19 research outputs found

    REVIEW OF METHODS AND RESULTS OF EXPERIMENTAL INVESTIGATIONS OF STEEL AND STEEL CONCRETE STRUCTURES UNDER SPECIAL IMPACT

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    The modern experimental studies review of the resistance of the most common steel and steel-concrete building structures in emergency conditions is performed. The main directions of experimental design are revealed under certain types of special influences that affect the mechanical safety of structures. An overview of the experimental studies of steel and steelconcrete lamellar-structural elements survivability in local damage to columns, described in the modern scientific literature is presented. Tests of lamellar and light steel thin-walled structures on the effect of cyclic loading are described. Data on the limit static loads of beams and spatial frame systems are given. Attention to testing of structures for combined impact and explosive effects is paid. Photos and diagrams of laboratory samples and objects are given. As a result of the review, a conclusion is made about the prospects for further studies of the survivability of steel structures under emergency actions. It is noted, that now there is a need to expand the nomenclature of standardized types of emergency actions. That will allow to more effectively carrying out a complex of preventive measures that let us to increase the mechanical safety of structures and minimize potential risks of material and social losses in the event of emergencies

    Relations between physical and chemical properties of melanine pigments in wood decaying fungi and their antioxidant activity

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    The authors acknowledge the work support by RFBR, Russia (Project № 19-516-45006) and DST, India (INT/RUS/RFBR/363) and the Ural Federal University Competitiveness Enhancement Program, Act 211 Government of the Russian Federation (сontract № 02.A03.21.0006)

    Biologically Active Substances in Fruit Bodies of Wood Decomposing Fungi

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    The relative content of biologically active substances in the extracts of wood decaying fungi was studied using GC-MS. The results showed that the real tinder (Fomes fomentarius (L.) Fr.) contains up to 18% fatty acids, 51.6% steroids and 8.35% triterpene compounds. The nest fungus (Hapalopilus nidulans (Fr.) P. Karst.) contains 32.7% of fatty acids, 9.8% of steroid substances and 27.0% of tetracyclic triterpenoids. Chaga (Inonotus obliguus (Ach. ex. Pers.) Pilat) is characterized by the presence of 14% fatty acids, 11.6% of which are unsaturated; 2.4% of ergosterol, and 30% of betulin. A distinctive feature of the extract from the birch sponge (Piptoporus betulinus (Bull.) P. Karst.) is the presence of 67.9% arabitol, and the absence of steroid and triterpene compounds. Bordered tinder fungus (Fomitopsis pinicola (Sw.) P. Karst.), causing brown rot of wood, contains 30.15% ergosterol, which is a provitamin form of vitamin D2. The tinder fungus extract (Trichaptum biforme (Fr.) Ryvarden) contains 67.8% fatty acids, of which 50.0% are unsaturated fatty acids. The extract from the humpback tinder fungus (Trametes gibbosa (Pers.) Fr.) contains 34.9% fatty acids, 9.76% steroids, and 27.06% terpenoid compounds. © 2022 Author(s)

    Biologically active substances in fruit bodies of wood decomposing fungi

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    The authors acknowledge the work support by RFBR, Russia (Project № 19-516-45006) and DST, India (INT/RUS/RFBR/363) and the Ural Federal University Competitiveness Enhancement Program, Act 211 Government of the Russian Federation (сontract № 02.A03.21.0006)

    The use of complex treatment of corn seeds with oligochitosan and melanin to stimulate growth processes

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    Pre-sowing treatment of seeds of hybrid Polesskiy 185 with aqueous solutions of oligochitosan (OX) with molecular weight (MW) 28.6 kDa, melanin from chaga, and their complex was used to stimulate the growth processes of corn in laboratory experiments. Treatment of seeds with oligochitosan solutions with concentrations: 0.0005%, 0.001%, 0.005%, 0.01% stimulated an increase in the mass of seedlings and root growth. Melanin also stimulates growth processes. Complex treatment of corn seeds with oligochitosan in combination with melanin has the maximum stimulating effect on the morphometric parameters of seedlings. Stimulation of the growth processes of corn seedlings under the influence of the studied substances is associated with an increase in the synthesis of steroid phytohormones. © 2021 Author(s)

    UCRAID (Ukrainian Citizen and refugee electronic support in Respiratory diseases, Allergy, Immunology and Dermatology) action plan

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    Eight million Ukrainians have taken refuge in the European Union. Many have asthma and/or allergic rhinitis and/or urticaria, and around 100,000 may have a severe disease. Cultural and language barriers are a major obstacle to appropriate management. Two widely available mHealth apps, MASK-air® (Mobile Airways Sentinel NetworK) for the management of rhinitis and asthma and CRUSE® (Chronic Urticaria Self Evaluation) for patients with chronic spontaneous urticaria, were updated to include Ukrainian versions that make the documented information available to treating physicians in their own language. The Ukrainian patients fill in the questionnaires and daily symptom-medication scores for asthma, rhinitis (MASK-air) or urticaria (CRUSE) in Ukrainian. Then, following the GDPR, patients grant their physician access to the app by scanning a QR code displayed on the physician's computer enabling the physician to read the app contents in his/her own language. This service is available freely. It takes less than a minute to show patient data to the physician in the physician's web browser. UCRAID—developed by ARIA (Allergic Rhinitis and its Impact on Asthma) and UCARE (Urticaria Centers of Reference and Excellence)—is under the auspices of the Ukraine Ministry of Health as well as European (European Academy of Allergy and Clinical immunology, EAACI, European Respiratory Society, ERS, European Society of Dermatologic Research, ESDR) and national societies

    Concepts for the development of person-centred, digitally-enabled, Artificial Intelligence-assisted ARIA care pathways (ARIA 2024)

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    The traditional healthcare model is focused on diseases (medicine and natural science) and does not acknowledge patients' resources and abilities to be experts in their own life based on their lived experiences. Improving healthcare safety, quality and coordination, as well as quality of life, are important aims in the care of patients with chronic conditions. Person-centred care needs to ensure that people's values and preferences guide clinical decisions. This paper reviews current knowledge to develop (i) digital care pathways for rhinitis and asthma multimorbidity and (ii) digitally-enabled person-centred care (1). It combines all relevant research evidence, including the so-called real-world evidence, with the ultimate goal to develop digitally-enabled, patient-centred care. The paper includes (i) Allergic Rhinitis and its Impact on Asthma (ARIA), a two-decade journey, (ii) Grading of Recommendations, Assessment, Development and Evaluation (GRADE), the evidence-based model of guidelines in airway diseases, (iii) mHealth impact on airway diseases, (iv) from guidelines to digital care pathways, (v) embedding Planetary Health, (vi) novel classification of rhinitis and asthma, (vi) embedding real-life data with population-based studies, (vii) the ARIA-EAACI strategy for the management of airway diseases using digital biomarkers, (viii) Artificial Intelligence, (ix) the development of digitally-enabled ARIA Person-Centred Care and (x) the political agenda. The ultimate goal is to propose ARIA 2024 guidelines centred around the patient in order to make them more applicable and sustainable

    Forming A Structural Design USING genetic algorithm and Delaunay tetrahedral partition

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    The computing circuit for finding the optimal shape of structural design, based on the use of algorithms Delaunay tetrahedral partition with constraints and evolutionary modeling is developed. The structure design is synthesized on a set of given set of nodes in a fixed number of rods. Formed structures are optimized using a genetic algorithm the criterion of minimum weight design. The example of synthesis in terms of a rectangular plate illustrates the structural performance of the proposed approach to forming rod systems of this type
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