Results 101 to 110 of about 4,150,724 (291)

Powers and direct sums

open access: yesJournal of Mathematical Analysis and Applications, 2014
Abstract This paper investigates when a bounded operator on Hilbert space has the property that its square is similar to to the direct sum of it with itself. A few general results are obtained and the normal operators and unilateral shifts having this property are characterized. Several additional examples are explored.
John B. Conway   +2 more
openaire   +1 more source

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

open access: yesFEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa   +3 more
wiley   +1 more source

Resist the WTO roadshow : sponsored by the Direct Action Network Against Corporate Globalization and Global Exchange [verso]

open access: yes, 1999
Alternate title: Resist the World Trade Organization roadshow. Also sent out as document 12 of 19 in a Direct Action Network (DAN) organizing packet; these documents are contained in a 9 X 12 inch envelope stating approximately 50-100 organizing packets
Direct Action Network (DAN)
core  

Semi-Simple Extension of the (Super) Poincaré Algebra

open access: yesAdvances in High Energy Physics, 2009
A semi-simple tensor extension of the Poincaré algebra is proposed for the arbitrary dimensions D. It is established that this extension is a direct sum of the D-dimensional Lorentz algebra so(D−1, 1) and D-dimensional anti-de Sitter (AdS) algebra so(D−1,
Dmitrij V. Soroka, Vyacheslav A. Soroka
doaj   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

open access: yesFEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Biophysical approaches for studying viral entry

open access: yesFEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

Estimating the First, Hyper-Zagreb Index for Direct Product of F-Sum Graphs

open access: yesMathematics
A chemical graph is an illustration of a chemical compound’s structural formula, where the edges indicate covalent bonding and the vertices depict atoms.
Suha Wazzan, Rauf Irshad
doaj   +1 more source

On the spectra of non-selfadjoint differential operators and their adjoints in direct sum spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
The general ordinary quasidifferential expression Mp of nth order, with complex coefficients and its formal adjoint Mp+ on any finite number of intervals Ip=(ap,bp), p=1,…, N, are considered in the setting of the direct sums of Lwp2(ap ...
Sobhy El-Sayed Ibrahim
doaj   +1 more source

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