Results 41 to 50 of about 4,168 (159)

On nilpotent Chernikov 2-groups with elementary tops

open access: yes, 2016
We give an explicit description of nilpotent Chernikov 2-groups with elementary tops and the basis of rank 2.
Drozd, Y.A., Plakosh, A.I.
openaire   +3 more sources

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

The dependency diagram of a mixed integer linear programme [PDF]

open access: yes, 2013
The Dependency Diagram of a Linear Programme (LP) shows how the successive inequalities of an LP depend on former inequalities, when variables are projected out by Fourier- Motzkin Elimination. This is explained in a paper referenced below.
Williams, H. P.
core  

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

Periodic waves in bimodal optical fibers

open access: yes, 2003
We consider coupled nonlinear Schrodinger equations (CNLSE) which govern the propagation of nonlinear waves in bimodal optical fibers. The nonlinear transform of a dual-frequency signal is used to generate an ultra-short-pulse train.
Agrawal   +29 more
core   +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

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