Results 11 to 20 of about 1,351 (167)

Quantifying uncertainty in calibration and clinical application of EBT-4 Gafchromic film dosimetry. [PDF]

open access: yesMed Phys
Abstract Background GAFchromic films (GAFs) are essential tools in radiotherapy dosimetry, but uncertainties in calibration methods limit their accuracy and hinder consistency across clinical practice. Purpose This study aimed to perform a comparative analysis of different calibration functions for GAFchromic EBT4 films in single‐ and double‐channel ...
Lombardi R   +6 more
europepmc   +2 more sources

Variational approach to multimode nonlinear optical fibers. [PDF]

open access: yesNanophotonics
Abstract We analyze the spatiotemporal solitary waves of a graded‐index multimode optical fiber with a parabolic transverse index profile. Using the nonpolynomial Schrödinger equation approach, we derive an effective one‐dimensional Lagrangian associated with the Laguerre–Gauss modes with a generic radial mode number p and azimuthal index m.
Lorenzi F, Salasnich L.
europepmc   +2 more sources

Novel flexible and conformable composite neutron scintillator based on fully enriched lithium tetraborate

open access: yesScientific Reports, 2023
Thermal neutron detection is a key subject for nuclear physics research and also in a wide variety of applications from homeland security to nuclear medicine.
Felix Pino   +8 more
doaj   +1 more source

Galileo Galilei

open access: yesAnnals of medical history
Biographie des Astronomen und Mathematikers Galileo Galilei (1564-1642). Der Inquisitionsprozess 1633 wird ausführlich geschildert, wenn ihm auch - wie Moritz Cantor bedauernd erklärt - ein Einblick in die Prozessakten, die erst 1984 freigegeben wurden, vom Vatikan nicht gewährt wurde.
Zirardini, Giuseppe   +2 more
  +9 more sources

Learning to communicate. The experience of an Italian emergency department

open access: yesEmergency Care Journal, 2023
Dear Editor, In his essay "Considerations on Tasso," published in 1793, Galileo Galilei described Tasso as a man poor in concepts and lacking in knowledge, who resorted to literary subterfuges and "abstruse" literary techniques, thereby emphasizing the ...
Valentina Vignola   +2 more
doaj   +1 more source

A fresh view on string orbifolds

open access: yesJournal of High Energy Physics, 2023
In quantum field theory, an orbifold is a way to obtain a new theory from an old one by gauging a finite global symmetry. This definition of orbifold does not make sense for quantum gravity theories, that admit (conjecturally) no global symmetries.
Stefano Giaccari, Roberto Volpato
doaj   +1 more source

Binary Black Hole Spins: Model Selection with GWTC-3

open access: yesUniverse, 2023
The origin of the spins of stellar-mass black holes is still controversial, and angular momentum transport inside massive stars is one of the main sources of uncertainty. Here, we apply hierarchical Bayesian inference to derive constraints on spin models
Carole Périgois   +4 more
doaj   +1 more source

NGC1818 unveils the origin of the extended main-sequence turn-off in young Magellanic Clouds clusters

open access: yesNature Communications, 2022
The nature of young star clusters in the Magellanic Clouds is debated. Here, the authors show an alternative approach that exploits data to exclude the presence of age differences greater than a few million years among cluster stars in a very young ...
Giacomo Cordoni   +10 more
doaj   +1 more source

Memoria e ripetizione come strategie argomentative nelle testimonianze di Galileo Galilei al Santo Offizio

open access: yesCaligrama: Revista de Estudos Românicos, 2011
Resumo: O presente trabalho pretende focalizar o percurso discursivo dos depoimentos do astrônomo italiano Galileu Galilei, no julgamento a que foi submetido em Roma, pela Inquisição, em 1633. Visa-se apresentar e analisar alguns dos recursos retóricos e
Patrizia Collina Bastianetto
doaj   +1 more source

Triggerless data acquisition pipeline for Machine Learning based statistical anomaly detection [PDF]

open access: yesEPJ Web of Conferences
This work describes an online processing pipeline designed to identify anomalies in a continuous stream of data collected without external triggers from a particle detector.
Grosso Gaia   +6 more
doaj   +1 more source

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