cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mutations in a gene encoding a new Hsp70 suppress rapid DNA inversion and bgl activation, but not proU derepression, in hns-1 mutant Escherichia coli.
Creators: name: Lelivelt, M J
name: Kawula, T H
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1994

description: Mutations in hns, the gene encoding the nucleoid-associated protein H-NS, affect both the expression of many specific unlinked genes and the inversion rate of the DNA segment containing the pilA promoter in Escherichia coli. A second-site mutation, termed hscA1, compensated for the effect of an hns-1 mutant allele on the pilA promoter inversion rate and on activation of the bgl operon. The proU operon, induced in an hns-1 background, remained derepressed in an hns-1 hscA1 strain and was induced at an intermediate level in an hns hscA1 strain. An insertion mutant allele, hscA2-cat, conferred the same partial hns-1 compensatory phenotype as the hscA1 allele. The hscA gene encoded a 66-kDa protein product that is a member of the Hsp70 protein class. The gene encoding this product is part of a bicistronic operon that is preceded by a possible sigma 32 promoter and also encodes a 21-kDa protein with significant homology to the DnaJ protein family. The mutation defining the hscA1 allele resulted in a phenylalanine substituting a conserved serine residue located in the ATP-binding region of other Hsp70 proteins.
Центральноазиатское направление транспортной стратегии Китая
Creators: name: Сазонов Сергей Леонидович
Publisher: name: Китай в мировой и региональной политике. История и современность
Year: 2017
Subjects: ЦЕНТРАЛЬНАЯ АЗИЯ
КИТАЙ
ЭКОНОМИЧЕСКИЙ ПОЯС ШЕЛКОВОГО ПУТИ (ЭПШП)
ТРАНСПОРТНАЯ СТРАТЕГИЯ
МЕЖДУНАРОДНЫЙ ТРАНЗИТНЫЙ КОРИДОР
ЛОГИСТИЧЕСКАЯ ЦЕПОЧКА
ПЕРЕВОЗКА ГРУЗОВ
ТРАНЗИТНЫЙ ПОТЕНЦИАЛ
ТРАНСПОРТНАЯ ИНФРАСТРУКТУРА

description: В статье констатируется, что проект создания Экономического пояса Шелкового пути (ЭПШП) был разработан руководством Китая в качестве долгосрочной стратегии сопряжения транспортных сетей Китая и стран Центральной Азии с перспективой их последующей трансформации в евразийский транзитный транспортный коридор. Автор полагает, что наиболее тесное взаимодействие в русле реализации этой стратегии осуществляется между Китаем и Казахстаном, когда транзитные потоки из стран АТР, формируемые в КНР, передаются Казахстану для дальнейшей маршрутизации в страны Центральной Азии и Европы. В доказательство этого положения в статье приводится анализ логистических систем, форм и методов трансграничной передачи транзитных экспортных грузов в китайско-казахстанском транспортном коридоре.
Circular polarization in the optical afterglow of GRB 121024A
Creators: name: Wiersema, K.
name: Covino, S.
name: Toma, K.
name: van der Horst, A. J.
name: Varela, K.
name: Min, M.
name: Greiner, J.
name: Starling, R. L. C.
name: Tanvir, N. R.
name: Wijers, R. A. M. J.
name: Campana, S.
name: Curran, P. A.
name: Fan, Y.
name: Fynbo, J. P. U.
name: Gorosabel, J.
name: Gomboc, A.
name: Gotz, D.
name: Hjorth, J.
name: Jin, Z. P.
name: Kobayashi, S.
name: Kouveliotou, C.
name: Mundell, C.
name: O'Brien, P. T.
name: Pian, E.
name: Rowlinson, A.
name: Russell, D. M.
name: Salvaterra, R.
name: Alighieri, S. di Serego
name: Tagliaferri, G.
name: Vergani, S. D.
name: Elliott, J.
name: Farina, C.
name: Hartoog, O. E.
name: Karjalainen, R.
name: Klose, S.
name: Knust, F.
name: Levan, A. J.
name: Schady, P.
name: Sudilovski, V.
name: Willingale, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Gamma-ray bursts (GRBs) are most probably powered by collimated relativistic outflows (jets) from accreting black holes at cosmological distances. Bright afterglows are produced when the outflow collides with the ambient medium. Afterglow polarization directly probes the magnetic properties of the jet, when measured minutes after the burst, and the geometric properties of the jet and the ambient medium when measured hours to days after the burst. High values of optical polarization detected minutes after burst in GRB 120308A indicate the presence of large-scale ordered magnetic fields originating from the central engine (the power source of the GRB). Theoretical models predict low degrees of linear polarization and negligable circular polarization at late times, when the energy in the original ejecta is quickly transferred to the ambient medium and propagates farther into the medium as a blastwave. Here we report the detection of circularly polarized optical light in the afterglow of GRB 121024A, measured 0.15 days after the burst. We show that the circular polarization is intrinsic to the afterglow and unlikely to be produced by dust scattering or plasma propagation effects. A possible explanation is to invoke anisotropic (rather than the commonly assumed isotropic) electron pitch angle distributions, and we suggest that new models are required to produce the complex microphysics of realistic shocks in relativistic jets.
description: Published as Wiersema et al. 2014, Nature 509, 201-204. This is the version prior to final editing; please see official published version for the final version and higher quality images
Cloning, sequencing, and characterization of the gene encoding FrpB, a major iron-regulated, outer membrane protein of Neisseria gonorrhoeae.
Creators: name: Sparling, P F
name: Beucher, M
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: FrpB (for Fe-regulated protein B) is a 76-kDa outer membrane protein that is part of the iron regulon of Neisseria gonorrhoeae and Neisseria meningitidis. The frpB gene from gonococcal strain FA19 was cloned and sequenced. FrpB was homologous to several TonB-dependent outer membrane receptors of Escherichia coli as well as HemR of Yersinia enterocolitica and CopB of Moraxella catarrhalis. An omga insertion into the frpB coding sequence caused a 60% reduction in 55Fe uptake from heme, but careful analysis suggested that this effect was nonspecific. While FrpB was related to the family of TonB-dependent proteins, a function in iron uptake could not be documented.
Direct multi-modal inversion of geophysical logs using deep learning
Creators: name: Alyaev, Sergey
name: Elsheikh, Ahmed H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Geophysics (physics.geo-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Geosteering of wells requires fast interpretation of geophysical logs, which is a non-unique inverse problem. Current work presents a proof-of-concept approach to multi-modal probabilistic inversion of logs using a single evaluation of an artificial deep neural network (DNN). A mixture density DNN (MDN) is trained using the "multiple-trajectory-prediction" (MTP) loss functions, which avoids mode collapse typical for traditional MDNs, and allows multi-modal prediction ahead of data. The proposed approach is verified on the real-time stratigraphic inversion of gamma-ray logs. The multi-modal predictor outputs several likely inverse solutions/predictions, providing more accurate and realistic solutions than a deterministic regression using a DNN. For these likely stratigraphic curves, the model simultaneously predicts their probabilities, which are implicitly learned from the training geological data. The stratigraphy predictions and their probabilities obtained in milliseconds from the MDN can enable better real-time decisions under geological uncertainties.
description: Submitted to Earth and Space Science
Collective Operations Can Exponentially Enhance Quantum State Verification
Creators: name: Miguel-Ramiro, Jorge
name: Riera-Sàbat, Ferran
name: Dür, Wolfgang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Maximally entangled states are a key resource in many quantum communication and computation tasks, and their certification is a crucial element to guarantee the desired functionality. We introduce collective strategies for the efficient, local verification of ensembles of Bell pairs that make use of an initial information and noise transfer to few copies prior to their measurement. In this way the number of entangled pairs that need to be measured and hence destroyed is significantly reduced as compared to previous, even optimal, approaches that operate on individual copies. Moreover the remaining states are directly certified. We show that our tools can be extended to other problems and larger classes of multipartite states.
description: 5 pages, 2 figures
Accurate Qubit Control with Single Flux Quantum Pulses
Creators: name: McDermott, R.
name: Vavilov, M. G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We describe the coherent manipulation of harmonic oscillator and qubit modes using resonant trains of single flux quantum pulses in place of microwaves. We show that coherent rotations are obtained for pulse-to-pulse spacing equal to the period of the oscillator. We consider a protocol for preparing bright and dark harmonic oscillator pointer states. Next we analyze rotations of a two-state qubit system. We calculate gate errors due to timing jitter of the single flux quantum pulses and due to weak anharmonicity of the qubit. We show that gate fidelities in excess of 99.9% are achievable for sequence lengths of order 20 ns.
description: 10 pages, 7 figures
Resilience factors scoping review
Creators: name: Jefferies, Philip
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Public Health
subject: Rehabilitation and Therapy
subject: Social Work
subject: FOS: Sociology
subject: Mental and Social Health
subject: Psychiatry and Psychology
subject: Medicine and Health Sciences
subject: Psychology
subject: FOS: Psychology
subject: Social and Behavioral Sciences
subject: resilience; mental health; recovery; intervention

description: Scoping review of resilience interventions (PRISM-ScR compliant)
DNA helicases in recombination and repair: construction of a delta uvrD delta helD delta recQ mutant deficient in recombination and repair.
Creators: name: Matson, S W
name: Mendonca, V M
name: Klepin, H D
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: DNA helicases play pivotal roles in homologous recombination and recombinational DNA repair. They are involved in both the generation of recombinogenic single-stranded DNA ends and branch migration of synapsed Holliday junctions. Escherichia coli helicases II (uvrD), IV (helD), and RecQ (recQ) have all been implicated in the presynaptic stage of recombination in the RecF pathway. To probe for functional redundancy among these helicases, mutant strains containing single, double, and triple deletions in the helD, uvrD, and recQ genes were constructed and examined for conjugational recombination efficiency and DNA repair proficiency. We were unable to construct a strain harboring a delta recQ delta uvrD double deletion in a recBC sbcB(C) background (RecF pathway), suggesting that a delta recQ deletion mutation was lethal to the cell in a recBC sbcB(C) delta D background. However, we were able to construct a triple delta recQ delta uvrD Delta helD mutant in the recBC sbcB(C) background. This may be due to the increased mutator frequency in delta uvrD mutants which may have resulted in the fortuitous accumulation of a suppressor mutation(s). The triple helicase mutant recBC sbcB(C) delta uvrD delta recQ delta helD severely deficient in Hfr-mediated conjugational recombination and in the repair of methylmethane sulfonate-induced DNA damage. This suggests that the presence of at least one helicase--helicase II, RecQ helicase, or helicase IV--is essential for homologous recombination and recombinational DNA repair in a recBC sbcB(C) background. The triple helicase mutant was recombination and repair proficient in a rec+ background. Genetic analysis of the various double mutants unmasked additional functional redundancies with regard to conjugational recombination and DNA repair, suggesting that mechanisms of recombination depend both on the DNA substrates and on the genotype of the cell.
Direct $CP$ violation of three bodies decay process from the resonance effect
Creators: name: Lü, Gang
name: Zhao, Yan-Lin
name: Liu, Liang-Chen
name: Guo, Xin-Heng
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The physical state of $ρ$-$ω$-$ϕ$ mesons can be mixed by the unitary matrix. The decay processes of $ω\rightarrow π^{+}π^{-}$ and $ϕ\rightarrow π^{+}π^{-}$ are from the isospin symmetry breaking. The $ρ-ω$, $ρ-ϕ$ and $ω-ϕ$ interferences lead to resonance contribution to produce the strong phases. The $CP$ asymmetry is considered from above isospin symmetry breaking due to the new strong phase for the first order. It has been found the $CP$ asymmetry can be enhanced greatly for the decay process of $B^{0}\rightarrowπ^+π^{-}η^{(')}$ when the invariant masses of the $π^+π^{-}$ pairs are in the area around the $ω$ resonance range and the $ϕ$ resonance range in perturbative QCD. We also discuss the possibility to search the predicted $CP$ violation at the LHC.
Китайско-пакистанский экономический коридор - первый этап реализации
Creators: name: Замараева Наталья Алексеевна
Publisher: name: Китай в мировой и региональной политике. История и современность
Year: 2017
Subjects: КИТАЙСКО-ПАКИСТАНСКИЙ ЭКОНОМИЧЕСКИЙ КОРИДОР (КПЭК)
ТРАНСПОРТНАЯ ИНФРАСТРУКТУРА
БЕЛУДЖИСТАН
ФЕДЕРАЛЬНАЯ АРМИЯ ПАКИСТАНА
ПОРТ ГВАДАР

description: В статье рассматривается комплекс мероприятий первого этапа реализации Китайско-пакистанского экономического коридора, основные маршруты, пролегающие по территории провинции Белуджистан; особенности тестового торгового каравана от китайского Кашгара до пакистанского порта Гвадар; вызовы и перспективы китайской инициативы «Один пояс, один путь» на примере участка КПЭК.
Genes required for cellulose synthesis in Agrobacterium tumefaciens.
Creators: name: White, S
name: Matthysse, A G
name: Lightfoot, R
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: A region of the chromosome of Agrobacterium tumefaciens 11 kb long containing two operons required for cellulose synthesis and a part of a gene homologous to the fixR gene of Bradyrhizobium japonicum has been sequenced. One of the cellulose synthesis operons contained a gene (celA) homologous to the cellulose synthase (bscA) gene of Acetobacter xylinum. The same operon also contained a gene (celC) homologous to endoglucanase genes from A. xylinum, Cellulomonas uda, and Erwinia chrysanthemi. The middle gene of this operon (celB) and both the genes of the other operon required for cellulose synthesis (celDE) showed no significant homology to genes contained in the databases. Transposon insertions showed that at least the last gene of each of these operons (celC and celE) was required for cellulose synthesis in A. tumefaciens.
A polyconvex transversely-isotropic invariant-based formulation for electro-mechanics: stability, minimisers and computational implementation
Creators: name: Horák, M.
name: Gil, A. J.
name: Ortigosa, R.
name: Kružík, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The fabrication of evermore sophisticated miniaturised soft robotic components made up of Electro-Active Polymers (EAPs) is constantly demanding parallel development from the in-silico simulation point of view. The incorporation of crystallographic anisotropic micro-architectures, within an otherwise nearly uniform isotropic soft polymer matrix, has shown great potential in terms of advanced three-dimensional actuation (i.e. stretching, bending, twisting), especially at large strains, that is, beyond the onset of geometrical pull-in instabilities. To accommodate for this in-silico response, this paper presents a phenomenological invariant-based polyconvex transversely isotropic framework for the simulation of EAPs at large strains. This research expands previous work developed by Gil and Ortigosa for isotropic EAPs with the help of the pioneering work by Schröeder and Neff in the context of polyconvexity for materials endowed with crystallographic architectures in single physics mechanics. The paper also summarises key important results both in terms of the existence of minimisers and material stability. In addition, a series of numerical examples is presented in order to demonstrate the effect that the anisotropic orientation and the contrast of material properties, as well as the level of deformation and electric field, have upon the response of the EAP when subjected to large three-dimensional stretching, bending and torsion, including the possible development of wrinkling.
Genetic map of the Mycoplasma genitalium chromosome.
Creators: name: Smith, E A
name: Lucier, T
name: Peterson, S N
name: Heitzman, K
name: Bott, K F
name: Hu, P C
name: Hutchison, C A
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: At 600 kb, the genome of Mycoplasma genitalium is among the smallest known for cellular organisms capable of independent replication. As such, elucidation of the genetic makeup and chromosome architecture of this organism is of considerable interest. We have located 631 markers on the physical map of M. genitalium. The clones have been mapped by hybridizing 20 overlapping cosmid and lambda clones which encompass the entire M. genitalium chromosome to replica filters containing 856 genomic DNA clones. Three hundred fifty-six of these clones represent sequence tag sites, which were previously characterized by database searches. The remaining markers represent clones with an average size of 2.5 kb derived from Sau3A1 partial digestion of genomic DNA. The hybridization data can be divided into three classes: clones which hybridized to only one cosmid; clones which hybridized to two adjacent and overlapping cosmids; and clones which hybridized to several cosmids, which represent repetitive DNA. This rapid approach for placing clones on the physical map has allowed useful comparisons to be made with other bacterial chromosomes, especially that of the closely related organism M. pneumoniae, and has provided insight to the types of events which may have led to the reduction in size of this genome. Future use of these data is discussed.
Robust $s\pm$ Superconductivity in a Two-Band Hubbard-Fr{ö}hlich Model of Alkali Doped Organics
Creators: name: Qin, Tao
name: Fabrizio, Michele
name: Naghavi, S. Shahab
name: Tosatti, Erio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The damaging effect of strong electron-electron repulsion on regular, electron-phonon %$s$-wave superconductivity is a standard tenet. In spite of that, an increasing number of compounds such as fullerides and more recently alkali-doped aromatics exhibit %$s$-wave or presumably $s$ wave superconductivity despite very narrow bands and very strong electron repulsion. Here, we explore superconducting solutions of a model Hamiltonian inspired by the electronic structure of alkali doped aromatics. The model is a two-site, two-narrow-band metal with a single intersite phonon, leading to attraction-mediated, two-order parameter superconductivity. On top of that, the model includes a repulsive on-site Hubbard $U$, whose effect on the superconductivity we study. Starting within mean field, we find that $s \pm$ superconductivity is the best solution surviving the presence of $U$, whose effect is canceled out by the opposite signs of the two order parameters. The correlated Gutzwiller study that follows is necessary because without electron correlations the superconducting state would in this model be superseded by an antiferromagnetic insulating state with lower energy. The Gutzwiller correlations lower the energy of the metallic state, with the consequence that the $s \pm$ superconducting state is stabilized and even strengthened for small Hubbard $U$.
Fluctuation-induced dynamics of nematic topological defects
Creators: name: Bonn, Lasse
name: Ardaseva, Aleksandra
name: Mueller, Romain
name: Shendruk, Tyler N.
name: Doostmohammadi, Amin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Topological defects are increasingly being identified in various biological systems, where their characteristic flow fields and stress patterns are associated with continuous active stress generation by biological entities. Here, using numerical simulations of continuum fluctuating nematohydrodynamics we show that even in the absence of any specific form of active stresses associated with self-propulsion, mesoscopic fluctuations in either orientational alignment or hydrodynamics can independently result in flow patterns around topological defects that resemble the ones observed in active systems. Our simulations further show the possibility of extensile- and contractile-like motion of fluctuation-induced positive half-integer topological defects. Remarkably, isotropic stress fields also reproduce the experimentally measured stress patterns around topological defects in epithelia. Our findings further reveal that extensile- or contractile-like flow and stress patterns around fluctuation-induced defects are governed by passive elastic stresses and flow-aligning behavior of the nematics.
Hsc66, an Hsp70 homolog in Escherichia coli, is induced by cold shock but not by heat shock.
Creators: name: Lelivelt, M J
name: Kawula, T H
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: Hsc66 is the second identified Hsp70 protein in Escherichia coli. Mutations in hscA, the gene encoding Hsc66, compensate for some phenotypic effects of a mutation in hns, a gene encoding the cold-inducible, nucleoid-associated protein H-NS. Expression of hscA was not induced upon heat shock but was induced approximately 11-fold 3 h after a shift from 37 to 10 degrees C. Furthermore, hscA was induced upon chloramphenicol addition, which induces the synthesis of other cold-inducible genes. Mapping of the transcription initiation site showed that hscA was cotranscribed with an upstream dnaJ-like gene, hscB; thus, hscB was also cold inducible. The hscBA promoter did not contain a Y-box element found in some cold-inducible promoters. Using two-dimensional electrophoresis, we identified Hsc66 under static 37 degrees C growth conditions and showed that Hsc66 was induced, as well as hscA, 3 h after a cold shock. Growth of an hscA mutant following cold shock was monitored relative to that of an isogenic wild-type strain. While cold shock adaptation as a function of growth rate was not significantly impaired in an hscA mutant, the expression of at least five other proteins was altered in this mutant following cold shock. On the basis of the homology to Hsp70 proteins and the induction following cold shock, we speculate that Hsc66 functions as a cold shock molecular chaperone.
How Ready Is DNS for an IPv6-Only World?
Creators: name: Streibelt, Florian
name: Sattler, Patrick
name: Lichtblau, Franziska
name: Gañán, Carlos H.
name: Feldmann, Anja
name: Gasser, Oliver
name: Fiebig, Tobias
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: DNS is one of the core building blocks of the Internet. In this paper, we investigate DNS resolution in a strict IPv6-only scenario and find that a substantial fraction of zones cannot be resolved. We point out, that the presence of an AAAA resource record for a zone's nameserver does not necessarily imply that it is resolvable in an IPv6-only environment since the full DNS delegation chain must resolve via IPv6 as well. Hence, in an IPv6-only setting zones may experience an effect similar to what is commonly referred to as lame delegation. Our longitudinal study shows that the continuing centralization of the Internet has a large impact on IPv6 readiness, i.e., a small number of large DNS providers has, and still can, influence IPv6 readiness for a large number of zones. A single operator that enabled IPv6 DNS resolution -- by adding IPv6 glue records -- was responsible for around 20.3% of all zones in our dataset not resolving over IPv6 until January 2017. Even today, 10% of DNS operators are responsible for more than 97.5% of all zones that do not resolve using IPv6.
Relativistic outflow from two thermonuclear shell flashes on neutron stars
Creators: name: Zand, Jean in 't
name: Keek, Laurens
name: Cavecchi, Yuri
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the exceptionally short (32-41 ms) precursors of two intermediate-duration thermonuclear X-ray bursts observed with RXTE from the neutron stars in 4U 0614+09 and 2S 0918-549. They exhibit photon fluxes that surpass those at the Eddington limit later in the burst by factors of 2.6 to 3.1. We are able to explain both the short duration and the super-Eddington flux by mildly relativistic outflow velocities of 0.1$c$ to 0.3$c$ subsequent to the thermonuclear shell flashes on the neutron stars. These are the highest velocities ever measured from any thermonuclear flash. The precursor rise times are also exceptionally short: about 1 ms. This is inconsistent with predictions for nuclear flames spreading laterally as deflagrations and suggests detonations instead. This is the first time that a detonation is suggested for such a shallow ignition column depth ($y_{\rm ign}$ = 10$^{10}$ g cm$^{-2}$). The detonation would possibly require a faster nuclear reaction chain, such as bypassing the alpha-capture on $^{12}$C with the much faster $^{12}$C(p,$γ$)$^{13}$N($α$,p)$^{16}$O process previously proposed. We confirm the possibility of a detonation, albeit only in the radial direction, through the simulation of the nuclear burning with a large nuclear network and at the appropriate ignition depth, although it remains to be seen whether the Zel'dovich criterion is met. A detonation would also provide the fast flame spreading over the surface of the neutron star to allow for the short rise times. (...) As an alternative to the detonation scenario, we speculate on the possibility that the whole neutron star surface burns almost instantly in the auto-ignition regime. This is motivated by the presence of 150 ms precursors with 30 ms rise times in some superexpansion bursts from 4U 1820-30 at low ignition column depths of ~10$^8$ g cm$^{-2}$.
description: 11 pages, 6 figures, accepted by Astronomy and Astrophysics
Международное сотрудничество КНР в газовой сфере как стратегический приоритет современной энергетической политики Китая
Creators: name: Матвеев Владимир Александрович
Publisher: name: Китай в мировой и региональной политике. История и современность
Year: 2017
Subjects: ПРИРОДНЫЙ ГАЗ
ЭНЕРГЕТИЧЕСКАЯ ПОЛИТИКА
СТРАТЕГИЧЕСКОЕ РАЗВИТИЕ
ТРУБОПРОВОДЫ
КИТАЙ
ДУНБЭЙ
ВОСТОЧНАЯ СИБИРЬ

description: В статье анализируются причины выдвижения газовой промышленности КНР на позиции одного из стратегических приоритетов современной энергетической политики страны. Отмечено, что диверсификация каналов импорта газа и рост инвестиций в разработку сланцевых залежей призваны нивелировать увеличивающийся в среднесрочной перспективе дефицит газа в Китае. Анализируются мотивы заинтересованности КНР в заключении крупнейшей сделки между Газпромом и CNPC по доставке российского газа в Северо-Восточный Китай (Дунбэй).
Стратегия энергетической безопасности Китая: взгляд из Канады
Creators: name: Кутелева Анна Вячеславовна
Publisher: name: Китай в мировой и региональной политике. История и современность
Year: 2017
Subjects: ЭНЕРГЕТИЧЕСКАЯ ПОЛИТИКА КИТАЯ
КИТАЙСКО-КАНАДСКИЕ ОТНОШЕНИЯ
СОТРУДНИЧЕСТВО МЕЖДУ КИТАЕМ И КАНАДОЙ В СФЕРЕ ЭНЕРГЕТИКИ

description: В данной статье предложен краткий обзор канадской научно-экспертной литературы по вопросам энергетической безопасности Китая, а также рассматриваются основные изменения в канадско-китайском сотрудничестве в области энергетики в период с 2006 по 2017 г.
Absence of the Ordinary and Extraordinary Hall effects scaling in granular ferromagnets at metal-insulator transition
Creators: name: Bartov, D.
name: Segal, A.
name: Karpovski, M.
name: Gerber, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Universality of the extraordinary Hall effect scaling was tested in granular three-dimensional Ni-SiO2 films across the metal-insulator transition. Three types of magnetotransport behavior have been identified: metallic, weakly insulating and strongly insulating. Scaling between both the ordinary and extraordinary Hall effects and material resistivity is absent in the weakly insulating range characterized by logarithmic temperature dependence of conductivity. The results provide compelling experimental confirmation to recent models of granular metals predicting transition from logarithmic to exponential conductivity temperature dependence when inter-granular conductance drops below the quantum conductance value and loss of Hall effect scaling when inter-granular conductance is higher than the quantum one. The effect was found at high temperatures and reflects the granular structure of material rather than low temperature quantum corrections.
description: To be published in Phys.Rev.B
Сопряжение программ «Сделано в Китае - 2025» и Industrie 4. 0 как основа инновационного сотрудничества КНР и Германии
Creators: name: Тимофеев Олег Анатольевич
name: Ронжина Валерия Сергеевна
Publisher: name: Китай в мировой и региональной политике. История и современность
Year: 2017
Subjects: INDUSTRIE 4.0
«СДЕЛАНО В КИТАЕ
2025»
ИННОВАЦИИ
ЧЕТВЕРТАЯ ПРОМЫШЛЕННАЯ РЕВОЛЮЦИЯ

description: Статья посвящена инновационному сотрудничеству между Китаем и Германией. Авторы приводят подробное сравнение германской стратегии Industrie 4.0 и китайской инициативы «Сделано в Китае 2025». Проанализирован ход имплементации соглашений о сопряжении инновационных стратегий двух стран, его влияние на общие тенденции в китайско-германских отношениях. Авторы приходят к выводу о вероятности качественного скачка в инновационном развитии КНР в случае успешной реализации указанной стратегии.
Antiferromagnetic fluctuations and a dominant $d_{xy}$-wave pairing symmetry in nickelate-based superconductors
Creators: name: Chen, Chao
name: Ma, Runyu
name: Sui, Xuelei
name: Liang, Ying
name: Huang, Bing
name: Ma, Tianxing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Motivated by recent experimental studies on superconductivity found in nickelate-based materials, we study the temperature dependence of the spin correlation and the superconducting pairing interaction within an effective two-band Hubbard model by the quantum Monte Carlo method. Based on parameters extracted from first-principles calculations, our intensive numerical results reveal that the pairing with a $d_{xy}$-wave symmetry firmly dominates over other pairings at low temperature, which is mainly determined by the Ni 3$d$ orbital. It is also found that the effective pairing interaction is enhanced as the on-site interaction increases, demonstrating that the superconductivity is driven by strong electron-electron correlation. Even though the $(π,π)$ antiferromagnetic correlation could be enhanced by electronic interaction, there is no evidence for long-range antiferromagnetic order exhibited in nickelate-based superconductors. Moreover, our results offer possible evidence that the pure electron correlation may not account for the charge density wave state observed in nickelates.
description: Published version
Double Interlacing in Random Tiling Models
Creators: name: Adler, Mark
name: van Moerbeke, Pierre
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 60G60, 60G65, 35Q53 (Primary) 60G10, 35Q58 (Secondary)

description: Random tilings of very large domains will typically lead to a solid, a liquid, and a gas phase. In the two-phase case, the solid-liquid boundary (arctic curve) is smooth, possibly with singularities. At the point of tangency of the arctic curve with the domain-boundary, the tiles of a certain shape form for large-size domains a singly interlacing set, fluctuating according to the eigenvalues of the principal minors of a GUE-matrix (Gaussian unitary ensemble). Introducing non-convexities in large domains may lead to the appearance of several interacting liquid regions: they can merely touch, leading to either a split tacnode (also called hard tacnode), with two distinct adjacent frozen phases descending into the tacnode, or a soft tacnode. For appropriate scaling of the nonconvex domains and probing about such split tacnodes, filaments of tiles of a certain type will connect the liquid patches: they evolve in a bricklike-sea of dimers of another type. Nearby, the tiling fluctuations are governed by a discrete tacnode kernel; i.e., a determinantal point process on a doubly interlacing set of dots belonging to a discrete array of parallel lines. This kernel enables one to compute the joint distribution of the dots along those lines. This kernel appears in two very different models: (i) domino-tilings of skew-Aztec rectangles and (ii) lozenge-tilings of hexagons with cuts along opposite edges. Soft, opposed to hard, tacnodes appear when two arctic curves gently touch each other amidst a bricklike sea of dimers of one type, unlike the split tacnode. We hope that this largely expository paper will provide a view on the subject and be accessible to a wider audience.
description: 67 pages
PDF bias and flavor dependence in TMD distributions
Creators: name: Bury, Marcin
name: Hautmann, Francesco
name: Leal-Gomez, Sergio
name: Scimemi, Ignazio
name: Vladimirov, Alexey
name: Zurita, Pia
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Transverse momentum dependent (TMD) distributions match collinear parton density functions (PDF) in the limit of small transverse distances, which is accounted for by global extractions of TMD distributions. We study the influence of the collinear PDF value and uncertainties on the determination of unpolarized TMD distributions and the description of Drell-Yan (DY) and Z-boson production measurements at low transverse momenta. We take into account, for the first time, flavor-dependent non-perturbative TMD profiles. We carry out a Bayesian analysis to incorporate the propagation of PDF uncertainties into TMD extractions. We find that collinear PDF uncertainties and non-perturbative TMD flavor dependence are both essential to obtain reliable TMD determinations, and should be included in future global analyses.
description: 27 pages, 14 figures, SupplimentaryMaterials.pdf (26 pages) attached to the submission; ver2.: multiple updates to the text
Standards for Graph Algorithm Primitives
Creators: name: Mattson, Tim
name: Bader, David
name: Berry, Jon
name: Buluc, Aydin
name: Dongarra, Jack
name: Faloutsos, Christos
name: Feo, John
name: Gilbert, John
name: Gonzalez, Joseph
name: Hendrickson, Bruce
name: Kepner, Jeremy
name: Leiserson, Charles
name: Lumsdaine, Andrew
name: Padua, David
name: Poole, Stephen
name: Reinhardt, Steve
name: Stonebraker, Mike
name: Wallach, Steve
name: Yoo, Andrew
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Software (cs.MS)
subject: Discrete Mathematics (cs.DM)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: It is our view that the state of the art in constructing a large collection of graph algorithms in terms of linear algebraic operations is mature enough to support the emergence of a standard set of primitive building blocks. This paper is a position paper defining the problem and announcing our intention to launch an open effort to define this standard.
description: 2 pages, IEEE HPEC 2013
Exploring Bosonic and Fermionic Link Models on $(3+1)-$d tubes
Creators: name: Banerjee, Debasish
name: Huffman, Emilie
name: Rammelmüller, Lukas
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum link models (QLMs) have attracted a lot of attention in recent times as a generalization of Wilson's lattice gauge theories (LGT), and are particularly suitable for realization on quantum simulators and computers. These models are known to host new phases of matter and act as a bridge between particle and condensed matter physics. In this article, we study the Abelian $U(1)$ lattice gauge theory in $(3+1)$-d tubes using large-scale exact diagonalization (ED). We are then able to motivate the phase diagram of the model with finite size scaling techniques (FSS), and in particular propose the existence of a Coulomb phase. Furthermore, we introduce the first models involving fermionic quantum links, which generalize the gauge degrees of freedom to be of fermionic nature. We prove that while the spectra remain identical between the bosonic and the fermionic versions of the $U(1)$-symmetric quantum link models in $(2+1)$-d, they are different in $(3+1)$-d. We discuss the prospects of realizing the magnetic field interactions as correlated hopping in quantum simulator experiments.
description: 19 pages, 15 figures
К истории формирования отношений кнр-ес
Creators: name: Виноградов Андрей Олегович
name: Лущик Милена Олеговна
Publisher: name: Китай в мировой и региональной политике. История и современность
Year: 2017
Subjects: КНР
ЕВРОПЕЙСКИЙ СОЮЗ
ЭКОНОМИЧЕСКОЕ СОТРУДНИЧЕСТВО
ВТО
РЫНОЧНЫЙ СТАТУС

description: Статья посвящена истории формирования структуры отношений Китая со странами Европейского союза и охватывает период с 1949 по 2011 г. Особое внимание авторами уделяется торгово-экономическим отношениям сторон, поскольку именно они на протяжении долгого времени являются базой сотрудничества КНР и ЕС. Отдельно рассматривается сюжет, касающийся обстоятельств вступления Китая в ВТО и споров по поводу предоставления КНР статуса страны с рыночной экономикой.
Double shadow of a 4D Einstein-Gauss-Bonnet black hole and their connection between with quasinormal modes
Creators: name: Liu, Tian-Tian
name: Zhang, He-Xu
name: Feng, Yu-Hang
name: Deng, Jian-Bo
name: Hu, Xian-Ru
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we study the shadow of a 4D Einstein-Gauss-Bonnet black hole as photons couple to the Weyl tensor and find that the propagation of light depends on its polarization which leads to the existence of a double shadow. Then, we discuss the effect of the coupling parameter $λ$, the polarization of light and the Gauss-Bonnet coupling constant $α$ on shadow. Further we explore the influence of the Gauss-Bonnet coupling constant $α$ on the quasinormal modes (QNMs) of massless scalar field and investigate the connection between the real part of QNMs in the eikonal limit and the shadow radius of black holes. We find that in the eikonal limit the real part of QNMs is inversely proportional to the shadow radius under the case of the photons uncoupled to the Weyl tensor.
Mutations in motif II of Escherichia coli DNA helicase II render the enzyme nonfunctional in both mismatch repair and excision repair with differential effects on the unwinding reaction.
Creators: name: Matson, S W
name: Brosh, R M
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: Site-directed mutagenesis has been employed to address the functional significance of the highly conserved aspartic and glutamic acid residues present in the Walker B (also called motif II) sequence in Escherichia coli DNA helicase II. Two mutant proteins, UvrDE221Q and UvrDD220NE221Q, were expressed and purified to apparent homogeneity. Biochemical characterization of the DNA-dependent ATPase activity of each mutant protein demonstrated a kcat that was < 0.5% of that of the wild-type protein, with no significant change in the apparent Km for ATP. The E221Q mutant protein exhibited no detectable unwinding of either partial duplex or blunt duplex DNA substrates. The D220NE221Q mutant, however, catalyzed unwinding of both partial duplex and blunt duplex substrates, but at a greatly reduced rate compared with that of the wild-type enzyme. Both mutants were able to bind DNA. Thus, the motif II mutants E221Q and D220NE221Q were able to bind ATP and DNA to the same extent as wild-type helicase II but demonstrate a significant reduction in ATP hydrolysis and helicase functions. The mutant uvrD alleles were also characterized by examining their abilities to complement the mutator and UV light-sensitive phenotypes of a uvrD deletion mutant. Neither the uvrDE221Q nor the uvrDD220NE221Q allele, supplied on a plasmid, was able to complement either phenotype. Further genetic characterization of the mutant uvrD alleles demonstrated that uvrDE221Q confers a dominant negative growth phenotype; the uvrDD220NE221Q allele does not exhibit this effect. The observed difference in effect on viability may reflect the gene products' dissimilar kinetics for unwinding duplex DNA substrates in vitro.
Neural behavioral impact of daily sugar-sweetened beverage intake (Behavoiral analysis)
Creators: name: Burger, Kyle
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Public Health
subject: Nutrition
subject: Life Sciences
subject: Neuroscience and Neurobiology
subject: Psychiatry and Psychology
subject: Medicine and Health Sciences

description: Overall aim: Test the impact of repeated consumption of sugar sweetened beverage on behavioral responses during sugar-sweetened beverage intake and exposure to associated cues. Study pre-registration prior to data collection: ClinicalTrials.gov: NCT03490734 (submitted 4/6/2018)
High-resolution imaging of velocity-controlled molecular collisions using counterpropagating beams
Creators: name: Vogels, Sjoerd N.
name: Onvlee, Jolijn
name: von Zastrow, Alexander
name: Groenenboom, Gerrit C.
name: van der Avoird, Ad
name: van de Meerakker, Sebastiaan Y. T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present ultrahigh-resolution measurements of state-to-state inelastic differential cross sections for NO-Ne and NO-Ar collisions, obtained by combining the Stark deceleration and velocity map imaging techniques. We show that for counterpropagating crossed beam geometries, the effect of the velocity spreads of the reagent beams on the angular resolution of the images is minimized. Futhermore, the counterpropagating geometry results in images that are symmetric with respect to the relative velocity vector. This allows for the use of inverse Abel transformation methods that enhance the resolution further. State-resolved diffraction oscillations in the differential cross sections are measured with an angular resolution approaching 0.3$^\circ$. Distinct structures observed in the cross sections gauge the quality of recent \emph{ab initio} potential energy surfaces for NO-rare gas atom collisions with unprecedented precision.
PSYCHOLOGICAL FACTORS OF THE USE OF COACHING TECHNOLOGY IN THE FORMATION OF SPIRITUAL EMOTIONAL INTELLIGENCE IN STUDENTS
Creators: name: Bakhronova, Zulfiya
name: Ismoilova, Jasmina
Publisher: name: Zenodo
Year: 2023

description: At the present stage of reforming the system of higher education, there is a need to search for new modern technologies for managing the training and education of future teachers. The higher school makes high demands not only on the special training of a graduate of a pedagogical university (knowledge of the subject and teaching methods), but also on the assessment of his personal qualities and achievements. The readiness for self-development, the development of new equipment, technologies, and methods of work come first. In this regard, one of the promising areas of individualization of higher pedagogical education, which is based on the disclosure of the student's personal potential and abilities, is coaching.
Elliptic families of solutions to constrained Toda hierarchy
Creators: name: Zabrodin, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study elliptic families of solutions to the recently introduced constrained Toda hierarchy, i.e., solutions which are elliptic functions of some linear combination of the hierarchical times. Equations of motion for poles of such solutions are obtained.
description: 9 pages, no figures. arXiv admin note: text overlap with arXiv:2107.01697
A quantitative comparison of phase-averaged models for bubbly, cavitating flows
Creators: name: Bryngelson, Spencer H.
name: Schmidmayer, Kevin
name: Colonius, Tim
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We compare the computational performance of two modeling approaches for the flow of dilute cavitation bubbles in a liquid. The first approach is a deterministic model, for which bubbles are represented in a Lagrangian framework as advected features, each sampled from a distribution of equilibrium bubble sizes. The dynamic coupling to the liquid phase is modeled through local volume averaging. The second approach is stochastic; ensemble-phase averaging is used to derive mixture-averaged equations and field equations for the associated bubble properties are evolved in an Eulerian reference frame. For polydisperse mixtures, the probability density function of the equilibrium bubble radii is discretized and bubble properties are solved for each representative bin. In both cases, the equations are closed by solving Rayleigh-Plesset-like equations for the bubble dynamics as forced by the local or mixture-averaged pressure, respectively. An acoustically excited dilute bubble screen is used as a case study for comparisons. We show that observables of ensemble- and volume-averaged simulations match closely and that their convergence is first order under grid refinement. Guidelines are established for phase-averaged simulations by comparing the computational costs of methods. The primary costs are shown to be associated with stochastic closure; polydisperse ensemble-averaging requires many samples of the underlying PDF and volume-averaging requires repeated, randomized simulations to accurately represent a homogeneous bubble population. The relative sensitivities of these costs to spatial resolution and bubble void fraction are presented.