Results 51 to 60 of about 3,230 (268)
A Hoveyda–Grubbs‐Type Olefin Metathesis Catalyst Bearing a Fluorinated Unsymmetrical NHC Ligand
European Journal of Inorganic Chemistry, EarlyView.A fluorinated unsymmetrical NHC ruthenium complex was synthesised and employed as a catalyst for olefin metathesis reactions. The modification of the steric and electronic properties of the NHC ligand through the introduction of fluorine substituents results in improved activity but lower selectivity compared to the analogous non‐fluorinated NHC ...
Rubina Troiano +3 more
wiley +1 more source
Transverse-longitudinal coupling by space charge in cyclotrons
Physical Review Special Topics. Accelerators and Beams, 2011 A method is presented that enables one to compute the parameters of matched beams with space charge in cyclotrons with emphasis on the effect of the transverse-longitudinal coupling.
C. Baumgarten
doaj +1 more source
Hypervision Proton Surgery: The Future Direction of Proton Therapy
iNew Medicine, EarlyView.ABSTRACT Proton beams provide unique physical advantages characterized by a low entrance dose, negligible exit dose, and a sharp Bragg peak, which enable superior sparing of normal tissues and support safe dose escalation for improved tumor control. However, conventional photon‐based fractionation remains widely used in proton therapy, where prolonged ...
Li Li, Shuanghu Yuan
wiley +1 more source
New Ion Source Filament for Prolonged Ion Source Operation on A Medical Cyclotron
Instruments, 2019 Cyclotrons are an important tool for accelerator sciences including the production of medical isotopes for imaging and therapy. For their successful and cost-efficient operation, the planned and unplanned down time of the cyclotron needs to be kept at a ...
Dave Prevost +4 more
doaj +1 more source
Molecular theranostics: principles, challenges and controversies
Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 156-164, March 2025.Molecular theranostics offers a powerful tool to drive precision medicine in nuclear oncology. While theranostics is not a new principle in nuclear medicine, recent advances in instrumentation and radiopharmacy have driven a reinvigoration and a broader suite of applications.
Geoffrey Currie
wiley +1 more source
Towards quantitative simulations of high power proton cyclotrons
Physical Review Special Topics. Accelerators and Beams, 2011 We describe a large scale simulation effort using Object Oriented Parallel Accelerator Library, that leads to a better quantitative understanding of the existing Paul Scherrer Institut high power proton cyclotron facility.
Y. J. Bi +6 more
doaj +1 more source
Laser &Photonics Reviews, EarlyView.A phase‐change magneto‐optical metagrating combines GST switching with InAs guided‐mode resonances to achieve strong nonreciprocal absorption contrast near normal incidence. A static magnetic bias creates direction‐dependent resonant splitting, while GST crystallization quenches and latches the response.
Ye Ming Qing +5 more
wiley +1 more source
Cyclotrons with fast variable and/or multiple energy extraction
Physical Review Special Topics. Accelerators and Beams, 2013 We discuss the possibility in principle of stripping extraction in combination with reverse bends in isochronous separate-sector cyclotrons (and/or fixed field alternating gradient accelerators).
C. Baumgarten
doaj +1 more source
Cyclotron Resonance and Quasiparticles [PDF]
AIP Conference Proceedings, 2005 This introductory paper contains personal perspectives about the importance of cyclotron resonance in forming our modern view of solids. The papers following this one will discuss the discovery, refinements, and some of the latest developments. Although I will touch on some of these subjects, I leave the details to the other authors and in the main ...
openaire +2 more sources
Mass Spectrometry Reviews, EarlyView.ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt +4 more
wiley +1 more source