Results 71 to 80 of about 25,964 (242)

Spin dynamics of low-dimensional excitons due to acoustic phonons

open access: yes, 2006
We investigate the spin dynamics of excitons interacting with acoustic phonons in quantum wells, quantum wires and quantum disks by employing a multiband model based on the $4\times4$ Luttinger Hamiltonian.
A Thilagam   +18 more
core   +1 more source

Facies Characterization and Volcanic Source Assignment of Marine Tephra Deposits Around São Miguel Island, Azores Archipelago

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract Long‐term tephrostratigraphies of volcanic islands such as the Azores are often limited to young and incomplete subaerial records. Here, we present a Pleistocene‐Holocene marine tephra archive around the eastern islands of the Azores based on 22 marine gravity cores.
J. C. Schindlbeck‐Belo   +8 more
wiley   +1 more source

Hadronic interactions and cosmic rays at ultra high energies

open access: yesEPJ Web of Conferences, 2013
Observations of ultra high energy cosmic rays allow in principle to obtain information about the properties of hadronic interactions in an energy range not accessible with particle accelerators.
Lipari Paolo
doaj   +1 more source

Impact vesiculation – a new trigger for volcanic bubble growth and degassing [PDF]

open access: yes, 2007
We highlight a potentially important trigger for bubble growth and degassing in volcanic bombs. We have successfully triggered bubble growth in previously unvesiculated samples of silicate melt during experiments to simulate volcanic bomb impact, by ...
Dingwell, D. B.   +3 more
core   +1 more source

Electric field and exciton structure in CdSe nanocrystals

open access: yes, 2004
Quantum Stark effect in semiconductor nanocrystals is theoretically investigated, using the effective mass formalism within a $4\times 4$ Baldereschi-Lipari Hamiltonian model for the hole states.
A. Baldereschi   +39 more
core   +1 more source

Major‐Minor‐Trace Element Analyses and Oceanographic Modeling Confirms Circumpolar Transport of the 1962 Protector Shoal Pumice Raft

open access: yesJournal of Geophysical Research: Oceans, Volume 130, Issue 12, December 2025.
Abstract Pumice rafts derived from submarine eruptions can remain afloat for months or even years, traveling thousands of kilometers on ocean currents. These natural phenomena disperse marine organisms and provide important evidence for submarine volcanism yet are not fully understood.
Alistair J. Monteath   +8 more
wiley   +1 more source

SOMATOTOPY OF THE TRIGEMINAL COMPLEX: NERVE, GANGLION, NUCLEUS.

open access: yesEuromediterranean Biomedical Journal, 2017
This paper summarizes, in a modern fashion and with a number of molecular, functional and magnetic resonance imaging details, the main morphological data about the trigeminal complex (i.e., trigeminal nerve, ganglion and nucleus).
Alessio Lipari
doaj   +1 more source

On inconsistency of experimental data on primary nuclei spectra with sea level muon intensity measurements

open access: yes, 2004
For the first time a complete set of the most recent direct data on primary cosmic ray spectra is used as input into calculations of muon flux at sea level in wide energy range $E_\mu=1-3\cdot10^5$ GeV.
A A Lagutin   +62 more
core   +1 more source

The nexus of decay and birth: Ecological and evolutionary significance of wood‐decaying fungi in green Calypsoinae orchid germination

open access: yesFunctional Ecology, Volume 39, Issue 12, Page 3659-3671, December 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract A key feature of Orchidaceae is the production of dust‐like seeds that depend on fungal carbon during early development. Although protocorms and mature green orchids typically associate with rhizoctonia fungi, many non‐photosynthetic orchids and some photosynthetic ...
Kenji Suetsugu, Hidehito Okada
wiley   +1 more source

Breeding seabirds of the Sicilian islands: distribution and abundance within the Marine Strategy Framework Directive monitoring program

open access: yesRivista Italiana di Ornitologia - Research in Ornithology
Four marine bird species breeding in the circum-Sicilian islands were monitored during 2021-2024 with the aim of updating data on distribution, breeding success, and population size for the EU Marine Strategy Directive (MSFD 2008/56/CE).
Pietro Lo Cascio   +16 more
doaj   +1 more source

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