Вопросник для первичной самооценки здоровья пациентов, перенесших новую коронавирусную инфекцию: Рекомендации Междисциплинарного совета экспертов по проведению скрининга симптомов постковидного периода при углубленной диспансеризации

The post-COVID symptom complex is wide enough and requires special vigilance during clinical examination of patients after the novel coronavirus infection. The aim of the Multidisciplinary Expert Board study was to develop a standardized questionnaire for initial self-assessment by patients who had had COVID-19 before the expanded medical check-up.Methods. The existing validated international and national questionnaires and scales were analyzed to assess their relevance, convenience, and ease of filling out. Results of the analysis were used to set up a screening for post-COVID symptoms.Results. The work of the Multidisciplinary Expert Board in June-August 2021 resulted in a new screening questionnaire for the initial assessment of the health status of patients who have COVID-19. The questionnaire is intended for self-filling before the further clinical examination.Conclusion. A new standardized patient questionnaire to screen for post-COVID symptoms may significantly optimize the doctor’s working time, increase the efficiency of diagnosis, improve the principles of selection and formation of risk groups of patients during an expanded medical check-up.Симптомокомплекс нарушений постковидного периода достаточно широк и требует специальной настороженности врача при проведении диспансеризации пациентов, перенесших новую коронавирусную инфекцию.Целью работы Междисциплинарного Совета экспертов явилась разработка унифицированного вопросника для самостоятельного заполнения пациентом при подготовке к углубленной диспансеризации после перенесенного COVID-19.Материалы и методы. Проведен анализ существующих международных и отечественных анкет и шкал с целью оценки их релевантности, удобства и простоты заполнения для возможного скрининга расстройств постковидного периода. Результаты. Итогом работы Междисциплинарного Совета Экспертов в июне-августе 2021 г. явилось создание нового скрининг-вопросника по первичной оценке состояния здоровья пациентов, перенесших COVID-19, предназначенного для самостоятельного заполнения ими при подготовке к углубленной диспансеризации.Заключение. Создание унифицированного вопросника пациента при скрининге постковидных нарушений позволит существенно оптимизировать рабочее время врача, повысить эффективность диагностики заболеваний, совершенствовать принципы отбора и формирования групп риска пациентов при углубленной диспансеризации

Diabetes mellitus type 1 in adults

Public organization “Russian Association of Endocrinologists”. Clinical guidlines

Diabetes mellitus type 2 in adults

Public organization “Russian Association of Endocrinologists”. Clinical guidelines.&nbsp

Searching for stochastic gravitational waves using data from the two colocated LIGO Hanford detectors

Searches for a stochastic gravitational-wave background (SGWB) using terrestrial detectors typically involve cross-correlating data from pairs of detectors. The sensitivity of such cross-correlation analyses depends, among other things, on the separation between the two detectors: the smaller the separation, the better the sensitivity. Hence, a colocated detector pair is more sensitive to a gravitational-wave background than a noncolocated detector pair. However, colocated detectors are also expected to suffer from correlated noise from instrumental and environmental effects that could contaminate the measurement of the background. Hence, methods to identify and mitigate the effects of correlated noise are necessary to achieve the potential increase in sensitivity of colocated detectors. Here we report on the first SGWB analysis using the two LIGO Hanford detectors and address the complications arising from correlated environmental noise. We apply correlated noise identification and mitigation techniques to data taken by the two LIGO Hanford detectors, H1 and H2, during LIGO’s fifth science run. At low frequencies, 40–460 Hz, we are unable to sufficiently mitigate the correlated noise to a level where we may confidently measure or bound the stochastic gravitational-wave signal. However, at high frequencies, 460–1000 Hz, these techniques are sufficient to set a 95% confidence level upper limit on the gravitational-wave energy density of Ω(f) < 7.7 × 10[superscript -4](f/900  Hz)[superscript 3], which improves on the previous upper limit by a factor of ~180. In doing so, we demonstrate techniques that will be useful for future searches using advanced detectors, where correlated noise (e.g., from global magnetic fields) may affect even widely separated detectors.National Science Foundation (U.S.)United States. National Aeronautics and Space AdministrationCarnegie TrustDavid & Lucile Packard FoundationAlfred P. Sloan Foundatio

Search for gravitational-lensing signatures in the full third observing run of the LIGO-Virgo network

Gravitational lensing by massive objects along the line of sight to the source causes distortions of gravitational wave-signals; such distortions may reveal information about fundamental physics, cosmology and astrophysics. In this work, we have extended the search for lensing signatures to all binary black hole events from the third observing run of the LIGO--Virgo network. We search for repeated signals from strong lensing by 1) performing targeted searches for subthreshold signals, 2) calculating the degree of overlap amongst the intrinsic parameters and sky location of pairs of signals, 3) comparing the similarities of the spectrograms amongst pairs of signals, and 4) performing dual-signal Bayesian analysis that takes into account selection effects and astrophysical knowledge. We also search for distortions to the gravitational waveform caused by 1) frequency-independent phase shifts in strongly lensed images, and 2) frequency-dependent modulation of the amplitude and phase due to point masses. None of these searches yields significant evidence for lensing. Finally, we use the non-detection of gravitational-wave lensing to constrain the lensing rate based on the latest merger-rate estimates and the fraction of dark matter composed of compact objects

Search for eccentric black hole coalescences during the third observing run of LIGO and Virgo

Despite the growing number of confident binary black hole coalescences observed through gravitational waves so far, the astrophysical origin of these binaries remains uncertain. Orbital eccentricity is one of the clearest tracers of binary formation channels. Identifying binary eccentricity, however, remains challenging due to the limited availability of gravitational waveforms that include effects of eccentricity. Here, we present observational results for a waveform-independent search sensitive to eccentric black hole coalescences, covering the third observing run (O3) of the LIGO and Virgo detectors. We identified no new high-significance candidates beyond those that were already identified with searches focusing on quasi-circular binaries. We determine the sensitivity of our search to high-mass (total mass M&gt;70 M⊙) binaries covering eccentricities up to 0.3 at 15 Hz orbital frequency, and use this to compare model predictions to search results. Assuming all detections are indeed quasi-circular, for our fiducial population model, we place an upper limit for the merger rate density of high-mass binaries with eccentricities 0&lt;e≤0.3 at 0.33 Gpc−3 yr−1 at 90\% confidence level

Ultralight vector dark matter search using data from the KAGRA O3GK run

Among the various candidates for dark matter (DM), ultralight vector DM can be probed by laser interferometric gravitational wave detectors through the measurement of oscillating length changes in the arm cavities. In this context, KAGRA has a unique feature due to differing compositions of its mirrors, enhancing the signal of vector DM in the length change in the auxiliary channels. Here we present the result of a search for U(1)B−L gauge boson DM using the KAGRA data from auxiliary length channels during the first joint observation run together with GEO600. By applying our search pipeline, which takes into account the stochastic nature of ultralight DM, upper bounds on the coupling strength between the U(1)B−L gauge boson and ordinary matter are obtained for a range of DM masses. While our constraints are less stringent than those derived from previous experiments, this study demonstrates the applicability of our method to the lower-mass vector DM search, which is made difficult in this measurement by the short observation time compared to the auto-correlation time scale of DM

Континуальное приближение в теории среднего поля несоизмеримых магнитных состояний во фрустрированном гейзенберговском ферромагнетике

The algorithm of approximate solution has been developed for the differential equation describing the anharmonical change of the spin orientation angle in the model of ferromagnet with the exchange compe- tition between nearest and next nearest magnetic neighbors and the easy axis exchange anisotropy. The obvious dependence of the angle velocity from angle and initial condition has been derived by expanding the first integral of the equation in the Taylor series in vicinity of initial conditionРазработан алгоритм приближенного решения дифференциального уравнения, описывающего ан- гармоническое изменение угла ориентации спина в модели легкоосного ферромагнетика с конку- ренцией обменов между ближайшими и следующими за ближайшими магнитными соседями. Явная зависимость угловой скорости от угла и начального условия получена путем разложения первого интеграла уравнения в ряд Тейлора в окрестности начального услови

Континуальное приближение в теории среднего поля несоизмеримых магнитных состояний во фрустрированном гейзенберговском ферромагнетике

The algorithm of approximate solution has been developed for the differential equation describing the anharmonical change of the spin orientation angle in the model of ferromagnet with the exchange compe- tition between nearest and next nearest magnetic neighbors and the easy axis exchange anisotropy. The obvious dependence of the angle velocity from angle and initial condition has been derived by expanding the first integral of the equation in the Taylor series in vicinity of initial conditionРазработан алгоритм приближенного решения дифференциального уравнения, описывающего ан- гармоническое изменение угла ориентации спина в модели легкоосного ферромагнетика с конку- ренцией обменов между ближайшими и следующими за ближайшими магнитными соседями. Явная зависимость угловой скорости от угла и начального условия получена путем разложения первого интеграла уравнения в ряд Тейлора в окрестности начального услови