cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Ανάλυση δοκιμίων υλικών με μικροδομή και χρήση πεπερασμένων στοιχείων
title: Study of material speciments with microstructure using finite elemets
Creators: name: Νταρας Ευαγγελος
Publisher: name: Technical University of Crete
Year: 2024

description: Η συγκεκριμένη εργασία εμβαθύνει στην εξέταση δειγμάτων υλικών με σύνθετες μικροδομές χρησιμοποιώντας τη διπλή προσέγγιση της γραμμικής και μη γραμμικής ανάλυσης πεπερασμένων στοιχείων. Μέσω της συστηματικής υπολογιστικής μοντελοποίησης, η μελέτη στοχεύει στη διάκριση των διαφοροποιημένων μηχανικών αποκρίσεων των υλικών υπό διαφορετικές συνθήκες φορτίου. Η γραμμική ανάλυση χρησιμεύει ως βάση για την αποκάλυψη της βασικής δομικής συμπεριφοράς, ενώ η μη γραμμική ανάλυση εμβαθύνει στην πολυπλοκότητα που προκαλείται λόγω μεγάλων παραμορφώσεων και μη γραμμικότητας του υλικού. Με την εφαρμογή αυτών των δοκιμίων σε ολοκληρωμένες προσομοιώσεις πεπερασμένων στοιχείων, στοχεύουμε στην αποσαφήνιση των αλληλεπιδράσεων των χαρακτηριστικών της μικροδομής και της μακροσκοπικής συμπεριφοράς των υλικών. Η μελέτη συμβάλλει σε ουσιαστικές γνώσεις σχετικά με τη μηχανική πολυπλοκότητα των υλικών, προωθεί την εξέλιξη στις πρακτικές της μηχανικής και του σχεδιασμού υλικών και ενισχύει το ρόλο των μικροδομών στον προσδιορισμό της απόδοσης των υλικών.
description: This study delves into the examination of material samples with complex microstructures using the dual approach of linear and nonlinear finite element analysis. Through systematic modeling, the study aims to distinguish the differentiated mechanical responses of materials under different load conditions. Linear analysis serves as a basis for revealing basic structural behavior, while nonlinear analysis delves into the complexity caused by large deformations and material nonlinearities. By applying these tests to finite element simulations, we aim to clarify the interactions between the microstructural features and the macroscopic behavior of the materials. This study contributes to essential knowledge according to the mechanical complexity of materials, promotes progress in engineering and design material practices and reinforces the role of microstructures in determining the performance of every material.
A Comprehensive Search for Gamma-Ray Lines in the First Year of Data from the INTEGRAL Spectrometer
Creators: name: Teegarden, B. J.
name: Watanabe, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have carried out an extensive search for gamma-ray lines in the first year of public data from the Spectrometer (SPI) on the INTEGRAL mission. INTEGRAL has spent a large fraction of its observing time in the Galactic Plane with particular concentration in the Galactic Center (GC) region (~ 3 Msec in the first year). Hence the most sensitive search regions are in the Galactic Plane and Center. The phase space of the search spans the energy range 20-8000 keV and line widths from 0-1000 keV (FWHM). It includes both diffuse and point-like emission. We have searched for variable emission on time scales down to ~ 1000 sec. Diffuse emission has been searched for on a range of different spatial scales from ~ 20 deg (the approximate field-of-view of the spectrometer) up to the entire Galactic Plane. Our search procedures were verified by the recovery of the known gamma-ray lines at 511 keV and 1809 keV at the appropriate intensities and significances. We find no evidence for any previously unknown gamma-ray lines. The upper limits range from a few x 10^-5 cm^-2 s^-1 to a few x 10^-2 cm^-2 s^-1 depending on line width, energy and exposure; regions of strong instrumental background lines were excluded from the search. Comparison is made between our results and various prior predictions of astrophysical lines.
description: Accepted for publication in ApJ
Measurement of the very rare $K^+\rightarrowπ^+ν\barν$ decay
Creators: name: NA62 Collaboration
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The NA62 experiment reports the branching ratio measurement BR$(K^+ \rightarrow π^+ ν\barν) = (10.6^{+4.0}_{-3.4} |_{\rm stat} \pm 0.9_{\rm syst}) \times 10 ^{-11}$ at 68% CL, based on the observation of 20 signal candidates with an expected background of 7.0 events from the total data sample collected at the CERN SPS during 2016-2018. This provides evidence for the very rare $K^+ \rightarrow π^+ ν\barν$ decay, observed with a significance of 3.4$σ$. The experiment achieves a single event sensitivity of $(0.839\pm 0.054)\times 10^{-11}$, corresponding to 10.0 events assuming the Standard Model branching ratio of $(8.4\pm1.0)\times10^{-11}$. This measurement is also used to set limits on BR($K^+ \to π^+ X$), where $X$ is a scalar or pseudo-scalar particle. Details are given of the analysis of the 2018 data sample, which corresponds to about 80% of the total data sample.
Fermionic Contributions to the Free Energy of Noncommutative Quantum Electrodynamics at High Temperature
Creators: name: Brandt, F. T.
name: Frenkel, J.
name: Muramoto, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the fermionic contributions to the free energy of noncommutative QED at finite temperature $T$. This analysis extends the main results of our previous investigation where we have considered the pure bosonic sector of the theory. For large values of $θT^2$ ($θ$ is the magnitude of the noncommutative parameters) the fermionic contributions decrease the value of the critical temperature, above which there occurs a thermodynamic instability.
description: 6 pages, 3 figures. To be published in Physics Letters B
Molecular Identification of Trematode, Haplorchis taichui Cercariae (Trematoda: Heterophyidae) in Tarebia granifera Snail Using ITS2 Sequences
Creators: name: Suksan Chuboon
name: Chalobol Wongsawad
name: Pheravut Wongsawad
Publisher: name: Yala Rajabhat University
Year: 2013
Subjects: Molecular identification, Trematode, Cercariae, Tarebia granifera, ITS2 Sequence

description: 1, 8, Journal of Yala Rajabhat University
ТУРКИСТОН КАСАБА УЮШМАЛАРИ ТИЗИМИДА ЯРАШТИРУВ ИНСТИТУТИ (1905-1907 ЙИЛДАГИ КАСАБА УЮШМАЛАРИ УСТАВЛАРИНИНГ ТАҲЛИЛИ АСОСИДА)
Creators: name: Абдукаримова, Мадинабону
Publisher: name: Zenodo
Year: 2024

description: Мазкур тезисда Туркистон касаба уюшмалари тизимида илк маротаба пайдо бўлган яраштирув институти ҳақида фикр юритилади. Туркистон ўлкасида 1905-1907 йилларда юзага келган касаба уюшмалари уставларининг моддалари таҳлил қилиниб, уларнинг асосида меҳнат низоларини ҳал қилиш бўйича яраштирув комиссияси тўғрисидаги нормалар аниқланади.
Computational analysis of charge distribution of Pd nanoparticles on Mg and MgO substrate
Creators: name: Νικούλης, Γεώργιος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: subject: Νανοτεχνολογία
subject: Κατανομή φορτίου
subject: Υπόστρωμα
subject: Nanotechnology
subject: FOS: Nanotechnology
subject: Charge distribution
subject: Substrate

description: Μέσο αυτής της δουλειάς παρουσιάζουμε μία καινούρια μεθοδολογία για την μελέτη της μεταφοράς φορτίου σε ένα σύστημα σε θεωρητικό επίπεδο κάνοντας χρήση της Density Functional Theory (DFT). Με αυτή την μέθοδο μπορούμε να απεικονίσουμε το νέφος ηλεκτρονίου και να παρατηρήσουμε την συμπεριφορά του κάτω από κάποιες περιπτώσεις. Για τις προσομοιώσεις μοντελοποιήσαμε πειραματικες εικόνες οι οποίες δημιουργήθηκαν με Transmission Electron Microscopy (TEM). Θα μελετήσουμε δέκα τέτοια συστήματα. Πιο συγκεκριμένα, τα συστήματα θα προσομοιώνουν νανοκαλόδια όπου έχουν τοποθετηθεί νανοσωματίδια στην επιφάνειά τους. Τα νανοσωματίδια αύτα λειτουργούν ως ηλεκτροκαταλυτες. Έτσι θα μελετήσουμε την μεταφορά φορτίου η οποία παρατηρείται λόγο ύπαρξης δεσμών ανάμεσα στην επιφάνεια του νανοκαλοδίου και στο νανοσοματίδιο.. Τα νανοσωματίδια που χρησιμοποιήθηκαν είναι δύο νανοσωματίδια από Pd, το ένα σε εικοσαεδρικό σύστημα και το άλλο σε εξαγωνικό σύστημα. Διάφοροι προσανατολισμοί χρησιμοποιήθηκαν για τα νανοσωματίδια τα οποία τοποθετήθηκαν πάνω στην υπόστρωμα για να καλυφτούν όσο το δυνατόν περισσότερες περιπτώσεις. Δύο τύποι υποστρωμάτων χρησιμοποιήθηκαν. Ο πρώτος αποτελείται από MgO και ο άλλος από Mg.
description: This work introduces a novel method to study the charge transfer within a system at a theoretical level with the use of the Density Functional Theory (DFT). With this method we are able to visualize the electron cloud and see how it behaves under certain circumstances. For the simulations, we will try to model experimental images that were created with Transmission Electron Microscopy (TEM). We will analyses ten of those systems. More precise, the systems will simulate nanowires with nanoparticles attached on their surface, acting as electrocatalysts, and examine the charge transfer in the system which takes place due to the bonds between the substrate and the nanoparticle. The nanoparticles that were used are two Pd nanoparticles, one with an icosahedral system and the other with a hexagonal system. Various directions were used to place the nanoparticles on the substrate to cover as many cases as possible. Two kinds of substrate were used. The first consists of MgO and the other of pure Mg.
Magnetized Kerr-Newman-Taub-NUT spacetimes
Creators: name: Ghezelbash, Masoud
name: Siahaan, Haryanto M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We find a new class of exact solutions in the Einstein-Maxwell theory by employing the Ernst magnetization process to the Kerr-Newman-Taub-NUT spacetimes. We study the solutions and find that they are regular everywhere. We also find the quasilocal conserved quantities for the spacetimes, the corresponding Smarr formula and the first law of thermodynamics.
description: 38 pages, 17 figures, typos corrected, one appendix added
Large Magnetic Fields and Motions of OH Masers in W75 N
Creators: name: Fish, Vincent L.
name: Reid, Mark J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on a second epoch of VLBA observations of the 1665 and 1667 MHz OH masers in the massive star-forming region W75 N. We find evidence to confirm the existence of very strong (~40 mG) magnetic fields near source VLA 2. The masers near VLA 2 are dynamically distinct and include a very bright spot apparently moving at 50 km/s relative to those around VLA 1. This fast-moving spot may be an example of a rare class of OH masers seen in outflows in star-forming regions. Due to the variability of these masers and the rapidity of their motions, tracking these motions will require multiple observations over a significantly shorter time baseline than obtained here. Proper motions of the masers near VLA 1 are more suggestive of streaming along magnetized shocks rather than Keplerian rotation in a disk. The motions of the easternmost cluster of masers in W75 N (B) may be tracing slow expansion around an unseen exciting source.
description: 7 pages including 4 figures (2 color) & 3 tables, to appear in ApJ
สภาพการจัดประสบการณ์เรียนรู้สำหรับเด็กปฐมวัยที่ใช้ภาษาไทยเป็นภาษาที่สอง และแนวทางในการพัฒนาสื่อประสมสองภาษา : กรณีศึกษาจังหวัดนราธิวาส
Creators: name: มูนีเร๊าะ ผดุง
name: สุรชัย สุขสกุลชัย
name: วิราพรรณ แก้วประพันธ์
name: สิริพร ศรเรือง
name: พิมพรรณ อนันทเสนา
name: รูซรีนา ปาแนแจกะ
Publisher: name: มหาวิทยาลัยราชภัฏยะลา
Year: 2556
Subjects: การจัดประสบการณ์เรียนรู้, เด็กปฐมวัย, การเรียนรู้ภาษาที่สอง, สื่อประสม, สื่อสองภาษา

description: 1, 8, วารสารมหาวิทยาลัยราชภัฏยะลา
Quenches in initially coupled Tomonaga-Luttinger Liquids: a conformal field theory approach
Creators: name: Ruggiero, Paola
name: Calabrese, Pasquale
name: Foini, Laura
name: Giamarchi, Thierry
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the quantum quench in two coupled Tomonaga-Luttinger Liquids (TLLs), from the off-critical to the critical regime, relying on the conformal field theory approach and the known solutions for single TLLs. We consider a squeezed form of the initial state, whose low energy limit is fixed in a way to describe a massive and a massless mode, and we encode the non-equilibrium dynamics in a proper rescaling of the time. In this way, we compute several correlation functions, which at leading order factorize into multipoint functions evaluated at different times for the two modes. Depending on the observable, the contribution from the massive or from the massless mode can be the dominant one, giving rise to exponential or power-law decay in time, respectively. Our results find a direct application in all the quench problems where, in the scaling limit, there are two independent massless fields: these include the Hubbard model, the Gaudin-Yang gas, and tunnel-coupled tubes in cold atoms experiments.
description: New section with goal and main results included (1.1), further changes and explanations in sections 2 and 4
From aggressive driving to molecular motor traffic
Creators: name: Kunwar, Ambarish
name: Schadschneider, Andreas
name: Chowdhury, Debashish
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Motivated by recent experimental results for the step sizes of dynein motor proteins, we develope a cellular automata model for intra-cellular traffic of dynein motors incorporating special features of the hindrance-dependent step size of the individual motors. We begin by investigating the properties of the aggressive driving model (ADM), a simple cellular automata-based model of vehicular traffic, a unique feature of which is that it allows a natural extension to capture the essential features of dynein motor traffic. We first calculate several collective properties of the ADM, under both periodic and open boundary conditions, analytically using two different mean-field approaches as well as by carrying out computer simulations. Then we extend the ADM by incorporating the possibilities of attachment and detachment of motors on the track which is a common feature of a large class of motor proteins that are collectively referred to as cytoskeletal motors. The interplay of the boundary and bulk dynamics of attachment and detachment of the motors to the track gives rise a phase where high and low density phases separated by a stable domain wall coexist. We also compare and contrast our results with the model of Parmeggiani et. al. (Phys. Rev. Lett. {\bf 90}, 086601 (2003)) which can be regarded as a minimal model for traffic of a closely related family of motor proteins called kinesin. Finally, we compare the transportation efficiencies of dynein and kinesin motors over a range of values of the model parameters.
description: Final Version Accepted for Publication in J. Phys. A (IOP, UK)
Renormalization of expansions for Regge trajectories of the Schrödinger equation
Creators: name: Kulikov, D. A.
name: Tutik, R. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A recursion technique for the renormalization of semiclassical expansions for the Regge trajectories of bound states of the Schrödinger equation is developed. As an application of the proposed technique, the two-parameter renormalization scheme of the Regge trajectories for the bound states in the Martin potential is considered.
description: 5 pages, no figures
The post-Herschel view of intrinsic AGN emission: constructing templates for galaxy and AGN emission at IR wavelengths
Creators: name: Bernhard, E.
name: Tadhunter, C.
name: Mullaney, J. R.
name: Grimmett, L. P.
name: Rosario, D. J.
name: Alexander, D. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Measuring the star-forming properties of AGN hosts is key to our understanding of galaxy formation and evolution. However, this topic remains debated, partly due to the difficulties in separating the infrared (i.e. 1--1000 $μ$m) emission into AGN and star-forming components. Taking advantage of archival far-infrared data from Herschel, we present a new set of AGN and galaxy infrared templates, and introduce the spectral energy distribution fitting code IRAGNSEP. Both can be used to measure infrared host galaxy properties, free of AGN contamination. To build these, we used a sample of 100 local ($z$ < 0.3), low-to-high luminosity AGNs (i.e. $L_{\rm bol}~\sim~10^{42--46}~\rm erg~s^{-1}$), selected from the 105-month Swift - BAT X-ray survey, which have archival Spitzer - IRS spectra and Herschel photometry. We first built a set of seven galaxy templates using a sample of 55 star-forming galaxies selected via infrared diagnostics. Using these templates, combined with a flexible model for the AGN contribution, we extracted the intrinsic infrared emission of our AGN sample. We further demonstrate that we can reduce the diversity in the intrinsic shapes of AGN spectral energy distributions down to a set of three AGN templates, of which two represent AGN continuum, and one represents silicate emission. Our results indicate that, on average, the contribution of AGNs to the far-infrared ($λ~\gtrsim$ 50 $μ$m) is not as high as suggested by some recent work. We further show that the need for two infrared AGN continuum templates could be related to nuclear obscuration, where one of our templates appears dominated by the emission of the extended polar dust.
description: 20 pages (38 pages including appendices), 19 figures, 6 tables, Accepted for publication in MNRAS
D12.6 Final Communications Report
Creators: name: Parry, Huw
Publisher: name: SteamBioAfrica
Year: 2024
Subjects: Communication

description: The D12.6 deliverable description states: “To ensure effective communication of the project to both targeted audiences and to the wider public. To ensure recognition of EU Horizon 2020 funding support for this project is clearly displayed. To provide a record of targeted communication activities undertaken in during the period.”This report advances on the draft report (D1.4) submitted at the project’s mid-term (month 18). It confirms that we have over the life of the project met the project’s Communication Objectives presented in Annex 1 of the Grant Agreement and copied in this report. It also confirms that our communication activities and targeted audiences have been appropriate, to enable effective post project impact.In the PDER we identified target audiences, this report details our communications with them. We can confirm that we have engaged with decision making representatives from all categories of these audiences with encouraging feedback. However, we recognise that the project only partially fulfilled its ambition of being market ready at the close, instead whilst the project has delivered technically and shows great promise there will be a need for further development work to ensure that the economic viability is established.We can confirm that all project communication activities have included the correctly worded acknowledgment of EU Horizon 2020 funding support. Prior to any communication material being issued, partners provided copy to SBL and Carbon Capital to ensure no confidential information is disclosed, messaging is consistent, and EU acknowledgement is included. Targeted communication activities have been categorised into:• Website & digital marketing• Traditional media• Exhibitions & conferences• Demonstrations and Knowledge Sharing Workshops• Recording of New ContactsIn preparing this report we can confirm that activities have progressed in all categories and have been relevant and of interest to the audiences. We can confirm that interest from many of these audiences is exceptionally high and provides confidence in the long-term impact once the economic viability of the technology is verified.
Non-Gaussian Stochastic Gravitational Waves from Phase Transitions
Creators: name: Kumar, Soubhik
name: Sundrum, Raman
name: Tsai, Yuhsin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Cosmological phase transitions in the primordial universe can produce anisotropic stochastic gravitational wave backgrounds (GWB), similar to the cosmic microwave background (CMB). For adiabatic perturbations, the fluctuations in GWB follow those in the CMB, but if primordial fluctuations carry an isocurvature component, this need no longer be true. It is shown that in non-minimal inflationary and reheating settings, primordial isocurvature can survive in GWB and exhibit significant non-Gaussianity (NG) in contrast to the CMB, while obeying current observational bounds. While probing such NG GWB is at best a marginal possibility at LISA, there is much greater scope at future proposed detectors such as DECIGO and BBO. It is even possible that the first observations of inflation-era NG could be made with gravitational wave detectors as opposed to the CMB or Large-Scale Structure surveys.
description: 12+3 pages, 2 figures
Orbital dichotomy of Fermi liquid properties in Sr$_2$RuO$_4$ revealed by Raman spectroscopy
Creators: name: Philippe, J. -C.
name: Baptiste, B.
name: Sow, C.
name: Maeno, Y.
name: Forget, A.
name: Colson, D.
name: Cazayous, M.
name: Sacuto, A.
name: Gallais, Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report a polarization-resolved Raman spectroscopy study of the orbital dependence of the quasiparticles properties in the prototypical multi-band Fermi liquid Sr\textsubscript{2}RuO\textsubscript{4}. We show that the quasiparticle scattering rate displays $ω^{2}$ dependence as expected for a Fermi liquid. Besides, we observe a clear polarization-dependence in the energy and temperature dependence of the quasiparticle scattering rate and mass, with the $d_{xz/yz}$ orbital derived quasiparticles showing significantly more robust Fermi liquid properties than the $d_{xy}$ orbital derived ones. The observed orbital dichotomy of the quasiparticles is consistent with the picture of Sr\textsubscript{2}RuO\textsubscript{4} as a Hund's metal. Our study establishes Raman scattering as a powerful probe of Fermi liquid properties in correlated metals.
description: 9 pages, 4 figures, Supplementary Materials available at publisher site
Scaling Behavior and Variable Hopping Conductivity in the Quantum Hall Plateau Transition
Creators: name: Tu, Tao
name: Zhao, Yong-Jie
name: Guo, Guo-Ping
name: Hao, Xiao-Jie
name: Guo, Guang-Can
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have measured the temperature dependence of the longitudinal resistivity $% ρ_{xx}$ of a two-dimensional electron system in the regime of the quantum Hall plateau transition. We extracted the quantitative form of scaling function for $ρ_{xx}$ and compared it with the results of ordinary scaling theory and variable range hopping based theory. We find that the two alternative theoretically proposed scaling functions are valid in different regions.
description: 4 pages, 4 figures
Gauge/string duality and hadronic physics
Creators: name: Boschi-Filho, Henrique
name: Braga, Nelson R. F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review some recent results on phenomenological approaches to strong interactions inspired in gauge/string duality. In particular, we discuss how such models lead to very good estimates for hadronic masses.
description: 5pages, talk presented in I Latin American Workshop on High Energy Phenomenology, Porto Alegre, Brazil, December 2005, to appear in the proceedings
The pp->K+ n Sigma+ reaction near threshold
Creators: name: Valdau, Yu.
name: Koptev, V.
name: Barsov, S.
name: Büscher, M.
name: Dymov, S.
name: Hartmann, M.
name: Kacharava, A.
name: Merzliakov, S.
name: Mikirtychyants, S.
name: Mussgiller, A.
name: Nekipelov, M.
name: Schleichert, R.
name: Ströher, H.
name: Wilkin, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Inclusive K+ production in proton-proton collisions has been measured at a beam energy of 2.16 GeV using the COSY-ANKE magnetic spectrometer. The resulting spectrum, as well as those corresponding to K+ p and K+ pi+ correlated pairs, can all be well described using consistent values of the total cross sections for the pp->K+ p Lambda, pp->K+ p Sigma0, and pp->K+ n Sigma+ reactions. While the resulting values for Lambda and Sigma0 production are in good agreement with world data, our value for the total Sigma+ production cross section, sigma(pp->K+ n Sigma+) = 2.5+/-0.6(stat)+/-0.4(syst) mkb at an excess energy of epsilon=129 MeV, could only be reconciled with other recently published data if there were a highly unusual near--threshold behaviour.
description: 9 pages, 5 figures
Enhancing postural balance assessment through neural network-based lower-limb muscle strength evaluation with reduced markers
Creators: name: Chen, Jianhan
name: Huang, Yueshan
name: Li, Runfeng
name: Wu, Hancong
name: Ke, Jin
name: Liu, Chengrang
name: Lao, Yonghua
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Space Science
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Computational Biology

description: Aiming to simplify the data acquisition process for balance diagnosis and focused on muscle, a direct factor affecting balance, to assess and judge postural stability. Utilizing a publicly available kinematic dataset, the research retained 3D coordinates and mechanical data for 8 markers on the lower limbs. By integrating this data with the musculoskeletal model in OpenSim, inverse kinematic calculations were performed to derive muscle forces. These forces, alongside the coordinates, were split into an 8:2 training and test set ratio. A neural network was then developed to predict muscle forces using normalized coordinate data from the training set as input, with corresponding muscle force data as training labels. The model’s accuracy was confirmed on the test set, achieving coefficients of determination (R2) above 0.99 for 276 muscle forces. Furthermore, the Force Maximum Percentage Difference (FMPD) was introduced as a novel criterion to evaluate and visualize lower limb balance, revealing significant discrepancies between the patient and control groups. This study successfully demonstrates that the neural network model can precisely predict lower limb muscle forces using reduced markers and introduces FMPD as an effective tool for assessing limb balance, providing a robust framework for future diagnostic and rehabilitative applications.
Additional file 1: of The EMIF-AD PreclinAD study: study design and baseline cohort overview
Creators: name: Konijnenberg, Elles
name: Carter, Stephen
name: ten Kate, Mara
name: den Braber, Anouk
name: Tomassen, Jori
name: Amadi, Chinenye
name: Wesselman, Linda
name: Nguyen, Hoang-Ton
name: van de Kreeke, Jacoba
name: Yaqub, Maqsood
name: Demuru, Matteo
name: Mulder, Sandra
name: Hillebrand, Arjan
name: Bouwman, Femke
name: Teunissen, Charlotte
name: SernĂŠ, Erik
name: Moll, Annette
name: Verbraak, Frank
name: Hinz, Rainer
name: Pendleton, Neil
name: Lammertsma, Adriaan
name: van Berckel, Bart
name: Barkhof, Frederik
name: Boomsma, Dorret
name: Scheltens, Philip
name: Herholz, Karl
name: Visser, Pieter
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy
subject: Computational Biology

description: Table S1. Inclusion and exclusion criteria. (DOCX 36Â kb)
Η αυτοκράτειρα Θεοδώρα (περ. 500-548) σύζυγος του Ιουστινιανού Α΄
Creators: name: Τζιουβάρα, Τριανταφυλλιά Σωτηρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Αυτοκράτειρα
Θεοδώρα
Ιουστινιανός
Empress
Theodora
Justinian

description: Σκοπός της διατριβής ήταν η μελέτη της ζωής της Θεοδώρας και της δράσης της ως αυτοκράτειρας του Βυζαντίου στο πλευρό του Ιουστινιανού. Με βάση τις βυζαντινές και συριακές πηγές επιχειρήσαμε μια διερεύνηση του βίου της Θεοδώρας και του σημαντικού ρόλου που εκείνη διαδραμάτισε στη διακυβέρνηση του Ιουστινιανού. Αναφερθήκαμε αναλυτικά στη δράση της στην εσωτερική και εξωτερική πολιτική, στη συμβολή της στις κοινωνικές μεταρρυθμίσεις του Ιουστινιανού που αποσκοπούσαν στη βελτίωση της θέσης της γυναίκας στη βυζαντινή κοινωνία, καθώς και στο φιλανθρωπικό έργο του αυτοκρατορικού ζεύγους. Επιπλέον, αναφερθήκαμε στα αποτελέσματα που είχε η επιρροή της Θεοδώρας στον Ιουστινιανό, κατά την άσκηση της εκκλησιαστικής του πολιτικής. Τέλος, επιχειρήσαμε μια σκιαγράφηση της προσωπικότητάς της, σύμφωνα με τις πληροφορίες που αντλήσαμε από τις πηγές για το ήθος και τις πράξεις της πριν και μετά την απόκτηση του αυτοκρατορικού τίτλου
description: The purpose of the dissertation was to study the life of Theodora and her actions as empress of Byzantium by Justinian’s side. Based on Byzantine and Syrian sources, we have explored the life of Theodora and the important role that she played in Justinian’s rule. We referred in detail to her actions in domestic and foreign policy, her contribution to Justinian’s social reforms aimed at improving the position of woman in byzantine society and the charity work of the imperial couple. In addition, we referred to the effects of Theodora’s influence on Justinian in the exercise of his ecclesiastical policy. Finally, we attempted to outline her personality, according to the information we got from sources about her ethos and her actions before and after the imperial title
Instability of charged and rotating naked singularities
Creators: name: Dotti, Gustavo
name: Gleiser, Reinaldo
name: Pullin, Jorge
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We provide evidence that ``super-extremal'' black hole space-times (either with charge larger than mass or angular momentum larger than mass), which contain naked singularities, are unstable under linearized perturbations. This is given by an infinite family of exact unstable solutions in the charged non rotating case, and by a set of (unstable) numerical solutions in the rotating case. These results may be relevant to the expectation that these space-times cannot be the endpoint of physical gravitational collapse.
description: 5 Pages, RevTex, 2 figures, improved discussion of several points, references added, to appear in Phys. Lett. B
D12.1 Data Management Plan
Creators: name: Knicker, Heike
name: Parry, Huw
Publisher: name: SteamBioAfrica
Year: 2022
Subjects: Data Management Plan

description: This Data Management Plan (DMP) is based upon the H2020 guidelines on FAIR (findable, accessible, interoperable, and reusable) data management in the Horizon H2020, following the general rules issued in the Grant Agreement, the Consortium Agreement and the deliverable D12.2. It provides information on the purpose, types, formats, and origin of research data that will be collected, processed, or generated during the execution of this project. It defines standards for data provision and creation, use of keywords and persistent identifiers, naming conventions and clear versioning. It also covers resources allocated, data security and ethical aspects. This plan will specify what data will be open, detailing what data is being generated by the project, whether and how it will be exploited or made accessible for verification and reuse and how it will be curated and preserved. This is the first version of the DMP but will be reviewed at every six-month project meeting to enable widest possible oversight by the consortium.
The 450 days X-ray monitoring of the changing-look AGN 1ES 1927+654
Creators: name: Ricci, C.
name: Loewenstein, M.
name: Kara, E.
name: Remillard, R.
name: Trakhtenbrot, B.
name: Arcavi, I.
name: Gendreau, K. C.
name: Arzoumanian, Z.
name: Fabian, A. C.
name: Li, R.
name: Ho, L. C.
name: MacLeod, C. L.
name: Cackett, E.
name: Altamirano, D.
name: Gandhi, P.
name: Kosec, P.
name: Pasham, D.
name: Steiner, J.
name: Chan, C. -H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: 1ES 1927+654 is a nearby active galactic nucleus (AGN) which underwent a changing-look event in early 2018, developing prominent broad Balmer lines which were absent in previous observations. We have followed up this object in the X-rays with an ongoing campaign that started in May 2018, and that includes 265 NICER (for a total of 678ks) and 14 Swift/XRT (26ks) observations, as well as three simultaneous XMM-Newton/NuSTAR (158/169 ks) exposures. In the X-rays, 1ES 1927+654 shows a behaviour unlike any previously known AGN. The source is extremely variable both in spectral shape and flux, and does not show any correlation between X-ray and UV flux on timescales of hours or weeks/months. After the outburst the power-law component almost completely disappeared, and the source showed an extremely soft continuum dominated by a blackbody component. The temperature of the blackbody increases with the luminosity, going from $kT\sim 80$eV (for a 0.3--2keV luminosity of $L_{0.3-2}\sim 10^{41.5}\rm\,erg\,s^{-1}$) to $\sim 200$eV (for $L_{0.3-2}\sim 10^{44}\rm\,erg\,s^{-1}$). The spectra show evidence of ionized outflows, and of a prominent feature at $\sim 1$keV, which can be reproduced by a broad emission line. The unique characteristics of 1ES 1927+654 in the X-ray band suggest that it belongs to a new type of changing-look AGN. Future X-ray surveys might detect several more objects with similar properties.
description: Accepted for publication in ApJS, 56 pages. The complete 114-pages manuscript will be available upon publication
Validity of the Rooted Staggered Determinant in the continuum limit
Creators: name: Hasenfratz, Anna
name: Hoffmann, Roland
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We investigate the continuum limit of the rooted staggered determinant in the 2-dimensional Schwinger model. We match both the unrooted and rooted staggered determinant with an overlap fermion determinant of two (one) flavors and a local pure gauge effective action by fitting the coefficients of the effective action and the mass of the overlap operator. The residue of this fit measures the difference of the staggered and overlap fermion actions. We show that this residue scales at least as O(a^2), implying that any difference, be it local or non-local, between the staggered and overlap actions becomes irrelevant in the continuum limit. This observation justifies the rooting procedure.
description: 12 pages, 8 figures, REVTeX4
Simultaneous X-ray/radio observations of Cir X-1
Creators: name: Soleri, Paolo
name: Tudose, Valeriu
name: Fender, Rob
name: van der Klis, Michiel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analysed simultaneous X-ray/radio observations of Circinus X-1 collected respectively with RXTE and ATCA in 2000 October and 2002 December and identified radio flares close to phase 0.0 and 0.5 of the orbital period. To date, there is only circumstantial evidence for radio flares near phase 0.5. Moreover, in our data set, we clearly associated both a radio flare and X-ray spectral timing changes with phase 0.0. While for black hole X-ray binaries the picture of the association between the X-ray and the radio bands is quite well understood, for neutron star X-ray binaries a clear and complete picture is still missing.
description: 8 pages, 5 figures; to be published in proceedings of "Bursts, Pulses and Flickering: Wide-field Monitoring of the Dynamic Radio Sky", 12-15 June 2007, Kerastari, Greece (T.J. Lazio, R. Fender, A.K. Tzioumis, eds.)
Η επίδραση της φυσικής δραστηριότητας στην αρτηριακή σκληρία υγειών αρρένων νεαρής ηλικίας
Creators: name: Παπαδόπουλος, Ιωάννης Σπυρίδωνος
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Άσκηση
Αρτηριακή σκληρία
Ταχύτητα σφυμικού κύματος
Exercise
Arterial stiffness
Pulse wave velocity

description: Στην παρούσα μελέτη παρατηρήθηκε η επίδραση τριών παραγόντων (κάπνισμα, χρήση συμπληρωμάτων διατροφής, αθλητικό υπόβαθρο) στην αρτηριακή σκληρία και την αερόβια ικανότητα 41 νέων υγιών αρρένων. Εν συνεχεία καταγράφηκαν τυχόν μεταβολές της αρτηριακής σκληρίας και της αερόβιας ικανότητας μετά από μικτού τύπου άσκηση διάρκειας 4 εβδομάδων, τόσο στο σύνολο των ατόμων όσο και στις υποομάδες που ορίστηκαν ανάλογα με τις πρότερες καθημερινές συνήθειες. Για τον υπολογισμό της αρτηριακής σκληρίας χρησιμοποιήθηκε η καρωτηδo-μηριαία PWV (Pulse Wave Velocity). Η αρτηριακή σκληρία στην πρώτη μέτρηση δεν φάνηκε να έχει στατιστικά σημαντική διαφορά σε καπνιστές και μη, χρήστες ή μη και καλύτερα προπονημένους ή όχι τόσο. Τόσο για τις επιμέρους υποομάδες όσο και για το σύνολο των αθλητών, η αρτηριακή σκληρία μετά από 4 εβδομάδες μικτού τύπου άσκησης βρέθηκε ότι έχει μια ήπια επιδείνωση χωρίς στατιστικά σημαντική διαφορά ανάμεσα στις 2 μετρήσεις. Από την άλλη η αερόβια ικανότητα βρέθηκε ότι στα άτομα που έκαναν χρήση συμπληρωμάτων διατροφής ήταν στατιστικά καλύτερη σε σχέση με τα άτομα που δεν έκαναν χρήση. Στο σύνολο των ατόμων παρατηρήθηκε ήπια αλλά όχι στατιστκά σημαντική βελτίωση της αερόβιας ικανότητας μετά απο τις 4 εβδομάδες άσκησης, ενώ στη μόνη ομάδα που παρατηρήθηκε στατιστικά σημαντική διαφορά στην αερόβια ικάνότητα μεταξύ πρώτης και δεύτερης μέτρησης ήταν αυτή των μη καπνιστών
description: At this study, we examined the effect of three different factors (smoking, use of dietary supplements, athletic background) on the arterial stiffness and aerobic capacity of 41 healthy young men. Also, we recorded possible variances of arterial stiffness and aerobic capacity after 4 weeks of mixed exercise (endurance and resistance), on the whole group of subjects and on the subgroups , that were defined according to their former everyday habits. We used carotid-femoral pulse wave velocity to measure the arterial stiffness. The first time we measured the arterial stiffness, there was no significant difference between smokers or not, users of supplements or not, and better trained guys or not. For all the subjects, but for the subgroups as well, the arterial stiffness after 4 weeks of mixed exercise, had a slight deterioration, but not statistically significant, between the 2 measurements. On the other hand , the aerobic capacity of the subjects that involved supplements at their dietary habits, was statistically better in relation to the guys that did not have that kind of habits. At the whole group of subjects, there was a slight but not statistically important improvement of the aerobic capacity after 4 weeks of exercise, and the only subgroup with statistically important difference between the two measurements was the subgroup of non-smokers
D12.1 Data Management Plan
Creators: name: Knicker, Heike
name: Parry, Huw
Publisher: name: SteamBioAfrica
Year: 2024
Subjects: Data Management Plan

description: This Data Management Plan (DMP) is based upon the H2020 guidelines on FAIR (findable, accessible, interoperable, and reusable) data management in the Horizon H2020, following the general rules issued in the Grant Agreement, the Consortium Agreement and the deliverable D12.2. It provides information on the purpose, types, formats, and origin of research data that will be collected, processed, or generated during the execution of this project. It defines standards for data provision and creation, use of keywords and persistent identifiers, naming conventions and clear versioning. It also covers resources allocated, data security and ethical aspects. This plan will specify what data will be open, detailing what data is being generated by the project, whether and how it will be exploited or made accessible for verification and reuse and how it will be curated and preserved. This is the – final version of the DMP, which has been regularly reviewed and updated to enable widest possible oversight by the consortium.
Tidal Circularization of Binaries by Resonance Locking I: The Importance of the Pre-Main-Sequence
Creators: name: Zanazzi, J. J.
name: Wu, Yanqin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Although tidal dissipation in binary stars has been studied for over a century, theoretical predictions have yet to match the observed properties of binary populations. This work quantitatively examines the recent proposal of tidal circularization by resonance locking, where tidal dissipation arises from resonances between the star's natural oscillation frequencies and harmonics of the orbital frequency, and where resonances are `locked' for an extended period of time due to concurrent stellar evolution. We focus on tidal resonances with axi-symmetric gravity-modes, and examine binaries with primary masses from one to two solar masses. We find that orbital evolution via resonance locking occurs primarily during the star's pre-main-sequence phase, with the main-sequence phase contributing negligibly. Resonance locking, ignoring non-linearity, can circularize binaries with peri-centre distances out to $\sim 10$ stellar radii, corresponding to circular periods of $\sim 4-6$ days. However, we find resonantly excited gravity-modes will become nonlinear in stellar cores, which prevents them from reaching their full, linear amplitudes. We estimate that such a `saturated resonance lock' reduces the circularization period by about a third, but resonance locking remains much more effective than the cumulative actions of equilibrium tides. In a companion paper, we examine recent binary data to compare against theory.
description: 18 pages (30 incl. appendices & refs), 12 figures, resubmitted to ApJ after referee comments
A mathematical model for the therapy of the HIV infection
Creators: name: Della Rocca, G.
name: Sammartino, M.
name: Seta, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: In this paper we consider the evolution of the HIV infection under a highly effective treatment based on a combination of RTI and/or PI drugs. This is usually modelled with a set of ODEs where the drug efficacy is a constant. In this paper we consider the treatment efficacy as a dynamic variable which evolves during the treatment. To model the dynamics of the drug efficacy we use an evolutive type assumption. The resulting set of ODEs are able to reproduce the typical pattern of the illness evolution under treatment: a period of remission, which can last several years, followed by a progressive recrudescence and a viral rebound.
description: 13 pages, 7 figures
D12.1 Data Management Plan
Creators: name: Knicker, Heike
name: Parry, Huw
Publisher: name: SteamBioAfrica
Year: 2023
Subjects: Data Management Plan

description: This Data Management Plan (DMP) is based upon the H2020 guidelines on FAIR (findable, accessible, interoperable, and reusable) data management in the Horizon H2020, following the general rules issued in the Grant Agreement, the Consortium Agreement and the deliverable D12.2. It provides information on the purpose, types, formats, and origin of research data that will be collected, processed, or generated during the execution of this project. It defines standards for data provision and creation, use of keywords and persistent identifiers, naming conventions and clear versioning. It also covers resources allocated, data security and ethical aspects. This plan will specify what data will be open, detailing what data is being generated by the project, whether and how it will be exploited or made accessible for verification and reuse and how it will be curated and preserved. This is the – second updated version of the DMP, which will be reviewed at every six-month project meeting to enable widest possible oversight by the consortium. Up to now no changes were implemented or requested during the past consortium meetings.
Ecological Relevance and Physical Morphology of Green Algae, Spirogyra sp. in Northern Thailand
Creators: name: Pheravut Wongsawad
name: Yuwadee Peerapornpisal
Publisher: name: Yala Rajabhat University
Year: 2013
Subjects: Ecological relevance, Physical morphology, Spirogyra sp.

description: 1, 8, Journal of Yala Rajabhat University
Two-dimensional MHD simulations of relativistic magnetic reconnection
Creators: name: Watanabe, Naoyuki
name: Yokoyama, Takaaki
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It has been recognized that magnetic reconnection process is of great importance in high-energy astrophysics. We develop a new two-dimensional relativistic resistive magnetohydrodynamic (R$^2$MHD) code, and carry out numerical simulations of magnetic reconnection. We find that outflow velocity reaches Alfvén velocity in the inflow region, and that higher Alfvén velocity provides higher reconnection rate. We also find Lorentz contraction plays an important role in enhancement of reconnection rate.
description: 11 pages, 4 figures, accepted by ApJL