cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evolution of dynamic fibrils from the cooler chromosphere to the hotter corona
Creators: name: Mandal, Sudip
name: Peter, Hardi
name: Chitta, Lakshmi Pradeep
name: Solanki, Sami K.
name: Cuadrado, Regina Aznar
name: Schühle, Udo
name: Teriaca, Luca
name: Sykora, Juan Martínez
name: Berghmans, David
name: Auchère, Frédéric
name: Parenti, Susanna
name: Zhukov, Andrei N.
name: Buchlin, Éric
name: Verbeeck, Cis
name: Kraaikamp, Emil
name: Rodriguez, Luciano
name: Long, David M.
name: Barczynski, Krzysztof
name: Pelouze, Gabriel
name: Smith, Philip J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Dynamic fibrils (DFs) are commonly observed chromospheric features in solar active regions. Recent observations from the Extreme Ultraviolet Imager (EUI) aboard the Solar Orbiter have revealed unambiguous signatures of DFs at the coronal base, in extreme ultraviolet (EUV) emission. However, it remains unclear if the DFs detected in the EUV are linked to their chromospheric counterparts. Simultaneous detection of DFs from chromospheric to coronal temperatures could provide important information on their thermal structuring and evolution through the solar atmosphere. In this paper, we address this question by using coordinated EUV observations from the Atmospheric Imaging Assembly (AIA), Interface Region Imaging Spectrograph (IRIS), and EUI to establish a one-to-one correspondence between chromospheric and transition region DFs (observed by IRIS) with their coronal counterparts (observed by EUI and AIA). Our analysis confirms a close correspondence between DFs observed at different atmospheric layers, and reveals that DFs can reach temperatures of about 1.5 million Kelvin, typical of the coronal base in active regions. Furthermore, intensity evolution of these DFs, as measured by tracking them over time, reveals a shock-driven scenario in which plasma piles up near the tips of these DFs and, subsequently, these tips appear as bright blobs in coronal images. These findings provide information on the thermal structuring of DFs and their evolution and impact through the solar atmosphere.
description: Accepted for publication in A&A Letters. Animation files are available https://drive.google.com/drive/folders/17-fqQz_P2T18llJ1jB6MJISMRvT5063F?usp=sharing
The Perseus ALMA Chemical Survey (PEACHES). III. Sulfur-bearing species tracing accretion and ejection processes in young protostars
Creators: name: de la Villarmois, E. Artur
name: Guzman, V. V.
name: Yang, Y. -L.
name: Zhang, Y.
name: Sakai, N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: (Abridged) Sulfur chemistry is poorly understood in the process of low-mass star and planet formation, where the main carriers of sulfur are still unknown. Despite the fact that simple S-bearing molecules are usually detected toward embedded sources, large surveys of S-bearing molecules with high angular resolution and sensitive observations are currently lacking. The goal of this work is to present an unbiased survey of simple sulfur-bearing species in protostars and provide new statistics. In addition, we investigate the role of S-bearing molecules in accretion processes and the connection between (non-)detection of complex organic molecules (COMs) and S-related species. We present the observations of sulfur-bearing species that are part of the Perseus ALMA Chemical Survey (PEACHES). We analyzed a total of 50 Class 0/I sources with an average angular resolution of about 0.6" (~180 au) in ALMA band 6. We present detection rates for CS, SO, 34SO, and SO2. The SO/34SO ratio is lower than the canonical value of 22 and the lowest values are found for those sources rich in COMs. This ratio, therefore, seems to be a good tracer of the inner high-density envelope. The detection of multiple COMs seems to be related to the presence of collimated outflows and SO2 emission seems to trace the warm gas in those sources where CH3OH is also detected. The SO2 abundances toward the PEACHES sample are, on average, two orders of magnitude lower than values from the Ophiuchus star-forming region and comparable with sources in Taurus, suggesting that the sulfur depletion in the gas-phase could depend on the external UV radiation. Finally, the SO2 emission detected in different evolutionary stages seems to arise from different physical mechanisms: high column density of warm material in Class 0 sources, shocks in Class I/II, and exposure to UV radiation from the protostar in more evolved Class II disks.
description: 31 pages, 17 Figures (including appendix)
Origin and implications of zero degeneracy in networks spectra
Creators: name: Yadav, Alok
name: Jalan, Sarika
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Physics and Society (physics.soc-ph)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Spectra of real world networks exhibit properties which are different from the random networks. One such property is the existence of a very high degeneracy at zero eigenvalues. In this work, we provide possible reasons behind occurrence of the zero degeneracy in various networks spectra. Comparison of zero degeneracy in protein-protein interaction networks of six different species and in their corresponding model networks sheds light in understanding the evolution of complex biological systems.
description: 5 pages, 3 figures
Structural properties and vibrational modes Si34 of Si46 and clathrates
Creators: name: Kahn, D.
name: Lu, J.P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1997

description: The structural and vibrational properties of the silicon clathrates (Formula presented) and (Formula presented) are studied using the (Formula presented) tight-binding density-matrix method of Li, Nunes, and Vanderbilt. The elastic moduli are found to be similar to those of cubic-diamond silicon. The large unit cells lead to complex Raman and infrared spectra which are obtained by calculating the full dynamical matrix directly. Certain modes are identified as molecularlike. Dispersion relations as well as the vibrational density of states are computed. The latter shows an unusual gap at approximately 16.5 THz for both clathrates. The mode-Grüneisen parameters are also calculated.
294. Rituximab versus conventional therapeutic strategy for remission induction in EGPA: double-blind, randomized, controlled tria
Creators: name: Terrier1, Benjamin
Publisher: name: Zenodo
Year: 2022
Subjects: Vasculitis
ANCA
Abstracts
Giant Cell Arthritis
MPA
GPA
EGPA
Takayasu
IgA vasculitis

description: Background: Eosinophilic granulomatosis with polyangiitis (EGPA) is an eosinophilic ANCA-associated vasculitis. Glucocorticoids, alone or in combination with cyclophosphamide in severe forms, induce remission in most patients with EGPA. Rituximab, an anti-CD20 monoclonal antibody depleting B cells, demonstrated efficacy in other ANCA-associated vasculitides. Rituximab might be indicated in the treatment of EGPA. Methods: This phase 3, comparative, multicenter, randomized, controlled, double-blind and superiority research compared rituximab-based regimen with conventional therapeutic strategies for the induction of remission. Patients with newly diagnosed or relapsing disease were randomized in a 1:1 ratio to receive: the experimental therapeutic strategy based on the use of rituximab, or the conventional therapeutic strategy based on Five-Factor Score (FFS)-assessed disease severity. The primary end point was the rate of patients who achieved remission at day 180 as defined by BVAS=0 and a prednisone dose ≤7.5 mg/day. Secondary end points were duration of remission during the study period, the average daily glucocorticoid dose and safety. Results: A total of 105 participants underwent randomization (74 with newly diagnosed EGPA, 63 with FFS=0, 59 with negative ANCA), with 52 participants assigned to receive rituximab and 53 to conventional strategy. At day 180, remission was achieved in 33 patients in the rituximab group (63.5%) and in 32 patients in the conventional strategy group (60.4%) (relative risk, 1.05; 95% confidence interval, 0.78 to 1.42, P=0.75). At day 360, remission was achieved in 31 patients in the rituximab group (59.6%) and in 34 patients in the conventional strategy group (64.2%) (relative risk, 1.08; 95% CI, 0.80 to 1.45, P=0.63). Mean duration of remission was 16.4 (10.37) and 16.2 (11.68) weeks in the rituximab group and the conventional strategy group, respectively. All relapse and major relapse rates were comparable between the two groups. SF-36 was similar between the two groups. However, health assessment questionnaire (HAQ) at day 180 and day 360 (p=0.07 and p=0.09, respectively) and vasculitis damage index (VDI) at day 360 (p=0.07) tended to be better in the rituximab group. There was no significant difference in average daily glucocorticoid dose between the two arms, with an area under the curve of 4591 mg in the rituximab group and 4453 mg for the conventional strategy group. Conclusions: In EGPA patients participating to this double-blind randomized controlled trial, rituximab was not superior to conventional therapeutic strategy based on FFS to induce vasculitis remission Disclosures: None
Effects of orientational disorder on the electronic structure and transport in AxC70
Creators: name: Gelfand, M.P.
name: Lu, J.P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: Effects of orientational disorder on electronic structures and transport properties of a variety of AxC70 phases are investigated using a tight-binding Hamiltonian and linear-response theory. The conduction bands are significantly affected by the disorder, while valence bands are less sensitive to it. The overlap between conduction bands increases with the disorder, which could make some C70 fullerides more metallic in disordered states than in ordered states. Large residual resistivities are predicted for both A1C70 and A4C70.
Preprocessing in small groups: Three simulated galaxies interacting prior to cluster infall
Creators: name: Lokas, Ewa L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The formation of galaxy clusters is a complicated process that probably involves the accretion of galaxies in groups, as observed in nearby clusters, such as Virgo and Fornax. The members of the groups undergo "preprocessing" prior to cluster infall, which affects their stellar populations and morphology. In this paper I present an extreme example of such an accretion event selected from the IllustrisTNG100 simulation. The group, composed of three full-sized disky galaxies and a number of smaller satellites, is accreted early, with the first pericenter around the cluster at redshift z=1.3. Before the infall, the three galaxies interact strongly in pairs within the group, which produces tidally induced bars in the two more massive ones. The interactions also lead to mass exchange and trigger some star formation activity resulting in temporary rejuvenation of their stellar populations. After infall, they all undergo seven pericenter passages around the cluster, experiencing strong mass loss in the dark matter and gas components, as well as reddening of the stellar populations. Their tidally induced bars are, however, preserved and even enhanced probably due to the loss of gas via ram-pressure stripping in the intracluster medium. The study demonstrates that group accretion can happen very early in cluster formation and proposes another scenario for the formation of tidally induced bars.
description: 5 pages, 3 figures, accepted for publication in A&A
ИСПОЛЬЗОВАНИЕ ПОЛУЧЕННЫХ ВО ВРЕМЯ ПОЛЕТА НА САМОЛЕТЕ ИЗМЕРЕНИЙ СКОРОСТИ СЧЕТА ЗАРЯЖЕННОЙ КОМПОНЕНТЫ КОСМИЧЕСКИХ ЛУЧЕЙ В КАЧЕСТВЕ ОДНОГО ИЗ МЕТОДОВ ВЕРИФИКАЦИИ ПРОГРАММНОГО КОМПЛЕКСА RUSCOSMICS
Creators: name: Германенко, А.В.
name: Маурчев, Е.А.
name: Михалко, Е.А.
Publisher: name: Кольский научный центр Российской академии наук
Year: 2019

description: В Полярном Геофизическом Институте при помощи комплексной системы мониторинга непрерывно ведется регистрация адронной и электромагнитной компоненты вторичного космического излучения (ВКИ). Cцелью регистрации заряженных частиц (электроны, мюоны, протоны) иточной привязки полученных данных к месту и времени был разработан специальный детектор с GPSмодулем и системой сбора под управлением платы микропроцессора Arduino. При помощи этого устройства в течение 2018 г. был проведен ряд наземных измерений, а осенью 2018 г. прибор был установлен на борту аэробуса и произвел запись скорости счета во время взлета, занятии высоты и посадке на маршруте г. Мурманск –г. Москва –г. Минеральные Воды. Таким образом, представленные результаты позволяют произвести верификацию данных моделирования не в одной точке, а сразу для нескольких значений географических координат, в том числе и для интервала высот от уровня земли до 10 км.
Педагогические науки,Выпуск 1 (68) 2023
Creators: name: АО «КазУМОиМЯ им.Абылай хана»
Publisher: name: АО «КазУМОиМЯ им.Абылай хана»
Year: 2023

description: Педагогические науки,Выпуск 1 (68) 2023
293. Outcomes of kidney transplantation in childhood-onset ANCA-associated vasculitis. A multicentre study
Creators: name: Allinovi1, Marco
Publisher: name: Zenodo
Year: 2022
Subjects: Vasculitis
ANCA
Abstracts
Giant Cell Arthritis
MPA
GPA
EGPA
Takayasu
IgA vasculitis

description: Background: Kidney failure (KF) is a major complication of ANCA-associated vasculitis (AAV). Kidney transplantation (KTx) has been reported as an effective and safe therapeutic option in adult patients with AAV and KF while there are limited data for children. We aimed to assess outcomes of KTx in childhood-onset AAV among a large multicentre cohort of patients. Methods: Patients with AAV onset during childhood (≤18 years) who received KTx because of KF due to vasculitis-related renal involvement were identified in 21 European and Northern American centres and their data collected. We analysed patient and graft survival, rates of AAV relapse, incidence of transplant rejection and of severe infections. Results: We included 55 patients, of whom 38 (69%) had microscopic polyangiitis (MPA) and 17 (31%) granulomatosis with polyangiitis (GPA). Mean age at diagnosis and at transplantation were respectively 12 (interquartile range, IQR 9-14) and 14 (IQR 12-16) years. Donation was from a living donor in 20 (36%) patients and from a deceased donor in the remainder 35 (64%). At the time of transplantation, all patients had achieved vasculitis remission (BVAS=0) and 14/54 (26%) had positive ANCA. All but one patient received calcineurin inhibitors (84% tacrolimus, 13% cyclosporine), 13 (24%) azathioprine, and 36 (66%) mycophenolate mofetil, while mTOR inhibitors were used in only two patients (3%). The maintenance regimen based on prednisone, mycophenolate mofetil, and tacrolimus was administered to 33 (60%) patients. Further patient characteristics are reported in Table 1. The median follow-up was 54 months (IQR 21-91). Acute rejection was reported by 25 (45%) patients, 12 of whom experienced it during the first 12 months after transplantation, while chronic rejection was established in three (5%). AAV relapse occurred in five patients. Positive ANCA at transplantation was significantly associated with the risk of relapse (29% vs 2%, p=0.02). At last follow-up, 21 (38%) patients had developed graft dysfunction (eGFR <60 ml/min/1.73 m2) and seven (13%) of them graft failure. Rejection and positive ANCA at the time of transplantation but not the type of AAV, ELISA specificity and donor were significantly associated with the risk of graft dysfunction (Figure 1). Infections occurred in 31 (53%) patients, with 12 (22%) experiencing pyelonephritis, eight (14%) CMV infection, five (9%) EBV viraemia and four (7%) BK virus infection. Neither deaths nor malignancies were reported. Conclusions: KTx in childhood-onset AAV has good graft and patient survival and few complications. The risk of vasculitis relapse appears low. Positive ANCA at the time of transplantation seem an important risk factor for both AAV relapse and the development of graft dysfunction. Disclosures: None
Detectability of Local Water Reservoirs in Europa's Surface Layer under Consideration of Coupled Induction
Creators: name: Winkenstern, J.
name: Saur, J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The icy moon Europa is a primary target for the study of ocean worlds. Its subsurface ocean is expected to be subject to asymmetries on global scales (tidal deformation) and local scales (chaos regions, fractures). Here, we investigate the possibility to magnetic sound local asymmetries by calculating the induced magnetic fields generated by a radially symmetric ocean and a small, spherical water reservoir between the ocean and Europa's surface. The consideration of two conductive bodies introduces non-linear magnetic field coupling between them. We construct an analytical model to describe the coupling between two conductive bodies and calculate the induced fields within the parameter space of possible conductivity values and icy crust thicknesses. Given the plasma magnetic field perturbations, we find that a reservoir cannot be detected during a flyby at 25 km altitude using electromagnetic induction. Potential detection of liquid water reservoirs can be achieved by deploying magnetometers on Europa's surface, where one magnetometer is placed directly on the target region of interest and a second one in the nearby vicinity as reference to distinguish from global asymmetries. With this method, the smallest reservoir that can be detected has a radius of 8 km and a conductivity of 30 S/m. Larger reservoirs are resolvable at lower conductivities, with a 20 km reservoir requiring a conductivity of approximately 5 S/m.
Zehn Jahre Liturgiereform
Creators: name: Greiner, Franz
name: Siebel, Wigand
name: Lehmann, Karl
Publisher: name: Internationale katholische Zeitschrift Communio
Year: 2022

description: Internationale katholische Zeitschrift Communio, Bd. 3 Nr. 1 (1974): Internationale katholische Zeitschrift Communio, Band 3, Heft 1
Examples of DLR states which are not weak limits of finite volume Gibbs measures with deterministic boundary conditions
Creators: name: Coquille, Loren
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82B05, 82B20, 82B26

description: We review what is known about the structure of the set of weak limiting states of the Ising and Potts models at low enough temperature, and in particular we prove that the mixture $\frac12(μ^\pm+μ^\mp)$ of two reflection-symmetric Dobrushin states of the 3-dimensional Ising model at low enough temperature is a Gibbs state which is not a limit of finite-volume measures with deterministic boundary conditions. Finally we point out what the issues are in order to extend the analysis to the Potts model, and give a few conjectures.
description: 15 pages, 5 figures. Revised version
ОСОБЕННОСТИ ВРЕМЕННОГО ХОДА ИНТЕНСИВНОСТИ ГАЛАКТИЧЕСКИХ КОСМИЧЕСКИХ ЛУЧЕЙ В МИНИМУМЕ МЕЖДУ 24 И 25 СОЛНЕЧНЫМИ ЦИКЛАМИ
Creators: name: Калинин, М.С.
name: Базилевская, Г.А.
name: Крайнев, М.Б.
name: Свиржевская, А.К.
name: Свиржевский, Н.С.
name: Стожков, Ю.И.
name: Филиппов, М.В.
Publisher: name: Кольский научный центр Российской академии наук
Year: 2019

description: В работе проведён анализ данных стратосферных измерений ГКЛ на фазе спада солнечной активности 24-го цикла. Интегральная интенсивность ГКЛ с энергией T100 МэВ сопоставляется с основными солнечными данными, а также с гелиосферными модулирующими факторами –магнитным полем (ГМП), солнечным ветром и углом наклона гелиосферного токового слоя (ГТС). Временной ход интенсивности моделировался с помощью уравнения модуляции ГКЛ, в котором коэффициенты переноса формировались на основе данных по гелиосферным модулирующим факторам, полученным в измерениях около Земли. В области высоких энергий (T10 ГэВ) модельное описание интенсивность ГКЛ сопоставлено с данными мировой сети нейтронных мониторов, в области низких энергий (200 МэВ) –с данными космического аппарата ACE. Сделан вывод, что основной причиной более медленного роста интенсивности при подходе к минимуму 25-го цикла, по сравнению с ожидаемым, является напряженность ГМП, более высокая, чем в предыдущем минимуме 24-го цикла.
Particle-Hole Symmetry and the Composite Fermi Liquid
Creators: name: Barkeshli, Maissam
name: Mulligan, Michael
name: Fisher, Matthew P. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The half-filled Landau level is widely believed to be described by the Halperin-Lee-Read theory of the composite Fermi liquid (CFL). In this paper, we develop a theory for the particle-hole conjugate of the CFL, the Anti-CFL, which we argue to be a distinct phase of matter as compared with the CFL. The Anti-CFL provides a possible explanation of a recent experiment [Kamburov et. al., Phys. Rev. Lett. 113, 196801 (2014)] demonstrating that the density of composite fermions in GaAs quantum wells corresponds to the electron density when the filling fraction $ν< 1/2$ and to the hole density when $ν> 1/2$. We introduce a local field theory for the CFL and Anti-CFL in the presence of a boundary, which we use to study CFL - Insulator - CFL junctions, and the interface between the Anti-CFL and CFL. We show that the CFL - Anti-CFL interface allows partially fused boundary phases in which "composite electrons" can directly tunnel into "composite holes," providing a non-trivial example of transmutation between topologically distinct quasiparticles. We discuss several observable consequences of the Anti-CFL, including a predicted resistivity jump at a first order transition between uniform CFL and Anti-CFL phases. We also present a theory of a continuous quantum phase transition between the CFL and Anti-CFL. We conclude that particle-hole symmetry requires a modified view of the half-filled Landau level, in the presence of strong electron-electron interactions and weak disorder, as a critical point between the CFL and the Anti-CFL.
description: 29 pages, 8 figures. v2 includes additional discussion of Landau level mixing (Sec. VII D) and paired composite fermion states
Shape of large single- and multiple-shell fullerenes
Creators: name: Yang, W.
name: Lu, J.P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1994

description: The morphology of multiple-shell fullerenes is investigated by ab initio calculations using Yang's O(N) method. It is found that for large single-shell fullerenes with Ih symmetry, the spherical morphology has lower energy than that of polyhedrons. The formation energy per atom follows a simple scaling law. Including an estimate of intershell van de Waals interactions leads to the conclusion that spherical multiple-shell fullerenes are likely the most stable structure of large carbon clusters. These results are in good agreement with recent experiments.
Chiral Algebras for Trinion Theories
Creators: name: Lemos, Madalena
name: Peelaers, Wolfger
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It was recently understood that one can identify a chiral algebra in any four-dimensional N=2 superconformal theory. In this note, we conjecture the full set of generators of the chiral algebras associated with the T_n theories. The conjecture is motivated by making manifest the critical affine module structure in the graded partition function of the chiral algebras, which is computed by the Schur limit of the superconformal index for T_n theories. We also explicitly construct the chiral algebra arising from the T_4 theory. Its null relations give rise to new T_4 Higgs branch chiral ring relations.
description: 22 pages, v2: minor typos corrected
СТАТИСТИКА ИЗМЕРЕНИЯ РАДИАЦИИ В АТМОСФЕРЕ НА ВЫСОТАХ РЕЙСОВЫХ САМОЛЕТОВ В 2017-2018 ГОДАХ
Creators: name: Козелов, Б.В.
Publisher: name: Кольский научный центр Российской академии наук
Year: 2019

description: В докладе анализируются результаты измерения радиации на высотах рейсовых самолетов, проведенные в 2017-2018 гг на трассах Мурманск (Апатиты)-Москва (Ст.Петербург), Осло-Тромсё-Лонгир и др. Измерения проводились дозиметром радиации Atom Simple для смартфона/планшета, изготовленным НПП КБ «Радар» на основесчётчика Гейгера СБМ-20[https://kbradar.org/p68397049-dozimetr-radiatsii-atom.html]. Дозиметр чувствителен к бета (от 300 кэВ), гамма и рентгеновскому (30 кэВ -3 МэВ) излучению. Использовалось стандартное приложение AtomSimple для привязки к географическому положению и информация о высоте полета самолетов с ресурса Flightradar24 [https://www.flightradar24.com]. Обсуждаются зависимости от высоты, широты, тренды и возможность выделения сигнала от вариаций космических лучей на высотах рейсовых самолетов.
Forecasting Solar Energetic Proton Integral Fluxes with Bi-Directional Long Short-Term Memory Neural Networks
Creators: name: Nedal, Mohamed
name: Kozarev, Kamen
name: Arsenov, Nestor
name: Zhang, Peijin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Solar energetic particles are mainly protons and originate from the Sun during solar flares or coronal shock waves. Forecasting the Solar Energetic Protons (SEP) flux is critical for several operational sectors, such as communication and navigation systems, space exploration missions, and aviation flights, as the hazardous radiation may endanger astronauts', aviation crew and passengers' health, the delicate electronic components of satellites, space stations, and ground power stations. Therefore, the prediction of the SEP flux is of high importance to our lives and may help mitigate the negative impacts of one of the serious space weather transient phenomena on the near-Earth space environment. Numerous SEP prediction models are being developed with a variety of approaches, such as empirical models, probabilistic models, physics-based models, and AI-based models. In this work, we use the bi-directional long short-term memory (BiLSTM) neural network model architecture to train SEP forecasting models for 3 standard integral GOES channels (>10 MeV, >30 MeV, and >60 MeV) with 3 forecast windows (1-day, 2-day, and 3-day ahead) based on daily data obtained from the OMNIWeb database from 1976 to 2019. As the SEP variability is modulated by the solar cycle, we select input parameters that capture the short-term, typically within a span of a few hours, and long-term, typically spanning several days, fluctuations in solar activity. We take the F10.7 index, the sunspot number, the time series of logarithm of the x-ray flux, the solar wind speed, and the average strength of the interplanetary magnetic field as input parameters to our model. The results are validated with an out-of-sample testing set and benchmarked with other types of models.
description: 32 pages, 12 figures, and 4 tables
СРАВНЕНИЕ РЕЗУЛЬТАТОВ РЕГУЛЯРНОГО БАЛЛОННОГО МОНИТОРИНГА ГКЛ И ПРЯМЫХ ИЗМЕРЕНИЙ ИНТЕНСИВНОСТИ ГКЛ В ЭКСПЕРИМЕНТАХ PAMELAИ AMS-2
Creators: name: Крайнев, М.Б.
Publisher: name: Кольский научный центр Российской академии наук
Year: 2020

description: Результатом регулярного баллонного мониторинга (РБМ) космических лучей в атмосфере Земли является один из наиболее длинных рядов однородных измерений характеристик галактических космических лучей (ГКЛ) в Мурманской и Московской областях с 1957 г. и в обс. Мирный (Антарктида) с 1962 г.Однако, ряды данных как РБМ, так и хорошо известного нейтронного мониторинга космических лучей относятся к скоростям счёта детекторов вторичных космических лучей и, чтобы использовать их для сравнения с результатами измерений или расчётов ГКЛ в гелиосфере, необходимо откалибровать эти скорости счёта в терминах интенсивности первичных ГКЛ около Земли. В статье некоторые ожидаемые из эксперимента РБМ характеристики ГКЛ сравниваются с результатами прямых измерений в экспериментах PAMELA(06.2006-01.2016 гг.) и AMS-2 (05.2011-по н./вр.).Оценены коэффициенты перехода от интегральных интенсивностей протонов, определённых по данным РБМ, к тем же характеристикам, измеренным в экспериментах PAMELAи AMS-2. Обсуждаются пути уточнения полученных связей, а также делается вывод, что для улучшения понимания связи результатов РБМ с характеристиками первичных ГКЛ могут быть полезны расчёты каскада космических лучей в атмосфере.
Yu, Salamon, and Lu reply
Creators: name: Salamon, M.B.
name: Lu, J.P.
name: Yu, R.C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: The thermal conductivity anomaly in YBa2Cu307-„has been attributed [I] entirely to the phonon contribution tcL, due to reduced electron-phonon scattering below T,. As demonstrated in the Comment of Cohn et al. [2], with five or more parameters available the data can be fit equally well with or without a charge-carrier contribution x,. The goal of our analysis [3] was to bring the thermal conductivity data into agreement with the emerging picture of quasiparticle transport below T,. We made the simplifying assumption that quasiparticle and phonon systems are largely decoupled, and chose a particularly simple form for the underlying tcL. No assumption was made concerning the Wiedemann-Franz ratio beyond asserting that tc, should be temperature independent above T,.
Multiomics analyses reveal dynamic bioenergetic pathways and functional remodeling of the heart during intermittent fasting
Creators: name: Arumugam, Thiruma
name: Alli-Shaik, Asfa
name: Liehn, Elisa A
name: Selvaraji, Sharmelee
name: Poh, Luting
name: Rajeev, Vismitha
name: Cho, Yoonsuk
name: Cho, Yongeun
name: Kim, Jongho
name: Kim, Joonki
name: Swa, Hannah LF
name: Hao, David Tan Zhi
name: Rattanasopa, Chutima
name: Fann, David Yang-Wei
name: Mayan, David Castano
name: Ng, Gavin Yong-Quan
name: Baik, Sang-Ha
name: Mallilankaraman, Karthik
name: Gelderblom, Mathias
name: Drummond, Grant
name: Sobey, Christopher
name: Kennedy, Brian K
name: Singaraja, Roshni R
name: Mattson, Mark P
name: Jo, Dong-Gyu
name: Gunaratne, Jayantha
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 32
subject: Biomedical and clinical sciences
classificationCode: 31
subject: Biological sciences
subject: FOS: Biological sciences
classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Intermittent fasting (IF) has been shown to reduce cardiovascular risk factors in both animals and humans, and can protect the heart against ischemic injury in models of myocardial infarction. However, the underlying molecular mechanisms behind these effects remain unclear. To shed light on the molecular and cellular adaptations of the heart to IF, we conducted comprehensive system-wide analyses of the proteome, phosphoproteome, and transcriptome, followed by functional analysis. Using advanced mass spectrometry, we profiled the proteome and phosphoproteome of heart tissues obtained from mice that were maintained on daily 12- or 16 hr fasting, every-other-day fasting, or ad libitum control feeding regimens for 6 months. We also performed RNA sequencing to evaluate whether the observed molecular responses to IF occur at the transcriptional or post-transcriptional levels. Our analyses revealed that IF significantly affected pathways that regulate cyclic GMP signaling, lipid and amino acid metabolism, cell adhesion, cell death, and inflammation. Furthermore, we found that the impact of IF on different metabolic processes varied depending on the length of the fasting regimen. Short IF regimens showed a higher correlation of pathway alteration, while longer IF regimens had an inverse correlation of metabolic processes such as fatty acid oxidation and immune processes. Additionally, functional echocardiographic analyses demonstrated that IF enhances stress-induced cardiac performance. Our systematic multi-omics study provides a molecular framework for understanding how IF impacts the heart's function and its vulnerability to injury and disease.
289. Clinical features and treatment of patients with severe skin changes in IgA vasculitis: multicenter study
Creators: name: Sestan1, Mario
Publisher: name: Zenodo
Year: 2022
Subjects: Vasculitis
ANCA
Abstracts
Giant Cell Arthritis
MPA
GPA
EGPA
Takayasu
IgA vasculitis

description: Background: Skin changes, which are a mandatory classification criterion of IgA vasculitis (IgAV), are most commonly typical, but approximately 2% of children may experience the most severe changes (hemorrhagic bullae and necroses). The purpose of this research was to determine whether such changes were also associated with a more severe clinical picture and the need for more intensive therapy. Methods: The study included pediatric patients with the most severe skin manifestations as part of IgAV from 8 international tertiary university medical centers. Patients were diagnosed by EULAR/PRES/PRINTO criteria. Data were analyzed descriptively and using the Fisher test. Results: A total of 41 patients with the most severe skin changes in IgAV were included in the study, of which 26 (63.4%) were male, with a median (range) age of 8.75 (1.5-17.08) years at the disease onset. Control group consisted of 596 IgAV patients who did not develop bullae and/or necroses. In most patients, IgAV started with skin manifestations (62.5%). The time from the onset of the first symptom to the first bullous/necrotic change was 4.5 (0-180) days, and from the onset of the first purpuric change to the first bullous/necrotic change 3.5 (0-180) days. Total duration of bullous/necrotic changes was 10 (4-780) days. The most prominent trigger of IgAV were infections, present in 57.5% patients. The distribution of bullae and necroses followed the distribution of the purpuric changes, predominantly affecting the lower extremities in 70% of the patients. Sequelae of the skin changes were not present in 75% of the patients, while the rest had scars and pigmentation changes. 40% of these patients developed nephritis, and the most common finding was a combination of hematuria and proteinuria. The patients with severe cutaneous manifestations were older in comparison to other patients with IgAV (mean age 8.75 years vs. 7.17 years, p = 0.008) and had statistically more frequently affected kidneys (39% vs. 20.6%, p = 0.01), however, no one developed chronic renal disease. All these patients were treated: 75% of them received methylprednisolone with a median (range) cumulative dose of 33 (4-170.46) mg/kg for a median (range) of 17 (3-298) days, while 40% were treated with nonsteroidal anti-inflammatory drugs for 5 (2-30) days. Other drugs were administered sporadically. They were significantly more frequently treated with systemic glucocorticoids (90.2% vs. 37.2%, p < 0.001). Conclusions: Patients with IgAV and the most severe cutaneous manifestations were statistically significantly more likely to develop nephritis and were treated with systemic glucocorticoids. Disclosures: None.
О ПОВЕДЕНИИ СОЛНЕЧНЫХ И ГЕЛИОСФЕРНЫХ ХАРАКТЕРИСТИК В ФАЗЕ МИНИМУМА МЕЖДУ СОЛНЕЧНЫМИ ЦИКЛАМИ 24 И 25
Creators: name: Крайнев, М.Б.
Publisher: name: Кольский научный центр Российской академии наук
Year: 2019

description: Ранее мы оценили возможные характеристики гелиосферы, важные для распространения ГКЛ, и определяемую ими интенсивность ГКЛ в середине 2019 г. Эта оценка была сделана, исходя из линейноготренда в указанных гелиосферных характеристиках, наблюдаемого в трёх предыдущих минимумах пятнообразовательной активности Солнца. Момент tm=2019.5 тогда оценивался как приблизительное время достижения максимальной интенсивности ГКЛ в минимуме между солнечными циклами 24 и 25. Прошедшие после этих оценок два года продемонстрировали, что наблюдаемое поведение обсуждаемых гелиосферных характеристик существенно отличается от их поведения в предыдущих солнечных циклах. На основании этих данных и сравнения развития 24-го солнечного цикла с предыдущими мы пытаемся дать новые оценкимомента минимума 24/25. Используя прогноз методом точек перегиба, оцениваются значения площади солнечных пятен и интенсивности ГКЛ в это время.
Thermal Boundary Layer Equation for Turbulent Rayleigh-Benard Convection
Creators: name: Shishkina, Olga
name: Horn, Susanne
name: Wagner, Sebastian
name: Ching, Emily S. C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We report a new thermal boundary layer equation for turbulent Rayleigh-Benard convection for Prandtl number Pr>1 that takes into account the effect of turbulent fluctuations. These fluctuations are neglected in existing equations, which are based on steady-state and laminar assumptions. Using this new equation, we derive analytically the mean temperature profiles in two limits: (a) Pr>1, Pr~1 and (b) Pr>>1. These two theoretical predictions are in excellent agreement with the results of our direct numerical simulations for Pr=4.38 (water) and Pr=2547.9 (glycerol) respectively.
description: 4 pages, 3 figures
Evidence for dx2-y2 pairing from nuclear-magnetic-resonance experiments in the superconducting state of YBa2Cu3O7
Creators: name: Pines, D.
name: Lu, J.P.
name: Thelen, D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: We calculate the electron spin susceptibility for the superconducting state of YBa2Cu3O7 using a band structure with nearest- and next-nearest-neighbor hopping, a momentum-dependent spin-spin interaction, and a superconducting gap with dx2-y2 symmetry. Our calculated nuclear magnetic relaxation rates and Knight shift agree favorably with experiment. Our work provides further evidence for a dx2-y2 pairing state and demonstrates that antiferromagnetic correlations persist in the superconducting state.
МОДЕЛИРОВАНИЕ РЕЗУЛЬТАТОВ ЭКСПЕРИМЕНТА РЕГУЛЯРНОГО БАЛЛОННОГО МОНИТОРИНГА КОСМИЧЕСКИХ ЛУЧЕЙ В СЛУЧАЕ ИСПОЛЬЗОВАНИЯ ДАННЫХ PAMELA КАК ВХОДНОГО ПАРАМЕТРА ЭНЕРГЕТИЧЕСКОГО СПЕКТРА ИСТОЧНИКА ПЕРВИЧНЫХ ГКЛ
Creators: name: Маурчев, Е.А.
Publisher: name: Кольский научный центр Российской академии наук
Year: 2019

description: Существует огромная база данных, представляющая собой высотные профили скорости счета, полученные в результате запуска шаров-зондов с установленными на них счетчиками СТС-6. Одно из местоположений, где регулярно проводятся эксперименты с этим оборудованием, находится в г. Апатиты. Поэтому, сравнивая экспериментальные данные с данными моделирования для соответствующих географических координат, можно производить верификацию модели, а также получать более подробную информацию о параметрах вторичных космическихлучей в атмосфере Земли. В представленной работе приводятся результаты моделирования прохождения протонов через атмосферу Земли и их сравнение с усредненной высотной кривой скорости счета для минимума солнечной активности. Особенностью этого исследования является использование спектра, полученного при помощи аппарата PAMELAв качестве входного параметра генератора первичных частиц.
Die Engel, Abbilder des Heiligen Geistes
Creators: name: Heufelder, Emmanuel Maria
Publisher: name: Internationale katholische Zeitschrift Communio
Year: 2022

description: Internationale katholische Zeitschrift Communio, Bd. 2 Nr. 6 (1973): Internationale katholische Zeitschrift Communio, Band 2, Heft 6
Fractional Quantum Hall Effect at Landau Level Filling nu=4/11
Creators: name: Pan, W.
name: Baldwin, K. W.
name: West, K. W.
name: Pfeiffer, L. N.
name: Tsui, D. C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report low temperature electronic transport results on the fractional quantum Hall effect of composite fermions at Landau level filling nu = 4/11 in a very high mobility and low density sample. Measurements were carried out at temperatures down to 15mK, where an activated magnetoresistance Rxx and a quantized Hall resistance Rxy, within 1% of the expected value of h/(4/11)e^2, were observed. The temperature dependence of the Rxx minimum at 4/11 yields an activation energy gap of ~ 7 mK. Developing Hall plateaus were also observed at the neighboring states at nu = 3/8 and 5/13.
Vacuum energy densities of a field in a cavity with a mobile boundary
Creators: name: Armata, Federico
name: Passante, Roberto
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the zero-point field fluctuations, and the related field energy densities, inside a one-dimensional and a three-dimensional cavity with a mobile wall. The mechanical degrees of freedom of the mobile wall are described quantum mechanically and they are fully included in the overall system dynamics. In this optomechanical system, the field and the wall can interact with each other through the radiation pressure on the wall, given by the photons inside the cavity or even by vacuum fluctuations. We consider two cases: the one-dimensional electromagnetic field and the three-dimensional scalar field, and use the Green's functions formalism, which allows extension of the results obtained for the scalar field to the electromagnetic field. We show that the quantum fluctuations of the position of the cavity's mobile wall significantly affect the field energy density inside the cavity, in particular at the very proximity of the mobile wall. The dependence of this effect from the ultraviolet cutoff frequency, related to the plasma frequency of the cavity walls, is discussed. We also compare our new results for the one-dimensional electromagnetic field and the three-dimensional massless scalar field to results recently obtained for the one-dimensional massless scalar field. We show that the presence of a mobile wall also changes the Casimir-Polder force on a polarizable body placed inside the cavity, giving the possibility to detect experimentally the new effects we have considered.
description: 11 pages, 5 figures
Replication files for: The UK summer heatwave of 2018 and public concern over energy security
Creators: name: Larcom, Shaun
name: Po-Wen She
name: Gevelt, Terry Van
Publisher: name: Figshare
Year: 2019
Subjects: subject: 140205 Environment and Resource Economics
subject: FOS: Economics and business

description: Replication data and code for: The UK summer heatwave of 2018 and public concern over energy security
Comparison of spin dynamics in YBa2Cu3O7-δ and La2-xSrxCuO4: Effects of Fermi-surface geometry
Creators: name: Si, Q.
name: Zha, Y.
name: Levin, K.
name: Lu, J.P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: Neutron experiments have indicated that the structure factor S(q,ω) for the two cuprates YBa2Cu3O7-δ and La2-xSrxCuO4 has a different q dependence. Commensurate peaks at (π/a,π/a) are observed in the former case, whereas clearly incommensurate peaks are seen in the latter, for metallic hole concentrations. We attribute this contrasting q dependence to differences in the Fermi-surface geometry, obtained in band-structure approaches, and (for the YBaCuO system) also corroborated by photoemission experiments. Using a large Coulomb-U, Fermi-liquid-based scheme, we present results for the q,ω and temperature dependence of the neutron cross section as well as for the temperature dependence of the NMR relaxation, in both cuprate families at various hole concentrations. When antiferromagnetic quasiparticle interactions of moderate strength are included, these calculations compare favorably with experiment. It should be stressed that the Fermi-surface shape must be accurately represented in both systems in order to produce this good agreement with the neutron data. We conclude that the close correspondence found, thus far, between band-structure-derived spin dynamics and the detailed fermiology of both cuprates provides support for Fermi-liquid-based schemes. Furthermore, this correspondence suggests important constraints which should be included in theoretical schemes ranging from the marginal and nearly antiferromagnetic Fermi liquid to more exotic scenarios for the normal state. Within this context, it is extremely important to determine the characteristic energy scales of the Fermi liquid. Comparison of our calculations with the measured energy scales of the spin dynamics indicates that these are sufficiently low so that one can reconcile deviations from canonical behavior above Tc with a Fermi-liquid ground state. Explicit effects of these low-energy scales are discussed in the context of the quasiparticle lifetime as a function of frequency and temperature. Our detailed studies also yield predictions for future experiments which will help to test futher the validity of this approach.
Direct Models for Simultaneous Translation and Automatic Subtitling: FBK@IWSLT2023
Creators: name: Papi, Sara
name: Gaido, Marco
name: Negri, Matteo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper describes the FBK's participation in the Simultaneous Translation and Automatic Subtitling tracks of the IWSLT 2023 Evaluation Campaign. Our submission focused on the use of direct architectures to perform both tasks: for the simultaneous one, we leveraged the knowledge already acquired by offline-trained models and directly applied a policy to obtain the real-time inference; for the subtitling one, we adapted the direct ST model to produce well-formed subtitles and exploited the same architecture to produce timestamps needed for the subtitle synchronization with audiovisual content. Our English-German SimulST system shows a reduced computational-aware latency compared to the one achieved by the top-ranked systems in the 2021 and 2022 rounds of the task, with gains of up to 3.5 BLEU. Our automatic subtitling system outperforms the only existing solution based on a direct system by 3.7 and 1.7 SubER in English-German and English-Spanish respectively.
description: Published at IWSTL 2023