Results 51 to 60 of about 3,580,404 (289)

Proton Spin Based On Chiral Dynamics [PDF]

, 1999
Chiral spin fraction models agree with the proton spin data only when the chiral quark-Goldstone boson couplings are pure spinflip. For axial-vector coupling from soft-pion physics this is true for massless quarks but not for constituent quarks.
Weber, H. J.
core   +2 more sources

Evidence of patchy hydrogen reionization from an extreme Lyα trough below redshift six [PDF]

, 2014
We report the discovery of an extremely long (∼110 Mpc/h) and dark (τeff≳7) Lyα trough extending down to z≃5.5 towards the zem≃6.0 quasar ULAS J0148+0600. We use these new data in combination with Lyα forest measurements from 42 quasars at 4.5≤zem≤6.4 to
G. Becker, J. Bolton, P. Madau, M. Pettini, E. Ryan-Weber, B. Venemans   +5 more
semanticscholar   +1 more source

Self-produced Time Intervals Are Perceived as More Variable and/or Shorter Depending on Temporal Context in Subsecond and Suprasecond Ranges

Frontiers in Integrative Neuroscience, 2016
The processing of time intervals is fundamental for sensorimotor and cognitive functions. Perceptual and motor timing are often performed concurrently (e.g., playing a musical instrument).
Keita eMitani, Makio eKashino, Makio eKashino   +2 more
doaj   +1 more source

Numerical Models for the Diffuse Ionized Gas in Galaxies. II. Three-dimensional radiative transfer in inhomogeneous interstellar structures as a tool for analyzing the diffuse ionized gas

, 2018
Aims: We systematically explore a plausible subset of the parameter space involving effective temperatures and metallicities of the ionizing stellar sources, the effects of the hardening of their radiation by surrounding leaky HII regions with different ...
Hoffmann, T. L., Pauldrach, A. W. A., Weber, J. A.   +2 more
core   +1 more source

Signature of deconfinement with spin down compression in cooling hybrid stars [PDF]

, 2009
The thermal evolution of neutron stars is coupled to their spin down and the resulting changes in structure and chemical composition. This coupling correlates stellar surface temperatures with rotational state as well as time.
Aguilera, Baldo, Baym, Blaschke, Drago, Fernández, Freire, Freire, Fridolin Weber, Geppert, Glendenning, Glendenning, Glendenning, Jes Madsen, Kaaret, Landau, Miao, Morten Stejner, Page, Potekhin, Schaab, Schaab, Schaffner-Bielich, Thorne, Voskresensky, Weber, Xiaoping, Yakovlev   +27 more
core   +1 more source

On the One-Dimensional Modeling of Vertical Upward Bubbly Flow

Science and Technology of Nuclear Installations, 2018
The one-dimensional two-fluid model approach has been traditionally used in thermal-hydraulics codes for the analysis of transients and accidents in water–cooled nuclear power plants.
C. Peña-Monferrer, C. Gómez-Zarzuela, S. Chiva, R. Miró, G. Verdú, J. L. Muñoz-Cobo   +5 more
doaj   +1 more source

Depression does not affect time perception and time-to-contact estimation

Frontiers in Psychology, 2014
Depressed patients frequently report a subjective slowing of the passage of time. However, experimental demonstrations of altered time perception in depressed patients are not conclusive. We added a timed action task (time-to-contact estimation, TTC) and
Daniel eOberfeld, Sven eThönes, Benyne Jos Palayoor, Heiko eHecht   +3 more
doaj   +1 more source

Equivalence of background and bleaching desensitization in isolated rod photoreceptors of the larval tiger salamander. [PDF]

, 1996
Psychophysical experiments have shown an equivalence between sensitivity reduction by background light and by bleaches for the human scotopic system.
Cornwall, MC, Fain, GL, Jones, GJ
core  

Implications of Hyperon Pairing for Cooling of Neutron Stars [PDF]

, 1998
The implications of hyperon pairing for the thermal evolution of neutron stars containing hyperons are investigated. The outcome of cooling simulations are compared for neutron star models composed only of nucleons and leptons, models including hyperons,
Amundsen L., Christoph Schaab, Haensel P., Jürgen Schaffner-Bielich, Levenfish K., Page D., Potekhin A. Y., Schaab C., Schaab C., Shmuel Balberg, Voskresenskii D. N.   +10 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