Properties of Degradable Polyhydroxyalkanoates Synthesized from New Waste Fish Oils (WFOs).

The synthesis of PHA was first investigated using WFOs obtained from smoked-sprat heads, substandard fresh sprats, and fresh mackerel heads and backbones. All the WFOs ensured the growth of the wild-type strain B-10646 and the synthesis of PHA, regardless of the degree of lipid saturation (from 0.52 to 0.

In Vitro Study of Biological Activity of Extracts.

is an herbaceous plant widely used in folk medicine. It is rich in phenolic acids and flavonoids, which have pharmacological and medicinal properties, such as anthelmintic, antispasmodic, tonic, antidiabetic, diuretic, and antihypertensive. This study aimed to confirm the presence of biologically active substances in and to determine the pharmacological spectrum of biological activity of extract components.

Study of the Chemical Composition and Biologically Active Properties of Extracts.

or licorice has long been known as a commonly used Ayurvedic herb. This study aims to investigate the effect of extraction methods on the chemical composition and biologically active properties of extract samples. The highest yield of the extract (21.

Identification of Metabolites with Antibacterial Activities by Analyzing the FTIR Spectra of Microalgae.

Biologically active substances from microalgae can exhibit antioxidant, immunostimulating, antibacterial, antiviral, antitumor, antihypertensive, regenerative, and neuroprotective effects. Lipid complexes of microalgae and exhibit antibacterial activity and inhibit the growth of the Gram-positive strain ; the maximum zone of inhibition is 0.7 ± 0.

Isolation of Valuable Biological Substances from Microalgae Culture.

Methods for purifying, detecting, and characterizing protein concentrate, carbohydrates, lipids, and neutral fats from the microalgae were developed as a result of research. Microalgae were collected from natural sources (water, sand, soil of the Kaliningrad region, Russia). Microalgae were identified based on morphology and polymerase chain reaction as Beijer, Gomont, (Nordst.

[Changes in respiratory function and physical performance in middle-aged and old inpatients recovering from COVID-19 after a rehabilitation program.].

Changes in respiratory and physical performance in geriatric inpatients recovering from COVID-19 are of interest for rehabilitation interventions. 56 inpatients (67% women), average age 64±11 years recovering from COVID-19 underwent a comprehensive rehabilitation program (16,9±3,8 days). After the rehabilitation program, the patients showed an improvement in respiratory function: voluntary breath-holding after inhalation - by 19% (p=0,006), breath-holding after exhalation - by 25% (p=0,026), lungs computed tomography (p<0,001); physical performance: handgrip strength - by 14% (p=0,083), preferred walking speed - by 80% (p=0,025); exercise tolerance: distance walked until the first signs of fatigue - by 227% (p<0,001), resting heart rate - by 1% (p=0,011).

Increasing the Efficiency of Food Material Cutting during Inclined and Shear Movements of Knife.

Mathematical models for predicting the resistance forces that are developed during the inclined and sliding cutting of food materials have been developed. The dependence of the actual cutting angle on the angle of inclination and sliding speed of the cutting edge at various sharpening angles have been investigated. For the inclined cutting mode, the dependence of the useful resistance force on the cutting speed has been determined at various angles of inclination of the cutting edge and designed sharpening angles.

Chemical Composition and Content of Biologically Active Substances Found in Growing in Various Territories.

Medicinal plants (, , ) growing in various territories (Kaliningrad, Moscow, and Minsk regions) were the objects of research. This paper presents a study of the chemical composition of these plants. To analyze the qualitative and quantitative composition of biologically active substances, the method of high-performance liquid chromatography was used.

Rheological Properties of Industrial Hot Trub.

The boiling of beer wort with hops results in the formation of a hot trub, a sediment consisting mainly of water-insoluble tannin and protein conglomerates and hop residue. Hot trub is a waste product, removed in a clarifying tank and discarded. The use of barley malt substitutes in recipes for beer is associated with an increase in the amount of generated hot trub.

Measuring of short spin-spin relaxation times distributions using NQR nutation experiments.

Experiments using nutation interferograms and nutation spectra in nuclear quadrupole resonance (NQR) are used for the first time to find the distribution of short spin-spin relaxation times in powder samples. Instead of the traditional method of the inversion of the Laplace transform, the inversion of the integral transformations of nutation interferograms and nutation spectra are used in this work. The use of the distributions of NQR relaxation times can provide new information on dynamic processes in complex molecular systems in the solid state.

[Analysis of food and energy value of the menu of some municipal pre-school educational institutions of the Kaliningrad Region].

Unlabelled: Evaluation of nutrition allows one to foresee the possibility of occurrence of various developmental disorders of children, including diseases associated with the metabolic syndrome. At an early age, not only eating habits are laid, but the foundation for future physical and mental health is created. Lack of attention to compliance with the physiological norms of nutrition can lead to significant economic losses upon the transition of this generation to the status of the economically active population.

A new species of minute beetle (Coleoptera: Clambidae) from Baltic amber (Paleogene, Eocene).

A new species of Clambidae, Clambus helheimricus sp. nov., is described and illustrated from Baltic amber.

First fossil representatives of Pharaxonothinae Crowson (Coleoptera: Erotylidae): indirect evidence for cycads existence in Baltic amber forest.

A new species of Erotylidae, Cycadophila (s. str.) mumia sp.

New Zopheridae (Coleoptera: Tenebrionoidea) from Baltic amber.

Four new zopherid species are described and illustrated from Eocene Baltic amber: Xylolaemus legalovi sp. nov., X.

The study of polymorphic states of paradichlorobenzene by means of nuclear quadrupole resonance relaxometry.

The article describes the results of the experimental study of the molecular crystal of paradichlorobenzene in α- and β-phases by means of NQR-relaxometry with the inversion of Laplace transformation. The anisotropy effect of the pore space of wood on the distribution of times of the spin-lattice relaxation of p-C6H4Cl2 in the pores of pre-impregnated with the molten sample is shown. It was established that the increase in the T1 spin-lattice relaxation time of (35)Cl nucleus in the wood pores (channels) is observed in the case when the radio frequency field B1 is parallel to the tracheid's of wood.

Passandra septentrionaria sp. nov.: the first described species of Passandridae (Coleoptera: Cucujoidea) from Eocene Baltic amber.

Based on two relatively well-preserved specimens from Eocene Baltic amber, Passandra septentrionaria sp. nov. is described and illustrated.

New fossil genus of Silvanidae (Insecta: Coleoptera) from Baltic amber (Tertiary, Eocene).

The fossil silvanid beetle Mistran ot gen. et sp. nov.

Electrolichas circumbalticus gen. et sp. nov. (Coleoptera: Byrrhoidea: Ptilodactylidae) from Baltic amber, the first anchytarsine toed-winged beetle described from Europe.

A new genus and species of Ptilodactylidae, Electrolichas circumbalticus gen. et sp. nov.

First fossil record of Ischaliidae Blair, 1920 (Coleoptera) from Eocene Baltic amber.

Ischalia Pascoe, 1860, the monotypic genus of Ischaliidae, was placed as a subfamily among Pyrochroidae or Anthicidae by earlier authors. Nikitsky (1992) raised the status of Ischaliidae to the family rank. This position has been largely accepted and consequently followed by recent authors dealing with Ischalia, as well as in our paper.

Sucinolivolia torpida--a new genus and species of flea-beetles (Coleoptera: Chrysomelidae: Galerucinae) from Baltic amber.

Sucinolivolia torpida gen. nov. et sp.

First record of Microscapha LeConte from Baltic amber with description of a new species and list of fossil Melandryidae (Coleoptera: Tenebrionoidea).

Microscapha andrzeji sp. nov., the first fossil representative of the genus is described from Eocene Baltic amber.

The riffle beetles (Coleoptera: Elmidae) of the Eocene Baltic amber: Heterelmis groehni sp. nov. and Heterlimnius samlandicus (Bollow, 1940) comb. nov.

The Eocene elmid beetles known from Baltic amber so far are reviewed, and their natural environment is discussed. Palaeoriohelmis samlandica Bollow, 1940 is re-described based on examination of the holotype. The genus Palaeoriohelmis Bollow, 1940 is synonymized with Heterlimnius Hinton, 1935, and Palaeoriohelmis samlandica is transferred to Heterlimnius (H.

New Aderidae (Coleoptera: Tenebrionoidea) from Baltic and Bitterfeld amber.

Nine extinct species and one genus of aderid beetles (Coleoptera: Tenebrionoidea: Aderidae) are described from Baltic and Bitterfeld amber from Germany, Russia (Kaliningrad), Poland, and Denmark. These new species include: Escalerosia igori sp. nov.

A new species of the genus Orchesia Latreille (Coleoptera: Melandryidae) from Baltic amber with a key to species described from fossil resins.

Orchesia (Orchestera) canaliculata sp. nov. is described and illustrated from Eocene Baltic amber (Kaliningrad Region, Russia).

A second Eocene species of death-watch beetle belonging to the genus Microbregma Seidlitz (Coleoptera: Bostrichoidea) with a checklist of fossil Ptinidae.

Based on a well-preserved specimen from Upper Eocene Baltic amber (Kaliningrad region, Russia), Microbregma waldwico sp. nov., the second fossil species of this genus, is described.