cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The association of breastfeeding duration with later maternal feeding styles in infancy and toddlerhood: A cross-sectional analysis
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: Breastfeeding
Satiety response
Feeding behaviors
Feeding responsiveness

description: Background: Breastfeeding modestly reduces obesity risk, yet the mechanisms are not well understood. The goal of the current research was to evaluate the association of breastfeeding duration with a wide range of maternal feeding approaches in late infancy and toddlerhood.Methods: A secondary analysis of cross-sectional data from an ethnically-diverse sample of 154 mothers of infants (aged 7-11 months) and toddlers (aged 12-24 months) was performed. Breastfeeding history was self-reported where 75% of mothers had weaned by the time of the interview. Multiple dimensions of maternal feeding approaches were measured using the Infant Feeding Styles Questionnaire which assesses pressuring, restriction, responsive, laissez-faire, and indulgent approaches to feeding. Analyses were performed separately for infants and toddlers and adjusted for maternal education level, ethnicity, and marital status.Results: Mothers of infants who breastfed for longer durations tended to report greater responsiveness to infant satiety cues (p≤0.01) and reduced pressuring in feeding complementary foods (p<0.05). Mothers of toddlers who breastfed for longer durations tended to report reduced pressuring in feeding complementary foods (p<0.01).Conclusion: These results suggest that breastfeeding may shape maternal feeding approaches related to responsiveness to infant cues as infants enter a period of complementary feeding, even after considering a range of demographic characteristics previously associated with breastfeeding behaviors. That responsiveness to feeding cues was not associated with breastfeeding duration in the toddler sample suggests that some aspects of this association might be isolated to infancy. © 2013 DiSantis et al.; licensee BioMed Central Ltd.
Cellular Noetherian algebras with finite global dimension are split quasi-hereditary
Creators: name: Cruz, Tiago
Publisher: name: arXiv
Year: 2021
Subjects: subject: Representation Theory (math.RT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16G30 (Primary) 20G43, 16E10 (Secondary)

description: We prove that cellular Noetherian algebras with finite global dimension are split quasi-hereditary over a regular commutative Noetherian ring with finite Krull dimension and their quasi-hereditary structure is unique, up to equivalence. In the process, we establish that a split quasi-hereditary algebra is semi-perfect if and only if the ground ring is a local commutative Noetherian ring. We give a formula to determine the global dimension of a split quasi-hereditary algebra over a commutative regular Noetherian ring (with finite Krull dimension) in terms of the ground ring and finite-dimensional split quasi-hereditary algebras. For the general case, we give upper bounds for the finitistic dimension of split quasi-hereditary algebras over arbitrary commutative Noetherian rings. We apply these results to Schur algebras over regular Noetherian rings and to Schur algebras over quotients rings of the integers.
description: Numeration adjusted to match published version, to appear in Journal of Algebra and Its Applications
Charged Randall-Sundrum black holes and N=4 super Yang-Mills in AdS(2)xS(2)
Creators: name: Kaus, Alexander
name: Reall, Harvey S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain some exact results for black holes in the Randall-Sundrum model with a single brane. We consider an extreme black hole charged with respect to a Maxwell field on the brane. The near-horizon geometry is determined. The induced metric on the brane and the black hole entropy are compared with the predictions of 4d General Relativity. There is good agreement for large black holes, with calculable subleading corrections. As a separate application, the bulk solution provides a gravitational dual for (strongly coupled, large N) N=4 SYM in AdS(2)xS(2) for arbitrary relative size of AdS(2) and S(2).
description: 13 pages
Chiral Magnonic Resonators: Rediscovering the Basic Magnetic Chirality in Magnonics
Creators: name: Kruglyak, V. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The outlook for producing useful practical devices within the paradigm of magnonics rests on our ability to emit, control and detect coherent exchange spin waves on the nanoscale. Here, we argue that all these key functionalities can be delivered by chiral magnonic resonators - soft magnetic elements chirally coupled, via magneto-dipole interaction, to magnonic media nearby. Starting from the basic principles of chiral coupling, we outline how they could be used to construct devices and explore underpinning physics, ranging from basic logic gates to field programmable gate arrays, in-memory computing, and artificial neural networks, and extending from one- to two- and three-dimensional architectures.
description: To be published as a Perspective in Applied Physics Letters
Bahadur efficiency for certain goodness--of--fit tests based on the empirical characteristic function
Creators: name: Meintanis, Simos G.
name: Milošević, Bojana
name: Obradović, Marko
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We study the Bahadur efficiency of several weighted L2--type goodness--of--fit tests based on the empirical characteristic function. The methods considered are for normality and exponentiality testing, and for testing goodness--of--fit to the logistic distribution. Our results are helpful in deciding which specific test a potential practitioner should apply. For the celebrated BHEP and energy tests for normality we obtain novel efficiency results, with some of them in the multivariate case, while in the case of the logistic distribution this is the first time that efficiencies are computed for any composite goodness--of--fit test.
title: Using artificial ground color to promote a restorative sidewalk experience: an experimental study based on manipulated street view images
Creators: name: Gu, Lanqing
name: Batistatou, Adamantia
name: Delevoye-Turrell, Yvonne N.
name: Roe, Jenny
name: Knöll, Martin
name: International Colour Association (AIC)
Publisher: name: International Colour Association (AIC)
Year: 2021

description: Color is frequently used in urban outdoor spaces, but little research has studied its psychological effects. This study explores the influence of sidewalk floor color on the restorative walking experience in a busy, inner city street lacking natural greenery. We used an achromatic street view image with no vegetation or trees as control. Red, green, and blue were used as “artificial” intervention colors in the sidewalk ground plane to generate 3 visual stimuli. Participants (n=66) rated the perceived restorativeness of the scene and their subjective mood on viewing each image via an online survey. The results indicate “artificial” green ground color, e.g. provided by paint or colored material, promoted a more restorative walking experience enhancing hedonic tone and arousal and increased relaxation more than red ground color. All three color-interventions improved perceived restorativeness and arousal. This study advances the understanding of the psychological impact of color in urban design.
title: Localizaciones raras de la brucelosis: más alla de la espondilodiscitis
Creators: name: Belda Gonzalez, Isabel
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Infection
subject: Calcifications / Calculi
subject: Abscess
subject: Diagnostic procedure
subject: Abscess delineation
subject: Ultrasound
subject: CT
subject: Conventional radiography
subject: Kidney
subject: Liver
subject: Abdomen

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
El objetivo es exponer las manifestaciones típicas de la brucelosis en humanos en localizaciones que no son las...
Gravitational waves in scalar-tensor theory to one-and-a-half post-Newtonian order
Creators: name: Bernard, Laura
name: Blanchet, Luc
name: Trestini, David
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute the gravitational waves generated by compact binary systems in a class of massless scalar-tensor (ST) theories to the 1.5 post-Newtonian (1.5PN) order beyond the standard quadrupole radiation in general relativity (GR). Using and adapting to ST theories the multipolar-post-Minkowskian and post-Newtonian formalisms originally defined in GR, we obtain the tail and non-linear memory terms associated with the dipole radiation in ST theory. The multipole moments and GW flux of compact binaries are derived for general orbits including the new 1.5PN contribution, and comparison is made with previous results in the literature. In the case of quasi-circular orbits, we present ready-to-use templates for the data analysis of detectors, and for the first time the scalar GW modes for comparisons with numerical relativity results.
description: 31 pages Minor corrections (in particular, correction of (3.17))
Historical Shifts in Brazilian P. falciparum Population Structure and Drug Resistance Alleles
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: Alleles
Biological Evolution
Brazil
Drug Resistance
Genetic Variation
Genotype
Geography
Humans
Microsatellite Repeats
Mutation
Plasmodium falciparum
Protozoan Proteins
Tetrahydrofolate Dehydrogenase

description: Previous work suggests that Brazilian Plasmodium falciparum has limited genetic diversity and a history of bottlenecks, multiple reintroductions due to human migration, and clonal expansions. We hypothesized that Brazilian P. falciparum would exhibit clonal structure. We examined isolates collected across two decades from Amapá, Rondônia, and Pará state (n = 190). By examining more microsatellites markers on more chromosomes than previous studies, we hoped to define the extent of low diversity, linkage disequilibrium, bottlenecks, population structure, and parasite migration within Brazil. We used retrospective genotyping of samples from the 1980s and 1990s to explore the population genetics of SP resistant dhfr and dhps alleles. We tested an existing hypothesis that the triple mutant dhfr mutations 50R/51I/108N and 51I/108N/164L developed in southern Amazon from a single origin of common or similar parasites. We found that Brazilian P. falciparum had limited genetic diversity and isolation by distance was rejected, which suggests it underwent bottlenecks followed by migration between sites. Unlike Peru, there appeared to be gene flow across the Brazilian Amazon basin. We were unable to divide parasite populations by clonal lineages and pairwise FST were common. Most parasite diversity was found within sites in the Brazilian Amazon, according to AMOVA. Our results challenge the hypothesis that triple mutant alleles arose from a single lineage in the Southern Amazon. SP resistance, at both the double and triple mutant stages, developed twice and potentially in different regions of the Brazilian Amazon. We would have required samples from before the 1980s to describe how SP resistance spread across the basin or describe the complex internal migration of Brazilian parasites after the colonization efforts of past decades. The Brazilian Amazon basin may have sufficient internal migration for drug resistance reported in any particular region to rapidly spread to other parts of basin under similar drug pressure.
Particle energy and Hawking temperature
Creators: name: Ding, Chikun
name: Wang, Mengjie
name: Jing, Jiliang
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Some authors have recently found that the tunneling approach gives a different Hawking temperature for a Schwarzschild black hole in a different coordinate system. In this paper, we find that to work out the Hawking temperature in a different coordinate system by the tunneling approach, we must use the correct definition of the energy of the radiating particles. By using a new definition of the particle energy, we obtain the correct Hawking temperature for a Schwarzschild black hole in two dynamic coordinate systems, the Kruskal-Szekers and dynamic Lemaitre coordinate systems.
description: 11 pages; Accepted by PLB
Evapotranspiration from a dry Douglas fir forest
Creators: name: Curtis, John Reeves
Publisher: name: University of British Columbia
Year: 2010

description: Evapotranspiration measurements using the Bowen ratio/energy balance technique were, made over a dry Douglas fir forest. Soil water matric potential over the period of measurement varied from 0 to -10.5 bars. With the premise that the equilibrium evaporation rate associated with adequate water supply essentially expresses evapotranspiration as a fraction of daily net radiation, the ratio of latent heat flux to net radiation for 24-hour periods is examined as a function of soil water matric potential. This ratio, is reduced to approximately half its maximum value as the matric potential approaches -10 bars for the experimental site. The reduction is not as great-as that implied by changes in soil water storage, indicating that evapotranspiration of water not originating in the root zone is carried on during periods of considerable water stress. While some water may be flowing upward from below the root zone, it is felt that over half of the daily evapotranspired water is released from storage in tree stems during the most severe period.
title: Diagnóstico diferencial de linfadenopatías de procesos patológicos poco frecuentes. Evaluación mediante ecografia y TC
Creators: name: Pérez Sánchez, Pablo
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Lymph nodes
subject: CT
subject: Ultrasound-Colour Doppler

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Describir los hallazgos radiológicos de las adenopatíasde diferentes procesos patológicos,
que permitan establecer un diagnóstico diferencial...
The linearity response of the Planck-LFI flight model receivers
Creators: name: Mennella, A.
name: Villa, F.
name: Terenzi, L.
name: Cuttaia, F.
name: Battaglia, P.
name: Bersanelli, M.
name: Butler, R. C.
name: D'Arcangelo, O.
name: Artal, E.
name: Davis, R.
name: Frailis, M.
name: Franceschet, C.
name: Galeotta, S.
name: Gregorio, A.
name: Hughes, N.
name: Jukkala, P.
name: Kettle, D.
name: Kilpiä, V. -H.
name: Laaninen, M.
name: Lapolla, P. M.
name: Leonardi, R.
name: Leutenegger, P.
name: Lowe, S.
name: Mandolesi, N.
name: Maris, M.
name: Meinhold, P.
name: Mendes, L.
name: Miccolis, M.
name: Morgante, G.
name: Roddis, N.
name: Sandri, M.
name: Silvestri, R.
name: Stringhetti, L.
name: Tomasi, M.
name: Tuovinen, J.
name: Valenziano, L.
name: Zacchei, A.
name: Varis, J.
name: Wilkinson, A.
name: Zonca, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this paper we discuss the linearity response of the Planck-LFI receivers, with particular reference to signal compression measured on the 30 and 44 GHz channels. In the article we discuss the various sources of compression and present a model that accurately describes data measured during tests performed with individual radiomeric chains. After discussing test results we present the best parameter set representing the receiver response and discuss the impact of non linearity on in-flight calibration, which is shown to be negligible.
description: this paper is part of the Prelaunch status LFI papers published on JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/jinst; This is an author-created, un-copyedited version of an article accepted for publication in JINST. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at 10.1088/1748-0221/4/12/T12011.
Asymptotic regularity of powers of ideals of points in a weighted projective plane
Creators: name: Cutkosky, Steven Dale
name: Kurano, Kazuhiko
Publisher: name: arXiv
Year: 2009
Subjects: subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 13A99, 14Q10

description: In this paper we study the asymptotic behavior of the regularity of symbolic powers of ideals of points in a weighted projective plane. By a result of Cutkosky, Ein and Lazarsfeld, regularity of such powers behaves asymptotically like a linear function. We study the difference between regularity of such powers and this linear function. Under some conditions, we prove that this difference is bounded, or eventually periodic. As a corollary we show that, if there exists a negative curve, then the regularity of symbolic powers of a monomial space curve is eventually a periodic linear function. We give a criterion for the validity of Nagata's conjecture in terms of the lack of existence of negative curves.
description: 16 pages
Higher-dimensional stick percolation
Creators: name: Broman, Erik I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35 (primary) 60D05 (secondary)

description: We consider two cases of the so-called stick percolation model with sticks of length $L.$ In the first case, the orientation is chosen independently and uniformly, while in the second all sticks are oriented along the same direction. We study their respective critical values $λ_c(L)$ of the percolation phase transition, and in particular we investigate the asymptotic behavior of $λ_c(L)$ as $L\to \infty$ for both of these cases. In the first case we prove that $λ_c(L)\sim L^{-2}$ for any $d\geq 2,$ while in the second we prove that $λ_c(L)\sim L^{-1}$ for any $d\geq 2.$
description: 34 pages, 9 figures
Homeostasis model assessment to detect insulin resistance and identify patients at high risk of breast cancer development: National Cancer Institute of Naples experience
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: Metabolic syndrome
Insulin resistance
Breast cancer
Postmenopausal
HOMA-IR

description: Background: Metabolic Syndrome (MS) has been correlated to breast carcinogenesis. MS is common in the general population (34%) and increases with age and body mass index. Although the link between obesity, MS and hormone related cancer incidence is now widely recognized, the molecular mechanisms at the basis of such increase are still poorly characterized. A crucial role is supposed to be played by the altered insulin signalling, occurring in obese patients, which fuels cancer cell growth, proliferation and survival. Therefore we focused specifically on insulin resistance to investigate clinically the potential role of insulin in breast carcinogenesis. Methods. 975 patients were enrolled and the association between MS, insulin resistance, and breast cancer was evaluated. Women were stratified by age and menopausal status. Insulin resistance was measured through the Homeostasis Model Assessment score (HOMA-IR). The cut off value to define insulin resistance was HOMA-IR ≥ 2.50. Results: Higher prevalence of MS (35%) was found among postmenopausal women with breast cancer compared to postmenopausal healthy women (19%) [OR 2.16]. A broad range of BMI spanning 19-48 Kg/m§ssup§2§esup§ was calculated. Both cases and controls were characterized by BMI ≥ 25 Kg/m§ssup§2§esup§ (58% of cases compared to 61% of controls). Waist circumference >88 cm was measured in 53% of cases - OR 1.58- (95% CI 0.8-2.8) and in 46% of controls. Hyperinsulinemia was detected in 7% of cases - OR 2.14 (95% CI 1.78-2.99) and only in 3% of controls. HOMA-IR score was elevated in 49% of cases compared to 34% of controls [OR 1.86], suggesting that insulin resistance can nearly double the risk of breast cancer development. Interestingly 61% of women operated for breast cancer (cases) with HOMA-IR ≥ 2.5 presented subclinical insulin resistance with fasting plasma glucose levels and fasting plasma insulin levels in the normal range. Both android fat distribution and insulin resistance correlated to MS in the subgroup of postmenopausal women affected by breast cancer. Conclusions: Our results further support the hypothesis that MS, in particular insulin resistance and abdominal fat, can be considered as risk factors for developing breast cancer after menopause. We suggest that HOMA-IR, rather than fasting plasma glucose and fasting plasma insulin levels alone, could be a valuable tool to identify patients with subclinical insulin resistance, which could be relevant for primary prevention and for high risk patient screening. © 2013 Capasso et al.; licensee BioMed Central Ltd.
Alternative measures to address antibiotic resistance
Creators: name: Dr. M. Sonali, Assistant Professor, Department of Veterinary Microbiology,  Dr. E. Kumar, Assistant Professor, Department of Veterinary public health and epidemiology, College of Veterinary Science, PVNR Telangana Veterinary University, Rajendranagar, Hyderabad
Publisher: name: Zenodo
Year: 2024

description: Antibiotics are a pillar of modern medicine. Their use has reduced childhood mortality, and supported invasive surgery, complex treatments, and robotics-guided surgeries by managing secondary bacterial infections. Several factors, such as incorrect antibiotic use, patient factors, over-prescription by physicians, monotherapy, misuse of antibiotics as a business model by hospitals, prescriptions from the veterinary sector, commercial and marketing promotion, over-the-counter sale of antibiotics, prevailing microbiological testing methods, and the role of globalization in economic growth are combined with the extreme decline in antibiotic research, were only fueled the development of antimicrobial resistance.   The increasing use of broad-spectrum antibiotics contributes to the development of MDR organisms. This also adds to the risk of re-emergence of many diseases like the emergence of XDR-TB (extensively drug-resistant tuberculosis) and the development of resistance against tigecycline and colistin, regarded as “salvage” medicines in medical treatment. The World Health Organization (WHO) has identified AMR as one of the three most severe threats to human health. Environmental bacteria may acquire antibiotic resistance by co-existence, evolution, or horizontal gene transfer (HGT), which can significantly impact antimicrobial resistance compared to vertical gene transfer.
Control of graphene's properties by reversible hydrogenation
Creators: name: Elias, D. C.
name: Nair, R. R.
name: Mohiuddin, T. M. G.
name: Morozov, S. V.
name: Blake, P.
name: Halsall, M. P.
name: Ferrari, A. C.
name: Boukhvalov, D. W.
name: Katsnelson, M. I.
name: Geim, A. K.
name: Novoselov, K. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Graphene - a monolayer of carbon atoms densely packed into a hexagonal lattice - has one of the strongest possible atomic bonds and can be viewed as a robust atomic-scale scaffold, to which other chemical species can be attached without destroying it. This notion of graphene as a giant flat molecule that can be altered chemically is supported by the observation of so-called graphene oxide, that is graphene densely covered with hydroxyl and other groups. Unfortunately, graphene oxide is strongly disordered, poorly conductive and difficult to reduce to the original state. Nevertheless, one can imagine atoms or molecules being attached to the atomic scaffold in a strictly periodic manner, which should result in a different electronic structure and, essentially, a different crystalline material. A hypothetical example for this is graphane, a wide-gap semiconductor, in which hydrogen is bonded to each carbon site of graphene. Here we show that by exposing graphene to atomic hydrogen, it is possible to transform this highly-conductive semimetal into an insulator. Transmission electron microscopy reveals that the material retains the hexagonal lattice but its period becomes markedly shorter than that of graphene, providing direct evidence for a new graphene-based derivative. The reaction with hydrogen is found to be reversible so that the original metallic state and lattice spacing are restored by annealing and even the quantum Hall effect recovers. Our work proves the concept of chemical modification of graphene, which promises a whole range of new two-dimensional crystals with designed electronic and other properties.
title: Migraña oftalmoplejica: hallazgos en RM.
Creators: name: de Lara Bendahan, Victoria
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Neuroradiology peripheral nerve
subject: MR

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
 La migraña oftalmopléjica (MO) es una entidad que suele iniciarse en la infancia y que se caracteriza por episodios recurrentes de cefalea migrañosa asociados a parálisis de pares craneales oculomotores,
afectando con más frecuencia al...
Non-Singular Collapse Scenario From Matter-Curvature Coupling
Creators: name: Ziaie, A. H.
name: Moradpour, H.
name: Sabet, M. Mohammadi
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In the present work we study spherically symmetric gravitational collapse of a homogeneous perfect fluid in the context of Generalized Rastall Theory (GRT). In this modified version of the original {Rastall Gravity (RG)}, the coupling parameter which is a representative of matter-curvature interaction is no longer a constant parameter. Such a dynamic coupling may play the role of dark energy which is responsible for the present accelerating expansion of the Universe. Assuming then a linear equation of state (EoS) for the fluid profiles, we seek for physically reasonable collapse scenarios in which the spacetime singularity that occurs in general relativity (GR) is replaced by a non-singular bounce. We therefore find that depending on model parameters, the collapse process which starts from regular initial data, will halt at a minimum value for the scale function and then turns into an expansion at a finite time. We further find that there exists a minimum value for the initial radius of collapsing object so that for radii smaller than this minimum radius, formation of apparent horizon can be avoided and hence the bounce can be visible to the observers within the Universe. We also compare our results to quantum corrected collapse scenarios and find that the mutual interaction between matter and geometry can play the role of quantum corrections to energy density.
description: 10 Pages & 5 Figures
MS-kNN: Protein function prediction by integrating multiple data sources
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: Algorithms
Genomics
Humans
Protein Interaction Mapping
Proteins
Sequence Analysis, Protein
Transcriptome
Vocabulary, Controlled

description: Background: Protein function determination is a key challenge in the post-genomic era. Experimental determination of protein functions is accurate, but time-consuming and resource-intensive. A cost-effective alternative is to use the known information about sequence, structure, and functional properties of genes and proteins to predict functions using statistical methods. In this paper, we describe the Multi-Source k-Nearest Neighbor (MS-kNN) algorithm for function prediction, which finds k-nearest neighbors of a query protein based on different types of similarity measures and predicts its function by weighted averaging of its neighbors' functions. Specifically, we used 3 data sources to calculate the similarity scores: sequence similarity, protein-protein interactions, and gene expressions.Results: We report the results in the context of 2011 Critical Assessment of Function Annotation (CAFA). Prior to CAFA submission deadline, we evaluated our algorithm on 1,302 human test proteins that were represented in all 3 data sources. Using only the sequence similarity information, MS-kNN had term-based Area Under the Curve (AUC) accuracy of Gene Ontology (GO) molecular function predictions of 0.728 when 7,412 human training proteins were used, and 0.819 when 35,622 training proteins from multiple eukaryotic and prokaryotic organisms were used. By aggregating predictions from all three sources, the AUC was further improved to 0.848. Similar result was observed on prediction of GO biological processes. Testing on 595 proteins that were annotated after the CAFA submission deadline showed that overall MS-kNN accuracy was higher than that of baseline algorithms Gotcha and BLAST, which were based solely on sequence similarity information. Since only 10 of the 595 proteins were represented by all 3 data sources, and 66 by two data sources, the difference between 3-source and one-source MS-kNN was rather small.Conclusions: Based on our results, we have several useful insights: (1) the k-nearest neighbor algorithm is an efficient and effective model for protein function prediction; (2) it is beneficial to transfer functions across a wide range of organisms; (3) it is helpful to integrate multiple sources of protein information. © 2013 Lan et al.; licensee BioMed Central Ltd.
Group Velocity of Discrete-Time Quantum Walks
Creators: name: Kempf, Achim
name: Portugal, Renato
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that certain types of quantum walks can be modeled as waves that propagate in a medium with phase and group velocities that are explicitly calculable. Since the group and phase velocities indicate how fast wave packets can propagate causally, we propose the use of these wave velocities in a new definition for the hitting time of quantum walks. The new definition of hitting time has the advantage that it requires neither the specification of a walker's initial condition nor of an arrival probability threshold. We give full details for the case of quantum walks on the Cayley graphs of Abelian groups. This includes the special cases of quantum walks on the line and on hypercubes.
description: 7 pages, 3 figures
Exact Results for Interacting Hard Rigid Rotors on a d-Dimensional Lattice
Creators: name: Saryal, Sushant
name: Dhar, Deepak
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the entropy of a set of identical hard objects, of general shape, with each object pivoted on the vertices of a d-dimensional regular lattice of lattice spacing a, but can have arbitrary orientations. When the pivoting point is situated asymmetrically on the object, we show that there is a range of lattice spacings a, where in any orientation, a particle can overlap with at most one of its neighbors. In this range, the entropy of the system of particles can be expressed exactly in terms of the grand partition function of coverings of the base lattice by dimers at a finite negative activity. The exact entropy in this range is fully determined by the second virial coefficient. Calculation of the partition function is also shown to be reducible to that of the same model with discretized orientations. We determine the exact functional form of the probability distribution function of orientations at a site. This depends on the density of dimers for the given activity in the dimer problem, that we determine by summing the corresponding Mayer series numerically. These results are verified by numerical simulations.
title: Tratamiento endovascular de la estenosis de carótida sin empleo de sistemas de protección en pacientes mayores de 75 años.
Creators: name: Jimenez-Gomez, Elvira
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Neuroradiology brain
subject: Catheter arteriography
subject: Arteriosclerosis

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
Se sabe que la cirugía presenta menor tasa de eventos adversos en pacientes mayores de 75 años con estenosis de carótida,
pero algunos no son candidatos a la cirugía secundariamente a comorbilidad.
La angioplastia de carótida mediante...
Self-Adjoint Time Operator of a Quantum Field
Creators: name: Yau, Hou Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We study the properties of a quantum field with time as a dynamical variable. Temporal vibrations are introduced to restore the symmetry between time and space in a matter field. The system with vibrations of matter in time and space obeys the Klein-Gordon equation and Schrodinger equation. The energy observed is quantized under the constraint that a particle's mass is on shell. This real scalar field has the same properties of a zero-spin bosonic field. Furthermore, the internal time of this system can be represented by a self-adjoint operator without contradicting the Pauli's theorem. Neutrino can be an interesting candidate for investigating the effects of these temporal and spatial vibrations because of its extremely light weight.
description: 16 pages. Published version
Low Concentrations of Silver Nanoparticles in Biosolids Cause Adverse Ecosystem Responses under Realistic Field Scenario
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2013
Subjects: Biomass
Ecosystem
Metal Nanoparticles
Microscopy, Electron, Transmission
Plants
Silver
Silver Nitrate

description: A large fraction of engineered nanomaterials in consumer and commercial products will reach natural ecosystems. To date, research on the biological impacts of environmental nanomaterial exposures has largely focused on high-concentration exposures in mechanistic lab studies with single strains of model organisms. These results are difficult to extrapolate to ecosystems, where exposures will likely be at low-concentrations and which are inhabited by a diversity of organisms. Here we show adverse responses of plants and microorganisms in a replicated long-term terrestrial mesocosm field experiment following a single low dose of silver nanoparticles (0.14 mg Ag kg-1 soil) applied via a likely route of exposure, sewage biosolid application. While total aboveground plant biomass did not differ between treatments receiving biosolids, one plant species, Microstegium vimeneum, had 32 % less biomass in the Slurry+AgNP treatment relative to the Slurry only treatment. Microorganisms were also affected by AgNP treatment, which gave a significantly different community composition of bacteria in the Slurry+AgNPs as opposed to the Slurry treatment one day after addition as analyzed by T-RFLP analysis of 16S-rRNA genes. After eight days, N2O flux was 4.5 fold higher in the Slurry+AgNPs treatment than the Slurry treatment. After fifty days, community composition and N2O flux of the Slurry+AgNPs treatment converged with the Slurry. However, the soil microbial extracellular enzymes leucine amino peptidase and phosphatase had 52 and 27% lower activities, respectively, while microbial biomass was 35% lower than the Slurry. We also show that the magnitude of these responses was in all cases as large as or larger than the positive control, AgNO3, added at 4-fold the Ag concentration of the silver nanoparticles. © 2013 Colman et al.
Energy conditions for Inhomogeneous EOS and its Thermodynamics analysis with the resolution on finite time future singularity problems
Creators: name: Kar, Alokananda
name: Sadhukhan, Shouvik
name: Chattopadhay, Surajit
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In this paper we study two different cases of inhomogeneous EOS of the form p_d = ω(t)ρ_d+w_1 f(H, t) . We derive the energy density of dark fluid and dark matter component for both the cases. Further we calculate the evolution of energy density, gravitational constant and cosmological constant. We also explore the finite time singularity and thermodynamic stability conditions for the two cases of EOS. Finally, we discuss the thermodynamics of inhomogeneous EOS with the derivation of internal energy, Temperature and entropy and also show that all the stability conditions are satisfied for the two cases of EOS
description: 28 pages, 26 figures
A completely monotonic function involving the tri- and tetra-gamma functions
Creators: name: Qi, Feng
name: Guo, Bai-Ni
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26A48, 33B15

description: The psi function $ψ(x)$ is defined by $ψ(x)=\frac{Γ'(x)}{Γ(x)}$ and $ψ^{(i)}(x)$ for $i\in\mathbb{N}$ denote the polygamma functions, where $Γ(x)$ is the gamma function. In this paper we prove that a function involving the difference between $[ψ'(x)]^2+ψ''(x)$ and a proper fraction of $x$ is completely monotonic on $(0,\infty)$.
description: 10 pages
Neutron star properties in density-dependent relativistic Hartree-Fock theory
Creators: name: Sun, Bao Yuan
name: Long, Wen Hui
name: Meng, Jie
name: Lombardo, U.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: With the equations of state provided by the newly developed density dependent relativistic Hartree-Fock (DDRHF) theory for hadronic matter, the properties of the static and $β$-equilibrium neutron stars without hyperons are studied for the first time, and compared to the predictions of the relativistic mean field (RMF) models and recent observational data. The influences of Fock terms on properties of asymmetric nuclear matter at high densities are discussed in details. Because of the significant contributions from the $σ$- and $ω$-exchange terms to the symmetry energy, large proton fractions in neutron stars are predicted by the DDRHF calculations, which strongly affect the cooling process of the star. The critical mass about 1.45 $M_\odot$, close to the limit 1.5 $M_\odot$ determined by the modern soft X-ray data analysis, is obtained by DDRHF with the effective interactions PKO2 and PKO3 for the occurrence of direct Urca process in neutron stars. The maximum masses of neutron stars given by the DDRHF calculations lie between 2.45 M$_\odot$ and 2.49 M$_\odot$, which are in reasonable agreement with high pulsar mass $2.08 \pm 0.19 M_\odot$ from PSR B1516+02B. It is also found that the mass-radius relations of neutron stars determined by DDRHF are consistent with the observational data from thermal radiation measurement in the isolated neutron star RX J1856, QPOs frequency limits in LMXBs 4U 0614+09 and 4U 1636-536, and redshift determined in LMXBs EXO 0748-676.
description: 28 pages, 11 figures
Damping in high-frequency metallic nanomechanical resonators
Creators: name: Hoehne, F.
name: Pashkin, Yu. A.
name: Astafiev, O.
name: Faoro, L.
name: Ioffe, L. B.
name: Nakamura, Y.
name: Tsai, J. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied damping in polycrystalline Al nanomechanical resonators by measuring the temperature dependence of their resonance frequency and quality factor over a temperature range of 0.1 - 4 K. Two regimes are clearly distinguished with a crossover temperature of 1 K. Below 1 K we observe a logarithmic temperature dependence of the frequency and linear dependence of damping that cannot be explained by the existing standard models. We attribute these phenomena to the effect of the two-level systems characterized by the unexpectedly long (at least two orders of magnitude longer) relaxation times and discuss possible microscopic models for such systems. We conclude that the dynamics of the two-level systems is dominated by their interaction with one-dimensional phonon modes of the resonators.
description: 5 pages, 3 figures
Dark matter in minimal supergravity with type-II seesaw
Creators: name: Esteves, J. N.
name: Hirsch, M.
name: Kaneko, S.
name: Porod, W.
name: Romao, J. C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the relic density of the lightest neutralino in a supersymmetric seesaw type-II (``triplet seesaw'') model with minimal supergravity boundary conditions at the GUT scale. The presence of a triplet below the GUT scale, required to explain measured neutrino data in this setup, leads to a characteristic deformation of the sparticle spectrum with respect to the pure mSugra expectations, affecting the calculated relic dark matter (DM) density. We discuss how the DM allowed regions in the (m_0,M_{1/2}) plane change as a function of the (type-II) seesaw scale. We also compare the constraints imposed on the models parameter space form upper limits on lepton flavour violating (LFV) decays to those imposed by DM. Finally, we briefly comment on uncertainties in the calculation of the relic neutralino density due to uncertainties in the measured top and bottom masses.
description: 20 pages, 21 Figures in Encapsulated Postscript
Two types of metastable magnetic hopfions
Creators: name: Metlov, Konstantin L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Localized magnetic topological solitons with Hopf index of 1 in an unbounded bulk magnet are studied theoretically, starting with the classical micromagnetic Hamiltonian. It is shown analytically that (like Bloch and Néel walls in classical magnetism) there are two possible stable configurations of these solitons, which are equivalent topologically. Their stability regions are plotted on a phase diagram in the magnetic field -- uniaxial anisotropy space for different normalized magnetostatic interaction strengths. For some parameters both types of hopfions can be stable.
description: 5 pages, 2 figures
Genetic and environmental factors associated with the risk of cognitive decline and dementia
Creators: name: Porcellini, Elisa <1978>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: MED/04 Patologia generale

description: AD is the most common age related neurodegenerative disease in the industrialized world. Clinically AD is defined as a progressing decline of cognitive functions. Neuropathologically, AD is characterized by the aggregation of b-amyloid (Ab) peptide in the form of extracellular senile plaques, and hyperphosphorlylated tau protein in the form of intracellular neurofibrillary tangles. These neuropathological hallmarks are often accompanied by abundant microvascular damage and pronounced inflammation of the affected brain regions. In this thesis we investigated several aspects of AD focusing on the genetic aspect. We confirmed that Alpha 1 antichymotrypsin (ACT), an acute phase protein, was associated to AD subjects, being plasma levels higher in AD cases than controls. In addition, in a GWA study we demonstrated that two different gene, Clusterin and CR1 were strongly associated to AD. A single gene association not explain such a complex disease like AD. The goal should be to created a network of genetic, phenotypic and clinical data associated to AD. We used a new algorithm, the ANNs, aimed to map variables and search for connectivity among variables. We found specific variables associated to AD like cholesterol levels, the presence of variation in HMGCR enzyme and the age. Other factors such as the BMI, the amount of HDL and blood folate levels were also associated with AD. Pathogen infections, above all viral infections, have been previously associated to AD. The hypothesis suggests that virus and in particular herpes virus could enter the brain when an individual becomes older, perhaps because of a decline in the immune system. Our new hypothesis is that the presence of SNPs in our GWA gene study results in a genetic signature that might affect individual brain susceptibility to infection by herpes virus family during aging.
R-Matrix presentation of quantum affine algebra in type $A_{2n-1}^{(2)}$
Creators: name: Jing, Naihuan
name: Zhang, Xia
name: Liu, Ming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: In this paper, we give an RTT presentation of the twisted quantum affine algebra of type $A_{2n-1}^{(2)}$ and show that it is isomorphic to the Drinfeld new realization via the Gauss decomposition of the L-operators. This provides the first such presentation for twisted quantum affine algebras with nontrivial central element.
description: 42pp. arXiv admin note: text overlap with arXiv:1903.00204
The CARMENES search for exoplanets around M dwarfs. Diagnostic capabilities of strong K I lines for photosphere and chromosphere
Creators: name: Fuhrmeister, B.
name: Czesla, S.
name: Nagel, E.
name: Reiners, A.
name: Schmitt, J. H. M. M.
name: Jeffers, S. V.
name: Caballero, J. A.
name: Shulyak, D.
name: Johnson, E. N.
name: Zechmeister, M.
name: Montes, D.
name: López-Gallifa, Á.
name: Ribas, I.
name: Quirrenbach, A.
name: Amado, P. J.
name: Galadí-Enríquez, D.
name: Hatzes, A. P.
name: Kürster, M.
name: Danielski, C.
name: Béjar, V. J. S.
name: Kaminski, A.
name: Morales, J. C.
name: Osorio, M. R. Zapatero
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: There are several strong K I lines found in the spectra of M dwarfs, among them the doublet near 7700 AA and another doublet near 12 500 AA. We study these optical and near-infrared doublets in a sample of 324 M dwarfs, observed with CARMENES, the high-resolution optical and near-infrared spectrograph at Calar Alto, and investigate how well the lines can be used as photospheric and chromospheric diagnostics. Both doublets have a dominant photospheric component in inactive stars and can be used as tracers of effective temperature and gravity. For variability studies using the optical doublet, we concentrate on the red line component because this is less prone to artefacts from telluric correction in individual spectra. The optical doublet lines are sensitive to activity, especially for M dwarfs later than M5.0 V where the lines develop an emission core. For earlier type M dwarfs, the red component of the optical doublet lines is also correlated with H$α$ activity. We usually find positive correlation for stars with H$α$ in emission, while early-type M stars with H$α$ in absorption show anti-correlation. During flares, the optical doublet lines can exhibit strong fill-in or emission cores for our latest spectral types. On the other hand, the near-infrared doublet lines very rarely show correlation or anti-correlation to H$α$ and do not change line shape significantly even during the strongest observed flares. Nevertheless, the near-infrared doublet lines show notable resolved Zeeman splitting for about 20 active stars which allows to estimate the magnetic fields B.
description: accepted to A&A