cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Age differences in the impact of peers on adolescents' and adults' neural response to reward
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: Adolescence
Peer influence
Reward processing
Neuroimaging
Striatum
Development

description: © 2014 The Authors. Published by Elsevier Ltd. Prior research suggests that increased adolescent risk-taking in the presence of peers may be linked to the influence of peers on the valuation and processing of rewards during decision-making. The current study explores this idea by examining how peer observation impacts the processing of rewards when such processing is isolated from other facets of risky decision-making (e.g. risk-perception and preference, inhibitory processing, etc.). In an fMRI paradigm, a sample of adolescents (ages 14-19) and adults (ages 25-35) completed a modified High/Low Card Guessing Task that included rewarded and un-rewarded trials. Social context was manipulated by having participants complete the task both alone and while being observed by two, same-age, same-sex peers. Results indicated an interaction of age and social context on the activation of reward circuitry during the receipt of reward; when observed by peers adolescents exhibited greater ventral striatal activation than adults, but no age-related differences were evinced when the task was completed alone. These findings suggest that, during adolescence, peers influence recruitment of reward-related regions even when they are engaged outside of the context of risk-taking. Implications for engagement in prosocial, as well as risky, behaviors during adolescence are discussed.
A revised comparison of distant and nearby solar twins
Creators: name: Cowley, Charles R.
name: Stencel, Robert E.
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: Properties of solar twins reported by Lehmann et al. (2023) at kiloparsec distances from the local standard of rest (LSR) are compared to solar twins within 100 pc of the Sun. These have velocity distributions closely similar to those of the nearby twins in addition to closely matching $T_{\rm eff}$, $\log{(g)}$ and $[Fe/H]$. The new twins are at slightly higher galactic latitudes, and are somewhat closer to the Galactic center. Additionally, they may be significantly older than nearby solar twins.
description: Revised and updated version of 2023 RNAAS 7, 88
Accounting for Experimental Noise Reveals That mRNA Levels, Amplified by Post-Transcriptional Processes, Largely Determine Steady-State Protein Levels in Yeast
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: Gene Expression Regulation, Fungal
Models, Genetic
RNA Processing, Post-Transcriptional
RNA, Messenger
Reproducibility of Results
Saccharomyces cerevisiae
Saccharomyces cerevisiae Proteins
Transcription, Genetic

description: © 2015 Csárdi et al. Cells respond to their environment by modulating protein levels through mRNA transcription and post-transcriptional control. Modest observed correlations between global steady-state mRNA and protein measurements have been interpreted as evidence that mRNA levels determine roughly 40% of the variation in protein levels, indicating dominant post-transcriptional effects. However, the techniques underlying these conclusions, such as correlation and regression, yield biased results when data are noisy, missing systematically, and collinear---properties of mRNA and protein measurements---which motivated us to revisit this subject. Noise-robust analyses of 24 studies of budding yeast reveal that mRNA levels explain more than 85% of the variation in steady-state protein levels. Protein levels are not proportional to mRNA levels, but rise much more rapidly. Regulation of translation suffices to explain this nonlinear effect, revealing post-transcriptional amplification of, rather than competition with, transcriptional signals. These results substantially revise widely credited models of protein-level regulation, and introduce multiple noise-aware approaches essential for proper analysis of many biological phenomena.
Accelerometer-measured sedentary time among Hispanic adults: Results from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL)
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: Cardiovascular health
Health disparities
Latino
Sedentariness

description: © 2015 The Authors. Excessive sedentary behavior is associated with negative health outcomes independent of physical activity. Objective estimates of time spent in sedentary behaviors are lacking among adults from diverse Hispanic/Latino backgrounds. The objective of this study was to describe accelerometer-assessed sedentary time in a large, representative sample of Hispanic/Latino adults living in the United States, and compare sedentary estimates by Hispanic/Latino background, sociodemographic characteristics and weight categories. This study utilized baseline data from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL) that included adults aged 18-74. years from four metropolitan areas (N. =. 16,415). Measured with the Actical accelerometer over 6. days, 76.9% (n. =. 12,631) of participants had >10. h/day and >3. days of data. Participants spent 11.9. h/day (SD 3.0), or 74% of their monitored time in sedentary behaviors. Adjusting for differences in wear time, adults of Mexican background were the least (11.6. h/day), whereas adults of Dominican background were the most (12.3. h/day), sedentary. Women were more sedentary than men, and older adults were more sedentary than younger adults. Household income was positively associated, whereas employment was negatively associated, with sedentary time. There were no differences in sedentary time by weight categories, marital status, or proxies of acculturation. To reduce sedentariness among these populations, future research should examine how the accumulation of various sedentary behaviors differs by background and region, and which sedentary behaviors are amenable to intervention.
A Novel Approach to High-Quality Postmortem Tissue Procurement: The GTEx Project
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: Biomedical Research
Humans
Tissue Banks
Tissue and Organ Procurement

description: © Copyright 2015, Mary Ann Liebert, Inc. 2015. The Genotype-Tissue Expression (GTEx) project, sponsored by the NIH Common Fund, was established to study the correlation between human genetic variation and tissue-specific gene expression in non-diseased individuals. A significant challenge was the collection of high-quality biospecimens for extensive genomic analyses. Here we describe how a successful infrastructure for biospecimen procurement was developed and implemented by multiple research partners to support the prospective collection, annotation, and distribution of blood, tissues, and cell lines for the GTEx project. Other research projects can follow this model and form beneficial partnerships with rapid autopsy and organ procurement organizations to collect high quality biospecimens and associated clinical data for genomic studies. Biospecimens, clinical and genomic data, and Standard Operating Procedures guiding biospecimen collection for the GTEx project are available to the research community.
Reconceptualising professional development in early childhood education. A study on teachers' professionalism carried out in Bologna province.
Creators: name: Lazzari, Arianna <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: M-PED/03 Didattica e pedagogia speciale

description: The research undertaken for this doctoral thesis explores the issue of teachers professionalism within pre-school institutions. The issue of early childhood professionalism has become increasingly important in the academic debate over the last decade as it is documented by a growing body of research published on the topic both nationally (Contini & Manini, 2007; Bondioli & Ferrari, 2004) and internationally (Peeters, 2008; Urban & Dalli, 2008; Urban, 2010). The study presented in this thesis aims at investigating teachers’ conceptualisations of professionalism by focusing on their understandings of educational work.  The idea standing at the core of this research is that exploring the concept of professionalism from a ground-up perspective could lead to important reflections for a re-conceptualisation of professional development as a space for change directed from within institutions. The study is framed within a broadly sociological concern that inform the data analysis by contextualising the issue of early childhood professionalism in the contemporary socio-political arena. The research involves sixty teachers operating in state, municipal and private pre-school institutions located in Bologna province that took part to focus groups and interviews. The empirical materials, consisting of oral and written statements, are interpreted through phenomenographical analysis that gives account of how features of professionalism vary across the different institutional settings in which they are played out. This thesis, written in English and informed by an European research background, offers a contribution to the furthering of systemic approaches to the investigation of early childhood education professionalism in the context of the national and international academic debate.
Flipping in the pore: Discovery of dual inhibitors that bind in different orientations to the wild-type versus the amantadine-resistant s31n mutant of the influenza a virus m2 proton channel
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: Amantadine
Animals
Dogs
Drug Discovery
Drug Resistance, Viral
Influenza A virus
Madin Darby Canine Kidney Cells
Molecular Dynamics Simulation
Mutation
Porosity
Protein Binding
Protein Conformation
Proton Pump Inhibitors
Proton Pumps
Structure-Activity Relationship
Thiophenes

description: © 2014 American Chemical Society. Influenza virus infections lead to numerous deaths and millions of hospitalizations each year. One challenge facing anti-influenza drug development is the heterogeneity of the circulating influenza viruses, which comprise several strains with variable susceptibility to antiviral drugs. For example, the wild-type (WT) influenza A viruses, such as the seasonal H1N1, tend to be sensitive to antiviral drugs, amantadine and rimantadine, while the S31N mutant viruses, such as the pandemic 2009 H1N1 (H1N1pdm09) and seasonal H3N2, are resistant to this class of drugs. Thus, drugs targeting both WT and the S31N mutant are highly desired. We report our design of a novel class of dual inhibitors along with their ion channel blockage and antiviral activities. The potency of the most active compound 11 in inhibiting WT and the S31N mutant influenza viruses is comparable with that of amantadine in inhibiting WT influenza virus. Solution NMR studies and molecular dynamics (MD) simulations of drug-M2 interactions supported our design hypothesis: namely, the dual inhibitor binds in the WT M2 channel with an aromatic group facing down toward the C-terminus, while the same drug binds in the S31N M2 channel with its aromatic group facing up toward the N-terminus. The flip-flop mode of drug binding correlates with the structure-activity relationship (SAR) and has paved the way for the next round of rational design of broad-spectrum antiviral drugs.
On the Efficacy and Mediation of a One-on-One HIV Risk-Reduction Intervention for African American Men Who Have Sex with Men: A Randomized Controlled Trial
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: HIV
Men who have sex with men
African Americans
Intervention
Sexual behavior

description: © 2014, The Author(s). We examined the efficacy and mediation of Being Responsible for Ourselves (BRO), an HIV/STI risk-reduction intervention for African American men who have sex with men (MSM), the population with the highest HIV-diagnosis rate in the US. We randomized African American MSM to one of two interventions: BRO HIV/STI risk-reduction, targeting condom use; or attention-matched control, targeting physical activity and healthy diet. The interventions were based on social cognitive theory, the reasoned-action approach, and qualitative research. Men reporting anal intercourse with other men in the past 90 days were eligible and completed pre-intervention, immediately post-intervention, and 6 and 12 months post-intervention surveys. Of 595 participants, 503 (85 %) completed the 12-month follow-up. Generalized-estimating-equations analysis indicated that, compared with the attention-matched control intervention, the BRO intervention did not increase consistent condom use averaged over the 6- and 12-month follow-ups, which was the primary outcome. Although BRO did not affect the proportion of condom-protected intercourse acts, unprotected sexual intercourse, multiple partners, or insertive anal intercourse, it did reduce receptive anal intercourse compared with the control, a behavior linked to incident HIV infection. Mediation analysis using the product-of-coefficients approach revealed that although BRO increased seven of nine theoretical constructs it was designed to affect, it increased only one of three theoretical constructs that predicted consistent condom use: condom-use impulse-control self-efficacy. Thus, BRO indirectly increased consistent condom use through condom-use impulse-control self-efficacy. In conclusion, although BRO increased several theoretical constructs, most of those constructs did not predict consistent condom use; hence, the intervention did not increase it. Theoretical constructs that interventions should target to increase African American MSM’s condom use are discussed.
title: Schnittstellendefinition für die parallele Lokalisierung eines Fahrzeuges in einer Simulation mit Open Simulation Interface
Creators: name: Waldmann, Markus
Publisher: name: Hochschule für angewandte Wissenschaften Kempten
Year: 2025
Subjects: subject: 60 Technik

description: Simulation is an important tool for safety in the development process for an autonomous vehicle. This work addresses vehicle localization in the real environment through a simulation. The simulation is a digital twin of the real environment. Sensor data from the real environment are transferred to the simulator using the open simulation interface standard. Thus, finding a common denominator and defining an interface, such as the open simulation interface standard, are critical to unifying the data exchange between a simulation and sensors and vice versa.
This paper presents the current advantages and disadvantages. Sensors are attached to a real vehicle, and their data are input into the simulator, where a localization algorithm calculates the vehicle position in the digital twin. Finally, virtual sensors are generated in the simulation, providing virtually generated sensor data in the open simulation interface format.
description: Die vorgelegte Arbeit befasst sich mit der Lokalisierung eines Fahrzeuges aus der realen Umgebung in der Simulation. Die Simulation verfügt über einen digitalen Zwilling der realen Umgebung. Mit Hilfe des Open-Simulation-Interface-Standards werden die Daten der Sensoren aus der realen Umgebung an den Simulator übergeben. Ein wichtiges Mittel für die Sicherheit im Entwicklungsprozess eines autonomen Fahrzeugs ist die Simulation. Hierfür ist es wichtig, einen gemeinsamen Nenner zu finden und eine Schnittstelle zu definieren. Dazu gehört z.B. der Open- Simulation-Interface-Standard, um den Datenaustausch zwischen Simulation und Sensorik zu vereinheitlichen.
In dieser Arbeit wird der Entwicklungsprozess des Versuchsträgers aufgezeigt. Es wird Sensorik an einem realen Fahrzeug angebracht. Des Weiteren werden Sensordaten in den Simulator eingespeist und mit Hilfe eines Lokalisierungsalgorithmus die Position des Fahrzeugs im Simulator berechnet. Abschließend werden Sensoren in der Simulation erzeugt, die virtuell erzeugte Sensordaten im Open-Simulation-Interface Format liefern können.
Magnetic properties of the spin-1/2 XXZ model on the Shastry-Sutherland lattice: Effect of long-range interactions
Creators: name: Suzuki, Takahumi
name: Tomita, Yusuke
name: Kawashima, Naoki
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study magnetic properties of the $S=1/2$ Ising-like XXZ model on the Shastry-Sutherland lattices with long-range interactions, using the quantum Monte Carlo method. This model shows magnetization plateau phases at one-half and one-third of the saturation magnetization when additional couplings are considered. We investigate the finite temperature transition to one-half and one-third plateau phases. The obtained results suggest that the former case is of the first order and the latter case is of the second order. We also find that the system undergoes two successive transitions with the 2D Ising model universality, although there is a single phase transition in the Ising limit case. Finally, we estimate the coupling ratio to explain the magnetization process observed in ${\rm TmB_4}$
description: 5 pages, 6 figures
Cometary Activity Beyond The Planets
Creators: name: Bouziani, Naceur
name: Jewitt, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Recent observations show activity in long-period comet C/2017 K2 at heliocentric distances beyond the orbit of Uranus. With this as motivation, we constructed a simple model that takes a detailed account of gas transport modes and simulates the time-dependent sublimation of super-volatile ice from beneath a porous mantle on an incoming cometary nucleus. The model reveals a localized increase in carbon monoxide (CO) sublimation close to heliocentric distance rH = 150 AU (local blackbody temperature around 23 K), followed by a plateau and then a slow increase in activity towards smaller distances. This localized increase occurs as heat transport in the nucleus transitions between two regimes characterized by the rising temperature of the CO front at larger distances and nearly isothermal CO at smaller distances. As this transition is a general property of sublimation through a porous mantle, we predict that future observations of sufficient sensitivity will show that inbound comets (and interstellar interlopers) will exhibit activity at distances far beyond the planetary region of the solar system.
description: Accepted for publication in ApJ, 12 pages, 15 figures, 1 table
Inhibition of miR-21 restores RANKL/OPG ratio in multiple myeloma-derived bone marrow stromal cells and impairs the resorbing activity of mature osteoclasts
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: miR-21
miRNAs
multiple myeloma bone disease
OPG
RANKL

description: miR-21 is an oncogenic microRNA (miRNA) with an emerging role as therapeutic target in human malignancies, including multiple myeloma (MM). Here we investigated whether miR-21 is involved in MM-related bone disease (BD). We found that miR-21 expression is dramatically enhanced, while osteoprotegerin (OPG) is strongly reduced, in bone marrow stromal cells (BMSCs) adherent to MM cells. On this basis, we validated the 3'UTR of OPG mRNA as miR-21 target. Constitutive miR-21 inhibition in lentiviral-transduced BMSCs adherent to MM cells restored OPG expression and secretion. Interestingly, miR-21 inhibition reduced RANKL production by BMSCs. Overexpression of protein inhibitor of activated STAT3 (PIAS3), which is a direct and validated target of miR-2, antagonized STAT3-mediated RANKL gene activation. Finally, we demonstrate that constitutive expression of miR-21 inhibitors in BMSCs restores RANKL/OPG balance and dramatically impairs the resorbing activity of mature osteoclasts. Taken together, our data provide proof-of-concept that miR-21 overexpression within MM-microenviroment plays a crucial role in bone resorption/ apposition balance, supporting the design of innovative miR-21 inhibition-based strategies for MM-related BD.
La cessazione dell'attività economica nell'IVA: profili nazionali e comunitari
Creators: name: Addarii, Eleonora <1980>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: IUS/12 Diritto tributario

description: La ricerca oggetto della tesi dottorale verte sulla ricostruzione della disciplina della
cessazione e delle fasi liquidatore dell’attività nell’ambito dell’imposta sul valore
aggiunto, nel tentativo di individuare criteri certi ed omogenei per la sua individuazione,
sia in prospettiva comunitaria che in prospettiva nazionale.
In primo luogo, l’indagine si concentra sulla ricostruzione della nozione di attività
economica e sui profili dinamici dell’attività in ambito comunitario, nell’intento di
chiarire, sulla base della giurisprudenza, i criteri utilizzati per individuare la cessazione
dell’attività rilevante ai fini dell’imposta, sfruttando in tal senso l’esperienza degli atti
preparatori e l’applicabilità dell’ipotesi di applicazione dell’imposta per autoconsumo
Vengono così valorizzati, accanto al profilo oggettivo costituito dalla presenza di una
legame tra le operazioni della fase liquidatoria, il ruolo del soggetto passivo, quale
portatore di una volontà che è in grado di influire sull’esistenza dell’attività stessa, e,
conseguentemente, delle dichiarazioni formali imposte dalla Direttiva, quale
manifestazione diretta di tale volontà ed elemento in grado di costituire un indice certo
di cessazione.
In seguito si esamina il regime impositivo nazionale ed in particolare le linee
interpretative maggioritarie accolte da dottrina e giurisprudenza. Ricostruiti nozione e
ruolo di attività economica, con riferimento all’esercizio d’impresa, vengono analizzati i
diversi casi di cessazione contemplati dall’ordinamento –liquidazione volontaria,
trasferimento dell’azienda e fallimento- analizzati sia nella prospettiva del diritto
tributario che in quella del diritto commerciale.
L’esame così sviluppato è volto a contestare l’interpretazione maggioritaria che vede
nella sola presenza di beni residui alla liquidazione, o comunque la permanenza di un
insieme di beni potenzialmente in grado di far riprendere l’esercizio, elemento
sufficiente a mantenere in vita l’impresa e con essa la soggettività passiva all’imposta.
Infine, vengono confrontati i risultati raggiunti nell’esame della disciplina comunitaria
nazionale, ponendone in evidenza le possibilità incompatibilità ed i punti di contatto,
con l’intenzione di dimostrare l’applicabilità anche a livello nazionale dei principi
emersi in ambito comunitario.
Equilibrium Charge Density on a Thin Curved Wire
Creators: name: Partovi, M. H.
name: Griffiths, J. D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: This work addresses the electrostatic problem of a thin, curved, cylindrical conductor, or a conducting filament, and shows that the corresponding linear charge density slowly tends to uniformity as the inverse of the logarithm of a characteristic parameter. An alternative derivation of this result directly based on energy minimization is developed. These results are based on a general asymptotic analysis of the electric field components and potential near a charge filament in the limit of vanishing diameter. It is found that the divergent parts of the radial and azimuthal electric field components, as well as the electric potential, are determined by the local charge density while the axial component is determined by the local dipole density. For a straight filament, these results reduce to those for conducting needles discussed in the literature. For curved filaments, there is an additional length scale in the problem arising from the finite radius of curvature of the filament. Remarkably, the basic uniformity result survives the added complications, which include an azimuthal variation in the surface charge density of the filament. These uniformity results yield an asymptotic formula for the capacitance of a curved filament that generalizes Maxwell's original result. The examples of a straight filament with uniform and linearly varying charge densities, as well as a circular filament with a uniform charge distribution, are treated analytically and found to be in agreement with the results of the general analysis. Numerical calculations illustrating the slow convergence of linear charge distribution to uniformity for an elliptical filament are presented, and an interactive computer program implementing and animating the numerical calculations is provided.
description: 11 pages, 4 figures, 1 computer program
Noble-Metal-Assisted Fast Interfacial Oxygen Migration with Topotactic Phase Transition in Perovskite Oxides
Creators: name: Wang, Qian
name: Gu, Youdi
name: Zhu, Wenxuan
name: Han, Lei
name: Pan, Feng
name: Song, Cheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Transition-metal perovskite oxides constitute a series of functional material systems for electronics, catalysis and energy-conversion processes, in which oxygen migration and evolution play a key role. However, the stable metal-oxygen (M-O) bond forms large energy barrier inhibiting ion diffusion. Therefore, seeking efficient and facile approaches to accelerate oxygen kinetics has become a significant issue. Here, the interaction (interfacial charge transfer and cooperative bonding) between noble metal (Pt, Ag) and perovskites oxide (SrCoO3-delta) is employed to weaken (M-O) bond and decrease the energy barrier of oxygen migration. Noble metal layers serving as oxygen pumps can continuously extract oxygen from oxide films to atmosphere. The temperature of topotactic phase transition from perovskite (SrCoO3) to brownmillerite (SrCoO2.5) is remarkably lowered from 200 K to room temperature. Furthermore, this approach can also be applied to SrFeO3 for similar topotactic phase reduction by moderate thermal activation. Our finding paves a promising and general pathway to achieve fast oxygen migration in perovskite oxides, with important application prospect in low-temperature electrodes and high-activity catalysis interface.
description: 30 pages, 5 figures
Dairy Wastage Footprint Analysis: A Farm-to-Fork Life Cycle Approach Across Dairy Supply Chain.
Creators: name: Alobadi, Muna
Publisher: name: figshare
Year: 2021
Subjects: subject: 70108 Sustainable Agricultural Development
subject: FOS: Other agricultural sciences

description: Decarbonizing practices in the food industry act as an obstacle in achieving sustainability despite climate change concerns. Roughly one-third of all food produced globally is wasted across the value chain generating 1.6 billion tons of food waste. Regardless of efforts to decrease carbon emissions from the agri-food system, the agricultural sector generates approximately 4.4 gigatonnes of greenhouse gas emissions annually from natural sources for producing food that is ultimately lost along the food supply chain. Although the dairy sector is a primary source of milk, cheese, yogurt, and cream, livestock's supply chain, including their wastes, releases a considerable greenhouse gas such as methane, nitrous oxide, and carbon dioxide. The presented paper has proven that food waste in mass does not necessarily indicate the corresponding food waste-related emissions. Animal-containing products have comparatively low waste in terms of mass. However, the polluting emissions released from the dairy sector are relatively high regarding global warming potential (Kg C02 eq) and carbon footprint. The study results showed that milk dominates the majority of carbon intensity accounted for 50%, followed by cheese 24%, yogurt 20%, and cream 7%. The consumption stage responsible for 50% of dairy food waste in terms of mass. In contrast, the primary production stage accounts for the majority of the dairy sector's carbon intensity. The paper provides recommendations on research direction for mitigating food waste and supports the transitions towards a sustainable food system.
title: Hemorragia intraabdominal de etiología tumoral. Forma de presentación excepcional en urgencias.
Creators: name: Pérez Sánchez, Pablo
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Abdomen
subject: CT
subject: Ultrasound-Colour Doppler

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Describir los hallazgos radiológicosen varios casos dehemorragia abdominalsecundaria a patología tumoral abdominal mediante ecografía y TC,y establecer diagnósticos diferenciales adecuados,
con la finalidad derealizar un manejo...
Polarization Diffusion from Spacetime Uncertainty
Creators: name: Contaldi, Carlo
name: Dowker, Fay
name: Philpott, Lydia
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A model of Lorentz invariant random fluctuations in photon polarization is presented. The effects are frequency dependent and affect the polarization of photons as they propagate through space. We test for this effect by confronting the model with the latest measurements of polarization of Cosmic Microwave Background (CMB) photons.
description: 4 pages, 1 figure
title: Tomografía Computarizada en la planificación de la cirugía endoscópica nasosinusal
Creators: name: Oleaga, Laura
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Head and neck
subject: CT
subject: Diagnostic procedure
subject: Pathology

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Revisar los datos anatómicos relevantes a valorar en los estudios de Tomografía Computarizada (TC) en pacientes que van a ser sometidos a cirugía endoscópica nasosinusal. Analizar las variantes anatómicas para evitar complicaciones...
title: Estudio de la vascularización en las afasias mediante múltiples técnicas de imagen
Creators: name: Carreño Morán, Patricia
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Neuroradiology brain
subject: Vascular
subject: CT-Angiography
subject: MR-Angiography
subject: Catheter arteriography
subject: Decision analysis
subject: Speech disorders
subject: Arteriovenous malformations

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
La causa más frecuente de las afasias son los ACV isquémicos,
hasta el 26% asocian afasia.
El tratamiento de tumores o MAV requieren un adecuado conocimiento de la vascularización de las áreas del lenguaje que presenta variaciones intra e...
title: Imagen molecular del carcinona de próstata:  PET/TAC con 18 F-colina
Creators: name: Recio Rodríguez, Manuel
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Pelvis
subject: Genital / Reproductive system male
subject: PET-CT

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
El carcinoma de próstata sigue siendo uno de los principales problemas mundiales de salud pública.
El carcinoma de próstata tiene un comportamiento clínico muy variable,
desde un curso indolente a muy agresivo.
El objetivo del tratamiento del...
Additional file 3 of Novel immune-related genes in the tumor microenvironment with prognostic value in breast cancer
Creators: name: Tan, Wen
name: Liu, Maomao
name: Wang, Liangshan
name: Guo, Yang
name: Wei, Changsheng
name: Zhang, Shuqi
name: Luo, Chengyu
name: Liu, Nan
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology

description: Additional file 3 Table S1. The overlapping genes between the upregulated DEGs from the high vs low immune score groups and the gene datasets.
Local two- and three-nucleon chiral interactions
Creators: name: Piarulli, Maria
name: Schiavilla, Rocco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Understanding the structure and reactions of nuclei from first principles has been a long-standing goal of nuclear physics. In this respect, few- and many-body systems provide a unique laboratory for studying nuclear interactions. In the past couple of decades, the modeling of nuclear interactions has progressed significantly owing, in particular, to the development of chiral effective field theory ($χ$EFT), a low-energy effective representation of quantum chromodynamics (QCD). Within $χ$EFT, many studies have dealt with the construction of both two- and three-nucleon interactions. The aim of the present article is to provide a concise account of chiral interaction models that are local in configuration space, and to report on a selection of recent results for nuclear systems obtained with these interactions.
description: 14 pages, 2 figures, Contribution to Special Issue of Few-Body Systems: Celebrating 30 years of Steven Weinberg's papers on Nuclear Forces from Chiral Lagrangians
Epitaxial Graphene Growth on SiC Wafers
Creators: name: Gaskill, D. Kurt
name: Jernigan, Glenn G.
name: Campbell, Paul M.
name: Tedesco, Joseph L.
name: Culbertson, James C.
name: VanMil, Brenda L.
name: Myers-Ward, Rachael L.
name: Eddy,, Charles R.
name: Moon, Jeong
name: Curtis, D.
name: Hu, M.
name: Wong, D.
name: McGuire, C.
name: Robinson, Joshua A.
name: Fanton, Mark A.
name: Stitt, Joseph P.
name: Stitt, Thomas
name: Snyder, David
name: Weng, Xiaojun
name: Frantz, Eric
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: An in vacuo thermal desorption process has been accomplished to form epitaxial graphene (EG) on 4H- and 6H-SiC substrates using a commercial chemical vapor deposition reactor. Correlation of growth conditions and the morphology and electrical properties of EG are described. Raman spectra of EG on Si-face samples were dominated by monolayer thickness. This approach was used to grow EG on 50 mm SiC wafers that were subsequently fabricated into field effect transistors with fmax of 14 GHz.
description: 215th Meeting of the Electrochemical Society, 8 pages, 8 figures
Early Fermi Gamma-ray Space Telescope Observations of the Quasar 3C 454.3
Creators: name: LAT Collaboration
name: Abdo, A. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: This is the first report of Fermi Gamma-ray Space Telescope observations of the quasar 3C 454.3, which has been undergoing pronounced long-term outbursts since 2000. The data from the Large Area Telescope (LAT), covering 2008 July 7 - October 6, indicate strong, highly variable gamma-ray emission with an average flux of ~3 x 10^{-6} photons cm^{-2} s^{-1}, for energies above 100 MeV. The gamma-ray flux is variable, with strong, distinct, symmetrically-shaped flares for which the flux increases by a factor of several on a time scale of about three days. This variability indicates a compact emission region, and the requirement that the source is optically thin to pair-production implies relativistic beaming with Doppler factor delta > 8, consistent with the values inferred from VLBI observations of superluminal expansion (delta ~ 25). The observed gamma-ray spectrum is not consistent with a simple power-law, but instead steepens strongly above ~2 GeV, and is well described by a broken power-law with photon indices of ~2.3 and ~3.5 below and above the break, respectively. This is the first direct observation of a break in the spectrum of a high luminosity blazar above 100 MeV, and it is likely direct evidence for an intrinsic break in the energy distribution of the radiating particles. Alternatively, the spectral softening above 2 GeV could be due to gamma-ray absorption via photon-photon pair production on the soft X-ray photon field of the host AGN, but such an interpretation would require the dissipation region to be located very close (less than 100 gravitational radii) to the black hole, which would be inconsistent with the X-ray spectrum of the source.
description: Accepted by the Astrophysical Journal; corresponding authors: Greg Madejski (madejski@slac.stanford.edu) and Benoit Lott (lott@cenbg.in2p3.fr)
R.A.Fisher, design theory, and the Indian connection
Creators: name: Rau, A. R. P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Statistics Theory (math.ST)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: Design Theory, a branch of mathematics, was born out of the experimental statistics research of the population geneticist R. A. Fisher and of Indian mathematical statisticians in the 1930s. The field combines elements of combinatorics, finite projective geometries, Latin squares, and a variety of further mathematical structures, brought together in surprising ways. This essay will present these structures and ideas as well as how the field came together, in itself an interesting story.
description: 11 pages, 3 figures
Excitons and high-order optical transitions in individual carbon nanotubes
Creators: name: Berciaud, Stephane
name: Voisin, Christophe
name: Yan, Hugen
name: Chandra, Bhupesh
name: Caldwell, Robert
name: Shan, Yuyao
name: Brus, Louis E.
name: Hone, James
name: Heinz, Tony F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We examine the excitonic nature of high-lying optical transitions in single-walled carbon nanotubes by means of Rayleigh scattering spectroscopy. A careful analysis of the principal transitions of individual semiconducting and metallic nanotubes reveals that in both cases the lineshape is consistent with an excitonic model, but not one of free-carriers. For semiconducting species, side-bands are observed at ~200 meV above the third and fourth optical transitions. These features are ascribed to exciton-phonon bound states. Such side-bands are not apparent for metallic nanotubes,as expected from the reduced strength of excitonic interactions in these systems.
The Yoneda algebra of a K_2 algebra need not be another K_2 algebra
Creators: name: Cassidy, Thomas
name: Phan, Christopher
name: Shelton, Brad
Publisher: name: arXiv
Year: 2008
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16E65

description: The Yoneda algebra of a Koszul algebra or a D-Koszul algebra is Koszul. K_2 algebras are a natural generalization of Koszul algebras, and one would hope that the Yoneda algebra of a K_2 algebra would be another K_2 algebra. We show that this is not necessarily the case by constructing a monomial K_2 algebra for which the corresponding Yoneda algebra is not K_2.
description: Errors in v1 corrected
Feedback from $γ$~Cassiopeiae: Large Expanding Cavity, Accelerating Cometary Globules, and Peculiar X-ray Emission
Creators: name: Chen, Xuepeng
name: Guo, Weihua
name: Sun, Li
name: Feng, Jiancheng
name: Su, Yang
name: Sun, Yan
name: Zhang, Shaobo
name: Zhou, Xin
name: Yan, Qing-Zeng
name: Fang, Min
name: Yang, Ji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present wide-field multi-wavelength observations of $γ$ Cassiopeiae (or $γ$~Cas for short) in order to study its feedback toward the interstellar environment. A large expanding cavity is discovered toward $γ$~Cas in the neutral hydrogen (HI) images at a systemic velocity of about -10 km/s. The measured dimension of the cavity is roughly 2.0 deg $\times$ 1.4 deg (or 6.0 pc $\times$ 4.2 pc at a distance of 168 pc), while the expansion velocity is about 5.0$\pm$0.5 km/s. The CO observations reveal systematic velocity gradients in IC63 (about 20 km/s/pc) and IC59 (about 30 km/s/pc), two cometary globules illuminated by $γ$~Cas, proving fast acceleration of the globules under stellar radiation pressure. The gas kinematics indicate that the cavity is opened by strong stellar wind, which has high potential to lead to the peculiar X-ray emission observed in $γ$~Cas. Our result favors a recent new scenario that emphasizes the roles of stellar wind and binarity in the X-ray emission of the $γ$~Cas stars.
description: 21 pages, 7 figures, to be published by the ApJ
Nonlinear dynamics of electromagnetic field and valley polarization in WSe$_{2}$ monolayer
Creators: name: Hashmi, Arqum
name: Yamada, Shunsuke
name: Yamada, Atsushi
name: Yabana, Kazuhiro
name: Otobe, Tomohito
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Linear and nonlinear optical response of WSe$_{2}$ monolayer is investigated by two-dimensional Maxwell plus time-dependent density functional theory with spin-orbit interaction. By applying the chiral resonant pulses, the electron dynamics along with high harmonic generation are examined at weak and strong laser fields. WSe$_{2}$ monolayer shows the linear optical response at the intensity I = 10$^{10}$~W/cm$^{2}$ while a complex nonlinear behavior is observed at I = 10$^{12}$~W/cm$^{2}$. The nonlinear response of WSe$_{2}$ monolayer in terms of saturable absorption is observed at strong laser field. By changing the chirality of the resonant light, a strong circular dichroic effect is observed in the excited state population. A relatively weak laser field shows effective valley polarization while strong field induces spin-polarized carrier peak between $K$($K'$) and $\mathitΓ$-point via nonlinear process. On the other hand, the strong laser field shows high harmonics up to the 11th order. Our results demonstrate that circularly polarized resonant pulse generate high harmonics in WSe$_{2}$ monolayer of order 3n$\pm1$.
description: arXiv admin note: text overlap with arXiv:2110.06433
Did the Event Horizon Telescope Detect the Base of the Sub-Milliarsecond Tubular Jet in M\,87?
Creators: name: Punsly, Brian
name: Chen, Sina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A high sensitivity, 7mm Very Long Baseline Array image of M\,87 was previously analyzed in order to estimate the bulk flow jet velocity between 0.4 and 0.65 mas from the point of origin using the asymmetry between the well-characterized double-ridged counter-jet (unique to this image) and the double ridged jet. We use this same image to estimate the cross-sectional area of this tubular stream. The velocity, acceleration, cross-sectional area and flux density along this stream determines a unique, perfect magnetohydrodynamic jet solution that satisfies, conservation of energy, angular momentum and mass (a monotonic conversion of Poynting flux to kinetic energy flux along the jet). The solution is protonic and magnetically dominated. The bilateral jet transports $\approx 1.2\times10^{-4} M_{\odot}/\rm{yr}$ and $\approx 1.1\times10^{42}$ erg/sec, placing strong constraints on the central engine. A Keplerian disk source that also produces the Event Horizon Telescope (EHT) annulus of emission can supply the energy and mass if the vertical magnetic field at the equator is $\sim 1-3.5$ G (depending on location). A Parker spiral magnetic field, characteristic of a wind or jet, is consistent with the observed EHT polarization pattern. Even though there is no image of the jet connecting with the annulus, it is argued that these circumstances are not coincidental and the polarized portion of the EHT emission is mainly jet emission in the top layers of the disk that is diluted by emission from an underlying turbulent disk. This is a contributing factor to the relatively low polarization levels that were detected.
description: To appear in ApJ Letters
HYBRID VERSION OF LINGUISTICS WITH OTHER DISCIPLINES. CORRELATION BETWEEN LINGUISTICS AND LINGUCULTUROLOGY
Creators: name: Abdiyeva, Xumora
name: Raximova, Nodira
Publisher: name: Zenodo
Year: 2023

description: According to this article, the pecularities of liguistics and linguculturology will be discussed and the study of how language and human society reflect culture adds to our understanding of other cultures and mentalities, as well as the development of intercultural communication, besides this, the concept of Linguculturology, a new branch of linguistics that summarizes the work of some scholars, is discussed. It teaches the reader about the interconnection language and culture, their vital role in society. The purpose of this article is to persuade the reader that the scientific and educational discipline of Linguculturology, as it is known in the domestic academic tradition, can develop more successfully in the context of not only  linguistic but also cultural knowledge itself, by focusing on relevant theoretical and methodological guidelines and employing concepts, terms and research techniques developed on the cultural sciences. The notion of Linguculturology , its origin, evolution and major research methodologies will be mentioned.
Orbital Stark effect and quantum confinement transition of donors in silicon
Creators: name: Rahman, Rajib
name: Lansbergen, G. P.
name: Park, Seung H.
name: Verduijn, J.
name: Klimeck, Gerhard
name: Rogge, S.
name: Hollenberg, Lloyd C. L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Adiabatic shuttling of single impurity bound electrons to gate induced surface states in semiconductors has attracted much attention in recent times, mostly in the context of solid-state quantum computer architecture. A recent transport spectroscopy experiment for the first time was able to probe the Stark shifted spectrum of a single donor in silicon buried close to a gate. Here we present the full theoretical model involving large-scale quantum mechanical simulations that was used to compute the Stark shifted donor states in order to interpret the experimental data. Use of atomistic tight-binding technique on a domain of over a million atoms helped not only to incorporate the full band structure of the host, but also to treat realistic device geometries and donor models, and to use a large enough basis set to capture any number of donor states. The method yields a quantitative description of the symmetry transition that the donor electron undergoes from a 3D Coulomb confined state to a 2D surface state as the electric field is ramped up adiabatically. In the intermediate field regime, the electron resides in a superposition between the states of the atomic donor potential and that of the quantum dot like states at the surface. In addition to determining the effect of field and donor depth on the electronic structure, the model also provides a basis to distinguish between a phosphorus and an arsenic donor based on their Stark signature. The method also captures valley-orbit splitting in both the donor well and the interface well, a quantity critical to silicon qubits. The work concludes with a detailed analysis of the effects of screening on the donor spectrum.
description: 10 pages, 10 figures, journal