Hengzongshu/ArticleAgent huggingface dataset:
Spark plasma sintering (SPS), a sintering method that uses the action of pulsed direct current and pressure, has received a lot of attention due to its capability of exerting control over the microstructure of the sintered material and flexibility in terms of the heating rate and heating mode. Historically, SPS was developed in search of ways to preserve a fine-grained structure of the sintered material while eliminating porosity and reaching a high relative density. These goals have, therefore, been pursued in the majority of studies on the behavior of materials during SPS. Recently, the potential of SPS for the fabrication of porous materials has been recognized.

The major approaches to the formation of porous materials by SPS are described: partial densification of powders (under low pressures, in pressureless sintering processes or at low temperatures), sintering of hollow particles/spheres, sintering of porous particles, and sintering with removable space holders or pore formers. In the case of conductive materials processed by SPS using the first approach, the formation of inter-particle contacts may be associated with local melting and non-conventional mechanisms of mass transfer. Studies of the morphology and microstructure of the inter-particle contacts as well as modeling of the processes occurring at the inter-particle contacts help gain insights into the physics of the initial stage of SPS. For pre-consolidated specimens, an SPS device can be used as a furnace to heat the materials at a high rate, which can also be beneficial for controlling the formation of porous structures. In sintering with space holders, SPS processing allows controlling the structure of the pore walls.

This article is the first review to focus on the achievements in this area. In this article, using the literature data and our own research results, we have discussed the formation and structure of porous metals, intermetallics, ceramics, and carbon materials obtained by SPS.
We have synthesized the orthocarbonate Sr3[CO4]O in a laser-heated diamond anvil cell at 20 and 30 GPa by heating to ≈3000 (300) K. Afterward, we recovered the orthocarbonate with [CO4]4– groups at ambient conditions.

Single-crystal diffraction shows the presence of [CO4]4– groups, i.e., sp3-hybridized carbon tetrahedrally coordinated by covalently bound oxygen atoms. The [CO4]4– tetrahedra are located in a cage formed by corner-sharing OSr6 octahedra, i.e., octahedra with oxygen as a central ion, forming an antiperovskite-type structure.

At high pressures, the octahedra are nearly ideal and slightly rotated. The high-pressure phase is tetragonal (I4/mcm). Upon pressure release, there is a phase transition with a symmetry lowering to an orthorhombic phase (Pnma), where the octahedra tilt and deform slightly.
Loanwords are important parts of lexical structure of a language, as well as significant markers of changes in the society. Тhe studing of loanwords has particular significance and relevance. Greek loanwords are among the oldest layers of loanwords in the Russian language, and their study is especially important because no systematic studies of the volume, the place and role of Greek loanwords in various periods of the Russian language’s history as well as in the structure of the modern Russian language already exist.

The first translations from the Greek language into Slavonic played a significant role in the process of transposition of Greek loanwords. One of these early translations was the translation of Orationes of St. Gregory Nazianzen. The Slavic text of the homilies included in the XIII Homilies of Gregory the Theologian offers wide possibilities to monitor the processes of borrowing and adaptation of Greek words.

Analyzing Greek loanwords in this translation lets us draw some conclusions regarding transposition of foreign language vocabulary from one language to another and the reasons for differences in the adaptation of loanwords.
Huntington's disease (HD) is an autosomal dominant neurodegenerative disease caused by mutation in the HTT gene encoding HTT protein. The mutant protein leads to the neuronal death through dysregulation of multiple cellular processes. HD human induced pluripotent stem cells (iPSCs) represent a useful and valid model for the disease study. iPSC line from HD patient with 47 CAG repeats in HTT was generated from blood mononuclear cells by non-integrating episomal vectors. The iPSC line retained the mutation, expressed pluripotency markers, had a normal karyotype and displayed in vitro differentiation to the three germ layers. Resource table.Unique stem cell lines identifierICGi007-AAlternative name(s) of stem cell line47Q-3LfInstitutionFederal Research Center Institute of Cytology and Genetics, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, RussiaContact information of distributorElena V. Grigor'eva[email protected]Type of cell linesiPSCOriginHumanAdditional origin infoAge: 27Sex: FEthnicity: CaucasianCell SourcePeripheral blood mononuclear cellsClonalityClonalMethod of reprogrammingTransgene free episomal plasmid vectorsGenetic ModificationYESType of ModificationHereditaryAssociated diseaseHuntington's diseaseGene/locusHTT/4p16.3Method of modificationN/AName of transgene or resistanceN/AInducible/constitutive systemN/ADate archived/stock dateDecember 2017Cell line repository/bankhttps://hpscreg.eu/cell-line/ICGi007-AEthical approvalThe generation of iPSC line from cells donated by patient with informed consent was reviewed and approved by "Center of New Medical Technology in Akademgorodok" (protocol No. 21)
The cross section of the process e+ e– → π+ π– π0 was measured with the CMD-3 detector at the electron-positron collider VEPP-2000 in the energy region from 750 MeV to 800 MeV in c.m.s. This measurement was based on the data collected in 2013 and related to an integrated luminosity of about 7.8 pb–1. The procedure for obtaining the Born cross section and determining the parameters of the ω-meson was worked out. The preliminary ω-meson parameters mω = 782.70 ± 0.02 ± ± 0.11 MeV, Гω = 8.74 ± 0.05 ± 0.22 MeV, σ0(ω → π+ π– π) = 1545 ± 4 ± 39 nb were obtained. The results were compared with previous data and proven to demonstrate a good agreement with them.
Recent discoveries of weak and fast optical transients raise the question of their origin. We investigate the minimum ejecta mass associated with core-collapse supernovae (SNe) of Type Ic. We show that mass transfer from a helium star to a compact companion can produce an ultra-stripped core which undergoes iron core collapse and leads to an extremely fast and faint SN Ic. In this Letter, a detailed example is presented in which the pre-SN stellar mass is barely above the Chandrasekhar limit, resulting in the ejection of only ~0.05-0.20 M ☉ of material and the formation of a low-mass neutron star (NS). We compute synthetic light curves of this case and demonstrate that SN 2005ek could be explained by our model. We estimate that the fraction of such ultra-stripped to all SNe could be as high as 10-3-10-2. Finally, we argue that the second explosion in some double NS systems (for example, the double pulsar PSR J0737-3039B) was likely associated with an ultra-stripped SN Ic....
Aim . Aim of this the research presented in this article is to analyze the representation of bat (Chiroptera) viruses in various taxa of the Virae kingdom. Discussion . Currently, 260 viruses are associated with bats belonging to 19 orders, 28 families (9 DNA‐containing and 19 RNA‐containing) and 61 genera (18 DNA‐containing and 43 RNA‐containing). This number includes viruses annotated by the International Committee on the Taxonomy of Viruses (excluding synonymous species) for which the taxonomic status has been verified by sequencing subgenomic or full‐genomic nucleotide sequences. A large number of unidentified strains from bats are noteworthy – they apparently contain many future prototype viruses for new taxa. Conclusion . The data presented in this article will undoubtedly be expanded in the nearest future. This is due to the need to improve the system for prevention of dangerous epidemic and pandemic situations primarily by increasing priority attention on bat viruses. Therefore, the catalogue of bat viruses, known as of mid‐2020, presented in this paper could be considered as a kind of "starting point" for future research in this area.
Solutions containing mixtures of methylalumoxane (MAO) and i Bu 3 Al give rise to 1 H NMR signals indicative of the presence of the mixed alkyl aluminum dimers i Bu 2 Al(µ‐Me) 2 Al i Bu 2 and of mixed clusters of the type (AlMe (1 + 2 x − y ) i Bu y O (1 − x ) ) n . These mixed clusters, as well as related species present in solutions containing either MAO–Et 3 Al or commercially available modified MAO (MMAO), appear to have stronger Lewis acidic sites and greater hydrodynamic radii than comparable clusters present in solutions of MAO alone, as judged from EPR signals observed in these solutions upon addition of TEMPO.

When (SBI)ZrCl 2 (SBI = rac ‐Me 2 Si(ind) 2 ) is reacted with one of these mixed activator reagents, the mixed heterobinuclear cation [(SBI)Zr(µ‐Me) 2 AlMe i Bu] + appears to be formed, together with its methyl counterpart [(SBI)Zr(µ‐Me) 2 AlMe 2 ] + , which is normally predominant in the (SBI)ZrCl 2 /MAO system at [Al] MAO /[Zr] ratios above 100. In the presence of i Bu 3 Al, the formation of heterobinuclear cations is suppressed in favor of ion pairs containing the cation [(SBI)ZrMe] + in contact with a (MAO–TIBA)‐derived counter anion.

The greater reactivity of these contact‐ion pairs, as compared to the normally prevalent AlMe 3 adducts, as well as an increased Lewis acidity of MMAO, and the ensuing decreased coordination ability of the [Me‐(MAO–TIBA)] − counter ion as compared to [Me‐MAO] − , are likely to contribute to the positive effects of TIBA additions on the co‐catalytic activity of MAO.
The KEDR experiment, which started in 2002, is dedicated to a study of c- and b-quarks and the two-photon physics at the e+ e− collider VEPP-4M in the Budker INP. To analyze the 2γ data and estimate contribution of two-photon background events in the 1 data samples, the event generators e+ e− → e+ e− + hadrons, e+ e− → e+ e− + π+ π−, and e+ e− → e+ e− + PS (PS – pseudoscalar meson) have been developed.
The complex trans -[RuNO(NH 3 ) 4 F]SiF 6 was synthesized in quantitative yield and the structure was characterized by X-ray diffraction and spectroscopic methods. The complex crystallizes in the non-centrosymmetric space group Pn . Hirshfeld surface analysis revealed that the dominant intermolecular interactions are of types H...F and F...O, which are likely to be responsible for the packing of the molecules in a non-centrosymmetric structure.

Irradiation with blue light leads to the formation of Ru–ON (metastable state MS1) and Ru–η 2 -(NO) (metastable state MS2) bond isomers, as shown by IR and UV–Vis spectroscopy. The structural features of the MS1 isomer were elucidated by photocrystallography. The second harmonic (SH) emission can be generated by femtosecond-pulsed irradiation of the complex.

The complex exhibits exceptionally good thermal stability of the metastable state MS1, such that it can be populated by light at 290–300 K, which is important for potential applications. The generated SH is rather efficient and stable under long-term exposure. Finally, since both metastable states and harmonic generation can be generated at room temperature, an attempt to drive the SH response by photoisomerization of the nitrosyl ligand was made and is discussed.
This work presents new data on human endonuclease VIII-like 2 protein (hNEIL2), a part of DNA glycosylases of the helix-two-turn-helix structural superfamily. While X-ray structure of oNEIL2 (opossum Monodelphis) was resolved partially [1], the structure of hNEIL2 has not yet been determined. This data article describes a powerful combination of hydrogen-deuterium exchange mass spectrometry, homology modeling, and molecular dynamics simulations for protein conformational dynamics analysis. The data supplied in this work are related to the research article entitled "Dynamics and Conformational Changes in Human NEIL2 DNA Glycosylase Analyzed by Hydrogen/Deuterium Exchange Mass Spectrometry".
The quality of structural models for 1,2,4,5-tetrabromobenzene (TBB), C 6 H 2 Br 4 , based on data collected from a single crystal in a diamond anvil cell at 0.4 GPa

in situ using two different diffractometers belonging to different generations

have been compared, together with the effects of applying different data-processing strategies.
This work is focused on the characterization of a novel vanadium pentoxide catalysts on a glass-fiber support. The catalyst support consists of a non-porous glass-fiber fabric covered with an additional external surface layer of porous secondary support of SiO2.

The vanadia active component is synthesized from vanadyl oxalate precursor by means of an impulse surface thermo-synthesis method. Such catalysts demonstrate high activity and appropriate selectivity in the reaction of H2S oxidation by oxygen into sulfur in the practically important temperature range below 200°C.

According to the characterization data, the freshly prepared vanadia catalyst partially consists of mostly the amorphous and badly ordered vanadia with some part of the wellcrystallized V2O5 phase. Under the reaction conditions the main part of vanadia in the catalyst remains in the amorphous V2O5 form, while the less part becomes reduces into of VO2 and other vanadium oxides (such as VO, V2O3 V3O7 and V4O9). Most probably, the crystallized V2O5 in course of reaction is responsible for the deep oxidation of hydrogen sulphide into SO2, while the lower vanadium oxides promote the selective H2S oxidation into elemental sulfur.
We report results from a study of the spin and parity of ${\mathrm{\ensuremath{\Xi}}}_{c}(2970{)}^{+}$ using a $980\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected by the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider.

The decay angle distributions in the chain ${\mathrm{\ensuremath{\Xi}}}_{c}(2970{)}^{+}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}}_{c}(2645{)}^{0}{\ensuremath{\pi}}^{+}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}}_{c}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the ${\mathrm{\ensuremath{\Xi}}}_{c}(2970{)}^{+}$ spin $J=1/2$ over $3/2$ or $5/2$, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of ${\mathrm{\ensuremath{\Xi}}}_{c}(2970{)}^{+}$ decay branching fractions $R=\mathcal{B}[{\mathrm{\ensuremath{\Xi}}}_{c}(2970{)}^{+}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}}_{c}(2645{)}^{0}{\ensuremath{\pi}}^{+}]/\mathcal{B}[{\mathrm{\ensuremath{\Xi}}}_{c}(2970{)}^{+}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}}_{c}^{\ensuremath{'}0}{\ensuremath{\pi}}^{+}]=\phantom{\rule{0ex}{0ex}}1.67\ifmmode\pm\else\textpm\fi{}0.29{(\mathrm{stat})}_{\ensuremath{-}0.09}^{+0.15}(\mathrm{syst})\ifmmode\pm\else\textpm\fi{}0.25(\mathrm{IS})$, where the last uncertainty is due to possible isospin-symmetry-breaking effects.

This $R$ value favors the spin-parity ${J}^{P}=1/{2}^{+}$ with the spin of the light-quark degrees of freedom ${s}_{l}=0$. This is the first determination of the spin and parity of a charmed-strange baryon.
Downstream development of disturbance waves properties in annular regime of gas - liquid flow was conducted in adiabatic air-water downwards flow in a vertical pipe with inner diameter of 11.7 mm.

The measurements were conducted using brightness-based laser-induced fluorescence technique. Instantaneous distributions of local thickness of liquid film along one longitudinal section of the duct over the first 45 cm from the inlet were obtained with sampling frequency of 10 kHz. Based on these spatiotemporal plots, dependence of local average velocity of disturbance waves on downstream distance was obtained for a wide range of gas and liquid flow rates.

Three main stages of flow development were identified: a stage prior to formation of disturbance waves, a stage of constant acceleration of disturbance waves and a stage of deceleration nearly compensating the initial acceleration. Transitions to both second and third stages occur closer to the inlet at higher gas velocities and lower liquid flow rates. The initial acceleration is defined by the effect of the gas shear; it grows in parabolic manner with superficial gas velocity and shows weak dependence on liquid flow rate. The deceleration is supposed to occur due to entrainment of liquid from disturbance waves.
In this work, we elaborated heterogeneous catalysts on the basis of the Venturello complex [PO4{WO(O2)2}4]3- (PW4) and nitrogen-free or nitrogen-doped carbon nanotubes (CNTs or N-CNTs) for epoxidation of alkenes and sulfoxidation of thioethers with aqueous hydrogen peroxide. Catalysts PW4/CNTs and PW4/N-CNTs (1.8 at. % N) containing 5-15 wt. % of PW4 and differing in acidity have been prepared and characterized by elemental analysis, N2 adsorption, IR spectroscopy, HR-TEM, and HAADF-STEM. Studies by STEM in HAADF mode revealed a quasi-molecular dispersion of PW4 on the surface of CNTs. The addition of acid during the immobilization is not obligatory to ensure site isolation and strong binding of PW4 on the surface of CNTs, but it allows one to increase the PW4 loading and affects both catalytic activity and product selectivity. Catalytic performance of the supported PW4 catalysts was evaluated in H2O2-based oxidation of two model substrates, cyclooctene and methyl phenyl sulfide, under mild conditions (25-50°C). The best results in terms of activity and selectivity were obtained using PW4 immobilized on N-free CNTs in acetonitrile or dimethyl carbonate as solvents. Catalysts PW4/CNTs can be applied for selective oxidation of a wide range of alkenes and thioethers provided a balance between activity and selectivity of the catalyst is tuned by a careful control of the amount of acid added during the immobilization of PW4. Selectivity, conversion, and turnover frequencies achieved in epoxidations over PW4/CNTs catalysts are close to those reported in the literature for homogeneous systems based on PW4. IR spectroscopy confirmed the retention of the Venturello structure after use in the catalytic reactions. The elaborated catalysts are stable to metal leaching, show a truly heterogeneous nature of the catalysis, can be easily recovered by filtration, regenerated by washing and evacuation, and then reused several times without loss of the catalytic performance.
Regular data taking with the CMD-3 at the electron-positron collider VEPP-2000 is under way since 2010.

The collected data sample corresponds to about 200 inverse picobarns of integrated luminosity per detector in the energy range from 0.32 up to 2 GeV, with a goal to collect about 1 fb −1 during next five years.

Some of the recent results from the CMD-3 detector are discussed.
We report inclusive and exclusive measurements for ${\ensuremath{\chi}}_{c1}$ and ${\ensuremath{\chi}}_{c2}$ production in $B$ decays. We measure $\mathcal{B}(B\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c1}X)=(3.03\ifmmode\pm\else\textpm\fi{}0.05(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.24(\mathrm{syst}))\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$ and $\mathcal{B}(B\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c2}X)=(0.70\ifmmode\pm\else\textpm\fi{}0.06(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}\phantom{\rule{0ex}{0ex}}0.10(\mathrm{syst}))\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$. For the first time, ${\ensuremath{\chi}}_{c2}$ production in exclusive $B$ decays in the modes ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c2}{\ensuremath{\pi}}^{\ensuremath{-}}{K}^{+}$ and ${B}^{+}\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c2}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{K}^{+}$ has been observed, along with first evidence for the ${B}^{+}\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c2}{\ensuremath{\pi}}^{+}{K}_{S}^{0}$ decay mode. For ${\ensuremath{\chi}}_{c1}$ production, we report the first observation in the ${B}^{+}\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c1}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{K}^{+}$, ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c1}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{K}_{S}^{0}$ and ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c1}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{\ensuremath{-}}{K}^{+}$ decay modes. Using these decay modes, we observe a difference in the production mechanism of ${\ensuremath{\chi}}_{c2}$ in comparison to ${\ensuremath{\chi}}_{c1}$ in $B$ decays. In addition, we report searches for $X(3872)$ and ${\ensuremath{\chi}}_{c1}(2P)$ in the ${B}^{+}\ensuremath{\rightarrow}({\ensuremath{\chi}}_{c1}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}){K}^{+}$ decay mode. The reported results use $772\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ events collected at the $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider.
It is shown that the unusual thermodynamic properties of matter within the region of two-phase coexistence in hybrid stars result in a change of the standard condition for beginning of convection.

We discuss favourable circumstances leading to such an effect of 'inverse convection'

the thermal flux transported by convection may be directed towards the stellar centre and its possible influence on the thermal evolution of hybrid stars.
Multi‐method thermochronology along the Vakhsh‐Surkhob fault zone reveals the thermotectonic history of the South Tian Shan–Pamirs boundary.

Apatite U/Pb analyses yield a consistent age of 251 ± 2 Ma, corresponding to cooling below ~550–350°C. Zircon (U–Th–Sm)/He ages constrain cooling below ~180°C to the end of the Triassic (~200 Ma). Apatite fission track thermochronology reveals two low‐temperature (<120°C) thermal events at ~25 Ma and ~10 Ma. The late Miocene cooling is confirmed by apatite (U–Th–Sm)/He data.

Cooling related to the final closure of the Palaeo‐Asian Ocean and contemporaneous magmatism in the South Tian Shan. Cooling likely related either to deformation induced by the Qiangtang collision or to the closure of the Rushan Ocean. Thermal events may be correlated with tectonic activity at the distant southern Eurasian margin. The late Miocene cooling marks the onset of mountain building within the South Tian Shan that is ongoing today.
Процесс формирования геральдического наследия этого крупного феодального клана начался сравнительно рано -в конце XII в., и, как и у многих других представителей военного сословия, на протяжении нескольких веков иконография гербов была подвержена постоянным изменениям и относительную стабильность приобрела лишь к середине XIX в.

В работе рассмотрена трансформация визуального облика гербов рода Датэ на примере письменных и материальных источников. В ходе изучения геральдического наследия этого рода проявился естественный дисбаланс в количестве и качестве исторических источников при изучении более ранних и более поздних геральдических изображений. Нижняя граница хронологических рамок исследования определяется концом XVI -началом XVII в., а верхняя граница -серединой XIX в., поскольку именно этим периодом датируется основной массив известных на данный момент материальных носителей геральдических изображений.

Анализ геральдической истории рода Датэ поставил