Results 31 to 40 of about 285 (142)

New opportunities for time‐resolved imaging using diffraction‐limited storage rings

open access: yesJournal of Synchrotron Radiation, Volume 31, Issue 5, Page 1299-1307, September 2024.
The opportunities for time‐resolved X‐ray imaging at diffraction‐limited storage rings are demonstrated by benchmarking time‐resolved 2D and 3D imaging at ForMAX, MAX IV. The enhanced flux density provided by the MAX IV storage ring allows micrometer‐resolution time‐resolved imaging at 2 kHz and 1.1 MHz acquisition rates in 3D and 2D, respectively.The ...
Zisheng Yao   +12 more
wiley   +1 more source

Characterization of generalized Chernikov groups among groups with involutions

open access: yesMathematical Notes, 1997
A group \(G\) is said to be a generalized Chernikov group if it is the extension of a direct product \(A\) of Prüfer \(p\)-groups with finitely many factors for each prime \(p\) by a locally normal and finite group, and each element of \(G\) commutes elementwise with all but finitely many Sylow subgroups of \(A\).
openaire   +4 more sources

On central series of some Chernikov p-groups

open access: yesНауковий вісник Ужгородського університету. Серія «Математика і інформатика», 2020
В цій роботі досліджується структура центрального ряду черніковської \(p\)-групи \(G\), яка містить максимальну повну абелеву підгрупу \(M\) індексу \(p\). Добре відомо, що така група є гіперцентальною групою. З іншого боку із теорії розширень груп також добре відомо, що будову цієї групи можна визначити за допомогою певного цілочислового $p$-адичного ...
Бiлецька, Д. Ю.   +1 more
openaire   +1 more source

Estrogen‐dependent gene regulation: Molecular basis of TIMP‐1 as a sex‐specific biomarker for acute lung injury

open access: yesPhysiological Reports, Volume 12, Issue 17, September 2024.
Abstract Increased circulating tissue inhibitor of metalloproteinases‐1 (TIMP‐1) levels have been observed in patients with acute lung injury (ALI). However, the sex‐specific regulation of TIMP‐1 and the underlying molecular mechanisms have not been well elucidated. In this study, we found that plasma TIMP‐1 levels were significantly higher in COVID‐19
Sultan Almuntashiri   +14 more
wiley   +1 more source

PINK: a tender X‐ray beamline for X‐ray emission spectroscopy

open access: yesJournal of Synchrotron Radiation, Volume 31, Issue 3, Page 622-634, May 2024.
This study showcases the potential of the PINK beamline for advancing research in the field of non‐resonant X‐ray emission spectroscopy in the tender X‐ray energy range from 2.1 keV to 9.5 keV.A high‐flux beamline optimized for non‐resonant X‐ray emission spectroscopy (XES) in the tender X‐ray energy range has been constructed at the BESSY II ...
Sergey Peredkov   +5 more
wiley   +1 more source

Heitt Mjölnir: a heated miniature triaxial apparatus for 4D synchrotron microtomography

open access: yesJournal of Synchrotron Radiation, Volume 31, Issue 1, Page 150-161, January 2024.
Heitt Mjolnir, a heated miniature triaxial apparatus for 4D synchrotron microtomography, is described. This new device combines the capacities of a deformation rig and a thermal reactor with large sample volumes and is suitable for a large range of geo‐energy applications.Third‐ and fourth‐generation synchrotron light sources with high fluxes and beam ...
Damien Freitas   +9 more
wiley   +1 more source

On locally soluble periodic groups with Chernikov centralizer of a four-subgroup [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 1994
Let G be a locally soluble periodic group having a four-subgroup V. We show that if CG(V) is Chernikov then G is hyperabelian-by-Chernikov, if CG(V) is finite then G is hyperabelian.
openaire   +1 more source

Some topological properties of residually Černikov groups [PDF]

open access: yesGlasgow Mathematical Journal, 1982
In this paper we shall indicate how to generalise the concept of a cofinite group (see [7]). We recall that any residually finite group can be made into a topological group by taking as a basis of neighbourhoods of the identity precisely the normal subgroups of finite index.
openaire   +2 more sources

Groups whose proper subgroups are Baer-by-Chernikov or Baer-by-(finite rank)

open access: yesOpen Mathematics, 2011
Abstract Our main result is that a locally graded group whose proper subgroups are Baer-by-Chernikov is itself Baer-by-Chernikov. We prove also that a locally (soluble-by-finite) group whose proper subgroups are Baer-by-(finite rank) is itself Baer-by-(finite rank) if either it is locally of finite rank but not locally finite or it has ...
Badis, Abdelhafid, Trabelsi, Nadir
openaire   +1 more source

Groups with Chernikov conjugacy classes in which Sylow permutability is a transitive relation

open access: yesJournal of Algebra, 2010
A subgroup \(H\) of a group \(G\) is called permutable (or quasinormal) if \(HK=KH\) for all subgroups \(K\) of \(G\). A group \(G\) is called a PT-group if permutability is a transitive relation. A subgroup \(H\) is called S-permutable if \(HS=SH\) for every Sylow \(p\)-subgroup \(S\) of \(G\) and for each prime \(p\).
Muñoz-Escolano, J.M.   +2 more
openaire   +1 more source

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