Results 91 to 100 of about 3,230 (268)

A robotic and high‐throughput X‐ray micro‐computed tomography workflow

open access: yesJournal of Synchrotron Radiation, EarlyView.
A high‐throughput and automated experimental workflow for synchrotron X‐ray micro‐computed tomography is demonstrated. The system integrates automated robotic sample exchange and data acquisition, enabling large‐scale and data‐driven research.With the recent upgrades of synchrotron facilities and an increasing demand for artificial intelligence (AI ...
Xiaoyang Liu   +8 more
wiley   +1 more source

A Precise Beam Dynamics Model of the PSI Injector 2 to Estimate the Intensity Limit

open access: yes, 2014
We describe a precise beam dynamics model of the production set up of the Injector 2 Cyclotron at the Paul Scherrer Institut (PSI). Injector 2 is a 72 MeV separate-sector cyclotron producing a high intensity proton beam up to 3 mA CW, which is then ...
Barlow, Roger, Kolano, Anna
core  

A new generation of medical cyclotrons for the 90s [PDF]

open access: yes, 1995
Cyclotrons continue to be efficient accelerators for use in radio-isotope production. In recent years, developments in accelerator technology have greatly increased the practical beam current in these machines while also improving the overall system ...
Milton, B F, Milton, B. F.
core  

Reassessing the organic carbon budget in the Murchison meteorite through an extraction–recovery mass‐balance approach

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract A substantial fraction of organic carbon in carbonaceous chondrites has long been described as “missing,” reflecting incomplete recovery and limited resolution of operationally defined organic components. Here, we present a quantitative reassessment of the carbon budget in the Murchison meteorite using an integrated extraction–recovery mass ...
Hina Dohi   +2 more
wiley   +1 more source

Niobium as Preferential Material for Cyclotron Target Windows

open access: yesInstruments
The present work promotes and validates the benefits of using niobium instead of Havar® as the material for the target windows in most routine irradiations in cyclotrons. Calculation of the material activation and measurements of the contamination of the
Sergio J. C. do Carmo, Francisco Alves
doaj   +1 more source

Simulations All the Way Up! An Atheist's Response to the Fine‐Tuning Argument

open access: yesAnalytic Philosophy, EarlyView.
ABSTRACT So the Fine‐tuning Argument goes, because it is so unlikely for the physical constants of the laws of nature to have taken the values that they in fact take, we should significantly raise our credence that God exists. Simulation Arguments argue that our world might be (or, in stronger versions, that it probably is) a mere computer simulation ...
Nikk Effingham
wiley   +1 more source

A New Family of High-Current Cyclotrons

open access: yes, 2023
We have developed a new family of compact cyclotrons capable of 10 mA of protons at energies up to 60 MeV. Designed for the IsoDAR neutrino experiment [1], the x10 current increase could find important applications in isotope production, for products ...
Conrad, Janet   +4 more
core   +1 more source

Superconducting Mini-Cyclotrons as AMS Instruments

open access: yes, 1990
We have studied the limitations of conventional mass spectrometry and have examined accelerator based methods which could help circumvent these limitations. In particular, cyclotron-based accelerator mass spectrometric (AMS) techniques are discussed with
Milinkovic, L. S.   +4 more
core   +1 more source

Quantitative Imaging of Pyruvate Metabolism in a Patient With Anaplastic Thyroid Cancer

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 2, Page 826-838, August 2026.
ABSTRACT Purpose Magnetic resonance imaging using hyperpolarized (HP) [1‐13C]‐pyruvate enables assessment of pyruvate metabolism in vivo and offers new insight into metabolic changes in response to cancer therapy. Widely used semi‐quantitative metrics of pyruvate metabolism can be affected by physiological factors that are extrinsic to intracellular ...
James A. Bankson   +18 more
wiley   +1 more source

Inflation and cyclotron motion

open access: yesPhysical Review D, 2017
We consider, in the context of a braneworld cosmology, the motion of the universe coupled to a four-form gauge field, with constant field strength, defined in higher dimensions. It is found, under rather general initial conditions, that in this situation there is a period of exponential inflation combined with cyclotron motion in the inflaton field ...
openaire   +3 more sources

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