cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum Error Correction via Noise Guessing Decoding
Creators: name: Cruz, Diogo
name: Monteiro, Francisco A.
name: Coutinho, Bruno C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum error correction codes (QECCs) play a central role in both quantum communications and quantum computation. Practical quantum error correction codes, such as stabilizer codes, are generally structured to suit a specific use, and present rigid code lengths and code rates. This paper shows that it is possible to both construct and decode QECCs that can attain the maximum performance of the finite blocklength regime, for any chosen code length when the code rate is sufficiently high. A recently proposed strategy for decoding classical codes called GRAND (guessing random additive noise decoding) opened doors to efficiently decode classical random linear codes (RLCs) performing near the maximum rate of the finite blocklength regime. By using noise statistics, GRAND is a noise-centric efficient universal decoder for classical codes, provided that a simple code membership test exists. These conditions are particularly suitable for quantum systems, and therefore the paper extends these concepts to quantum random linear codes (QRLCs), which were known to be possible to construct but whose decoding was not yet feasible. By combining QRLCs and a newly proposed quantum-GRAND, this work shows that it is possible to decode QECCs that are easy to adapt to changing conditions. The paper starts by assessing the minimum number of gates in the coding circuit needed to reach the QRLCs' asymptotic performance, and subsequently proposes a quantum-GRAND algorithm that makes use of quantum noise statistics, not only to build an adaptive code membership test, but also to efficiently implement syndrome decoding.
Strange quark matter in the presence of explicit symmetry breaking interactions
Creators: name: Moreira, J.
name: Morais, J.
name: Hiller, B.
name: Osipov, A. A.
name: Blin, A. H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is shown that a first order transition associated with a jump in the strange quark mass appears in a generalized 3 flavour Nambu--Jona-Lasinio (NJL) treatment of quark matter. The generalization of the Lagrangian displays the complete set of spin 0 interactions at leading and subleading orders (LO and NLO) in $\frac{1}{N_c}$counting, including the recently derived NLO explicit chiral symmetry breaking interactions which are of the same order as the 't Hooft flavour determinant. The parameters of the model are tightly constrained by the low energy characteristics in both the pseudoscalar and scalar meson sectors. The transition occurs in a moderate chemical potential region ($μ\simeq 400~\mathrm{MeV}$ for zero temperature) in addition to the usual chiral transition associated with the light quark sector. This feature has at its root the inclusion of the explicit chiral symmetry breaking interactions, which therefore can be seen to act as a catalyst in the production of strange quark matter when compared to the conventional version of the model that takes only into account the 't Hooft interaction in the NLO. It can be traced back to the effect of the interactions which do not violate the Okubo-Zweig-Iizuka rule (OZI), without which the empirical ordering of the scalars ($m_{K^\star}< m_{a_0}\approx m_{f_0}$) is not reproduced.
description: 12 pages, 4 figures (11 subfigures). Revised and extended version. Accepted for publication in Phys. Rev. D
The hot circumgalactic medium of the Milky-Way: new insights from XMM-Newton observations
Creators: name: Bhattacharyya, Joy
name: Das, Sanskriti
name: Gupta, Anjali
name: Mathur, Smita
name: Krongold, Yair
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present XMM-Newton observations around the sightline of Mrk 421. The emission spectrum of the Milky Way circumgalactic medium (CGM) shows that a two phase model is a better fit to the data compared to a single phase model; in addition to the warm-hot virial phase at log ($T/$K) = $6.33_{-0.02}^{+0.03}$, a hot super-virial phase at log ($T/$K) = $6.88_{-0.07}^{+0.08}$ is required. Furthermore, we present observations of five fields within 5 degrees of the primary field. Their spectra also require a two-phase model at warm-hot and hot temperatures. The hot phase, first discovered in Das et al. 2019, appears to be widespread. By chemical tagging we show that emission from the supevirial phase comes from the L-shell transitions of Fe XVIII-FeXXII, and that the range of temperatures probed in emission is distinct from that in absorption. We detect scatter in temperature and emission measure (EM) in both the phases, and deduce that there is small-scale density inhomogeneity in the MW CGM. The emitting gas likely has higher density, possibly from regions close to the disk of the MW, while the absorption in the virial phase may arise from low-density gas extended out to the virial radius of the MW. The presence of the super-virial phase far from the regions around the Galactic center implicates physical processes unrelated to the activity at the Galactic center. Hot outflows resulting from star-formation activity throughout the Galactic disk are likely responsible for producing this phase.
description: 18 pages, 10 figures, 4 tables, submitted to the ApJ
CMB power spectrum of Nambu-Goto cosmic strings
Creators: name: Lazanu, Andrei
name: Shellard, E. P. S.
name: Landriau, Martin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We improve predictions of the cosmic microwave background (CMB) power spectrum induced by cosmic strings by using source terms obtained from Nambu-Goto network simulations in an expanding universe. We use three high-resolution cosmic string simulations that cover the entire period from recombination until late-time $Λ$ domination to calculate unequal time correlators (UETCs) for scalar, vector and tensor components of the cosmic-string energy-momentum tensor. We calculate the CMB angular power spectrum from strings in two ways. First, to aid comparison with previous work, we fit our simulated UETCs to those obtained from different parameter combinations from the unconnected segment model and then calculate the CMB power spectra using these parameters to represent the string network. Second and more accurately, we decompose the UETCs into their corresponding eigenvalues and eigenvectors and input them directly into an Einstein-Boltzmann solver to calculate the power spectrum for each of the three simulation time periods. We combine the three simulations together, using each of them in its relevant redshift range and we obtain overall power spectra in temperature and polarisation channels. Finally, we use the power spectra obtained with the latest Planck and BICEP2 likelihoods to obtain constraints on the cosmic string tension.
description: Published version
Strain Engineering for Thermal Conductivity of SWCNT Forests
Creators: name: Jiang, Jin-Wu
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We perform classical molecular dynamics simulations to investigate the mechanical compression effect on the thermal conductivity of the single-walled carbon nanotube (SWCNT) forest, in which SWCNTs are closely aligned and parallel with each other. We find that the thermal conductivity can be linearly enhanced by increasing compression before the buckling of SWCNT forests, but the thermal conductivity decreases quickly with further increasing compression after the forest is buckled. Our phonon mode analysis reveals that, before buckling, the smoothness of the inter-tube interface is maintained during compression, and the inter-tube van der Waals interaction is strengthened by the compression. Consequently, the twisting-like mode (good heat carrier) is well preserved and its group velocity is increased by increasing compression, resulting in the enhancement of the thermal conductivity. The buckling phenomenon changes the circular cross section of the SWCNT into ellipse, which causes effective roughness at the inter-tube interface for the twisting motion. As a result, in ellipse SWCNTs, the radial breathing mode (poor heat carrier) becomes the most favorable motion instead of the twisting-like mode, leading to the quick decrease of the thermal conductivity with further increasing compression after buckling.
description: Carbon, published
Probing local emission properties in InGaN/GaN quantum wells by scanning tunneling luminescence microscopy
Creators: name: Sauty, Mylène
name: Alyabyeva, Natalia
name: Lynsky, Cheyenne
name: Chow, Yi Chao
name: Nakamura, Shuji
name: Speck, James S.
name: Lassailly, Yves
name: Rowe, Alistair C. H.
name: Weisbuch, Claude
name: Peretti, Jacques
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Scanning tunneling electroluminescence microscopy is performed on a 3-nm-thick InGaN/GaN quantum well with x = 0.23 such that the main light emission occurs in the green. The technique is used to map the local recombination properties at a scale of ~10 nm and to correlate them with the surface topography imaged by scanning tunneling microscopy. A 500 nm x 500 nm area around a 150-nm large and 2.5-nm deep hexagonal defect is probed, revealing emission at higher energies close to the defect edges, a feature which is not visible in the macro-photoluminescence spectrum of the sample. Via a fitting of the local tunneling electroluminescence spectra, quantitative information on the fluctuations of the intensity, energy, width and phonon replica intensity of the different spectral contributions are obtained, revealing information about carrier localization in the quantum well. This procedure also indicates that carrier diffusion length on the probed part of the quantum well is approximately 40 nm.
Insights into Nano-Scale Physical and Mechanical Properties of Epoxy/Boehmite Nanocomposite Using Different AFM Modes
Creators: name: Ghasem Zadeh Khorasani, Media
name: Silbernagl, Dorothee
name: Platz, Daniel
name: Sturm, Heinz
Publisher: name: Technische Universität Berlin
Year: 2019
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: nanomechanical properties
subject: boehmite
subject: epoxy nanocomposites
subject: atomic force microscopy
subject: intermodulation
subject: interphase

description: Understanding the interaction between nanoparticles and the matrix and the properties of interphase is crucial to predict the macroscopic properties of a nanocomposite system. Here, we investigate the interaction between boehmite nanoparticles (BNPs) and epoxy using different atomic force microscopy (AFM) approaches. We demonstrate benefits of using multifrequency intermodulation AFM (ImAFM) to obtain information about conservative, dissipative and van der Waals tip-surface forces and probing local properties of nanoparticles, matrix and the interphase. We utilize scanning kelvin probe microscopy (SKPM) to probe surface potential as a tool to visualize material contrast with a physical parameter, which is independent from the mechanics of the surface. Combining the information from ImAFM stiffness and SKPM surface potential results in a precise characterization of interfacial region, demonstrating that the interphase is softer than epoxy and boehmite nanoparticles. Further, we investigated the effect of boehmite nanoparticles on the bulk properties of epoxy matrix. ImAFM stiffness maps revealed the significant stiffening effect of boehmite nanoparticles on anhydride-cured epoxy matrix. The energy dissipation of epoxy matrix locally measured by ImAFM shows a considerable increase compared to that of neat epoxy. These measurements suggest a substantial alteration of epoxy structure induced by the presence of boehmite.
P-type doping of elemental bismuth with indium, gallium and tin: a novel doping mechanism in solids
Creators: name: Jin, Hyungyu
name: Wiendlocha, Bartlomiej
name: Heremans, Joseph P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A new doping mechanism is described, whereby a doping impurity does not simply transfer charge to the bands of a host semiconductor or semimetal, but rearranges the core energy levels deep in the valence band of the host. This, in turn, leads to a redistribution of all electrons in the host, and, if designed properly, changes the location of the Fermi level EF and the density of conducting charge carriers near EF. The principle is proven experimentally in elemental Bi, whereby group III elements In and Ga dope Bi p-type, in spite of the fact that all three atoms are trivalent in the solid state. Electronic structure calculations show the formation of a hyperdeep defect state (HDS) and its effect on the EF in Bi doped with In (Bi:In) and Ga (Bi:Ga). The HDS at -5 to -6 eV below the EF of elemental Bi hybridizes with the Bi 6p electrons, and deprives the Bi valence band of two electrons per impurity atom. This then perturbs the electron count in the solid and lowers the EF. The charge on the impurity atoms is unchanged. In principle, this doping action does not result in the appearance of ionized impurities that scatter conduction electrons and holes in conventional doping. Experimentally, Shubnikov - de Haas and Hall Effect measurements show that adding In to Bi results in an increase in the density of holes. Thermoelectric, galvanomagnetic and thermomagnetic data are given for single-crystal and polycrystalline samples. In-doping leads to an enhancement of the thermoelectric figure of merit, which suggests that the new doping mechanism also gives a route to develop better thermoelectric materials. The same mechanism is at work for Sn-doped Bi (Bi:Sn), although here ionized impurity scattering is not avoided.
description: ver. 3, much extended and rewritten, supplement included
Consistent massive graviton on arbitrary backgrounds
Creators: name: Bernard, Laura
name: Deffayet, Cedric
name: von Strauss, Mikael
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We obtain the fully covariant linearized field equations for the metric perturbation in the de Rham-Gabadadze-Tolley (dRGT) ghost free massive gravities. For a subset of these theories, we show that the non dynamical metric that appears in the dRGT setup can be completely eliminated leading to the theory of a massive graviton moving in a single metric. This has a mass term which contains non trivial contributions of the space-time curvature. We show further how 5 covariant constraints can be obtained including one which leads to the tracelessness of the graviton on flat space-time and removes the Boulware-Deser ghost. The 5 constraints are obtained for a background metric which is arbitrary, i.e. which does not have to obey the background field equations.
description: Latex, 5 pages. Matches published version
Most 1.6 Earth-Radius Planets are not Rocky
Creators: name: Rogers, Leslie A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Kepler Mission, combined with ground based radial velocity (RV) follow-up and dynamical analyses of transit timing variations, has revolutionized the observational constraints on sub-Neptune-size planet compositions. The results of an extensive Kepler follow-up program including multiple Doppler measurements for 22 planet-hosting stars more than doubles the population of sub-Neptune-sized transiting planets that have RV mass constraints. This unprecedentedly large and homogeneous sample of planets with both mass and radius constraints opens the possibility of a statistical study of the underlying population of planet compositions. We focus on the intriguing transition between rocky exoplanets (comprised of iron and silicates) and planets with voluminous layers of volatiles (H/He and astrophysical ices). Applying a hierarchical Bayesian statistical approach to the sample of Kepler transiting sub-Neptune planets with Keck RV follow-up, we constrain the fraction of close-in planets (with orbital periods less than ~50 days) that are sufficiently dense to be rocky, as a function of planet radius. We show that the majority of 1.6 Earth-radius planets are too low density to be comprised of Fe and silicates alone. At larger radii, the constraints on the fraction of rocky planets are even more stringent. These insights into the size demographics of rocky and volatile-rich planets offer empirical constraints to planet formation theories, and guide the range of planet radii to be considered in studies of the occurrence rate of "Earth-like" planets, $η_{Earth}$.
description: Accepted to ApJ, In press
Nanoscale mapping of sub-gap electroluminescence from step-bunched, oxidized 4H-SiC surfaces
Creators: name: Alyabyeva, Natalia
name: Ding, Jacques
name: Sauty, Mylène
name: Woerle, Judith
name: Jousseaume, Yann
name: Ferro, Gabriel
name: McCallum, Jeffrey C.
name: Peretti, Jacques
name: Johnson, Brett C.
name: Rowe, Alistair C. H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Scanning tunneling luminescence microscopy (STLM) along with scanning tunneling spectroscopy (STS) is applied to a step-bunched, oxidized 4H-SiC surface prepared on the silicon face of a commercial, n-type SiC wafer using a silicon melt process. The step-bunched surface consists of atomically smooth terraces parallel to the [0001] crystal planes, and rougher risers consisting of nanoscale steps formed by the termination of these planes. The rather striking topography of this surface is well resolved with large tip biases of the order of -8 V and set currents of magnitude less than 1 nA. Hysteresis in the STS spectra is preferentially observed on the risers suggesting that they contain a higher density of surface charge traps than the terraces where hysteresis is more frequently absent. Similarly, at 50 K intense sub-gap light emission centered around 2.4 eV is observed mainly on the risers albeit only with larger tunneling currents of magnitude equal to or greater than 10 nA. These results demonstrate that STLM holds great promise for the observation of impurities and defects responsible for sub-gap light emission with spatial resolutions approaching the length scale of the defects themselves.
description: 13 pages, 5 figures; work presented at the International Conference on the Physics of Semiconductors, Sydney, 2022
Analytical computation of the epidemic threshold on temporal networks
Creators: name: Valdano, Eugenio
name: Ferreri, Luca
name: Poletto, Chiara
name: Colizza, Vittoria
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The time variation of contacts in a networked system may fundamentally alter the properties of spreading processes and affect the condition for large-scale propagation, as encoded in the epidemic threshold. Despite the great interest in the problem for the physics, applied mathematics, computer science and epidemiology communities, a full theoretical understanding is still missing and currently limited to the cases where the time-scale separation holds between spreading and network dynamics or to specific temporal network models. We consider a Markov chain description of the Susceptible-Infectious-Susceptible process on an arbitrary temporal network. By adopting a multilayer perspective, we develop a general analytical derivation of the epidemic threshold in terms of the spectral radius of a matrix that encodes both network structure and disease dynamics. The accuracy of the approach is confirmed on a set of temporal models and empirical networks and against numerical results. In addition, we explore how the threshold changes when varying the overall time of observation of the temporal network, so as to provide insights on the optimal time window for data collection of empirical temporal networked systems. Our framework is both of fundamental and practical interest, as it offers novel understanding of the interplay between temporal networks and spreading dynamics.
description: 22 pages, 6 figures
A systematic study of spin-dependent recombination in GaAs$_{1-x}$N$_x$ as a function of nitrogen content
Creators: name: Ulibarri, A. C.
name: Kothari, R.
name: Garcia, A.
name: Harmand, J. C.
name: Park, S.
name: Cadiz, F.
name: Peretti, J.
name: Rowe, A. C. H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A systematic study of spin-dependent recombination (SDR) under steady-state optical pumping conditions in dilute nitride semiconductors as a function of nitrogen content is reported. The alloy content is determined by a fit of the photoluminescence (PL) intensity using a Roosbroeck-Shockley relation and verified by a study of the GaN-like LO$_2$ phonon peak in a Raman spectroscopy map. PL spectra taken from alloys of the form GaAs$_{1-x}$N$_x$ where $0.022 < x < 0.036$ exhibit PL intensity increases when switching from a linearly- to a circularly-polarized pump up to a factor of 5 for $x = 0.022$. This work used a 1.39 eV laser with a radius of 0.6 $μ$m. The observed SDR ratio monotonically decreases with increasing $x$, reaching 1.5 for $x = 0.036$. Moreover, the excitation power required to obtain maximum SDR systematically increases with increasing $x$, varying from 0.6 mW for $x = 0.022$ to 15 mW for $x = 0.036$. These observations are consistent with an increase in the density of electronically active defects with increasing nitrogen content, both those responsible for the SDR as well as other, standard Shockley-Read-Hall (SRH) centers.
description: 11 pages, 5 figures; work presented at the International Conference on the Physics of Semiconductors, Sydney, 2022
Bullseye dielectric cavities for photon collection from a surface-mounted quantum-light-emitter
Creators: name: Hekmati, Reza
name: Hadden, John P.
name: Mathew, Annie
name: Bishop, Samuel G.
name: Lynch, Stephen A.
name: Bennett, Anthony J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Coupling light from a point source to a propagating mode is an important problem in nano-photonics and is essential for many applications in quantum optics. Circular "bullseye" cavities, consisting of concentric rings of alternating refractive index, are a promising technology that can achieve near-unity coupling into a first lens. Here we design a bullseye structure suitable for enhancing the emission from dye molecules, 2D materials and nano-diamonds positioned on the surface of these cavities. A periodic design of cavity, meeting the Bragg scattering condition, achieves a Purcell factor of 22.5 and collection efficiency of 80 %. We also tackle the more challenging task of designing a cavity for coupling to a low numerical aperture fibre in the near field. Using an iterative procedure, we show that apodized (non-periodic) rings can achieve a collection efficiency that exceeds the periodic Bragg cavity.
description: 9 pages, 6 figures
Crafting networks to achieve, or not achieve, chaotic states
Creators: name: De Nigris, Sarah
name: Leoncini, Xavier
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The influence of networks topology on collective properties of dynamical systems defined upon it is studied in the thermodynamic limit. A network model construction scheme is proposed where the number of links, the average eccentricity and the clustering coefficient are controlled. This is done by rewiring links of a regular one dimensional chain according to a probability $p$ within a specific range $r$, that can depend on the number of vertices $N$. We compute the thermodynamic behavior of a system defined on the network, the $XY-$rotors model, and monitor how it is affected by the topological changes. We identify the network dimension $d$ as a crucial parameter: topologies with $d\textless{}2$ exhibit no phase transitions while ones with $d\textgreater{}2$ display a second order phase transition. Topologies with $d=2$ exhibit states characterized by infinite susceptibility and macroscopic chaotic/turbulent dynamical behavior. These features are also captured by $d$ in the finite size context.
Evidence for suppression of collective magnetism in Fe-Ag granular multilayers
Creators: name: Kiss, László F.
name: Bujdosó, László
name: Kaptás, Dénes
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Evidence for the suppression of collective magnetic behavior of dipolarly interacting Fe nanoparticles is found in Fe-Ag granular multilayers. Interaction of Fe particles located in neighboring Fe layers is studied as a function of the nominal thickness of the Ag layer in between only two Fe layers. The surprisingly increasing interaction with increasing Ag-layer thickness, verified by memory-effect measurements, is explained by the formation of pinholes in the Ag layer at small Ag thicknesses, allowing direct ferromagnetic coupling between Fe particles in neighboring Fe layers which may hinder the frustration of superspins favored by dipolar interactions. At larger Ag thicknesses, the Ag layer is continuous without pinholes and frustration leads to the appearance of the superspin-glass state. The effect of increasing interactions correlates well with the growing deviation at low temperatures of the measured field-cooled (FC) magnetization from the interaction-free FC curve calculated by a model based on the relaxation of two-level systems. Similar phenomenon is reported in a recently published paper (Sánchez et al., Small 2022, 18, 2106762) where a dense nanoparticle system is studied. The collective magnetic behavior of the particles due to dipolar interactions is suppressed when the anisotropy energy of the individual particles exceeds a certain threshold.
description: 13 pages, 3 figures
Нутритивная эпигенетика и эпигенетические эффекты грудного молока
Creators: name: Lukoyanova, O.L.
name: Borovik, T.E.
Publisher: name: Вопросы питания
Year: 2015
Subjects: НУТРИТИВНАЯ ЭПИГЕНЕТИКА
NUTRITIONAL EPIGENETICS
ГРУДНОЕ МОЛОКО
HUMAN BREAST MILK
ЭКСПРЕССИЯ ГЕНОВ
GENE EXPRESSION
ГРУДНОЕ ВСКАРМЛИВАНИЕ
BREASTFEEDING
ГЕННЫЙ ПОЛИМОРФИЗМ
GENETIC POLYMORPHISM
ПРОГРАММИРОВАНИЕ ПИТАНИЕМ
NUTRITIONAL PROGRAMMING

description: В статье представлен обзор современной литературы по вопросам нут-ритивной эпигенетики. В настоящее время активно изучается вопрос о влиянии питания, особенно в раннем возрасте и в критические возрастные периоды, на модуляцию экспрессии генов, что в свою очередь оказывает определенное воздействие на здоровье человека в зрелом возрасте. Обозначен термин «нутритивная эпигенетика» научное направление по изучению возможного влияния нутриентов на экспрессию генов. Хорошо известна роль грудного молока в профилактике некротического энтероколита, инфекционных болезней, а также неинфекционных заболеваний, таких как ожирение и связанных с ним расстройств. В статье обсуждаются возможные эпигенетические эффекты грудного молока и отдельных его компонентов. Несмотря на наличие данных, свидетельствующих о прямой связи отдельных компонентов грудного молока с эпигенетическими эффектами, эти механизмы остаются малоизученными.The article provides an overview of the current literature on nutritional epigenetics. There are currently actively studied hypothesis that nutrition especially in early life or in critical periods of the development, may have a role in modulating gene expression, and, therefore, have later effects on health in adults. Nutritional epigenetics concerns knowledge about the possible effects of nutrients on gene expression. Human breast milk is well-known for its ability in preventing necrotizing enterocolitis, infectious diseases, and also non-communicable diseases, such as obesity and related disorders. This paper discusses about presumed epigenetic effects of human breast milk and some its components. While evidence suggests that a direct relationship may exist of some components of human breast milk with epigenetic changes, the mechanisms involved are stillunclear.
Pressure distribution of the high-redshift cluster of galaxies CL J1226.9+3332 with NIKA
Creators: name: Adam, R.
name: Comis, B.
name: Macías-Pérez, J. -F.
name: Adane, A.
name: Ade, P.
name: André, P.
name: Beelen, A.
name: Belier, B.
name: Benoît, A.
name: Bideaud, A.
name: Billot, N.
name: Blanquer, G.
name: Bourrion, O.
name: Calvo, M.
name: Catalano, A.
name: Coiffard, G.
name: Cruciani, A.
name: D'Addabbo, A.
name: Désert, F. -X.
name: Doyle, S.
name: Goupy, J.
name: Kramer, C.
name: Leclercq, S.
name: Martino, J.
name: Mauskopf, P.
name: Mayet, F.
name: Monfardini, A.
name: Pajot, F.
name: Pascale, E.
name: Perotto, L.
name: Pointecouteau, E.
name: Ponthieu, N.
name: Revéret, V.
name: Ritacco, A.
name: Rodriguez, L.
name: Savini, G.
name: Schuster, K.
name: Sievers, A.
name: Tucker, C.
name: Zylka, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The thermal Sunyaev-Zel'dovich (tSZ) effect is expected to provide a low scatter mass proxy for galaxy clusters since it is directly proportional to the cluster thermal energy. The tSZ observations have proven to be a powerful tool for detecting and studying them, but high angular resolution observations are now needed to push their investigation to a higher redshift. In this paper, we report high angular (< 20 arcsec) resolution tSZ observations of the high-redshift cluster CL J1226.9+3332 (z=0.89). It was imaged at 150 and 260 GHz using the NIKA camera at the IRAM 30-meter telescope. The 150 GHz map shows that CL J1226.9+3332 is morphologically relaxed on large scales with evidence of a disturbed core, while the 260 GHz channel is used mostly to identify point source contamination. NIKA data are combined with those of Planck and X-ray from Chandra to infer the cluster's radial pressure, density, temperature, and entropy distributions. The total mass profile of the cluster is derived, and we find $M_{500} = 5.96^{+1.02}_{-0.79} $ x $10^{14} M_{\odot}$ within the radius $R_{500} = 930^{+50}_{-43}$ kpc, at a 68% confidence level. ($R_{500}$ is the radius within which the average density is 500 times the critical density at the cluster's redshift.) NIKA is the prototype camera of NIKA2, a KIDs (kinetic inductance detectors) based instrument to be installed at the end of 2015. This work is, therefore, part of a pilot study aiming at optimizing tSZ NIKA2 large programs.
description: 12 pages, 18 figures
Ion and electron heating during magnetic reconnection in weakly collisional plasmas
Creators: name: Numata, R.
name: Loureiro, N. F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Magnetic reconnection and associated heating of ions and electrons in strongly magnetised, weakly collisional plasmas are studied by means of gyrokinetic simulations. It is shown that an appreciable amount of the released magnetic energy is dissipated to yield (irreversible) electron and ion heating via phase mixing. Electron heating is mostly localized to the magnetic island, not the current sheet, and occurs after the dynamical reconnection stage. Ion heating is comparable to electron heating only in high-beta plasmas, and results from both parallel phase mixing and perpendicular phase mixing due to finite Larmor radius effects; in space, ion heating is localized to the interior of a secondary island (plasmoid) that arises from the instability of the current sheet.
description: 16 pages, 13 figures, submitted to J. Plasma Phys.; replaced to match published version
Electric-field-driven resistive switching in dissipative Hubbard model
Creators: name: Li, Jiajun
name: Aron, Camille
name: Kotliar, Gabriel
name: Han, Jong E
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study how strongly correlated electrons on a dissipative lattice evolve from equilibrium when driven by a constant electric field, focusing on the extent of the linear regime and hysteretic non-linear effects at higher fields. We access the non-equilibrium steady states, non-perturbatively in both the field and the electronic interactions, by means of a non-equilibrium dynamical mean-field theory in the Coulomb gauge. The linear response regime is limited by Joule heating effects and breaks down at fields orders of magnitude smaller than the quasi-particle energy scale. For large electronic interactions, strong but experimentally accessible electric fields can induce a resistive switching by driving the strongly correlated metal into a Mott insulator. Hysteretic $I$-$V$ curves suggest that the non-equilibrium current is carried through a spatially inhomogeneous metal-insulator mixed state.
description: 5 pages. 4 figures
Decreto Rectoral 1478: por el cual se adopta el reglamento Formativo-Preventivo y Disciplinario  de los estudiantes de la Unviersidad del Rosario  (16 diciembre de 2016)
Creators: name: Secretaria General
Publisher: name: Universidad del Rosario
Year: 2016

description: Por el cual se adopta el reglamento Formativo-Preventivo y Disciplinario  de los estudiantes de la Unviersidad del Rosario. (Este Decreto fue derogado ´por el Decreto Rectoral 1782  del 10 de julio de 2023.
Structural Evolution at the Northeast North German Basin Margin: From Initial Triassic Salt Movement to Late Cretaceous‐Cenozoic Remobilization
Creators: name: Ahlrichs, Niklas
name: Hübscher, Christian
name: Noack, Vera
name: Schnabel, Michael
name: Damm, Volkmar
name: Krawczyk, Charlotte M.
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 550 Geowissenschaften
subject: Mesozoic structural evolution
subject: salt tectonics
subject: Baltic Sea
subject: faults
subject: seismic imaging
subject: gravity gliding

description: In this study, we investigate the regional tectonic impact on salt movement at the northeastern margin of the intracontinental North German Basin. We discuss the evolution of salt pillows in the Bay of Mecklenburg in the light of thick‐ and thin‐skinned tectonics, including gravity gliding, and differential loading using seismic imaging. Stratigraphic and structural interpretation of a 170 km long, multichannel seismic line, extending from the Bay of Mecklenburg to northeast of Rügen Island, incorporates well information of nearby onshore wells. This new high‐resolution seismic line completely images the stratigraphic and tectonic pattern of the subsurface, from the base of the Zechstein to the seafloor. Our analysis reveals that subsidence during Late Triassic to Early Cretaceous at the northeastern basin margin was associated with transtensional dextral strike slip movement within the Trans‐European Suture Zone. We reinterpret the Werre and Prerow Fault Zones west of Rügen Island as an inverted, thin‐skinned normal fault system associated with the formation of the Western Pomeranian Fault System. Salt movement in the Bay of Mecklenburg was initiated in the Late Triassic and lasted until the Early Jurassic. A second phase of salt pillow growth occurred during the Coniacian until Cenozoic and correlates with compression‐related regional basin inversion due to the onset of the Africa‐Iberia‐Europe convergence. Thin‐skinned extensional initialization of salt pillow growth and compressional salt remobilization explains salt pillow evolution in the Bay of Mecklenburg. Additionally, we discuss an impact of gravity gliding on salt pillow evolution induced by basin margin tilt.
Continuification-based control of large multiagent systems in a ring
Creators: name: Maffettone, Gian Carlo
name: Boldini, Alain
name: di Bernardo, Mario
name: Porfiri, Maurizio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we propose a method to control large-scale multiagent systems swarming in a ring. Specifically, we use a continuification-based approach that transforms the microscopic, agent-level description of the system dynamics into a macroscopic, continuum-level representation, which we employ to synthesize a control action towards a desired distribution of the agents. The continuum-level control action is then discretized at the agent-level in order to practically implement it. To confirm the effectiveness and the robustness of the proposed approach, we complement theoretical derivations with a series of numerical simulations.
Decreto Rectoral 1781: reglamenta el ingreso a los programas académicos de pregrado las becas de Excelencia Académica: “Mérito URosario, Mérito URosario Internacional y Mérito URosario Prueba de Estado” y se derogan los artículos 1 al 6 del título I Capítulo II del Decreto Rectoral 1433 de 2016
Creators: name: Secretaría General
Publisher: name: Universidad del Rosario
Year: 2023

description: Las becas de excelencia reglamentadas en el presente Decreto, tendrán las siguinetes vías para su reconocimiento para aspirantes que ingresen por primera vez a la Universidad del Rosario a programas de pregrado: (i)  Beca Mérito URosario por los resultados de la prueba interna del proceso de admisión; (ii) Beca Mérito URosario Prueba de Estado por los resultados de las pruebas Saber 11°, y (iii) Beca Mérito URosario Internacional por los resultados de bachilleres que se graduaron con diploma de Bachillerato con Currículo Internacional. Por medio de este Decreto se derogan los artículos 1 al 6 del título I Capítulo II del Decreto Rectoral 1433 de 2016.
title: Faktoren der Variation zwischen "das" und "was" als relativsatzeinleitende Elemente im Standard und in den bairischen Dialekten Österreichs
Creators: name: Weiß, Isabel
Year: 2022

description: Die vorliegende Arbeit fokussiert die Variation 'das' vs. 'was' als Relativsatzanschlüsse, indem mittels Onlinefragebogen und darin Ergänzungs-, Bildbeschreibungs- und Bewertungsfragen Relativsatzanschlüsse bei substantivischen Bezugselementen im Neutrum abgefragt werden. Dabei sind die einzelnen Fragen sowohl in intendiert dialektnahe als auch in intendiert standardnahe Kontexte eingebettet. Die Antworten belegen das d-Pronomen 'das' in allen Fragen als häufigste Variante. Je nach Situation zeigt sich darüber hinaus eine unterschiedlich große Variation und eine unterschiedliche Wahl der Varianten. Es erscheint überraschend, dass die zweithäufigste Variante bei Fragen mit standardsprachlichem Input das Relativpronomen 'welches' ist. Dadurch ergeben sich im Weiteren insbesondere für die Untersuchung außersprachlicher Variablen oft keine validen Ergebnisse, weil Daten mit 'was' nur eine geringe Anzahl ausmachen. Gleichzeitig lassen sich insgesamt keine Einflussvariablen für die Wahl 'das' vs. 'was' in standardnahen Kontexten feststellen. Im Gegensatz dazu bildet 'was' in dialektnahen Kontexten die zweithäufigste und 'das was' die dritthäufigste Variante und es stehen mehrere Variablen in statistisch signifikanten Zusammenhängen mit der Wahl 'das' vs. 'was'.
Supplemental information for: 'Associations of early pregnancy metabolite profiles with gestational blood pressure development'
Creators: name: Blaauwendraad, Sophia
name: Wahab, Rama J.
name: B. van Rijn, Bas
name: Koletzko, Berthold
name: Jaddoe, Vincent WV
name: Gaillard, Romy
Publisher: name: figshare
Year: 2022
Subjects: subject: 111402 Obstetrics and Gynaecology
subject: FOS: Clinical medicine

description: Supplementary material for 'Associations of early pregnancy metabolite profiles with gestational blood pressure development'
title: 100 Jahre Grabungsgeschichte in Abydos/Umm el-Qa’ab
Creators: name: Greshake, Magdalena Sophia
Year: 2022

description: Das Ziel dieser Masterarbeit war es, die archäologischen Konzepte der Ägyptologen Amélineau, Petrie und Dreyer anhand der vorhandenen Ergebnisse zu den Grabanlagen des Djer, des Den und des Qa’a in Abydos/Umm el-Qa’ab herauszuarbeiten. Dafür wurden nach einer Einführung in die verschiedenen Thematiken zunächst grundlegende relevante Informationen, wie formulierte Ziele sowie ansatzweise rekonstruierbare Arbeitsweisen, angeführt. Im Anschluss wurden die vorhandenen Informationen zu den Grabkomplexen so ausführlich wie möglich dargelegt. Es ließen sich mehrere Aspekte für jedes der Konzepte differenzieren. Zudem konnten die Forschungen auf ihre wissenschaftliche Qualität nach heute gängigen Kriterien untersucht werden. Im Vergleich der herausgearbeiteten archäologischen Konzepte, die den Grabungen zugrunde lagen, wurden diverse Unterschiede deutlich. Auch konnte aufgezeigt werden, dass sich der wissenschaftliche Anspruch im Verlauf der 100 Jahre, die teilweise zwischen diesen Grabungen liegen, verändert hat: Es gelten u. a. die Ansprüche größtmöglicher Objektivität, Vollständigkeit der Untersuchung, und Erstellen eines Gesamtbildes, auf welches sich sämtliche Rekonstruktionen und Interpretationen nachvollziehbar stützen. Zusammenfassend konnte durch diese Untersuchungen ein besseres Verständnis in die Anfänge der ägyptischen Archäologie erreicht und die Wissenschaftlichkeit der archäologischen Grabungen im Laufe der Zeit herausgearbeitet werden.
Observational effects of the early episodically dominating dark energy
Creators: name: Park, Chan-Gyung
name: Lee, Jae-heon
name: Hwang, Jai-chan
name: Noh, Hyerim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate observational consequences of the early episodically dominating dark energy on the evolution of cosmological structures. For this aim, we introduce the minimally coupled scalar field dark energy model with the Albrecht-Skordis potential which allows a sudden ephemeral domination of dark energy component during the radiation or early matter era. The conventional cosmological parameters in the presence of such an early dark energy are constrained with WMAP and Planck cosmic microwave background radiation data including other external data sets. It is shown that in the presence of such an early dark energy the estimated cosmological parameters can deviate substantially from the currently known $Λ\textrm{CDM}$-based parameters, with best-fit values differing by several percents for WMAP and by a percent level for Planck data. For the latter case, only a limited amount of dark energy with episodic nature is allowed since the Planck data strongly favors the $Λ\textrm{CDM}$ model. Compared with the conventional dark energy model, the early dark energy dominating near radiation-matter equality or at the early matter era results in the shorter cosmic age or the presence of tensor-type perturbation, respectively. Our analysis demonstrates that the alternative cosmological parameter estimation is allowed based on the same observations even in Einstein's gravity.
description: 13 pages, 8 figures, 3 tables. Published in Phys. Rev. D
The effect of boehmite nanoparticles (γ‐AlOOH) on nanomechanical and thermomechanical properties correlated to crosslinking density of epoxy
Creators: name: Ghasem Zadeh Khorasani, Media
name: Silbernagl, Dorothee
name: Szymoniak, Paulina
name: Hodoroaba, Vasile-Dan
name: Sturm, Heinz
Publisher: name: Technische Universität Berlin
Year: 2019
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: boehmite nanoparticles
subject: epoxy resin
subject: nanomechanical properties
subject: atomic force microscopy
subject: intermodulation
subject: crosslinking density

description: We show that complex physical and chemical interactions between boehmite nanoparticles and epoxy drastically affect matrix properties, which in the future will provide tuning of material properties for further optimization in applications from automotive to aerospace. We utilize intermodulation atomic force microscopy (ImAFM) for probing local stiffness of both particles and polymer matrix. Stiff particles are expected to increase total stiffness of nanocomposites and the stiffness of polymer should remain unchanged. However, ImAFM revealed that stiffness of matrix in epoxy/boehmite nanocomposite is significantly higher than unfilled epoxy. The stiffening effect of the boehmite on epoxy also depends on the particle concentration. To understand the mechanism behind property alteration induced by boehmite nanoparticles, network architecture is investigated using dynamic mechanical thermal analysis (DMTA). It was revealed that although with 15 wt% boehmite nanoparticles the modulus at glassy state increases, crosslinking density of epoxy for this composition is drastically low.
Dispersive Analysis of $ω/ϕ\rightarrow 3π,\,πγ^*$
Creators: name: Danilkin, I. V.
name: Fernández-Ramírez, C.
name: Guo, P.
name: Mathieu, V.
name: Schott, D.
name: Shi, M.
name: Szczepaniak, A. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The decays $ω/ϕ\rightarrow 3π$ are considered in the dispersive framework that is based on the isobar decomposition and sub-energy unitarity. The inelastic contributions are parametrized by the power series in a suitably chosen conformal variable that properly accounts for the analytic properties of the amplitude. The Dalitz plot distributions and integrated decay widths are presented. Our results indicate that the final state interactions may be sizable. As a further application of the formalism we also compute the electromagnetic transition form factors of $ω/ϕ\rightarrow π^0γ^*$.
description: 14 pages, 9 figures
NA62 Liquid Krypton Purity Monitor
Creators: name: Bremer, Johan
name: Bryman, Douglas
name: Danielsson, Hans
name: Falaleev, Valeri
name: Koettig, Torsten
name: Kurchaninov, Leonid
name: Liberadzka-Porret, Joanna
name: Onufrena, Aleksandra
name: Velghe, Bob
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A system for determining the purity of liquid krypton employed in the NA62 rare kaon decay experiment at CERN was developed based on the use of a time projection chamber. The attenuation of drifting ionization electrons from absorption of 511 keV gamma rays in liquid krypton was measured to estimate the purity. The setup was tested with krypton purified from commercial sources.