, consisting of two holographic mirrors: flat and spherical. A feature of such a system is a high-reflection coefficient of mirrors up to 90% for one wavelength and a high transmittance to the lumen up to 67% throughout the rest of the visible spectrum, unlike similar solutions implementing principles of polarization or dichroic beam splitting. The recording scheme and calculation of a separate flat holographic mirror and spherical holographic mirror are described.

PENALIZATION OF NON-COMPLIANCE WITH THE COVID-19 VACCINATION: TO BE OR NOT TO BE?

Objective: The aim: This paper is aimed to identify criteria with regard to which government should evaluate whether criminal penalties for non-compliance with the Covid-19 vaccination can be envisaged and reveal the community's attitude to support such criminalization.

Patients And Methods: Materials and methods: This research is based on the analysis of the case-law of the European Court of Human Rights, Supreme Court of the US, and Supreme Court of Ukraine; statistical database, in particular of the World Health Organization and survey of 100 Ukrainian residents. During the research of the stated issue systematic method, formal-legal method, comparative method and case study method were used.

Augmented reality display based on photo-thermo-refractive glass planar waveguide.

An augmented reality display based on a planar waveguide made in photo-thermo-refractive glass had been demonstrated. The monolithic integration of multiplexed volume Bragg gratings with the waveguide platform provided in/out-coupling and image transmission from a portable projector. Design and calculation of the grating configuration was performed.

Material Design and Performance Evaluation of Foam Concrete for Digital Fabrication.

Three-dimensional (3D) printing with foam concrete, which is known for its distinct physical and mechanical properties, has not yet been purposefully investigated. The article at hand presents a methodological approach for the mixture design of 3D-printable foam concretes and a systematic investigation of the potential application of this type of material in digital construction. Three different foam concrete compositions with water-to-binder ratios between 0.