Results 71 to 80 of about 63,862 (294)

Constraining Extra Mixing During the Main Sequence: Whatever Depletes Lithium Does Not Touch Beryllium

The Astrophysical Journal
Measurements of lithium (Li) abundances in solar-type stars have shown that standard models of stellar evolution are incapable of explaining the observed depletion as a function of stellar age.
Henrique Reggiani, Jhon Yana Galarza, Diego Lorenzo-Oliveira, Sofia Covarrubias, Micaela Oyague, Rita Valle, Julio Chanamé   +6 more
doaj   +1 more source

This Is Not a Myeloproliferative Neoplasm…

Pediatric Blood &Cancer, EarlyView.
Stephanie Juané Kennedy
wiley   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

NGC 1856: Using Machine Learning Techniques to Uncover Detailed Stellar Abundances from MUSE Data

The Astronomical Journal
We present the first application of the novel approach based on data-driven machine learning methods applied to Multi-Unit Spectroscopic Explorer (MUSE) field data to derive stellar abundances of star clusters.
Randa Asa’d, S. Hernandez, J. M John, M. Alfaro-Cuello, Z. Wang, A. As’ad, A. Vasini, F. Matteucci   +7 more
doaj   +1 more source

Lithium abundance evolution in open clusters: Hyades, NGC752, and M67

, 2013
Mixing mechanisms bring the Li from the base of the convective zone to deeper and warmer layers where it is destroyed. These mechanisms are investigated by comparing observations of Li abundances in stellar atmospheres to models of stellar evolution ...
Castro, Matthieu, Nascimento Jr, José Dias do, Pace, Giancarlo   +2 more
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

About trend in zinc stellar abundances with metallisity

Odessa Astronomical Publications, 2007
We have carried out investigation of zinc abundance behavior in wide range of stellar metallicities from 0 to -5. It has been determined zinc abundance using our Zn atom model and NonLTE calculation method.
U. Sh. Bayazitov, F. Thevenin
doaj   +1 more source

Satellite abundances around bright isolated galaxies

, 2012
We study satellite galaxy abundances in SDSS by counting photometric galaxies around isolated bright primaries. We present results as a function of the luminosity, stellar mass and colour of the satellites, and of the stellar mass and colour of the ...
Abazajian, Aihara, Alshino, Andreon, Ann, Benson, Berlind, Blanton, Blanton, Bode, Bower, Boylan-Kolchin, Boylan-Kolchin, Boylan-Kolchin, Boylan-Kolchin, Bullock, Capak, Chabrier, Chen, Christlein, Cole, Conroy, Conroy, Conroy, Cooray, Croton, Cunha, de Filippis, De Lucia, De Propris, Driver, Driver, Fall, Font, Goto, Grebel, Grebel, Grebel, Grebel, Guo, Guo, Guo, Hansen, Henriques, Henriques, Holmberg, Jing, Jing, Kang, Kauffmann, Kauffmann, Kauffmann, Kauffmann, Klypin, Koposov, Koposov, Kravtsov, Lacey, Lares, Li, Liu, Lorrimer, Lovell, Ma, Macciò, Mandelbaum, Mandelbaum, Mandelbaum, Montero-Dorta, Moore, Moore, More, Moster, Navarro, Navarro, Nierenberg, Paolillo, Peacock, Phillipps, Popesso, Popesso, Prada, Prescott, Ross, Sales, Sales, Sales, Sargent, Scarlata, Schechter, Scoville, Seljak, Sersic, Simard, Simon, Simon, Simon D. M. White, Skibba, Smith, Somerville, Somerville, Spergel, Spergel, Springel, Springel, Tal, Tal, Tasitsiomi, Tollerud, Tollerud, Vader, Vale, Walsh, Wang, Weinmann, Weinmann, Weinmann, Wenting Wang, Westra, White, White, Willman, Yang, Yang, York, Yoshida, Zandivarez, Zaritsky, Zaritsky, Zavala, Zhao, Zheng   +131 more
core   +1 more source

Stellar model atmospheres with abundance stratification [PDF]

Astronomy & Astrophysics, 2009
Context. Atomic diffusion is believed to be an important physical process in the atmospheres of several types of stars. Stellar atmospheres, including the stratification of the elements due to diffusion, are then needed to properly compare theoretical results to observations for such stars. Aims.
Leblanc, Francis, Monin, D., Hui-Bon-Hoa, A., Hauschildt, P. H.   +3 more
openaire   +3 more sources