Results 61 to 70 of about 7,914 (245)

Effect of Salinity Stress on Gut–Brain–Gonad Axis in the Red‐Eared Slider (Trachemys scripta elegans)

Integrative Zoology, EarlyView.
The increase in salinity leads to changes in the gut microbiota and metabolites of Trachemys scripta elegans, affecting the synthesis and secretion of neurotransmitters or precursors, which can inhibit the secretion of reproductive hormones and affect the self‐renewal and differentiation process of spermatogonial stem cells.
Qiongyu Zhang, Na Li, Xue Tang, Hanru Chen, Meiling Hong, Li Ding   +5 more
wiley   +1 more source

Spatially resolved spectroscopy of faint star-forming galaxies & their environments in the high redshift universe [PDF]

, 2011
This thesis is concerned with the spectroscopic observations of distant galaxies, 1 < z < 5. The galaxies presented here are intrinsically faint such that their ux is dominated by ordinary star formation rather than galaxy-galaxy merging and/or ...
Hurley, Mairéad
core  

Evidence for multiple crossings and stripping of Gaia-Enceladus/Sausage across the Milky Way

Astronomy & Astrophysics
Context. The accretion of Gaia-Enceladus/Sausage (GES) onto the Milky Way (MW) is one of the most prominent features of the Galactic halo revealed by the combination of the Gaia satellite and large spectroscopic surveys.
Berni L., Palla M., Magrini L., Spina L.
doaj   +1 more source

Response of Fecal Bacteria and Fungi to Tannin‐Rich Diets in Sika Deer (Cervus nippon): Evidence from Both Feeding Experiments and Field Investigations

Integrative Zoology, EarlyView.
Feeding with tannin‐rich diets altered the fecal microbial composition and increased the relative abundance of tannin‐degrading microbes. We hypothesize that fecal bacteria and fungi may play important roles in helping herbivores adapt to tannin‐rich diets but respond to different tannin concentrations varies.
Di Zhu, Feng Wu, Peiying Wen, Haiyang Gao, Xiaoran Hao, Hongfang Wang   +5 more
wiley   +1 more source

Exploring the Gas-phase Metallicity Gradients of Star-forming Galaxies at Cosmic Noon

The Astrophysical Journal
We explore the relationships between the [O/H] gas-phase metallicity radial gradients and multiple galaxy properties for 238 star-forming galaxies at 0.6 < z < 2.6 selected from the CANDELS Ly α Emission at Reionization survey with stellar mass $8.5\lt ...
Yingjie Cheng, Mauro Giavalisco, Raymond C. Simons, Zhiyuan Ji, Darren Stroupe, Nikko J. Cleri   +5 more
doaj   +1 more source

Subsystems of the Galactic halo, their structures and compositions

Odessa Astronomical Publications, 2017
It is shown that general populations of globular clusters and metal-poor field stars are components at least of three subsystems occupying different volumes in the Galaxy.
V. A. Marsakov, T. V. Borkova
doaj   +1 more source

Inhibition of Ornithine Decarboxylase 1 Mitigates Denervation‐Induced Muscle Atrophy by Suppressing Proteolysis and Preserving Muscle Stem Cell Homeostasis

Cell Proliferation, EarlyView.
Polyamine metabolism is innervation responsive and involved in denervation‐induced muscle atrophy. Inhibition of polyamine metabolism attenuates muscle atrophy by restraining proteolysis and preserving MuSCs homeostasis. Denervation‐induced activation of FAP‐derived FGF7 drives premature MuSCs activation, while DFMO suppresses this paracrine cue to ...
Mingming Zhang, Feifan Chang, Siliang Ge, Fuming Cao, Pincong Fu, Haobo Zhang, Ming Chen, Yi Li, Peifu Tang, Pengbin Yin   +9 more
wiley   +1 more source

Chemical abundances and ionizing clusters of H II regions in the LINER galaxy NGC 4258 [PDF]

, 2000
This is an electronic version of an article published in Monthly Notices of the Royal Astronomical Society. Díaz, A.I., Castellanos, M., Terlevich, E. and M.L. García-Vargas.
García-Vargas, María Luisa, Castellanos, Marcelo, Terlevich, Elena, Díaz Beltrán, Ángeles Isabel   +3 more
core   +1 more source

TYC 170–1218–1: A new r-process-enhanced extremely metal-poor star, rich in Th.★

Astronomy & Astrophysics
Context. Extremely metal-poor (EMP) stars are formed from gas clouds enriched by one or a few supernova explosions belonging to the first stellar generation and this very limited number of sources of metal enrichment is suitable to produce peculiar ...
Caffau E., Bonifacio P., Sbordone L., Monaco L., Alazzawi J., Spite M., François P., Mucciarelli A.   +7 more
doaj   +1 more source

Abundance jump in the inner bulges of galaxies [PDF]

Symposium - International Astronomical Union, 1993
The metallicity difference of about an order between the kinematically decoupled nuclei and the surrounding bulges is found in 3 spiral galaxies possessing an axisymmetric potential in their centres.
openaire   +1 more source