Hengzongshu/ArticleAgent huggingface dataset:
The SND detector has been operating at the VEPP-2000 collider (BINP, Russia) for several years. We present its new DQM system. The system deals with multiple parameters being numbers, histograms or user opinions to form a data quality decision (good, bad, etc). It calculates SND subsystem and overall statuses and produces summaries available via web-interface. The system supports multiple parameter sets for different usages like daily checks, precise subsystem control, preparing data for processing, etc. The parameter values are analyzed using special ROOT macros yielding quality checks that could be supplemented or corrected by users. The system is a part of a new SND information system implemented as a web application using Node.js and MySQL. The ROOT macros are written by SND subsystems experts using a simple framework. Histograms are displayed using JSROOT. The system is put into production. It is consistent, however there are some improvements to implement.
Some issues of aerodynamics of a vehicle moving in a vacuum transportation system are formulated and considered.

Expected values of aerodynamic forces are estimated in wide ranges of vacuum pressures and velocities of vehicle motion.

A problem of gas-dynamic starting of a pipeline-central body configuration is formulated.
Gas Electron Multiplier (GEM) based coordinate detectors are used at different high energy physics centres and at Budker Institute of Nuclear Physics particularly. These detectors possess a spatial resolution in ten micron scale together with high rate capability up to 10 7 cm −2 s −1 . Thus, the precise investigation of best possible spatial resolution, achieved with GEM-detectors, is the subject of interest. The experimental data, accumulated by the moment, gives the possibility to compare it with the simulation results. The simulation of applied detector configurations includes transport of electrons through the detector and tracking of avalanche evolution inside the working volume, as well as obtaining signal distribution on the readout strips. The spatial resolution, obtained in the simulation of an individual detector, is found to be essentially better (the difference is about two standard deviations) than the experimental results. Further efforts to find out the reasons of the contradiction between the simulation and measurements were made. In particular, the simulation of complete experimental set-up (including tracking detectors) was performed. The results of individual detector simulation and the simulation of complete set-up were determined to generally coincide.
The process $$e^+e^-\rightarrow \eta \eta \gamma $$ e + e - → η η γ is studied in the center-of-mass energy range 1.17–2.00 GeV using data with an integrated luminosity of 201 pb $$^{-1}$$ - 1 collected by the SND detector at the VEPP-2000 $$e^+e^-$$ e + e - collider. The $$e^+e^-\rightarrow \eta \eta \gamma $$ e + e - → η η γ cross section is measured for the first time. It is shown that the dominant mechanism of this reaction is the transition through the $$\phi \eta $$ ϕ η intermediate state. Our result on the $$e^+e^-\rightarrow \eta \eta \gamma $$ e + e - → η η γ cross section is consistent with the $$e^+e^-\rightarrow \phi \eta $$ e + e - → ϕ η measurement in the $$\phi \rightarrow K^+ K^-$$ ϕ → K + K - mode. The search for radiative processes contributing to the $$e^+e^-\rightarrow \eta \eta \gamma $$ e + e - → η η γ cross section is performed, and no significant signal is observed.
We consider planar polynomial systems of ordinary differential equations of the form ẋ=x+P n (x, y), ẏ=y+Q n (x, y), where P n (x, y), Q n (x, y) are homogeneous polynomials of degree n.

We study the algebraic and non-algebraic invariant curves of these systems

with emphasis on limit cycles.
<div>The paper presents the results of experimental studies on the radiation flux generation in the sub-millimeter wavelength range due to a strong beam-plasma interaction. A relativistic electron beam (REB) with parameters 0.5 MeV / 12 kA / 6 us pumps plasma waves in a plasma column with a length of ~2 m at a plasma density of ~10^15cm-3 in a magnetic field of B~4 T. In the presence of density gradients in the plasma column, direct measurements of the energy content of the radiation flux 18 cm in diameter leaving the plasma column into the atmosphere showed that its value reaches 5-7 J. The pulse duration of the flux at half of its amplitude was about of 0.5 us, therefore, the pulse power was at the level of ~ 10 MW. In this series of experiments, the spectral composition of the radiation flux in the frequency range 0.1-0.5 THz as well as the energy distribution function of the beam electrons passed through the plasma have been measured.</div>
The incidence of adult degenerative scoliosis (ADS) among individuals over 50 years old can be as high as 68%. Surgical interventions aimed at correcting the spinal deformity in elderly patients are accompanied by a high risk of complications. The use of lateral lumbar interbody fusion (LLIF) is associated with lower rates of complications when compared with open anterior or posterior fusions.

Ninety-three patients with ADS (23 men, 70 women) were operated at the Federal Neurosurgical Center. The average age was 63 (52 to 73 years).

Restoration of local sagittal balance in ADS patients by short-segment fixation using LLIF technology leads to a statistically significant improvement in quality of life and increased functional adaptation. A lower incidence of early and late postoperative complications, less intraoperative blood loss and shorter hospital stay makes LLIF, in combination with minimally invasive transpedicular fixation, the method of choice to correct ADS in elderly patients.
Nascent polypeptide associated complex (NAC) consisting of α- and β-subunits is an essential conserved ubiquitously expressed ribosome-associated protein in eukaryotes. NAC is considered as a chaperone and co-translational regulator of nascent protein sorting providing homeostasis of cellular proteins. Here we discovered the germinal cell specific NAC (gNAC) homologue, which differs from the ubiquitously expressed NAC by the presence of expanded intrinsically disordered regions (IDRs) at the N- and C-ends of the α- and β-subunits, respectively. We propose these evolutionary acquisition of long IDRs drive gNAC to endow both the specific conformational plasticity for binding client proteins and novel functions regulated by post-transcriptional modifications (PTM). At the same time, we demonstrated that the well-known lethal effect of the loss of ubiquitous NAC-β is suppressed by ectopic expression of its germinal paralog indicating the absence of strict functional differences between the ubiquitous and germline NAC-β subunit paralogs for protein homeostasis.
Мобильное приложение непрерывной передачи видеоданных в облачные сервисы Т. В. Лях 1 , К
Unsteady interactions of shock waves are simulated numerically and analyzed taking into account viscosity and heat conductivity effects. Both a symmetric head-on collision of two shock waves of an equal strength and an asymmetric interaction of two shock waves propagating with different velocities are considered. In comparison with the classical inviscid case new effects connected with a finite width of the interacting shock waves have been observed. An increase in temperature and entropy is observed in the wake trailing behind a viscous spot formed by the intersecting symmetric finite-width shock waves. An expanding viscous contact wave formed as a result of the asymmetric interaction generates weak pressure and disturbances in the space between two reflected shock waves.
Photolysis of 1,3,2,4-benzodithiadiazine (1) at ambient temperature yields stable 1,2,3-benzodithiazolyl radicals.

In order to reveal the mechanism of this unusual transformation, the photochemistry of 1 was studied in argon matrices using IR and UV−vis spectroscopy. A series of intermediates, including four- and five-membered heterocyclic and o-quinoid acyclic species, were characterized spectroscopically with the help of quantum chemical calculations.

With selective irradiation, these intermediates can be mutually interconverted as well as converted back to the starting compound 1.
The control system of the X-ray complex LIA-20 is based on the Tango Controls framework. Data archiving subsystem HDB++ was improved during the work for efficient storage of waveforms.

PostgreSQL DBMS support as a storage was added. PostgreSQL extension 'pguint' for unsigned numbers support was modified to support the binary transfer mode during this work. Performance testing of the modified 'pguint' extension and the new DBMS interface was performed.

This solution allowed to significantly increase the performance of HDB++, reduce the amount of data stored in the database, as well as remove restrictions on the size of the stored data.
Fiber-optic communication systems are nowadays facing serious challenges due to fast growing demand on capacity from various new applications and services.It is now well recognised that nonlinear effects limit the spectral efficiency and transmission reach of modern fiber-optic communications.Nonlinearity compensation is therefore widely believed to be of paramount importance for increasing the capacity of future optical networks.Recently, there has been a steadily growing interest in the application of a powerful mathematical tool -the nonlinear Fourier transform (NFT) -in the development of fundamentally novel nonlinearity mitigation tools for fiber-optic channels.It has been recognized that, within this paradigm, the nonlinear crosstalk due to the Kerr effect is effectively absent, and fiber nonlinearity due to Kerr effect can enter as a constructive element rather than a degrading factor.The novelty and the mathematical complexity of the NFT, the versatility of the proposed system designs, and the lack of a unified vision of an optimal NFT-type communication system however constitute significant difficulties for communication researchers.In this paper, we therefore survey the existing approaches in a common framework and review the progress in this area with a focus on practical implementation aspects.First, an overview of existing key algorithms for the efficacious computation of the direct and inverse NFT is given, and the issues of accuracy and numerical complexity are elucidated.We then describe different approaches for the utilization of the NFT in practical transmission schemes.After that we discuss the differences, advantages and challenges of various recently emerged system designs employing the NFT, and the efficiency estimation available up-to-date.With many practical implementation aspects still being open, our minireview is aimed at helping researchers to assess the perspectives, understand the bottle-necks, and envision the development paths in the upcoming of NFT-based transmission technologies.
Wolbachia are maternally inherited symbiotic bacteria that are widespread among arthropods and filarial nematode parasites. It has been found in all main insect orders although some of them are still insufficiently studied. We performed PCR-screening for 15 species, 252 samples of fleas (Siphonaptera), that had been collected in the Sverdlovsk region and Khabarovsk territory. Six new symbiotic associations of Wolbachia-Siphonaptera were found for the first time. On the basis of earlier published data and the results of the current study we estimate that a minimum of 500 out of 2000 species in the Siphonaptera order are infected with Wolbachia
microwave-induced resistance oscillations previously observed in high mobility GaAs-based heterostructures

detailed study of terahertz (THz) photoresistivity in a strained HgTe three-dimensional topological insulator (3D TI) for all Fermi level positions: inside the conduction and valence bands and in the bulk gap. In the presence of a magnetic field, we detect a resonance corresponding to the cyclotron resonance (CR) in the top surface Dirac fermions (DFs) and examine the nontrivial dependence of the surface state cyclotron mass on the Fermi level position. We also detect additional resonant features at moderate electron densities and demonstrate that they are caused by the mixing of surface DFs and bulk electrons

At high electron densities, we observe THz radiation-induced 1/B-periodic low-field magneto-oscillations coupled to harmonics of the CR and demonstrate that they have a common origin with microwave-induced resistance oscillations previously observed in high mobility GaAs-based heterostructures. This observation attests the superior quality of a 2D electron system formed by helical surface states in strained HgTe films
Although the evolutionary importance of meiotic recombination is not disputed, the significance of interspecies differences in the recombination rates and recombination landscapes remains under-appreciated. Recombination rates and distribution of chiasmata have been examined cytologically in many mammalian species, whereas data on other vertebrates are scarce.

Immunolocalization of the protein of the synaptonemal complex (SYCP3), centromere proteins and the mismatch-repair protein MLH1 was used, which is associated with the most common type of recombination nodules, to analyze the pattern of meiotic recombination in the male of two species of iguanian lizards, Anolis carolinensis Voigt, 1832 and Deiroptyx coelestinus (Cope, 1862). These species are separated by a relatively long evolutionary history although they retain the ancestral iguanian karyotype.

In both species similar and extremely uneven distributions of MLH1 foci along the macrochromosome bivalents were detected: approximately 90% of crossovers were located at the distal 20% of the chromosome arm length. Almost total suppression of recombination in the intermediate and proximal regions of the chromosome arms contradicts the hypothesis that 'homogenous recombination' is responsible for the low variation in GC content across the anole genome. It also leads to strong linkage disequilibrium between the genes located in these regions, which may benefit conservation of co-adaptive gene arrays responsible for the ecological adaptations of the anoles.
The author discusses the issues of implementation of target management approaches to the long-term development of regions of the Russian Federation. The success of apply-ing such approaches to planning and management at the regional level depends on a choice of priorities and ratio between and sequence of development of programs and pro-jects in the planning process, the quality of the techniques applied, and a financial support of the planned results. The article shows that a project approach is of priority for the development of Russian regional policy. Regional programs are a set of basic projects that are not always aimed at developing territories and domestic markets. Our analysis of the strategic documents of the Russian Government shows that most of Siberian regions are not considered as strategically important ones for the country. These facts together with the ongoing centralization of financial resources at the level of the Federal center are key obstacles in implementing development programs for Siberia and units of the Russian Federation's located in Siberia as well as those for the Russian Far East.
The author analyzes the history of the unique mountain-shaped ancient ritual vessels – Boshanlu (博山爐) censers, known in China since the Western Han era (202 BC – 8 AD), based on research obtained through written, archaeological and museum sources, as well as material from the author’s field research in East Asia. The mountain-shaped censer openly embodies symbols of Taoist interpretations of the holy 仙 xian and the search for immortality.

Subsequently, once the incense burners began to incorporate Buddhist symbols, they gained great importance in Buddhist ritual practices. The design of these vessels gradually transformed under the influence of Buddhism, as Taoist symbols were phased out in favor of various Buddhist attributes. These incense burners became an integral decorative element of the Buddhist altar (alongside flower vases and candlesticks). Having ceased its time of mass use in the post-Han years, Boshanlu censer have not completely disappeared. Their memory has survived among burial imagery, cave and stone bas-reliefs and Buddhist-themed sculptural compositions.

The article provides the research of the most prominent issues of the Southern Liang, Northern Qi and Sui dynasties’ cultural heritage (second half of the 6th century) and shows their influence on the Boshanlu censers’ exterior and similarities of the latter with the gilt-bronze Baekje (百済金銅大香爐) incense burner. After a profound analysis, taking into account latest research, the symbolism which encompassed Baekje incense burners (at the turn of the 6–7th centuries) has been found to contain common features with the Chinese mountain-shaped censers, characterized by elements that allow this vessel to be classified as a unique item, symbolically reflecting an entire complex of various religious and philosophical representations, including Taoist-Buddhist concepts, local cults and local versions of palace ceremonies and everyday practices of the people of the state of Baekje.
Efficiency of collective beam-plasma interaction strongly depends on the growth rates of dominant instabilities excited in the system. Nevertheless, exact calculations of the full unstable spectrum in the framework of relativistic kinetic theory for arbitrary magnetic fields and particle distributions were unknown until now. In this paper, we give an example of such a calculation answering the question whether the finite thermal spreads of plasma electrons are able to suppress the fastest growing modes in the beam-plasma system. It is shown that nonrelativistic temperatures of Maxwellian plasmas can stabilize only the oblique instabilities of relativistic beam. On the contrary, non-Maxwellian tails typically found in laboratory beam-plasma experiments are able to substantially reduce the growth rate of the dominant longitudinal modes affecting the efficiency of turbulent plasma heating.
We consider magnetic Tonelli Hamiltonian systems on the cotangent bundle of the 2-sphere, where the magnetic form is not necessarily exact. It is known that, on very low and on high energy levels, these systems may have only finitely many periodic orbits. Our main result asserts that almost all energy levels in a precisely characterized intermediate range $(e_0,e_1)$ possess infinitely many periodic orbits. Such a range of energies is non-empty, for instance, in the physically relevant case where the Tonelli Lagrangian is a kinetic energy and the magnetic form is oscillating (in which case, $e_0=0$ is the minimal energy of the system).
The intermediates formed upon the interaction of methane with Cu-modified ZSM-5 zeolites (Cu/H-ZSM-5) have been analyzed with solid-state NMR spectroscopy and DFT methods.

Methane activation by Cu/H-ZSM-5 zeolites gives rise to three distinct surface methoxy-like species (−O–CH3) detected by 13C MAS NMR spectroscopy with specific chemical shifts in the range of 53–63 ppm. DFT calculations on representative cluster models of different sites potentially present in Cu/H-ZSM-5 have been used to assign these signals to (i) methanol adsorbed on two neighboring Cu sites (Cu–(HOCH3)–Cu, 62.6 ppm), (ii) methanol adsorbed on zeolite Brønsted acid sites (52.9 ppm), and (iii) lattice-bound methoxy groups (Si–O(CH3)–Al, 58.6).

The formation of these methoxy-like intermediates depends on the Cu loading and, accordingly, the type of Cu species in the Cu/H-ZSM-5 zeolite. For the sample with low (0.1 wt %) Cu loading containing exclusively mononuclear isolated Cu species, only the intermediates ii and iii have been detected. The Cu-bound intermediate (i) is formed upon methane activation by multinuclear Cu sites featuring Cu–O–Cu bridging moieties present in the materials with relatively higher Cu loading (1.38 wt %). The presented results indicate that methane activation by Cu/H-ZSM-5 can be promoted by both mono- and multinuclear Cu species confined in the zeolite matrix.
The closed vortex dynamics is considered in the nonrelativistic version of the Abelian Higgs Model. The effect of the exchange of excitations propagating in the medium on the vortex string motion is taken into account. The obtained are the effective action and the equation of motion both including the exchange of the propagating excitations between the distant segments of the vortex and the possibility of its interaction with the static fermion asymmetric background. They are applied to the derivation of the time dependence of the basic geometrical contour characteristics.
Overall, the magnetic behavior of 2 is similar to that of [CrTol2]+[1]− and [CrCp*2]+[1]−, i.e., changing the cation [MAr2]+ 3d atom M = Cr (Z = 24) with weak spin–orbit coupling (SOC) to a 4d atom M = Mo (Z = 42) with stronger SOC does not affect macroscopic magnetic properties of the salts.

Low-temperature interaction of [1,2,5]thiadiazolo[3,4-c][1,2,5]thiadiazole (1) with MoMes2 (Mes = mesitylene/1,3,5-trimethylbenzene) in tetrahydrofuran gave the heterospin (S1 = S2 = 1/2) radical-ion salt [MoMes2]+[1]− (2) whose structure was confirmed by single-crystal X-ray diffraction (XRD). For the XRD structure of salt 2, parameters of the Heisenberg spin-Hamiltonian were calculated using the broken-symmetry DFT and CASSCF approaches.

The structure revealed alternating layers of the cations and anions with the Mes ligands perpendicular, and the anions tilted by 45°, to the layer plane. At 300 K the effective magnetic moment of 2 is equal to 2.40 μB (theoretically expected 2.45 μB) and monotonically decreases with lowering of the temperature. In the temperature range 2–300 K, the molar magnetic susceptibility of 2 is well-described by the Curie–Weiss law with parameters C and θ equal to 0.78 cm3 K mol–1 and −31.2 K, respectively. The complex 3D magnetic structure with both the ferromagnetic (FM) and antiferromagnetic (AF) exchange interactions was revealed with the latter as dominating. Salt 2 is thermally unstable and slowly loses the Mes ligands upon storage at ambient temperature. Under the same reaction conditions, interaction of 1 with MoTol2 (Tol = toluene) proceeded with partial loss of the Tol ligands to afford diamagnetic product.
Usually, the emission of low-energy photons in electron-positron (or electron-ion) bunch collisions is calculated with the same approach as for synchrotron radiation (beamstrahlung). However, for soft photons (E_gamma < E_c where E_c is a critical photon energy), when the coherence length of the radiation becomes comparable to the bunch length, the beamstrahlung approximation becomes invalid.

In this paper, we present results of our calculation for this region based on approximation of classical currents. We consider several colliders with dense bunches. The number of low-energy photons dN_gamma emitted by N_e electrons per bunch crossing in the energy interval dE_gamma is dN_gamma = alpha g N_e dE_gamma/E_gamma, where alpha is the fine-structure constant, and the function g, which depends on the bunch parameters, typically is of order unity for modern colliders.

In particular, for the ILC, we find that E_c = 83 keV and g=5.5 at a vanishing beam axis displacement, and g=0.88, E_c=0.24 keV for KEKB. We also calculate the specific dependence of dN_gamma on the impact parameter between the two beam axes. In principle, the latter aspect allows for online monitoring of the beam axis displacement.