Results 61 to 70 of about 459,316 (304)

Abundance Gradients and the Formation of the Milky Way [PDF]

, 2001
In this paper we adopt a chemical evolution model, which is an improved version of the Chiappini, Matteucci and Gratton (1997) model, assuming two main accretion episodes for the formation of the Galaxy.
Carigi L., Chang R. X., Creze M., Cristina Chiappini, Donatella Romano, Esteban C., Fitzsimmons A., Flynn C., Francesca Matteucci, Friel E. D., Friel E. D., Fuhrmann K., Gerritsen J. P. E., Goswami A., Gratton R., Guibert J., Gummersbach C. A., Hensler G., Hou J. L., Kaufer A., Kilian-Montenbruck J., Larson R. B., Lyne A. G., Maciel W. J., Maciel W. J., Maciel W. J., Matteucci F., Matteucci F., Mera D., Pagel B. E. J., Pagel B. E. J., Portinari L., Portinari L., Portinari L., Renzini A., Scalo J. M., Shaver P. A., Tosi M., Tsujimoto T., Twarog B. A., Vilchez J. M.   +40 more
core   +2 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

Evapotranspiration, gross primary productivity and water use efficiency over a high-density olive orchard using ground and satellite based data

Agricultural Water Management, 2023
The trade-off between increasing agricultural production and groundwater conservation, which is often the only irrigation source in arid regions, is a major challenge for water managers, decision-makers and the scientific community.
Jamal Elfarkh, Kasper Johansen, Marcel M. El Hajj, Samir K. Almashharawi, Matthew F. McCabe   +4 more
doaj   +1 more source

The distribution of red and blue galaxies in groups: an empirical test of the halo model

, 2004
The popular halo model predicts that the power spectrum of the galaxy fluctuations is simply the sum of the large scale linear halo-halo power spectrum and the weighted power spectrum of the halo profile.
Collister, Adrian A., Lahav, Ofer
core   +1 more source

CCT4 promotes tunneling nanotube formation

FEBS Letters, EarlyView.
Tunneling nanotubes (TNTs) are membranous tunnel‐like structures that transport molecules and organelles between cells. They vary in thickness, and thick nanotubes often contain microtubules in addition to actin fibers. We found that cells expressing monomeric CCT4 generate many thick TNTs with tubulin.
Miyu Enomoto, Akiko Asada, Taro Saito, Kanae Ando   +3 more
wiley   +1 more source

The Music of Spheres [ God as A Geometer ] [PDF]

Anastasis: Research in Medieval Culture and Art, 2014
The rediscovery and enhancement of the standards, canons or constructive techniques of the pictorial space used by the masters of the traditional periods in art history, could be a viable alternative to the identity crisis that defines contemporary art ...
Cristian Ungureanu
doaj  

On the integrability of halo dipoles in gravity

, 1996
We stress that halo dipole components are nontrivial in core-halo systems in both Newton's gravity and General Relativity. To this end, we extend a recent exact relativistic model to include also a halo dipole component. Next, we consider orbits evolving
Grammaticos, Patricio S Letelier, Vieira, Werner M Vieira   +3 more
core   +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

The outer regions of the giant Virgo galaxy M87. Kinematic separation of stellar halo and intracluster light

, 2015
We present a spectroscopic study of 287 Planetary Nebulas (PNs) in a total area of ~0.4 deg^2 around the BCG M87 in Virgo A. With these data we can distinguish the stellar halo from the co-spatial intracluster light (ICL).
Arnaboldi, Magda, Gerhard, Ortwin, Hanuschik, Reinhard, Longobardi, Alessia   +3 more
core   +1 more source

Rad27/FEN1 prevents accumulation of Okazaki fragments and ribosomal DNA copy number changes

FEBS Letters, EarlyView.
The budding yeast Rad27 is a structure‐specific endonuclease. Here, the authors reveal that Rad27 is crucial for maintaining the stability of the ribosomal RNA gene (rDNA) region. Rad27 deficiency leads to the accumulation of Okazaki fragments and changes in rDNA copy number.
Tsugumi Yamaji, Yuko Katayama, Nanase Arata, Mariko Sasaki   +3 more
wiley   +1 more source