Results 131 to 140 of about 954,000 (309)

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

Abundance Gradients in the Galaxy

The Astrophysical Journal Supplement Series, 2006
Six H II regions at galactocentric distances of R = 10-15 kpc have been observed in the far-IR emission lines of [O III] (52 μm, 88 μm), [N III] (57 μm), and [S III] (19 μm) using the Kuiper Airborne Observatory. These observations have been combined with Very Large Array radio continuum observations of these sources to determine the abundances of O++,
Alexander L. Rudolph, Michel Fich, Gwendolyn R. Bell, Travis Norsen, Janet P. Simpson, Michael R. Haas, Edwin F. Erickson   +6 more
openaire   +1 more source

Chemical abundances in Seyfert galaxies VI. Empirical abundance calibration

, 2021
9 pages, 7 figures, accepted for publication in ...
Dors, L, O.
openaire   +2 more sources

DIRECT OXYGEN ABUNDANCES FOR LOW-LUMINOSITY LVL GALAXIES [PDF]

The Astrophysical Journal, 2012
67 pages, 9 figures, 9 tables; accepted for publication in ...
Berg, Danielle A., Skillman, Evan D., Marble, Andrew R., van Zee, Liese, Engelbracht, Charles W., Lee, Janice C., Kennicutt, Robert C., Jr., Calzetti, Daniela, Dale, Daniel A., Johnson, Benjamin D.   +9 more
openaire   +3 more sources

The Heavy Metal Survey: The Evolution of Stellar Metallicities, Abundance Ratios, and Ages of Massive Quiescent Galaxies since z ∼ 2

The Astrophysical Journal
We present the elemental abundances and ages of 19 massive quiescent galaxies at z ∼ 1.4 and z ∼ 2.1 from the Keck Heavy Metal Survey. The ultradeep LRIS and MOSFIRE spectra were modeled using a full-spectrum stellar population fitting code with variable
Aliza G. Beverage, Mariska Kriek, Katherine A. Suess, Charlie Conroy, Sedona H. Price, Guillermo Barro, Rachel Bezanson, Marijn Franx, Brian Lorenz, Yilun Ma, Lamiya A. Mowla, Imad Pasha, Pieter van Dokkum, Daniel R. Weisz   +13 more
doaj   +1 more source

Out There No One Has a Right to Die

Bioethics, EarlyView.
ABSTRACT The eventual goal of space exploration is to colonize exoplanets and their moons outside our solar system. This is a dangerous and immoral endeavour. The extraterrestrial life forms encountered would be hostile, vulnerable or both, and the descendants of the original pioneers would be involuntarily exposed to hazardous conditions and ...
Matti Häyry
wiley   +1 more source

Chemical Abundances of Planetary Nebulae in M33

, 2004
Using spectroscopic data presented in Magrini et al. (2003), we have analyzed with the photoionization code CLOUDY 94.00 (Ferland et al. 1998) 11 Planetary Nebulae belonging to the spiral galaxy M 33. Central star temperatures and nebular parameters have
A. Mampaso, Ambartsumian, Armsdorfer, Che, Corradi, Costa, Dufour, Exter, Ferland, Gurzadyan, Henry, Howard, Iben, Jacoby, Jacoby, Jacoby, Kingsburgh, L. Magrini, Leisy, M. Perinotto, Magrini, Mampaso, Maran, Morisset, Peimbert, Perinotto, Phillips, R. L. M. Corradi, Rauch, Richer, Stasinska, Vílchez, Walsh, Walsh   +33 more
core   +1 more source

Winter‐active spiders (Clubiona) have a hyperactive antifreeze protein with a unique beta‐solenoid fold

The FEBS Journal, EarlyView.
Antifreeze proteins from winter‐active spiders were purified using their affinity for ice. After LC–MSMS characterization, corresponding transcripts were identified. The antifreeze protein folds as a β‐solenoid with a large flat ice‐binding site on one surface and can bind to ice crystals and prevent their growth at −4 °C.
Laurie A. Graham, Stano Pekár, Ina M. Hainer, Peter L. Davies   +3 more
wiley   +1 more source

Evidence of Gaia Enceladus Experiencing at Least Two Passages around the Milky Way

The Astrophysical Journal Letters
One of the major recent breakthroughs has been the discovery of the last major merger to happen in the history of the Milky Way. Around 10 Gyr ago, the galaxy Gaia Enceladus with an estimated ∼10% of the Milky Way mass, fell into the potential of our ...
Ása Skúladóttir, Heitor Ernandes, Diane K. Feuillet, Alice Mori, Sofia Feltzing, Romain E. R. Lucchesi, Paola Di Matteo   +6 more
doaj   +1 more source

The nature of high [O iii]88 μ m/[C ii]158 μm galaxies in the epoch of reionization: Low carbon abundance and a top-heavy IMF? [PDF]

, 2022
Harley Katz, Joakim Rosdahl, Taysun Kimm, Thibault Garel, J. Blaizot, Martin G. Haehnelt, L. Michel-Dansac, Sergio Martin-Alvarez, Julien Devriendt, Adrianne Slyz, Romain Teyssier, Pierre Ocvirk, Nicolas Laporte, Richard S. Ellis   +13 more
openalex   +1 more source