Navegação Ciências Exatas e da Terra por Título
Resultados 2216-2235 de 5964
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Giant magnetoresistance of (001)fe/(001)cr magnetic superlattices
(1988) [Artigo de periódico]We have studied the magnetoresistance of (001)Fe/(001)Cr superlattices prepared by molecular-beam epitaxy. A huge magnetoresistance is found in superlattices with thin Cr layers: For example, with tCr=9 Å, at T =4.2 K, the ... -
Gibi digital : uma atividade de matemática desenvolvida cooperativamente no espaço do Facebook
(2012) [Artigo de periódico]O artigo é o relato de uma atividade de matemática proposta no espaço de aprendizagem digital escolhido pelos estudantes, do IFRS - Campus Osório, como o Facebook, em 2012. A atividade tem a finalidade de mobilizar os ... -
Giombo persimmon seed (GPS) an alternative adsorbent for the removal Toluidine Blue dye from aqueous solutions
(2016) [Artigo de periódico]Giombo persimmon seeds (GPS) (Diospyrus kaki L) were used as a novel low-cost adsorbent for the removal of Toluidine Blue dye (TB) from aqueous solution by batch contact adsorption mode at 25°C. The GPS adsorbent was ... -
Glass behavior and the h-t phase diagram of the high-tc ceramic superconductors yba2cu3o7, euba2cu3o7 and gdba2cu3o7
(1989) [Artigo de periódico]We report systematic field-cooled (PC) and zero-field-cooled (ZPC) diamagnetic susceptibility measurements in polycrystalline samples of the high-Tc oxide superconductors RBa2Cu30 7, where R =Y, Eu, or Gd. We focus mainly ... -
Glassy behavior of two-dimensional stripe-forming systems
(2013) [Artigo de periódico]We study two-dimensional frustrated but nondisordered systems applying a replica approach to a stripe-forming model with competing interactions. The phenomenology of the model is representative of several well-known systems, ... -
Glassy dynamics and hysteresis in a linear system of orientable hard rods
(2011) [Artigo de periódico]We study the dynamics of a one-dimensional fluid of orientable hard rectangles with a non-coarse-grained microscopic mechanism of facilitation. The length occupied by a rectangle depends on its orientation, which is a ... -
Global baryon number conservation encoded in net-proton fluctuations measured in Pb–Pb collisions at √sNN=2.76 TeV
(2020) [Artigo de periódico]Experimental results are presented on event-by-event net-proton fluctuation measurements in Pb–Pb collisions at √sNN=2.76 TeV, recorded by the ALICE detector at the CERN LHC. These measurements have as their ultimate goal ... -
Globally coupled multiattractor maps : mean field dynamics controlled by the number of elements
(1999) [Artigo de periódico]We report an investigation of a system of N globally coupled maps able to support multiattractors. For these systems the mean field dynamics is controlled by the number of elements in the initial partition of each basin ... -
Globally synchronized oscillations in complex cyclic games
(2014) [Artigo de periódico]The rock-paper-scissors game and its generalizations with S > 3 species are well-studied models for cyclically interacting populations. Four is, however, the minimum number of species that, by allowing other interactions ... -
Global patterns of prescription pain medication usage in disorders of gut–brain interactions
(2023) [Artigo de periódico]Background: Forty percent of individuals globally meet Rome IV criteria for a disorder of gut– brain interaction (DGBI). The global burden of pain across these disorders has not been characterized.Methods: Our study included ... -
Global polarization of Λ and Λ hyperons in Pb-Pb collisions at √sNN = 2.76 and 5.02 TeV
(2020) [Artigo de periódico]The global polarization of the and hyperons is measured for Pb-Pb collisions at √sNN = 2.76 and 5.02 TeV recorded with the ALICE at the Large Hadron Collider (LHC). The results are reported differentially as a function of ... -
Globular clusters in the inner Galaxy classified from dynamical orbital criteria
(2020) [Artigo de periódico]Globular clusters (GCs) are the most ancient stellar systems in the Milky Way. Therefore, they play a key role in the understanding of the early chemical and dynamical evolution of our Galaxy. Around 40 per cent of them ... -
Globular cluster streams as galactic high-precision scales : the poster child Palomar 5
(2015) [Artigo de periódico]Using the example of the tidal stream of the Milky Way globular cluster Palomar 5 (Pal 5), we demonstrate how observational data on tidal streams can be efficiently reduced in dimensionality and modeled in a Bayesian ... -
Globular clusters within five grade of the galactic center
(1998) [Artigo de periódico]In the recent years we have concentrated efforts to collect Colour-Magnitude Diagrams of the globular clusters projected in the central parts of the Galaxy. So far we were able to gather photometric data in the V, I and ... -
Globular cluster system and Milky Way properties revisited
(2006) [Artigo de periódico]Aims. Updated data of the 153 Galactic globular clusters are used to readdress fundamental parameters of the Milky Way, such as the distance of the Sun to the Galactic centre, the bulge and halo structural parameters, and ... -
Globular cluster systems of relic galaxies
(2021) [Artigo de periódico]We analyse the globular cluster (GC) systems of a sample of 15 massive, compact early-type galaxies (ETGs), 13 of which have already been identified as good relic galaxy candidates on the basis of their compact morphologies, ... -
Glutamic acid decarboxylase antibodies are indicators of the course, but not of the on-set, of diabetes in middle-aged adults : the atherosclerosis risk in communities study
(2007) [Artigo de periódico]To efficiently examine the association of glutamic acid decarboxylase antibody (GADA) positivity with the onset and progression of diabetes in middle-aged adults, we performed a case-cohort study representing the ~9-year ... -
Glutathione peroxidase induction protects Saccharomyces cerevisiae sod1deltasod2delta double mutants against oxidative damage
(2004) [Artigo de periódico]Saccharomyces cerevisiae mutants deficient in superoxide dismutase genes (sod1∆, sod2∆and the double mutant) were subjected to H2O2 stress in the stationary phase. The highest sensitivity was observed in the sod2∆mutant, ... -
Gödel e Einstein : e quando o tempo não resiste à amizade?
(2006) [Artigo de periódico]Algumas amizades resistem ao teste do tempo. Mas o que dizer quando o próprio tempo não resiste a uma amizade? Em 1949 Kurt Gödel publicou um artigo no qual apresentava uma solução exata das equações de Einstein - que veio ... -
Gold nanoparticles inhibit steroid-insensitive asthma in mice preserving histone deacetylase 2 and NRF2 pathways
(2022) [Artigo de periódico]Background: Gold nanoparticles (AuNPs) can inhibit pivotal pathological changes in experimental asthma, but their effect on steroid-insensitive asthma is unclear. The current study assessed the effectiveness of nebulized ...
