169 research outputs found
Rare-Earth Concentrate Production From Technogenic Mineral Formations
Based on the analysis technology of processing of uranium-containing raw materials, identified potential sources of rare earth elements from among the industrial products and waste: uranium sorption tails, sulfuric acid solutions of heap leaching of uranium, man-made mineral formations from phosphate processing of uranium ores. Based on the analysis technology of processing of uranium-containing raw materials, identified potential sources of rare earth elements from among the industrial products and waste: uranium sorption tails, sulfuric acid solutions of heap leaching of uranium, man-made mineral formations from phosphate processing of uranium ores.
Keywords: rare-earth elements, technogenic mineral formations, leaching, extraction, concentrat
Research on sorption properties of phosphoric production slag-waste
On the territory there are phosphorus-containing wastes - phosphorus slags, the basis of which is volostanite. The study of phosphorus slag as a uranium sorbent is of theoretical and practical interest. In the course of the research, comparable data were obtained on the sorption of the initial and activated slag by different reagents. The optimal conditions for the activation of phosphorus slag in order to increase its sorption properties have been determined
FIT FOR THE FUTURE - MODERNISATION OF MASTER CURRICULUM IN ICT FOR ENHANCING STUDENT EMPLOYABILITY IN BELARUS
The Belarusian ICT industry grows fast, but the full potential has not been reached yet. To increase the ICT industryβs position as a central soil for the Belarusian economy, factors that hinder further growth, need to be identified and improved. Two of such factors are the inefficient dialogue between the ICT industry and higher education and a rather passive role of universities in framing trends on the market. This paper describes the concept and the implementation plan of the Erasmus+-project βModernisation of Master Curriculum in ICT for Enhancing Student Employability in Belarusβ (MaCICT). MaCICT is aimed to enhance the employability of ICT master students, foster entrepreneurship and establishment of SMEs in the ICT industry, and to upscale the position of higher education. For this, MaCICT updates the ICT study programmes to become more labor market and society oriented, practice-based, and student-centered. This forces universities to combine the traditional professional skills and competencies with soft and transferable skills and to focus more on multidisciplinary studies and internationalization of the study environment
Role and application of three-dimensional transthoracic echocardiography in the assessment of left and right ventricular volumes and ejection fraction: a UK nationwide survey
Three-dimensional echocardiography (3DE) imaging has permitted advancements in the quantification of left ventricular (LV) and right ventricular (RV) volumes and ejection fraction. We evaluated the availability of 3DE equipment / analysis software, the integration of 3DE assessment of the LV and RV in routine clinical practice, current training provisions in 3DE, and aimed to ascertain barriers preventing the routine use of 3DE for volumetric analysis. Through the British Society of Echocardiography (BSE) regional representativesβ network, echocardiographers were invited to participate in an open online survey. A total of 181 participants from echocardiography departments in the United Kingdom (UK), the majority from tertiary centres (61%), completed the 28-question survey. For 3DE quantification, 3DE-LV was adopted more frequently than 3DE-RV (48% vs 11%, respectively). Imaging feasibility was a recognised factor in 3DE RV and LV adoption. Many respondents had access to 3D probes (93%). The largest observed barriers to 3DE routine use were training deficiencies, with 83% reporting they would benefit from additional training opportunities and the duration of time permitted for the scan, with 68% of responders reporting allowances of less than the BSE standard of 45β60 min per patient (8% < 30-min). Furthermore, of those respondents who had undertaken professional accreditation, competence in 3DE was not formally assessed in 89%. This UK survey also reported good accessibility to magnetic resonance imaging (72%), which was related to overall 3DE adoption. In summary, although 3DE is now readily available, it remains underutilised. Further training opportunities, integrated formal assessment, improved adoption of BSE minimum recommended scanning times, alongside industry and societal support, may increase 3DE utilisation in routine practice
Creative Techniques in the Framework of Market and Evolution
This paper tries to reframe the man-machine problem, which has frequently changed throughout history. Originally, a machine was a helper of man, but later became its competitor and substitute. As a consequence of this, man has been pushed out of production and possibly, out of life itself. For today, nearly all the manβs functions β except for consumption and creativity β can be furnished by machines. Creativity should have a special place because it is the last βshelterβ of man in the conflict with machine. Almost every other faculty of man has more or less been simulated by technology. There are some key questions to be answered: Whom do the creative techniques serve? Is the target group the men or machines
Revisiting the Kazakhstan natural sorbents modification
Kazakhstan ranks second in the world in natural uranium reserves and a leading position in its production. Hydrometallurgical processing of uranium raw materials results in a significant amount of liquid technogenic wastes containing radionuclides. Sorption cleaning methods for these wastes are the most effective ones. However, the high cost of synthetic sorbents and the low sorption capacity of natural ones is a deterrent to their use. So, to increase the sorption capacity of natural sorbents by their modification is an urgent problem. In this paper, a method to modify Kazakhstani natural zeolite was proposed by us and previously not investigated. Also the data of physicochemical studies of the initial raw material and the modified product was given and the increase in the natural sorbent specific surface in the modification process was demonstrated
Features of morphological and ultrastructural organization of the cornea (literature review)
The human cornea β the anterior fibrous membrane of the eye, is a unique ordered optical-biological system that is avascular, saturated with nerve endings, includes tissue-specific cells, consists mainly of various types of collagen. An exceptional feature of the collagen layers of the cornea, including the collagen plates of the stroma, is transparency, which provides physiological refraction and light transmission due to the stable supporting properties of the cornea. The data on the morphological structure of the cornea, which is an important element of the optical system of the eye, are of considerable interest not only from theoretical, but also from practical positions. This is due to the fact that the identification of the first signs of deviation from normal physiological morphological and ultrastructural criteria in the cornea allows us to establish the nature of its pathological changes, which can be caused by both hereditary predisposition and local and general disorders. It has been shown that the thinning of the layers of the cornea, a decrease in the density of endotheliocytes or keratocytes signal the development of dystrophic processes in it. In addition to evaluating quantitative morphometric data, changes in qualitative ultrastructural indicators play an important role. In particular it was found that a decrease in the density of endothelial cells is accompanied by an increase in their size and a decrease in the cell nucleus. In addition, a number of degenerative pathological conditions are characterized by a decrease in the diameter of collagen fibrils and a change in the density of fibrillary packaging.This literature review presents basic information, features of morphology, ultrastructural organization and functional purpose of layers and cells of the human cornea
ΠΠ°ΡΠΊΠ΅ΡΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠΊΠ·ΠΎΠ³Π΅Π½Π½ΡΡ ΠΈΠ½ΡΠ΅ΡΡΡΠΈΡΠΈΠ°Π»ΡΠ½ΡΡ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ Π»Π΅Π³ΠΊΠΈΡ
The aim of this study was to investigate values of pulmonary fibrosis markers alveomucin and KL-16 and the airway damage marker CC-16 for evaluating activity and progressing of extrinsic interstitial lung diseases (ILD) in dependence on etiology. Methods. Levels of Krebs von den Lungen-6 glycoprotein (KL-6), alveomucin and Clara cell protein (CC16) were measured using the ELISA method. The study involved 13 patients with pneumoconiosis, 26 patients with extrinsic allergic alveolitis (EAA) and 20 patients with extrinsic toxic alveolitis (ETA) both in active and stable status. Results. KL-6 and alveomucin were found to be more valuable markers for assessing activity of extrinsic fibrosing alveolitis compared to CC16. Alveomucin had higher specificity but lower sensitivity compared to KL-6. Conclusion. Alveomucin could be used as a screening test in cases with clinical susceptibility for extrinsic alveolitis. On contrary, KL-6 and alveomucin could be used for assessing therapeutic efficacy of EAA and ETA.Π£ΡΠΎΠ²Π΅Π½Ρ Π³Π»ΠΈΠΊΠΎΠΏΡΠΎΡΠ΅ΠΈΠ½Π° Krebs von den Lungen-6 (KL-6), Π°Π»ΡΠ²Π΅ΠΎΠ»ΠΎΠΌΡΡΠΈΠ½Π° ΠΈ Π±Π΅Π»ΠΊΠ° Π±ΡΠ»Π°Π²ΡΠ°ΡΡΡ
ΠΊΠ»Π΅ΡΠΎΠΊ (club cells) β Π‘Π‘16 ΠΏΡΠΈ ΡΠΊΠ·ΠΎΠ³Π΅Π½Π½ΡΡ
ΠΈΠ½ΡΠ΅ΡΡΡΠΈΡΠΈΠ°Π»ΡΠ½ΡΡ
Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡΡ
Π»Π΅Π³ΠΊΠΈΡ
Π±ΡΠ» ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΈΠΌΠΌΡΠ½ΠΎΡΠ΅ΡΠΌΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°. ΠΠ±ΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ Π±ΠΎΠ»ΡΠ½ΡΠ΅ ΠΏΠ½Π΅Π²ΠΌΠΎΠΊΠΎΠ½ΠΈΠΎΠ·ΠΎΠΌ (n = 13), ΡΠΊΠ·ΠΎΠ³Π΅Π½Π½ΡΠΌ Π°Π»Π»Π΅ΡΠ³ΠΈΡΠ΅ΡΠΊΠΈΠΌ (n = 26) ΠΈ ΡΠΊΠ·ΠΎΠ³Π΅Π½Π½ΡΠΌ ΡΠΎΠΊΡΠΈΡΠ΅ΡΠΊΠΈΠΌ (n = 20) Π°Π»ΡΠ²Π΅ΠΎΠ»ΠΈΡΠΎΠΌ Π² ΠΏΠ΅ΡΠΈΠΎΠ΄ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΈ ΡΠ΅ΠΌΠΈΡΡΠΈΠΈ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ KL-6 ΠΈ Π°Π»ΡΠ²Π΅ΠΎΠ»ΠΎΠΌΡΡΠΈΠ½ ΡΠ²Π»ΡΡΡΡΡ Π±ΠΎΠ»Π΅Π΅ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠ²Π½ΡΠΌΠΈ ΠΌΠ°ΡΠΊΠ΅ΡΠ°ΠΌΠΈ Π΄Π»Ρ ΠΎΡΠ΅Π½ΠΊΠΈ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠΊΠ·ΠΎΠ³Π΅Π½Π½ΡΡ
ΡΠΈΠ±ΡΠΎΠ·ΠΈΡΡΡΡΠΈΡ
Π°Π»ΡΠ²Π΅ΠΎΠ»ΠΈΡΠΎΠ² ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ Π‘Π‘16. ΠΠ»ΡΠ²Π΅ΠΎΠ»ΠΎΠΌΡΡΠΈΠ½ ΠΎΠ±Π»Π°Π΄Π°Π΅Ρ Π±ΠΎΠ»Π΅Π΅ Π²ΡΡΠΎΠΊΠΎΠΉ ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ½ΠΎΡΡΡΡ, Π½ΠΎ ΠΌΠ΅Π½ΡΡΠ΅ΠΉ ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΡΡ, ΡΠ΅ΠΌ KL-6, ΠΈ ΠΌΠΎΠΆΠ΅Ρ ΠΏΡΠΈΠΌΠ΅Π½ΡΡΡΡΡ Π΄Π»Ρ ΡΠΊΡΠΈΠ½ΠΈΠ½Π³ΠΎΠ²ΠΎΠ³ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΈ ΠΏΠΎΠ΄ΠΎΠ·ΡΠ΅Π½ΠΈΠΈ Π½Π° ΡΠΊΠ·ΠΎΠ³Π΅Π½Π½ΡΠ΅ Π°Π»ΡΠ²Π΅ΠΎΠ»ΠΈΡΡ. ΠΠ»Ρ ΠΎΡΠ΅Π½ΠΊΠΈ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ ΡΠΊΠ·ΠΎΠ³Π΅Π½Π½ΡΡ
Π°Π»Π»Π΅ΡΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈ ΡΠΎΠΊΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π°Π»ΡΠ²Π΅ΠΎΠ»ΠΈΡΠΎΠ² ΡΠ΅Π»Π΅ΡΠΎΠΎΠ±ΡΠ°Π·Π½ΠΎ ΠΌΠΎΠ½ΠΈΡΠΎΡΠΈΡΠΎΠ²Π°ΡΡ ΡΡΠΎΠ²Π΅Π½Ρ KL-6 ΠΈ Π°Π»ΡΠ²Π΅ΠΎΠ»ΠΎΠΌΡΡΠΈΠ½Π° ΡΡΠ²ΠΎΡΠΎΡΠΊΠΈ ΠΊΡΠΎΠ²ΠΈ
Efficiency of radiotherapy during local hyperthermia in the treatment of laryngeal and laryngopharyngeal cancer
Cancer of the larynx and laryngopharynx, which is accessible to visual and instrumental examination, remains the most relevant and complicated problem among head and neck malignances as before. Investigations show that the incidence of cancer at these sites in Russia in the last decade has risen from 4.5 to 9.67 %. This is a severe and poor prognostic form of cancer, which is characterized by its nonspecific early clinical manifestations, complex anatomic and topographic structure, and a high rate of regional metastases. The mainstay of treatment for head and neck cancer involves 3 components: surgery, chemotherapy, and radiotherapy (RT), which are performed alone or in combination. The most commonly used technique is combined, frequently crippling due to organ-removing operations. The clinical introduction of current radio modifiers, local and deep hyperthermia systems, is a promising approach to improving the results of treatment, to enhancing the radiation damage of RT, and to achieving the tumor regression sufficient for surgical intervention without augmenting the early and late toxicity inherent in chemoradiation treatment. The results of the performed study of 35 patients with T2β3N0β2M0 laryngeal and laryngopharyngeal cancer proved the high efficiency of local hyperthermia in treating malignancies in this region during both preoperative (grades IIIβ IV therapeutic pathomorphism) and radical beam RT
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