Hengzongshu/ArticleAgent huggingface dataset:
Isotopic and trace element variations within single diamond crystals are widely known from both natural stones and synthetic crystals. A number of processes can produce variations in carbon isotope composition and nitrogen abundance in the course of diamond crystallization. Here, we present evidence of carbon and nitrogen fractionation related to the growing surfaces of a diamond. We document that difference in the carbon isotope composition between cubic and octahedral growth sectors is solvent-dependent and varies from 0.7‰ in a carbonate system to 0.4‰ in a metal-carbon system. Ab initio calculations suggest up to 4‰ instantaneous 13C depletion of cubic faces in comparison to octahedral faces when grown simultaneously. Cubic growth sectors always have lower nitrogen abundance in comparison to octahedral sectors within synthetic diamond crystals in both carbonate and metal-carbon systems. The stability of any particular growth faces of a diamond crystal depends upon the degree of carbon association in the solution. Octahedron is the dominant form in a high-associated solution while the cube is the dominant form in a low-associated solution. Fine-scale data from natural crystals potentially can provide information on the form of carbon, which was present in the growth media.
On the basis of the studies conducted previously

we have developed a pilot model of the experimental-industrial prototype for removing heat fluxes with densities of up to 1000 W/cm2 from the surface of the heat-stressed element with dimensions 10x10 mm2

Testing of the model has proved its efficiency in continuous operation
Aim. The aim is to explore the molecular and biological characteristics of influenza virus subtype H6N8. Material and Methods. Regular collecting of biological samples from wild birds was carried out in 2016 in the south of Western Siberia. Isolation of avian influenza virus strains from birds’ cloacal swabs was performed using three passages in embryonated chicken eggs. Hemagglutination assay was used to detect viruses in the allantoic fluid. Type and subtype of influenza viruses were identified using reverse transcription PCR (RT‐PCR). Results. This is the first time the avian influenza virus H6N8 subtype has been isolated in Russia. Phylogenetic analysis revealed that hemagglutinin (HA) and neuraminidase (NA) segments of A/gadwall/Chany/97/2016(H6N8) strain genome belonged to the Eurasian lineages of avian influenza viruses. Phylogenetic analysis showed that the HA sequence of the strain was closely related to the strain isolated from a duck in Bangladesh in 2015 (A/duck/Bangladesh/25767/2015(H6N1). Conclusion. Avian influenza viruses subtype H6N8 have the ability to circulate among wild waterfowl and poultry, increasing the chance of reassortment and transmission of H6 virus strains among birds. For this reason, it is of crucial importance to strengthen surveillance for avian influenza H6 subtype among wild birds in the south of Western Siberia.
Double-walled carbon nanotubes (DWCNTs) are fluorinated using (1) fluorine F2 at 200 °C, (2) gaseous BrF3 at room temperature, and (3) CF4 radio-frequency plasma functionalization.

These have been comparatively studied using transmission electron microscopy and infrared, Raman, X-ray photoelectron, and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. A formation of covalent C-F bonds and a considerable reduction in the intensity of radial breathing modes from the outer shells of DWCNTs are observed for all samples. Differences in the electronic state of fluorine and the C-F vibrations for three kinds of the fluorinated DWCNTs are attributed to distinct local surroundings of the attached fluorine atoms. Possible fluorine patterns realized through a certain fluorination technique are revealed from comparison of experimental NEXAFS F K-edge spectra with quantum-chemical calculations of various models.

It is proposed that fluorination with F2 and BrF3 produces small fully fluorinated areas and short fluorinated chains, respectively, while the treatment with CF4 plasma results in various attached species, including single or paired fluorine atoms and -CF3 groups. The results demonstrate a possibility of different patterning of carbon surfaces through choosing the fluorination method.
To reduce emissions of harmful substances into the atmosphere, it is very important to create compact, energy-efficient catalytic units for afterburning volatile organic compounds. A key component of such units is the catalyst cartridge. The efficiency of its operation is provided by the supply of a gas flow with a uniform velocity field.

To solve the problem, an experimental model of the gas flow distributor and an aerodynamic stand for its testing were created. A set of wing-shaped inserts was used to align the velocity profile in the rotary section of the model. The form and arrangement of the blades were chosen by numerical simulation.

Numerical calculations were verified on the basis of measurement of velocity fields in the model sections.
An interpretation is made of rocket data obtained from an electric field mill (EFM) sensor during the international rocket‐radar campaign NLC‐91.

The interpretation is based on a laboratory study of the interaction of a water particle beam with the EFM recovered after the rocket flight. Both rocket and laboratory data show that the field mill is sensitive to ice microparticle impacts and that perturbations in the EFM signal observed in the vicinity of noctilucent clouds and an enhanced radar echo (PMSE) layer are caused not only by atmospheric electric fields but also by the impact of solid particles.

The altitude range of the impact signatures suggests the presence of ice particles in the PMSE region above the height of the optically detected noctilucent clouds. The analysis of the rocket data on the basis of the laboratory results allows us to estimate sizes of these PMSE particles to be 13–40 nm.
The nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. The dual-phase xenon time-projection chamber is the leading technology to cover the available parameter space for Weakly Interacting Massive Particles (WIMPs), while featuring extensive sensitivity to many alternative dark matter candidates. These detectors can also study neutrinos through neutrinoless double-beta decay and through a variety of astrophysical sources. A next-generation xenon-based detector will therefore be a true multi-purpose observatory to significantly advance particle physics, nuclear physics, astrophysics, solar physics, and cosmology. This review article presents the science cases for such a detector.
This article develops an optimization neoliberal scenario 1 and a socially-oriented scenario 2 of capitalist reproduction based on US statistics for 2020-40. Scenario 1 preserves the socio-economic structure that generated the systemic, structural, and cyclical crisis of capitalism; it assumes a regular repetition of overproduction and paroxysms. The transforming social relations in the direction of tightening the workers’ control over production and the primary distribution of national income take place in scenario 2. Comparison of these pioneer scenarios with the projections by the Congressional Budget Office in the USA for 2020-2030 reveals the underestimation by the latter of the depth and duration of the epoch-making corona-crisis, which owes its name to the Covid-19 pandemic. The necessity for Russia of revival of the ideology of socialism, understood as the first phase of communism, is substantiated.
Spin-labelled compounds are widely used in chemistry, physics, biology, and material sciences, but the directed synthesis of some functionalized organic radicals is still a challenge. We succeeded in the preparation of a tetrazolyl-substituted nitronyl nitroxide radical in pure crystalline form. According to the single-crystal X-ray data, intra- (NH…O, 2.43 Å) and inter-molecular hydrogen bonds (NH…O, 1.91 Å) are formed between NH groups of the tetrazole cycles and O atoms of the paramagnetic moieties. The intermolecular H-bonds connect the molecules forming chains along the a-axis. Moreover, there are short intermolecular contacts between the O atoms (3.096 Å) and between the O and C atoms (3.096 Å) of the nitronyl nitroxide moieties within the chain. The spin-unrestricted broken-symmetry calculations performed at the BS-UB3LYP/def2-TZVP level of theory predicted a sufficient ferromagnetic interaction (J ≈ 20 cm–1) between the adjacent radicals inside the chain, but a weak antiferromagnetic interaction (−J ≤0.2 cm−1) between the nearest radicals belonging to the different chains. Thus, a rare case when stable radicals, the tetrazolyl-substituted nitronyl nitroxides, are ordered into ferromagnetic chains was revealed; an investigation of the magneto-structural correlations inherent in the nitroxide radical will demand a special experiment in the sub-Kelvin regime.
We reveal two distinct intercalated bromine species and propose bromination mechanisms of fluorinated carbons depending on the fluorination level.
Background Recent studies have revealed an unexpected diversity of domain architecture among FcR-like receptors that presumably fulfill regulatory functions in the immune system. Different species of mammals, as well as chicken and catfish have been found to possess strikingly different sets of these receptors.

To better understand the evolutionary history of paired receptors, we extended the study of FcR-like genes in amphibian representatives Xenopus tropicalis and Xenopus laevis. Results The diploid genome of X. tropicalis contains at least 75 genes encoding paired FcR-related receptors designated XFLs. The allotetraploid X. laevis displays many similar genes primarily expressed in lymphoid tissues. Up to 35 domain architectures generated by combinatorial joining of six Ig-domain subtypes and two subtypes of the transmembrane regions were found in XFLs. None of these variants are shared by FcR-related proteins from other studied species. Putative activating XFLs associate with the FcRγ subunit, and their transmembrane domains are highly similar to those of activating mammalian KIR-related receptors. This argues in favor of a common origin for the FcR and the KIR families. Phylogenetic analysis shows that the entire repertoires of the Xenopus and mammalian FcR-related proteins have emerged after the amphibian-amniotes split.

Conclusion FcR- and KIR-related receptors evolved through continual species-specific diversification, most likely by extensive domain shuffling and birth-and-death processes. This mode of evolution raises the possibility that the ancestral function of these paired receptors was a direct interaction with pathogens and that many physiological functions found in the mammalian receptors were secondary acquisitions or specializations.
A numerical simulation of the wave distribution along a mine with permeable barriers located in it was carried out within the framework of the equilibrium inviscid setting and without taking into account chemical reactions.

The configurations of obstacles with different permeability indices along the length of the working were studied; the porosity of the obstacles varied in the range from 0.2 to 0.8.

With an increase in the free cross-section of the barrier (porosity), the load can additionally be reduced, however, barriers with high permeability reduce the efficiency of the barrier, which is confirmed by the increased pressure drop on the shock wave front after it passes the barrier.
Objective: To determine the effects of stress at work on the risk of arterial hypertension (AH) in population of 25–64 years in Russia/Siberia Design and method: Under the III screening of the WHO MONICA-psychosocial program, a random representative sample of a population of both sexes aged of 25–64 years in Novosibirsk was examined in 1994 (n = 1346, 48.8% males; mean age 44.9 ± 0.4 years, response rate - 77.3%). The screening program performed in frame budgetary issue # AAAA-A17-117112850280-2. It's included: registration of socio-demographic data, determination of stress at work. The duration of follow-up was 16 years. Results: A high level of stress at work was in 29.5% of men and 31.6% of women (p > 0.05). An increase in the level of high stress at the workplace was found for men - workers engaged in moderate physical labor (34.7%) compared with women (17.7%) in this group (p < 0.05). The risk of AH over a 16-year period in those who experiencing stress at work was 1.4-fold higher in men and 1.27-fold higher in women. An increase in the risk of hypertension was observed in widowed men HR = 2.5. Risk of AH gradually increased in women depending on age group: 35–44 years – HR = 1.699; 45–54 years – HR = 2.472 and 55–64 years – HR = 2.694 (p for all < 0.05). Conclusions: High levels of stress at work increased the risk of hypertension both in men and women.
The development of an algorithm for automated selection of boundaries based on well logging data with help of wavelet transform, its application on different well logging methods, determination of the optimal parameters of the algorithm and the exponency of each method, the comparison of the result of the algorithm with the work of a specialist geologist.
For the first time a remarkably exact match was achieved of the results from modelling of CW-pumped SC in a highly non-linear fibre with experiment (A.K. Abeeluck et al. Opt. Lett. 29, 2163-2165 (2004)) where a wide-band SC in the 1200-1780-nm range was reported.

Our simulation results show that decay of CW pump radiation into a train of sub-picosecond pulses induced by the modulation instability leads to formation of optical solitons. Energy and carrier frequency of the solitons are random parameters because of quantum noise in the pump radiation.

We found that a relatively smooth SC spectrum obtained by us from modelling and observed experimentally comes from averaging of a large number of soliton spectra and the spectrum of short-wavelength non-soliton radiation that is generated because of resonant pumping of energy from solitons.
Flavor-changing neutral currents are not present in the Standard Model at tree level and are suppressed in loop processes by the unitarity of the Cabibbo-Kobayashi-Maskawa matrix; the corresponding rates for top quark decay processes are experimentally unobservable. Extensions of the Standard Model can generate new flavor-changing neutral current processes, leading to signals which, if observed, would be unambiguous evidence of new interactions. A data set corresponding to an integrated luminosity of $36.1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of $pp$ collisions at a center-of-mass energy of $\sqrt{s}=13\text{ }\text{ }\mathrm{TeV}$ recorded with the ATLAS detector at the Large Hadron Collider is used to search for top quarks decaying to up or charm quarks with the emission of a Higgs boson, with subsequent Higgs boson decay to final states with at least one electron or muon. No signal is observed and limits on the branching fractions $\mathcal{B}(t\ensuremath{\rightarrow}Hc)<0.16%$ and $\mathcal{B}(t\ensuremath{\rightarrow}Hu)<0.19%$ at 95% confidence level are obtained (with expected limits of 0.15% in both cases).
Cold and drought are two of the most severe threats affecting the growth and productivity of the tea plant, limiting its global spread. Both stresses cause osmotic changes in the cells of the tea plant by decreasing their water potential. To develop cultivars that are tolerant to both stresses, it is essential to understand the genetic responses of tea plant to these two stresses, particularly in terms of the genes involved.

In this study, we combined literature data with interspecific transcriptomic analyses (using Arabidopsis thaliana and Solanum lycopersicum ) to choose genes related to cold tolerance. We identified 45 stress-inducible candidate genes associated with cold and drought responses in tea plants based on a comprehensive homologous detection method. Of these, nine were newly characterized by us, and 36 had previously been reported. The gene network analysis revealed upregulated expression in ICE1 -related cluster of bHLH factors, HSP70/BAM5 connected genes (hexokinases, galactinol synthases, SnRK complex, etc.) indicating their possible co-expression.

Using qRT-PCR we revealed that 10 genes were significantly upregulated in response to both cold and drought in tea plant: HSP70, GST, SUS1, DHN1, BMY5, bHLH102, GR-RBP3, ICE1, GOLS1 , and GOLS3 . SnRK1.2, HXK1/2, bHLH7/43/79/93 were specifically upregulated in cold, while RHL41, CAU1, Hydrolase22 were specifically upregulated in drought. Interestingly, the expression of CIP was higher in the recovery stage of both stresses, indicating its potentially important role in plant recovery after stress. In addition, some genes, such as DHN3, bHLH79, PEI54, SnRK1.2, SnRK1.3 , and Hydrolase22 , were significantly positively correlated between the cold and drought responses. CBF1, GOLS1, HXK2 , and HXK3 , by contrast, showed significantly negative correlations between the cold and drought responses. Our results provide valuable information and robust candidate genes for future functional analyses intended to improve the stress tolerance of the tea plant and other species.
The potential connection between consumption of red meat and development of colorectal cancer has been the subject of scientific discussion for a long time. However, uncertainty persists to this day.

Consumption of processed meat and red meat may play a role in colon carcinogenesis, among other risk factors.

An analysis of the updated data demonstrates an ever-smaller connection between red meat consumption and colorectal cancer incidence.
Length and quality of life are important to us all, yet identification of promising drug targets for human aging using genetics has had limited success. Many aging-related phenotypes share a common genetic component, but to disentangle disease-specific variants from aging-specific ones has been challenging.

In the present study, we combine six European-ancestry genome-wide association studies of human aging traits—healthspan, father and mother lifespan, exceptional longevity, frailty index and self-rated health—in a principal component framework that maximizes their shared genetic architecture. Using proteome-wide, two-sample, Mendelian randomization and colocalization, we provide robust evidence for a detrimental effect of blood levels of apolipoprotein(a) and vascular cell adhesion molecule 1 on aging-GIP1.

The first principal component (aging-GIP1) captures both length of life and indices of mental and physical wellbeing. We identify 27 genomic regions associated with aging-GIP1, and provide additional, independent evidence for an effect on human aging for loci near HTT and MAML3 using a study of Finnish and Japanese survival. Together, our results demonstrate that combining multiple aging traits using genetic principal components enhances the power to detect biological targets for human aging. Here Timmers et al. combined several genetics studies of aging-related traits to identify common underlying genetic factors that contribute to aging.
Folklore studies consist of working with audio and video materials, which contain the reproduction of elements of folk art in national languages, creating specific text recordings with translation and comments, written in a public language, and building a picture of the worlds based on available resources.

To structure and present this content, we use an ontology-based approach, which allows linguists to describe not only the resources, but also subject knowledge in the Semantic Web style, i.e. using hierarchies of classes, objects and relationships between them. The main feature of folklore research is the need for synchronization of translations, which is achieved by creating a parallel corpora of texts, and the ability to label texts with entities of the subject area, which is called semantic markup. Moreover, each corpus is connected with a certain nationality and has both its own national language and unique system of concepts of the world around it. Such representation imposes many non-standard requirements for the platform, such as working with arbitrary languages, supporting many ontologies, ensuring the creation and editing of national subject ontologies, semantic text markup, presentation, navigation, and search across heterogeneous resources. The developed platform provides all the necessary tools for research, including tools for the development of ontologies in specific national subject areas and manual annotation of texts in real time by several specialists. Resources of the web-platform are located in the resource ontology, which includes such concepts as corpus, video resource, audio resource, graphic image, person, geographical location, genre of text, etc. Ontologies of subject areas are presented in the form of a hierarchy, where the ontology of universals, common to all folklore studies, is located at the top level. At the same time, inherited ontologies are specialized for each represented national corpus. The web application is built with Python Django framework and the TypeScript React library. Data storage is implemented using the Postgres database.

The developed platform provides all the necessary tools for research, including tools for the development of ontologies in specific national subject areas and manual annotation of texts in real time by several specialists.
This study was aimed to evaluate the synaptic plasticity in projections from the dorsal lateral region (Dl) to the bilateral dorsal medial region (Dm) of the zebrafish telencephalon. The results showed that unilateral electrical stimulation of the Dl evokes a negative field potential (FP) in both the contralateral and ipsilateral side of the Dm. We tested synaptic plasticity, including high-frequency stimulation-induced LTP (HFS-LTP) and low-frequency stimulation-induced LTD (LFS-LTD). We demonstrated that HFS-induced bilateral LTP is NMDAR-dependent by the application of an NMDAR antagonist, DL-AP5 (30 μM, suprafused for 10 min), which blocked the HFS-induced LTP in both the contralateral and ipsilateral Dm. In addition, LTP was restored after DL-AP5 was washed out by continuous aCSF suprafusion. These results suggested that the potentiation is NMDAR-dependent. Either LFS (1 Hz for 20 min) or applying the mGluR agonist, DHPG (40 μM, suprafused for 10 min) successfully induced bilateral LTD for at least 1 h. Furthermore, both the contralateral fEPSP and LTP vanished after ablation of the anterior commissure. In conclusion, the results of the present study suggested that the projection between the Dl and contralateral Dm in the telencephalon of zebrafish is via the anterior commissure and possesses synaptic plasticity.
The effect of the addition of a propane hydrate seed on the dynamics of nucleation in propane solutions based on pure or seawater is considered within the framework of the molecular dynamics method.

The time dependencies of the number of long-lived hydrogen bonds and the number of 5 12 and 5 12 6 4 cavities formed were calculated.

It was shown that presence of the seed leads to the immediate increase in the number of 'stable' hydrogen bonds and the growth of hydrate nuclei, which can significantly reduce the induction time of hydrate formation in industrial use and, consequently, enhance the efficiency of the hydrate method of seawater desalination.