51 research outputs found

    Joule heating effects on quartz particle melting in high-temperature silicate melt

    Get PDF
    This work is mostly focused on the melting process model simulation of quartz particles having the radius within the range of 10{-6}-10{-3} m. The melting process is simulated accounting for the heat generation at an electric current passage through a quartz particle

    Plasma treatment of heat-resistant materials

    Get PDF
    Refractory lining of thermal generating units is exposed to chemical, thermal, andmechanical attacks. The degree of fracture of heat-resistant materials depends on the chemicalmedium composition, the process temperature and the material porosity. As is known, a shorttermexposure of the surface to low-temperature plasma (LTP) makes possible to createspecific coatings that can improve the properties of workpieces. The aim of this work is toproduce the protective coating on heat-resistant chamotte products using the LTP technique.Experiments have shown that plasma treatment of chamotte products modifies the surface, anda glass-ceramic coating enriched in mullite is formed providing the improvement of heatresistance. For increasing heat resistance of chamotte refractories, pastes comprising mixturesof Bacor, alumina oxide, and chamot were applied to their surfaces in different ratios. It isproved that the appropriate coating cannot be created if only one of heat-resistant componentsis used. The required coatings that can be used and recommended for practical applications areobtained only with the introduction of powder chamot. The paste composition of 50% chamot,25% Bacor, and 25% alumina oxide exposed to plasma treatment, has demonstrated the mostuniform surface fusion

    Non-equilibrium melting processes of silicate melts with different silica content at low-temperature plasma

    Get PDF
    This article is devoted to research the possibility of high-temperature silicate melts producing from different silica content at low-temperature plasma taking into account non-equilibrium melting processes

    Non-equilibrium melting processes of silicate melts with different silica content at low-temperature plasma

    Get PDF
    This article is devoted to research the possibility of high-temperature silicate melts producing from different silica content at low-temperature plasma taking into account non-equilibrium melting processes

    Plasma technologies application for building materials surface modification

    Get PDF
    Low temperature arc plasma was used to process building surface materials, such as silicate brick, sand lime brick, concrete and wood. It was shown that building surface materials modification with low temperature plasma positively affects frost resistance, water permeability and chemical resistance with high adhesion strength. Short time plasma processing is rather economical than traditional processing thermic methods. Plasma processing makes wood surface uniquely waterproof and gives high operational properties, dimensional and geometrical stability. It also increases compression resistance and decreases inner tensions level in material

    Joule heating effects on quartz particle melting in high-temperature silicate melt

    Get PDF
    This work is mostly focused on the melting process model simulation of quartz particles having the radius within the range of 10{-6}-10{-3} m. The melting process is simulated accounting for the heat generation at an electric current passage through a quartz particle

    ΠœΡƒΠ»ΡŒΡ‚ΠΈΠ΄ΠΈΡΡ†ΠΈΠΏΠ»ΠΈΠ½Π°Ρ€Π½Π°Ρ концСпция Π² диагностикС ΠΈ Π»Π΅Ρ‡Π΅Π½ΠΈΠΈ Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… с заболСваниями слизистой ΠΎΠ±ΠΎΠ»ΠΎΡ‡ΠΊΠΈ полости Ρ€Ρ‚Π°

    Get PDF
    ЗаболСвания слизистой ΠΎΠ±ΠΎΠ»ΠΎΡ‡ΠΊΠΈ полости Ρ€Ρ‚Π° ΠΈ красной ΠΊΠ°ΠΉΠΌΡ‹ Π³ΡƒΠ± ΠΈΠΌΠ΅ΡŽΡ‚ затруднСния Π² диагностикС, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ обусловлСны ΠΈΠ½Π΄ΠΈΠ²ΠΈΠ΄ΡƒΠ°Π»ΡŒΠ½Ρ‹ΠΌΠΈ различиями Π² строСнии; ΠΌΠ½ΠΎΠ³ΠΎΠΎΠ±Ρ€Π°Π·ΠΈΠ΅ΠΌ симптомов Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ; проявлСниями Π² полости Ρ€Ρ‚Π° симптомов ΠΈ синдромов ΠΎΠ±Ρ‰ΠΈΡ… Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ; сходством ΠΌΠ½ΠΎΠ³ΠΈΡ… клиничСских проявлСний, элСмСнтов пораТСния ΠΏΡ€ΠΈ Ρ€Π°Π·Π½Ρ‹Ρ… заболСваниях; динамичСским ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ клиничСской ΠΊΠ°Ρ€Ρ‚ΠΈΠ½Ρ‹ ΠΏΠΎΠ΄ дСйствиСм Π²Π½Π΅ΡˆΠ½ΠΈΡ… ΠΈ Π²Π½ΡƒΡ‚Ρ€Π΅Π½Π½ΠΈΡ… Ρ„Π°ΠΊΡ‚ΠΎΡ€ΠΎΠ²; прСимущСствСнно хроничСским Ρ€Π΅Ρ†ΠΈΠ΄ΠΈΠ²ΠΈΡ€ΡƒΡŽΡ‰ΠΈΠΌ Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ΠΌ ряда Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ; сочСтанным Π½Π°Π»ΠΈΡ‡ΠΈΠ΅ΠΌ ряда Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ (красный плоский лишай, Π³Ρ€ΠΈΠ±ΠΊΠΎΠ²Ρ‹ΠΉ стоматит, лСйкоплакия ΠΈ Π΄Ρ€.); ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ Ρ‚Ρ€Π°Π΄ΠΈΡ†ΠΈΠΎΠ½Π½Ρ‹Ρ… Ρ„ΠΎΡ€ΠΌ тСчСния Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ, ΠΈΡ… ΠΏΠΎΠ»ΠΈΠΌΠΎΡ€Ρ„Π½ΠΎΠΉ клиничСской симптоматикой Π² соврСмСнных условиях ΠΈ Π΄Ρ€. Диагностика Π² Π±ΠΎΠ»ΡŒΡˆΠΈΠ½ΡΡ‚Π²Π΅ случаСв связана с Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎΡΡ‚ΡŒΡŽ ΡƒΠ³Π»ΡƒΠ±Π»Π΅Π½Π½ΠΎΠ³ΠΎ исслСдования ΠΈ лСчСния Ρƒ Π²Ρ€Π°Ρ‡Π°-интСрниста. Π’ связи с этим цСлСсообразны мСТдисциплинарный ΠΏΠΎΠ΄Ρ…ΠΎΠ΄, созданиС ΠΊΠΎΠ½ΡΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΈΠ²Π½ΠΎΠ³ΠΎ Ρ†Π΅Π½Ρ‚Ρ€Π°, Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° способов эффСктивной Ρ€Π°Π½Π½Π΅ΠΉ диагностики ΠΈ лСчСния Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ слизистой ΠΎΠ±ΠΎΠ»ΠΎΡ‡ΠΊΠΈ полости Ρ€Ρ‚Π°; Π—Π°Ρ…Π²ΠΎΡ€ΡŽΠ²Π°Π½Π½Ρ слизової ΠΎΠ±ΠΎΠ»ΠΎΠ½ΠΊΠΈ ΠΏΠΎΡ€ΠΎΠΆΠ½ΠΈΠ½ΠΈ Ρ€ΠΎΡ‚Π° ΠΉ Ρ‡Π΅Ρ€Π²ΠΎΠ½ΠΎΡ— облямівки Π³ΡƒΠ± ΠΌΠ°ΡŽΡ‚ΡŒ ускладнСння Π² діагностиці, які Π·ΡƒΠΌΠΎΠ²Π»Π΅Π½Ρ– Ρ–Π½Π΄ΠΈΠ²Ρ–Π΄ΡƒΠ°Π»ΡŒΠ½ΠΈΠΌΠΈ відмінностями Π² Π±ΡƒΠ΄ΠΎΠ²Ρ–; різноманіттям симптомів Π·Π°Ρ…Π²ΠΎΡ€ΡŽΠ²Π°Π½ΡŒ; проявами Π² ΠΏΠΎΡ€ΠΎΠΆΠ½ΠΈΠ½Ρ– Ρ€ΠΎΡ‚Π° симптомів Ρ– синдромів Π·Π°Π³Π°Π»ΡŒΠ½ΠΈΡ… Π·Π°Ρ…Π²ΠΎΡ€ΡŽΠ²Π°Π½ΡŒ; ΠΏΠΎΠ΄Ρ–Π±Π½Ρ–ΡΡ‚ΡŽ Π±Π°Π³Π°Ρ‚ΡŒΠΎΡ… ΠΊΠ»Ρ–Π½Ρ–Ρ‡Π½ΠΈΡ… проявів, Π΅Π»Π΅ΠΌΠ΅Π½Ρ‚Ρ–Π² ураТСння ΠΏΡ€ΠΈ Ρ€Ρ–Π·Π½ΠΈΡ… Π·Π°Ρ…Π²ΠΎΡ€ΡŽΠ²Π°Π½Π½ΡΡ…; Π΄ΠΈΠ½Π°ΠΌΡ–Ρ‡Π½ΠΎΡŽ Π·ΠΌΡ–Π½ΠΎΡŽ ΠΊΠ»Ρ–Π½Ρ–Ρ‡Π½ΠΎΡ— ΠΊΠ°Ρ€Ρ‚ΠΈΠ½ΠΈ ΠΏΡ–Π΄ Π΄Ρ–Ρ”ΡŽ Π·ΠΎΠ²Π½Ρ–ΡˆΠ½Ρ–Ρ… Ρ– Π²Π½ΡƒΡ‚Ρ€Ρ–ΡˆΠ½Ρ–Ρ… Ρ„Π°ΠΊΡ‚ΠΎΡ€Ρ–Π²; ΠΏΠ΅Ρ€Π΅Π²Π°ΠΆΠ½ΠΎ Ρ…Ρ€ΠΎΠ½Ρ–Ρ‡Π½ΠΈΠΌ Ρ€Π΅Ρ†ΠΈΠ΄ΠΈΠ²ΡƒΡŽΡ‡ΠΈΠΌ ΠΏΠ΅Ρ€Π΅Π±Ρ–Π³ΠΎΠΌ Π½ΠΈΠ·ΠΊΠΈ Π·Π°Ρ…Π²ΠΎΡ€ΡŽΠ²Π°Π½ΡŒ; ΠΏΠΎΡ”Π΄Π½Π°Π½Ρ–ΡΡ‚ΡŽ Π½ΠΈΠ·ΠΊΠΈ Π·Π°Ρ…Π²ΠΎΡ€ΡŽΠ²Π°Π½ΡŒ (Ρ‡Π΅Ρ€Π²ΠΎΠ½ΠΈΠΉ плСскатий лишай, Π³Ρ€ΠΈΠ±ΠΊΠΎΠ²ΠΈΠΉ стоматит, лСйкоплакія Ρ‚Π° Ρ–Π½.); Π·ΠΌΡ–Π½ΠΎΡŽ Ρ‚Ρ€Π°Π΄ΠΈΡ†Ρ–ΠΉΠ½ΠΈΡ… Ρ„ΠΎΡ€ΠΌ ΠΏΠ΅Ρ€Π΅Π±Ρ–Π³Ρƒ Π·Π°Ρ…Π²ΠΎΡ€ΡŽΠ²Π°Π½ΡŒ, Ρ—Ρ…Π½ΡŒΠΎΡŽ ΠΏΠΎΠ»Ρ–ΠΌΠΎΡ€Ρ„Π½ΠΎΡŽ ΠΊΠ»Ρ–Π½Ρ–Ρ‡Π½ΠΎΡŽ ΡΠΈΠΌΠΏΡ‚ΠΎΠΌΠ°Ρ‚ΠΈΠΊΠΎΡŽ Π² сучасних ΡƒΠΌΠΎΠ²Π°Ρ… Ρ‚Π° Ρ–Π½. Діагностика Π² Π±Ρ–Π»ΡŒΡˆΠΎΡΡ‚Ρ– Π²ΠΈΠΏΠ°Π΄ΠΊΡ–Π² ΠΏΠΎΠ²'язана Π· Π½Π΅ΠΎΠ±Ρ…Ρ–Π΄Π½Ρ–ΡΡ‚ΡŽ ΠΏΠΎΠ³Π»ΠΈΠ±Π»Π΅Π½ΠΎΠ³ΠΎ дослідТСння ΠΉ лікування Π² лікаря-інтСрніста. Π£ Π·Π²'язку Π· Ρ†ΠΈΠΌ Π΄ΠΎΡ†Ρ–Π»ΡŒΠ½Ρ– міТдисциплінарний ΠΏΡ–Π΄Ρ…Ρ–Π΄, створСння ΠΊΠΎΠ½ΡΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΈΠ²Π½ΠΎΠ³ΠΎ Ρ†Π΅Π½Ρ‚Ρ€Ρƒ, Ρ€ΠΎΠ·Ρ€ΠΎΠ±ΠΊΠ° способів Π΅Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡ— Ρ€Π°Π½Π½ΡŒΠΎΡ— діагностики ΠΉ лікування Π·Π°Ρ…Π²ΠΎΡ€ΡŽΠ²Π°Π½ΡŒ слизової ΠΎΠ±ΠΎΠ»ΠΎΠ½ΠΊΠΈ ΠΏΠΎΡ€ΠΎΠΆΠ½ΠΈΠ½ΠΈ Ρ€ΠΎΡ‚Π°; Diseases of oral mucosa and lip red border have some difficulties in diagnostics which are caused with: individual structure distinctions; disease symptom variety; the manifestation of general disease symptoms and syndromes in oral cavity; similarity of many clinical manifestations, injuring elements at different diseases; dynamic change of clinical presentation under the influence of external and internal factors; mainly chronic recurrent clinical course of some diseases; presence of some associated diseases (lichen ruber planus, a fungousstomatitis, leukoplakia, etc.); change of traditional forms of disease clinical course, their polymorphic clinical symptomatology in modern conditions, etc. Diagnostics in most cases is connected with the necessity of profound research and treatment at the doctor-internist. In this case the interdisciplinary approach, creation of the advisory centre, working out of effective early diagnostics ways and treatment of oral mucosa diseases are expedient

    Π—Π°Ρ…Π²ΠΎΡ€ΡŽΠ²Π°Π½Ρ–ΡΡ‚ΡŒ Π½Π° ΠΏΠ΅Ρ€Π΅Π΄Π°ΠΊΠΎΠ²Ρ– стани слизової ΠΎΠ±ΠΎΠ»ΠΎΠ½ΠΊΠΈ ΠΏΠΎΡ€ΠΎΠΆΠ½ΠΈΠ½ΠΈ Ρ€ΠΎΡ‚Π° Π² ΠŸΠΎΠ»Ρ‚Π°Π²ΡΡŒΠΊΡ–ΠΉ області Π·Π° 2003-2009 Ρ€Ρ€.

    Get PDF
    Злоякісні новоутворСння Ρ” ΠΎΠ΄Π½Ρ–Ρ”ΡŽ Π· Π°ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΈΡ… ΠΌΠ΅Π΄ΠΈΠΊΠΎ-Π±Ρ–ΠΎΠ»ΠΎΠ³Ρ–Ρ‡Π½ΠΈΡ… Ρ‚Π° ΡΠΎΡ†Ρ–Π°Π»ΡŒΠ½ΠΎ-Π΅ΠΊΠΎΠ½ΠΎΠΌΡ–Ρ‡Π½ΠΈΡ… ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌ Π² Π£ΠΊΡ€Π°Ρ—Π½Ρ–. УраТСння насСлСння Ρ†Ρ–Ρ”ΡŽ ΠΏΠ°Ρ‚ΠΎΠ»ΠΎΠ³Ρ–Ρ”ΡŽ зростає, ΡΠΌΠ΅Ρ€Ρ‚Π½Ρ–ΡΡ‚ΡŒ Π½Π΅ ΠΌΠ°Ρ” Ρ‚Π΅Π½Π΄Π΅Π½Ρ†Ρ–Ρ— Π΄ΠΎ змСншСння [2,9]. ΠŸΡ–Π΄Π²ΠΈΡ‰Π΅Π½Π½Ρ ΠΊΠ°Π½Ρ†Π΅Ρ€ΠΎΠ³Π΅Π½Π½ΠΎΠ³ΠΎ навантаТСння Π½Π° насСлСння Π£ΠΊΡ€Π°Ρ—Π½ΠΈ ΠΎΠ±ΡƒΠΌΠΎΠ²Π»Π΅Π½Π΅ високим Ρ€Ρ–Π²Π½Π΅ΠΌ Π°Π½Ρ‚Ρ€ΠΎΠΏΠΎΠ³Π΅Π½Π½ΠΎΠ³ΠΎ забруднСння довкілля, Π·ΠΌΡ–Π½Π°ΠΌΠΈ способу Тиття насСлСння (куріння, зловТивання алкоголю, ΡΠ΅ΠΊΡΡƒΠ°Π»ΡŒΠ½Π° Ρ‚Π° Ρ€Π΅ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΈΠ²Π½Π° ΠΏΠΎΠ²Π΅Π΄Ρ–Π½ΠΊΠ° Ρ‚Π° Ρ–Π½..), сприяє Π·Π±Ρ–Π»ΡŒΡˆΠ΅Π½Π½ΡŽ кумулятивного Ρ€ΠΈΠ·ΠΈΠΊΡƒ Π·Π°Ρ…Π²ΠΎΡ€Ρ–Ρ‚ΠΈ Π½Π° Ρ€Π°ΠΊ; ЗлокачСствСнныС новообразования ΡΠ²Π»ΡΡŽΡ‚ΡΡ ΠΎΠ΄Π½ΠΎΠΉ ΠΈΠ· Π°ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΌΠ΅Π΄ΠΈΠΊΠΎ-биологичСских ΠΈ ΡΠΎΡ†ΠΈΠ°Π»ΡŒΠ½ΠΎ-экономичСских ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌ Π² Π£ΠΊΡ€Π°ΠΈΠ½Π΅. ΠŸΠΎΡ€Π°ΠΆΠ΅Π½ΠΈΠ΅ насСлСния этой ΠΏΠ°Ρ‚ΠΎΠ»ΠΎΠ³ΠΈΠ΅ΠΉ возрастаСт, ΡΠΌΠ΅Ρ€Ρ‚Π½ΠΎΡΡ‚ΡŒ Π½Π΅ ΠΈΠΌΠ΅Π΅Ρ‚ Ρ‚Π΅Π½Π΄Π΅Π½Ρ†ΠΈΠΈ ΠΊ ΡƒΠΌΠ΅Π½ΡŒΡˆΠ΅Π½ΠΈΡŽ [2,9]. ΠŸΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΠ΅ ΠΊΠ°Π½Ρ†Π΅Ρ€ΠΎΠ³Π΅Π½Π½ΠΎΠ³ΠΎ Π½Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ Π½Π° насСлСниС Π£ΠΊΡ€Π°ΠΈΠ½Ρ‹ обусловлСно высоким ΡƒΡ€ΠΎΠ²Π½Π΅ΠΌ Π°Π½Ρ‚Ρ€ΠΎΠΏΠΎΠ³Π΅Π½Π½ΠΎΠ³ΠΎ загрязнСния ΠΎΠΊΡ€ΡƒΠΆΠ°ΡŽΡ‰Π΅ΠΉ срСды, измСнСния ΠΎΠ±Ρ€Π°Π·Π° ΠΆΠΈΠ·Π½ΠΈ насСлСния (ΠΊΡƒΡ€Π΅Π½ΠΈΠ΅, Π·Π»ΠΎΡƒΠΏΠΎΡ‚Ρ€Π΅Π±Π»Π΅Π½ΠΈΠ΅ алкоголя, ΡΠ΅ΠΊΡΡƒΠ°Π»ΡŒΠ½Π°Ρ ΠΈ Ρ€Π΅ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΈΠ²Π½ΠΎΠ΅ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ ΠΈ Π΄Ρ€ ..), способствуСт ΡƒΠ²Π΅Π»ΠΈΡ‡Π΅Π½ΠΈΡŽ кумулятивного риска Π·Π°Π±ΠΎΠ»Π΅Ρ‚ΡŒ Ρ€Π°ΠΊΠΎΠΌ; Malignant neoplasms are one of the most urgent medical and biological and socio-economic problems in Ukraine. Affected by this pathology, the mortality rate does not tend to decrease [2,9]. Increasing the carcinogenic burden on the population of Ukraine is conditioned by a high level of anthropogenic pollution of the environment, changes in the lifestyle of the population (smoking, alcohol abuse, sexual and reproductive behavior, etc.), increases the cumulative risk of cancer

    THE PREVENTION, DIAGNOSIS, AND TREATMENT OF VITAMIN D AND CALCIUM DEFICIENCIES IN THE ADULT POPULATION OF RUSSIA AND IN PATIENTS WITH OSTEOPOROSIS (ACCORDING TO THE MATERIALS OF PREPARED CLINICAL RECOMMENDATIONS)

    Get PDF
    The paper presents data on the role of vitamin D and calcium in the function of many human organs and tissues.Β Lifestyle, dietary preferences, and insufficient physical activity contribute to the high prevalence of vitamin D and calciumΒ deficiencies in the adult population of Russia, causing different diseases and abnormalities. The authors haveΒ worked out recommendations for the preventive use of vitamin D and calcium in healthy population, give consumptionΒ rates for these substances, and describe the clinical and laboratory signs of vitamin D deficiency and indicationsΒ for screening. They also propose treatment regimens for vitamin D deficiency and depict the signs of intoxication inoverdose. Particular emphasis is laid on the place of vitamin D and calcium in the therapy of osteoporosis
    • …
    corecore