16 research outputs found

    Boxnep - ΠΌΠΎΠ΄ΡƒΠ»ΡŒΠ½Ρ‹ΠΉ ΠΏΠΎΠ΄Π²ΠΎΠ΄Π½Ρ‹ΠΉ Ρ€ΠΎΠ±ΠΎΡ‚ пСрспСктивных Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉ

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    The article discusses the relevance of the underwater vehicles are able to solve a wide range of problems. The decision puts in a basis of the research is designing a modular underwater robot. It allows to make a mounting of various equipment and testing it in the water medium. The paper deals with the concept of the robot and its characteristics

    ВозмоТности ΠΏΠΎΠ·ΠΈΡ‚Ρ€ΠΎΠ½Π½ΠΎΠΉ эмиссионной Ρ‚ΠΎΠΌΠΎΠ³Ρ€Π°Ρ„ΠΈΠΈ, совмСщСнной с ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€Π½ΠΎΠΉ Ρ‚ΠΎΠΌΠΎΠ³Ρ€Π°Ρ„ΠΈΠ΅ΠΉ, с 18F-Π€Π”Π“ Π² диагностикС ΠΏΠΎΡ‡Π΅Ρ‡Π½ΠΎ-ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½ΠΎΠ³ΠΎ Ρ€Π°ΠΊΠ°

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    Positron emission tomography combined with computed tomography (PET/CT) is a method, capable of evaluation of not only structural, but also metabolic alterations in organs and tissues. 18F-fluorodeoxyglucose (18F-PDG) PET/CT is widely used in diagnostics of various malignant tumors, but its role in renal cell carcinoma (RCC) remains obscure.Despite its limited effectiveness in primary and differential diagnosis of RCC, PET/CT can be used to determine the grade of malignancy and the histological type of tumor. According to various authors, 18F-FDG standardized uptake value (SUV) of a renal neoplasm can serve as an independent prognostic factor of overall survival.18F-FDG PET/CT is widely used to detect local recurrence and metastatic lesions in various neoplastic processes. Numerous studies confirm the high efficiency of PET/CT in detection of metastases and recurrence discernment for RCC.The ability to assess the metabolic activity of neoplastic foci using PET/CT may allow for evaluation of RCC therapy effectiveness, which is confirmed by clinical studies of various targeted therapy agents, such as tyrosine kinase inhibitors, mammalian target of rapamycin inhibitors, and monoclonal antibodies.Thus, there is growing evidence that 18F-FDG PET/CT is a useful tool in diagnostics of RCC.ΠŸΠΎΠ·ΠΈΡ‚Ρ€ΠΎΠ½Π½Π°Ρ эмиссионная томография, совмСщСнная с ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€Π½ΠΎΠΉ Ρ‚ΠΎΠΌΠΎΠ³Ρ€Π°Ρ„ΠΈΠ΅ΠΉ (ПЭВ/КВ), являСтся ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ ΠΎΡ†Π΅Π½ΠΊΠΈ Π½Π΅ Ρ‚ΠΎΠ»ΡŒΠΊΠΎ структурных, Π½ΠΎ ΠΈ мСтаболичСских ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΉ Π² ΠΎΡ€Π³Π°Π½Π°Ρ… ΠΈ тканях. ПЭВ/КВ с 18F-Ρ„Ρ‚ΠΎΡ€Π΄Π΅Π·ΠΎΠΊΡΠΈΠ³Π»ΡŽΠΊΠΎΠ·ΠΎΠΉ (18F-Π€Π”Π“) ΡˆΠΈΡ€ΠΎΠΊΠΎ примСняСтся Π² диагностикС Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… злокачСствСнных ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅ΠΉ, ΠΎΠ΄Π½Π°ΠΊΠΎ Ρ€ΠΎΠ»ΡŒ Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΠΌΠ΅Ρ‚ΠΎΠ΄Π° ΠΏΡ€ΠΈ ΠΏΠΎΡ‡Π΅Ρ‡Π½ΠΎ-ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½ΠΎΠΌ Ρ€Π°ΠΊΠ΅ (ПКР) остаСтся нСясной.НСсмотря Π½Π° ΠΎΠ³Ρ€Π°Π½ΠΈΡ‡Π΅Π½Π½ΡƒΡŽ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ Π² ΠΏΠ΅Ρ€Π²ΠΈΡ‡Π½ΠΎΠΉ ΠΈ Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎΠΉ диагностикС ПКР, ПЭВ/КВ ΠΌΠΎΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ использована для опрСдСлСния стСпСни злокачСствСнности ΠΈ гистологичСского Ρ‚ΠΈΠΏΠ° ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ. ΠšΡ€ΠΎΠΌΠ΅ этого, ΠΏΠΎ Π΄Π°Π½Π½Ρ‹ΠΌ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Π°Π²Ρ‚ΠΎΡ€ΠΎΠ², ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»ΡŒ стандартизированной Π²Π΅Π»ΠΈΡ‡ΠΈΠ½Ρ‹ поглощСния (standardized uptake value, SUV) 18F-Π€Π”Π“ нСопластичСского ΠΎΡ‡Π°Π³Π° ΠΏΡ€ΠΈ ПКР ΠΌΠΎΠΆΠ΅Ρ‚ ΡΠ»ΡƒΠΆΠΈΡ‚ΡŒ нСзависимым прогностичСским Ρ„Π°ΠΊΡ‚ΠΎΡ€ΠΎΠΌ ΠΎΠ±Ρ‰Π΅ΠΉ выТиваСмости.ПЭВ/КВ с 18F-Π€Π”Π“ ΡˆΠΈΡ€ΠΎΠΊΠΎ примСняСтся для выявлСния мСстного Ρ€Π΅Ρ†ΠΈΠ΄ΠΈΠ²Π° ΠΈ мСтастатичСской диссСминации ΠΏΡ€ΠΈ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… нСопластичСских процСссах. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ многочислСнных исслСдований ΠΏΠΎΠ΄Ρ‚Π²Π΅Ρ€ΠΆΠ΄Π°ΡŽΡ‚ Π²Ρ‹ΡΠΎΠΊΡƒΡŽ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ПЭВ/КВ Π² ΠΎΡ†Π΅Π½ΠΊΠ΅ распространСнности ΠΈ диагностикС Ρ€Π΅Ρ†ΠΈΠ΄ΠΈΠ²Π° ПКР.Π’ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ опрСдСлСния мСтаболичСской активности нСопластичСских ΠΎΡ‡Π°Π³ΠΎΠ² с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ПЭВ/КВ позволяСт ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ этот ΠΌΠ΅Ρ‚ΠΎΠ΄ для ΠΎΡ†Π΅Π½ΠΊΠΈ эффСктивности Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ ПКР, Ρ‡Ρ‚ΠΎ подтвСрТдаСтся Π΄Π°Π½Π½Ρ‹ΠΌΠΈ клиничСских исслСдований Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Ρ‚Π°Ρ€Π³Π΅Ρ‚Π½Ρ‹Ρ… ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚ΠΎΠ², Ρ‚Π°ΠΊΠΈΡ… ΠΊΠ°ΠΊ ΠΈΠ½Π³ΠΈΠ±ΠΈΡ‚ΠΎΡ€Ρ‹ Ρ‚ΠΈΡ€ΠΎΠ·ΠΈΠ½ΠΊΠΈΠ½Π°Π·Ρ‹, ΠΈΠ½Π³ΠΈΠ±ΠΈΡ‚ΠΎΡ€Ρ‹ мишСни Ρ€Π°ΠΏΠ°ΠΌΠΈΡ†ΠΈΠ½Π° ΠΌΠ»Π΅ΠΊΠΎΠΏΠΈΡ‚Π°ΡŽΡ‰ΠΈΡ… ΠΈ ΠΌΠΎΠ½ΠΎΠΊΠ»ΠΎΠ½Π°Π»ΡŒΠ½Ρ‹Π΅ Π°Π½Ρ‚ΠΈΡ‚Π΅Π»Π°.Π’Π°ΠΊΠΈΠΌ ΠΎΠ±Ρ€Π°Π·ΠΎΠΌ, всС большС Π΄Π°Π½Π½Ρ‹Ρ… ΡΠ²ΠΈΠ΄Π΅Ρ‚Π΅Π»ΡŒΡΡ‚Π²ΡƒΠ΅Ρ‚ Π² ΠΏΠΎΠ»ΡŒΠ·Ρƒ Ρ‚ΠΎΠ³ΠΎ, Ρ‡Ρ‚ΠΎ ПЭВ/КВ с 18F-Π€Π”Π“ являСтся ΠΏΠΎΠ»Π΅Π·Π½Ρ‹ΠΌ инструмСнтом Π² диагностикС ПКР.

    Advances in Topological Materials

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    Materials with electronic bands that possess nontrivial topology have remained a focal point of condensed matter physics since 2005, when topological insulators were theoretically discovered by Kane and Mele [...

    Low-Energy Optical Conductivity of TaP: Comparison of Theory and Experiment

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    The ab-plane optical conductivity of the Weyl semimetal TaP is calculated from the band structure and compared to the experimental data. The overall agreement between theory and experiment is found to be best when the Fermi level is slightly (20 to 60 meV) shifted upwards in the calculations. This confirms a small unintentional doping of TaP, reported earlier, and allows a natural explanation of the strong low-energy (50 meV) peak seen in the experimental ab-plane optical conductivity: this peak originates from transitions between the almost parallel non-degenerate electronic bands split by spin-orbit coupling. The temperature evolution of the peak can be reasonably well reproduce by calculations using an analog of the Mott formula

    Low-frequency relaxation rate in the superconducting YBa2Cu3O6.7

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    Bulk Cyclotron Resonance in the Topological Insulator Bi2Te3

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