cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spin-Orbit Interaction Enhanced Fractional Quantum Hall States in the Second Landau Level
Creators: name: Ito, T.
name: Nomura, K.
name: Shibata, N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the fractional quantum Hall effect at filling fractions 7/3 and 5/2 in the presence of the spin-orbit interaction, using the exact diagonalization method and the density matrix renormalization group (DMRG) method in a spherical geometry. Trial wave functions at these fillings are the Laughlin state and the Moore-Reed-Pfaffian state. The ground state excitation energy gaps and pair-correlation functions at fractional filling factor 7/3 and 5/2 in the second Landau level are calculated. We find that the spin-orbit interaction stabilizes the fractional quantum Hall states.
description: 4pages, 4figures
Vertex coloring of plane graphs with nonrepetitive boundary paths
Creators: name: Barát, János
name: Czap, Július
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A sequence $s_1,s_2,...,s_k,s_1,s_2,...,s_k$ is a repetition. A sequence $S$ is nonrepetitive, if no subsequence of consecutive terms of $S$ form a repetition. Let $G$ be a vertex colored graph. A path of $G$ is nonrepetitive, if the sequence of colors on its vertices is nonrepetitive. If $G$ is a plane graph, then a facial nonrepetitive vertex coloring of $G$ is a vertex coloring such that any facial path is nonrepetitive. Let $π_f(G)$ denote the minimum number of colors of a facial nonrepetitive vertex coloring of $G$. Jendro\vl and Harant posed a conjecture that $π_f(G)$ can be bounded from above by a constant. We prove that $π_f(G)\le 24$ for any plane graph $G$.
Lasing from excitons in quantum wires
Creators: name: Pfeiffer, L. N.
name: Dignam, M. M.
name: Pinczuk, A.
name: West, K. W.
name: Wegscheider, Werner
name: McCall, S. L.
name: Hull, R.
Publisher: name: Universität Regensburg
Year: 1993
Subjects: subject: 530 Physik
subject: 78.45.+h, 73.20.Dx, 78.55.Cr

description: Stimulated optical emission from the lowest exciton state in atomically smooth semiconductor quantum wires is observed for the first time. The wires are formed by the ssT intersection of two 7 nm GaAs quantum wells. The optical emission wavelength is nearly independent of pump levels. This absence of band-gap renormalization in the laser emission indicates a marked increase in the stability of the exciton in one dimension.
The effects of short-term grassland set-asides on soil properties in the Fraser River delta of British Columbia
Creators: name: Lussier, Jason M.
Publisher: name: University of British Columbia
Year: 2018

description: The Grassland Set-Aside Stewardship Program provides cost-share payments to agriculture producers in the Fraser River delta (FRD) region of British Columbia for placing active cropland under a grass and legume vegetation mix for a one to four-year period. While long-term grassland set-asides (GLSA) have been found to improve soil structure, reduce compaction, and increase soil organic matter; short-term set-asides (<five years) are less common and less studied. The objective of my research was to evaluate the effects of short-term set-asides on select soil properties during the first two years of enrolment in the FRD. A total of eight fields entering the GLSA program were assessed prior to seeding for soil physical and chemical properties commonly associated with crop productivity in the region. The selected soil properties of fields entering the GLSA program were found to be highly variable, and two fields contained properties commonly associated with poor crop productivity. Following GLSA seeding, these unproductive fields were noted to have poor GLSA vegetative growth during the first two seasons of enrollment and a similar bulk density, aeration porosity and aggregate stability relative to fields managed for annual crop rotations (ACR). In contrast, productive GLSA fields entering the program were found to have a higher aggregate stability, higher aeration porosity, and lower bulk density than paired ACR fields after a single season of establishment. A further analysis for total soil organic nitrogen, total soil organic carbon, and active soil organic matter pools, did not identify differences between ACR fields and paired productive GLSA fields after two seasons of establishment. These findings indicate that productive fields entering the GLSA program have improved soil structure and less compaction than ACR fields after two years of enrollment, while unproductive fields entering the program may require additional accompanying management practices or an extended enrollment period for differences to occur.
Collective Classification of Textual Documents by Guided Self-Organization in T-Cell Cross-Regulation Dynamics
Creators: name: Abi-Haidar, Alaa
name: Rocha, Luis M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We present and study an agent-based model of T-Cell cross-regulation in the adaptive immune system, which we apply to binary classification. Our method expands an existing analytical model of T-cell cross-regulation (Carneiro et al. in Immunol Rev 216(1):48-68, 2007) that was used to study the self-organizing dynamics of a single population of T-Cells in interaction with an idealized antigen presenting cell capable of presenting a single antigen. With agent-based modeling we are able to study the self-organizing dynamics of multiple populations of distinct T-cells which interact via antigen presenting cells that present hundreds of distinct antigens. Moreover, we show that such self-organizing dynamics can be guided to produce an effective binary classification of antigens, which is competitive with existing machine learning methods when applied to biomedical text classification. More specifically, here we test our model on a dataset of publicly available full-text biomedical articles provided by the BioCreative challenge (Krallinger in The biocreative ii. 5 challenge overview, p 19, 2009). We study the robustness of our model's parameter configurations, and show that it leads to encouraging results comparable to state-of-the-art classifiers. Our results help us understand both T-cell cross-regulation as a general principle of guided self-organization, as well as its applicability to document classification. Therefore, we show that our bio-inspired algorithm is a promising novel method for biomedical article classification and for binary document classification in general.
Optical transitions in strained Ge/Si superlattices
Creators: name: Schmidt, U.
name: Humlíček, J.
name: Lukes, F.
name: Cardona, M.
name: Presting, H.
name: Kibbel, H.
name: Kasper, E.
name: Eberl, Karl
name: Wegscheider, Werner
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 530 Physik

description: Band-to-band infrared absorption has been studied in a series of Sn1Gem (m=11, 15, and 21) strained layer superlattices for the first time. The absorption coefficient shows a quadratic increase with two onsets, characteristic for indirect transitions. From a numerical fit to the absorption spectra, band gap energies are determined in the energy range between 0.55 and 0.75 eV, in accordance with theoretical calculations. The temperature dependence of the band gaps show the usual behavior, at low temperatures quadratic and at higher temperatures linear decrease with increasing temperature. Applied Physics Letters is copyrighted by The American Institute of Physics.We present spectroellipsometric measurements of the linear optical response of ultrathin Ge/Si strained-layer superlattices (SLSs) grown by molecular beam epitaxy with varying strain state and periodicity. The experiments were performed at 300 K in the energy range 1.6–5.7 eV. As predicted from ab initio calculations, the E1 transitions of the bulk split into various components in the SLSs. From the fitted critical point (CP) energy of the most pronounced of these components, the composition of the SLSs can be estimated. Compared with alloys of the same composition, the onset of the absorption in the SLSs is shifted towards lower energies than in compositionally equivalent alloys. The E2 transitions can be fitted to two CPs. Both exhibit a shift due to the hydrostatic component associated with the internal strain that is about one-half of what would be expected from bulk properties. We also present evidence of confinement effects.
Emmanuel and Jade's Case Study: Understanding different research types and uses
Creators: name: Gleeson, Jo
name: Cutler, Blake
name: Hall, Genevieve
name: Rickinson, Mark
name: Walsh, Lucas
Publisher: name: Monash University
Year: 2023
Subjects: Professional education and training
Teacher education and professional development of educators
Educational administration, management and leadership

description: This practitioner case study shares the journey of two educators and how they approached the quality use of research in their context. This case study was developed by the Monash Q Project (2019-2023) and published as part of the resources for the Monash Faculty of Education short course "An introduction to using research to inform educational practice." The course is designed for teachers, school leaders and education system actors who are beginning to use research in their work and are looking to use research evidence to support their practice.
Изучение антимикробных свойств пробионтов препарата «Life 9» в отношении условно-патогенной микрофлоры
Creators: name: Закрепина Е. Н.
name: Носкова В. И.
name: Муллагалиева О. А.
Publisher: name: Эффективное животноводство
Year: 2023
Subjects: микробиологическое исследование
микрооргпнизмы-пробионты
пробиотический препарат
Life 9
лактобактерии
бифидобактерии
условно-патогенные микроорганизмы
антагонистическая активность
антимикробное действие
microbiological study
microorganismsprobionts
probiotic preparation
lactobacilli
bifidobacteria
opportunistic microorganisms
antagonistic activity
antimicrobial action

description: В работе представлены результаты изучения свойств микроорганизмов-пробионтов препарата «Life 9». Выявлено снижение активности роста условно-патогенного St. аureus при совместном культивировании с пробиотическим микроорганизмом. При этом антагонистическое действие пробиотика на E. сoli на среде МПА не установлено. Однако, совместное культивирование E. сoli и пробиотика на стерильном обезжиренном молоке показало сохранение способности обоих микроорганизмов проявлять признаки роста с выделением молочной кислоты и коагуляцией белка.
description: The paper presents the results of studying the properties of microorganisms-probionts of the drug “Life 9. A decrease in the growth activity of conditionally pathogenic St. aigeis was revealed when co-cultured with a probiotic microorganism. At the same time, the antagonistic effect of the probiotic on E. coli on the MPA medium has not been established. However, the joint cultivation of E. coli and probiotic on sterile skimmed milk showed the preservation of the ability of both microorganisms to show signs of growth with the release of lactic acid and protein coagulation.
Patient-Specific Prosthetic Fingers by Remote Collaboration - A Case Study
Creators: name: Cabibihan, John-John
Publisher: name: arXiv
Year: 2011
Subjects: subject: Robotics (cs.RO)
subject: Medical Physics (physics.med-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The concealment of amputation through prosthesis usage can shield an amputee from social stigma and help improve the emotional healing process especially at the early stages of hand or finger loss. However, the traditional techniques in prosthesis fabrication defy this as the patients need numerous visits to the clinics for measurements, fitting and follow-ups. This paper presents a method for constructing a prosthetic finger through online collaboration with the designer. The main input from the amputee comes from the Computer Tomography (CT) data in the region of the affected and the non-affected fingers. These data are sent over the internet and the prosthesis is constructed using visualization, computer-aided design and manufacturing tools. The finished product is then shipped to the patient. A case study with a single patient having an amputated ring finger at the proximal interphalangeal joint shows that the proposed method has a potential to address the patient's psychosocial concerns and minimize the exposure of the finger loss to the public.
description: Open Access article
title: Ξενοδοχείο σε κλιμακωτή παράθεση, ένας πυρήνας φιλοξενίας στο ορεινό Ρέθυμνο
title: Hotel in a stepped arrangement, a hospitality core in mountainous Rethymno
Creators: name: Τζατζιμακη Σοφια
name: Δασκαλακης Σαββας
Publisher: name: Technical University of Crete
Year: 2023

description: Η παρούσα διπλωματική αναφέρεται σε έναν πυρήνα φιλοξενίας στο ορεινό Ρέθυμνο ως σημείο αναφοράς για συνάντηση και αναψυχή. Το ιδεολογικό υπόβαθρο της αρχιτεκτονικής σύνθεσης βασίζεται στην πρόθεσή να δημιουργηθεί μια πλατφόρμα προϋποθέσεων για μια πλούσια βιωματική εμπειρία. Ο σχεδιασμός αποσκοπεί στο να αποδείξει ότι η εμπειρία διαμονής σε αλληλεπίδραση με τη φύση και το τοπίο μπορεί να οδηγήσει σε ξεχωριστές ιδιομορφίες που σχετίζονται με τον τρόπο οργάνωσης και τη διαχείριση του πράσινου, καθώς και των κοινόχρηστων χώρων. Η βασική ιδέα για τον σχεδιασμό επικεντρώνεται στη δημιουργία επιμέρους αυλών με ποικιλία δραστηριοτήτων, πλαισιωμένων από φυτεμένους χώρους. Έχει δοθεί έμφαση στη χωροθέτηση ώστε να επιτυγχάνεται η μέγιστη οπτική άνεση όλων των δωματίων. Το πράσινο περιπλέκεται και καλύπτει τους όγκους, δημιουργώντας έτσι ιδιωτικούς πράσινους χώρους για τους φιλοξενούμενους , ενώ παράλληλα διασφαλίζεται η ανεμπόδιστη θέα όλων των χώρων του ξενοδοχείου.
Deliverable D6.2 : Integration of local compute resources into EOSC portal
Creators: name: Ivănoaica, Teodor
name: Schrettner, Lajos
name: Dostál, Martin
name: Jiri Majer
name: Bagó, Balázs
Publisher: name: Zenodo
Year: 2022
Subjects: EOSC, Photon, Neutron, Open Science, Data catalogue, Data analysis

description: D6.2 Integration of local compute resources into EOSC portal presents the challenges in adopting, implementing and promoting the FAIR set of tools and services supporting PaN (but not limited to PaN) partners to integrate their services and resources into EOSC.
Interband absorption in alpha-Sn/Ge short-period superlattices
Creators: name: Wegscheider, Werner
name: Olajos, Janos
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 530 Physik

description: Band-to-band infrared absorption has been studied in a series of Sn1Gem (m=11, 15, and 21) strained layer superlattices for the first time. The absorption coefficient shows a quadratic increase with two onsets, characteristic for indirect transitions. From a numerical fit to the absorption spectra, band gap energies are determined in the energy range between 0.55 and 0.75 eV, in accordance with theoretical calculations. The temperature dependence of the band gaps show the usual behavior, at low temperatures quadratic and at higher temperatures linear decrease with increasing temperature. Applied Physics Letters is copyrighted by The American Institute of Physics.
A pentagon of identities, graded tensor products and the Kirillov-Reshetikhin conjecture
Creators: name: Kedem, Rinat
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Algebra (math.QA)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17, 05

description: This paper provides a brief review of the relations between the Feigin-Loktev conjecture on the dimension of graded tensor products of $\g[t]$-modules, the Kirillov-Reshetikhin conjecture, the combinatorial ``M=N" conjecture, their proofs for all simple Lie algebras, and a pentagon of identities which results from the proof.
description: 21 pages
Минеральный состав крови коров создаваемого типа «Башкирский» черно-пестрой породы при скармливании им кормовой добавки
Creators: name: Латыпова Э.Х.
name: Вагапов И.Ф.
name: Ахметшина А.М.
name: Билашова У.Н.
name: Тагиров Х.Х.
Publisher: name: Эффективное животноводство
Year: 2023
Subjects: кормовые добавки
«Башкирский» тип
черно-пестрая порода
состав крови
макроэлементы
микроэлементы
feed additives
black-and-white breed
blood composition
macronutrients
microelement

description: Помимо контроля морфологических, биохимических и иммунных показателей крови подопытных животных, актуальным является оценка концентрации макро-, микроэлементов в крови. В данной статье приведен анализ содержания минералов в крови животных, в том числе в динамике, на фоне применения премикса «Мегамикс Оптилак
description: In addition to monitoring the morphological, biochemical and immune parameters of the blood of experimental animals, the study of the amount of trace elements in the blood is relevant. This article presents an analysis of the mineral content in the blood of animals, including in dynamics, against the background of the use of the premix “Megamix Optilak”
Sn and Sb segregation and their possible use as surfactant for short-period Si/Ge superlattices
Creators: name: Dondl, W.
name: Lütjering, G.
name: Wegscheider, Werner
name: Wilchelm, J.
name: Schorer, R.
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 1993
Subjects: subject: 530 Physik

description: The incorporation behaviour of antimony and tin in Ge was studied by means of Auger electron spectroscopy. By comparing the measured intensity ratios with a simple incorporation model, we find that Sn is stronger segregating than antimony. The activation energies are 0.34 and 0.27 eV, respectively. Using both materials in order to improve the interface sharpness of short-period Si/Ge superlattices, we can show that antimony improves the superlattice structure up to growth temperatures of 600°C, while with tin the superlattice growth is destroyed.
Generation of correlated photons in hydrogenated amorphous-silicon waveguides
Creators: name: Clemmen, S.
name: Perret, A.
name: Selvaraja, S. K.
name: Bogaerts, W.
name: van Thourhout, D.
name: Baets, R.
name: Emplit, Ph.
name: Massar, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report the first (to our knowledge) observation of correlated photon emission in hydrogenated amorphous- silicon waveguides. We compare this to photon generation in crystalline silicon waveguides with the same geome- try. In particular, we show that amorphous silicon has a higher nonlinearity and competes with crystalline silicon in spite of higher loss.
description: 3 pages, 4 figures
In-plane Raman scattering of [001]-grown Si/Ge superlattices
Creators: name: Schorer, R.
name: Wegscheider, Werner
name: Eberl, Karl
name: Kasper, E.
name: Kibbel, H.
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 530 Physik

description: We present a micro-Raman study of short-period [001] Si/Ge superlattices. The submicron spatial resolution of this technique enables in-plane scattering geometries, thus overcoming the severe limitations of conventional Raman set-ups for backscattering from the growth surface, where only longitudinal modes can be observed. We were able to study the complete phonon spectrum consisting of confined longitudinal optical and transverse optical and folded longitudinal acoustic and transverse acoustic modes. The scattering wavevector was found to be negligible for the confined optical modes, whereas it affects the frequencies of the folded acoustic modes. In contrast to the bulk, the selection rules are determined by the wavevector of the superlattice periodicity and not by the scattering wavevector.
Search for a Low Mass Particle Decaying into mu^+ mu^- in B0-> K*0 X and B0-> rho0 X at Belle
Creators: name: Hyun, H. J.
name: Park, H. K.
name: Kim, H. O.
name: al., H. Park et
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We search for dimuon decays of a low mass particle in the decays B0->K*0 X and B0->rho X using a data sample of 657x10^6 B Bbar events collected with the Belle detector at the KEKB asymmetric-energy e^+ e^- collider. We find no evidence for such a particle in the mass range from 212 MeV/c2 to 300 MeV/c2, and set upper limits on its branching fractions. In particular, we search for a particle with a mass of 214.3 MeV/c2 reported by the HyperCP experiment, and obtain upper limits on the products B(B0->K*0 X)xB(X->mu^+ mu^-) < 2.26 (2.27)x10^-8 and B(B0->rho0 X)xB(X->mu^+ mu^-) < 1.73 (1.73)x10^-8 at 90% C.L. for a scalar (vector) X particle.
description: 5 pages, 2 figures; submitted to Phys. Rev. Lett.
Cleaved edge overgrowth for quantum wire fabrication
Creators: name: Pfeiffer, Loren
name: Stormer, H. L.
name: Baldwin, K. W.
name: West, K. W.
name: Goñi, A. R.
name: Pinczuk, A.
name: Ashoori, R. C.
name: Dignam, M. M.
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 1993
Subjects: subject: 530 Physik

description: We review a new molecular beam epitaxy (MBE) technique we call cleaved edge overgrowth (CEO), which makes possible fabrication of quantum wires or other lower dimensional quantum structures with atomic precision. CEO is accomplished by performing two separate MBE overgrowths separated by an in situ cleave of the substrate sample. We review our development of this novel method and give several examples of new structures recently fabricated using it.
Renovation permits and the challenge of reducing emissions from legacy buildings
Creators: name: Neuberger, Michaela
Publisher: name: University of British Columbia
Year: 2018

description: Vancouver is among a growing number of cities that have set an 80 percent greenhouse gas (GHG) reduction target by mid-century. Building use represents the largest single source of emissions and roughly half of the existing building stock will still be in use by 2050. To meet the City of Vancouver’s GHG targets, a mechanism will be required to improve the energy efficiency and carbon content of the fuels used in these buildings. Since 2015, the City has introduced energy efficiency upgrade requirements when existing buildings seek renovation permits. Given that this policy pathway was chosen, compliance with renovation permitting requirements is paramount to achieving the City’s building targets. This thesis examines residential building retrofits and permitting processes in Vancouver from the perspectives of those administering the program and stakeholders who have to respond to it. It does not analyse energy efficiency outcomes. Stakeholder interviews, augmented by an online survey, showed that the new energy efficiency requirements led to significant challenges for both stakeholder groups, particularly in terms of training and staff resources, permit delays, and the transparency and consistency of the permitting process. The results further revealed that estimated levels of unpermitted residential renovations are high, particularly in single family homes. Reasons for non-compliance are largely linked to the permitting challenges. Moreover, there appears to be a potential for increased unpermitted retrofit activity to avoid code compliance in the future should energy efficiency requirements become more stringent. These findings, combined with low residential renovation rates over the past decade, demonstrate the importance of streamlining permitting processes and of creating a supportive environment to make compliance desirable. The results paint a clear picture of challenges in reducing GHG emissions from legacy buildings through permits and potential steps to ameliorate these.
title: Применение кремнийсодержащих кормовых добавок в рационах сельскохозяйственных животных
Creators: name: Юрина, Наталья Александровна
name: Осепчук, Денис Васильевич
name: Овсепьян, Ваган Акопович
name: Юрин, Денис Анатольевич
name: Псхациева, Земфира Владимировна
name: Максим, Екатерина Александровна
name: Тлецерук, Ирина Рашидовна
name: Данилова, Александра Александровна
name: Власов, Артем Борисович
Publisher: name: ФГБНУ КНЦЗВ
Year: 2024

description: В данном учебном пособии обобщены материалы исследований и представлены данные об использовании кремнийсодержащих кормовых добавок в рационах сельскохозяйственных животных на основе экспериментов.
Учебное пособие предназначено для научных работников, преподавателей высших учебных заведений, аспирантов, студентов, специалистов сельскохозяйственного производства любых форм собственности.
Учебное пособие одобрено и рекомендовано к изданию на заседании Учёного совета ФГБНУ КНЦЗВ, протокол № 1 от 16.02.2024 г.
Перспективы развития мясного животноводства в северных районах Архангельской области
Creators: name: Григорьева Е.В.
Publisher: name: Эффективное животноводство
Year: 2023
Subjects: мясная продуктивность
качество мяса
холмогорская порода крупного рогатого скота
абердин-ангусская порода
крестьянско-фермерское хозяйство
кормовые ресурсы
рентабельность
meat productivity
quality of meat
Holmogorsk breed
Aberdeen-Angus breed
peasant farm enterprise
feed resources
profitability

description: В статье представлены материалы о перспективах развития мясного животноводства в северных районах Архангельской области с использованием потенциала местной холмогорской породы крупного рогатого скота и её помесей с мясными специализированными породами (абердин-ангусс, герефорд). Изучена мясная продуктивность животных, рассчитана рентабельность производства говядины для малых форм хозяйствования, выявлена оптимальная модель ведения хозяйства.
description: The article presents materials on prospects of meat cattle breeding development in Northern districts of the Arkhangelsk region using the potential of the local Holmogorsk breed and its crosses with meat specialized breeds (Aberdeen-Angus, Hereford). The meat productivity of animals is studied, the profitability of beef production for small forms of farming is calculated, the optimal model of farming is revealed.
Recurring millimeter flares as evidence for star-star magnetic reconnection events in the DQ Tauri PMS binary system
Creators: name: Salter, D. M.
name: Kóspál, Á.
name: Getman, K. V.
name: Hogerheijde, M. R.
name: van Kempen, T. A.
name: Carpenter, J. M.
name: Blake, G. A.
name: Wilner, D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations of the T Tauri spectroscopic binary DQ Tau in April 2008 captured an unusual flare at 3 mm, which peaked at an observed max flux of 0.5 Jy (about 27x the quiescent value). Here we present follow-up mm observations that demonstrate a periodicity to the phenomenon. While monitoring 3 new periastron encounters, we detect flares within 17.5 hrs (or 4.6%) of the orbital phase of the first reported flare, and we constrain the main emitting region to a stellar height of 3.7-6.8 Rstar. The recorded activity is consistent with the proposed picture for synchrotron emission initiated by a magnetic reconnection event when the two stellar magnetospheres of the highly eccentric (e=0.556) binary are believed to collide near periastron as the stars approach a minimum separation of 8 Rstar (~13 Rsolar). The similar light curve decay profiles allow us to estimate an average flare duration of 30 hrs. Assuming one mm flare per orbit, DQ Tau could spend approximately 8% of its 15.8-d orbital period in an elevated flux state. Our analysis of the mm emission provides an upper limit of 5% on the linear polarization. We discuss the extent to which a severely entangled magnetic field structure and Faraday rotation effects are likely to reduce the observed polarization fraction. We also predict that, for the current picture, the stellar magnetospheres must be misaligned at a significant angle or, alternatively, that the topologies of the outer magnetospheres are poorly described by a well-ordered dipole inside a radius of 7 Rstar. Finally, to investigate whether reorganization of the magnetic field during the interaction affects mass accretion, we also present simultaneous optical (VRI) monitoring, as an established tracer of accretion activity in this system. We find that an accretion event can occur coincident in both time and duration with the synchrotron fallout of a magnetic reconnection event.
description: Accepted for publication in A&A, 12 pages, 9 figures, and 6 data tables
Electronic structure and optical properties of short-period α-SnnGem superlattices
Creators: name: Vogl, P.
name: Olajos, Janos
name: Wegscheider, Werner
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 530 Physik

description: Short period α-Sn/Ge strained layer superlattices have been prepared on Ge(001) substrates by low temperature molecular beam epitaxy. We have achieved almost defect free and thermally stable single crystalline structures. Photourrent measurements in a series of Sn1Gem(m>10) superlattices reveal a shift of the fundamental energy gap to smaller energies with decreasing Ge layer thickness m, in good agreement with band structure calculations. A direct fundamental energy gap and large direct band gap absorption is predicted for a slightly increased lateral lattice constant in α-Sn/Ge superlattices.
Αισθητική και Πολιτική: Τέχνη και Ολοκληρωτισμός, η περίπτωση του ναζισμού
Creators: name: Παπαδοπούλου, Γεωργία Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Αισθητική
Ναζισμός
Τέχνη
Aesthetics
Nazism
Art

description: Ο σκοπός της μελέτης είναι να εξετάσει την επίδραση του ναζισμού στην τέχνη. Αναλύει πώς το ναζιστικό καθεστώς προσπάθησε να ελέγξει την τέχνη, επιβάλλοντας τα δικά του αισθητικά και ιδεολογικά πρότυπα. Αυτό περιλάμβανε την απαγόρευση συγκεκριμένων ρευμάτων της τέχνης και καλλιτεχνών, που δεν ταίριαζαν με τα ναζιστικά πρότυπα, και την προώθηση της "γνήσιας" γερμανικής τέχνης. Τέλος, η εργασία εξετάζει επίσης τις συνέπειες αυτής της πολιτικής, δηλαδή με ποιον τρόπο επηρεάστηκαν διάφοροι τομείς της τέχνη. Ποιος ήταν ο ρόλος της ναζιστικής προπαγάνδας και ποιος της λογοκρισίας.
description: The purpose of this study is to examine the impact of Nazism on art. It analyses how the Nazi regime attempted to control art by imposing its own aesthetic and ideological standards. This included banning certain art movements and artists who did not fit with Nazi standards and promoting 'genuine' German art. Finally, the paper also examines the consequences of this policy, and how different areas of art were affected. What was the role of Nazi propaganda and what was the role of censorship.
D6.4 - Demonstration of the PaN software catalogue integration into EOSC - Support document
Creators: name: Jean-Francois Perrin
Publisher: name: Zenodo
Year: 2022
Subjects: EOSC, PANOSC, Photon, Neutron, Software, Catalogue, AAI

description: The Photon and Neutron (PaN) software catalogue was created in 2012 to collect and provide a standard selection of different data processing and simulation software used in the community. The software in the catalogue can be freely consulted and downloaded, and provides an overview of software available for neutron and photon experiments, their use with respect to instruments at experimental facilities and information about their support. The ILL IT team was in charge of the development tasks linked to the upgrade of the software catalogue. The development work took place during winter 2020-2021, the solution was rolled out in production in April 2021. The code of the application has been modernised to support container deployment (i.e. docker) and facilitate maintenance, and the two main functionalities necessary to integrate EOSC (AAI and Rest API) have been added. This document provides more details on the development of PaN software catalogue service.
Chromospheric signatures of small-scale flux emergence as observed with NST and Hinode instruments
Creators: name: Yurchyshyn, V. B.
name: Goode, P. R.
name: Abramenko, V. I.
name: Chae, J.
name: Cao, W.
name: Andic, A.
name: Ahn, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: With the ever increasing influx of high resolution images of the solar surface obtained at a multitude of wavelengths, various processes occurring at small spatial scales have become a greater focus of our attention. Complex small-scale magnetic fields have been reported that appear to have enough stored to heat the chromosphere. While significant progress has been made in understanding small-scale phenomena, many specifics remain elusive. We present here a detailed study of a single event of disappearance of a magnetic dipole and associated chromospheric activity. Based on New Solar Telescope H$α$ data and {\it Hinode} photospheric line-of-sight magnetograms and Ca II H images we report the following. 1) Our analysis indicates that even very small dipoles (elements separated by about 0\arcsec.5 or less) may reach the chromosphere and trigger non-negligible chromospheric activity. 2) Careful consideration of the magnetic environment where the new flux is deposited may shed light on the details of magnetic flux removal from the solar surface. We argue that the apparent collision and disappearance of two opposite polarity elements may not necessarily indicate their cancellation (i.e., reconnection, emergence of a "U" tube or submergence of $ Ω$ loops). In our case, the magnetic dipole disappeared by reconnecting with overlying large-scale inclined plage fields. 3) Bright points seen in off-band H$α$ images are very well-correlated with the Ca II H bright points, which in turn are co-spatial with G-band bright points. We further speculate that, in general, H$α$ bright points are expected be co-spatial with photospheric BPs, however, a direct comparison is needed to refine their relationship.
Microscopic symmetry properties of (001) Si/Ge monolayer superlattices
Creators: name: Eberl, Karl
name: Wegscheider, Werner
name: Schorer, R.
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 1991
Subjects: subject: 530 Physik
subject: 68.65.+g, 61.50.Em, 68.55.Bd

description: Depending on the composition of [001] oriented short period SimGen superlattices (m monolayers Si/n monolayers Ge) there are six different space groups. In case of m+n odd the microscopic periodicity is doubled to 2(m+n) monolayers due to the tetrahedral bonding. We prepared several superlattices namely Si2Ge3, Si3Ge3 and Si4Ge6 with low temperature molecular beam epitaxy. Using selected area diffraction in the transmission electron microscope we found the microscopic periodicity of 10 monolayers for Si2Ge3 and Si4Ge6. For Si3Ge3 the vertical periodicity is six monolayers.
Συσχέτιση μεταξύ των τεχνικών υποβοηθούμενης αναπαραγωγής και των ανωμαλιών του πλακούντα και του ομφάλιου λώρου
Creators: name: Παπαγεωργίου, Γεώργιος Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Υποβοηθούμενη αναπαραγωγή
Ανωμαλίες πλακούντα
Ανωμαλίες ομφάλιου λώρου
Assisted reproduction techniques (art)
Abnormalities of placenta
Umbilical cord abnormalities

description: Οι κυήσεις των τεχνικών υποβοηθούμενης αναπαραγωγής (ART), έχουν συσχετιστεί με μαιευτικές, περιγεννητικές επιπλοκές, καθώς επίσης με αυξημένο κίνδυνο εμφάνισης ανωμαλιών του πλακούντα, όπως προδρομικός πλακούντας, αποκόλληση του πλακούντα και των ανωμαλιών πρόσφυσης του ομφάλιου λώρου. Πιστεύεται ότι οι διαδικασίες και μέθοδοι ART μπορούν να προκαλέσουν κλινικές και μορφολογικές αλλαγές στην ανάπτυξη και λειτουργία του πλακούντα και του ομφάλιου λώρου και ότι αυτές οι αλλαγές εξαρτώνται από την υπογονιμότητα, τις συνθήκες καλλιέργειας και το στάδιο ανάπτυξης των εμβρύων κατά την εμβρυομεταφορά. Ο σκοπός αυτής της διπλωματικής εργασίας, είναι να παρουσιάσει μέσω της βιβλιογραφικής ανασκόπησης, τη συσχέτιση των τεχνικών υποβοηθούμενης αναπαραγωγής με τις ανωμαλίες του πλακούντα και του ομφάλιου λώρου. Για τη βιβλιογραφική ανασκόπηση χρησιμοποιήθηκαν οι βάσεις δεδομένων PubMed και Cochrane.
description: The pregnancies achieved with the use of ART, have been associated with an increased risk of placental abnormalities, including placenta prαevia, placental abruption, and umbilical cord insertion abnormalities.It is believed that ART and procedures can cause clinical and morphological changes in placental and umbilical cord and function and that these changes depend on the culture conditions and the developmental stage of the embryos during embryo transfer.The aim of this thesis is to present through the literature review, the correlation of assisted reproduction techniques and placental and umbilical cord abnormalitiesFor the literature review used the databases Pubmed and Cochrane.
Exploring novel human pancreatic alpha-amylase inhibitors : a departure from carbohydrate-based therapeutics
Creators: name: Tysoe, Christina Rose
Publisher: name: University of British Columbia
Year: 2019

description: Human pancreatic α-amylase (HPA) catalyzes a key step in the degradation of ingested starch. Accordingly HPA activity has been positively correlated to post-prandial blood glucose levels and has been identified as a viable target for inhibition and the development of therapeutics towards the treatment of diabetes and obesity. This work directs the hunt away from traditional saccharide-based inhibitors, which represent all carbohydrate metabolism therapeutics currently in use, to novel inhibitors with improved selectivity and potency. In Chapter 2, the synthesis of flavonol-based HPA inhibitors based upon the structure of Montbretin A, a complex flavonol glycoside, is explored. Through the synthesis of a library of Montbretin A analogues we were able to identify an inhibitor of HPA with a KI of 44 nM that formed new interactions within the amylase active site. Chapter 3 details work on the peptide-based HPA inhibitor helianthamide previously isolated from the Caribbean Sea anemone Stichodactyla helianthus. Recombinant expression of helianthamide as a fusion peptide was achieved in Escherichia coli and Pichia pastoris. Kinetic analysis indicated that recombinant helianthamide is one of the most potent HPA inhibitors known to date, with a KI of 0.01 nM. Structural analysis of the recombinant material indicated that it contained three disulfide bonds in a 1-5, 2-4, 3-6 pattern. Site-directed mutagenesis of helianthamide indicated that disruption of disulfide bonds led to a large decrease in potency, while alanine variants of residues forming polar contacts with HPA’s active site residues led to smaller decreases in potency, indicating that the intact tertiary structure of helianthamide is necessary for blockage of the amylase active site. Small peptides were synthesized based on the sequence of helianthamide, but most showed modest or no inhibition of HPA.
Novel relaxation process in strained Si/Ge superlattices grown on Ge (001)
Creators: name: Wegscheider, Werner
name: Eberl, Karl
name: Abstreiter, Gerhard
name: Cerva, H.
name: Oppolzer, H.
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: 530 Physik

description: A new mode of misfit defect formation has been observed for the first time in high quality Si/Ge strained-layer superlattices grown by molecular beam epitaxy on Ge(001). In order to investigate the transition from coherent to incoherent growth we have studied a set of samples with a varying number of superlattice periods by transmission electron microscopy. High-resolution lattice imaging reveals that strain relaxation occurs through successive glide of 90° (a/6)<211> Shockley partial dislocations on adjacent {111} planes. The resulting microtwins represent the only relaxation mechanism we observed in the samples. Applied Physics Letters is copyrighted by The American Institute of Physics.
Gliese 581d is the first discovered terrestrial-mass exoplanet in the habitable zone
Creators: name: Wordsworth, Robin
name: Forget, François
name: Selsis, Franck
name: Millour, Ehouarn
name: Charnay, Benjamin
name: Madeleine, Jean-Baptiste
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: It has been suggested that the recently discovered exoplanet GJ581d might be able to support liquid water due to its relatively low mass and orbital distance. However, GJ581d receives 35% less stellar energy than Mars and is probably locked in tidal resonance, with extremely low insolation at the poles and possibly a permanent night side. Under such conditions, it is unknown whether any habitable climate on the planet would be able to withstand global glaciation and / or atmospheric collapse. Here we present three-dimensional climate simulations that demonstrate GJ581d will have a stable atmosphere and surface liquid water for a wide range of plausible cases, making it the first confirmed super-Earth (exoplanet of 2-10 Earth masses) in the habitable zone. We find that atmospheres with over 10 bar CO2 and varying amounts of background gas (e.g., N2) yield global mean temperatures above 0 degrees Celsius for both land and ocean-covered surfaces. Based on the emitted IR radiation calculated by the model, we propose observational tests that will allow these cases to be distinguished from other possible scenarios in the future.
description: Accepted to the Astrophysical Journal Letters; 9 pages, 1 table, 4 figures
D4.17 New version of the Aïoli platform
Creators: name: Manuel, Adeline
name: De Luca, Livio
name: Cao, Isabelle
name: Zanetti, Theo
Publisher: name: Zenodo
Year: 2021

description: Archaeologists, architects, engineers, materials specialists, teachers, curators, and restorers of cultural property, contribute to the daily knowledge and conservation of heritage artefacts. For many years, the development of digital technologies has produced important results in the collection, visualisation and indexing of digital resources. Whilst these advances have made it possible to introduce new tools that are making documentation practises evolve within the cultural heritage community, the management of multi-dimensional and multi-format data introduces new problems and challenges, in particular the development of relevant analysis and interpretationmethods, the sharing and correlation of heterogeneous data among several actors and contexts, and the centralised archiving of documentation results for long-termpreservation purposes. Despite their different approaches and tools for observation, description and analysis, the actors of cultural heritage documentation all have a common interest and central focus: the heritage object, the physical one, whether it is a site, a building, a sculpture, a painting, a work of art, or an archaeological fragment. This is the starting point for the development of "aïoli", a reality-based 3D annotation platform, which allows a multidisciplinary community to build semantically enriched 3D descriptions of heritage artefacts from simple images and spatialized annotations coupled with additional resources. This platform introduces an innovative framework for the comprehensive, large-scale collaborative documentation of cultural heritage by integrating state-of-the-art technological components (image-based 3D reconstruction, 2D-3D spreading and correlation of semantic annotations, multi-layered analysis of qualitative and quantitative attributes, etc.) within a cloud infrastructure accessible via web interfaces from PCs, tablets, and smartphones online and onsite. This document describes the evolutions of Aioli and the new features implemented within the framework of the SSHOC project since its previous version. The development version of Aioli is currently hosted on one of the CNRS MAP servers and can be accessed through the following link: https://absinthe.aioli.map.cnrs.fr/index. A beta testing version of the platform will be available at https://beta.aioli.map.cnrs.fr/index (send mail to contact@aioli.cloud for an account creation).
The structure of strongly additive states and Markov triplets on the CAR algebra
Creators: name: Jencova, Anna
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We find a characterization of states satisfying equality in strong subadditivity of entropy and of Markov triplets on the CAR algebra. For even states, a more detailed structure of the density matrix is given.
description: 11 pages
Transit Analysis Package (TAP and autoKep): IDL Graphical User Interfaces for Extrasolar Planet Transit Photometry
Creators: name: Gazak, J. Zachary
name: Johnson, John A.
name: Tonry, John
name: Eastman, Jason
name: Mann, Andrew W.
name: Agol, Eric
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present an IDL graphical user interface-driven software package designed for the analysis of extrasolar planet transit light curves. The Transit Analysis Package (TAP) software uses Markov Chain Monte Carlo (MCMC) techniques to fit light curves using the analytic model of Mandel and Agol (2002). The package incorporates a wavelet based likelihood function developed by Carter and Winn (2009) which allows the MCMC to assess parameter uncertainties more robustly than classic chi-squared methods by parameterizing uncorrelated "white" and correlated "red" noise. The software is able to simultaneously analyze multiple transits observed in different conditions (instrument, filter, weather, etc). The graphical interface allows for the simple execution and interpretation of Bayesian MCMC analysis tailored to a user's specific data set and has been thoroughly tested on ground-based and Kepler photometry. AutoKep provides a similar GUI for the preparation of Kepler MAST archive data for analysis by TAP or any other analysis software. This paper describes the software release and provides instructions for its use.
description: 8 pages, 2 figures
Infrared optical properties and band structure of α-Sn/Ge superlattices on Ge substrates
Creators: name: Olajos, Janos
name: Vogl, P.
name: Wegscheider, Werner
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 1991
Subjects: subject: 530 Physik
subject: 78.65.Gb, 71.25.Tn, 73.20.Dx

description: Short-period α-Sn/Ge strained-layer superlattices have been prepared on [001] Ge substrates by low-temperature molecular-beam epitaxy. We have achieved almost-defect-free and thermally stable single-crystalline structures. Photocurrent measurements in a series of Sn1Gem (m>10) superlattices reveal a shift of the fundamental energy gap to smaller energies with decreasing Ge layer thickness m, in good agreement with band-structure calculations. A direct fundamental energy gap is predicted for a slightly increased lateral lattice constant in α-Sn/Ge superlattices.
Spin Hall Drag in electronic bilayers
Creators: name: Badalyan, Samvel
name: Vignale, Giovanni
Publisher: name: Universität Regensburg
Year: 2009
Subjects: subject: 530 Physik

description: We predict a new effect in electronic bilayers: the Spin Hall Drag. The effect consists in the generation of spin accumulation across one layer by an electric current along the other layer. It arises from the combined action of spin-orbit and Coulomb interactions. Our theoretical analysis, based on the Boltzmann equation formalism, identifies two main contributions to the spin Hall drag resistivity: the side-jump contribution, which dominates at low temperature, going as T2, and the skew-scattering contribution, which is proportional to T3. The induced spin accumulation is large enough to be detected in optical rotation experiments.