Results 51 to 60 of about 458,023 (296)
Bounds for the functional spectrum of operators in a Hilbert space [PDF]
Mathematica MoravicaLet H1 and H2 be Hilbert spaces with the unit operators I1 and I2, respectively, and Ajk be bounded operators acting from Hj into Hk (j, k = 1, 2). We consider the block operator matrices A = (Ajk) and F(z) = diag (Kˆj (z)Ij ), where Kˆ1(z) and Kˆ2(z ...
Gil' Michael
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By dawn or dusk—how circadian timing rewrites bacterial infection outcomes
FEBS Letters, EarlyView.The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo +2 more
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Invasive alien plants at Capraia Island (Italy): distribution and threats to Natura 2000 habitats [PDF]
Plant SociologyIsland ecosystems face significant threats from biological invasions due to their unique biomes. In over a quarter of these ecosystems, the number of alien plants surpasses the total count of native ones, leading to notable impacts.
Alice Misuri +4 more
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Hematopoietic (stem) cells—The elixir of life?
FEBS Letters, EarlyView.The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo +4 more
wiley +1 more source
Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?
FEBS Letters, EarlyView.This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes +3 more
wiley +1 more source
International Journal of Occupational Medicine and Environmental Health, 2013 Introduction: The agricultural tractor is one of the most commonly used vehicles on farms and one of the most prominent sources of noise. This article presents an exemplary assessment of the audible and infrasonic noise levels in the cabins of selected ...
Bartosz Bilski
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Operator Calculus of Quantized Operator [PDF]
Progress of Theoretical Physics, 1952 The notational ambiguities in Feynman's calculus are all remedied here by setting a more natural foundation of the ordered exponential operators, which will be called briefly "expansional" operators in this paper. The essential point to be stressed is that the pure exponential opErator is merely a special case of the more wider class of operators, i.e.,
openaire +2 more sources
Molecular bases of circadian magnesium rhythms across eukaryotes
FEBS Letters, EarlyView.Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
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Some integral operators of Buschman-Erdélyi type
Revista Técnica de la Facultad de Ingeniería, 2011 New integral operators involving the generalized Legendre function Pr-n(z) are introduced. Sorne integrals are evaluated.
N. Virchenco
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Triple Operators of Order n on a Hilbert Space
Tikrit Journal of Pure Science, 2018 In this paper, we introduce a new class of operators on a complex Hilbert space which is called triple operators of order n. An operator is called triple operator of order n if where is the adjoint of the operator .
Elaf Sabah Abdulwahid Rijab
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