cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Χάλκινα κοσμήματα αρχαϊκών χρόνων από τη Μακεδονία: έρευνα στα χάλκινα κοσμήματα των νεκροταφείων της Αγίας Παρασκευής και της Νέας Φιλαδέλφειας
Creators: name: Μισαηλίδου-Δεσποτίδου, Βάσω,
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Μακεδονικά κοσμήματα
Χάλκινα κοσμήματα
Αρχαϊκά κοσμήματα
Macedonian jewellery
Bronze jewellery
Archaic jewellery

description: Η μελέτη αυτή περιλαμβάνει ένα σύνολο 917 χάλκινων κοσμημάτων της Μέσης και Υστερης Αρχαϊκής Εποχής που προέρχονται από τα νεκροταφεία της Αγίας Παρασκευής και της Νέας Φιλαδέλφειας. Τα νεκροταφεία αυτά ανήκουν σε δυο οικισμούς που εντάσσονταν το πρώτο στην αρχαία Μυγδονιά και το δεύτερο στον Ανθεμούντα και τα οποία βρίσκονταν κοντά στη Θεσσαλονίκη, σε μικρή απόσταση από το Θερμαϊκό κόλπο. Τα κοσμήματα ήταν κυρίως ενώτια, περίαπτα, ψήφοι, περόνες και πόρπες,ψέλια και δακτυλίδια. Ο μεγάλος αριθμός τους επέτρεψε να γίνουν παρατηρήσεις σχετικά με την καταγωγή, τη διάδοση και τη χρονολόγηση των αρχαϊκών κοσμημάτων στη Μακεδονία, ένα πεδίο έρευνας που δεν είχε μέχρι τώρα συστηματικά μελετηθεί. Οπως προκύπτει από την παρούσα μελέτη, τα κοσμήματα της Μέσης και Υστερης Αρχαϊκής Εποχής από το Μακεδονικό χώρο διακρίνονταν άλλοτε για την απλότητά τους και άλλοτε για την πλαστικότητα και διακοσμητικό χαρακτήρα τους. Σχεδόν σε κάθε είδος κοσμήματος διαπιστώθηκαν χαρακτηριστικά συνδεδεμένα με την παράδοση της εποχής Σιδήρου στη Μακεδονία και άλλα που επηρεάσθηκαν από τις καλλιτεχνικές τάσεις που επικρατούσαν στη νοτιότερη Ελλάδα και οποίες έγιναν δημοφιλείς στη Μακεδονία λόγω της ιδιαίτερης αύξησης των επαφών του βόρειου με το νότιο Αιγαίο στις πρώτες δεκαετίες του 6ου αι. π.χ.
description: This study deals with 917 bronze jewels of the Ripe and Late Arxhaic Period which come from the cemeteries of Aghia Paraskevi and Nea Philadelpheia. These cemeteries belonged to two settlements which were located in the vinicity of Thessaloniki at a short distance from Thermaikos gulf, the first in the area of ancient Mygdonia, the second in Anthemous. The great number of these items contributed to research of the origin, the diffusion and the chronology of the archaic jewellery in Macedonia, a field of research not yet fully carried out. As shown in this study, the jewellery of the Ripe and late Archaic Period in the Macedonian area is distinquished at times for its simplicity and its volume and in other cases for its plasticity and decorative character. Nearly in every kind of jewellery there features connected with the tradition of Ivon Age in Macedonia and others influenced by the cultural trends prevailing in Southern Greece. These trends became widely popular in Macedonia during the first decades of the 6th century B.C. thanks to the enormous increase in the communion between people of the north and south Aegean Sea.
Axisymmetric dynamo action produced by differential rotation, with anisotropic electrical conductivity and anisotropic magnetic permeability
Creators: name: Plunian, Franck
name: Alboussière, Thierry
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The effect on dynamo action of an anisotropic electrical conductivity conjugated to an anisotropic magnetic permeability is considered. Not only is the dynamo fully axisymmetric, but it requires only a simple differential rotation, which twice challenges the well-established dynamo theory. Stability analysis is conducted entirely analytically, leading to an explicit expression of the dynamo threshold. The results show a competition between the anisotropy of electrical conductivity and that of magnetic permeability, the dynamo effect becoming impossible if the two anisotropies are identical. For isotropic electrical conductivity, Cowling's neutral point argument does imply the absence of an azimuthal component of current density, but does not prevent the dynamo effect as long as the magnetic permeability is anisotropic.
description: 19 pages, 6 figures
Superstability of Surface Nanobubbles
Creators: name: Borkent, Bram M.
name: Dammer, Stephan M.
name: Schoenherr, Holger
name: Vancso, G. Julius
name: Lohse, Detlef
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Shock wave induced cavitation experiments and atomic force microscopy measurements of flat polyamide and hydrophobized silicon surfaces immersed in water are performed. It is shown that surface nanobubbles, present on these surfaces, do not act as nucleation sites for cavitation bubbles, in contrast to the expectation. This implies that surface nanobubbles are not just stable under ambient conditions but also under enormous reduction of the liquid pressure down to −6MPa. We denote this feature as superstability.
description: 5 pages, 2 figures
title: Bildraum und Ausstellungsraum. Reenactment und Immersion?
Creators: name: Koppermann, Ulrike
Publisher: name: ZZF - Centre for Contemporary History: Visual History
Year: 2021

description: Es sind ethische, nicht historische oder ästhetische Fragen, mit denen die Dokumentarfotografin Janina Struk in den letzten Absätzen ihrer Studie „Photographing the Holocaust“ die Leser*innen konfrontiert. Sie gibt zu bedenken, ob nicht die heutige Verwendung der von Tätern gemachten Fotos einer konspirativen Demütigung der fotografierten Opfer gleichkäme und die abgebildeten Leidensmomente aktiv fortsetze und wiederhole, während Millionen Besucher*innen dabei zusehen.
Structure and dielectric response in the high $T_c$ ferroelectric Bi(Zn,Ti)O$_3$-PbTiO$_3$ solid solutions
Creators: name: Grinberg, Ilya
name: Suchomel, Matthew R.
name: Dmowski, Wojtek
name: Mason, Sara E.
name: Wu, Hui
name: Davies, Peter K.
name: Rappe, Andrew M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Theoretical {\em ab initio} and experimental methods were used to investigate the $x$Bi(Zn,Ti)O$_3$-(1-$x$)PbTiO$_3$ (BZT-PT) solid solution. We find that hybridization between Zn 4$p$ and O 2$p$ orbitals allows the formation of short, covalent Zn-O bonds, enabling favorable coupling between A-site and B-site displacements. This leads to large polarization, strong tetragonality and an elevated ferroelectric to paraelectric phase transition temperature. nhomogeneities in local structure near the 90$^\circ$ domain boundaries can be deduced from the asymetric peak broadening in the neutron and x-ray diffraction spectra. These extrinsic effects make the ferroelectric to paraelectric phase transition diffuse in BZT-PT solid solutions.
Parabolic curves for diffeomorphisms in (C^2,0)
Creators: name: Martinez, F. E Brochero
name: Cano, F.
name: Hernanz, L. Lopez
Publisher: name: arXiv
Year: 2006
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32H02, 32H50, 37F99

description: We give a simple proof of existence of parabolic curves for tangent to the identity diffeomorphisms in (C^2,0) with isolated fixed point.
description: 4 pages
Different Power-law Indices in the Frequency Distributions of Flares with and without Coronal Mass Ejections
Creators: name: Yashiro, S.
name: Akiyama, S.
name: Gopalswamy, N.
name: Howard, R. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigated the frequency distributions of flares with and without coronal mass ejections (CMEs) as a function of flare parameters (peak flux, fluence, and duration of soft X-ray flares). We used CMEs observed by the Large Angle and Spectrometric Coronagraph (LASCO) on board the Solar and Heliospheric Observatory (SOHO) mission and soft X-ray flares (C3.2 and above) observed by the GOES satellites during 1996 to 2005. We found that the distributions obey a power-law of the form: dN/dX~X^-alpha, where X is a flare parameter and dN is the number of events recorded within the interval [X, X+dX]. For the flares with (without) CMEs, we obtained the power-law index alpha=1.98+-0.05 (alpha=2.52+-0.03) for the peak flux, alpha=1.79+-0.05 (alpha=2.47+-0.11) for the fluence, and alpha=2.49+-0.11 (alpha=3.22+-0.15) for the duration. The power-law indices for flares without CMEs are steeper than those for flares with CMEs. The larger power-law index for flares without CMEs supports the possibility that nanoflares contribute to coronal heating.
description: 4 pages, 2 figures embedded, accepted for publication in ApJL
Kinetic Investigation of Polyurethane Rubber Formation from CO2‐Containing Polyols
Creators: name: Buchner, Georg A.
name: Rudolph, Maik
name: Norwig, Jochen
name: Marker, Volker
name: Gürtler, Christoph
name: Schomäcker, Reinhard
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: CO2 utilization
subject: differential scanning calorimetry
subject: kinetics
subject: polyurethanes
subject: rubbers

description: A novel CO2 utilization technology allows for the inclusion of CO2 as carbonate units and double bond moieties to give additional functionality in polyether polyols. This study examines the chain‐elongation kinetics of these diols with diisocyanates to polyurethane rubbers by means of thermal analysis. A reaction order of 1 indicates a strong influence of the chains' mobility on the reaction rate. Spectrometry and comparison with non‐double‐bond polyols reveal that the effect cannot be attributed to a substantial occurrence of side reactions but is rather due to the intertwining of lengthy chains.
A Putative Early-Type Host Galaxy for GRB 060502B: Implications for the Progenitors of Short-Duration Hard-Spectrum Bursts
Creators: name: Bloom, J. S.
name: Perley, D. A.
name: Chen, H. -W.
name: Butler, N.
name: Prochaska, J. X.
name: Kocevski, D.
name: Blake, C. H.
name: Szentgyorgyi, A.
name: Falco, E. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Starting with the first detection of an afterglow from a short-duration hard-spectrum gamma-ray burst (SHB) by Swift last year, a growing body of evidence has suggested that SHBs are associated with an older and lower-redshift galactic population than long-soft GRBs and, in a few cases, with large (>~ 10 kpc) projected offsets from the centers of their putative host galaxies. Here we present observations of the field of GRB 060502B, a SHB detected by Swift and localized by the X-ray Telescope (XRT). We find a massive red galaxy at a redshift of z=0.287 at an angular distance of 17.1 arcsec from our revised XRT position. Using associative and probabilistic arguments we suggest that this galaxy hosted the progenitor of GRB 060502B. If true, this offset would correspond to a physical displacement of 73 +- 19 kpc in projection, about twice the largest offset inferred for any SHB to date and almost an order of magnitude larger than a typical long-soft burst offset. Spectra and modeling of the star-formation history of this possible host show it to have undergone a large ancient starburst. If the progenitor of GRB 060502B was formed in this starburst episode, the time of the GRB explosion since birth is tau = 1.3 +- 0.2 Gyr and the minimum kick velocity of the SHB progenitor is v_kick = 55 +- 15 km/s.
description: Accepted to the Astrophysical Journal. 18 pages, 3 figures; expanded discussion of alternative host possibilities
Additional file 7 of MYSM1 inhibits human colorectal cancer tumorigenesis by activating miR-200 family members/CDH1 and blocking PI3K/AKT signaling
Creators: name: Chen, Xu
name: Wang, Wei
name: Li, Yufang
name: Huo, Yi
name: Zhang, Han
name: Feng, Fan
name: Xi, Wenjin
name: Zhang, Tianze
name: Gao, Jinjian
name: Yang, Fan
name: Chen, Siyi
name: Yang, Angang
name: Wang, Tao
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 7: Table S7. Primer sequences for the miR-200 family members/CDH1 in ChIP assay.
Error Exponent in Asymmetric Quantum Hypothesis Testing and Its Application to Classical-Quantum Channel coding
Creators: name: Hayashi, Masahito
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the simple quantum hypothesis testing problem, upper bound with asymmetric setting is shown by using a quite useful inequality by Audenaert et al, quant-ph/0610027, which was originally invented for symmetric setting. Using this upper bound, we obtain the Hoeffding bound, which are identical with the classical counter part if the hypotheses, composed of two density operators, are mutually commutative. Our upper bound improves the bound by Ogawa-Hayashi, and also provides a simpler proof of the direct part of the quantum Stein's lemma. Further, using this bound, we obtain a better exponential upper bound of the average error probability of classical-quantum channel coding.
Symmorphic and nonsymmorphic symmetries jointly-protected hourglass phonons
Creators: name: Zheng, Baobing
name: Zhan, Fangyang
name: Wu, Xiaozhi
name: Wang, Rui
name: Fan, Jing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Hourglass dispersion is generally believed to be solely protected by nonsymmorphic symmetries, because these symmetries can introduce high-dimensional projective representations. Here, based on symmetry arguments, we propose that the hourglass dispersion can be jointly protected by symmorphic and nonsymmorphic symmetries, instead of the only conventional nonsymmorphic symmetry. Moreover, using first-principles calculations, we realize our proposal in phonon spectra of realistic materials that share an antiperovskite structure with space group \emph{P}4/\emph{nmm}. Importantly, the neck points of these hourglass dispersions trace out two nodal rings tangent to four nodal lines, forming a unique hourglass nodal cage in the bulk Brillouin zone. The Berry phase analysis reveal the nontrivial topology of these nodal rings and nodal lines. Furthermore, the nontrivial surface states and isofrequency surface arcs are visible, facilitating their experimental confirmation of such exotic quasiparticles. Our work not only offers a new insight into the hourglass dispersion, but also expands aspects for studying promising topological quasiparticles in condensed-matter systems.
description: 5 pages,4 figures
Ο Νικόλαος Μαλαξός και το υμνογραφικό του έργο
Creators: name: Στρατηγόπουλος, Δημοσθένης Ν.
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Υμνογραφία
Hymnography
Malaxos, Nikolaos

description: Ο Νικόλαος Μαλαξός πρωτοπαπάς Ναυπλίου, ήταν μια προσωπικότητα του 16ου αι. με πολλές ενασχολήσεις και πλούσιο έργο. Σκοπός της διατριβής μας είναι να παρουσιάσουμε μια συστηματική εργασία με το βίο του και τα έργα του, ιδιαίτερα τα υμνογραφικά που είναι και πλουσιότερα. Κατά τη διάρκεια της έρευνας μας μελετήσαμε τη σχετική βιβλιογραφία, έγγραφα, χειρόγραφα και παλαίτυπα. Η διατριβή μας διαιρείται σε δυο μέρη : στο Μέρος Α', όπου γίνεται παρουσίαση των βιογραφικών στοιχείων του συγγραφέα και της εποχής του, και στο Μέρος Β', όπου παρουσιάζεται "υμνογραφική του δραστηριότητα. Τη μελέτη μας συνοδεύει Επίμετρο, όπου παρουσιάζονται εξαντλητικά τα υπόλοιπα έργα του συγγραφέα. Τέλος, ακολουθούν τα Συμπεράσματα της έρευνάς μας και Πίνακες με φωτοτυπίες από δείγματα γραφής του Νικολάου Μαλαξού
description: Nikolaos Malaxos, protopapas of Nafplio, was a 16th century versatile figure with a rich work. The aim of the thesis is to present a systematic work related to his life and his works with a special focus on his rich hymnographical works. During our research we studied the relative bibliography, documents, manuscripts and incunabula. Our dissertation is divided in two parts : in Part A', where the writer's biographial elements and his era are presented and in Part B', where his rich hymnographical activity is presented. Our thesis is accompanied by an Addendum, where the rest of the writer's work is presented in detail. In the end, the research conclusions follow and Tables with copies from Malaxo's writing samples
Magnetized Kerr-Taub-NUT spacetime and Kerr/CFT correspondence
Creators: name: Siahaan, Haryanto M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a new solution in Einstein-Maxwell theory which can be considered as the magnetized version of Kerr-Taub-NUT solution. Some properties of the spacetime are discussed. We also compute the entropy of extremal black hole in the spacetime by using the Kerr/CFT correspondence approach.
description: 18 pages, 1 figure
Ο Στέφανος Ξένος(1821-1894) και ο Βρεττανικός Αστήρ
Creators: name: Χατζηγεωργίου-Χασιώτη, Βικτωρία
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Νεοελληνική λογοτεχνία

description: Εξετάζεται η ζωή και οι συγγραφικές επιδόσεις του Στεφάνου Ξένου με βάση το έργο του και τις δημοσιευμένες και ανέκδοτες ελληνικές και δυτικές πηγές, τόσο κατά την παραμονή του στη Μ. Βρετανία(1847-1877) όσο και μετά την εγκατάστασή του στην Ελλάδα(1877-1894). Ιδιαίτερη έμφαση δίδεται στο συγγραφικό του έργο, τόσο στον τομέα της λογοτεχνίας όσο και στον χώρο της δημοσιογραφίας και της πολιτικής και κοινωνικής κριτικής. Σε χωριστό τμήμα παρουσιάζεται η ίδρυση και η σταδιοδρομία του Βρεττανικού Αστέρος, της εφημερίδας που ο Ξένος εξέδιδε αρχικά(1860-1862) στο Λονδίνο και στη συνέχεια(1891-1892) στην Αθήνα. Η εργασία συνοδεύεται από κατάλογο των έργων και των κυριότερων δημοσιευμάτων του Ξένου, καθώς επίσης και από καταγραφή των πηγών και της βιβλιογραφίας που χρησιμοποιήθηκε
description: Stephanos Xeno's life and writings are studied on the basis of his work and published und unpublished Great Britain(1847-1877) or his life in Greece(1877-1894). A special emphasis is given to his writings in the area of literature. Journalism and political and social criticism is studied, as well. In a special part of the book the foundation and career of the British Star, the journal Xenos published initially(1860-1862) in London and later(1891-1892) in Athens is also presented. The study is accompanied by a list of Xeno's literary works and his important publications, along with an table of the used sources and bibliography
Fluctuation theorem for the renormalized entropy change in the strongly nonlinear nonequilibrium regime
Creators: name: Sughiyama, Yuki
name: Abe, Sumiyoshi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Generalizing a recent work [T. Taniguchi and E. G. D. Cohen, J. Stat. Phys. 126, 1 (2006)] that was based on the Onsager-Machlup theory, a nonlinear relaxation process is considered for a macroscopic thermodynamic quantity. It is found that the fluctuation theorem holds in the nonlinear nonequilibrium regime if the change of the entropy characterized by local equilibria is appropriately renormalized. The fluctuation theorem for the ordinary entropy change is recovered in the linear near-equilibrium case. This result suggests a possibility that the the information-theoretic entropy of the Shannon form may be modified in the strongly nonlinear nonequilibrium regime.
description: 14 pages, no figures. Typos corrected
Τα ρομανικά (ιταλικά-γαλλικά) δάνεια στο σύγχρονο ιδίωμα της Ζακύνθου: λεξικολογικές επισημάνσεις(μορφολογία-σημασιολογία)
Creators: name: Κοροσίδου-Καρρά, Ερμιόνη
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Δάνειες λέξεις
Γλωσσικός δανεισμός
Loan words
Linguistic words

description: Σκοπός της παρούσας εργασίας είναι η παρουσίαση των αποτελεσμάτων μιας έρευνας κατά το δυνατόν σε βάθος της γλωσσικής επίδρασης(βενετσιάνικης, ιταλικής και γαλλικής) που δέχτηκε το ιδίωμα της Ζακύνθου. Το φαινόμενο του γλωσσικού δανεισμού και η ένταξη των δάνειων λέξεων στο Ζακυνθινό ιδίωμα, εξετάζονται με διαχρονικά και συγχρονικά κριτήρια στο πλαίσιο της Ιστορικοσυγκριτικής γλωσσολογίας, Κοινωνιογλωσσολογίας και Διαλεκτικής. Ειδικότερα μελετήσαμε το βαθμό αφομοίωσης και προσαρμογής των γλωσσικών δανείων στο μορφολογικό και σημασιολογικό σύστημα του ιδιώματος. Οσον αφορά την μορφολογία διαπιστώσαμε ότι οι δάνειες λέξεις κατά κανόνα προσαρμόζονται στο μορφολογικό σύστημα του ιδιώματος με ελάχιστες εξαιρέσεις. Στον τομέα της σημασιολογίας οι δάνειες λέξεις διατηρούν την αρχική τους σημασία και μετά την ενσωμάτωσή τους στο ιδίωμα. Ελάχιστες είναι οι αλλοιώσεις και οι αποκλίσεις από την αρχική τους σημασία. Η πληθώρα των δάνειων λέξεων στο λεξιλόγιο της Ζακύνθου εμπλουτίζει και ανανεώνει το τοπικό ιδίωμα. Εκφράζει επίσης την πολιτιστική πολυμορφία και καθορίζει την ιδιαίτερη ταυτότητα του νησιού
description: This thesis is intended to present the results of a research into the influence of the Venetian, Italian and French Languages upon the idion of Zacynthos. The phenomenon of linguistic borrowing and the integration of loan words in the idiom of Zacynthos, are examined on the basis of both diachronistic and synchronistic criteria in the framework of Historical-Comparative, we examined the degree to which loan shifts have been assimilated by and adapted to the morphological and semantical system of the idiom in question. With concern to the morphology, we found out that, as a rule, loan words adapt to the morphological system of the idiom, with very few exceptions. As regards semantics, loan words retain their original meaning after their integration in the idiom, with very few alterations of their original meaning or deviations it. The multitude of loan words integrated in the vocabulary of Zacynthos enriches and renews the local idiom and is part of the tradition, civilization and self-expression of the island. It also denotes(shows) the cultural multiformity and determines the particular identity of Zacynthos
Heavy tetraquarks in the relativistic quark model
Creators: name: Faustov, R. N.
name: Galkin, V. O.
name: Savchenko, E. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We give a review of the calculations of the masses of tetraquarks with two and four heavy quarks in the framework of the relativistic quark model based on the quasipotential approach and QCD. The diquark-antidiquark picture of heavy tetraquarks is used. The quasipotentials of the quark-quark and diquark-antidiquark interactions are constructed similarly to the previous consideration of mesons and baryons. Diquarks are considered in the colour triplet state. It is assumed that the diquark and antidiquark interact in the tetraquark as a whole and the internal structure of the diquarks is taken into account by the calculated form factor of the diquark-gluon interaction. All parameters of the model are kept fixed from our previous calculations of meson and baryon properties. A detailed comparison of the obtained predictions for heavy tetraquark masses with available experimental data is given. Many candidates for tetraquarks are found. It is argued that the structures in the di-$J/ψ$ mass spectrum observed recently by the LHCb Collaboration can be interpreted as $cc\bar c\bar c$ tetraquarks.
description: 25 pages, 1 figure, talk at the XXXII International Workshop on High Energy Physics "Hot problems of Strong Interactions" November 9-13, 2020, based on arXiv:0706.3853, arXiv:0808.3912, arXiv:0812.3477, arXiv:2009.13237; v2: published version, references added, note on new LHCb data (arXiv:2103.01803) added
Long distance contributions to the eta_b => Jpsi Jpsi decay
Creators: name: Santorelli, Pietro
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: It was argued long ago that eta_b could be observed through the eta_b => Jpsi(=> mu+ mu-) Jpsi(=> mu+ mu-) decay chain. Recent calculations indicate that the width of eta_b into two Jpsi is almost 3 orders of magnitude smaller than the one into the D bar D*. We study the effects of final-state interactions due to the D bar D* intermediate state on the Jpsi Jpsi final state. We find that the inclusion of this contribution may enhance the short-distance branching ratio up to about 2 orders of magnitude.
description: 4 pages, 3 figures. The estimate of the dispersive contribution was added. Typos corrected. To be published in Phys. Rev. D
Neutral Evolution as Diffusion in phenotype space: reproduction with mutation but without selection
Creators: name: Lawson, Daniel John
name: Jensen, Henrik Jeldtoft
Publisher: name: arXiv
Year: 2006
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: The process of `Evolutionary Diffusion', i.e. reproduction with local mutation but without selection in a biological population, resembles standard Diffusion in many ways. However, Evolutionary Diffusion allows the formation of local peaks with a characteristic width that undergo drift, even in the infinite population limit. We analytically calculate the mean peak width and the effective random walk step size, and obtain the distribution of the peak width which has a power law tail. We find that independent local mutations act as a diffusion of interacting particles with increased stepsize.
description: 4 pages, 2 figures. Paper now representative of published article
Integration of manufacturing process control and optimization with a general purpose multi-processor controller
Creators: name: Ardekani, Ramin
Publisher: name: University of British Columbia
Year: 2008

description: The objective of this thesis is to demonstrate the importance of control software and hardware design in economic optimization of a production process. It is proposed that the improvement in production economics depends on the system's ability to meet the needs of a process model formulated from a sound understanding of the process. To illustrate these concepts, an NC lathe machining language is created to exploit the UBC Controller's ability for reducing production cost, ensuring part quality and improving machining safety, all based on the guidelines from a practical process model. The language uses a feature based approach to part geometry definition which simplifies data entry and operation planning. The tool path is automatically generated for volume primitives and sent to the controller with process control information. Unlike other systems, which are restricted by the traditional NC code block format in communicating process information to the controller, the process data can be made to correspond with small motion increments and help the controller cope with the expected variations in cutting conditions due to the cut geometry. Experiments with a force monitoring scheme demonstrate how a simple algorithm can keep the force within the prescribed limits for machining safety and product quality. Implementation of a rudimentary process identification and optimization scheme shows the system's ability to reduce machining cost while observing the practical constraints. This low cost system is intended to allow smaller firms to benefit from the current level of process knowledge and production technology.
Learning-based WiFi Traffic Load Estimation in NR-U Systems
Creators: name: Yin, Rui
name: Zou, Zhiqun
name: Wu, Celimuge
name: Yuan, Jiantao
name: Chen, Xianfu
name: Yu, Guanding
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The unlicensed spectrum has been utilized to make up the shortage on frequency spectrum in new radio (NR) systems. To fully exploit the advantages brought by the unlicensed bands, one of the key issues is to guarantee the fair coexistence with WiFi systems. To reach this goal, timely and accurate estimation on the WiFi traffic loads is an important prerequisite. In this paper, a machine learning (ML) based method is proposed to detect the number of WiFi users on the unlicensed bands. An unsupervised Neural Network (NN) structure is applied to filter the detected transmission collision probability on the unlicensed spectrum, which enables the NR users to precisely rectify the measurement error and estimate the number of active WiFi users. Moreover, NN is trained online and the related parameters and learning rate of NN are jointly optimized to estimate the number of WiFi users adaptively with high accuracy. Simulation results demonstrate that compared with the conventional Kalman Filter based detection mechanism, the proposed approach has lower complexity and can achieve a more stable and accurate estimation.
Η χρήση του μυθολογικού παραδείγματος στις Ωδές του Ορατίου
Creators: name: Οικονόμου, Ιωάννης Σταύρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Παράδειγμα
Paradigm or Example

description: Σύντομη αναφορά στον ποιητή και το έργο του. Μυθολογικό παράδειγμα στις ωδές με στόχο την επίδραση που άσκησαν στη χρήση του οι Ελληνιστικές πηγές και οι τροποποιήσεις που επέφερε ο Οράτιος στο μύθο λόγω της επιρροής της θρησκείας και των φιλοσοφικών συστημάτων της εποχής του. Η έρευνα γίνεται με διαίρεση των εξεταζομένων ωδών σε κεφάλαια όπου στο καθένα εξετάζεται το μυθολογικό υλικό σε σχέση με τις περιστάσεις ή τα συναισθήματα που τον οδήγησαν στο γράψιμο της ωδής(επική και λυρική ποίηση, ερωτικές ωδές με μεταφυσικό χαρακτήρα, ωδές με ενθαρρυντικό ή συμβουλευτικό χαρακτήρα, περιγραφική ή συγκριτική χρήση, προσωπικές επιλογές του ποιητή)
description: A brief reference on the poet and his work. Mythological example to odes aiming in the influence exercised in its use by hellenistic models and the modifications effected by the poet on the myths themselves under the influence of contemporary religious and philosophical practice. The research is effected by division of examined odes in six chapters, in each section the mythological matter is treated in terms of circumstances or sentiments that leaded in the writing of a particular ode(epic and lyric poetry, amatory odes, odes that show the poet's disposition to contemplate on human life and its inescapable end for us all, odes with an encouraging or counceling character, odes whose the example has a descriptive or comparative use odes of personal nature
All-electrical Magnon Transport Experiments in Magnetically Ordered Insulators
Creators: name: Althammer, Matthias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Angular momentum transport is one of the cornerstones of spintronics. Spin angular momentum is not only transported by mobile charge carriers, but also by the quantized excitations of the magnetic lattice in magnetically ordered systems. In this regard, magnetically ordered insulators provide a platform for magnon spin transport experiments without additional contributions from spin currents carried by mobile electrons. In combination with charge-to-spin current conversion processes in conductors with finite spin-orbit coupling it is possible to realize all-electrical magnon transport schemes in thin film heterostructures. This review provides an insight into such experiments and recent breakthroughs achieved. Special attention is given to charge current based manipulation via an adjacent normal metal of magnon transport in magnetically ordered insulators in terms of spin-transfer torque. Moreover, the influence of two magnon modes with opposite spin in antiferromagnetic insulators on all-electrical magnon transport experiments is discussed.
description: If you have suggestions or ideas to improve this review, please contact me via email
Δημιουργία, χαρακτηρισμοί και έλεγχοι γενετικά τροποποιημένων φυτών
Creators: name: Καραβαγγέλη, Μαργαρίτα
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Γενετικά τροποποιημένα φυτά
Βιοβαλλιστική μέθοδος
Genetically modified
Biolistics
GM foods
PCR
GMO

description: Τα φυτά έχουν ευέλικτα συστήματα αποτοξίνωσης των κυττάρων τους από ξενοβιοτικές ουσίες, ένα από τα οποία είναι η σύνδεση με το τριπεπτίδιο γλουταθείο, στο οποίο εμπλέκεται και το ένζυμο μεταφοράση του γλουταθείου. Η δημιουργία διαγονιδιακών φυτών που φέρουν το γονίδιο gstI από το καλαμπόκι μπορεί να οδηγήσει στην κατανόηση αυτών των μηχανισμών. Η κατασκευή ενός δυαδικού φορέα για τη γενετική τροποποίηση είναι απαραίτητη γι'αυτό το σκοπό. Με τη βιοβαλλιστική μέθοδο δημιουργήθηκαν διαγονιδιακά φυτά καπνού με αντοχή στο ζιζανιοκτόνο alachlor και η μεταφορά γονιδίων σε έκφυτα πιπεριάς, τα οποία έδωσαν αναγέννηση. Η πιστοποίηση και ο έλεγχος της γενετικής τροποποίησης σε φυτά, σπόρους και προϊόντα που προέρχονται από αυτά(τρόφιμα). Η μέθοδος της PCR χρησιμοποιήθηκε για τον προσδιοριμό της γενετικής τροποποίησης σε φυτά καπνού και πιπεριάς, σπόρους βαμβακιού και καλαμποκιού και σε τρόφιμα από σόγια και καλαμπόκι
description: Plants have versatile detoxification systems to counter the phytotoxicity of natural and synthetic chemicals. One important detoxification mechanism is the chemical modification of the xenobiotic by linkage to the tripeptide glutathione. Glutathione S-transferase is part of this mechanism, while it seems to be involved in protection systems again environmental stresses. The creation of transgenic plants harboring the gstI gene could result in plants tolerant to the herbicide and assist in the understanding of the protection mechanisms. The first step is the construction of a binary vector with gstI and nptII genes. Through biolistics, transgenic tobacco plants expressing these two genes and tolerant to the herbicide alachlor were developed. Pepper explants were also bombarded through gene gun but the regenerated plants never radicated. The increasingly number of cultivated transgenic plants and their use into human nutrition address the need of the development of a reliable system of detection of GMOs The polymerase chain reaction(PCR) was used for the detection of the transgenes in cotton and corn and in foodstuffs from soya and corn. PCR is a reliable and efficient method for the qualitative analysis of GMOs, but the use of a combination of genetic elements for the amplification is essential
Ταυτοποίηση και χαρακτηρισμός των γονιδιακών προϊόντων του ανοικτού αναγνωστικού πλαισίου U86/87 του ανθρώπινου ερπητοϊού τύπου 6Α(Human herpesvirus 6A, HHV-6A)
Creators: name: Παπανικολάου, Ελένη Κ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: U90
U86/87
Ανθρώπινος κυτταρομεγαλοϊός
IE-A region
Human Citomegalovirus

description: Η πρώιμη περιοχή(ΙΕΑ) του HHV6 βρίσκεται σε ανάλογη θέση με την πρώιμη περιοχή(ΜΙΕ) του κυτταρομεγαλοϊού(HCMV). Οπως και στην ΜΙΕ περιοχή έτσι και στην ΙΕ-Α παράγονται δυο μεταγραφήματα τα ΙΕ1 και ΙΕ2 που κωδικοποιούνται από τα ανοιχτά αναγνωστικά πλαίσια U90-U89 και U90-U86/87 αντίστοιχα. Για να ανιχνεύσουμε τα γονιδιακά προϊόντα που προκύπτουν από το ΙΕ2 μεταγράφημα, κατασκευάσαμε μονοειδικά πολυκλωνικά αντισώματα εναντίον 4 υποπεριοχών του U86/87. Τα παραγόμενα αντισώματα χρησιμοποιήθηκαν για την ανίχνευση των γονιδιακών προϊόντων σε ανθρώπινα κύτταρα μολυσμένα με τον HHV6A 3 μέρες μετά την μόλυνση. Τα αποτελέσματα έδειξαν ότι στα μολυσμένα κύτταρα ανιχνεύονται 3 πολυπεπτίδια με ΜΒ100, 85, και 55KD. Τα αποτελέσματα αυτά συγκλίνουν ως προς την δημιουργία πολλών μεταγραφημάτων. Τα προϊόντα της ΙΕ2 περιοχής ανιχνεύονται και στον πυρήνα και στο κυτταρόπλασμα των μολυσμένων κυττάρων, ενώ η καρβοξυτελική περιοχή του ΙΕ2(μήκους 437 αα) έχει την δυνατότητα να συνδέεται σε ένα τμήμα του προαγωγέα ΙΕ-Α περιοχής
description: The human herpesvirus 6(HHV6) immediate early locus(IE-A) locates in the position analogous to the human Cytomegalovirus(HCMV) major IE(MIE) locus. Simirarly to the HCMV MIE, HHV6 IE-A consists of two transcripts IE1 and IE2 corresponding to open reading frames U90-U89 and U90-U86/87 respectively. To characterize HHV6 IE2 gene products polyclonal antibodies against. A domains of the U86/87 of were generated by immunization of rabbits with bacterially-expressed proteins. Three polypeptides were detected with apparent molecular weights of 100,85 and 55KD in HHV6 infected post infection. Mapping of the IE2 gene products with antibodies suggests differential splicing. The IE2 products show a mixed cytoplasmic and nuclear localization pattern. In addition the 437 a.a. carboxyl-terminus bound to a DNA fragment containing the putative IE-A promoter
Evolutionary Status of SNR 1987A at the Age of Eighteen
Creators: name: Park, Sangwook
name: Zhekov, Svetozar A.
name: Burrows, David N.
name: Garmire, Gordon P.
name: Racusin, Judith L.
name: McCray, Richard
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: $\sim$18 yr after the supernova explosion, the blast wave of SNR 1987A is entering the main body of the equatorial circumstellar material, which is causing a dramatic brightening of the remnant. We recently reported the observational evidence for this event from our {\it Chandra} data (Park et al. 2005b; P05 hereafter). We present here the temporal evolution of the X-ray emitting shock parameters and the detailed description of the spectral and image analysis of SNR 1987A, on which P05 was based. While the remnant becomes brighter, the softening of the overall X-ray spectrum continues and is enhanced on around day $\sim$6200 (since the explosion). The two-component shock model indicates that the electron temperatures have been changing for the last $\sim$6 yr. The X-ray spectrum is now described by $kT$ $\sim$ 0.3 keV and 2.3 keV thermal plasmas which are believed to characteristically represent the shock-heated density gradient along the boundary between the H{\small II} region and the dense inner ring. As the blast wave sweeps through the inner circumstellar ring shining in X-rays, we expect that the shock parameters continue to change, revealing the density and abundance structure of the inner ring. Follow-up {\it Chandra} observations will thus uncover the past history of the progenitor's stellar evolution. The origin of the relatively faint hard X-ray emission ($E$ $>$ 3 keV) from SNR 1987A is still unclear (thermal vs. nonthermal). Considering the continuous brightening of the hard band intensity, as well as the soft band flux, follow-up monitoring observations will also be essential to reveal the origin of the hard X-ray emission of SNR 1987A.
description: 21 pages including 9 figures, Accepted by ApJ
РАЗРАБОТКА И ИССЛЕДОВАНИЕ НОВЫХ МНОГОСЛОЙНЫХ ПОКРЫТИЙ AVINIT D НА ОСНОВЕ СИСТЕМ «МЕТАЛЛ-УГЛЕРОД»
Creators: name: Sagalovich, Alex
name: Sagalovich, Vlad
Publisher: name: figshare
Year: 2021
Subjects: subject: Aerospace Engineering
subject: FOS: Mechanical engineering
subject: 90102 Aerospace Materials

description: Разработаны новые процессы (PVD и гиб­ридные PVD+CVD) контролируемого формиро­вания многокомпонентных нано- и микро- структурных покрытий Avinit D в системах «металл-углерод» с применением вакуум-плаз- менных (PVD) и плазмохимических (CVD) про­цессов. Проведены металлографические иссле­дования полученных покрытий, подтверждаю­щие возможность низкотемпературного нане­сения качественных многокомпонентных мно­гослойных и нанослойных покрытий «металл- углерод» (МеС, Ме-С:Н, Me-C-N, МеС-С) (Ме= Ti, Mo). Трибологические испытания сви­детельствуют о перспективности разрабо­танных покрытий Avinit D для повышения износостойкости и снижения коэффициента трения скольжения пар трения прецизионных узлов агрегатостроения.
Additional file 8 of MYSM1 inhibits human colorectal cancer tumorigenesis by activating miR-200 family members/CDH1 and blocking PI3K/AKT signaling
Creators: name: Chen, Xu
name: Wang, Wei
name: Li, Yufang
name: Huo, Yi
name: Zhang, Han
name: Feng, Fan
name: Xi, Wenjin
name: Zhang, Tianze
name: Gao, Jinjian
name: Yang, Fan
name: Chen, Siyi
name: Yang, Angang
name: Wang, Tao
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 8: Table S8. Primers used for qRT-PCR analysis in this study.
Total Differential Errors in One-Port Network Analyzer Measurements with Application to Antenna Impedance
Creators: name: Yannopoulou, Nikolitsa
name: Zimourtopoulos, Petros
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The objective was to study uncertainty in antenna input impedance resulting from full one-port Vector Network Analyzer (VNA) measurements. The VNA process equation in the reflection coefficient p of a load, its measurement m and three errors Es -determinable from three standard loads and their measurements- was considered. Differentials were selected to represent measurement inaccuracies and load uncertainties (Differential Errors). The differential operator was applied on the process equation and the total differential error dp for any unknown load (Device Under Test DUT) was expressed in terms of dEs and dm, without any simplification. Consequently, the differential error of input impedance Z -or any other physical quantity differentiably dependent on p- is expressible. Furthermore, to express precisely a comparison relation between complex differential errors, the geometric Differential Error Region and its Differential Error Intervals were defined. Practical results are presented for an indoor UHF ground-plane antenna in contrast with a common 50 Ohm DC resistor inside an aluminum box. These two built, unshielded and shielded, DUTs were tested against frequency under different system configurations and measurement considerations. Intermediate results for Es and dEs characterize the measurement system itself. A number of calculations and illustrations demonstrate the application of the method.
description: 8 pages, 13 figures
Σύνθεση και χαρακτηρισμός ρητινών ουρίας-φορμαλδεϋδης
Creators: name: Μινοπούλου, Ελπίδα
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Μεθυλολίωση
Methylolation

description: Στην παρούσα διατριβή μελετήθηκε η επίδραση παραμέτρων σύνθεσης στη δομή και στις ιδιότητες ρητινών ουρίας-φορμαλδεϋδης(UF). Οι παράμετροι που εξετάστηκαν ήταν η θερμοκρασία, το PH και ο μοριακός λόγος φορμαλδεϋδης προς ουρία. Για τη διερεύνηση της δομής και των ιδιοτήτων των ρητινών UF χρησιμοποιήθηκαν φασματοσκοπικές τεχνικές 1H-NMR, 13C-NMR, FT-IR και FT-Raman, χρωματογραφικές μέθοδοι HPLC και GPC και μέθοδοι θερμικής ανάλυσης TGA και DSC. Η εφαρμογή της φασματοσκοπίας FT-NIR στην παρακολούθηση και τον έλεγχο της σύνθεσης ρητίνων UF σε πραγματικό χρόνο(on-line) αποτέλεσε βασικό καινοτόμο στοιχείο της διατριβής. Στο πρώτο στάδιο της μελέτης παρασκευάστηκαν πρότυπες ενώσεις ουρίας-φορμαλδεϋδης, ενώ στη συνέχεια εξετάστηκαν συνθέσεις ρητινών UF σε σταθερές συνθήκες θερμοκρασίας, PH και μοριακού λόγου. Παρασκευάστηκαν ρητίνες, βάσει βιομηχανικών προτύπων, σε μοριακούς λόγους από 1,10 έως 1,50, διατηρώντας σταθερό το PH στο στάδιο της μεθυλολίωσης(περιοχή PH από 8,5 έως 5,5) και τέλος πραγματοποιήθηκαν συνθέσεις UF με τελικό μοριακό λόγο 1,15 σε βιομηχανική κλίμακα σε συγκεκριμένη περιοχή pH μεθυλολίωσης(7,5-6,5) όπως προέκυψε από τα προηγούμενα στάδια μελέτης. Η μεθοδολογία παρακολούθησης NIR εφαρμόστηκε σε όλα τα στάδια της μελέτης για την αποτίμηση της προόδου των επιμέρους σταδίων των συνθέσεων
description: In the present work, the effect of pH, temperature and molar natio(f/u) on the structure of urea-formaldehyde(UF) resins was studied, Model UF compounds and adhesives were syntesized and measured at systematically varying temperature and pH conditions. Based on industrial know-how, UF resins were produced at molar natios F/U ranging from 1.10 to 1.50, keeping the pH during the methylolation stage constant(pH values from 8.5 to 5.5 were examined). Finally, resin synthesis was performed at industrial scale. UF resins with final molar ratios 1.15 were produced keeping the pH during methylolation between 7.5 and 6.5. The various reaction products were studied by GelPermeation Chromatography(EPC), high performance liquid chromatography(HPLC), 1H- and 13(-Nuclearmagnetic resonance(NMR)spectroscopy, FT-Raman spectroscopy, thermogravimetris analysis(TFA) and differential scanning calorimetry (DSC) to elucidate the structural characteristics of the resin systems. Fourier transform near infrared(FT-NIR) spectroscopy via optical fibre probes was used to monitor the reaction progress in situ. The interpretation of the NIR spectra was assisted by the reference structural information provided by the other analytical techniques
ELIXIR Italy Event - EOSC & ELIXIR Slides (Gavin Farrell - view point in 2024)
Creators: name: Farrell, Gavin
Publisher: name: Zenodo
Year: 2024

description: Slides presented at ELIXIR Italy event 20241004 on ELIXIR & EOSC. 2024 personal views and update by Gavin Farrell.
Optical properties of silicon carbide for astrophysical applications I. New laboratory infrared reflectance spectra and optical constants
Creators: name: Pitman, K. M.
name: Hofmeister, A. M.
name: Corman, A. B.
name: Speck, A. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Silicon Carbide (SiC) optical constants are fundamental inputs for radiative transfer models of astrophysical dust environments. However, previously published values contain errors and do not adequately represent the bulk physical properties of the cubic (beta) SiC polytype usually found around carbon stars. We provide new, uncompromised optical constants for beta- and alpha-SiC derived from single-crystal reflectance spectra and investigate quantitatively whether there is any difference between alpha- and beta-SiC that can be seen in infrared spectra and optical functions. Previous optical constants for SiC do not reflect the true bulk properties, and they are only valid for a narrow grain size range. The new optical constants presented here will allow narrow constraints to be placed on the grain size and shape distribution that dominate in astrophysical environments. In addition, our calculated absorption coefficients are much higher than laboratory measurements, which has an impact on the use of previous data to constrain abundances of these dust grains.
description: 12 pages; 10 figures; laboratory optical constants available from CDS. Accepted by Astronomy & Astrophysics