cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ИССЛЕДОВАНИЕ ВЛИЯНИЯ СПЕЦИФИЧЕСКОЙ АНТИГЕНЕМИИ НА БИОХИМИЧЕСКИЕ СДВИГИ У ДЕТЕЙ, ПОДВЕРГШИХСЯ ПИЩЕВЫМ ТОКСИКОИНФЕКЦИЯМ, ВЫЗВАННЫМ САЛЬМОНЕЛЛАМИ, ЭШЕРИХИЯМИ И ПРОТЕЯМИ
Creators: name: Исмоилова, Н.А.
name: Хайитбаева, Мохинур
name: Холмуродов, Армон
name: Холикулов, Шерзод
Publisher: name: Zenodo
Year: 2023

description: Это исследование обнаружило, что у детей, страдающих пищевыми токсикоинфекциями, вызванными сальмонеллами, эшерихиями и протеями, наблюдается выраженная антигенемия, которая варьирует в зависимости от степени тяжести заболевания и его продолжительности. Это сопровождается снижением общего белка и альбумина, а также незначительным повышением уровня АлАТ И АсАТ. Таким образом, наличие антигенемии и биохимических сдвигов может служить дополнительным критерием для оценки тяжести патологического процесса и интоксикационного синдрома у детей с ПТИ. Выявленная обратная корреляционная взаимосвязь между антигеном и общим белком и альбумином, а также положительная корреляционная взаимосвязь между антигеном и АлАТ, АсАТ свидетельствуют о патогенетическом значении специфических токсинов в развитии интоксикационного синдрома у детей с пищевыми токсикоинфекциями.
Beleuchtungsverfahren zur problemspezifischen Bildgewinnung für die automatische Sichtprüfung
Creators: name: Gruna, Robin
Publisher: name: Karlsruhe
Year: 2013
Subjects: Automatische Sichtprüfung
Beleuchtungsmodellierung
Beleuchtungsoptimierung
optische Merkmalsextraktion

description: Der Beleuchtungsentwurf in der automatischen Sichtprüfung ist von zentraler Bedeutung und hat enormen Einfluss auf die Leistungsfähigkeit eines Sichtprüfsystems. In dieser Arbeit wird ein neuartiger problemspezifischer Beleuchtungsentwurf vorgestellt, der durch eine optische, in die physikalische Bildgewinnung vorgelagerte, Merkmalsextraktion motiviert ist. Der Ansatz wird auf Grundlage eines physikalisch begründeten Kamera- und Beleuchtungsmodells signaltheoretisch analysiert sowie im Rahmen verschiedener Anwendungsszenarien experimentell evaluiert.
A Novel Millimeter-Wave Dual-Fed Phased Array for Beam Steering
Creators: name: Topak, Ali Eray
Publisher: name: Karlsruhe
Year: 2013
Subjects: Phased arrays
Phase shifters
Beam steering
Millimeter wave integrated circuits
Linear antenna arrays

description: In this dissertation, a novel beam steering approach is presented based on the superposition of two squinted antenna beams. The two antenna beams are realized by exciting the opposite feeds of a dual-fed array antenna. A change in the phase difference and amplitude ratio between the input signals, using only one phase shifter and two variable gain amplifiers or only two I-Q vector modulators, steers the main beam in different directions electronically.
Predictive AdS/QCD Model for Mass Spectra of Mesons with Three Flavors
Creators: name: Sui, Yan-Qin
name: Wu, Yue-Liang
name: Yang, Yi-Bo
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The predictive soft-wall AdS/QCD model with a modified 5D metric at the infrared region is constructed to obtain a non-trivial dilaton solution for three flavor quarks $u$, $d$ and $s$. Such a model is shown to incorporate both the chiral symmetry breaking and linear confinement. After considering some high-order terms including the $U(1)_L\times U(1)_R$ chiral symmetry breaking term, we find that the resulting predictions for the SU(3) octet and singlet resonance states of pseudoscalar, scalar, vector and axial-vector mesons agree well with the experimentally confirmed resonance states. Contributions from the instanton effects given by the determinant term are also discussed. It is observed that the chiral symmetry breaking phenomena of $SU(3)_L\times SU(3)_R$ and $U(1)_L\times U(1)_R$ can be well described in this model, while the SU(3) flavor symmetry breaking effect due to quark mass difference in the source term is not enough to explain all of the current experimental data.
description: 20 pages, 1 figure, minor corrections, reference added, to appear in Phys. Rev. D
Deeper discussion of Schrödinger invariant and Logarithmic sectors of higher-curvature gravity
Creators: name: Ayón-Beato, Eloy
name: Giribet, Gaston
name: Hassaïne, Mokhtar
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The aim of this paper is to explore D-dimensional theories of pure gravity whose space of solutions contains certain class of AdS-waves, including in particular Schrodinger invariant spacetimes. This amounts to consider higher order theories, and the natural case to start with is to analyze generic square-curvature corrections to Einstein-Hilbert action. In this case, the Schrodinger invariant sector in the space of solutions arises for a special relation between the coupling constants appearing in the action. On the other hand, besides the Schrodinger invariant configurations, logarithmic branches similar to those of the so-called Log-gravity are also shown to emerge for another special choice of the coupling constants. These Log solutions can be interpreted as the superposition of the massless mode of General Relativity and two scalar modes that saturate the Breitenlohner-Freedman bound (BF) of the AdS space on which they propagate. These solutions are higher-dimensional analogues of those appearing in three-dimensional massive gravities with relaxed AdS_3 asymptotic. Other sectors of the space of solutions of higher-curvature theories correspond to oscillatory configurations, which happen to be below the BF bound. Also, there is a fully degenerated sector, for which any wave profile is admitted. We comment on the relation between this degeneracy and the non-renormalization of the dynamical exponent of the Schrodinger spaces. Our analysis also includes more general gravitational actions with non-polynomial corrections consisting of arbitrary functions of the square-curvature invariants. The same sectors of solutions are shown to exist for this more general family of theories. We finally consider the Chern-Simons modified gravity in four dimensions, for which we derive both the Schrodinger invariant as well as the logarithmic sectors.
description: This paper is dedicated to the memory of Laurent Houart
Softwareframework für Prozessoren mit variablen Befehlssatzarchitekturen
Creators: name: Stripf, Timo
Publisher: name: Karlsruhe
Year: 2013

description: Die Kahrisma-Architektur erlaubt mittels grobgranularer Rekonfiguration der Mikroarchitektur das Umschalten zwischen einfacher und komplexer Prozessoren. Eine effiziente Umsetzung dieser Flexibilität erfordert allerdings die Verwendung einer rekonfigurierbaren Befehlssatzarchitektur (ISA). Daher wurde innerhalb dieser Arbeit ein mixed-ISA Softwareframework realisiert, das die Programmierung von C/C++-Anwendungen mit variablen ISAs ermöglicht und anhand der Kahrisma-Architektur demonstriert.
Characterization of the human thyroid epigenome
Creators: name: Siu, Celia
Publisher: name: University of British Columbia
Year: 2017

description: The thyroid gland, necessary for normal human growth and development, is essential for the regulation of metabolism. Its function – to produce and secrete appropriate levels of thyroid hormone – is simple; however accurate assessment of thyroid abnormality is challenging and a fundamental understanding of the normal thyroid is therefore needed. One way to characterize the normal functioning of the thyroid gland is to study the epigenome and resulting transcriptome within its constituent cells. In this study, we compare the consistency of chromatin state annotations across the epigenomes from the grossly uninvolved tumour-adjacent thyroid tissue of four human individuals using ChIP-seq and RNA-seq. We profile four activating (H3K4me1, H3K4me3, H3K27ac, H3K36me3) and two repressing (H3K9me3, H3K27me3) histone modifications, identify chromatin states using a hidden Markov model, produce a novel metric for model selection, and establish epigenomic maps of 19 chromatin states. We found that epigenetic features characterizing promoters and transcription elongation tend to more consistent across epigenomes and that epigenetically active genes consistent across all epigenomes tend to have higher expression than those that are not marked as epigenetically active in all samples. We also identified a set of 18 genes epigenetically active and consistently expressed in the thyroid that are likely relevant to thyroid function. Altogether, we believe the epigenomes presented in this work represent a useful resource to gain a deeper understanding of the underlying molecular biology of thyroid function and provide contextual information of thyroid and human epigenomic data for comparison and integration into future studies.
Dark energy from primordial inflationary quantum fluctuations
Creators: name: Ringeval, Christophe
name: Suyama, Teruaki
name: Takahashi, Tomo
name: Yamaguchi, Masahide
name: Yokoyama, Shuichiro
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that current cosmic acceleration can be explained by an almost massless scalar field experiencing quantum fluctuations during primordial inflation. Provided its mass does not exceed the Hubble parameter today, this field has been frozen during the cosmological ages to start dominating the universe only recently. By using supernovae data, completed with baryonic acoustic oscillations from galaxy surveys and cosmic microwave background anisotropies, we infer the energy scale of primordial inflation to be around a few TeV, which implies a negligible tensor-to-scalar ratio of the primordial fluctuations. Moreover, our model suggests that inflation lasted for an extremely long period. Dark energy could therefore be a natural consequence of cosmic inflation close to the electroweak energy scale.
description: 5 pages, 2 figures, uses RevTeX. Physical discussion extended, misprints corrected, references added. Matches published version
Nanomaterials for Gas Sorption and Separation
Creators: name: Simonato, Sara
Publisher: name: Karlsruhe
Year: 2013

description: In this study, we investigate the feasibility of using different nanoscaled materials as sorption substrate: to capture atmospheric carbon dioxide, to capture oxygen, to transfer doxorubicin, to separate (S)-Ibuprofen from (R)-Ibuprofen.
Residual Energy in Magnetohydrodynamic Turbulence
Creators: name: Wang, Yuxuan
name: Boldyrev, Stanislav
name: Perez, Jean Carlos
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: There is mounting evidence in solar wind observations and in numerical simulations that kinetic and magnetic energies are not in equipartition in magnetohydrodynamic turbulence. The origin of their mismatch, the residual energy E_r=E_v-E_b, is not well understood. In the present work this effect is studied analytically in the regime of weak magnetohydrodynamic turbulence. We find that residual energy is spontaneously generated by turbulent dynamics, and it has a negative sign, in good agreement with the observations. We obtain that the residual energy condenses around k_||=0 with its k_||-spectrum broadening linearly with k_perp, where k_|| and k_perp are the wavenumbers parallel and perpendicular to the background magnetic field, and the field-perpendicular spectrum of the residual energy has the scaling E_r(k_perp)\propto k_perp^{-1} in the inertial interval. These results are found to be in agreement with numerical simulations. We propose that residual energy plays a fundamental role in Alfvenic turbulence and it should be taken into account for correct interpretation of observational and numerical data.
description: To match the version accepted to Astrophys. J. Letters; KITP Preprint
Tetrad gravity, electroweak geometry and conformal symmetry
Creators: name: Canarutto, Daniel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 81R25, 81R40, 81Q99

description: A partly original description of gauge fields and electroweak geometry is proposed. A discussion of the breaking of conformal symmetry and the nature of the dilaton in the proposed setting indicates that such questions cannot be definitely answered in the context of electroweak geometry.
description: 21 pages - accepted by International Journal of Geometric Methods in Modern Physics - v2: some minor changes, mostly corrections of misprints
First-order quantum correction to the Larmor radiation from a moving charge in a spatially homogeneous time-dependent electric field
Creators: name: Yamamoto, Kazuhiro
name: Nakamura, Gen
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: First-order quantum correction to the Larmor radiation is investigated on the basis of the scalar QED on a homogeneous background of time-dependent electric field, which is a generalization of a recent work by Higuchi and Walker so as to be extended for an accelerated charged particle in a relativistic motion. We obtain a simple approximate formula for the quantum correction in the limit of the relativistic motion when the direction of the particle motion is parallel to that of the electric field.
description: 12 pages, 2 figures, accepted for publication in Physical Review D
Genomic selection in White Spruce
Creators: name: Ibrahim, Omnia Gamal El-Dien
Publisher: name: University of British Columbia
Year: 2017

description: Tree improvement programs are long-term and resource-demanding endeavors consisting of repeated cycles of breeding, testing, and selection and suffer from protracted testing phases. Phenotypic selection is commonly practiced and often requires trees reaching certain age and/or size resulting in slow accumulation of genetic gain. Open-pollinated (OP) family testing is the simplest and most economical means for screening, evaluating, and ranking large number of candidate parent trees but suffers from inflated additive genetic variance and heritability estimates. This dissertation investigates genomic selection (GS) and its applicability to forestry in selection and progeny testing evaluation. To address these two applications, I studied yield and wood traits from two white spruce populations, genotyped using Genotyping-by-Sequencing and SNPs array. I investigated the applicability of GS using the Ridge Regression Best Linear Unbiased Predictor (RR-BLUP) and the Generalized Ridge Regression (GRR)) algorithms and validated the derived predictive models in space across three progeny testing sites in interior British Columbia. Moreover, using principal component analysis (PCA), I fitted a multi-traits GS predictive model to address the inter-correlation among the studied attributes. Additionally, the Genomic Best Linear Unbiased Predictor (GBLUP) was used in genetic variance decomposition framework to unravel additive from non-additive genetic variances and I compared the results to that from the traditional pedigree-based (ABLUP) analysis. Differences between the RR-BLUP and GRR predictive models’ accuracies were observed indicating that the studied attributes’ genetic architecture is complex. Validating the GS’s predictive models in space clearly confirmed multi- to single-site superiority as they account for the genotype x environment interaction, commonly observed in forestry evaluation trials. When PCA scores used as multi-trait representatives, GS prediction models produced surprising results where the concurrent selection of negatively correlated traits such as wood density and growth is possible. The genetic variance decomposition indicated that the genomic-based approach outperformed that of the pedigree-based with the successfully separation of additive from non-additive genetic effects. This approach was demonstrated in a single- and extended to multi-site scenario, propelling OP testing to the forefront of forest trees genetic evaluation. In general, the effectiveness of GS was clearly demonstrated as an alternative selection and evaluation method.
Lessons learned and good practices for setting up HEI local talent management centres
Creators: name: Alves, Helena
Publisher: name: DocTalent4EU Consortium
Year: 2025
Subjects: Doctoral talent
Career development
Higher education

description: This report captures the key insights, lessons learned, and good practices emerging from the pilot implementation of Talent Management Centres (TMCs) within the DocTalent4EU project. Designed to support universities interested in establishing their own TMCs, the document offers practical guidance based on real experiences from partner institutions. It highlights how TMCs can help PhD candidates and early career researchers develop and showcase in-demand transferable skills, boosting their career prospects beyond academia. 

DocTalent4EU is a HORIZON EUROPE funded project which aims to enhance PhD employability through a strong, visible and innovative recognition-system of the most in-demand transferable skills that early-career researchers acquire or will acquire through their doctoral training and research activities.
Direct and Indirect Singlet Scalar Dark Matter Detection in the Lepton-Specific two-Higgs-doublet Model
Creators: name: Boucenna, M. S.
name: Profumo, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A recent study of gamma-ray data from the Galactic Center motivates the investigation of light (~7-10 GeV) particle dark matter models featuring tau lepton pairs as dominant annihilation final state. The Lepton-Specific two-Higgs-doublet Model (2HDM-L) provides a natural framework where light, singlet scalar dark matter can pair-annihilate dominantly into tau leptons. We calculate the nucleon-dark matter cross section for singlet scalar dark matter within the 2HDM-L framework, and compare with recent results from direct detection experiments. We study how direct dark matter searches can be used to constrain the dark matter interpretation of gamma ray observations, for different dominant annihilation final states. We show that models exist with the correct thermal relic abundance that could fit the claimed gamma-ray excess from the Galactic Center region and have direct detection cross sections of the order of what needed to interpret recent anomalous events reported by direct detection experiments.
description: 16 pages, 3 figures; v2: references and comments added, figures re-styled, to appear on PRD
Supplementary figures, supplementary data analysis and hypothesis table from How much calcium to shell out? Eggshell calcium carbonate content is greater in birds with thinner shells, larger clutches and longer lifespans
Creators: name: McClelland, Stephanie C.
name: Cassey, Phillip
name: Maurer, Golo
name: Hauber, Mark E.
name: Portugal, Steven J.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 90301 Biomaterials
subject: FOS: Medical engineering

description: The avian eggshell is a bio-ceramic structure that protects the embryo. It is composed almost entirely of calcium carbonate and a small organic component. An optimal amount of calcium carbonate in the eggshell is essential for the embryo's development, yet how the ratio of calcium carbonate to organic matter varies between species has not been investigated. Calcium is a limiting resource for most birds, so its investment in their eggs should be optimized for a bird's life history. We measured the relative calcium carbonate content of eggshells in 222 bird species and tested hypotheses for how this trait has evolved with these specie's life-history strategies and other traits of their respective egg physiologies. We found that (i) eggshell calcium carbonate content was positively correlated with species' having thinner eggshells, and smaller than expected eggs relative to incubating parental mass, (ii) species with small mean clutch sizes had lower calcium carbonate content in their eggshells and (iii) for species with larger clutch sizes, eggshell calcium carbonate content was negatively correlated with their mean lifespan. The pattern of lower eggshell calcium carbonate in longer lived, larger clutched birds suggests that calcium provision to the eggshell has long-term costs for the individual.
An Agent-Based Model of Collective Emotions in Online Communities
Creators: name: Schweitzer, Frank
name: Garcia, David
Publisher: name: arXiv
Year: 2010
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Multiagent Systems (cs.MA)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We develop a agent-based framework to model the emergence of collective emotions, which is applied to online communities. Agents individual emotions are described by their valence and arousal. Using the concept of Brownian agents, these variables change according to a stochastic dynamics, which also considers the feedback from online communication. Agents generate emotional information, which is stored and distributed in a field modeling the online medium. This field affects the emotional states of agents in a non-linear manner. We derive conditions for the emergence of collective emotions, observable in a bimodal valence distribution. Dependent on a saturated or a superlinear feedback between the information field and the agent's arousal, we further identify scenarios where collective emotions only appear once or in a repeated manner. The analytical results are illustrated by agent-based computer simulations. Our framework provides testable hypotheses about the emergence of collective emotions, which can be verified by data from online communities.
description: European Physical Journal B (in press), version 2 with extended introduction, clarifications
Robustness of a perturbed topological phase
Creators: name: Dusuel, S.
name: Kamfor, M.
name: Orus, R.
name: Schmidt, K. P.
name: Vidal, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the stability of the topological phase of the toric code model in the presence of a uniform magnetic field by means of variational and high-order series expansion approaches. We find that when this perturbation is strong enough, the system undergoes a topological phase transition whose first- or second-order nature depends on the field orientation. When this transition is of second order, it is in the Ising universality class except for a special line on which the critical exponent driving the closure of the gap varies continuously, unveiling a new topological universality class.
description: 5 pages, 3 figures, published version
D 3.6 Nanocomposite hydrogels prototypes
Creators: name: Vannozzi, Lorenzo
name: Trucco, Diego
name: Ricotti, Leonardo
Publisher: name: Zenodo
Year: 2022

description: In this Deliverable, the final results obtained on the development and characterization of the nanocomposite hydrogel formulations are described in the framework of WP3. 
These results concern nanocomposite hydrogel formulations based on VitroGel-RGD® and methacrylated gellan gum, explored by SSSA and IOR. These hydrogels have been doped with piezoelectric (i.e., barium titanate nanoparticles) and carbon-based nanomaterials (i.e., graphene oxide and reduced graphene oxide), developed by PLASMACHEM and BIU, respectively. 
This Deliverable describes the results obtained on nanocomposite rheometry, printability, piezoelectricity, adhesion on ex vivo cartilage tissues and mechanical and lubricant characterizations. 
Rheometric measurements were performed to evaluate the shear thinning properties and to estimate possible harmful effects on cells due to shear stresses. Then, the printability was analyzed by setting the printing pressure and analyzing the shape of a printed area with respect to the expected one. Lately, injectability has been investigated to assure the optimal needle size for the material injection. The adhesion strength of hydrogels polymerized onto ex vivo cartilage tissues was evaluated, as well as the hydrogel stability when injected on sloped surfaces, highlighting the need to consider this aspect, which will help the surgeon operating successfully. Moreover, a discussion about the piezoelectric activity of the nanocomposite hydrogels was reported, in sight of the recent biological results derived from the TEM investigation. A mechanical and lubricant characterization was performed to understand how the nanofillers change the compressive modulus and the coefficient of friction of the nanocomposite hydrogels with respect to the controls. Finally, the degradation behaviour of the nanocomposite hydrogels was analyzed.
These tests have been performed in parallel to the biological evaluation of such nanocomposite constructs, reported in D6.4 and D6.5. Together, these results allowed evaluating the properties of the nanocomposite hydrogels, relevant for the final ADMAIORA application.
Spin Polarization in $γd \to \vec{n}p$ at Low Energies with a Pionless Effective Field Theory
Creators: name: Ando, S. -I.
name: Song, Y. -H.
name: Hyun, C. H.
name: Kubodera, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: With the use of pionless effective field theory including dibaryon fields, we study the $γd \to \vec{n} p$ reaction for the laboratory photon energy $E_γ^{lab}$ ranging from threshold to 30 MeV. Our main goal is to calculate the neutron polarization $P_{y'}$ defined as $P_{y'} = (σ_+ - σ_-)/(σ_+ + σ_-)$, where $σ_+$ and $σ_-$ are the differential cross sections for the spin-up and spin-down neutrons, respectively, along the axis perpendicular to the reaction plane. We also calculate the total cross section as well as the differential cross section $σ(θ)$, where $θ$ is the colatitude angle. Although the results for the total and differential cross sections are found to agree reasonably well with the data, the results for $P_{y'}$ show significant discrepancy with the experiment. We comment on this discrepancy.
description: 15 pages, 7 figures, discussion about di-baryon formalism detailed, minor corrections, accepted for publication in Phys. Rev. C
Forced turbulence in thermally bistable gas: A parameter study
Creators: name: Seifried, D.
name: Schmidt, W.
name: Niemeyer, J. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context: The thermal instability is one of the dynamical agents for turbulence in the diffuse interstellar medium, where both, turbulence and thermal instability interact in a highly non-linear manner. Aims: We study basic properties of turbulence in thermally bistable gas for variable simulation parameters. The resulting cold gas fractions can be applied as parameterisation in simulations on galactic scales. Methods: Turbulent flow is induced on large scales by means of compressive stochastic forcing in a periodic box. The compressible Euler equations with constant UV heating and a parameterised cooling function are solved on uniform grids. We investigate several values of the mean density of the gas and different magnitudes of the forcing. For comparison with other numerical studies, solenoidal forcing is applied as well. Results: After a transient phase, we observe that a state of statistically stationary turbulence is approached. Compressive forcing generally produces a two-phase medium, with a decreasing fraction of cold gas for increasing forcing strength. This behaviour can be explained on the basis of turbulent mixing. We also find indications for power-law tails of probability density functions of the gas density. Solenoidal forcing, on the other hand, appears to prevent the evolution into a two-phase-medium for certain parameter regions. Conclusions: The dynamics of thermally bistable turbulence shows a substantial sensitivity on the initial state and the forcing properties.
description: 13 pages, 12 figures, accepted for publication in Astronomy and Astrophysics, updated to final version
A dual formulation of supergravity-matter theories
Creators: name: Butter, Daniel
name: Kuzenko, Sergei M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Generating supersymmetric AdS solutions in non-minimal supergravity in four dimensions is notoriously difficult. Indeed, it is a longstanding lore that such solutions exist only for old minimal supergravity. In this paper, we construct a dual formulation for general N=1 supergravity-matter systems that avoids the problem. In the case of pure supergravity without a cosmological constant, it coincides with the usual non-minimal (n=-1) supergravity, but in the presence of matter (or a cosmological constant) our formulation differs considerably. We also elaborate upon the framework of conformal superspace and the compensator method as applied to our theory. In particular, we show that one can encode the details of the Kahler potential and superpotential entirely within the geometry of superspace so that the general sigma-model action is encoded in a single compact term: the supervolume. Finally, we discuss the issue of supercurrents and propose a general form for the supercurrent in AdS.
description: 35 pages; v3: typos corrected, version to appear in NPB
Exclusion limits from data of directional Dark Matter detectors
Creators: name: Billard, J.
name: Mayet, F.
name: Santos, D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Directional detection is a promising search strategy to discover galactic Dark Matter. Taking advantage on the rotation of the Solar system around the Galactic center through the Dark Matter halo, it allows to show a direction dependence of WIMP events. Even though the goal of directional search is to identify a WIMP positive detection, exclusion limits are still needed for very low exposure with a rather large background contamination, such as the one obtained with prototype experiments. Data of directional detectors are composed of energy and 3D track of recoiling nuclei. However, to set robust exclusion limits, we focus on the angular part of the event distribution, arguing that the energy part of the WIMP distribution is featureless and may even be mimic by the background one. Then, as the angular distributions of both background and WIMP events are known, a Bayesian approach to set exclusion limits is possible. In this paper, a statistical method based on an extended likelihood is proposed, compared to existing ones and is shown to be optimal. Eventually, a comprehensive study of the effect of detector configuration on exclusion limits is presented. It includes the effect of having or not sense recognition, a finite angular resolution, taking into account energy threshold as well as some astrophysical uncertainties.
description: 12 pages, 11 figures, final version, to appear in Phys. Rev. D (2010)
Type Ia supernova diversity: white dwarf central density as a secondary parameter in three-dimensional delayed detonation models
Creators: name: Seitenzahl, I. R.
name: Ciaraldi-Schoolmann, F.
name: Roepke, F. K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Delayed detonations of Chandrasekhar-mass white dwarfs (WDs) have been very successful in explaining the spectra, light curves, and the width-luminosity relation of spectroscopically normal Type Ia supernovae (SNe Ia). The ignition of the thermonuclear deflagration flame at the end of the convective carbon "simmering" phase in the core of the WD is still not well understood and much about the ignition kernel distribution remains unknown. Furthermore, the central density at the time of ignition depends on the still uncertain screened carbon fusion reaction rates, the accretion history and cooling time of the progenitor, and the composition. We present the results of twelve high-resolution three-dimensional delayed detonation SN Ia explosion simulations that employ a new criterion to trigger the deflagration to detonation transition (DDT). All simulations trigger our DDT criterion and the resulting delayed detonations unbind the star. We find a trend of increasing iron group element (IGE) production with increasing central density for bright, faint, and intermediate SNe. The total 56Ni yield, however, remains more or less constant, even though increased electron captures at high density result in a decreasing 56Ni mass fraction of the IGE material. We attribute this to an approximate balance of 56Ni producing and destroying effects. The deflagrations that were ignited at higher density initially have a faster growth rate of subgrid-scale turbulence. Hence, the effective flame speed increases faster, which triggers the DDT criterion earlier, at a time when the central density of the expanded star is higher. This leads to an overall increase of IGE production, which off-sets the percental reduction of 56Ni due to neutronization.
description: 8 pages, 6 figures, 2 tables, accepted for publication in MNRAS. v2 now includes correct Fig. 6, which was missing from v1
Integrated Polarization of Sources at lambda ~1m and New Rotation Measure Ambiguities
Creators: name: Farnsworth, Damon
name: Rudnick, Lawrence
name: Brown, Shea
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present an analysis of the polarization of compact radio sources from six pointings of the Westerbork Synthesis Radio Telescope (WSRT) at 350 MHz with 35% coverage in lambda^2. After correcting for the off-axis instrumental polarization with a simple analytical model, only a small number of 585 strong sources have significant polarizations at these wavelengths. The median depolarization ratio from 1.4 GHz for the strongest sources is <0.2, reinforcing the likelihood that radio galaxies are found in magnetized environments, even outside of rich clusters. Seven sources with significant 350 MHz polarization were selected for a more in-depth Faraday structure analysis. We fit the observed values Q/I and U/I as a function of lambda^2 using both a depolarizing screen and two component models. We also performed RM Synthesis/Clean and standard fitting of polarization angle vs. lambda^2. We find that a single rotation measure (RM), as found using polarization angle fitting or simple screen models, commonly provides a poor fit when the solutions are translated back into Q, U space. Thus, although a single "characteristic" rotation measure may be found using these techniques, the Faraday structure of the source may not be adequately represented. We also demonstrate that RM Synthesis may yield an erroneous Faraday structure in the presence of multiple, interfering RM components, even when cleaning of the Faraday spectrum is performed. We briefly explore the conditions under which rotation measures and Faraday structure results can be reliable. Many measurements in the literature do not meet these criteria; we discuss how these influence the resulting scientific conclusions and offer a prescription for obtaining reliable RMs.
description: 26 pages, 24 figures. Published in The Astronomical Journal
Forward-backward asymmetry of top quark in unparticle physics
Creators: name: Chen, Chuan-Hung
name: Cvetic, G.
name: Kim, C. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The updated CDF measurement of the forward-backward asymmetry (FBA) in the top quark production p{bar p} -> t{bar t} at Tevatron (with the CMS energy 1.96 TeV) shows a deviation of 2*sigma from the value predicted by the Standard QCD Model. We present calculation of this quantity in the scenario where colored unparticle physics contributes to the s-channel of the process, and obtain the regions in the plane of the unparticle parameters lambda and dU which give the values of the FBA and of the total t{bar t} production cross section compatible with the present measurements.
description: 15 pages, 5 figures; various typos corrected, fig.3 has higher resolution, Ref.[16](2nd entry) is new; version to appear in Phys.Lett.B
Muon to electron conversion in the Littlest Higgs model with T-parity
Creators: name: del Aguila, F.
name: Illana, J. I.
name: Jenkins, M. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Little Higgs models provide a natural explanation of the little hierarchy between the electroweak scale and a few TeV scale, where new physics is expected. Under the same inspiring naturalness arguments, this work completes a previous study on lepton flavor-changing processes in the Littlest Higgs model with T-parity exploring the channel that will eventually turn out to be the most sensitive, μ-e conversion in nuclei. All one-loop contributions are carefully taken into account, results for the most relevant nuclei are provided and a discussion of the influence of the quark mixing is included. The results for the Ti nucleus are in good agreement with earlier work by Blanke et al., where a degenerate mirror quark sector was assumed. The conclusion is that, although this particular model reduces the tension with electroweak precision tests, if the restrictions on the parameter space derived from lepton flavor violation are taken seriously, the degree of fine tuning necessary to meet these constraints also disfavors this model.
description: 26 pages, 7 figures, 4 tables; discussion improved, results unchanged, one reference added, version to appear in JHEP
Dilaton cosmology and the Modified Uncertainty Principle
Creators: name: Majumder, Barun
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Very recently Ali et al.(2009) proposed a new generalized uncertainty principle (or GUP) with a linear term in Plank length which is consistent with doubly special relativity and string theory. The classical and quantum effects of this generalized uncertainty principle (term as modified uncertainty principle or MUP) are investigated on the phase space of a dilatonic cosmological model with an exponential dilaton potential in a flat FRW background . Interestingly, as a consequence of MUP, we found that it is possible to get a late time acceleration for this model. For the quantum mechanical description in both commutative and MUP framework, we found the analytical solutions of the Wheeler-DeWitt equation for the early universe and compare our results. We have used an approximation method in the case of MUP.
description: 11 pages, 6 figures, accepted for publication in Phys. Rev. D
The impact of supernovae driven winds on stream-fed protogalaxies
Creators: name: Powell, Leila C.
name: Slyz, Adrianne
name: Devriendt, Julien
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: SNe driven winds are widely thought to be very influential in the high-redshift Universe, shaping the properties of the circum-galactic medium, enriching the IGM with metals and driving the evolution of low-mass galaxies. However, it is not yet fully understood how SNe driven winds interact with their surroundings in a cosmological context, nor is it clear whether they are able to significantly impact the evolution of low-mass galaxies from which they originate by altering the amount of cold material these accrete from the cosmic web. We implement a standard Taylor-Sedov type solution, widely used in the community to depict the combined action of many SN explosions, in a cosmological resimulation of a low mass galaxy at z =9 from the 'Nut' suite. However, in contrast with previous work, we achieve a resolution high enough to capture individual SN remnants in the Taylor-Sedov phase, for which the solution provides an accurate description of the expansion. We report the development of a high-velocity, far-reaching galactic wind produced by the combined action of SNe in the main galaxy and its satellites, which are located in the same or a neighbouring dark matter halo. Despite this, we find that (i) this wind carries out very little mass (the measured outflow is of the order of a tenth of the inflow/star formation rate) and (ii) the cold gas inflow rate remains essentially unchanged from the run without SNe feedback. Moreover, there are epochs during which star formation is enhanced in the feedback run relative to its radiative cooling only counterpart. We attribute this 'positive' feedback to the metal enrichment that is present only in the former. We conclude that at very high redshift, efficient SNe feedback can drive large-scale galactic winds but does not prevent massive cold gas inflow from fuelling galaxies, resulting in long-lived episodes of intense star formation.(abridged)
description: Accepted for publication in MNRAS. 21 pages, 14 figures, 1 table. Some clarifications/changes to presentation following referee report, results and conclusions unchanged. This version contains low resolution figures, see journal for high resolution version
Oxidation of soot on iron oxide catalysts
Creators: name: Waglöhner, Steffen
Publisher: name: Karlsruhe
Year: 2012
Subjects: mechanism
soot
oxidation
iron
oxide

description: This thesis addresses the rational development of an iron oxide based catalyst for soot oxidation. The approach of this development process comprises three research methods, namely mechanistic and kinetic experiments, kinetic and fluid dynamic modelling and structure-activity relations of different types of iron oxides. A combination of this enables the synthesis of an advanced catalytic material, which is transferred to a real DPF system and tested under real diesel exhaust conditions.
Quantitative phase-field model for phase transformations in multi-component alloys
Creators: name: Choudhury, Abhik Narayan
Publisher: name: Karlsruhe
Year: 2012
Subjects: Phase-field
Grand-potential
eutectic
peritectic
solidification

description: A quantitative phase-field model, based on a grand potential functional is derived for the case of multi-component alloys along with the thin-interface asymptotics. In addition, a framework is developed, which allows the coupling of the thermodynamic databases to the phase-field model through the construction of simplistic free energies.
Cytogenetic Analysis of the Variable Squirrel (Callosciurus finlaysonii Horsfield, 1824) by Conventional Staining, Ag-NOR Staining and Fluorescence in situ Hybridization Techniques
Creators: name: Sucheela Talumphai
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Year: 2021
Subjects: Callosciurus finlaysonii
Karyotype
Ideogram
NOR-banding
FISH

description: Journal of Applied Research on Science and Technology, 20, 2, 25-35
Effective unidirectional pumping for steady-state amplification without inversion
Creators: name: Jha, Pankaj K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss an opportunity to achieve amplification without inversion in three-level cascade scheme using an effective unidirectional pumping via bidirectional incoherent pump. Analytical solution to the population and the coherence are obtained in the steady-state regime. With a proper choice of the parameters, obtained here, the possibility for amplification without inversion is presented.
description: 8 Pages, 7 figures
การพัฒนาเทคนิคค้นหาพื้นที่ใบหน้าและวัตถุบริเวณดวงตาโดยใช้หลักการประมวลผลภาพ
Creators: name: เอกรัตน์ สุขสุคนธ์
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Year: 2021
Subjects: การประมวลผลสัญญาณภาพ
การค้นหาพื้นที่ใบหน้า
การค้นหาวัตถุ

description: Journal of Applied Research on Science and Technology, 20, 2, 36-46
Build-up Factors and Fast Neutron Properties of Some Plastic and Polymer for Shielding Materials: A Simulation
Creators: name: Sunantasak Ravangvong
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Year: 2021
Subjects: buildup factors
fast neutron
plastic
polymer

description: Journal of Applied Research on Science and Technology, 20, 2, 47-56
Continuous thermal melting of a two-dimensional Abrikosov vortex solid
Creators: name: Iaconis, J.
name: Melko, R. G.
name: Burkov, A. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We examine the question of thermal melting of the triangular Abrikosov vortex solid in two-dimensional superconductors or neutral superfluids. We introduce a model, which combines lowest Landau level (LLL) projection with the magnetic Wannier basis to represent degenerate eigenstates in the LLL. Solving the model numerically via large-scale Monte Carlo simulations, we find clear evidence for a continuous melting transition, in perfect agreement with the Kosterlitz-Thouless-Halperin-Nelson-Young theory and with recent experiments.
description: 4 pages, 2 figures; published version