cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gravitational Microlensing - A Report on the MACHO Project
Creators: name: Sutherland, Will
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: There is abundant evidence that the mass of the Universe is dominated by dark matter of unknown form. The MACHO project is one of several teams searching for the dark matter around our Galaxy in the form of Massive Compact Halo Objects (MACHOs). If a compact object passes very close to the line of sight to a background star, the gravitational deflection of light causes an apparent brightening of the star, i.e. a gravitational `microlensing' event. Such events will be very rare, so millions of stars must be monitored for many years. We describe our search for microlensing using a very large CCD camera on the dedicated 1.27m telescope at Mt. Stromlo, Australia: currently some 14 events have been discovered towards the Large Magellanic Cloud. The lack of short-timescale events excludes planetary mass MACHOs as a major contributor to the dark matter, but the observed long events (durations 1--6 months) suggest that a major fraction may be in fairly massive objects $\sim 0.5 \Msun$. It is currently difficult but not impossible to explain these events by other lens populations; we discuss some prospects for clarifying the nature of the lenses.
description: RevTex, 20 pages incl. 11 Postscript figures. Rev. Mod. Phys. 'Colloquium' article, to appear Jan. 1999
Integrable Yang-Mills-Higgs Equations in 3-Dimensional De Sitter Space-Time
Creators: name: Kotecha, V
name: Ward, R S
Publisher: name: arXiv
Year: 2000
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: This paper describes an integrable Yang-Mills-Higgs system on (2+1)-dimensional de Sitter space-time. It is the curved-space-time analogue of the Bogomolnyi equations for monopoles on R^3. A number of solutions, of various types, are constructed.
description: 11 pages, one eps figure included, to appear in JMP
Damping of Oscillations in Layer-by-Layer Growth
Creators: name: Kallabis, H.
name: Brendel, L.
name: Krug, J.
name: Wolf, D. E.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a theory for the damping of layer-by-layer growth oscillations in molecular beam epitaxy. The surface becomes rough on distances larger than a layer coherence length which is substantially larger than the diffusion length. The damping time can be calculated by a comparison of the competing roughening and smoothening mechanisms. The dependence on the growth conditions, temperature and deposition rate, is characterized by a power law. The theoretical results are confirmed by computer simulations.
description: 19 pages, RevTex, 5 Postscript figures, needs psfig.sty
Generalized Lagrangian of N = 1 supergravity and its canonical constraints with the real Ashtekar variable
Creators: name: Tsuda, Motomu
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We generalize the Lagrangian of N = 1 supergravity (SUGRA) by using an arbitrary parameter $ξ$, which corresponds to the inverse of Barbero's parameter $β$. This generalized Lagrangian involves the chiral one as a special case of the value $ξ= \pm i$. We show that the generalized Lagrangian gives the canonical formulation of N = 1 SUGRA with the real Ashtekar variable after the 3+1 decomposition of spacetime. This canonical formulation is also derived from those of the usual N = 1 SUGRA by performing Barbero's type canonical transformation with an arbitrary parameter $β(=ξ^{-1})$. We give some comments on the canonical formulation of the theory.
description: 17 pages, LATEX
Phase transitions in the binary-alloy Hubbard model: insight from strong-coupling perturbation theory
Creators: name: Adibi, Elaheh
name: Habibi, Alireza
name: Jafari, S. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the binary-alloy with composition A$_x$B$_{1-x}$ of two atoms with ionic energy scales $\pmΔ$, an apparent Ander- son insulator (AI) is obtained as a result of randomness in the position of atoms. Using our recently developed technique that combines the local self-energy from strong-coupling perturbation theory with the transfer matrix method, we are able to address the problem of adding a Hubbard $U$ to the binary alloy problem for millions of lattice sites on the honeycomb lattice. By adding the Hubbard interaction $U$, the resulting AI phase will become metallic which in our formulation can be clearly attributed to the screening of disorder by Hubbard $U$. Upon further increase in $U$, again the AI phase emerges which can be understood in terms of the suppressed charge fluctuations due to residual Hubbard interaction of which the randomness takes advantage and localizes the quasi-particles of the metallic phase. The ultimate destiny of the system at very large $U$ is to become a Mott insulator (MI). We construct the phase diagram of this model in the plane of ($U,Δ$) for various compositions $x$.
Magnon dressing by orbital excitations in ferromagnetic planes of K$_2$CuF$_4$ and LaMnO$_3$
Creators: name: Snamina, Mateusz
name: Oleś, Andrzej M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that even when spins and orbitals disentangle in the ground state, spin excitations are renormalized by the local tuning of $e_g$ orbitals in ferromagnetic planes of K$_2$CuF$_4$ and LaMnO$_3$. As a result, dressed spin excitations (magnons) obtained within the electronic model propagate as quasiparticles and their energy renormalization depends on momentum ${\vec k}$. Therefore magnons in spin-orbital systems go beyond the paradigm of the effective Heisenberg model with nearest neighbor spin exchange derived from the ground state --- spin-orbital entanglement in excited states predicts large magnon softening at the Brillouin zone boundary, and in case of LaMnO$_3$ the magnon energy at the $M=(π,π)$ point may be reduced by $\sim 45$\%. In contrast, simultaneously the stiffness constant near the Goldstone mode is almost unaffected. We elucidate physics behind magnon renormalization in spin-orbital systems and explain why long wavelength magnons are unrenormalized while simultaneously energies of short wavelength magnons are reduced by orbital fluctuations. In fact, the ${\vec k}$-dependence of the magnon energy is modified mainly by dispersion which originates from spin exchange between second neighbors along the cubic axes $a$ and $b$.
description: 15 pages, 4 figures, submitted
Additional file 1 of Neuroprotective effects of alisol A 24-acetate on cerebral ischaemia–reperfusion injury are mediated by regulating the PI3K/AKT pathway
Creators: name: Lu, Taotao
name: Li, Huihong
name: Zhou, Yangjie
name: Wei, Wei
name: Ding, Linlin
name: Zhan, Zengtu
name: Liu, Weilin
name: Tao, Jing
name: Xue, Xiehua
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 1. Monitoring of cerebral blood flow and detection of brain tissue ischemia in mice.
Instanton based importance sampling for rare events in stochastic PDEs
Creators: name: Ebener, Lasse
name: Margazoglou, Georgios
name: Friedrich, Jan
name: Biferale, Luca
name: Grauer, Rainer
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present a new method for sampling rare and large fluctuations in a non-equilibrium system governed by a stochastic partial differential equation (SPDE) with additive forcing. To this end, we deploy the so-called instanton formalism that corresponds to a saddle-point approximation of the action in the path integral formulation of the underlying SPDE. The crucial step in our approach is the formulation of an alternative SPDE that incorporates knowledge of the instanton solution such that we are able to constrain the dynamical evolutions around extreme flow configurations only. Finally, a reweighting procedure based on the Girsanov theorem is applied to recover the full distribution function of the original system. The entire procedure is demonstrated on the example of the one-dimensional Burgers equation. Furthermore, we compare our method to conventional direct numerical simulations as well as to Hybrid Monte Carlo methods. It will be shown that the instanton-based sampling method outperforms both approaches and allows for an accurate quantification of the whole probability density function of velocity gradients from the core to the very far tails.
description: 8 pages, 4 figures
Three-level laser heat engine at optimal performance with ecological function
Creators: name: Singh, Varinder
name: Johal, Ramandeep S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Although classical and quantum heat engines work on entirely different fundamental principles, there is an underlying similarity. For instance, the form of efficiency at optimal performance may be similar for both types of engines. In this work, we study a three-level laser quantum heat engine operating at maximum ecological function (EF) which represents a compromise between the power output and the loss of power due to entropy production. We derive analytic expressions for efficiency under the assumptions of strong matter-field coupling and high bath temperatures. Upper and lower bounds on the efficiency exist in case of extreme asymmetric dissipation when the ratio of system-bath coupling constants at the hot and the cold contacts respectively approaches, zero or infinity. These bounds have been established previously for various classical models of Carnot-like engines. We conclude that while the engine produces at least 75\% of the power output as compared with the maximum power conditions, the fractional loss of power is appreciably low in case of the engine operating at maximum EF, thus making this objective function relevant from an environmental point of view.
description: 9 pages, 5 figures
Dynamo effect in parity-invariant flow with large and moderate separation of scales
Creators: name: Zheligovsky, V. A.
name: Podvigina, O. M.
name: Frisch, U.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: It is shown that non-helical (more precisely, parity-invariant) flows capable of sustaining a large-scale dynamo by the negative magnetic eddy diffusivity effect are quite common. This conclusion is based on numerical examination of a large number of randomly selected flows. Few outliers with strongly negative eddy diffusivities are also found, and they are interpreted in terms of the closeness of the control parameter to a critical value for generation of a small-scale magnetic field. Furthermore, it is shown that, for parity-invariant flows, a moderate separation of scales between the basic flow and the magnetic field often significantly reduces the critical magnetic Reynolds number for the onset of dynamo action.
description: 44 pages,11 figures, significantly revised version
Momentum-dependent power law measured in an interacting quantum wire beyond the Luttinger limit
Creators: name: Jin, Y.
name: Tsyplyatyev, O.
name: Moreno, M.
name: Anthore, A.
name: Tan, W. K.
name: Griffiths, J. P.
name: Farrer, I.
name: Ritchie, D. A.
name: Glazman, L. I.
name: Schofield, A. J.
name: Ford, C. J. B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Power laws in physics have until now always been associated with a scale invariance originating from the absence of a length scale. Recently, an emergent invariance even in the presence of a length scale has been predicted by the newly-developed nonlinear-Luttinger-liquid theory for a one-dimensional (1D) quantum fluid at finite energy and momentum, at which the particle's wavelength provides the length scale. We present the first experimental example of this new type of power law in the spectral function of interacting electrons in a quantum wire using a transport-spectroscopy technique. The observed momentum dependence of the power law in the high-energy region matches the theoretical predictions, supporting not only the 1D theory of interacting particles beyond the linear regime but also the existence of a new type of universality that emerges at finite energy and momentum.
title: Lokale alpha-Rezeptorblockade zur Gefäßdilatation bei katecholamin-induzierter symmetrischer peripherer Ischämie – erster Fallbericht
Creators: name: Lamby, Philipp
name: Baringer, Magnus
name: Strauss, Catharina
name: Prantl, Lukas
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Fragestellung: Die Symmetrische periphere Gangrän (SPG) ist die klinische Manifestation einer peripheren Gangrän der Akralbereiche ohne Anzeichen von Großgefäßverschluss oder Vaskulitis. Diese wird u.a. durch hochdosierte Katecholamingaben während der intensivmedizinischen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
Chaos may make black holes bright
Creators: name: Levin, Janna
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Black holes cannot be seen directly since they absorb light and emit none, the very quality which earned them their name. We suggest that black holes may be seen indirectly through a chaotic defocusing of light. A black hole can capture light from a luminous companion in chaotic orbits before scattering the light in random directions. To a distant observer, the black hole would appear to light up. If the companion were a bright radio pulsar, this estimate suggests the black hole echo could be detectible.
description: Minor Revisions. Published in PRD 60, 64015 (1999)
title: Die Rolle unterschiedlicher Schwannzell-Phänotypen bei der stammzellbasierten peripheren Nervenregeneration
Creators: name: Klein, Silvan
name: Prantl, Lukas
name: Hammer, Nikolas
name: Anker, Alexandra
name: Morsczeck, Christian
name: Felthaus, Oliver
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Physiologischerweise unterlaufen Schwannzellen (SZ) nach peripheren Nervenverletzungen eine Änderung des Phänotyps von myelinisierenden SZ zu aktivierten SZ. Der Mangel aktivierter SZ bei Nervendefektverletzungen scheint wiederum maßgeblich für die insuffiziente Regeneration[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
Helical vs. fundamental solitons in optical fibers
Creators: name: Malomed, Boris
name: Peng, G. D.
name: Chu, P. L.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider solitons in a nonlinear optical fiber with a single polarization in a region of parameters where it carries exactly two distinct modes, the fundamental one and the first-order helical mode. From the viewpoint of applications to dense-WDM communication systems, this opens way to double the number of channels carried by the fiber. Aside from that, experimental observation of helical (spinning) solitons and collisions between them and with fundamental solitons are issues of fundamental interest. We introduce a system of coupled nonlinear Schroedinger equations for fundamental and helical modes, which have nonstandard values of the cross-phase-modulation coupling constants, and investigate, analytically and numerically, results of "complete" and "incomplete" collisions between solitons carried by the two modes. We conclude that the collision-induced crosstalk is partly attenuated in comparison with the usual WDM system, which sometimes may be crucially important, preventing merger of the colliding solitons into a breather. The interaction between the two modes is found to be additionally strongly suppressed in comparison with that in the WDM system in the case when a dispersion-shifted or dispersion-compensated fiber is used.
description: a plain latex file with the text and two ps files with figures. Physica Scripta, in press
Positive and Negative Photospheric Fields in Solar Cycles 21 - 24
Creators: name: Vernova, E. S.
name: Tyasto, M. I.
name: Baranov, D. G.
name: Danilova, O. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Distribution of the positive and negative photospheric fields is studied on the base of synoptic maps of the photospheric magnetic field produced by the National Solar Observatory Kitt Peak (NSO Kitt Peak) for 1976-2016. In the analysis only the sign of the field irrespective of its strength is taken into account, emphasizing the role of the fields with average and weak strengths. Time changes in the positive and negative magnetic fields for two hemispheres, for the high latitudes and for the sunspot zone as well as their imbalances are considered. Distributions of fields of opposite polarities, which are defined mostly by the fields of the high latitudes, change with a 22-year cycle. The polarity imbalance in each hemisphere is closely connected with the dipole moment $g_{10}$. The imbalance of high latitudes for two hemispheres changes with the 22-year period and coincides with the sign of both the polar field in the southern hemisphere, and the quadrupole moment $g_{20}$. For the magnetic fields of the sunspot zone during ~75% of time a connection of the magnetic field imbalance with the quadrupole moment taken with the reversed sign $- g_{20}$ and with the sign of the polar field in the northern hemisphere is observed. The received results testify to cyclic changes in the polarity imbalance.
description: 10 pages, 7 figures, submitted to Geomagnetism and Aeronomy
title: Druck- und Sauerstoffmessung während der komplexen Vakuumbehandlung (NPWT)
Creators: name: Biermann, Niklas
name: Taeger, Christian
name: Brix, Eva
name: Schiltz, Daniel
name: Prantl, Lukas
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Der zugrunde liegende Wirkmechanismus der komplexen Vakuumbehandlung (NPWT) konnte bislang nicht abschließend geklärt werden und ist in der internationalen Literatur Gegenstand der Diskussion. Es gibt Hinweise, die als Grund für die guten Behandlungsergebnisse die durch den Vakuumverband[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
title: Veränderung der Muskelzelldifferenzierung nach Bestrahlung der Brust
Creators: name: Wallner, Christoph
name: Drysch, Marius
name: Becerikli, Mustafa
name: Wagner, Johannes
name: Dadras, Mehran
name: Lehnhardt, Marcus
name: Behr, Björn
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Eine von acht Frauen erkrankt in ihrem Leben an Brustkrebs war diese Tumorentität zur allgemeinen insgesamt macht. Das multimodale Behandlungskonzept des Brustkrebses sieht häufig eine Bestrahlung vor. Die ionisierende Strahlung führt zu einer Veränderung des Gewebes.[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
POST AND CORE SYSTEMS IN PROSTHODONTICS: A COMPREHENSIVE OVERVIEW
Creators: name: Khahramonova Nargiza Hamza kiziScientific supervisor : DsC., dos., Axmedov Alisher Astanovich Samarkand State Medical University
Publisher: name: Zenodo
Year: 2025

description: Post and core systems are essential components in prosthodontic dentistry,particularly for the restoration of endodontically treated teeth. These systemsprovide the necessary structural support and retention for final restorations,ensuring both functional and aesthetic outcomes. This article explores the varioustypes of post and core systems, their indications, materials used, and clinicalconsiderations for successful application.
Superadiabatic generation of cat states in bosonic Josephson junctions under particle losses
Creators: name: Hatomura, Takuya
name: Pawłowski, Krzysztof
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate a superadiabatic scheme to produce a cat state in a bosonic Josephson junction in absence and presence of particle losses. The generation scheme is based on shortcuts to adiabaticity and strongly relies on the parity conservation. The parity conservation also ensures that the produced state is a superposition of cat states with various sizes, i.e., a "cats state". Parity is also the quantity to be measured in order to utilize the produced state in interferometry. The generation scheme still works even if a number of particle losses during generation are substantial.
The Low-Cost, Moderate-Cost, and Liberal Food Plans: 2003 Administrative Report
Creators: name: Carlson, Andrea
name: Lino, Mark
name: Gerrior, Shirley A.
name: Basiotis, P. Peter
name: Carlson, Andrea
name: Lino, Mark
name: Gerrior, Shirley A.
name: Basiotis, P. Peter
Publisher: name: Unknown
Year: 2003
Subjects: Agricultural and Food Policy
Demand and Price Analysis
Food Consumption/Nutrition/Food Safety
Research Methods/ Statistical Methods

description: The Low-Cost, Moderate-Cost, and Liberal Food Plans, three fundamental parts of the U.S. food guidance system, are now revised. The plans provide representative healthful market baskets at three different cost levels. This revision of the plans incorporates recent developments in nutrition standards and dietary guidance as well as updates reflective of food consumption and nutrient content of foods. This revision also maintains a constant real cost for each plan.
HOUSEHOLDS AND FARMERS' WILLINGNESS TO PAY FOR IMPROVED SOLID WASTE MANAGEMENT AND ITS IMPACT ON AGRICULTURE IN SOKOTO METROPOLIS
Creators: name: Haruna, Abubakar Musa
Publisher: name: kEITH jOURNAL
Year: 2025
Subjects: Willingness to Pay (WTP), Municipal Solid Waste Management (MSWM), Agricu

description: Sokoto metropolis had recently witnessed an alarming increase in solid waste generation which could be harness and use as improved compost. This study examines households’ and Farmers’ willingness to pay for improved solid waste management services and its implications to agriculture. The population used for this study consist of selected households, farmers and stakeholders of solid waste management in Sokoto Metropolis. Multi-stage sampling technique was used in selecting the study respondents. A total of 150 households across low income, middle income, high income as well as mixed commercial residential areas and 30 farmers constituted the samples for the study. Descriptive statistics and logit regression model were used in analyzing the data collected. The results revealed that all household respondents generate waste and the major challenge that impedes willingness to pay is amount charged for the improved waste management services. The logit model vindicated those respondents in high- and middle-income residential areas had increasing tendency of accepting improved refuse waste management and are more willing to pay for improved refuse waste management services. On the other hand, a reasonable percentage of the farmers are willing to accept and pay for sorted refuse waste converted to compost. The unsorted refuse waste was attributed as a cheap source for manure but it contained polythenes, metals and other hazardous element which are harmful to human health and affects crops germination and growth. The improved refuse waste converted to compost could serve as an alternative source for low cost and high-quality manure that is free from those harmful elements, to improve smallholder farmers’ crops productivity. This study therefore recommends for Public-Private-Partnership to address the menace of generated waste and the possible conversion of waste to wealth
Sabores Quilombolas do Baixo Sul
Creators: name: MARQUES, Jádson Fábio de Araújo
name: BRITO, Dione dos Santos
name: ANDRADE, Gisele Teixeira
Publisher: name: Zenodo
Year: 2017
Subjects: Patrimônio imaterial
Culinária
Comunidades Quilombolas

description: Este folheto é produto do projeto "COZINHA QUILOMBOLA: Resgate de Receitas Tradicionais em Comunidades Quilombolas do Baixo Sul da Bahia" contemplado na Chamada Interna 04/2015, Programa Primeiros Projetos, da Pró-Reitoria de Pesquisa, Inovação e Pós-Graduação do Instituto Federal de Educação, Ciência e Tecnologia Baiano, desenvolvido entre março de 2016 e março de 2017. Versão virtual disponível em: https://www.ifbaiano.edu.br/unidades/valenca/files/2017/06/Sabores-quilombolas-do-Baixo-Sul-FINAL.pdf ISBN: 978-85-68329-04-7
Pseudogap, Fermi arc, and Peierls-insulating phase induced by 3D-2D crossover in monolayer VSe2
Creators: name: Umemoto, Yuki
name: Sugawara, Katsuaki
name: Nakata, Yuki
name: Takahashi, Takashi
name: Sato, Takafumi
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: One of important challenges in condensed-matter physics is to realize new quantum states of matter by manipulating the dimensionality of materials, as represented by the discovery of high-temperature superconductivity in atomic-layer pnictides and room-temperature quantum Hall effect in graphene. Transition-metal dichalcogenides (TMDs) provide a fertile platform for exploring novel quantum phenomena accompanied by the dimensionality change, since they exhibit a variety of electronic/magnetic states owing to quantum confinement. Here we report an anomalous metal-insulator transition induced by 3D-2D crossover in monolayer 1T-VSe2 grown on bilayer graphene. We observed a complete insulating state with a finite energy gap on the entire Fermi surface in monolayer 1T-VSe2 at low temperatures, in sharp contrast to metallic nature of bulk. More surprisingly, monolayer 1T-VSe2 exhibits a pseudogap with Fermi arc at temperatures above the charge-density-wave temperature, showing a close resemblance to high-temperature cuprates. This similarity suggests a common underlying physics between two apparently different systems, pointing to the importance of charge/spin fluctuations to create the novel electronic states, such as pseudogap and Fermi arc, in these materials.
description: Nano Res. in press
Gamma ray bursts from superconducting cosmic strings
Creators: name: Berezinsky, V.
name: Hnatyk, B.
name: Vilenkin, A.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Cusps of superconducting strings can serve as GRB engines. A powerful beamed pulse of electromagnetic radiation from a cusp produces a jet of accelerated particles, whose propagation is terminated by the shock responsible for GRB. A single free parameter, the string scale of symmetry breaking $η\sim 10^{14} GeV$, together with reasonable assumptions about the magnitude of cosmic magnetic fields and the fraction of volume that they occupy, explains the GRB rate, duration and fluence, as well as the observed ranges of these quantities. The wiggles on the string can drive the short-time structures of GRB. This model predicts that GRBs are accompanied by strong bursts of gravitational radiation which should be detectable by LIGO, VIRGO and LISA detectors. Another prediction is the diffuse X- and gamma-ray radiation at 8 MeV - 100 GeV with a spectrum and flux comparable to the observed. The weakness of the model is the prediction of too low rate of GRBs from galaxies, as compared with observations. This suggests that either the capture rate of string loops by galaxies is underestimated in our model, or that GRBs from cusps are responsible for only a subset of the observed GRBs not associated with galaxies.
description: 29 pages, Revtex. This is a substantially expanded and revised version of our earlier paper astro-ph/0001213. Final version, to appear in Phys. Rev. D
Non-Archimedean character of quantum buoyancy and the generalized second law of thermodynamics
Creators: name: Bekenstein, Jacob D.
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum buoyancy has been proposed as the mechanism protecting the generalized second law when an entropy--bearing object is slowly lowered towards a black hole and then dropped in. We point out that the original derivation of the buoyant force from a fluid picture of the acceleration radiation is invalid unless the object is almost at the horizon, because otherwise typical wavelengths in the radiation are larger than the object. The buoyant force is here calculated from the diffractive scattering of waves off the object, and found to be weaker than in the original theory. As a consequence, the argument justifying the generalized second law from buoyancy cannot be completed unless the optimal drop point is next to the horizon. The universal bound on entropy is always a sufficient condition for operation of the generalized second law, and can be derived from that law when the optimal drop point is close to the horizon. We also compute the quantum buoyancy of an elementary charged particle; it turns out to be negligible for energetic considerations. Finally, we speculate on the significance of the absence from the bound of any mention of the number of particle species in nature.
description: RevTeX, 16 pages
Holographic Principle during Inflation and a Lower Bound on Density Fluctuations
Creators: name: Rama, S. Kalyana
name: Sarkar, Tapobrata
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We apply the holographic principle during the inflationary stage of our universe. Where necessary, we illustrate the analysis in the case of new and extended inflation which, together, typify generic models of inflation. We find that in the models of extended inflation type, and perhaps of new inflation type also, the holographic principle leads to a lower bound on the density fluctuations.
description: 12 Pages. Latex. Typos fixed; references added
The open web in the implementation of real adaptation to climate change
Creators: name: Byrne, Myles
Publisher: name: Zenodo
Year: 2019
Subjects: climate change
internet
open web
sociology
political science
evolutionary biology
complex systems

description: This paper describes the use of the open internet and web as the critical first step in meaningful adaptation to climate change. Software / web applications implementing the system described herein is largely complete, and will begin to be released in 2020 and throughout the following decade. Originally published here: https://neuroplastic.github.io/climate_social_contract_2020.html
description: {"references": ["Chopra A, Lineweaver CH, The Case for a Gaian Bottleneck: The Biology of Habitability. Astrobiology, 2016 Jan;16(1):7\u201322", "Bookstaber, Richard. The End of Theory: Financial Crises, the Failure of Economics, and the Sweep of Human Interaction. Princeton University Press, 2017.", "Devins, Caryn; Koppl, Roger; Kauffman, Stuart; Felin, Teppo. Against Design, Feb.25 2015, Arizona State Law Journal", "O'Neill, D.W., Fanning, A.L., Lamb, W.F. et al. A good life for all within planetary boundaries. Nat Sustain 1, 88\u201395 (2018)", "Theofanopoulou C, Gastaldon S, O'Rourke T, Samuels BD, Martins PT, et al. (2017) Self-domestication in Homo sapiens: Insights from comparative genomics. PLOS ONE 13(5): e0196700", "Wallerstein, Immanuel (2004). World-Systems Analysis: An Introduction. Duke University Press. p. 44. ISBN 9780822334422", "Tokita CK, Tarnita CE. 2020, Social influence and interaction bias can drive emergent behavioural specialization and modular social networks across systems. J. R. Soc. Interface 17: 20190564", "Abdellaoui, A., Hugh-Jones, D., Yengo, L. et al. Genetic correlates of social stratification in Great Britain. Nat Hum Behav 3, 1332\u20131342 (2019) doi:10.1038/s41562\u2013019\u20130757\u20135"]}
Stellar energetic particles in the magnetically turbulent habitable zones of TRAPPIST-1-like planetary systems
Creators: name: Fraschetti, F.
name: Drake, J. J.
name: Alvarado-Gomez, J. D.
name: Moschou, S. P.
name: Garraffo, C.
name: Cohen, O.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Planets in close proximity to their parent star, such as those in the habitable zones around M dwarfs, could be subject to particularly high doses of particle radiation. We have carried out test-particle simulations of ~GeV protons to investigate the propagation of energetic particles accelerated by flares or travelling shock waves within the stellar wind and magnetic field of a TRAPPIST-1-like system. Turbulence was simulated with small-scale magnetostatic perturbations with an isotropic power spectrum. We find that only a few percent of particles injected within half a stellar radius from the stellar surface escape, and that the escaping fraction increases strongly with increasing injection radius. Escaping particles are increasingly deflected and focused by the ambient spiralling magnetic field as the superimposed turbulence amplitude is increased. In our TRAPPIST-1-like simulations, regardless of the angular region of injection, particles are strongly focused onto two caps within the fast wind regions and centered on the equatorial planetary orbital plane. Based on a scaling relation between far-UV emission and energetic protons for solar flares applied to M dwarfs, the innermost putative habitable planet, TRAPPIST-1e, is bombarded by a proton flux up to 6 orders of magnitude larger than experienced by the present-day Earth. We note two mechanisms that could strongly limit EP fluxes from active stars: EPs from flares are contained by the stellar magnetic field; and potential CMEs that might generate EPs at larger distances also fail to escape.
description: 17 pages, 12 figures, ApJ in press
title: Candidature projet Espaces Limite Identités 2013
Creators: name: TELEMME (UMR 7303)/CCJ (UMR 7299)/LA3M (UMR 7298)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Projet Espaces, limite, identités, porté par Anne Montenach, Pascale Froment (TELEMME), Isabelle Pernin, Lucia Rossi (Centre Camille Juillian) et Mohamed Ouerfelli (LA3M), en 2013
title: Koordination von Forschungsprojekten im Praxis-Alltag
Creators: name: Sukhova, Inesa
name: Fuchs, Katharina
name: Kern, Larissa Patricia
name: Bader, Augustinus
name: Meyer, Ludger
name: Kovacs, Laszlo
name: Bauer, Anna-Theresa
name: Duscher, Dominik
name: Machens, Hans-Günther
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Die Forschung stellt einen integralen Bestandteil des Alltags der Weiterbildungsassistenzärzte/innen an einer Universitätsklinik dar. Dabei werden zahlreiche innovative Therapiekonzepte von der Grundlagenforschung über die translationale Forschung in den klinischen Alltag[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
Ab initio Quantum and ab initio Molecular Dynamics of the Dissociative Adsorption of Hydrogen on Pd(100)
Creators: name: Gross, Axel
name: Scheffler, Matthias
Publisher: name: arXiv
Year: 1997
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The dissociative adsorption of hydrogen on Pd(100) has been studied by ab initio quantum dynamics and ab initio molecular dynamics calculations. Treating all hydrogen degrees of freedom as dynamical coordinates implies a high dimensionality and requires statistical averages over thousands of trajectories. An efficient and accurate treatment of such extensive statistics is achieved in two steps: In a first step we evaluate the ab initio potential energy surface (PES) and determine an analytical representation. Then, in an independent second step dynamical calculations are performed on the analytical representation of the PES. Thus the dissociation dynamics is investigated without any crucial assumption except for the Born-Oppenheimer approximation which is anyhow employed when density-functional theory calculations are performed. The ab initio molecular dynamics is compared to detailed quantum dynamical calculations on exactly the same ab initio PES. The occurence of quantum oscillations in the sticking probability as a function of kinetic energy is addressed. They turn out to be very sensitive to the symmetry of the initial conditions. At low kinetic energies sticking is dominated by the steering effect which is illustrated using classical trajectories. The steering effects depends on the kinetic energy, but not on the mass of the molecules. Zero-point effects lead to strong differences between quantum and classical calculations of the sticking probability. The dependence of the sticking probability on the angle of incidence is analysed; it is found to be in good agreement with experimental data. The results show that the determination of the potential energy surface combined with high-dimensional dynamical calculations, in which all relevant degrees of freedon are taken into account, leads to a detailed understanding of the dissociation dynamics of hydrogen at a transition metal surface.
description: 15 pages, 9 figures, subm. to Phys. Rev. B
Decaying and kicked turbulence in a shell model
Creators: name: Hooghoudt, Jan-Otto
name: Lohse, Detlef
name: Toschi, Federico
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Decaying and periodically kicked turbulence are analyzed within the GOY shell model, to allow for sufficiently large scaling regimes. Energy is transfered towards the small scales in intermittent bursts. Nevertheless, mean field arguments are sufficient to account for the ensemble averaged energy decay E(t) t^{-2} or the parameter dependences for the ensemble averaged total energy in the kicked case. Within numerical precision, the inertial subrange intermittency remains the same, whether the system is forced or decaying.
description: 14 pages, 8 figures
Optomechanical scheme for the detection of weak impulsive forces
Creators: name: Vitali, David
name: Mancini, Stefano
name: Tombesi, Paolo
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that a cooling scheme and an appropriate quantum nonstationary strategy can be used to improve the signal to noise ratio for the optomechanical detection of weak impulsive forces.
description: 4 pages, Revtex, 1 figure
Doping Dependence of the Magnetic Resonance Peak in YBa_2 Cu_3 O_{6+x}
Creators: name: Keimer, B.
name: Fong, H. F.
name: Lee, S. H.
name: Milius, D. L.
name: Aksay, I. A.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We report inelastic neutron scattering experiments on the doping dependence of the energy and spectral weight of the sharp magnetic resonance peak in YBa_2 Cu_3 O_{6+x}. These measurements also shed light on the relationship between the magnetic excitations in the normal and superconducting states.
description: (mostly corrections to figures and minor change to caption in Fig.5) 5 figures. It will be published in the proceedings of M2S-HTSC-V. It needs the elsevier style file (not included) to convert to postscript
Self-Screening Hawking Atmosphere in the Presence of a Bulk Viscosity
Creators: name: Brevik, I.
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The recent theory of 't Hooft [ Nucl. Phys. Suppl. {\bf 68}, 174 (1998)] models the black hole as a system endowed with an envelope of matter that obeys an equation of state in the form $ p=(γ-1)ρ$, and acts as a source in Einstein's equations. The present paper generalizes the 't Hooft theory so as to take into account a bulk viscosity $ζ$ in the fluid. It is shown that even a slight positive value of $ζ$ will suffice to yield complete agreement with the Hawking formula for the entropy of the black hole, if the value of the constant $γ$ takes a value that is slightly less than 4/3. The value $γ=4/3$ corresponds to a radiation fluid.
description: 12 pages, LaTeX, no figures, minor extensions of the discussion. To appear in PRD
Gonimbrasia desena Vinciguerra 2009
Creators: name: Mbata, Keith J.
name: Prins, Jurate De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Saturniidae
Gonimbrasia
Gonimbrasia desena

description: Gonimbrasia desena Vinciguerra, 2009
COMMON NAME(S): Saturniid.
SYNONYM(S): None.
IUCN STATUS: Not Evaluated (NE).
DISTRIBUTION: Known only from Zambia (endemic species).
LOCALITY IN ZAMBIA: Type locality is Kafue, in Lusaka Province.
LARVAL HOSTPLANT(S): Unknown.
SOURCES: De Prins & De Prins 2022; Vinciguerra 2009.
description: Published as part of Mbata, Keith J. & Prins, Jurate De, 2023, Annotated checklist of moths of Zambia (Insecta: Lepidoptera), pp. 1-503 in Zootaxa 5354 (1) on page 158, DOI: 10.11646/zootaxa.5354.1.1, http://zenodo.org/record/10130434
Additional file 9 of Investigating the global genomic diversity of Escherichia coli using a multi-genome DNA microarray platform with novel gene prediction strategies
Creators: name: Jackson, Scott A
name: Isha R Patel
name: Barnaba, Tammy
name: LeClerc, Joseph E
name: Cebula, Thomas A
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics

description: Authors’ original file for figure 5
Conformal description of horizon's states
Creators: name: Solodukhin, Sergey N.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The existence of black hole horizon is considered as a boundary condition to be imposed on the fluctuating metrics. The coordinate invariant form of the condition for class of spherically symmetric metrics is formulated. The diffeomorphisms preserving this condition act in (arbitrary small) vicinity of the horizon and form the group of conformal transformations of two-dimensional space ($r-t$ sector of the total space-time). The corresponding algebra recovered at the horizon is one copy of the Virasoro algebra. For general relativity in $d$ dimensions we find an effective two-dimensional theory governing the conformal dynamics at the horizon universally for any $d\geq 3$. The corresponding Virasoro algebra has central charge $c$ proportional to the Bekenstein-Hawking entropy. Identifying the zero-mode configuration we calculate $L_0$. The counting of states of this horizon's conformal field theory by means of Cardy's formula is in complete agreement with the Bekenstein-Hawking expression for the entropy of black hole in $d$ dimensions.
description: 13 pages, latex, no figures; the final version to appear in Phys. Lett. B
Reports about new model order reduction techniques, error estimators and algorithms
Creators: name: Jadhav, Onkar
name: Morelli, Umberto Emil
name: Ramlau, Ronny
name: Rozza, Gianluigi
name: Shah, Nirav Vasant
name: Stadler, Bernadett
Publisher: name: Zenodo
Year: 2019
Subjects: Model order reduction techniques, error estimators, specific algorithms for different applications

description: The main goal of the ROMSOC project is to develop new modelling, simulation and optimization (MSO) techniques
 and associated software to handle real-world scenarios which are relevant for industrial applications in
 different application areas. The required full order models (FOM) involve coupled multiphysics problems for
 which standard numerical methods used to compute accurate approximated solutions demand high computational
 costs and usually fail to provide real-time simulation tools. Hence, the use of reduced order models
 (ROM) is a must for the design of computational tools, which are potentially applicable in real-world industrial
 problems. The report briefly describes ROM approaches, error estimators and algorithms for different
 applications developed within the projects of ESR1, ESR6, ESR8 and ESR10.
description: Project Deliverable (D3.1)
Canonical quantization of two-dimensional gravity
Creators: name: Vergeles, S. N.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A canonical quantization of two-dimensional gravity minimally coupled to real scalar and spinor Majorana fields is presented. The physical state space of the theory is completely described and calculations are also made of the average value of the metric tensor relative to states close to the ground state
description: 26 pages, LaTex
NFC TEXNOLOGIYASINI ELEKTRON HUJJATLARNI IMZOLASHDA QO'LLASH
Creators: name: Muminova, Sunbula
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada NFC texnologiyasini Mobil qurilmalardagi hujjatlarni imzolashda qo’llash afzalliklari ko’rib chiqilgan. NFCning ishlash prinsipi, elektron imzolash usullari, NFC texnologiyasini qo’llash samaradorligi va erishish mumkin bo’lgan natijalari haqida ma’lumotlar keltirilgan.