Glass crystallization making red phosphor for high-power warm white lighting.

Rapid development of solid-state lighting technology requires new materials with highly efficient and stable luminescence, and especially relies on blue light pumped red phosphors for improved light quality. Herein, we discovered an unprecedented red-emitting MgAlSiO:Eu composite phosphor (λ = 450 nm, λ = 620 nm) via the crystallization of MgO-AlO-SiO aluminosilicate glass. Combined experimental measurement and first-principles calculations verify that Eu dopants insert at the vacant channel of MgAlSiO crystal with six-fold coordination responsible for the peculiar red emission.

Determination of the Qualitative Composition of Biologically-Active Substances of Extracts of In Vitro Callus, Cell Suspension, and Root Cultures of the Medicinal Plant .

The results of the qualitative composition analysis of the dried biomass extracts of in vitro callus, cell suspension, and root cultures show that the main biologically active substances (BAS) in the medicinal plant, , are 6-C-(1-(4-hydroxyphenyl)ethyl)aromadendrin (25 mg, yield 0.21%), 2-(3,7-dihydroxy-2-(2-hydroxypropan-2-yl)-2,3-dihydrobenzofuran-5-yl)-6,7-dihydroxychroman-4-one (23 mg, yield 0.2%), 2-(3,4-dimethoxyphenyl)-5,7-dimethoxychroman-4-one (175 mg, yield 1.

Role of Metal-Chloride Anions in Photoluminescence Regulations for Hybrid Metal Halides.

Organic-inorganic hybrid metal halides with emissive organic cations are of great interest due to their structural diversity and interesting photophysical properties. Here, we assemble emissive organic cations (EnrofloH) with different metal-chloride anions (PbCl to BiCl to SnCl) to form the new single crystal phases, and thus the photoluminescence properties of the metal halides, including Stokes shift, full width at half-maximum (FWHM), and photoluminescence quantum yield (PLQY) have been studied accordingly. (EnrofloH)SnCl·HO, as an example, possesses narrow FWHM and high PLQY, which are caused by the strong π-π stacking and inter- and intramolecular hydrogen bonds interactions.

Study of the Elastic Properties of the Energetic Molecular Crystals Using Density Functionals with van der Waals Corrections.

We studied the elastic properties of crystalline energetic materials within the framework of density functional theory with van der Waals interactions (DFT-D3(BJ) and rev-vdW-DF2). The full sets of elastic constants were computed. The computed parameters are in good agreement with the experimental data.

Genetic damage in lymphocytes of lung cancer patients is correlated to the composition of the respiratory tract microbiome.

Recent findings indicate that the microbiome may have significant impact on the development of lung cancer by its effects on inflammation, dysbiosis or genome damage. The aim of this study was to compare the sputum microbiome of lung cancer (LC) patients with the chromosomal aberration (CA) and micronuclei (MN) frequency in peripheral blood lymphocytes. In the study, the taxonomic composition of the sputum microbiome of 66 men with untreated LC were compared with 62 control subjects with respect to CA and MN frequency and centromere fluorescence in situ hybridisation analysis.

The Assessment of Radon Emissions as Results of the Soil Technogenic Disturbance.

Rn is a specific indoor-type pollutant that represents a primary radiological hazard as a main source of ionizing radiation (IR) for humans. Coal mining creates new sources of gas that are formed over mines. This process can significantly increase the density of radon flux.

Modern Trends in the In Vitro Production and Use of Callus, Suspension Cells and Root Cultures of Medicinal Plants.

This paper studies modern methods of producing and using callus, suspension cells and root cultures of medicinal plants in vitro. A new solution for natural product production is the use of an alternative source of renewable, environmentally friendly raw materials: callus, suspension and root cultures of higher plants in vitro. The possibility of using hairy root cultures as producers of various biologically active substances is studied.

Study of Morphological Features and Determination of the Fatty Acid Composition of the Microalgae Lipid Complex.

Microalgae are rich in nutrients and biologically active substances such as proteins, carbohydrates, lipids, vitamins, pigments, phycobiliproteins, among others. The lipid composition of the microalgae , , and was screened for the first time. The proposed method for purifying the lipid complex isolated from microalgae's biomass involved dissolving the lipid-pigment complex in -hexane for 4 h and stirring at 500 rpm.

Comprehensive Density Functional Theory Studies of Vibrational Spectra of Carbonates.

Within the framework of the density functional theory (DFT) and the hybrid functional B3LYP by means of the CRYSTAL17 program code, the wavenumbers and intensities of normal oscillations of MgCO, CaCO, ZnCO, CdCO in the structure of calcite; CaMg(CO), CdMg(CO), CaMn(CO), CaZn(CO) in the structure of dolomite; BaMg(CO) in the structure of the norsethite type; and CaCO, SrCO, BaCO, and PbCO in the structure of aragonite were calculated. Infrared absorption and Raman spectra were compared with the known experimental data of synthetic and natural crystals. For lattice and intramolecular modes, linear dependences on the radius and mass of the metal cation are established.

Characterization of domain formation during random sequential adsorption of stiff linear k-mers onto a square lattice.

Using a computer simulation, we have studied the random sequential adsorption of stiff linear k-mers onto a square lattice. Each such particle occupies k adjacent lattice sites. During deposition, the two mutually perpendicular orientations of the particles are equiprobable, hence, a macroscopically isotropic monolayer is formed.

Semi-empirical and calculations for crystals under pressure at fixed temperatures: the case of guanidinium perchlorate.

A simple semi-empirical approach is proposed to calculate structure and properties of crystals under pressure at fixed temperatures. The computed semi-empirical pressure dependencies for guanidinium perchlorate are in good agreement with available experimental data. results within quasi-harmonic approximation for guanidinium perchlorate are also presented.

Medicinal Plants to Strengthen Immunity during a Pandemic.

The development of new effective anti-coronavirus drugs and therapies is important, but it requires significant human, financial and, most importantly, time expenditures. The current pandemic is neither the first nor the last. Humanity has already accumulated considerable survival experience.

Feasibility of removable balloon implant for simultaneous magnetic nanoparticle heating and HDR brachytherapy of brain tumor resection cavities.

Aim: Hyperthermia (HT) has been shown to improve clinical response to radiation therapy (RT) for cancer. Synergism is dramatically enhanced if HT and RT are combined simultaneously, but appropriate technology to apply treatments together does not exist. This study investigates the feasibility of delivering HT with RT to a 5-10mm annular rim of at-risk tissue around a tumor resection cavity using a temporary thermobrachytherapy (TBT) balloon implant.

Can children with DLD acquire a second language in a foreign-language classroom? Effects of age and cross-language relationships.

There is a growing pressure to teach foreign languages as early as possible, and children with Developmental Language Disorder (DLD) are not immune from these pressures. However, current scholarship lacks crucial insights into how children with DLD respond to L2 learning with minimal (classroom) exposure. In this paper, we report the results of a longitudinal study tracing the development of L1 Russian and English as a Foreign Language (EFL) skills in a group of learners with DLD (age of EFL onset: 7;9-12;1).

Investigation of the genotoxic effects of fluoride on a bone tissue model.

Fluorides are thought to be a major cause of osteocarcinogenesis, due to their widespread industrial use, ability to accumulate in bone tissue, and genotoxic and probable carcinogenic properties. In vitro experiments investigating the genotoxic potential of fluorides in bone tissue models can provide valuable indirect information on their involvement in osteocarcinogenesis. Here, we investigated whether sodium fluoride (NaF) has the ability to induce DNA damage and chromosomal abnormalities in human osteosarcoma cells after 48 and 72 h of exposure.

Sea Buckthorn and Rosehip Oils with Chokeberry Extract to Prevent Hypercholesterolemia in Mice Caused by a High-Fat Diet In Vivo.

Dietary supplementation based on sea buckthorn and rosehip oils with added chokeberry extract was studied. We added the dietary supplement to the feed mixtures for laboratory animals. The possible toxicological effects and hypocholesterolemic, hepatoprotective activity of the dietary supplement in vivo were studied.

Future of Chondroprotectors in the Treatment of Degenerative Processes of Connective Tissue.

Osteoarthritis is one of the most common diseases of the connective tissue of the elderly. It was found that most epidemiological studies used the Kellgren and Lawrence system for classification of osteoarthritis, which indicates one of the 5 degrees (0-4) of osteoarthritis in various joints according to the radiographic atlas. It has been proven that chondroprotectors are represented by the following active substances: chondroitin sulfate, glucosamine sulfate or hydrochloride, hyaluronic acid, glycosaminoglycans, extraction preparations from animal or plant raw materials.

Overview of Global Trends in Classification, Methods of Preparation and Application of Bacteriocins.

This paper summarizes information about the division of bacteriocins into classes (Gram-negative bacteria, Gram-positive bacteria, and archaea). Methods for producing bacteriocins have been studied. It is known that bacteriocins, most successfully used today are products of secondary metabolism of lactic acid bacteria.

Exploration of the Structural and Vibrational Properties of the Ternary Molybdate TlBiHf(MoO) with Isolated MoO Units and Tl Conductivity.

The phase relations in the subsolidus region of the TlMoO-Bi(MoO)-Hf(MoO) system were studied with the "intersecting cuts" method. The formation of the novel ternary molybdate TlBiHf(MoO) is found in this ternary system. The compound has a phase transition at = 731 K (Δ = -3.

Microalgae: A Promising Source of Valuable Bioproducts.

Microalgae are a group of autotrophic microorganisms that live in marine, freshwater and soil ecosystems and produce organic substances in the process of photosynthesis. Due to their high metabolic flexibility, adaptation to various cultivation conditions as well as the possibility of rapid growth, the number of studies on their use as a source of biologically valuable products is growing rapidly. Currently, integrated technologies for the cultivation of microalgae aiming to isolate various biologically active substances from biomass to increase the profitability of algae production are being sought.

Fused Filament Fabricated Polypropylene Composite Reinforced by Aligned Glass Fibers.

3D printing using fused composite filament fabrication technique (FFF) allows prototyping and manufacturing of durable, lightweight, and customizable parts on demand. Such composites demonstrate significantly improved printability, due to the reduction of shrinkage and warping, alongside the enhancement of strength and rigidity. In this work, we use polypropylene filament reinforced by short glass fibers to demonstrate the effect of fiber orientation on mechanical tensile properties of the 3D printed specimens.

The Process of Producing Bioethanol from Delignified Cellulose Isolated from Plants of the Miscanthus Genus.

Plants of the Miscanthus genus ( Anderss.) have a unique index of biomass production in relation to the occupied area. Miscanthus plants can be attributed to promising second-generation raw materials for the production of bioethanol and biofuel.

Taxonomic diversity of sputum microbiome in lung cancer patients and its relationship with chromosomal aberrations in blood lymphocytes.

Here we report a pilot-sized study to compare the taxonomic composition of sputum microbiome in 17 newly-diagnosed lung cancer (LC) patients and 17 controls. Another object was to compare the representation of individual bacterial genera and species in sputum with the frequency of chromosomal aberrations in the blood lymphocytes of LC patients and in controls. Both groups were male; average age 56.

[Content of vitamins and mineral substancеs in enriched milk].

The enrichment of food products of industrial production in order to replenish vitamin and mineral deficiency is an actual trend in optimizing the diet of adults and children. Enriched milk as a healthy food is in constant demand. In this regard, monitoring the content of nutrients declared by the manufacturer in fortified milk and identification of its assortment is an important task.