Hengzongshu/ArticleAgent huggingface dataset:
For a long time, interest in multimode (MM) optical fibers has remained limited, owing to the poor quality of laser beams emerging at their output. A typical indicator of beam quality is inversely proportional to the number of excited modes. However, recent intensive research of nonlinear propagation effects, involving high-power laser beams in MM graded-index (GRIN) fibers, has led to the discovery of previously unexpected phenomena, such as the Kerr-activated self-cleaning of a beam [1] . The manifestation of self-cleaning is that most of the beam energy flows into the fundamental mode of the fiber. This process is accompanied by a redistribution of energy towards higher-order modes [2] . Increasing the fundamental mode energy leads to improving the output beam quality. The standard method to determine the beam quality is to measure the M2-parameter (m-squared). This parameter measures the divergence of the beam with respect to the Gaussian beam. However, since self-cleaning involves a nonlinear redistribution of energy carried by a large number of fiber modes, this approach is not entirely correct, and a full mode decomposition (MD) of the output beam appears to be a much more informative method.
The paper is devoted to the application of the least-squares collocation method for solving the two- and one-dimensional problems in the mechanics of deformable solids. Calculation results of the deflections of isotropic and orthotropic elastic plates within the framework of various theories are presented. This paper shows that approximate solutions obtained by the hp-version of the least-squares collocation method converge with a high order and agree with analytical solutions of test problems with a high degree of accuracy. Numerical and mathematical modeling of three-point bending of composite beams was carried out taking into account nonlinear stress-strain relationships, multi-modulus behavior, and incipient fracture. It was found that the simulation results are in good agreement with the results of mechanical tests of three-point bending of composite beams.
The existence of electrically tunable plasmons in stacked multilayer graphene nanoribbons was first experimentally verified by infrared microscopy.

Plasmon resonances in nanopatterned single-layer graphene nanoribbons (SL-GNRs), double-layer graphene nanoribbons (DL-GNRs) and triple-layer graphene nanoribbons (TL-GNRs) are studied experimentally using 'realistic' graphene samples. We carried out systematic full-wave simulations using a finite-element technique to validate and fit experimental results, and extract the carrier-scattering rate as a fitting parameter.

We find that the strength of the plasmonic resonance increases in DL-GNRs when compared to SL-GNRs. However, further increase was not observed in TL-GNRs when compared to DL-GNRs. The numerical simulations show remarkable agreement with experiments for an unpatterned SLG sheet, and a qualitative agreement for a patterned graphene sheet. We conclude with our perspective of the key bottlenecks in both experiments and theoretical models.
The article describes the history of the development of the All-Russian classifier of economic activities (OKVED), as well as the dynamics of tax revenues from the oil and gas complex in the consolidated budget of Russia.

The analysis of revenues to the consolidated budget in the context of economic activities for 2019 is carried out.

The article describes the income from the oil and gas complex to the consolidated budget in the context of taxes at the following levels: federal, regional, and local.
The differential decay rates of the processes J /ψ→ pp̅ π 0 , J /ψ→ pp̅ η, J /ψ→ pp̅ ω, J /ψ→ pp̅ ρ, and J /ψ→ pp̅ γ close to the pp̅ threshold are calculated with the help of the NN̅ optical potential. We use the potential which has been suggested to fit the cross sections of NN̅ scattering together with all other NN̅ experimental data available. The pp̅ nvariant mass spectra of J/ψ decays are in agreement with the available experimental data. The anisotropy of the angular distributions of the decays J /ψ→ pp̅ π 0 (η), which appears due to the tensor forces in the NN̅ interaction, is predicted close to the pp̅ threshold. This anisotropy is large enough to be investigated experimentally. Such measurements would allow one to check the accuracy of the model of NN̅ interaction, is predicted close to the pp̅ threshold. This anisotropy is large enough to be investigated experimentally. Such measurements would allow one to check the accuracy of the model of NN̅ interaction. Using our potential and the Green’s function approach we also describe the peak in the η ′ π + π - invariant mass spectrum in the decay J/ψ → γ η ′ π + π - in the energy region near the NN̅ threshold.
The article reveals the ways of poetical quotation embedding in the cinematic text using the example of the poem My sight, my strength, dims... by Arseny Tarkovsky in the feature film Nostalghia by Andrei Tarkovsky. The scene from Nostalghia which includes the poem My sight, my strength, dims... is analyzed from the points of view of the main factors of transformation of a poetic text when it is cited. These factors include: the place of the quotation in the structure of the cinematic text, mechanical transformations of the text, background information, the way of the quotation embedding, visual and sound accompaniment. The analysis shows that the episode when the poem is read is one the key scenes in the film. It reveals different characteristics of the concept of FATHER in the individual worldview of the film director. The main transformation of the text boils down to its translation into Italian. The quotation is embedded into the text via audio channel. As a result of the study we arrive to the following conclusions: 1) Poetic quotations in the film Nostalghia create numerous variants of the image of father interpretation. 2) The translated Italian text Si oscura la vista. La mia forza… preserves the main idea of the poem My sight, my strength, dims... and emphasizes the motives of the lost house and dying. 3) The embedding of the poem mentioned above into the cinematic text of Nostalghia is not plot-driven, unlike the integration of the text As a child I once fell ill. 4) The poetic texts As a child I once fell ill and My sight, my strength, dims... by Arseny Tarkovsky are united in the cinematic text of Nostalghia to create a binary system making the transition from the empirical level of the text to the sacred one.
The study provides experimental evidence of scientific ideas that are important for developing the phenomenological basis of the theory of phase transformations in the 'coal – methane' system accompanying the formation of gas-dynamic processes in coal beds when their initial stress-strain state and temperature background are disturbed during mining.

Residual gas content of coal was determined versus the time after its recovery from coal beds and the weighted mean particle size; the effect of the pore structure of natural coals on the gas-dynamic activity of coal beds was estimated.

It was shown that the major part of volatile compounds (mostly methane) is dissolved in the bulk of carbon layers.
The connective tissue components that form the atherosclerotic plaque body are produced by the plaque inner mass cells (PIMC), located inside the plaque. We report an approach to isolate and culture cells from the connective tissue of stable and vulnerable human atherosclerotic plaques based on elimination of non-connective tissue cells such as blood and non-plaque intima cells with a lysis buffer. The resulting plaque cells were characterized by growth capacity, morphology, transcriptome profiling and specific protein expression. Plaque cells slowly proliferated for up to three passages unaffected by the use of proliferation stimulants or changes of culture media composition. Stable plaques yielded more cells than vulnerable ones. Plaque cell cultures also contained several morphological cellular types. RNA-seq profiles of plaque cells were different from any of the cell types known to be involved in atherogenesis. The expression of the following proteins was observed in cultured plaque cells: smooth muscle cells marker α-SMA, macrophage marker CD14, extracellular matrix proteins aggrecan, fibronectin, neovascularisation markers VEGF-A, CD105, cellular adhesion receptor CD31 and progenitor/dedifferentiation receptor CD34. Differential expression of several notable transcripts in cells from stable and vulnerable plaques suggests the value of plaque cell culture studies for the search of plaque vulnerability markers.
The identification of the mechanisms of adaptation of protein structures to extreme environmental conditions is a challenging task of structural biology. We performed molecular dynamics (MD) simulations of the Nip7 protein involved in RNA processing from the shallow-water (P. furiosus) and the deep-water (P. abyssi) marine hyperthermophylic archaea at different temperatures (300 and 373 K) and pressures (0.1, 50 and 100 MPa). The aim was to disclose similarities and differences between the deep- and shallow-sea protein models at different temperatures and pressures.The current results demonstrate that the 3D models of the two proteins at all the examined values of pressures and temperatures are compact, stable and similar to the known crystal structure of the P. abyssi Nip7. The structural deviations and fluctuations in the polypeptide chain during the MD simulations were the most pronounced in the loop regions, their magnitude being larger for the C-terminal domain in both proteins. A number of highly mobile segments the protein globule presumably involved in protein-protein interactions were identified. Regions of the polypeptide chain with significant difference in conformational dynamics between the deep- and shallow-water proteins were identified.The results of our analysis demonstrated that in the examined ranges of temperatures and pressures, increase in temperature has a stronger effect on change in the dynamic properties of the protein globule than the increase in pressure. The conformational changes of both the deep- and shallow-sea protein models under increasing temperature and pressure are non-uniform. Our current results indicate that amino acid substitutions between shallow- and deep-water proteins only slightly affect overall stability of two proteins. Rather, they may affect the interactions of the Nip7 protein with its protein or RNA partners.
In the previous studies, the DNA with the bulky Fap-dC derivative was demonstrated to be a difficult substrate for the nucleotide excision repair (NER), a system which is involved in the removal of bulky lesions from DNA.This type of compounds could be of particular interest as possible selective NER, considerably reducing the potency of DNA repair due to competitive immobilization of protein factors involved in this process.This approach can be potentially useful to increase the efficiency of chemotherapy.Aim.To identify DNA structures containing multiple bulky adducts that can efficiently inhibit the nucleotide excision repair.Methods.Enzymatic DNA synthesis, PCR, NER-competent cell extract preparation, in vitro NER assay, HPLC.Results.The conditions for the synthesis of extended DNA containing multiple unrepairable lesions were established.A wide range of DNA structures containing modified nucleotides was obtained.All modified DNAs were shown to inhibit the in vitro activity of the NER system.The DNA structure that inhibits the NER activity with the highest efficiency was selected.Conclusions.The model DNA structures effectively inhibiting the activity of NER were found.The new data obtained here can potentially be used for both basic and applied research.K e y w o r d s: DNA repair, nucleotide excision repair, unrepairable DNA lesions, model DNA substrates
Background Empirical evidence on the epidemiology of hypertension, diabetes and hypercholesterolemia is limited in many countries in Central and Eastern Europe. We aimed to estimate the prevalence, awareness, treatment and control of hypertension, diabetes and hypercholesterolemia in the Czech Republic, Russia, Poland and Lithuania, and to identify the risk factors for the three chronic conditions. Methods We analysed cross-sectional data from the HAPIEE study, including adults aged 45–69 years in the Czech Republic, Russia, Poland and Lithuania, collected between 2002 and 2008 (total sample N = 30,882). Among prevalent cases, we estimated awareness, treatment, and control of hypertension, diabetes and hypercholesterolemia by gender and country. Multivariate logistic regression was applied to identify associated risk factors. Results In each country among both men and women, we found high prevalence but low control of hypertension, diabetes, and hypercholesterolemia. Awareness rates of hypertension were the lowest in both men (61.40%) and women (69.21%) in the Czech Republic, while awareness rates of hypercholesterolemia were the highest in both men (46.51%) and women (51.20%) in Poland. Polish participants also had the highest rates of awareness (77.37% in men and 79.53% in women), treatment (71.99% in men and 74.87% in women) and control (30.98% in men and 38.08% in women) of diabetes. The common risk factors for the three chronic conditions were age, gender, education, obesity and alcohol consumption. Conclusions Patterns of awareness, treatment and control rates of hypertension, diabetes and hypercholesterolemia differed by country. Efforts should be made in all four countries to control these conditions, including implementation of international guidelines in everyday practice to improve detection and effective management of these conditions.
Music recommender systems (MRS) help users of music streaming services to find interesting music in the music catalogs. The sparsity problem is an essential problem of MRS research. It refers to the fact that user usually rates only a tiny part of items. As a result, MRS often has not enough data to make a recommendation. To solve the sparsity problem, in this paper, a new approach that uses related items’ ratings is proposed. Hybrid MRS based on this approach is described. It uses tracks, albums, artists, genres normalized ratings along with information about relations between items of different types in the music catalog. The proposed MRS is evaluated and compared to collaborative method for users’ preferences prediction.
The article is intended to study several images depicting archers embossed on stone boulders, located near the present settlement Cholpon-Ata, which is situated at the northern coast of Issyk-Kul Lake in the Kyrgyz Republic. These anthropomorphous characters are made on the surface of large boulders as a part of hunting scenes, or in a single fashion. The archers are displayed ready for shooting at disproportionally large figures of wild ungulate animals, mountain goats, and argali. They are performed in the animal style traditional for the Saki period Tian Shan petroglyphs supplemented with ornament elements, put on croup or on the largest part of the torso of these wild ungulate animals. Figures of hunters are depicted bearing bows in their hands. The images show compound bows and arrows with tips of different shapes. A single figure of a horseman is displayed riding a horse and holding bow with taken off bowstring, placed in the bow quiver. Weapons, bows, arrows of the ancient archers are shown in a position ready for shooting at various targets or in a stowed position. Bows are shown with concave shoulders in the firing direction and placed bowstrings. Separate bows are shown with shoulders tops oriented towards the firing direction. The tops of several arrows are highlighted. One of such tops is issued in a semicircular ending. Based on these images of bows and arrows, ancient nomads of the Scythian and Saki times in Tian Shan regarded bows and arrows as the main type of hunting weapon, and possibly used them for hunting widely.
Summary Single tandem repeat (STR) polymorphisms are widely used in linkage and association studies. One of the drawbacks of using these markers is that genetic data coming from different experiments cannot be easily pooled together, because both allele length and binning distance may change. As large studies with multiple series of subjects sequentially included become more and more common, there is an increasing interest in pooling the genetic data obtained in different experiments. Correct reconstruction of allelic correspondences between genotyping experiments is particularly crucial for association‐oriented studies, such as candidate gene studies and genome‐wide association studies in isolated populations. Here, we suggest a maximum‐likelihood framework to find the best correspondence between alleles typed in different genotyping experiments. We also address the issue of goodness‐of‐fit and robustness. We perform a study simulating results obtained in a genome scan using 787 STR markers. The simulations show that the suggested method yields good results with respect to the error rate, even if the sizes of the samples to be pooled are as low as 10 subjects (3% errors), though only 9% of alleles pass our tests. As sample sizes increase to 250 subjects the proportion of alleles pooled reaches 96% with an error rate of <0.1%.
Микроэлементный состав рассолов кимберлитовой трубки «Удачная» (Сибирская платформа)Новиков Д.А. 1, 2
Motivation: Functionally related genes involved in the same molecular-genetic, biochemical or physiological process are often regulated coordinately. Such regulation is provided by precisely organized binding of a multiplicity of special proteins [transcription factors (TFs)] to their target sites (cis-elements) in regulatory regions of genes. Cis-element combinations provide a structural basis for the generation of unique patterns of gene expression. Results: Here we present a new approach for defining promoter models based on the composition of TF binding sites and their pairs. We utilize a multicomponent fitness function for selection of the promoter model that fits best to the observed gene expression profile. We demonstrate examples of successful application of the fitness function with the help of a genetic algorithm for the analysis of functionally related or co-expressed genes as well as testing on simulated and permutated data. Availability: The CMA program is freely available for non-commercial users. URL . It is also a part of the commercial system ExPlain™ () designed for causal analysis of gene expression data. Contact: alexander.kel@biobase-international.com
The present contribution sums up the main activities related to celebrations of the IYCr in Novosibirsk (Russia). I give a general overview of crystallographic research and education in Novosibirsk at the Russian Academy of Sciences and at the Novosibirsk State University, to explain which basis we have for organizing various activities for children and for general public. I shall, in particular, describe the program of continuous crystallographic education starting from nursery to the university, including crystal growth courses and competitions, research projects involving children, festivals, public lectures, various competitions and exhibitions. A special attention will be paid to the activity of school-children from the French school, who have translated all the posters prepared by J.-L. Hodeau from French into Russian. The group has visited Grenoble and presented their work there, and participated also in the IYCr Opening Ceremony. Other activities include International Workshops and Conferences for students and young scientists, as well as an OpenLab in cooperation with STOE (Darmstadt).
Pioneering works on multimode fiber transmission [1,2], dated 40 years ago, predicted the existence of multimode solitons, providing conditions for the temporal trapping of the input optical modes to form a spatiotemporal soliton [3-5]. Only recently [6-8], multimode solitons were experimentally investigated in graded-index multimode fibers (GRIN), unveiling the complexity of a new, uncharted field. In our work, we experimentally and numerically investigated the propagation of ultrashort pulses over long distances of GRIN fiber. We discovered a new class of spatiotemporal solitons with surprising properties: basically single-mode, they cannot be described by the variational theory; their pulsewidth and energy are independent of the input pulse duration, and appear to depend only on the fiber dispersive parameters and, therefore, the wavelength. The new solitons are promising for the delivery of high-energy laser beams, for high-power spatiotemporal mode-locked multimode fiber lasers, and for high-bit rate multimode fiber networks.
The present paper studies the generation mechanism of terahertz (THz) radiation from tightly focused femtosecond laser pulses in a gas medium.

We measured the angular radiation pattern under different focusing conditions and observed that, with the deepening of focus, the angular radiation pattern changes and optical-to-THz conversion efficiency increases. Based on these assumptions, the transient photocurrent theory of the phenomenon presented in this paper was developed by us and used for the numerical fit of the experimental data.

The analysis of the observed phenomena led to the assumption that the dipole radiation prevails in most cases despite the existing conception regarding the dominating role of the quadrupole mechanism of radiation.
Рассмотрено влияние топологических размеров матрицы переключаемых конденсаторов на погрешность дифференциальной нелинейности АЦП последовательного приближения в составе многоканальных микросхем и систем на кристалле.Даны рекомендации, позволяющие оптимизировать номиналы единичных конденсаторов емкостной матрицы и оценить размеры блока АЦП на ранних стадиях
The formation of the periodic structures based on Si-materials by electron beam lithography technique has been studied.

We have investigated lithography processes such as designing, exposition, development, etching end others. The developed technique allows forming close-packed arrays of elements and holes in the nanometre range.

This can be used to produce two-dimensional photonic crystals (2D PhCs) with emitting micro cavities (missing holes) with lateral size parameters within an accuracy of about 2% in the Si (100) substrate and in silicon-on-insulator structures. Such accuracy is expected to be sufficient for obtaining the cavities-coupling radiation interference from large areas of 2D PhCs.
The data article refers to the paper titles "Impact of malnutrition on long-term survival in adult patients after elective cardiac surgery" [1]. The data refer to the analysis of the relationship between baseline malnutrition and long-term mortality after cardiac surgery. Baseline demographic, nutritional, and medical history data were collected for each enrolled patient. Baseline serum albumin and C-reactive (CRP) protein levels were also obtained. Surgical risk was assessed in accordance with the logistic EuroSCORE. Intraoperative data including cardiopulmonary bypass (CPB) time and postoperative characteristics, such as postoperative complications, number of days in the ICU, and hospitalization duration, were also collected. Data on nutritional status were collected using four nutritional screening tools: (1) malnutrition universal screening tool (MUST), (2) short nutritional assessment questionnaire (SNAQ), (3) mini-nutritional assessment (MNA), and (4) nutritional risk screening 2002 (NRS-2002). Both electronic medical records and phone interviews were used for survival data collection. ROC analysis was performed to analyze prognostic value of baseline and perioperative variables on long-term mortality. Univariate and multivariate logistic regression analysis of predictors of 3- and 8-year mortality were performed. Kaplan-Meyer curves, describing the impact of baseline and perioperative characteristics on 3- and 8-year survival were also performed.