Results 61 to 70 of about 4,674,369 (143)

Spectrum, March 1980 [PDF]

, 1980
Volume 2, Number 1 of Spectrum literary journalhttps://nwcommons.nwciowa.edu/spectrum/1002/thumbnail ...
Spectrum Contributors,
core   +1 more source

The Faddeev equation and location of the essential spectrum of a three-particle model operator

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
In this paper a model operator H associated to a system of three-particles on a lattice is considered. The location of the essential spectrum of H is described by the spectrum of channel operators.
Tulkin Kh Rasulov, Askar A Rakhmonov
doaj  

Study on biofilm formation by Extended Spectrum β-lactamase (ESBL) producing Klebsiella isolates

Zagazig Journal of Pharmaceutical Sciences, 2014
Infections caused by multidrug-resistant Klebsiella species that produce Extended-Spectrum β-lactamase (ESBL) enzymes have been reported with increasing frequency in intensive-care units and are associated with significant morbidity and mortality ...
Hemmat K. Abd El Latif , Ramdan H. Ibrahim , Amira M. El-Ganiny , Heba I. Abd El Sabour   +3 more
doaj   +1 more source

Structure of the essential spectrum of a model operator associated to a system of three particles on a lattice

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
We consider a model operator H associated to a system of three particles interacting via nonlocal pair potentials on a three dimensional lattice. The existence conditions of the eigenvalues of a corresponding Friedrichs model are found and the structure ...
Tulkin Kh Rasulov
doaj  

Faddeev equation and its symmetric version for a three-particle lattice hamiltonian [PDF]

E3S Web of Conferences
In the present paper we consider the three-particle lattice Hamiltonian associated to a system of three particles on the d-dimensional lattice, where the role of two-particle discrete Schroedinger operators is played by a family of Friedrichs models.
Umirkulova Gulhayo H., Bahronov Bekzod I., Tosheva Nargiza A., Begmurodov Otabek A., Akboeva Nilufar U.   +4 more
doaj   +1 more source

The concentration of trace and toxic elements in the hair and in plasma of children with the autism spectrum disorder

Journal of Education, Health and Sport, 2019
Introduction: Explanation of pathogenesis and selection of an effective therapeutic form to treat children with autism spectrum disorders (ASD) is still one of today's challenges.
Przemysław Szabat, Julita Poleszak, Marta Szabat, Grzegorz Boreński, Magdalena Wójcik, Joanna Milanowska   +5 more
doaj   +3 more sources

The essential spectrum of the Laplacian

, 2012
In this article we prove a generalization of Weyl's criterion for the essential spectrum of a self-adjoint operator on a Hilbert space. We then apply this criterion to the Laplacian on functions over open manifolds and get new results for its essential spectrum.
Charalambous, Nelia, Lu, Zhiqin
openaire   +2 more sources

Spectrum Allocation, Spectrum Commons and Public Goods: the Role of the Market [PDF]

The reallocation of radio spectrum to valuable new and emerging technologies and services is essential to achieving the next wave of productivity and consumer benefits driven by ICT.
Marks, Phillipa, Marks, Brian
core  

Spectrum, April 1983 [PDF]

, 1983
Volume 5, Number 2 of Spectrum literary journalhttps://nwcommons.nwciowa.edu/spectrum/1009/thumbnail ...
Spectrum Contributors,
core   +1 more source

Ascent and Essential Ascent Spectrum of Linear Relations

Extracta Mathematicae, 2016
In the present paper, we study the ascent of a linear relation everywhere defined on a Banach space X and the related essential ascent spectrum. Some properties and characterization of such spectra are given.
Ezzeddine Chafai, Maher Mnif
doaj