781 research outputs found

    Π―Π²Π»Π΅Π½ΠΈΠ΅ ΠΌΡƒΠ»ΡŒΡ‚ΠΈΡΡ‚Π°Π±ΠΈΠ»ΡŒΠ½ΠΎΡΡ‚ΠΈ ΠΊΠ°ΠΊ элСктрофизиологичСский Ρ„Π΅Π½ΠΎΠΌΠ΅Π½ ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π°

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    The hypothesis about presence phenomenon of multistability of myocardium which is present on cellular and systemics level is put forward. Multistability is understood as coexistence of two or several various steady periodic rhythms in system with the established set of parameters, but sold of various entry conditions.ВыдвигаСтся Π³ΠΈΠΏΠΎΡ‚Π΅Π·Π° ΠΎ Π½Π°Π»ΠΈΡ‡ΠΈΠΈ Ρ„Π΅Π½ΠΎΠΌΠ΅Π½Π° ΠΌΡƒΠ»ΡŒΡ‚ΠΈΡΡ‚Π°Π±ΠΈΠ»ΡŒΠ½ΠΎΡΡ‚ΠΈ ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π°, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ присутствуСт Π½Π° ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½ΠΎΠΌ ΠΈ ΠΎΡ€Π³Π°Π½Π½ΠΎΠΌ ΡƒΡ€ΠΎΠ²Π½Π΅. Под ΠΌΡƒΠ»ΡŒΡ‚ΠΈΡΡ‚Π°Π±ΠΈΠ»ΡŒΠ½ΠΎΡΡ‚ΡŒΡŽ понимаСтся сосущСствованиС Π΄Π²ΡƒΡ… ΠΈΠ»ΠΈ Π½Π΅ΡΠΊΠΎΠ»ΡŒΠΊΠΈΡ… Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… устойчивых пСриодичСских Ρ€ΠΈΡ‚ΠΌΠΎΠ² Π² систСмС с установлСнным Π½Π°Π±ΠΎΡ€ΠΎΠΌ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ², Π½ΠΎ Ρ€Π΅Π°Π»ΠΈΠ·ΡƒΠ΅ΠΌΡ‹Ρ… ΠΈΠ· Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Π½Π°Ρ‡Π°Π»ΡŒΠ½Ρ‹Ρ… условий. Π­ΠšΠ“ Ρ„Π΅Π½ΠΎΠΌΠ΅Π½ ΠΌΡƒΠ»ΡŒΡ‚ΠΈΡΡ‚Π°Π±ΠΈΠ»ΡŒΠ½ΠΎΡΡ‚ΠΈ проявляСтся, Π½Π°ΠΏΡ€ΠΈΠΌΠ΅Ρ€, ΠΏΡ€ΠΈ экстрасистолии, ΠΊΠΎΠ³Π΄Π° ΠΏΡ€Π΅ΠΆΠ΄Π΅Π²Ρ€Π΅ΠΌΠ΅Π½Π½ΠΎΠ΅ Π²Π½Π΅ΠΎΡ‡Π΅Ρ€Π΅Π΄Π½ΠΎΠ΅ Π²ΠΎΠ·Π±ΡƒΠΆΠ΄Π΅Π½ΠΈΠ΅ ΠΌΠΎΠΆΠ΅Ρ‚ ΠΏΡ€ΠΈΠ²ΠΎΠ΄ΠΈΡ‚ΡŒ ΠΊ Ρ€Π°Π·Π½Ρ‹ΠΌ послСдствиям, Π² частности, Π²Ρ‹Π·Ρ‹Π²Π°Π΅Ρ‚ ΠΏΠ°Ρ€ΠΎΠΊΡΠΈΠ·ΠΌΠ°Π»ΡŒΠ½ΡƒΡŽ Ρ‚Π°Ρ…ΠΈΠΊΠ°Ρ€Π΄ΠΈΡŽ ΠΈΠ»ΠΈ ΠΏΡ€ΠΈΠ²ΠΎΠ΄ΠΈΡ‚ ΠΊ измСнСниям, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ носят Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½Ρ‹ΠΉ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€ ΠΈ проходят ΡΠ°ΠΌΠΎΡΡ‚ΠΎΡΡ‚Π΅Π»ΡŒΠ½ΠΎ послС устранСния воздСйствия Π½Π° ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚Π° ΠΏΡ€ΠΎΠ²ΠΎΡ†ΠΈΡ€ΡƒΡŽΡ‰ΠΈΡ… Ρ„Π°ΠΊΡ‚ΠΎΡ€ΠΎΠ². Π Π°Π±ΠΎΡ‚Π° ΠΎΡ€ΠΈΠ΅Π½Ρ‚ΠΈΡ€ΠΎΠ²Π°Π½Π° ΠΊΠ°ΠΊ Π½Π° Ρ€Π΅ΡˆΠ΅Π½ΠΈΠ΅ Ρ„ΡƒΠ½Π΄Π°ΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹Ρ… ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌ элСктрофизиологии ΠΊΠ»Π΅Ρ‚ΠΎΠΊ, Ρ‚Π°ΠΊ ΠΈ клиничСских ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌ

    Ѐибрилляция ΠΆΠ΅Π»ΡƒΠ΄ΠΎΡ‡ΠΊΠΎΠ² ΠΈ ΠΆΠ΅Π»ΡƒΠ΄ΠΎΡ‡ΠΊΠΎΠ²Ρ‹Π΅ Ρ‚Π°Ρ…ΠΈΠΊΠ°Ρ€Π΄ΠΈΠΈ - Π±Π°Π·ΠΎΠ²Ρ‹Π΅ полоТСния ΠΈ диагностичСскиС ΠΊΡ€ΠΈΡ‚Π΅Ρ€ΠΈΠΈ

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    In the submitted short work questions of validity formulations of ECG the conclusions are discussed at tachisistolics forms of ventricular tachicardia and distinguish different to diagnostics with ventricular fibrillation.Π’ прСдставлСнной Ρ€Π°Π±ΠΎΡ‚Π΅ ΠΎΠ±ΡΡƒΠΆΠ΄Π°ΡŽΡ‚ΡΡ вопросы обоснованности Ρ„ΠΎΡ€ΠΌΡƒΠ»ΠΈΡ€ΠΎΠ²ΠΎΠΊ элСктрокардиографичСских Π·Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠΉ ΠΏΡ€ΠΈ тахисистоличСских Ρ„ΠΎΡ€ΠΌΠ°Ρ… ΠΆΠ΅Π»ΡƒΠ΄ΠΎΡ‡ΠΊΠΎΠ²Ρ‹Ρ… Π°Ρ€ΠΈΡ‚ΠΌΠΈΠΉ ΠΈ Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎΠΉ диагностикС с фибрилляциСй ΠΆΠ΅Π»ΡƒΠ΄ΠΎΡ‡ΠΊΠΎΠ². ΠŸΡ€ΠΈΠ²ΠΎΠ΄ΡΡ‚ΡΡ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ исслСдований стадий фибрилляции ΠΆΠ΅Π»ΡƒΠ΄ΠΎΡ‡ΠΊΠΎΠ²

    Molecular structures of thymidine isomers isolated in low-temperature inert matrices

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    The Fourier transform infrared spectra of 2`-deoxyribonucleoside β€” thymidine (dT) in low-temperature Ar matrices are obtained in the range 4000–1300 cm–¹. It is determined that anti-conformers of thymidine are dominant. The ribose rings of the main anti-conformers dT_a0, dT_a1 are in the C2`-endo conformation, but the ribose rings of minor anti-conformers dT_a2, dT_a3 have the C3`-endo conformation, stabilized by intramolecular hydrogen bonds O3`H…O5` and O5`H…O3`, respectively. The main syn-conformer dT_s2 is stabilized by the intramolecular hydrogen bond O5`H…O2 and has C2`-endo conformation of the ribose ring

    Axion-induced oscillations of cooperative electric field in a cosmic magneto-active plasma

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    We consider one cosmological application of an axionic extension of the Maxwell-Vlasov theory, which describes axionically induced oscillatory regime in the state of global magnetic field evolving in the anisotropic expanding (early) universe. We show that the cooperative electric field in the relativistic plasma, being coupled to the pseudoscalar (axion) and global magnetic fields, plays the role of a regulator in this three-level system; in particular, the cooperative (Vlasov) electric field converts the regime of anomalous growth of the pseudoscalar field, caused by the axion-photon coupling at the inflationary epoch of the universe expansion, into an oscillatory regime with finite density of relic axions. We analyze solutions to the dispersion equations for the axionically induced cooperative oscillations of the electric field in the relativistic plasma.Comment: 7 pages, misprints correcte

    Restoring the sting to metric preheating

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    The relative growth of field and metric perturbations during preheating is sensitive to initial conditions set in the preceding inflationary phase. Recent work suggests this may protect super-Hubble metric perturbations from resonant amplification during preheating. We show that this possibility is fragile and sensitive to the specific form of the interactions between the inflaton and other fields. The suppression is naturally absent in two classes of preheating in which either (1) the vacua of the non-inflaton fields during inflation are deformed away from the origin, or (2) the effective masses of non-inflaton fields during inflation are small but during preheating are large. Unlike the simple toy model of a g2Ο•2Ο‡2g^2 \phi^2 \chi^2 coupling, most realistic particle physics models contain these other features. Moreover, they generically lead to both adiabatic and isocurvature modes and non-Gaussian scars on super-Hubble scales. Large-scale coherent magnetic fields may also appear naturally.Comment: 6 pages, 3 ps figures, RevTex, revised discussion of backreaction and new figure. To appear Phys. Rev. D (Rapid Communication

    Prevention of stomatological complications in therapy of locally extended cancer of oral cavity mucus

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    Aim of the investigation: to improve prophylaxis of dental complications during the therapy in the patients with locally extended cancer of oral cavity mucus. Materials and methods. Results of sanation of oral cavity in 320 patients with cancer of oral and pharyngeal areas have been analyzed. Results. The best results have been marked in the patients who experienced surgical sanation before chemo-radial therapy. Most complications have been observed when teeth were extracted after the chemical therapy during the period of radial therapy at focal dose of above 20 Gy as well as in the late periods after the radial therapy. Conclusion: A complex of preventive measures with the use of haemostatic sponge with canamycin in such patients has decreased a number of complications and the terms of healing of alveoli of extracted teeth

    Supersymmetric null-surfaces

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    Single trace operators with the large R-charge in supersymmetric Yang-Mills theory correspond to the null-surfaces in AdS5Γ—S5AdS_5\times S^5. We argue that the moduli space of the null-surfaces is the space of contours in the super-Grassmanian parametrizing the complex (2∣2)(2|2)-dimensional subspaces of the complex (4∣4)(4|4)-dimensional space. The odd coordinates on this super-Grassmanian correspond to the fermionic degrees of freedom of the superstring.Comment: v4: added a reference to the earlier work; corrected the formula for the stabilizer of the BMN vacuum; added the discussion of the complex structure of the odd coordinates in Section 3.

    ΠœΠ΅Ρ‚ΠΎΠ΄Ρ‹ Π°Π½Π°Π»ΠΈΠ·Π° ΠΌΠΈΠΊΡ€ΠΎΠ°Π»ΡŒΡ‚Π΅Ρ€Π½Π°Ρ†ΠΈΠΈ Π­ΠšΠ“-сигнала

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    The paper presents the methods of analysis of the ECG-signal alternations, which are increasingly being used in everyday clinical practice. Evaluation of these indicators is an important component of the analysis of myocardial electrical instability and the development of potentially dangerous arrhythmias. New technologies of reception and analysis of the electric field of the heart reflect the creation of a new generation of functional diagnostic methods. Now the method of dispersion mapping is increasingly being used for the screening in Russia.Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ прСдставлСны ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌΡ‹Π΅ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹ Π°Π½Π°Π»ΠΈΠ·Π° Π°Π»ΡŒΡ‚Π΅Ρ€Π½Π°Ρ†ΠΈΠΉ Π­ΠšΠ“-сигнала, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ всС ΡˆΠΈΡ€Π΅ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡŽΡ‚ΡΡ Π² повсСднСвной клиничСской ΠΏΡ€Π°ΠΊΡ‚ΠΈΠΊΠ΅. ΠžΡ†Π΅Π½ΠΊΠ° Π΄Π°Π½Π½Ρ‹Ρ… ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»Π΅ΠΉ являСтся Π²Π°ΠΆΠ½ΠΎΠΉ ΡΠΎΡΡ‚Π°Π²Π»ΡΡŽΡ‰Π΅ΠΉ Π°Π½Π°Π»ΠΈΠ·Π° элСктричСской Π½Π΅ΡΡ‚Π°Π±ΠΈΠ»ΡŒΠ½ΠΎΡΡ‚ΠΈ ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π° ΠΈ развития ΠΏΠΎΡ‚Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎ-опасных Π°Ρ€ΠΈΡ‚ΠΌΠΈΠΉ. НовыС Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ получСния ΠΈ Π°Π½Π°Π»ΠΈΠ·Π° элСктричСского поля сСрдца ΠΎΡ‚Ρ€Π°ΠΆΠ°ΡŽΡ‚ созданиС Π½ΠΎΠ²ΠΎΠ³ΠΎ поколСния ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠΉ диагностики. ΠœΠ΅Ρ‚ΠΎΠ΄ диспСрсионного картирования Π½Π°Ρ…ΠΎΠ΄ΠΈΡ‚ всС большСС ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ Π² Π Π€ Π² настоящСС врСмя для провСдСния скрининга

    ΠžΡ†Π΅Π½ΠΊΠ° тяТСсти тСчСния ΠΈ ΠΎΡ‚Π΄Π°Π»Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΡ€ΠΎΠ³Π½ΠΎΠ·Π° острого ΠΊΠΎΡ€ΠΎΠ½Π°Ρ€Π½ΠΎΠ³ΠΎ синдрома ΠΏΡ€ΠΈ использовании ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² Π­ΠšΠ“ высокого Ρ€Π°Π·Ρ€Π΅ΡˆΠ΅Π½ΠΈΡ, диспСрсионного картирования ΠΈ интСнсивности ΡΠ²ΠΎΠ±ΠΎΠ΄Π½ΠΎΡ€Π°Π΄ΠΈΠΊΠ°Π»ΡŒΠ½Ρ‹Ρ… процСссов

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    Work is devoted to complex studying of electrophysiological parameters of a myocardium according to new methods of an electrocardiogram of diagnostics and intensity of free radical oxidation processes at patients with acuter coronary syndrome. The analysis of the remote results (lethal and repeated hospitalization) and their communication with parameters of an electrocardiogram of the high resolution and dispersive mapping in the period of aggravation IHD, comparable with the clinical data of speed of displays of disease before hospitalization is carried out. It is investigated prognostics value of a parameter free radical oxidations.Π Π°Π±ΠΎΡ‚Π° посвящСна комплСксному ΠΈΠ·ΡƒΡ‡Π΅Π½ΠΈΡŽ элСктрофизиологичСских ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»Π΅ΠΉ ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π° ΠΏΠΎ Π΄Π°Π½Π½Ρ‹ΠΌ Π½ΠΎΠ²Ρ‹Ρ… ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² Π­ΠšΠ“ диагностики ΠΈ интСнсивности свободно-Ρ€Π°Π΄ΠΈΠΊΠ°Π»ΡŒΠ½Ρ‹Ρ… процСссов Ρƒ Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… с острым ΠΊΠΎΡ€ΠΎΠ½Π°Ρ€Π½Ρ‹ΠΌ синдромом. ΠŸΡ€ΠΎΠ²Π΅Π΄Π΅Π½ Π°Π½Π°Π»ΠΈΠ· ΠΎΡ‚Π΄Π°Π»Π΅Π½Π½Ρ‹Ρ… Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² (Π»Π΅Ρ‚Π°Π»ΡŒΠ½Ρ‹Π΅ исходы ΠΈ ΠΏΠΎΠ²Ρ‚ΠΎΡ€Π½Ρ‹Π΅ госпитализации) ΠΈ ΠΈΡ… связь с показатСлями Π­ΠšΠ“ высокого Ρ€Π°Π·Ρ€Π΅ΡˆΠ΅Π½ΠΈΡ ΠΈ диспСрсионного картирования Π² ΠΏΠ΅Ρ€ΠΈΠΎΠ΄Π΅ обострСния Π˜Π‘Π‘, сопоставлСны с клиничСскими Π΄Π°Π½Π½Ρ‹ΠΌΠΈ быстроты проявлСний заболСвания Π΄ΠΎ госпитализации. Π˜Π·ΡƒΡ‡Π΅Π½Π° прогностичСская Ρ†Π΅Π½Π½ΠΎΡΡ‚ΡŒ показатСля ΠΌΠ°Π»ΠΎΠ½ΠΎΠ²ΠΎΠ³ΠΎ диальдСгида

    ВСстированиС ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»Π΅ΠΉ диспСрсионного картирования Π½Π° Π±Π°Π·Π΅ Π΄Π°Π½Π½Ρ‹Ρ… "The PTB Diagnostic ECG Database"

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    Work is devoted, studying in indicators of alternation of electrophysiological indicators of a myocardium according to a method dispersive mapping the electrocardiogram on a basis Β«The DIAGNOSTIC DATABASE of cardiogramme PTBΒ» national Institute of Metrology of Germany. Obtained results shown perspectivity uses of dispersive method in distribution of group of a cardiovascular pathology and the acquisition of fibrous structure predicting ventricular fibrillation and ventricular tachycardia.Π Π°Π±ΠΎΡ‚Π° посвящСна ΠΈΠ·ΡƒΡ‡Π΅Π½ΠΈΡŽ элСктрофизиологичСских ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»Π΅ΠΉ ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π° ΠΏΠΎ Π΄Π°Π½Π½Ρ‹ΠΌ ΠΌΠ΅Ρ‚ΠΎΠ΄Π° диспСрсионного картирования Π­ΠšΠ“ ΠΏΡ€ΠΈ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠΈ тСстирования Π½Π° Π±Π°Π·Π΅ Β«THE PTB DIAGNOSTIC ECG DATABASEΒ» Π½Π°Ρ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ Π˜Π½ΡΡ‚ΠΈΡ‚ΡƒΡ‚Π° ΠΌΠ΅Ρ‚Ρ€ΠΎΠ»ΠΎΠ³ΠΈΠΈ Π“Π΅Ρ€ΠΌΠ°Π½ΠΈΠΈ. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ Π΄Π°Π½Π½Ρ‹Π΅ исслСдования ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ ΠΏΠ΅Ρ€ΡΠΏΠ΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ использования ΠΌΠ΅Ρ‚ΠΎΠ΄Π° диспСрсионного картирования Π² Π²Ρ‹Π΄Π΅Π»Π΅Π½ΠΈΠΈ Π³Ρ€ΡƒΠΏΠΏΡ‹ сСрдСчно-сосудистой ΠΏΠ°Ρ‚ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΈ прогнозирования фибрилляции ΠΆΠ΅Π»ΡƒΠ΄ΠΎΡ‡ΠΊΠΎΠ² ΠΈ ΠΆΠ΅Π»ΡƒΠ΄ΠΎΡ‡ΠΊΠΎΠ²ΠΎΠΉ Ρ‚Π°Ρ…ΠΈΠΊΠ°Ρ€Π΄ΠΈΠΈ
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