Results 61 to 70 of about 1,642,984 (314)

Chemical Evolution of Galaxies [PDF]

, 2000
Chemical evolution of galaxies brings together ideas on stellar evolution and nucleosynthesis with theories of galaxy formation, star formation and galaxy evolution, with all their associated uncertainties.
Arimoto N., Arnaud M., B. E. J. Pagel, Beers T. C., Edvardsson B., Fuhrmann K., Gasson R. E. M., Gratton R., Gustafsson B., Hoyle F., Larson R. B., Madau P., Maeder A., Marigo P., Matteucci F., Nissen P. E., Pagel B. E. J., Pagel B. E. J., Renzini A., Scalo J., Thielemann F.-K., White S. D. M.   +21 more
core   +4 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Dynamical and chemical evolution of NGC1569

, 2005
Blue Compact Dwarf and Dwarf Irregular galaxies are generally believed to be unevolved objects, due to their blue colors, compact appearance and large gas fractions.
Aguirre, Aloisi, Aloisi, Alvensleben, Anders, Angeretti, Aparicio, Arnone, Arp, Babul, Blitz, Bradamante, Böhringer, Centurión, Chiappini, Chiappini, Chiappini, Ciotti, D'Ercole, de Heij, de Marchi, Dyson, Ellis, F. Matteucci, Fagotto, Finoguenov, G. Hensler, Gallagher, Gastaldello, Gibson, Greggio, Heckman, Henry, Herwig, Israel, Izotov, Izotov, Izotov, Kennicutt, Kobulnicky, Kobulnicky, Kunth, Köppen, L. Angeretti, Lilly, Loewenstein, Marcolini, Marconi, Marconi, Martin, Martin, Masegosa, Matsushita, Matteucci, Matteucci, Meynet, Momany, Mori, Mori, Mühle, Mühle, Olofsson, Origlia, Ostriker, Ott, Pagel, Pilyugin, Pipino, Pipino, Reakes, Recchi, Recchi, Recchi, Renzini, Renzini, Roediger, Romano, Ruiz-Lapuente, S. Recchi, Searle, Skillman, Spite, Sternberg, Stil, Stil, Tinsley, Tosi, Tozzi, Vallenari, van den Hoek, van Zee, Vílchez, Weidner, Woosley, Östlin   +94 more
core   +1 more source

The Evolution of 3He, 4He and D in the Galaxy [PDF]

, 2000
In this work we present the predictions of a modified version of the ``two-infall model'' (Chiappini et al. 1997) for the evolution of 3He, 4He and D in the solar vicinity, as well as their distributions along the Galactic disk.
Chiappini, Cristina, Matteucci, Francesca   +1 more
core   +2 more sources

CHEMICAL EVOLUTION [PDF]

, 1965
How did life come to be on the surface of the earth? Darwin himself recognized that his basic idea of evolution by variation and natural selection must be a continuous process extending backward in time through that period in which the first living things arose and into the period of 'Chemical Evolution' which preceded it.
openaire   +2 more sources

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

FEBS Letters, EarlyView.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii, Edoardo Andrea Cutolo, Daniele Montepietra, Claudia Battarra, Roberto Caferri, Stefano Capaldi, Zeno Guardini, Luca Dall'Osto, Roberto Bassi   +8 more
wiley   +1 more source

Galactic and Cosmic Chemical Evolution with Hypernovae

, 2005
We provide new nucleosynthesis yields depending on metallicity and energy (i.e., (normal supernovae and hypernovae), and show the evolution of heavy element abundances from C to Zn in the solar neighborhood.
Kobayashi, Chiaki
core   +1 more source

Galactic chemical evolution [PDF]

Proceedings of XII International Symposium on Nuclei in the Cosmos — PoS(NIC XII), 2013
In this paper we review the current ideas about the formation of our Galaxy. In particular, the main ingredients necessary to build chemical evolution models (star formation, initial mass function and stellar yields) are described and discussed. A critical discussion about the main observational constraints available is also presented.
Gabriele Cescutti, Cristina Chiappini
openaire   +1 more source

The role of fibroblast growth factors in cell and cancer metabolism

FEBS Letters, EarlyView.
Fibroblast growth factor (FGF) signaling regulates crucial signaling cascades that promote cell proliferation, survival, and metabolism. Therefore, FGFs and their receptors are often dysregulated in human diseases, including cancer, to sustain proliferation and rewire metabolism.
Jessica Price, Chiara Francavilla
wiley   +1 more source

Looking for the origin of life in cosmochemistry: Asteroids and their carbon-rich meteorites

Mètode Science Studies Journal: Annual Review, 2016
Carbonaceous chondrite meteorites are carbon-containing fragments of primitive asteroids that have offered the only samples available to date giving insights into chemical evolution in laboratory analyses.
Sandra Pizzarello
doaj   +1 more source