301 research outputs found

    Intensity distribution in rotational line spectra

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    Completely resolved Doppler-free rotational line spectra of six vibronic two-photon bands in benzene C6 H6 and C6 D6 are presented. The excited final states possess different excess energies in S1 (1567 to 2727 cm−1 ) and are embedded in dense manifolds of background states with differing densities of states (1<rho<60 1/cm−1 ). The bands are analyzed by a statistical procedure. The intensity distribution of several hundreds of lines of each band is investigated. It is found that all weakly perturbed bands display a similar, peaked intensity distribution while in strongly perturbed bands the number of lines decreases monotonically with increasing intensity. The origin of this difference is discussed in terms of coupling to the many background states. The Journal of Chemical Physics is copyrighted by The American Institute of Physics

    Digitalization of public administration: expert reflection on problems and challenges

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    In the article, the authors identified a set of conditions and factors that both hinder and facilitate the transformation of public administration as a public-state system for coordinating and realizing the interests of representatives of stakeholders through the use of the potential of digital and information and telecommunication technologies. In the course of the study, the following tasks were solved: the role of digitalization for the public administration system was assessed, the problems of this process were identified, the possibilities of electronic online platforms in the organization of social networking in the “governance – society” dyad were evaluated. The article presents the results of a focused group semi-formalized online interview in the format of video conferencing on the Zoom platform, conducted in December 2021 among 20 experts. The experts were representatives of public authorities at the federal, regional and local levels, state corporations, civil society structures, business structures, the scientific community, as well as the Russian Regional Management Center. Based on the analysis of the results of the expert survey, the authors conclude that the digitalization of the activities of the authorities gives a good increase not only in improving the quality of service provision to the country’s population, but also in improving the feedback mechanism, increasing the involvement of the population in the process of solving socially significant issues. This gives hope that the resolution of problems associated with the introduction of digital technologies into the work of government bodies with the population will contribute to the transition from informing and servicing citizens to interactive communication with them

    Brane decay of a (4+n)-dimensional rotating black hole: spin-0 particles

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    In this work, we study the `scalar channel' of the emission of Hawking radiation from a (4+n)-dimensional, rotating black hole on the brane. We numerically solve both the radial and angular part of the equation of motion for the scalar field, and determine the exact values of the absorption probability and of the spheroidal harmonics, respectively. With these, we calculate the particle, energy and angular momentum emission rates, as well as the angular variation in the flux and power spectra -- a distinctive feature of emission during the spin-down phase of the life of the produced black hole. Our analysis is free from any approximations, with our results being valid for arbitrarily large values of the energy of the emitted particle, angular momentum of the black hole and dimensionality of spacetime. We finally compute the total emissivities for the number of particles, energy and angular momentum and compare their relative behaviour for different values of the parameters of the theory.Comment: 24 pages, 13 figure

    Lepidoptera (Insecta) of proposed specially protected natural area "Belokurikha nature park" (Northern Altai). First results

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    149 Lepidoptera species from 16 families were reported for the territory of the proposed protected area "Belokurikha Natural Park". This list is the primary data on the fauna of Lepidoptera in the region. Most of the species belongs to Euro-Siberian and Transpalaearctic groups

    Brane Decay of a (4+n)-Dimensional Rotating Black Hole. II: spin-1 particles

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    The present works complements and expands a previous one, focused on the emission of scalar fields by a (4+n)-dimensional rotating black hole on the brane, by studying the emission of gauge fields on the brane from a similar black hole. A comprehensive analysis of the particle, energy and angular momentum emission rates is undertaken, for arbitrary angular momentum of the black hole and dimensionality of spacetime. Our analysis reveals the existence of a number of distinct features associated with the emission of spin-1 fields from a rotating black hole on the brane, such as the behaviour and magnitude of the different emission rates, the angular distribution of particles and energy, the relative enhancement compared to the scalar fields, and the magnitude of the superradiance effect. Apart from their theoretical interest, these features can comprise clear signatures of the emission of Hawking radiation from a brane-world black hole during its spin-down phase upon successful detection of this effect during an experiment.Comment: 35 pages, 19 figures, Latex fil

    Comparative Evaluation of Protein Hydrolysates in the Process of Constructing Based on Them Nutrient Medium for Brucella Cultivating

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    Objective of the study is to conduct comparative assessment of specific activity of pancreatic hydrolysates of protein-containing products, both phytogenous and zoogenous, as regards Brucella test strains; and consequently, to develop nutrient medium for Brucella cultivation, to study its biological parameters. Materials and methods. Gelatin, soy, soy concentrate, corn gluten, fish meal, freshly frozen Caspian sprat, and bovine blood pancreatic hydrolysates, obtained using conventional methodology, served as the test objects. Determination of biological parameters of nutrient media, containing the studied hydrolysates was carried out using the test-strains of Brucella abortus 19 BA and B. melitensis Rev I. Results and discussion. Gelatin hydrolysate has the best biological parameters as regards the Brucella strains. Studied have been biological parameters of nutrient media, containing combination of gelatin hydrolysate and other selected hydrolysates. Experimental nutrient medium for Brucella cultivation has been developed. Comparative assessment of the experimental nutrient medium and two other commercial media used for cultivating Brucella has been performed

    Group analysis and exact solutions of a class of variable coefficient nonlinear telegraph equations

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    A complete group classification of a class of variable coefficient (1+1)-dimensional telegraph equations f(x)utt=(H(u)ux)x+K(u)uxf(x)u_{tt}=(H(u)u_x)_x+K(u)u_x, is given, by using a compatibility method and additional equivalence transformations. A number of new interesting nonlinear invariant models which have non-trivial invariance algebras are obtained. Furthermore, the possible additional equivalence transformations between equations from the class under consideration are investigated. Exact solutions of special forms of these equations are also constructed via classical Lie method and generalized conditional transformations. Local conservation laws with characteristics of order 0 of the class under consideration are classified with respect to the group of equivalence transformations.Comment: 23 page

    Сравнительная эффективность тофацитиниба и адалимумаба у пациентов с псориатическим артритом в реальной клинической практике. Данные Общероссийского регистра пациентов с псориатическим артритом

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    Objective: to compare the clinical efficacy in real clinical practice of the targeted synthetic disease-modifying antirheumatic drug (sDMARD) tofacitinib (TOFA) and the biologic DMARD (bDMARD), an inhibitor of tumor necrosis factor alpha (TNFα), adalimumab (ADA) in patients with psoriatic arthritis (PsA), included in the Russian nationwide register of patients with PsA.Patients and methods. The study included 77 patients with PsA (43 men and 34 women) who met the CASPAR criteria and were observed in the Russian nationwide register. Patients were divided into two groups depending on the treatment. Group 1, in which oral TOFA was prescribed, 5 mg 2 times a day, included 41 patients: 24 (58.5%) men and 17 (41.5%) women, the median age was 41 [34; 50] years, the median duration of PsA was 72 [35; 120] months. Group 2, in which subcutaneous ADA was used, 40 mg every 2 weeks, included 36 patients: 19 (52.8%) men and 17 (47.2%) women, the median age was 44 [34; 51] years, the median duration of PsA was 59 [22; 102] months. Combination therapy, including methotrexate (MT), received 80.5% of patients in the TOFA group and 52.8% of patients in the ADA group. At the beginning of the study and every 6 months further, the activity and efficacy of PsA therapy were assessed in all patients according to DAPSA and criteria for minimal disease activity – MDA (number of painful joints ≤1, number of swollen joints ≤1, PASI ≤1 or BSA ≤3 , pain score ≤15, patient's general assessment of disease activity ≤20 mm on a visual analogue scale, HAQ ≤0.5, enthesitis ≤1), dynamics of BASDAI and BSA were also assessed. The number of patients who achieved remission (DAPSA ≤4) or MDA (5 criteria out of 7) during therapy with TOFA and ADA was determined.Results and discussion. Before the start of the therapy in the 1st group, the median DAPSA was 44.2 [37.8; 55.3]: moderate PsA activity was in 5 (12.2%) patients, high in 36 (87.8%) patients. In group 2, the median DAPSA was 35.8 [21.1; 52]: low activity was detected in 3 (8.6%), moderate – in 11 (31.4%), high – in 21 (60%) patients (data from 35 patients was available). 6 months after the start of treatment in patients of the 1st and the 2nd group, there was a significant decrease in all indicators of PsA activity compared to the baseline. The median DAPSA was 11 [4.3; 17.3] and 9.1 [6; 19.6]; remissions according to DAPSA reached 11 (26.8%) and 6 (20.8%) patients, respectively, low activity – 15 (36.6%) and 13 (44.8%), MDA – 16 (40%) and 9 (30%). The number of patients with dactylitis in the 1st and in the 2nd group significantly decreased: from 22 (53.7%) to 5 (13.2%) and from 13 (36.1%) to 6 (20%), respectively. Median HAQ decreased from 1 [0.625; 1.5] to 0.5 [0; 0.875] and from 0.875 [0.5; 1.38] to 0.5 [0; 0.875]; median BASDAI – from 6 [4.2; 7] to 1.4 [0.6; 3.2] and from 4.4 [1.9; 5.8] to 3 [0.8; 4.5], respectively. In group 1, the number of patients with BSA&gt; 3% decreased from 16 (39%) to 8 (26.7%; p&lt;0.225), and in group 2, due to insufficient data (5 patients), we failed to evaluate BSA dynamics.Conclusion. In real clinical practice TOFA and ADA both had comparable efficacy on all clinical manifestations of PsA: after 6 months of therapy, most patients with PsA achieved MDA, low disease activity and remission according to DAPSA and BASDAI.Цель исследования – сравнение клинической эффективности таргетного синтетического базисного противовоспалительного препарата (тсБПВП) тофацитиниба (ТОФА) и генно-инженерного биологического препарата (ГИБП), ингибитора фактора некроза опухоли α (иФНОα) адалимумаба (АДА) у больных псориатическим артритом (ПсА) в реальной клинической практике по данным Общероссийского регистра пациентов с ПсА.Пациенты и методы. В исследование включено 77 больных ПсА (43 мужчины и 34 женщины), соответствовавших критериям CASPAR и наблюдавшихся в Общероссийском регистре. Пациенты были разделены на две группы в зависимости от проводимого лечения. В 1-ю группу, в которой назначали таблетированный ТОФА по 5 мг 2 раза в день, вошел 41 пациент: 24 (58,5%) мужчины и 17 (41,5%) женщин, медиана возраста – 41 [34; 50] год, медиана длительности ПсА – 72 [35; 120] мес. Ко 2-й группе, в которой использовали АДА по 40 мг/2 нед подкожно, отнесены 36 больных: 19 (52,8%) мужчин и 17 (47,2%) женщин, медиана возраста – 44 [34; 51] года, медиана длительности ПсА – 59 [22; 102] мес. Комбинированную терапию, включавшую метотрексат (МТ), получали 80,5% пациентов группы ТОФА и 52,8% пациента группы АДА. У всех пациентов в начале исследования и каждые 6 мес оценивали активность и эффективность терапии ПсА по DAPSA и критериям минимальной активности болезни – MAБ (число болезненных суставов ≤1, число припухших суставов ≤1, PASI ≤1 или BSA ≤3, оценка боли ≤15, общая оценка активности болезни больным ≤20 мм по визуальной аналоговой шкале, HAQ ≤0,5, энтези- ты ≤1), динамику BASDAI и BSA. Определяли число больных, достигших ремиссии (DAPSA ≤4) или МАБ (5 критериев из 7) на фоне терапии ТОФА и АДА.Результаты и обсуждение. До начала терапии в 1-й группе медиана DAPSA составляла 44,2 [37,8; 55,3]: умеренная активность ПсА была у 5 (12,2%), высокая – у 36 (87,8%) больных. Во 2-й группе медиана DAPSA равнялась 35,8 [21,1; 52]: низкая активность выявлена у 3 (8,6%), умеренная – у 11 (31,4%), высокая – у 21 (60%) больного (доступны данные 35 пациентов). Через 6 мес после начала лечения у пациентов 1-й и 2-й групп произошло значимое снижение всех показателей активности ПсА по сравнению с исходными. Мeдиана DAPSA составила соответственно 11 [4,3; 17,3] и 9,1 [6; 19,6]; ремиссии по DAPSA достигли соответственно 11 (26,8%) и 6 (20,8%) больных, низкой активности – 15 (36,6%) и 13 (44,8%), МАБ – 16 (40%) и 9 (30%). Число пациентов с дактилитом значимо уменьшилось: с 22 (53,7%) до 5 (13,2%) и с 13 (36,1%) до 6 (20%) соответственно в 1-й и 2-й группах. Мeдиана HAQ снизилась с 1 [0,625; 1,5] дo 0,5 [0; 0,875] и с 0,875 [0,5; 1,38] дo 0,5 [0; 0,875]; мeдиана BASDAI – с 6 [4,2; 7] дo 1,4 [0,6; 3,2] и с 4,4 [1,9; 5,8] дo 3 [0,8; 4,5] соответственно. В 1-й группе число пациентов с BSA &gt;3% сократилось с 16 (39%) до 8 (26,7%; p&lt;0,225), а во 2-й группе из-за недостаточного объема данных (5 пациентов) динамику BSA оценить не удалось.Заключение. Показана сопоставимая эффективность ТОФА и АДА в реальной клинической практике в отношении всех клинических проявлений ПсА: через 6 мес терапии у большинства пациентов с ПсА отмечено достижение МАБ, низкой активности болезни и ремиссии по DAPSA и BASDAI

    Mycophenolate Mofetil and Clostridium difficile-associated Colitis

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    Aim. A clinical observation of colitis conditioned by mycophenolate mofetil intake and concomitant Clostridium difficile-associated disease.Key points. Mycophenolate mofetil (MMF) is an active immunosuppressant with side effects affecting gastrointestinal tract (GIT). A 37-yo male patient with type 1 diabetes mellitus was admitted at a gastroenterology unit with clinical signs of diarrhoea with haematochezia. A history of diabetic nephropathy and related-donor pre-dialysis kidney transplantation in 2012, since when MMF intake was 2000 mg daily. Catarrhal ulcerative colitis in colonoscopy, C. difficile toxins in pathogen stool panel. Ulcerative, ischaemic colitises and the graft-versus-host disease were ruled out in examination. A positive clinical and endoscopic trend was observed upon MMF withdrawn and start of vancomycin.Conclusion. The case presented illustrates the clinical picture and diagnostic algorithm in MMF-associated colitis. The case-distinctive is association with C. difficile infection

    Signatures of black holes at the LHC

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    Signatures of black hole events at CERN's Large Hadron Collider are discussed. Event simulations are carried out with the Fortran Monte Carlo generator CATFISH. Inelasticity effects, exact field emissivities, color and charge conservation, corrections to semiclassical black hole evaporation, gravitational energy loss at formation and possibility of a black hole remnant are included in the analysis.Comment: 13 pages, 7 figure
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