Listar Ciencias Exactas y Naturales por título
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K0S K0S and K0S K± femtoscopy in pp collisions at √s = 5.02 TeV and 13 TeV
(2022) [Artículo de periódico]Femtoscopic correlations with the particle pair combinations K0 SK0 S and K0 SK± are studied in pp collisions at √s = 5.02 and 13 TeV by the ALICE experiment. At both energies, boson source parameters are extracted for ... -
K∗(892)0 and φ(1020) meson production at high transverse momentum in pp and Pb-Pb collisions at √ sNN = 2.76 TeV
(2017) [Artículo de periódico]The production of K (892)0 and φ(1020) mesons in proton-proton (pp) and lead-lead (Pb-Pb) collisions at √ sNN = 2.76 TeV has been analyzed using a high luminosity data sample accumulated in 2011 with the ALICE detector at ... -
K∗(892)0 and φ(1020) production at midrapidity in pp collisions at √s=8 TeV
(2020) [Artículo de periódico]The production of K∗(892)0 and φ(1020) in pp collisions at √s = 8 TeV was measured by using Run 1 data collected by the ALICE collaboration at the CERN Large Hadron Collider (LHC). The pT-differential yields d2N/dyd pT in ... -
Kaon femtoscopy in Pb-Pb collisions at √sNN = 2.76 TeV
(2017) [Artículo de periódico]We present the results of three-dimensional femtoscopic analyses for charged and neutral kaons recorded by ALICE in Pb-Pb collisions at √ sNN = 2.76 TeV. Femtoscopy is used to measure the space-time characteristics of ... -
Kaon-nucleon scattering in an extended cloudy bag model
(1984) [Artículo de periódico]We describe low-energy kaon-nucleon scattering by generalizing the cloudy bag model (CBM) to SU(3) chiral symmetry. We restrict our attention to I = 0, s-wave scattering. We obtain a reasonable fit to both the Zn cross ... -
Kaon–proton strong interaction at low relative momentum via femtoscopy in Pb–Pb collisions at the LHC
(2021) [Artículo de periódico]In quantum scattering processes between two particles, aspects characterizing the strong and Coulomb forces can be observed in kinematic distributions of the particle pairs. The sensitivity to the interaction potential ... -
Karl A. Wittfogel contra a geopolítica : uma leitura sobre o materialismogeográfico
(2020) [Artículo de periódico]Esse artigo analisa a posição teórica formulada por Karl August Wittfogel em seu artigo “Geopolítica, materialismo geográfico e marxismo” publicado no ano de 1929. Nesse texto fundamental, o autor ataca a posição de método ... -
K band SINFONI spectra of two z ~ 5 submillimeter galaxy systems : upper limits to the unobscured star formation from [O II] optical emission line searches
(2016) [Artículo de periódico]We present deep SINFONI K-band integral field spectra of two submillimeter galaxy systems (SMG): BR 1202-0725 and J1000+0234, at z = 4:69 and 4:55; respectively. Spectra extracted for each object in the two systems do not ... -
Kepler and TESS observations of PG 1159-035
(2022) [Artículo de periódico]PG 1159-035 is the prototype of the PG 1159 hot (pre-)white dwarf pulsators. This important object was observed during the Kepler satellite K2 mission for 69 days in 59 s cadence mode and by the TESS satellite for 25 days ... -
Kinectics of ion-induced transformations in β-NiAl thin films as characterized by in situ electrical resistivity measurements
(1998) [Artículo de periódico]In situ electrical resistivity of thin film B-NiAl at 77 K under 120 keV Ar1 irradiation has been measured as a function of the total dose for film thickness of 25, 37.5, 50, 62.5, and 75 nm. A qualitative change was ... -
Kinematic dynamo in random flows
(1990) [Artículo de periódico]A existência de um efeito de um dínamo rápido é demonstrado para a equação cinemática de magneto-hidrodinâmico com dependência estocástica nos fluxos aleatórios. -
Kinematics and modeling of the inner region of M 83?
(2009) [Artículo de periódico]Two-dimensional kinematics of the central region of M 83 (NGC 5236) were obtained through three-dimensional NIR spectroscopy with the Gemini South telescope. The spatial region covered by the integral field unit (∼ 5 ×13 ... -
Kinematics and physical properties of southern interacting galaxies : the minor merger AM 2306–721
(2008) [Artículo de periódico]We present an observational study about the effects of the interactions in the kinematics, stellar population and abundances of the components of the galaxy pair AM2306-721. Rotation curves for the main and companion ... -
Kinematics of the central regions of NGC 1672
(1999) [Artículo de periódico]We present the detailed velocity field of the central 2 kpc of the LINER galaxy NGC 1672. The iso- velocity map shows a rotational pattern with a velocity gradient of 50 km s-ˡ arcsec-ˡ in the inner 6" (1"≈ 70 pc), indicating ... -
Kinematics with Gaia DR2 : the force of a dwarf
(2019) [Artículo de periódico]We use Gaia DR2 astrometric and line-of-sight velocity information combined with two sets of distances obtained with a Bayesian inference method to study the 3D velocity distribution in the Milky Way disc. We search for ... -
Kinetic model for a polmer in one dimension
(1995) [Artículo de periódico]We consider a model for a directed polymer on a one-dimensional lattice of width 2, with attractive interactions between monomers that occupy first-neighbor sites on the lattice and are not consecutive along the chain. We ... -
Kinetic theory of magnetized dusty plasmas with dust particles charged by collisional processes and by photoionization
(2012) [Artículo de periódico]In this work, we detail the derivation of a plasma kinetic theory leading to the components of the dielectric tensor for a magnetized dusty plasma with variable charge on the dust particles, considering that the dust ... -
KIR gene content in amerindians indicates influence of demographic factors
(2013) [Artículo de periódico]Although the KIR gene content polymorphism has been studied worldwide, only a few isolated or Amerindian populations have been analyzed. This extremely diverse gene family codifies receptors that are expressed mainly in ... -
Kn scattering in the cloudy bag model : s, p and d waves
(1985) [Artículo de periódico]s-, p-, and d-wave KN phase shifts are calculated with the cloudy bag model (CBM). The results are in qualitative agreement with phase-shift analysis, except in those partial waves where exotic resonances are claimed to ... -
Kondo-like behavior and GMR effect in granular Cu90Co10 microwires
(2017) [Artículo de periódico]We observed a significant increase of the giant magnetoresistance (GMR) effect (up to 32% after the adequate annealing) and Kondo-like behavior in Cu90Co10 glass-coated microwires. Observed enhancement of the GMR effect ...