Magnetic fields and radical reactions: recent developments and their role in nature

2002 ◽  
Vol 31 (5) ◽  
pp. 301-311 ◽  
Author(s):  
Brian Brocklehurst
Keyword(s):  
Magnetic Fields ◽  
Radical Reactions ◽  
Recent Developments

scholarly journals A Study on the Effects of 50 Hz Magnetic Fields on UV-induced Radical Reactions in Murine Fibroblasts

2010 ◽  
Vol 51 (5) ◽  
pp. 609-613 ◽  
Author(s):  
Ari MARKKANEN ◽  
Jonne NAARALA ◽  
Jukka JUUTILAINEN
Keyword(s):  
Magnetic Fields ◽  
Radical Reactions ◽  
Murine Fibroblasts

scholarly journals Magnetism Science with the Square Kilometre Array

Galaxies ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 53
Author(s):  
George Heald ◽  
Sui Mao ◽  
Valentina Vacca ◽  
Takuya Akahori ◽  
Ancor Damas-Segovia ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Large Scale ◽  
Galactic Nuclei ◽  
Dark Matter Annihilation ◽  
New Techniques ◽  
Square Kilometre Array ◽  
New Radio ◽  
Recent Developments ◽  
Using Data ◽  
The Impact

The Square Kilometre Array (SKA) will answer fundamental questions about the origin, evolution, properties, and influence of magnetic fields throughout the Universe. Magnetic fields can illuminate and influence phenomena as diverse as star formation, galactic dynamics, fast radio bursts, active galactic nuclei, large-scale structure, and dark matter annihilation. Preparations for the SKA are swiftly continuing worldwide, and the community is making tremendous observational progress in the field of cosmic magnetism using data from a powerful international suite of SKA pathfinder and precursor telescopes. In this contribution, we revisit community plans for magnetism research using the SKA, in light of these recent rapid developments. We focus in particular on the impact that new radio telescope instrumentation is generating, thus advancing our understanding of key SKA magnetism science areas, as well as the new techniques that are required for processing and interpreting the data. We discuss these recent developments in the context of the ultimate scientific goals for the SKA era.

scholarly journals Cascades, Catalysis and Chiral Ligand Control with SmI2; The Rebirth of a Reagent

2020 ◽  
Vol 74 (1) ◽  
pp. 18-22
Author(s):  
Áron Péter ◽  
David J. Procter
Keyword(s):  
Electron Transfer ◽  
Cascade Reactions ◽  
Single Electron ◽  
Radical Reactions ◽  
Chiral Ligand ◽  
Single Electron Transfer ◽  
Recent Developments ◽  
Radical Cascade

This review focuses on recent developments from our laboratory in the field of radical reactions mediated by the archetypal reductive single electron transfer (SET) reagent, SmI2. Namely, we have expanded the scope of reducible carbonyl moieties to esters and amides and have exploited the resultant ketyl radicals in radical cascade reactions that generate unprecedented scaffolds. Moreover, we have taken the first steps to address the long-standing challenges of catalysis and chiral ligand control associated with the reagent.

scholarly journals Magnetic Massive Stars

2007 ◽  
Vol 3 (S250) ◽  
pp. 577-586 ◽  
Author(s):  
Rich Townsend ◽  
David H. Cohen ◽  
Luc Dessart ◽  
Swetlana Hubrig ◽  
Yaël Nazé ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Significant Influence ◽  
Massive Star ◽  
Massive Stars ◽  
Structure Evolution ◽  
Special Session ◽  
The Past ◽  
Recent Developments ◽  
Circumstellar Environments ◽  
Theoretical Developments

AbstractMagnetic fields are unexpected in massive stars, due to the absence of a sub-surface convective dynamo. However, advances in instrumentation over the past three decades have led to their detection in a small but growing subset of these stars. Moreover, complementary theoretical developments have highlighted their potentially significant influence over the structure, evolution and circumstellar environments of massive stars. Here, we summarize a special session convened prior to the main conference, focused on presenting recent developments in the study of massive-star magnetic fields.

FROM RELATIVISTIC VECTOR MESONS IN CONSTANT MAGNETIC FIELDS TO NONRELATIVISTIC (PSEUDO)SUPERSYMMETRIES

1995 ◽  
Vol 10 (19) ◽  
pp. 2783-2797 ◽  
Author(s):  
J. BECKERS ◽  
N. DEBERGH
Keyword(s):  
Magnetic Field ◽  
Quantum Mechanics ◽  
Magnetic Fields ◽  
Constant Magnetic Field ◽  
Vector Mesons ◽  
One Dimensional ◽  
Recent Developments

Results coming from the study of relativistic vector mesons interacting with a constant magnetic field are examined through Johnson-Lippmann implications on one-dimensional oscillatorlike systems. We obtain specific nonrelativistic Hamiltonians showing new properties in quantum mechanics and leading to superpositions of bosons and pseudofermions. Moreover, two “potentials” are introduced and discussed in comparison with recent developments usually obtained in p=2 parasupersymmetric quantum mechanics. Pseudofermions are also examined, particularly with respect to orthofermions.

scholarly journals What can we learn about convection from asteroseismology?

2006 ◽  
Vol 2 (S239) ◽  
pp. 130-137
Author(s):  
Hans Kjeldsen ◽  
Timothy R. Bedding
Keyword(s):  
Magnetic Fields ◽  
Sound Speed ◽  
Research Field ◽  
Density Structure ◽  
Stellar Oscillations ◽  
Recent Developments

AbstractAsteroseismology—using stellar oscillations to study the interiors of stars—is a relatively new and growing research field in astrophysics. Oscillations are found in stars of most masses and essentially all stages of evolution. Their frequencies are determined by the internal sound speed and density structure of the star, as well as rotation, convection processes and possibly effects of magnetic fields. Recent developments have led to a breakthrough in our ability to study the details of cores of solar-like stars and it is foreseen that a number of key science questions will be addressed through the analysis of frequencies and other properties of stellar oscillations. In this paper we review some of the latest results from asteroseismology of solar-like stars, with the focus on properties of convection.

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