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Search: (WFRF:(Espinoza C. M.))

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1.
  • Thomas, HS, et al. (author)
  • 2019
  • swepub:Mat__t
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  • Bousquet, J, et al. (author)
  • Nrf2-interacting nutrients and COVID-19: time for research to develop adaptation strategies
  • 2020
  • In: Clinical and translational allergy. - : Wiley. - 2045-7022. ; 10:1, s. 58-
  • Journal article (peer-reviewed)abstract
    • There are large between- and within-country variations in COVID-19 death rates. Some very low death rate settings such as Eastern Asia, Central Europe, the Balkans and Africa have a common feature of eating large quantities of fermented foods whose intake is associated with the activation of the Nrf2 (Nuclear factor (erythroid-derived 2)-like 2) anti-oxidant transcription factor. There are many Nrf2-interacting nutrients (berberine, curcumin, epigallocatechin gallate, genistein, quercetin, resveratrol, sulforaphane) that all act similarly to reduce insulin resistance, endothelial damage, lung injury and cytokine storm. They also act on the same mechanisms (mTOR: Mammalian target of rapamycin, PPARγ:Peroxisome proliferator-activated receptor, NFκB: Nuclear factor kappa B, ERK: Extracellular signal-regulated kinases and eIF2α:Elongation initiation factor 2α). They may as a result be important in mitigating the severity of COVID-19, acting through the endoplasmic reticulum stress or ACE-Angiotensin-II-AT1R axis (AT1R) pathway. Many Nrf2-interacting nutrients are also interacting with TRPA1 and/or TRPV1. Interestingly, geographical areas with very low COVID-19 mortality are those with the lowest prevalence of obesity (Sub-Saharan Africa and Asia). It is tempting to propose that Nrf2-interacting foods and nutrients can re-balance insulin resistance and have a significant effect on COVID-19 severity. It is therefore possible that the intake of these foods may restore an optimal natural balance for the Nrf2 pathway and may be of interest in the mitigation of COVID-19 severity.
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  • Abdalla, H., et al. (author)
  • TeV Emission of Galactic Plane Sources with HAWC and HESS
  • 2021
  • In: Astrophysical Journal. - : Institute of Physics Publishing (IOPP). - 0004-637X .- 1538-4357. ; 917:1
  • Journal article (peer-reviewed)abstract
    • The High Altitude Water Cherenkov (HAWC) observatory and the High Energy Stereoscopic System (H.E.S.S.) are two leading instruments in the ground-based very-high-energy gamma-ray domain. HAWC employs the water Cherenkov detection (WCD) technique, while H.E.S.S. is an array of Imaging Atmospheric Cherenkov Telescopes (IACTs). The two facilities therefore differ in multiple aspects, including their observation strategy, the size of their field of view, and their angular resolution, leading to different analysis approaches. Until now, it has been unclear if the results of observations by both types of instruments are consistent: several of the recently discovered HAWC sources have been followed up by IACTs, resulting in a confirmed detection only in a minority of cases. With this paper, we go further and try to resolve the tensions between previous results by performing a new analysis of the H.E.S.S. Galactic plane survey data, applying an analysis technique comparable between H.E.S.S. and HAWC. Events above 1 TeV are selected for both data sets, the point-spread function of H.E.S.S. is broadened to approach that of HAWC, and a similar background estimation method is used. This is the first detailed comparison of the Galactic plane observed by both instruments. H.E.S.S. can confirm the gamma-ray emission of four HAWC sources among seven previously undetected by IACTs, while the three others have measured fluxes below the sensitivity of the H.E.S.S. data set. Remaining differences in the overall gamma-ray flux can be explained by the systematic uncertainties. Therefore, we confirm a consistent view of the gamma-ray sky between WCD and IACT techniques.
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9.
  • Arndt, D. S., et al. (author)
  • STATE OF THE CLIMATE IN 2017
  • 2018
  • In: Bulletin of The American Meteorological Society - (BAMS). - : American Meteorological Society. - 0003-0007 .- 1520-0477. ; 99:8, s. S1-S310
  • Research review (peer-reviewed)
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10.
  • Abdo, A. A., et al. (author)
  • FERMI LARGE AREA TELESCOPE OBSERVATIONS OF THE VELA PULSAR
  • 2009
  • In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 696:2, s. 1084-1093
  • Journal article (peer-reviewed)abstract
    • The Vela pulsar is the brightest persistent source in the GeV sky and thus is the traditional first target for new gamma-ray observatories. We report here on initial Fermi Large Area Telescope observations during verification phase pointed exposure and early sky survey scanning. We have used the Vela signal to verify Fermi timing and angular resolution. The high-quality pulse profile, with some 32,400 pulsed photons at E >= 0.03 GeV, shows new features, including pulse structure as fine as 0.3 ms and a distinct third peak, which shifts in phase with energy. We examine the high-energy behavior of the pulsed emission; initial spectra suggest a phase-averaged power-law index of Gamma = 1.51(-0.04)(+0.05) with an exponential cutoff at E-c = 2.9 +/- 0.1 GeV. Spectral fits with generalized cutoffs of the form e(-(E/Ec)b) require b <= 1, which is inconsistent with magnetic pair attenuation, and thus favor outer-magnetosphere emission models. Finally, we report on upper limits to any unpulsed component, as might be associated with a surrounding pulsar wind nebula.
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  • Result 1-10 of 66
Type of publication
journal article (62)
conference paper (2)
research review (1)
Type of content
peer-reviewed (65)
Author/Editor
Grondin, M. -H (8)
Lemoine-Goumard, M. (8)
Reimer, A. (8)
Reimer, O. (8)
Ohsugi, T. (7)
Longo, F. (7)
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Paneque, D. (7)
Torres, D. F. (7)
Tibaldo, L. (7)
de Palma, F. (7)
Kerr, M. (7)
Johnston, S. (7)
Barbiellini, G. (7)
Bellazzini, R. (7)
Bruel, P. (7)
Caliandro, G. A. (7)
Cameron, R. A. (7)
Caraveo, P. A. (7)
Cecchi, C. (7)
Chiang, J. (7)
Ciprini, S. (7)
Cohen-Tanugi, J. (7)
Favuzzi, C. (7)
Focke, W. B. (7)
Fusco, P. (7)
Gargano, F. (7)
Giglietto, N. (7)
Giordano, F. (7)
Guiriec, S. (7)
Johannesson, G. (7)
Loparco, F. (7)
Lovellette, M. N. (7)
Lubrano, P. (7)
Mazziotta, M. N. (7)
Michelson, P. F. (7)
Mizuno, T. (7)
Monzani, M. E. (7)
Morselli, A. (7)
Nuss, E. (7)
Orlando, E. (7)
Pesce-Rollins, M. (7)
Piron, F. (7)
Porter, T. A. (7)
Raino, S. (7)
Siskind, E. J. (7)
Spinelli, P. (7)
Thayer, J. B. (7)
Wood, K. S. (7)
Reposeur, T. (7)
Takahashi, H. (7)
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Karolinska Institutet (23)
Chalmers University of Technology (12)
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Linnaeus University (9)
Stockholm University (8)
Lund University (5)
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Royal Institute of Technology (3)
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Language
English (66)
Research subject (UKÄ/SCB)
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Medical and Health Sciences (5)
Engineering and Technology (4)
Social Sciences (1)

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