Results 71 to 80 of about 602,274 (295)

The Star Formation History of the Large Magellanic Cloud [PDF]

, 2009
We present the first-ever global, spatially-resolved reconstruction of the star formation history (SFH) of the Large Magellanic Cloud (LMC), based on the application of our StarFISH analysis software to the multiband photometry of twenty million of its ...
Alcock, Bekki, Besla, Bica, Brocato, Carrera, Cole, Da Costa, Da Costa, Dennis Zaritsky, Dirsch, Ferraro, Gardiner, Geha, Grocholski, Harris, Harris, Hilker, Hill, Holtzman, Jason Harris, Johnson, Kallivayalil, Kim, Lilly, Madau, Meixner, Mizuno, Mucciarelli, Nikolaev, Nikolaev, Olsen, Olsen, Payne-Gaposhkin, Sagar, Sagar, Schinnerer, Schwarzschild, Smecker-Hane, Tsujimoto, Vallenari, Vallenari, van den Bergh, van der Marel, van der Marel, Will, Woo, Zaritsky, Zaritsky, Zaritsky, Zaritsky, Zaritsky, Zaritsky   +52 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Cavitation nanobubbles enhancing the flotation of microfine ilmenite and associated fundamentals

Ultrasonics Sonochemistry
Nanobubbles (NBs) have been extensively utilized in mineral flotation, acting as secondary collectors to improve flotation efficiency. However, the fundamental interaction mechanisms between NBs and flotation collector remain unclear.
Fanfan Zhang, Wanchen Dong, Huijie Cai, Huaiyao Zhang, Xiangbo Fan, Yamin Kang, Yijun Cao, Guixia Fan   +7 more
doaj   +1 more source

Untangling the Sources of Abundance Dispersion in Low-metallicity Stars

The Astrophysical Journal, 2023
We measure abundances of 12 elements (Na, Mg, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni) in a sample of 86 metal-poor (−2 ≲ [Fe/H] ≲ −1) subgiant stars in the solar neighborhood.
Emily J. Griffith, Jennifer A. Johnson, David H. Weinberg, Ilya Ilyin, James W. Johnson, Romy Rodriguez-Martinez, Klaus G. Strassmeier   +6 more
doaj   +1 more source

Enrichment of the r-process Element Europium in the Galactic Halo [PDF]

, 1998
We investigate the enrichment of europium, as a representative of r-process elements, in the Galactic halo. In present chemical evolution models, stars are assumed to be formed through shock processes by supernovae (SNe).
Barbuy B., Edvardsson B., Graton R. G., Hillebrandt W., Magain P., Schaller G., Shinya Wanajo, Takahashi K., Yuhri Ishimaru   +8 more
core   +3 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

A chemical evolution model for galaxy clusters [PDF]

, 2001
We develop a toy-model for the chemical evolution of the intracluster medium, polluted by the galactic winds from elliptical galaxies. The model follows the "galaxy formation history" of cluster galaxies, constrained by the observed luminosity function ...
Chiosi, C., Moretti, A., Portinari, L.
core   +1 more source

THE DEARTH OF CHEMICALLY ENRICHED WARM-HOT CIRCUMGALACTIC GAS [PDF]

The Astrophysical Journal, 2010
This is the pre-published version harvested from ArXiv.
Yao, Y, Wang, QD, Penton, SV, Tripp, TM, Shull, JM, Stocke, JT   +5 more
openaire   +3 more sources

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

The Chemical Enrichment of the Milky Way Disk Evaluated Using Conditional Abundances

The Astrophysical Journal, 2023
Chemical abundances of Milky Way disk stars are empirical tracers of its enrichment history. However, they capture joint-information that is valuable to disentangle.
Bridget L. Ratcliffe, Melissa K. Ness
doaj   +1 more source