8 research outputs found

    Infrared reflection spectra of the films of topological insulator Pb

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    Infrared reflectivity spectra of the 700 nm thick topological insulator Pb1-xSnxSe films grown by the molecular beam epitaxy technique on ZnTe/GaAs substrates were studied. Using dispersion analysis of reflectivity spectra plasmon and phonon parameters for the samples under study were obtained

    Infrared reflection spectra of the films of topological insulator Pb1-xSnxSe on the substrates ZnTe/GaAs

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    Infrared reflectivity spectra of the 700 nm thick topological insulator Pb1-xSnxSe films grown by the molecular beam epitaxy technique on ZnTe/GaAs substrates were studied. Using dispersion analysis of reflectivity spectra plasmon and phonon parameters for the samples under study were obtained

    Бпособ контроля Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ ΠΌΠ΅ΠΆΠΆΠ΅Π»ΡƒΠ΄ΠΎΡ‡ΠΊΠΎΠ²ΠΎΠΉ ΠΏΠ΅Ρ€Π΅Π³ΠΎΡ€ΠΎΠ΄ΠΊΠΈ ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΡΠ΅ΠΏΡ‚Π°Π»ΡŒΠ½ΠΎΠΉ миэктомии. Π­ΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎΠ΅ исслСдованиС

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    Background: At present, there are no methods for intraoperative monitoring of the interventricular septum (IVS) thickness in a stopped and empty heart. This might be an obvious reason for unsatisfactory results after a number of septal myectomies.Aim: To provide an experimental background for the method to control the IVS thickness (that we had proposed) during septal myectomy.Materials and methods: The proposed technique is based on the transillumination method. The experimental models were cadaveric porcine hearts, as well as fragments of the human myocardium removed during septal myectomies. The thickness of the translucent myocardium was estimated depending on the local illumination value at the entrance to the myocardium and the external illumination of the surgical field. We compared the results of 67 septal myectomies performed in the clinic of the Almazov National Medical Research Centre with the results of 35 similar experimental procedures with cadaveric porcine hearts using the proposed way of measurement.Results: A graph of the illumination at the entrance to the myocardium against the thickness of the translucent myocardium was constructed. After conventionally performed septal myectomies the median variation of the myocardial thickness was 4 [3; 6] mm. In the experiment using the proposed control method, the median variation was 1 [1; 2] mm, i.e. significantly less than with the conventional approach (p = 3 x 10-10).Conclusion: The method to control the IVS thickness when performing septal myectomy makes it possible to achieve the required myocardial thickness the resection area with much greater accuracy than with the conventional one.ОбоснОбоснованиС. Π’ настоящСС врСмя Π½Π΅ сущСствуСт ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² ΠΈΠ½Ρ‚Ρ€Π°ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ контроля Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ ΠΌΠ΅ΠΆΠΆΠ΅Π»ΡƒΠ΄ΠΎΡ‡ΠΊΠΎΠ²ΠΎΠΉ ΠΏΠ΅Ρ€Π΅Π³ΠΎΡ€ΠΎΠ΄ΠΊΠΈ (ΠœΠ–ΠŸ) Π½Π° остановлСнном ΠΈ Ρ€Π°Π·Π³Ρ€ΡƒΠΆΠ΅Π½Π½ΠΎΠΌ сСрдцС. Π­Ρ‚ΠΈΠΌ, ΠΏΠΎ всСй видимости, обусловлСны Π½Π΅ΡƒΠ΄ΠΎΠ²Π»Π΅Ρ‚Π²ΠΎΡ€ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ ряда ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ ΡΠ΅ΠΏΡ‚Π°Π»ΡŒΠ½ΠΎΠΉ миэктомии.ЦСль - ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎ ΠΎΠ±ΠΎΡΠ½ΠΎΠ²Π°Ρ‚ΡŒ ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½Ρ‹ΠΉ Π°Π²Ρ‚ΠΎΡ€Π°ΠΌΠΈ способ контроля Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ ΠœΠ–ΠŸ ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΡΠ΅ΠΏΡ‚Π°Π»ΡŒΠ½ΠΎΠΉ миэктомии.ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π» ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. Π’ основу способа ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ ΠΌΠ΅Ρ‚ΠΎΠ΄ Ρ‚Ρ€Π°Π½ΡΠΈΠ»Π»ΡŽΠΌΠΈΠ½Π°Ρ†ΠΈΠΈ. Π­ΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹ΠΌΠΈ модСлями слуТили Ρ‚Ρ€ΡƒΠΏΠ½Ρ‹Π΅ свиныС сСрдца, Π° Ρ‚Π°ΠΊΠΆΠ΅ Ρ„Ρ€Π°Π³ΠΌΠ΅Π½Ρ‚Ρ‹ чСловСчСского ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π°, ΡƒΠ΄Π°Π»Π΅Π½Π½Ρ‹Π΅ ΠΏΡ€ΠΈ опСрациях ΡΠ΅ΠΏΡ‚Π°Π»ΡŒΠ½ΠΎΠΉ миэктомии. ΠžΡ†Π΅Π½ΠΈΠ²Π°Π»Π°ΡΡŒ Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Π° просвСчиваСмого ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π° Π² зависимости ΠΎΡ‚ Π²Π΅Π»ΠΈΡ‡ΠΈΠ½Ρ‹ локальной освСщСнности Π½Π° Π²Ρ…ΠΎΠ΄Π΅ Π² ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄ ΠΈ внСшнСй освСщСнности ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ поля. БопоставлСны Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ 67 ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ ΡΠ΅ΠΏΡ‚Π°Π»ΡŒΠ½ΠΎΠΉ миэктомии, Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π½Ρ‹Ρ… Π² ΠΊΠ»ΠΈΠ½ΠΈΠΊΠ΅ Π€Π“Π‘Π£ «НМИЦ ΠΈΠΌ. Π’.А. Алмазова» ΠœΠΈΠ½Π·Π΄Ρ€Π°Π²Π° России, ΠΈ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ 35 Π°Π½Π°Π»ΠΎΠ³ΠΈΡ‡Π½Ρ‹Ρ… ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹Ρ… ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ, ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Π½Ρ‹Ρ… Π½Π° Ρ‚Ρ€ΡƒΠΏΠ½Ρ‹Ρ… свиных сСрдцах с использованиСм ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ ΠΌΠ΅Ρ‚ΠΎΠ΄Π° контроля Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ ΠœΠ–ΠŸ.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. ΠŸΠΎΡΡ‚Ρ€ΠΎΠ΅Π½ Π³Ρ€Π°Ρ„ΠΈΠΊ зависимости освСщСнности Π½Π° Π²Ρ…ΠΎΠ΄Π΅ Π² ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄ ΠΈ Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ просвСчиваСмого ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π°. ПослС ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ ΡΠ΅ΠΏΡ‚Π°Π»ΡŒΠ½ΠΎΠΉ миэктомии, Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π½Ρ‹Ρ… Ρ‚Ρ€Π°Π΄ΠΈΡ†ΠΈΠΎΠ½Π½Ρ‹ΠΌ способом, ΠΌΠ΅Π΄ΠΈΠ°Π½Π° разброса Π·Π½Π°Ρ‡Π΅Π½ΠΈΠΉ Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π° составила 4 [3; 6] ΠΌΠΌ, Π° Π² экспСримСнтС с использованиСм ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ ΠΌΠ΅Ρ‚ΠΎΠ΄Π° контроля Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ ΠœΠ–ΠŸ - 1 [1; 2] ΠΌΠΌ (Ρ€ = 3 Ρ… 10-10).Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅. Бпособ контроля Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ ΠœΠ–ΠŸ ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΡΠ΅ΠΏΡ‚Π°Π»ΡŒΠ½ΠΎΠΉ миэктомии позволяСт Π΄ΠΎΠ±ΠΈΡ‚ΡŒΡΡ Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎΠΉ Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Ρ‹ ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π° Π² Π·ΠΎΠ½Π΅ Ρ€Π΅Π·Π΅ΠΊΡ†ΠΈΠΈ со Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ большСй Ρ‚ΠΎΡ‡Π½ΠΎΡΡ‚ΡŒΡŽ, Ρ‡Π΅ΠΌ ΠΏΡ€ΠΈ Ρ‚Ρ€Π°Π΄ΠΈΡ†ΠΈΠΎΠ½Π½ΠΎΠΌ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚Π΅ исполнСния

    Predictors of obsessive–compulsive symptomology: mind wandering about the past and future

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    Obsessive and compulsive tendencies are known to occur in the general population and involve worry around specific concerns (obsessions) and an urge to resolve the concern with thoughts or behaviours (compulsions). Spontaneous, but not deliberate, mind wandering experiences (when attention turns to internal mentation), have been found to predict obsessive-compulsive tendencies [Seli, P., Risko, E.F., Purdon, C. & Smilek, D. (2017). Intrusive thoughts: linking spontaneous mind wandering and OCD symptomatology. Psychological Research, 81, 392-398. https://doi.org/10.1007/s00426-016-0756-3]. Recent cognitive theory suggests a particular role for future-oriented spontaneous thought in obsessive-compulsive (OC) symptoms. Thus, we hypothesised that future-oriented rather than past-oriented spontaneous mindwandering would predict OC symptoms, such that more future-oriented mind wandering would be associated with increases in OC symptoms

    Recent advances in lead-chalcogenide diode lasers

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