cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spectral and morphological analysis of the remnant of Supernova 1987A with ALMA & ATCA
Creators: name: Zanardo, Giovanna
name: Staveley-Smith, Lister
name: Indebetouw, Remy
name: Chevalier, Roger A.
name: Matsuura, Mikako
name: Gaensler, Bryan M.
name: Barlow, Michael J.
name: Fransson, Claes
name: Manchester, Richard N.
name: Baes, Maarten
name: Kamenetzky, Julia R.
name: Lakicevic, Masha
name: Lundqvist, Peter
name: Marcaide, Jon M.
name: Marti-Vidal, Ivan
name: Meixner, Margaret
name: Ng, C. -Y.
name: Park, Sangwook
name: Sonneborn, George
name: Spyromilio, Jason
name: van Loon, Jacco Th.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a comprehensive spectral and morphological analysis of the remnant of Supernova (SN) 1987A with the Australia Telescope Compact Array (ATCA) and the Atacama Large Millimeter/submillimeter Array (ALMA). The non-thermal and thermal components of the radio emission are investigated in images from 94 to 672 GHz ($λ$ 3.2 mm to 450 $μ$m), with the assistance of a high-resolution 44 GHz synchrotron template from the ATCA, and a dust template from ALMA observations at 672 GHz. An analysis of the emission distribution over the equatorial ring in images from 44 to 345 GHz highlights a gradual decrease of the east-to-west asymmetry ratio with frequency. We attribute this to the shorter synchrotron lifetime at high frequencies. Across the transition from radio to far infrared, both the synchrotron/dust-subtracted images and the spectral energy distribution (SED) suggest additional emission beside the main synchrotron component ($S_ν\proptoν^{-0.73}$) and the thermal component originating from dust grains at $T\sim22$ K. This excess could be due to free-free flux or emission from grains of colder dust. However, a second flat-spectrum synchrotron component appears to better fit the SED, implying that the emission could be attributed to a pulsar wind nebula (PWN). The residual emission is mainly localised west of the SN site, as the spectral analysis yields $-0.4\lesssimα\lesssim-0.1$ across the western regions, with $α\sim0$ around the central region. If there is a PWN in the remnant interior, these data suggest that the pulsar may be offset westward from the SN position.
description: ApJ accepted. 21 pages, emulateapj. References updated
HUVN Investiga nº 17
Creators: name: Gonzalez-Flores, Encarnación
name: Rodriguez-del-Aguila, María del Mar
name: Alba-Ruiz, Rubén
name: Carmen Olvera Porcel
Publisher: name: Zenodo
Year: 2023
Subjects: Investigación
Financiación
Ensayos Clínicos
Publicaciones
Premios

description: El documento es la edición número 17 de HUVN Investiga, una publicación que contiene noticias, cursos de interés, premios y tesis, proyectos y recursos humanos financiados, ensayos clínicos aprobados, artículos científicos y mucho más. En particular, se destaca un estudio observacional transversal que se llevó a cabo con médicos residentes que cursaban el Máster de Iniciación a la Investigación en Medicina en la Universidad de Zaragoza, en el que se evaluó la facilidad de uso y aprendizaje de Jamovi frente a IBM SPSS. Además, se incluyen los datos de contacto de los coordinadores, diseñadores y colaboradores de la publicación.
description: La newsletter contiene información sobre la producción científica, proyectos, cursos, ensayos clínicos, premios y noticias de interés del el Hospital Universitario Virgen de las Nieves de Granada. Se trata de una revista digital mensual que proporciona contenido para ejecutivos de hospitales y sistemas de salud. El boletín está disponible en formato de archivo Adobe PDF y se puede descargar desde el sitio web del hospital (https://www.huvn.es/investigacion/formacion_y_divulgacion/newsletter_huvn_investiga).
Нелинейно-неупругие эффекты в сцементированном песчанике на килогерцовых частотах
Creators: name: Машинский Эдуард Иннокентьевич
name: Егоров Геннадий Владимирович
name: Медных Дмитрий Александрович
Publisher: name: Физическая мезомеханика
Year: 2010
Subjects: НЕУПРУГОСТЬ
НЕЛИНЕЙНОСТЬ
ГИСТЕРЕЗИС
НЕУПРУГИЕ СЕЙСМИЧЕСКИЕ ПАРАМЕТРЫ
АМПЛИТУДНО-ЗАВИСИМЫЕ СКОРОСТЬ ВОЛНЫ И ЗАТУХАНИЕ

description: Проведены эксперименты по изучению влияния амплитудного фактора на скорость и затухание продольных волн в образце сцементированного песчаника. Измерения выполнены на отраженных волнах на частоте импульса 6.8 кГц в амплитудном диапазоне Aε ~ (0.2-2.4) ⋅ 10-6 при статическом аксиальном давлении 0.25-1.0 МПа. Скорость волны слабо зависит от амплитуды при малом статическом давлении и практически не зависит при более высоком давлении. Скорость волны с увеличением амплитуды уменьшается на 0.5 %, а с увеличением статического давления увеличивается на 2.5 % для всех амплитудных величин. Влияние амплитуды на величину и характер затухания намного существеннее. Увеличение декремента затухания с амплитудой при низких давлениях достигает 11 %. Изменение затухания с давлением идет как в сторону уменьшения (до 20 %), так и увеличения (более чем в два раза) для всех амплитудных величин. Эти результаты могут быть полезны для совершенствования акустических и сейсмических методов диагностики.
ХОРИЖИЙ ТАЖРИБАЛАР ЁРДАМИДА ИНВЕСТИТЦИЯ ЛОЙИҲАЛАРНИ БОШҚАРИШ
Creators: name: Қодиров, Искандар
Publisher: name: Zenodo
Year: 2023

description: Мақолада инвестиция лойиҳалари бўйича Ўзбекистон Республикаси ва жаҳонда олиб борилаётлан ислоҳотлари келтирилган. Шу билан бирга лойиҳа ва инвестицион лойиҳа атамаларига олимлар томонидан келтирилган таърифлар, инвестиция лойиҳаларида тавакалчилик, инвестиция лойиҳа рисклари, инвестицион лойиларанинг авфзалликлари ва чекловлари бўйича назарий маълумотлар келтирилган.
Additional file 1 of Bioinformatics tools and data resources for assay development of fluid protein biomarkers
Creators: name: Waury, Katharina
name: Willemse, Eline A. J.
name: Vanmechelen, Eugeen
name: Zetterberg, Henrik
name: Teunissen, Charlotte E.
name: Abeln, Sanne
Publisher: name: figshare
Year: 2022
Subjects: subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer

description: Additional file 1: Use cases for dementia protein biomarkers. PDF document of extended use cases for three biomarker candidates of Alzheimer's Disease: neurogranin, tau and TREM2. For each biomarker a suitability survey was performed and then compared to the current knowledge of these proteins. The document contains figures and results of the used bioinformatics tools and data resources as well as our interpretation of these results.
Neutrino Trident Production: A Powerful Probe of New Physics with Neutrino Beams
Creators: name: Altmannshofer, Wolfgang
name: Gori, Stefania
name: Pospelov, Maxim
name: Yavin, Itay
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The production of a mu+mu- pair from the scattering of a muon-neutrino off the Coulomb field of a nucleus, known as neutrino trident production, is a sub-weak process that has been observed in only a couple of experiments. As such, we show that it constitutes an exquisitely sensitive probe in the search for new neutral currents among leptons, putting the strongest constraints on well-motivated and well-hidden extensions of the Standard Model gauge group, including the one coupled to the difference of the lepton number between the muon and tau flavor, L_mu-L_tau. The new gauge boson, Z', increases the rate of neutrino trident production by inducing additional $(\barμγ_αμ)(\barνγ^αν)$ interactions, which interfere constructively with the Standard Model contribution. Existing experimental results put significant restrictions on the parameter space of any model coupled to muon number L_mu, and disfavor a putative resolution to the muon g-2 discrepancy via the loop of Z' for any mass m_Z' > 400 MeV. The reach to the models' parameter space can be widened with future searches of the trident production at high-intensity neutrino facilities such as the LBNE.
description: 5 pages, 4 figures, v2: minor modifications, version to appear in PRL
Systematic study of the uncertainties in fitting the cosmic positron data by AMS-02
Creators: name: Yuan, Qiang
name: Bi, Xiao-Jun
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The operation of AMS-02 opens a new era for the study of cosmic ray physics with unprecedentedly precise data which are comparable with the laboratory measurements. The high precision data allow a quantitative study on the cosmic ray physics and give strict constraints on the nature of cosmic ray sources. However, the intrinsic errors from the theoretical models to interpret the data become dominant over the errors in the data. In the present work we try to give a systematic study on the uncertainties of the models to explain the AMS-02 positron fraction data, which shows the cosmic ray $e^+e^-$ excesses together with the PAMELA and Fermi-LAT measurements. The excesses can be attributed to contributions from the extra $e^+e^-$ sources, such as pulsars or the dark matter annihilation. The possible systematic uncertainties of the theoretical models considered include the cosmic ray propagation, the treatment of the low energy data, the solar modulation, the $pp$ interaction models, the nuclei injection spectrum and so on. We find that in general a spectral hardening of the primary electron injection spectrum above $\sim50-100$ GeV is favored by the data. Furthermore, the present model uncertainties may lead to a factor of $\sim2$ enlargement in the determination of the parameter regions of the extra source, such as the dark matter mass, annihilation rate and so on.
description: 20 pages (JCAP style), 6 figures and 6 tables; accepted for publication in JCAP
HUVN Investiga nº 18
Creators: name: Gonzalez-Flores, Encarnación
name: Rodríguez del Águila, María del Mar
name: Alba-Ruiz, Ruben
Publisher: name: Zenodo
Year: 2023
Subjects: Investigación
Financiación
Ensayos Clínicos
Publicaciones
Premios

description: Este es el boletín de noticias de octubre de 2023 de la revista HUVN INVESTIGA del Hospital Universitario Virgen de las Nieves en Granada. El boletín incluye noticias sobre la Semana de Innovación del hospital y el reconocimiento de varios investigadores como los más influyentes del mundo. También presenta información sobre cursos de investigación, premios, becas, tesis y ensayos clínicos.
El Instituto de Salud Carlos III ha otorgado varios proyectos de investigación y recursos humanos en el área de la salud. Algunos de los proyectos de investigación incluyen el estudio de biomarcadores de respuesta terapéutica en pacientes con dermatitis atópica y el desarrollo de métodos de estimulación cerebral profunda en pacientes con enfermedad de Parkinson. También se han financiado ensayos clínicos y estudios observacionales en áreas como hematología, oncología y dermatología. Además, se han publicado varios artículos científicos en revistas especializadas.
Se presenta una lista de publicaciones científicas en diversos campos médicos, incluyendo dermatología, farmacia, hematología, medicina interna, neurología, obstetricia y ginecología, oftalmología y oncología. Las publicaciones abarcan una variedad de temas, incluyendo la efectividad de tratamientos, factores de riesgo, precisión diagnóstica y pautas de tratamiento.
El artículo discute la situación actual de la formación especializada en pediatría y sus áreas específicas, destacando los desafíos y necesidades. Otro artículo explora el impacto económico del Acceso Transradial (TRA) versus el Acceso Transfemoral (TFA) para procedimientos neurovasculares en España. También hay un artículo sobre avances en radiología musculoesquelética. Además, hay artículos sobre disruptores ambientales en hospitales y el sueño de los cuidadores durante la hospitalización, así como el impacto pronóstico de la testosterona sérica en el cáncer de próstata metastásico hormonalmente no tratado. Por último, hay artículos sobre el impacto de una segunda resonancia magnética y una nueva biopsia en pacientes con biopsia dirigida.
description: La newsletter contiene información sobre la producción científica, proyectos, cursos, ensayos clínicos, premios y noticias de interés del el Hospital Universitario Virgen de las Nieves de Granada. Se trata de una revista digital mensual que proporciona contenido para ejecutivos de hospitales y sistemas de salud. El boletín está disponible en formato de archivo Adobe PDF y se puede descargar desde el sitio web del hospital (https://www.huvn.es/investigacion/formacion_y_divulgacion/newsletter_huvn_investiga).
Несимметричная физическая теория пластичности для описания эволюции микроструктуры поликристаллов
Creators: name: Трусов Петр Валентинович
name: Волегов Павел Сергеевич
name: Янц Антон Юрьевич
Publisher: name: Физическая мезомеханика
Year: 2011
Subjects: ФИЗИЧЕСКИЕ ТЕОРИИ ПЛАСТИЧНОСТИ
НЕСИММЕТРИЧНЫЕ МЕРЫ НАПРЯЖЕННОГО И ДЕФОРМИРОВАННОГО СОСТОЯНИЯ
НЕСИММЕТРИЧНАЯ УПРУГОПЛАСТИЧНОСТЬ
РОТАЦИЯ КРИСТАЛЛИЧЕСКОЙ РЕШЕТКИ
ФРАГМЕНТАЦИЯ

description: На основе анализа геометрии кристаллической решетки и геометрических свойств многогранника текучести в физических упругопластических теориях показана необходимость перехода к несимметричным мерам напряженного и деформированного состояния при описании процессов интенсивной пластической деформации поликристаллов, сопровождающихся глубокой перестройкой микрои мезоструктуры. Сформулирована общая структура двухуровневой (макрои мезоуровень) физической теории для описания процессов эволюции микрои мезоструктуры поликристаллов; на каждом из уровней предложены меры скорости деформаций, сопряженные с ними меры напряжений, меры деформированного состояния; проведен анализ свойств тензора упругих свойств на мезоуровне. Отдельно рассмотрена проблема выбора квазитвердого движения на макроуровне. Построены определяющие соотношения для ротационной моды, предложен алгоритм для определения элементов ротации областей материала, в данный момент испытывающих разворот. Приведены результаты моделирования для некоторых частных случаев нагружения.
Two-point correlation functions of QCD in the Landau gauge
Creators: name: Peláez, Marcela
name: Tissier, Matthieu
name: Wschebor, Nicolás
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the gluon, ghost and quark propagators in the Landau gauge with dynamic quarks. We perform a one-loop calculation in a model where the standard Faddeev-Popov Lagrangian is complemented by a mass term for the gluons which is seen as a minimal way of taking into account the effect of the Gribov copies. The analytic results are compared with lattice data obtained in four dimension and for two, three and four quark flavors. The gluon and ghost propagators are reproduced with a few percent accuracy in the whole range of accessible momenta. The scalar part of the quark propagator is found to be in good agreement with the lattice data. However, the quark renormalization is poorly described. We attribute this discrepancy to the fact that the one-loop corrections to this quantity are unusually small so that the two loop contribution can not be discarded. The results are expressed in terms of the coupling, the gluon mass and the light quark mass at 1 GeV.
description: 10 pages, 13 figures
Anomalous scaling of the specific-heat jump $ΔC$ vs. $T_c$ in the Fe-based superconductors: the $\pm$S-wave pairing state model
Creators: name: Bang, Yunkyu
name: Stewart, G. R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The strong power law behavior of the specific heat jump $ΔC$ vs. $T_c$ ($ΔC/T_c \sim T_c ^α, α\approx 2$), first observed by Bud'ko, Ni, and Canfield (BNC)[1], has been confirmed with several families of the Fe-based superconducting compounds with a series of doping. We show here that this anomalous non-BCS behavior is an intrinsic property of the multiband superconducting state paired by a dominant interband interaction ($V_{inter} > V_{intra}$) reflecting the relation $\frac{Δ_h}{Δ_e} \sim \sqrt{\frac{N_e}{N_h}}$ near $T_c$, as in the $\pm$S-wave pairing state. Then this $ΔC$ vs. $T_c$ relation can continuously change from the perfect BNC scaling to a considerable deviation at lower $T_c$ region with a moderate variation of the impurity scattering rate.
description: 4 pages, 3 figures
Instrumentos para a avaliação do sono nos adolescentes em Portugal: Scoping Review
Creators: name: Ferraria, Ana Luisa
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Psychiatry and Psychology
subject: Medicine and Health Sciences
subject: Nursing
subject: FOS: Health sciences
subject: Adolescentes
subject: Instrumentos de avaliação
subject: Portugal
subject: Scoping Review
subject: Sono

description: Identificar e mapear os instrumentos de avaliação do sono validados para adolescentes portugueses, que poderão contribuir para melhorar a intervenção do enfermeiro na prevenção de alterações e promoção de hábitos de sono saudáveis.
Probationary citizenship in science, technology, engineering and mathematics in an Irish university: A disrupted patriarchal bargain?
Creators: name: O'CONNOR, PAT
Publisher: name: University of Limerick
Year: 2022
Subjects: Higher education
Sociology of education

description: The model for the creation of knowledge in Science, Technology, Engineering and Mathematics (STEM) involves the near total career dependence by probationary citizens on senior academics. In this article such probationary citizens include those at the early career stage, mainly but not exclusively post-doctoral researchers (postdocs). Traditionally, the implicit assumption was that senior academics would facilitate their access to a permanent position in return for a time limited period of exploitation as part of an organisational patriarchal bargain. This article is concerned with exploring how these probationary citizens came to access temporary positions, their experience of them and their perception of their future. Drawing on qualitative data from 13 probationary citizens, men and women, on two to five-year contracts in an Irish case study university, it shows that regardless of how they accessed probationary citizenship, their future was uncertain with no guarantee of a permanent academic position. The article raises questions about the valorisation of the highly dependent relationships between probationary citizens and permanent STEM academics as the main model for the creation of knowledge in STEM.
Contact mechanics modeling of piezo-actuated stick-slip microdrives
Creators: name: Nguyen Ha Xuan
name: Edeler Christoph
name: Fatikow Sergej
Publisher: name: Физическая мезомеханика
Year: 2012
Subjects: STICK-SLIP DRIVE
ACTUATOR
CONTACT MECHANICS
PIEZOELECTRIC

description: This paper draws a line from early attempts of modeling stick-slip microdrives to open questions from today’s research. As a basis, it contains a collection of substantial investigations on piezo-actuated stick-slip microdrives for nanomanipulation purposes. Friction models showing special characteristics and their mathematical representations are reviewed. It is found that the working properties of stick-slip drives strongly depend on friction characteristics of the contact points between the guiding elements, which is known for years. However, numerous publications in the field of friction and remaining problems — which cannot be explained by known friction models — indicate that there is a demand for even more friction-related research. Former attempts to model stick-slip drives are based on the so-called LuGre friction model, which is shortly presented. An empirical model called CEIM is also analyzed. It is an adaption of the elastoplastic model. The latter can cover not only the phenomenon “0-amplitude” (described by the authors in recent publications), but also stick-slip based force generation scenarios. Nevertheless, interesting friction characteristics such as the generation of µN forces with stick-slip drives, which are already proven, cannot be covered by known friction models. It is pointed out which characteristics have to be considered.
Itinerant effects and enhanced magnetic interactions in Bi-based multilayer cuprates
Creators: name: Dean, M. P. M.
name: James, A. J. A.
name: Walters, A. C.
name: Bisogni, V.
name: Jarrige, I.
name: Huecker, M.
name: Giannini, E.
name: Fujita, M.
name: Pelliciari, J.
name: Huang, Y.
name: Konik, R. M.
name: Schmitt, T.
name: Hill, J. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The cuprate high temperature superconductors exhibit a pronounced trend in which the superconducting transition temperature, $T_{\rm c}$, increases with the number of CuO$_2$ planes, $n$, in the crystal structure. We compare the magnetic excitation spectrum of Bi$_{2+x}$Sr$_{2-x}$CuO$_{6+δ}$ (Bi-2201) and Bi$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10 + δ}$ (Bi-2223), with $n=1$ and $n=3$ respectively, using Cu $L_3$-edge resonant inelastic x-ray scattering (RIXS). Near the anti-nodal zone boundary we find the paramagnon energy in Bi-2223 is substantially higher than that in Bi-2201, indicating that multilayer cuprates host stronger effective magnetic exchange interactions, providing a possible explanation for the $T_{\rm c}$ vs.\ $n$ scaling. In contrast, the nodal direction exhibits very strongly damped, almost non-dispersive excitations. We argue that this implies that the magnetism in the doped cuprates is partially itinerant in nature.
description: 6 pages, 5 figures
Phase-field simulation of abnormal anisotropic grain growth in polycrystalline ceramic fibers
Creators: name: Kundin, Julia
name: Saint Martin Almeida, Renato
name: Salama, Hesham
name: Farhandi, Hedieh
name: Tushtev, Kamen
name: Rezwan, Kurosch
Publisher: name: Elsevier {BV}
Year: 2020
Subjects: subject: Anisotropic surface energy
subject: Anisotropic mobility
subject: Phase-field modeling
subject: Alumina fibers
subject: Ceramics
subject: 620

description: The present work proposes a phase-field approach to realistically simulate abnormal grain growth in polycrystalline ceramic fibers at temperatures above 1000 °C. Under these conditions, grain growth is characterized by the formation of large elongated rectangular grains in a matrix of normal grains. The multi-phase-field model is extended by mechanisms which are responsible for the abnormal anisotropic growth: anisotropic interface energy, anisotropic interface mobility and a recrystallization driving force. Two types of the mobility anisotropy are considered: anisotropy due to the misorientation between grains and anisotropy due to the dependency on inclination angles. The experimental data from heat treatments of the ceramic fiber Nextel 610 at 1200–1300 °C with different dwell times are examined by the proposed model. The comparison of the experiment and the simulation results at various times shows that the extended multi-phase-field model is able to simulate the microstructure realistically. In most model cases, abnormal grains have a rectangular shape, similar to the experiment. The best fit of the experimental grain size distribution and the grain shape is achieved by the simulation with the misotientation dependency of the interface mobility. Furthermore, it was shown that a strong decrease on the grain growth rate with time, observed in the experiment, can be reproduced by the simulations taking into account the segregation of impurities on grain boundaries that results in the decreasing grain boundary mobility.
On the reduction method of dimensionality: the exact mapping of axisymmetric contact problems with and without adhesion
Creators: name: Heß Markus
Publisher: name: Физическая мезомеханика
Year: 2012
Subjects: METHOD OF REDUCTION OF DIMENSIONALITY
AXISYMMETRIC BOUSSINESQ PROBLEM
ADHESIVE CONTACT
JKR-THEORY

description: Starting from the classical theory of contact mechanics it is shown that the relationship between load, penetration and contact radius of any axisymmetric contact can be mapped exactly on a one-dimensional system, thus the reduction method of dimensionality is valid for conforming and non-conforming contacts. Furthermore the reduction method has been successfully extended to adhesive contact problems. The mapping of the classical theory of Johnson, Kendall and Roberts derived for spherical contacts as well as its application to axisymmetric contacts of arbitrary shape is possible; all results are reproduced precisely.
Damage analysis of 2.5D C/C-SiC composites subjected to fatigue loadings
Creators: name: Saint Martin Almeida, Renato
name: Li, Yang
name: Besser, Benjamin
name: Xiao, Peng
name: Zhou, Wei
name: Brückner, Alexander
name: Langhof, Nico
name: Tushtev, Kamen
name: Krenkel, Walter
name: Rezwan, Kurosch
Publisher: name: Elsevier {BV}
Year: 2019
Subjects: subject: Ceramic-matrix composites (CMCs)
subject: Fatigue
subject: Acoustic emission
subject: Damage threshold
subject: 620

description: Damage analyses of a ceramic matrix composite during fatigue and quasi-static loads were performed by acoustic emission (A.E.) monitoring. The material studied was a 2.5D C/C-SiC composite produced by chemical vapor infiltration followed by liquid silicon infiltration. The analysis done during the first 200 cycles of a fatigue test showed that the number of A.E. hits is a good parameter for the quantification of damage. Furthermore, the A.E. hit energy was associated with the type of damage. In this sense, the damage developed during the fatigue loading was related to matrix crack initiation, propagation and re-opening, as well as fiber-matrix friction. Quasi-static tests on post-fatigue samples showed that the previous fatigue loadings increased the material`s damage threshold and hindered the development of new damage. Particular attention was given to the sample after 2,000,000 cycles as this sample showed distinct A.E. signals that could be related to fiber debonding.
Quenching and anisotropy of hydromagnetic turbulent transport
Creators: name: Karak, Bidya Binay
name: Rheinhardt, Matthias
name: Brandenburg, Axel
name: Kapyla, Petri J.
name: Kapyla, Maarit J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Hydromagnetic turbulence affects the evolution of large-scale magnetic fields through mean-field effects like turbulent diffusion and the $α$ effect. For stronger fields, these effects are usually suppressed or quenched, and additional anisotropies are introduced. Using different variants of the test-field method, we determine the quenching of the turbulent transport coefficients for the forced Roberts flow, isotropically forced non-helical turbulence, and rotating thermal convection. We see significant quenching only when the mean magnetic field is larger than the equipartition value of the turbulence. Expressing the magnetic field in terms of the equipartition value of the {\it quenched} flows, we obtain for the quenching exponents of the turbulent magnetic diffusivity about 1.3, 1.1, and 1.3 for Roberts flow, forced turbulence, and convection, respectively. However, when the magnetic field is expressed in terms of the equipartition value of the unquenched flows these quenching exponents become about 4, 1.5, and 2.3, respectively. For the $α$ effect, the exponent is about 1.3 for the Roberts flow and 2 for convection in the first case, but 4 and 3, respectively, in the second. In convection, the quenching of turbulent pumping follows the same power law as turbulent diffusion, while for the coefficient describing the $\bf Ω\times \bf J$ effect nearly the same quenching exponent is obtained as for $α$. For forced turbulence, turbulent diffusion proportional to the second derivative along the mean magnetic field is quenched much less, especially for larger values of the magnetic Reynolds number. However, we find that in corresponding axisymmetric mean-field dynamos with dominant toroidal field the quenched diffusion coefficients are the same for the poloidal and toroidal field constituents.
description: Accepted for publication in ApJ
The use of advanced technologies for integrated management of root-knot nematodes (Meloidogyne spp., Nematoda: Meloidogynidae) : doctoral dissertation
Creators: name: Susič, Nik
Publisher: name: Zenodo
Year: 2020

description: Tropical root-knot nematodes (RKN) are extremely polyphagous pests causing large yield losses in agriculture. Some species, such as Meloidogyne ethiopica, M. inornata and M. luci (MEG) are highly related and difficult to distinguish. We sequenced 7 RKN isolates from the MEG group and following the genome assembly, determined their phylogenetic position within the genus. The genome assembly of M. luci SI-Smartno V13 is currently the most complete publicly available RKN genome, having 327 contigs, N50 contig size of 1.7 Mb, and final assembly size of 209.2 Mb. Phylogenetic analysis showed the positioning of all MEG-group isolates within a single monophyletic clade, and the species M. luci differed significantly from the species M. ethiopica and M. inornata. We tested the applicability of hyperspectral imaging for the early differentiation of biotic stress (RKN infestation) from abiotic stress (drought) in tomato plants. Using hyperspectral image analysis in the 400-2500 nm spectral range, it was possible to distinguish well-watered from water deficient plants with 100 % accuracy; and nematode-infested from healthy plants with 90-100 % accuracy. We also evaluated nematicidal activity and analysed the genomes of Bacillus firmus I-1582 and Bacillus sp. ZZV12-4809 and found multiple putative virulence factors. In the pot experiments as well as in the microplots, the strain I-1582 reduced M. luci infestation rates by 51-53 % compared to untreated control. I-1582 showed nematicidal and plant-growth promoting effects, as indicated by plant morphology measurements, relative chlorophyll content, leaf nutrient composition, and hyperspectral image analysis. Utilising supervised classification for hyperspectral image analysis, we successfully discriminated between B. firmus-treated and untreated plants – in the pot experiment we achieved 97.4 % and in the microplot experiment 96.3 % classification success.
Tape casting of polysiloxane-derived ceramic with controlled porosity and surface properties
Creators: name: Nishihora, Rafael Kenji
name: Quadri, Mara
name: Hotza, Dachamir
name: Rezwan, Kurosch
name: Wilhelm, Michaela
Publisher: name: Elsevier {BV}
Year: 2018
Subjects: subject: Polymer-derived ceramics (PDCs)
subject: Polysiloxanes
subject: Tape casting
subject: Sacrificial pore former
subject: Silicon oxycarbide (SiOC)
subject: 620

description: Tape casting has been applied to produce porous hybrid and SiOC ceramic tapes using ceramic precursors and commercially available polysiloxanes as polymeric binders. SiC particles of two different mean sizes (4.5 or 6.5 μm) were used as inert fillers to prevent shrinkage and increase mechanical stability. Macroporosity was adjusted by varying the azodicarbonamide (ADA) content from 0 to 30 wt.%. Decomposition of the polysiloxanes at 600 °C resulted in the generation of micropores with high specific surface area (187–267 m2 g−1) and a predominant hydrophobic behavior. At 1000 °C mainly meso/macroporosity were observed (SSA: 32–162 m2 g−1) accompanied by increased hydrophilicity. The influence of ADA content, SiC size, and pyrolysis temperature on open porosity (2.5–37%), average pore size (<0.01–1.76 μm), surface characteristics, and flexural strength (10.5–121 MPa) were investigated. The porous tapes with different surface characteristics and controlled structure are highly promising for applications involving membrane processes, particularly microfiltration systems (0.1–10 μm).
Simulation of the influence of ultrasonic in-plane oscillations on dry friction accounting for stick and creep
Creators: name: Starcevic Jasminka
name: Filippov Alexander, E.
Publisher: name: Физическая мезомеханика
Year: 2012
Subjects: METHOD OF REDUCTION OF DIMENSIONALITY
CONTACT STIFFNESS
ULTRASONIC OSCILLATIONS
TANGENTIAL DYNAMIC CONTACT

description: We consider a pair of bodies contacting on an elastic substrate; the distance between the bodies oscillates harmonically at a high frequency. If a horizontal force is applied to the bodies, macroscopic movement starts only after achieving some critical value, which we identify with the static friction force of the oscillating system. The dependence of the static friction force on the oscillation amplitude is simulated numerically using the method of reduction of dimensionality. Results of simulation are compared with experimental data.
Contact force resulting from rolling on a self-affine fractal rough surface
Creators: name: Popov Mikhail
Publisher: name: Физическая мезомеханика
Year: 2012
Subjects: METHOD OF REDUCTION OF DIMENSIONALITY
DIAGNOSTIC SYSTEMS
CONTACT PROBLEM
SURFACE ROUGHNESS

description: The time dependence of the contact force resulting from the rolling of a sphere on self-affine fractal rough surfaces was investigated using the method of reduction of dimensionality. The main focus was on the part of the spectrum corresponding to the short wavelength corrugation (with a wavelength much smaller than the nominal contact radius). It has been shown that in this domain, the spectral density of the normal force is a power function of frequency. This result can be used for calculation of high frequency acoustic emission of rolling contacts in various technical systems as well as for development of diagnostic systems.
Fatigue behavior and residual strength evolution of 2.5D C/C-SiC composites
Creators: name: Li, Yang
name: Xiao, Peng
name: Luo, Heng
name: Saint Martin Almeida, Renato
name: Li, Zhuan
name: Zhou, Wei
name: Brückner, Alexander
name: Reichert, Florian
name: Langhof, Nico
name: Krenkel, Walter
Publisher: name: Elsevier {BV}
Year: 2016
Subjects: subject: C/C-SiC
subject: Tensile fatigue
subject: Mechanical evolution
subject: Residual strength
subject: 620

description: The residual tensile strength (RTS) evolution of a chemical vapor infiltration and liquid silicon infiltration based 2.5 dimensional reinforced C/C-SiC (2.5D C/C-SiC) composites after fatigue loadings has been investigated. The results show that the fatigue limit (106 cycles) of the 2.5D C/C-SiC composites reaches 58.2 MPa, which corresponds to 75% of the virgin static tensile strength (77.7 MPa). Moreover, an ultimate strength enhancement is observed after fatigue loading. The most pronounced RTS increases to 92.5 MPa when specimens are subjected to fatigue stress of 69.3 MPa for 105 cycles. The microstructural analysis indicates that RTS after cyclic loading is affected by the formation and propagation of cracks and interfacial degradation. Furthermore, a model proposed in this work can well evaluate the RTS of the composites in relation to the number of the applied fatigue cycles.
Alpha- and Omega-Deformations from fluxes in M-Theory
Creators: name: Lambert, Neil
name: Orlando, Domenico
name: Reffert, Susanne
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss an SL(2,R) family of deformed N=2 four-dimensional gauge theories which we derive from a flux background in M-theory. In addition to the Omega-deformation this family includes a new deformation, which we call the Alpha-deformation, which can be viewed as an S-dual to the Omega-deformation. We study these gauge theories in two ways: by constructing a non-Abelian (but UV-complete) Lagrangian, and by their strong coupling lift to M-theory where their low-energy dynamics can be determined by examining the equation of motion of a single M5-brane wrapped on a Riemann surface.
description: 25 pages. Typos corrected. Reference added. JHEP version
title: Erstellung eines Serviceportfolios durch smartes Logging von Betriebsdaten im Tunnelbau
Creators: name: Freigassner, Thomas
Publisher: name: FH CAMPUS 02 (CAMPUS 02 Fachhochschule der Wirtschaft)
Year: 2023
Subjects: subject: 658 Allgemeines Management

description: Ein Navigationssystem für Tunnelbohrmaschinen sammelt eine enorme Menge an Daten wie Sensordaten, Betriebsdaten, Fehlerprotokolle oder Informationen über das Benutzerverhalten. Viele dieser Daten werden nur für die Fehleranalyse verwendet. Dieses reaktive Verhalten kann in proaktives Handeln umgewandelt werden bevor die Zwischenfälle eintreten. Dies führt zu einer Kostenreduktion, da ein Stillstand der Maschine sehr teuer ist. Das Ziel dieser Arbeit ist es, ein Portfolio mit neuen Services aus den mitprotokollierten Daten zu erstellen. Das erste Kapitel beschäftigt sich mit der Forschungsfrage, der angewandten Methoden und dem weiteren Aufbau dieser Arbeit. Es folgen Kapitel über Tunnelbau und Software, Wertschöpfungsprozesse, Smart Services und Big Data. Im folgenden Kapitel wird das methodische Vorgehen zur Erstellung der Services beschrieben. Die Ergebnisse werden im nächsten Kapitel zusammengefasst, welches in drei Unterkapitel gegliedert ist. Das erste Unterkapitel beinhaltet die Ergebnisse eines durchgeführten Workshops, welcher Störungen im Tunnelbau analysiert und neue Dienstleistungen entdeckt. Im nächsten Kapitel werden die erarbeiteten Dienstleistungen anhand zweier Experteninterviews evaluiert. Das Serviceportfolio und die Ergebnisse der Arbeit werden im folgenden Kapitel dargestellt. Die Ergebnisse zeigen, dass die protokollierten Daten eine wertvolle Quelle für die Analyse der Prozesse im Tunnelbau sind und viel effizienter verwendet werden können.
description: Tunnel boring guidance systems collect an enormous amount of data such as sensor data, operating data, error protocols, and user behaviour. Much of this data is only used for troubleshooting. This reactive behaviour can be switched to proactive before incidents occur, reducing costs as boring machine standstill time is very expensive. The aim of this paper is to build a portfolio of services from the recorded data. The first chapter addresses the research question, the methodology, and subsequent thesis structure. It is followed by chapters about tunnels and software, value-added processes, smart services, and big data. The subsequent chapter describes the used methods to create new services. The next chapter is showing the results, which is subdivided into three chapters. It starts with the results of a workshop for analysing problems in tunnelling and creating new services. The ensuing chapter covers the evaluation of the new services in expert interviews. The service portfolio and outcome of this thesis is shown in the next chapter. The results show that protocolled data is a valuable source for analysing the process of tunnelling and can be used much more efficiently.
Measuring Speed of Gravitational Waves by Observations of Photons and Neutrinos from Compact Binary Mergers and Supernovae
Creators: name: Nishizawa, Atsushi
name: Nakamura, Takashi
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Detection of gravitational waves (GW) provides us an opportunity to test general relativity in strong and dynamical regimes of gravity. One of the tests is checking whether GW propagates with the speed of light or not. This test is crucial because the velocity of GW has not ever been directly measured. Propagation speed of a GW can deviate from the speed of light due to the modification of gravity, graviton mass, and the nontrivial spacetime structure such as extra dimensions and quantum gravity effects. Here we report a simple method to measure the propagation speed of a GW by directly comparing arrival times between gravitational waves, and neutrinos from supernovae or photons from short gamma-ray bursts. As a result, we found that the future multimessenger observations of a GW, neutrinos, and photons can test the GW propagation speed with the precision of ~10^{-16} improving the previous suggestions by 8-10 orders of magnitude. We also propose a novel method that distinguishes the true signal due to the deviation of GW propagation speed from the speed of light and the intrinsic time delay of the emission at a source by looking at the redshift dependence.
description: 8 pages, 6 figures
Supplementary Figure S5 from Mu-opioid receptor system modulates responses to vocal bonding and distress signals in humans
Creators: name: Sun, Lihua
name: Lukkarinen, Lasse
name: Putkinen, Vesa
name: Karlsson, Henry
name: Hirvonen, Jussi
name: Tiihonen, Jari
name: Lauerma, Hannu
name: Scott, Sophie
name: Nummenmaa, Lauri
Publisher: name: The Royal Society
Year: 2022
Subjects: Neuroscience

description: Figure S5. Correlation matrix for ROI-level MOR levels and ROI-level BOLD response to crying. ACC = anterior cingulate cortex, M1 = primary motor cortex, M2 = secondary motor cortex, OFC = orbitofrontal cortex, PCC = posterior cingulate cortex, S1 = primary somatosensory cortex, S2 = secondary somatosensory cortex.
Bifix codes and interval exchanges
Creators: name: Berthé, Valérie
name: De Felice, Clelia
name: Dolce, Francesco
name: Leroy, Julien
name: Perrin, Dominique
name: Reutenauer, Christophe
name: Rindone, Giuseppina
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We investigate the relation between bifix codes and interval exchange transformations. We prove that the class of natural codings of regular interval echange transformations is closed under maximal bifix decoding.
description: arXiv admin note: substantial text overlap with arXiv:1305.0127, arXiv:1308.5396
Supplementary Figure S1 from Mu-opioid receptor system modulates responses to vocal bonding and distress signals in humans
Creators: name: Sun, Lihua
name: Lukkarinen, Lasse
name: Putkinen, Vesa
name: Karlsson, Henry
name: Hirvonen, Jussi
name: Tiihonen, Jari
name: Lauerma, Hannu
name: Scott, Sophie
name: Nummenmaa, Lauri
Publisher: name: The Royal Society
Year: 2022
Subjects: Neuroscience

description: Figure S1. Positive correlations with regional MOR and brain BOLD response to crying sounds. No positive correlations were found for laughter. Results are FDR-thresholded at p < 0.05.
АДАПТАЦИЯ МЛАДШИХ ШКОЛЬНИКОВ К ШКОЛЬНОМУ ОБРАЗОВАНИЮ
Creators: name: Бекметова, Дильноза
Publisher: name: Zenodo
Year: 2024

description: В статье изучены особенности процесса адаптации детей младшего школьного возраста к учебной деятельности. Автор статьи подчеркивает актуальность в настоящее время проблемы адаптации к учебной деятельности школьников, что связано с фундаментальными изменениями в образовании и мире. Автор показывает важную роль учителя, которому необходимо быть компетентным и обладать профессиональными качествами, чтобы влиять на саморазвитие учеников. Процесс адаптации у ученика к школе пройдёт быстрее при условии, что ребёнку в этот непростой во всех смыслах период будут помогать родные, педагоги и психологи совместно.
BRST invariant effective action of shadow fields, conformal fields, and AdS/CFT
Creators: name: Metsaev, R. R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Totally symmetric arbitrary spin massless and massive fields in AdS space are studied. For such fields, we obtain Lagrangians which are invariant under global BRST transformations. The Lagrangians are used for computation of partition functions and effective actions. We demonstrate that BRST invariant bulk action for massless field evaluated on the solution of Dirichlet problem for gauge massless fields and Faddeev-Popov fields leads to BRST invariant effective action for canonical shadow gauge fields and shadow Faddeev-Popov fields, while the BRST invariant bulk action for massive field evaluated on the solution of Dirichlet problem for gauge massive fields and Faddeev-Popov fields leads to BRST invariant effective action for anomalous shadow gauge fields and shadow Faddeev-Popov fields. The leading logarithmic divergence of the regularized effective action for the canonical shadow field leads to simple BRST invariant action of conformal field. We demonstrate that the Nakanishi-Laudrup fields entering the BRST invariant Lagrangian of conformal field can geometrically be interpreted as boundary values of massless AdS fields.
description: LaTeX-2e, 20 pages, v2: Typo in Eq.(4.9) corrected, reference 38 updated
Emerging prospects of vitamin D3 in metabolic syndrome: A proof of concept (POC) approach targeting inflammation
Creators: name: Singh, Yogendra
name: Gupta, Gaurav
name: Gilhotra, Ritu M.
name: Singh, Sachin Kumar
name: Prasher, Parteek
name: Krishnan, Anand
name: Dua, Kamal
name: Chellappan, Dinesh Kumar
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2020
Subjects: metabolic syndrome
vitamin D
cardiovascular disease

description: EXCLI Journal; 19:Doc1512; ISSN 1611-2156
Spectrum of edge states in the $ν=0$ quantum Hall phases in graphene
Creators: name: Pyatkovskiy, P. K.
name: Miransky, V. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Edge excitations of the $ν=0$ quantum Hall state in monolayer graphene are studied within the mean-field theory with different symmetry-breaking terms. The analytical expressions for the continuum (Dirac) model wave functions are obtained for the charge density wave, Kekulé distortion, ferromagnetic, and (canted) antiferromagnetic phases. The dispersion equations for each phase and boundary type (zigzag and armchair) are derived, numerically solved, and compared to the results of the corresponding effective tight-binding model. The effect of the next-to-nearest neighbor hopping parameter on the edge state spectrum is studied and revealed to be essential. The criteria for the existence of gapless edge states are established for each phase and edge type.
description: 14 pages, 5 figures, published version: minor changes, references and Fig.4 added
Thermal analysis of the antineutrino 144Ce source calorimeter for the SOX experiment
Creators: name: Farinon, Stefania
name: Musenich, Riccardo
name: Pallavicini, Marco
name: Bragazzi, Fabio
name: Cereseto, Roberto
name: Caminata, Alessio
name: Di Noto, Lea
name: Saracco, Paolo
name: Rossi, Cecilia
name: Testera, Gemma
name: Zavatarelli, Sandra
Publisher: name: INFN Open Access Repository
Year: 2016
Subjects: Finite Element Analysis
SOX experiment
INFN-16-08-GE

description: The technical note describes the calorimeter which will be used to measure the activity of the antineutrino 144Ce source of the SOX experiment at the Gran Sasso Laboratories. The principle of the calorimeter is based on the measurement of both mass flow and temperature increase of the water circulating in the heat exchanger surrounding the source. The calorimeter is vacuum insulated in order to minimize the heat losses. The preliminary design and thermal Finite Element Analysis (FEA) are reported in the note.