Results 61 to 70 of about 79,565 (217)

Environmental effects on star formation in dwarf galaxies and star clusters

, 2014
We develop a simple analytical criterion to investigate the role of the environment on the onset of star formation. We will consider the main external agents that influence the star formation (i.e.
Chiosi, C., Cropper, M., Fujita, Y., Grebel, E. K., Pasetto, S.   +4 more
core   +1 more source

Vortex Beam Lasing from III‐V Nanowires Epitaxially Grown on Silicon‐on‐Insulator

Laser &Photonics Reviews, EarlyView.
An epitaxially grown InGaAs nanowire photonic crystal laser on silicon‐on‐insulator is demonstrated to emit vortex beams carrying orbital angular momentum. Deforming the honeycomb lattice causes the band inversion effect and creates symmetry‐protected bound states in the continuum, enabling single‐mode lasing with a topological charge of −2 ...
Bogdan‐Petrin Ratiu, Ji Tong Wang, Kyle Netherwood, Tim Grieb, Andreas Rosenauer, Sang Soon Oh, Nicolae‐Coriolan Panoiu, Qiang Li   +7 more
wiley   +1 more source

Constraining smoothness parameter and the DD relation of Dyer-Roeder equation with supernovae

, 2013
Our real universe is locally inhomogeneous. Dyer and Roeder introduced the smoothness parameter $\alpha$ to describe the influence of local inhomogeneity on angular diameter distance, and they obtained the angular diameter distance-redshift approximate ...
Yang, Xi, Yu, Hao-Ran, Zhang, Tong-Jie
core   +1 more source

Metasurfaces in Adaptive Optics: A New Opportunity in Optical Wavefront Sensing

Laser &Photonics Reviews, EarlyView.
Wavefront sensing constitutes a critical component of adaptive optics systems, aimed at quantitatively measuring distorted wavefronts and enabling closed‐loop correction in optical setups. Metasurfaces, as planar optical elements composed of nanoscale structures, provide exceptional freedom in modulating multiple dimensions of the light field.
Rundong Fan, Zichao Wang, Pei Li, Lei Huang   +3 more
wiley   +1 more source

Variability in the movement and foraging behaviour of female Eurasian lynx during the denning season across Europe

Oikos, EarlyView.
Animal movement and reproductive behaviour are crucial components of ecological and evolutionary processes. After parturition, the behaviour of reproducing females adapts to the needs of their offspring, including thermoregulation, protection and food provisioning.
Naima Dalpiaz, Miha Krofel, Jenny Mattisson, Kristina Vogt, Sven Signer, Julian Oeser, Joseph Premier, Mariano Rodríguez‐Recio, Henrik Andrén, Malin Aronsson, Martin Dul'a, Marco Heurich, John D. C. Linnell, Peep Männil, Anja Molinari‐Jobin, John Odden, Jens Persson, Teresa Oliveira   +17 more
wiley   +1 more source

Structure and Migration Mechanisms of Oxygen Interstitial Defects in β‐Ga2O3

physica status solidi (b), EarlyView.
The structures and diffusion mechanisms of interstitial oxygen in different charge states in β‐Ga2O3 are extensively studied using density functional theory. The results provide a detailed map of the potential energy surface for oxygen interstitials in β‐Ga2O3 and demonstrate how these ions migrate between different rings in the structure.
Chaiyawat Kaewmeechai, Jack Strand, Alexander L. Shluger   +2 more
wiley   +1 more source

Effects of Galactic Irradiation on Thermal and Electronic Transport in Tungsten

physica status solidi (b), EarlyView.
This atomic‐scale study reveals how low‐to‐mid‐energy space irradiation alters tungsten's thermal and electronic behavior, even at low defect levels. Focusing on vacancy sites in bulk and near grain boundaries, it employs two novel approaches: site‐projected thermal conductivity and the N2$^{2}$ method for the thermal and electronic response analysis ...
Chinonso Ugwumadu, David A. Drabold, Roxanne M. Tutchton   +2 more
wiley   +1 more source

Search for global f-modes and p-modes in the 8B neutrino flux

, 2013
The impact of global acoustic modes on the 8B neutrino flux time series is computed for the first time. It is shown that the time fluctuations of the 8B neutrino flux depend on the amplitude of acoustic eigenfunctions in the region where the 8B neutrino ...
Lopes, Ilidio
core   +1 more source

Scaling of precipitation extremes with surface temperature in western Canada: Understanding the control factors using a convection‐permitting climate model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
High‐resolution convection‐permitting climate model simulations have been successfully utilized to investigate the relationships between precipitation extremes and temperature (PT scaling) in western Canada. This makes it possible to further examine the relationships between precipitation extremes and other atmospheric conditions, such as column water ...
Lintao Li, Zhenhua Li
wiley   +1 more source

Effects of the urban land use on a severe convective windstorm

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Numerical simulations with the Weather Research and Forecasting model coupled with the Building Effect Parametrization–Building Energy Model multilayer canopy model were conducted to investigate the impact of urban land use on a severe convective windstorm in Milan, northern Italy, on July 25, 2023.
Francesco De Martin, Andrea Zonato, Silvana Di Sabatino   +2 more
wiley   +1 more source