Results 91 to 100 of about 11,405,945 (372)

Absolute Magnitudes of Seismic Red Clumps in the Kepler Field and SAGA: the age dependency of the distance scale

, 2017
Red clump stars are fundamental distance indicators in astrophysics, although theoretical stellar models predict a dependence of absolute magnitudes with ages.
Aguirre, V. Silva, Bovy, J., Casagrande, L., Chen, Y. Q., Jia, Y. P., Zhao, G., Zhao, J. K.   +6 more
core   +1 more source

Stellar populations in gas-rich galaxy mergers II. Feedback effects of Type Ia and II supernovae [PDF]

, 1998
We numerically investigate chemodynamical evolution of major disk-disk galaxy mergers in order to explore the origin of mass-dependent chemical, photometric, and spectroscopic properties observed in elliptical galaxies.
Aragon-Salamanca A., Arimoto N., Bower R. G., Bressan A., Bressan A., Davies R. L., Fall S. M., Fioc M., Fritze, Jorgensen I., Kenji Bekki, Kodama T., Larson R. B., Matteucci F., Matteucci F., Navarro J., Peletier R. F., Sandage A., Schmidt M., Tantalo R., Wielen R., Yasuhiro Shioya, Ziegler B.   +22 more
core   +3 more sources

The Ancylus transgression in the area of Espoo - the first Salpausselkä, southern Finland [PDF]

Bulletin of the Geological Society of Finland, 1987
The extent and age of the Ancylus transgression was studied by means of shore marks in the field, biostratigraphy from 39 bog and lake basins, and radiocarbon determinations in the area of the Salpausselka zone, west of Helsinki, southern Finland.
O. Ristaniemi, G. Glückert
doaj   +1 more source

Vendian age of igneous rocks of the Chamberlain valley area (Northern part of the Wedel Jarlsberg Land, Svalbard Archipelago)

Записки Горного института, 2022
The geological structure, structural relations with the underlying complexes, mineral composition, age and origin of sedimentary-volcanogenic and intrusive formations of the Chamberlain valley area (northern part of the Wedel Jarlsberg Land, Svalbard ...
Aleksandr N. Sirotkin, Aleksandr N. Evdokimov   +1 more
doaj   +1 more source

Screening for lung cancer: A systematic review of overdiagnosis and its implications

Molecular Oncology, EarlyView.
Low‐dose computed tomography (CT) screening for lung cancer may increase overdiagnosis compared to no screening, though the risk is likely low versus chest X‐ray. Our review of 8 trials (84 660 participants) shows added costs. Further research with strict adherence to modern nodule management strategies may help determine the extent to which ...
Fiorella Karina Fernández‐Sáenz, Laura de la Torre‐Perez, David R Baldwin, Carlijn van der Aalst, Mangesh Thorat, David Ritchie, Andre L Carvalho, Carolina Espina, Ivan Solà, Carlos Canelo‐Aybar, Moira Magdalena Pissinis, Pablo Alonso‐Coello, Ana Carolina Pereira Nunes Pinto   +12 more
wiley   +1 more source

Relative distances of Omega Centauri and 47 Tucanae

, 2008
We present precise optical and near-infrared ground-based photometry of two Globular Clusters (GCs): Omega Cen and 47 Tuc. These photometric catalogs are unbiased in the Red Giant Branch (RGB) region close to the tip.
A. Calamida, A. Di Cecco, A. Piersimoni, A. R. Walker, Bellazzini, Bellazzini, Benedict, C. E. Corsi, C. Sterken, Calamida, Caputo, Cassisi, Catelan, Clement, Del Principe, Evans, F. Caputo, G. Bono, G. Iannicola, I. Ferraro, J. Storm, Johnson, Kaluzny, King, L. M. Freyhammer, L. Pulone, Layden, M. Dall'Ora, M. Monelli, M. Nonino, McLaughlin, McNamara, N. Sanna, P. B. Stetson, R. Buonanno, Rey, Rizzi, Storm, Szewczyk, T. Tuvikene, Thompson, Y. Bouzid, Zoccali   +42 more
core   +1 more source

The mass of the very massive binary WR21a [PDF]

, 2015
We present multi-epoch spectroscopic observations of the massive binary system WR21a, which include the January 2011 periastron passage. Our spectra reveal multiple SB2 lines and facilitate an accurate determination of the orbit and the spectral types of
de Koter, A., Fitzsimons, N. E., Kaper, L., Mahy, L., Moffat, A., Sana, H., Tramper, F.   +6 more
core   +3 more sources

The biostratigraphy of sediments deposited in the Lake Kaali meteorite impact structure, Saaremaa island, Estonia [PDF]

Bulletin of the Geological Society of Finland, 1991
The results of lithological, biostratigraphical and chronostratigraphical studies on the Lake Kaali meteorite impact structure, Estonia (lat 58°22' N, long 22°40' E) are discussed. Two pollen diagrams and 18 radiocarbon dates from different materials are
L. Saarse, R. Rajamäe, A. Heinsalu, J. Vassiljev   +3 more
doaj   +1 more source

Class IIa HDACs forced degradation allows resensitization of oxaliplatin‐resistant FBXW7‐mutated colorectal cancer

Molecular Oncology, EarlyView.
HDAC4 is degraded by the E3 ligase FBXW7. In colorectal cancer, FBXW7 mutations prevent HDAC4 degradation, leading to oxaliplatin resistance. Forced degradation of HDAC4 using a PROTAC compound restores drug sensitivity by resetting the super‐enhancer landscape, reprogramming the epigenetic state of FBXW7‐mutated cells to resemble oxaliplatin ...
Vanessa Tolotto, Nicolò Gualandi, Ylenia Cortolezzis, Raffaella Picco, Monica Colitti, Francesca D'Este, Mariachiara Gani, Wayne W. Hancock, Giovanni Terrosu, Cristina Degrassi, Francesca Agostini, Claudio Brancolini, Luigi E. Xodo, Eros Di Giorgio   +13 more
wiley   +1 more source

Miocene Slănic Tuff, Eastern Carpathians, Romania, in the Context of Badenian Salinity Crisis

Geosciences, 2018
New geochronological investigations for the Slănic Formation, correlated with previous bio- and lithostratigaphical information, allow for a better succession of events for the Middle Miocene, including the absolute age of the Badenian salinity crisis in
Ana-Voica Bojar, Victor Barbu, Artur Wojtowicz, Hans-Peter Bojar, Stanisław Hałas, Octavian G. Duliu   +5 more
doaj   +1 more source