Hengzongshu/ArticleAgent huggingface dataset:
The development of the hydrocarbon potential of the Arctic shelf is one of the priority tasks for Russia, forming the conditions for its strategic presence in the region. Russia's official energy documents stipulate the need to increase oil and gas production in the Arctic, including offshore production, to ensure the stable operation of the country's oil and gas complex in the long term. However, the development of hydrocarbon fields on the Arctic shelf is a serious technological challenge for the domestic oil and gas industry. While offshore oil production in the Russian Arctic is already underway, natural gas production remains a promising future target.

The article analyses the current gas projects on the Arctic shelf in terms of their technological complexity and unique solutions, and the strategies of operators to attract foreign participants to the project. We consider these in the contexts of technological issues, organizational features, securing foreign investment.

The author believes that the provisions and conclusions of this study will help add to the comprehensive picture of the foreign oil and gas companies experience engaged in natural gas production on the Arctic shelf, which will minimise the errors and risks in the development of hydrocarbon resources on the Russian Arctic seas shelf.
An exact generalization of the Ramsey transition probability is derived to improve ultra-high precision measurement and quantum state engineering when a particle is subjected to independently-tailored separated oscillating fields. The phase-shift accumulated at the end of the interrogation scheme offering high-level control of quantum states throughout various laser parameters conditions. The Generalized Hyper-Ramsey Resonance based on independent manipulation of interaction time, field amplitude, phase and frequency detuning is presented to increase the performance of next generation of atomic, molecular and nuclear clocks, to upgrade high resolution frequency measurement in Penning trap mass spectrometry and for a better control of light induced frequency shifts in matter wave interferometers or quantum information processing.
We have made a precise measurement of the absolute branching fractions of Bs->Ds(*)+ Ds(*)- decays using 121.4 fb-1 of data recorded by the Belle experiment running on the Upsilon(5S) resonance. The results are B(Bs0->Ds+ Ds-) = (0.58 +0.11 -0.09 +-0.13)%, B(Bs0->Ds*+- Ds-+) = (1.8 +-0.2 +-0.4)%, and B(Bs0->Ds*+ Ds*-) = (2.0 +-0.3 +-0.5)%; the sum is B(Bs0->Ds(*)+ Ds(*)- = (4.3 +-0.4 +-1.0)%. Assuming Bs->Ds(*)+ Ds(*)- saturates decays to CP-even final states, the branching fraction constrains the ratio Delta(Gamma_s)/cos(phi_s), where Delta(Gamma_s) is the difference in widths between the two Bs0-Bs0bar mass eigenstates, and phi_s is the CP-violating phase in Bs0-Bs0bar mixing. For phi_s=0 we obtain Delta(Gamma_s)/Gamma_s = 0.090 +-0.009 (stat.) +-0.023 (syst.), where Gamma_s is the mean decay width. We also measure for the first time the longitudinal polarization fraction of Bs->Ds*+ Ds*-; the result is 0.12 +0.30 -0.28 +0.04 -0.05.
The materials studied belong to the Siberian population of the Early Bronze Age. We compared the demographic data of the Berezovy Ostrov-1 micropopulation with the distribution of sex and age in the Sopka-2/3 and Sopka-2/3A groups, which attribute to the Ust’-Tartas culture. Our comparison with the Neolithic and Odinovo groups of the Baraba forest-steppe indicates that the diet in the Berezovy Ostrov-1 group was similar to that in the Neolithic series from Vengerovo-2A.

We studied the demographic situation, dental and postcranial pathologies. We also analyzed the burial rites and inventory in terms of the sex and age of the buried. We estimated the safety of the anthropological materials related to the Early Bronze Age community from the burial ground Berezovy Ostrov-1, analyzed the sex and age composition and pathological status of the buried.

We found some similarities of the demographic structure of the population studied and the Ust’-Tartas groups. Stone tools, arrowheads and ornaments as objects of the same nature are typical for women, as well as for men and children. We observe no burials of cremated women, newborns and children under 2 years old. The basic diet of the population included meat and wild plants. There existed a special burial rite for newborns and children under the age of one year.
In crosses of wild and cultivated peas (Pisum sativum L.), nuclear-cytoplasmic incompatibility frequently occurs manifested as decreased pollen fertility, male gametophyte lethality, sporophyte lethality.

High-throughput sequencing of plastid genomes of one cultivated and four wild pea accessions differing in cross-compatibility was performed. Candidate genes for involvement in the nuclear-plastid conflict were searched in the reconstructed plastid genomes. In the annotated Medicago truncatula genome, nuclear candidate genes were searched in the portion syntenic to the pea chromosome region known to harbor a locus involved in the conflict.

In the plastid genomes, a substantial variability of the accD locus represented by nucleotide substitutions and indels was found to correspond to the pattern of cross-compatibility among the accessions analyzed. Amino acid substitutions in the polypeptides encoded by the alleles of a nuclear locus, designated as Bccp3, with a complementary function to accD, fitted the compatibility pattern. The accD locus in the plastid genome encoding beta subunit of the carboxyltransferase of acetyl-coA carboxylase and the nuclear locus Bccp3 encoding biotin carboxyl carrier protein of the same multi-subunit enzyme were nominated as candidate genes for main contribution to nuclear-cytoplasmic incompatibility in peas. Existence of another nuclear locus involved in the accD-mediated conflict is hypothesized.
The inclusive photoproduction of two heavy quarks, separated by a large rapidity interval, is proposed as a new channel for the manifestation of the Balitsky-Fadin-Kuraev-Lipatov (BFKL) dynamics.

The extension to the hadroproduction case is also discussed.
Different synthetic approaches to fluorescent 3,4-dihydro-2H-pyrrole 1-oxide aldonitrones that are of potential interest as spin traps are discussed.
Validation issues of models of vibration-dissociation coupling used in Navier–Stokes and Direct Simulation Monte Carlo (DSMC) computations are discussed with respect to high-speed non-equilibrium flows with a separation region under conditions implemented in the ground facilities.

Two test cases are considered: low-enthalpy N2 flow around a double cone and high-enthalpy N2/N flow around a double wedge. The results of our numerical simulations are compared to experimental measurements and numerical results of other authors.

Good agreement between numerical and experimental data is obtained for the low-enthalpy case, while only qualitative agreement is achieved for the high-enthalpy case. The discrepancy between the DSMC and Navier–Stokes results are also discussed.
The renal function plays a leading role in long-term control of arterial pressure. The comparative analysis of renal cortex transcriptome in ISIAH rats with inherited stress-induced arterial hypertension and normotensive WAG rats was performed using RNA-Seq approach. The goal of the study was to identify the differentially expressed genes (DEGs) related to hypertension and to detect the pathways contributing to the differences in renal functions in ISIAH and WAG rats.The analysis revealed 716 genes differentially expressed in renal cortex of ISIAH and WAG rats, 42 of them were associated with arterial hypertension and regulation of blood pressure (BP). Several Gene Ontology (GO) terms significantly enriched with DEGs suggested the existence of the hormone dependent interstrain differences in renal cortex function. Multiple DEGs were associated with regulation of blood pressure and blood circulation, with the response to stress (including oxidative stress, hypoxia, and fluid shear stress) and its regulation. Several other processes which may contribute to hypertension development in ISIAH rats were: ion transport, regulation of calcium ion transport, homeostatic process, tissue remodeling, immune system process and regulation of immune response. KEGG analysis marked out several pathways significantly enriched with DEGs related to immune system function, to steroid hormone biosynthesis, tryptophan, glutathione, nitrogen, and drug metabolism.The results of the study provide a basis for identification of potential biomarkers of stress-sensitive hypertension and for further investigation of the mechanisms that affect renal cortex function and hypertension development.
Parvoviruses such as parvovirus H-1 (H-1PV) may selectively infect and lysis cancer cells. The parvoviruses also induce an immune system to eliminate the tumor cells through the formation of anti-cancer immunity. One of the possible mechanisms of antitumor activity is associated with the direct induction of apoptosis by parvoviral proteins NS1 and 11 kDa.

Parvovirus-based vectors are promising for gene therapy of oncological diseases and genetic disorders in humans. Parvoviruses were successfully used for the experimental treatment on animal models of human glioma, neuroblastomas, lymphomas, pancreatic carcinoma, carcinomas and breast tumors.

ParvOryx is the first oncolytic preparation constructed on the base of H-1PV; its phase I/IIa clinical trials in patients with glioblastoma multiforme are in process.
This paper is devoted to experimental investigation of formation of precessing vortices pair in a vortex chamber with a cylindrical working area. Flow structure was registered by means of a high-speed visualization technique. Quantitative measurements characterizing the vortex properties were carried out using a 2D particle image velocimetry (PIV) technique synchronized with wall pressure measurements. The results show that two symmetrical precessing helical vortices are present downstream of the tangential nozzles.The phase- averaged analysis confirms the presence of large-scale twin vortex structure that visualized by small air bubbles dissolved in water.
Formation of coherent structures and patterns from unstable uniform state or noise is a fundamental physical phenomenon that occurs in various areas of science ranging from biology to astrophysics. Understanding of the underlying mechanisms of such processes can both improve our general interdisciplinary knowledge about complex nonlinear systems and lead to new practical engineering techniques. Modern optics with its high precision measurements offers excellent test-beds for studying complex nonlinear dynamics, though capturing transient rapid formation of optical solitons is technically challenging.

Here we unveil the build-up of dissipative soliton in mode-locked fibre lasers using dispersive Fourier transform to measure spectral dynamics and employing autocorrelation analysis to investigate temporal evolution.

Numerical simulations corroborate experimental observations, and indicate an underlying universality in the pulse formation. Statistical analysis identifies correlations and dependencies during the build-up phase. Our study may open up possibilities for real-time observation of various nonlinear structures in photonic systems.
Reactions of [VCl3(thf)3] or VBr3 with 2,2′-bipyridine (bpy) or 1,10-phenanthroline (phen) in a 1:1 molar ratio in air under solventothermal conditions has afforded polymeric oxidovanadium(IV) four complexes 1–4 of a general formula [VO(L)X2]n (L = bpy, phen and X = Cl, Br). Monomeric complex [VO(DMF)(phen)Br2] (4a) has been obtained by the treatment of compound 4 with DMF. The complexes were characterized by IR spectroscopy and elemental analysis. The crystal structures of 3 and 4a were determined by an X-ray diffraction (XRD) analysis. The {VOBr2(bpy)} fragments in 3 form infinite chains due to the V = O…V interactions. The vanadium atom has a distorted octahedral coordination environment. Complexes 1–4 have been tested as catalysts in the homogeneous oxidation of alkanes (to produce corresponding alkyl hydroperoxides which can be easily reduced to alcohols by PPh3) and alcohols (to corresponding ketones) with H2O2 or tert-butyl hydroperoxide in MeCN. Compound 1 exhibited the highest activity. The mechanism of alkane oxidation was established using experimental selectivity and kinetic data and theoretical DFT calculations. The mechanism is of the Fenton type involving the generation of HO• radicals.
We calculate electron and nuclear spin relaxation rates in a quantum dot due to the combined action of Nyquist noise and electron-nuclei hyperfine or spin-orbit interactions. The relaxation rate is linear in the resistance of the gate circuit and, in the case of spin-orbit interaction, it depends essentially on the orientations of both the static magnetic field and the fluctuating electric field, as well as on the ratio between Rashba and Dresselhaus interaction constants. We provide numerical estimates of the relaxation rate for typical system parameters, compare our results with other, previously discussed mechanisms, and show that the Nyquist mechanism can have an appreciable effect for experimentally relevant systems.
Nonlinear Fourier transform (NFT) (also known in the mathematical and nonlinear science community as the inverse scattering transform [1] ) has recently attracted a great deal of attention in the context of optical transmission in fiber channels [2] , that can be approximated by the nonlinear Schrodinger equation.

Within the NFT-based transmission approach, we modulate the parameters of the nonlinear spectrum (NS) and generate the respective information signal in time domain using inverse NFT. Both discrete and continuous parts of NS can be used, here we focus on the continuous spectrum only. Then, the signal is launched into the fiber, and at the receiver we apply direct NFT to the received signal's to retrieve the information encoded in NS. In this work we demonstrate that the high-accuracy computation of the continuous NS can be performed by using artificial neural networks (NN). The NS of a given localized signal q ( t ) containing no solitonic (discrete) components is represented by the continuous complex-valued function r ( ξ ) (the reflection coefficient) of the real spectral parameter ξ , where the latter plays the role of nonlinear frequency. The signals in our work have been specifically pre-selected to ensure that they contain no discrete spectrum. In the time domain, considered (normalized) symbol is given as the sum of independent sub-carriers [3] : $q(t) = \frac{1}{Q}\sum\nolimits_{k = 1}^M {{C_k}} {e^{i{\omega _k}t}}f(t)$ where M is a number of frequency channels, ω k is a carrier frequency of the k -th channel, C k corresponds to the digital data in k -th channel, and T defines the symbol interval; f ( t ) is the return-to-zero carrier support waveform. To assess the quality of NN prediction, we use the following formula for the relative error: $\eta (\xi ) = \frac{{\left\langle {\left| {{r_{predicted{\text{ }}}}(\xi ) - {r_{actual{\text{ }}}}(\xi )} \right|} \right\rangle }}{{\left\langle {\left| {{r_{actual{\text{ }}}}(\xi )} \right|} \right\rangle }}$ , where 〈•〉 denotes the mean over the spectral interval, the "predicted" and "actual" indices refer to the NN-predicted and precomputed values of the reflection coefficient r ( ξ ), respectively.

In this work we demonstrate that the high-accuracy computation of the continuous NS can be performed by using artificial neural networks (NN).
Despite the economic importance of creating cold resilient cattle breeds, our knowledge of the genetic basis of adaptation to cold environments in cattle is still scarce compared to information on other economically important traits.

Herein, using whole-genome resequencing of animals showing contrasting phenotypes on temperature maintenance under acute cold stress combined with the existing SNP (single nucleotide polymorphism) functional annotations, we report chromosomal regions and candidate SNPs controlling body temperature in the Siberian cattle populations. The SNP ranking procedure based on regional FST calculations, functional annotations, and the allele frequency difference between cold-tolerant and cold-sensitive groups of animals pointed to multiple candidate genes.

Among these, GRIA4, COX17, MAATS1, UPK1B, IFNGR1, DDX23, PPT1, THBS1, CCL5, ATF1, PLA1A, PRKAG1, and NR1I2 were previously related to thermal adaptations in cattle. Other genes, for example KMT2D and SNRPA1, are known to be related to thermogenesis in mice and cold adaptation in common carp, respectively. This work could be useful for cattle breeding strategies in countries with harsh climates, including the Russian Federation.
The article discusses the main trends in the development of modern gas processing, analyzes the dynamics and regional structure of gas processing in Russia.

The authors formulated the urgent problems of gas processing and identified the main promising directions for the development of the gas processing industry in Russia.

A significant barrier is the lack of new technological solutions for the processing and utilization of all components produced with gas in the North of Western Siberia. Priority directions for the development of gas processing are associated with the construction of new gas processing and gas chemical facilities required for the qualified and efficient use of associated gas components.
We present a measurement of the branching fraction and the longitudinal polarization fraction of $B^{0}\rightarrow\rho^+\rho^-$ decays, as well as the time-dependent $CP$ violating parameters in decays into longitudinally polarized $\rho^{+}\rho^{-}$ pairs with Belle's final data set of $772\times 10^6$ $B\bar{B}$ pairs, at the $\Upsilon(4S)$ resonance, collected at the asymmetric-energy $e^+ e^-$ collider KEKB.

We perform an isospin analysis to constrain the CKM angle $\phi_2$

We obtain ${\cal B}(B^0 \rightarrow \rho^+ \rho^-)=(28.3\pm 1.5\;(\rm stat) \pm 1.5\;(\rm syst))\times 10^{-6}$, $f_L = 0.988\pm 0.012\;(\rm stat ) \pm0.023\;(\rm syst)$, ${\cal A}_{CP} = 0.00\pm0.10\;(\rm stat ) \pm0.06\;(\rm syst)$, ${\cal S}_{CP} = -0.13\pm0.15\;(\rm stat ) \pm0.05\;(\rm syst).$ and obtain two solutions with \begin{eqnarray} \phi_{2} = (93.7\pm10.6)^{\circ},\nonumber \end{eqnarray} being most compatible with other Standard-Model based fits to the data.
Charge asymmetry in processes e+ e- --> mu+ mu- gamma and e+ e- --> pi+ pi- gamma is measured using 232 fb-1 of data collected with the BABAR detector at center-of-mass energies near 10.58 GeV.

An observable is introduced and shown to be very robust against detector asymmetries while keeping a large sensitivity to the physical charge asymmetry that results from the interference between initial and final state radiation. The asymmetry is determined as a function of the invariant mass of the final-state tracks from production threshold to a few GeV/c2.

It is compared to the expectation from QED for e+ e- --> mu+ mu- gamma and from theoretical models for e+ e- --> pi+ pi- gamma. A clear interference pattern is observed in e+ e- --> pi+ pi- gamma, particularly in the vicinity of the f_2(1270) resonance. The inferred rate of lowest order FSR production is consistent with the QED expectation for e+ e- --> mu+ mu- gamma, and is negligibly small for e+ e- --> pi+ pi- gamma.
The paper presents new experimental results on the simulation of supersonic underexpanded micro-jets by macro-jet in the range of moderate Reynolds numbers of air outflow from the nozzle.

A correlation is shown between the variations in the Pitot pressure in the model micro-jet with variations in the length of the supersonic core of real the micro-jets.

The results of experiments on the effect of humidity on the pulsation of mass flow rate in a micro-jet are presented.
Chromosomal imprinting requires an epigenetic system that 'imprints' one of the two parental chromosomes such that it results in a heritable (cell-to-cell) change in behavior of the 'imprinted' chromosome. Imprinting takes place when the parental genomes are separate, which occurs during gamete formation in the respective germ-lines and post-fertilization during the period when the parental pro-nuclei lie separately within the ooplasm of the zygote. In the mouse, chromosomal imprinting is regulated by germ-line specific DNA methylation.

But the methylation machinery in the respective germ-lines does not discriminate between imprinted and non-imprinted regions. As a consequence, the mouse oocyte nucleus contains over a thousand oocyte-specific germ-line differentially methylated regions (gDMRs). Upon fertilization, the sperm provides a few hundred sperm-specific gDMRs of its own. Combined, there are around 1600 imprinted and non-imprinted gDMRs in the pro-nuclei of the newly fertilized zygote. It is a remarkable fact that beginning in the maternal ooplasm, there are mechanisms that manage to preserve DNA methylation at ~ 26 known imprinted gDMRs in the face of the ongoing genome-wide DNA de-methylation that characterizes pre-implantation development. Specificity is achieved through the binding of KRAB-zinc finger proteins to their cognate recognition sequences within the gDMRs of imprinted genes. This in turn nucleates the assembly of localized heterochromatin-like complexes that preserve methylation at imprinted gDMRs through recruitment of the maintenance methyl transferase Dnmt1.

These studies have shown that a germ-line imprint may cause parent-of-origin-specific behavior only if 'licensed' by mechanisms that operate post-fertilization. Study of the germ-line and post-fertilization contributions to the imprinting of chromosomes in classical insect systems (Coccidae and Sciaridae) show that the ooplasm is the likely site where imprinting takes place. By comparing molecular and genetic studies across these three species, we suggest that mechanisms which operate post-fertilization play a key role in chromosomal imprinting phenomena in animals and conserved components of heterochromatin are shared by these mechanisms.
The article introduces and interprets a new runic inscription found at the Kalbak-Tash II petroglyphic site in Central Altai. Whereas the adjacent petroglyphic site, Kalbak-Tash I, is the largest collection of Old Turkic runic texts in the Altai Republic and in Russia at large, Kalbak-Tash II has so far yielded only one such inscription, consisting of seven characters. Professor Marcel Erdal has suggested its transliteration, translation, and commentary. The proposed translation reads, “The Horse tribe. Hunters of the Az (tribe), open (the way)!” The inscription, evidently dating to the 8th century, marks boundaries of tribal grazing areas or those of small social units, in this case, the Az tribe, mentioned in runic texts from Mongolia and Tuva. Various viewpoints regarding their location, affi nities with neighboring tribes, origin, and later history are discussed. This new inscription confi rms the common idea that the so-called mountain or mountain-taiga Az people lived not only in western Tuva, but also in eastern and southern Altai, whereas the steppe Az lived alongside the Kyrgyz in the Khakass-Minusinsk Basin. The culture possibly associated with the Az is the Kudyrge culture in Altai. The Kalbak-Tash II inscription, short as it is, is a signifi cant addition to the well-known Orkhon runic texts addressing the history of the Turkic Kaganates.