Tensile behavior of an austenitic stainless steel subjected to multidirectional forging

The mechanical behavior of a chromium -nickel austenitic stainless steel with submicrocrystalline structures produced by multidirectional forging (MDF) to a total strain of ∼ 4 at temperatures of 700 and 600° C was studied. This processing resulted in the formation of uniform ultrafine grained structure with an average crystallite size of 360 and 300 nm, respectively, and high dislocation density. The tensile tests were carried out in a wide temperature range 20 -650° C. At ambient temperature, the yield stress (YS) comprised 900 MPa and 730 MPa in the samples subjected to MDF at 600 and 700° C, respectively. It should be noted that this strength was achieved along with elongations of 16% and 22% in the samples subjected to MDF at 600 and 700° C. The YS decreased and elongati on-to-failure tends to increase with increasing test temperature and approaching 235 MPa and 51%, respectively, at 650° C. Effect of temperature on mechanical behavior of stainless steel with submicrocrystalline structure is discusse

Observation of narrow baryon resonance decaying into pKs0pK^0_s in pA-interactions at 70GeV/c70 GeV/c with SVD-2 setup

SVD-2 experiment data have been analyzed to search for an exotic baryon state, the $\Theta^+$-baryon, in a $pK^0_s$ decay mode at $70 GeV/c$ on IHEP accelerator. The reaction $pA \to pK^0_s+X$ with a limited multiplicity was used in the analysis. The $pK^0_s$ invariant mass spectrum shows a resonant structure with $M=1526\pm3(stat.)\pm 3(syst.) MeV/c^2$ and $\Gamma < 24 MeV/c^2$. The statistical significance of this peak was estimated to be of $5.6 \sigma$. The mass and width of the resonance is compatible with the recently reported $\Theta^+$- baryon with positive strangeness which was predicted as an exotic pentaquark ($uudd\bar{s}$) baryon state. The total cross section for $\Theta^+$ production in pN-interactions for $X_F\ge 0$ was estimated to be $(30\div120) \mu b$ and no essential deviation from A-dependence for inelastic events $(\sim A^{0.7})$ was found.Comment: 8 pages, 7 figures, To be submitted to Yadernaya Fizika. v3-v5 - Some references added, minor typos correcte

The DALIH Database for Recording Disaster Damage and Loss Data in Cultural Heritage

The Sendai Framework for Disaster Risk Reduction (SFDRR) upholds the development and implementation of measures to reduce hazard exposure and vulnerability to disasters. Among other aspects, the SFDRR recognizes the importance of cultural heritage for society, thus emphasizing the need to assess the impact that potential hazards may have on the built cultural heritage. Developing adequate risk assessment and management processes are fundamental towards this end and disaster damage and loss data are known to be essential for such processes. The development of systems, models and methods to collect and handle such data is, thus, seen as a worldwide priority. In this context, the paper presents a database framework for the worldwide collection of immovable cultural heritage disaster loss data currently under development. The concepts and technical aspects related to the data being collected and its structure are discussed, as well as the type of indicators being recorded. Challenges regarding disaster loss data collection for cultural heritage are discussed, as well as the benefits of these data for developing more rational disaster risk management approaches for cultural heritage. (c) The Author(s), under exclusive license to Springer Nature Switzerland AG 2024

Optimally shaped terahertz pulses for phase retrieval in a Rydberg atom data register

We employ Optimal Control Theory to discover an efficient information retrieval algorithm that can be performed on a Rydberg atom data register using a shaped terahertz pulse. The register is a Rydberg wave packet with one consituent orbital phase-reversed from the others (the ``marked bit''). The terahertz pulse that performs the decoding algorithm does so by by driving electron probability density into the marked orbital. Its shape is calculated by modifying the target of an optimal control problem so that it represents the direct product of all correct solutions to the algorithm.Comment: 6 pages, 3 figure

Rapidity, azimuthal, and multiplicity dependence of mean transverse momentum and transverse momentum correlations in π+p\pi^{+}p and K+pK^{+}p collisions in s\sqrt{s}=22 GeV

Rapidity, azimuthal and multiplicity dependence of mean transverse momentum and transverse momentum correlations of charged particles is studied in pi/sup positive and K/sup positive collisions at 250 GeV/c incident beam momentum. For the first time, it is found that the rapidity dependence of the two-particle transverse momentum correlation is different from that of the mean transverse momentum, but both have similar multiplicity dependence. In particular, the transverse momentum correlations are boost invariant. This is similar to the recently found boost invariance of the charge balance function. A strong azimuthal dependence of the transverse momentum correlations originates from the constraint of energy-momentum conservation. The results are compared with those from the PYTHIA Monte Carlo generator. The similarities to and differences with the results from current heavy ion experiments are discussed

Fixed Collocations with Epitheta Ornantia in the Livonian Rhymed Chronicle in Terms of Historical Pragmalinguistics

Introduction. The paper  considers  Middle High German  poetic  nominations  of a warrior such as helt ‘hero’, ritter ‘knight’ and degen  ‘warrior’ combined  with epitheta  ornantia.  The aim of this paper is to find out the most characteristic contexts  for these  lexemes.Methodology and sources. The research is based on methodology of historical pragmalinguistics and cognitive linguistics, in particular on the frames’ theory by Ch. Fillmore. As material for the research serves the Livonian Rhymed Chronicle (late XIIIth cent.), written in the East Middle German dialect. The text’s linguistic features  are scarcely studied by historical linguists in Russia. The Chronicle was written under the influence of courtly epics, which fact was discussed by U. Arnold, M. Fischer, H. Kugler, A. Murray and others.Results and discussion. In the Chronicle’s text there  were selected  10 frames  that include the  analyzed  nouns  with epitheta   ornantia.  The  noun  helt  can  also  be  found  in parts including and introducing  direct  speech.  Each of the  three  nouns  was analyzed as  to  in which frames it is attested and which epitheta  are more common in each frame.Conclusion. A  conclusion  was drawn that  the  noun  helt  ‘hero’  appears  in almost  all the frames,  ritter  ‘knight’  appears  mostly  in frames  that  refer  to  static  situations  and  degen ‘warrior’ – in frames that refer to dynamic situations. Moreover, the lexeme  helt ‘hero’ has a wider distribution range in the Chronicle than the other two nouns