Results 101 to 110 of about 10,907,974 (296)

Coherent pair creation as a positron source for linear colliders [PDF]

open access: yes, 1992
We propose a positron source for future linear colliders which uses the mechanism of coherent pair creation process from the collision of a high energy electron beam and a monochromatic photon beam.
Palmer, R.B. (Stanford Linear Accelerator Center, Menlo Park, CA (United States) Brookhaven National Lab., Upton, NY (United States))   +1 more
core  

Linear preservers and quantum information science

open access: yes, 2013
In this article, a brief survey of recent results on linear preserver problems and quantum information science is given. In addition, characterization is obtained for linear operators φ on mn × mn Hermitian matrices such that φ(A ⊗ B) and A ⊗ B have the ...
Fosner, A, Li, CK, Huang, Z, Sze, NS
core   +1 more source

Algebraic structure count of linear phenylenes and their congeners [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
The algebraic structure count of the linear phenylene with h six-membered rings is known to be equal to h + 1. We show that the same expression applies if each four-membered ring in the phenylene is replaced by a linear array consisting of k four ...
IVAN GUTMAN
doaj  

Cascade Structure for Finite Impulse Response Filters and Linear Prediction

open access: yesIngenius: Revista de Ciencia y Tecnología, 2012
This paper presents a complete analysis of the cascade structure for adaptive transversal filters based on adaptive algorithms. The standard structure of the cascade transversal FIR filter is obtained by replacing the whole structure by small ones with ...
Walter Humberto Orozco Tupacyupanqui
doaj   +1 more source

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

On the predictability of common risk factors in the US and UK interest rate swap markets: Evidence from non-linear and linear models. [PDF]

open access: yes
This paper explores the ability of common risk factors to predict the dynamics of US and UK interest rate swap spreads within a linear and a non-linear framework.
Costas Milas   +2 more
core  

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Restricted Likelihood Ratio Testing in Linear Mixed Models with General Error Covariance Structure [PDF]

open access: yes, 2011
We consider the problem of testing for zero variance components in linear mixed models with correlated or heteroscedastic errors. In the case of independent and identically distributed errors, a valid test exists, which is based on the exact finite ...
Sonja Greven   +5 more
core   +1 more source

Identification of a Shiga toxin A‐derived peptide internalized into Gb3 receptor‐bearing cells via interaction with the Shiga toxin B subunit

open access: yesFEBS Letters, EarlyView.
The process of internalization of the Shiga toxin A subunit via formation of a complex with the Shiga toxin B subunit, which specifically binds to the Gb3 receptor. The peptide is designed to act as a carrier of drugs into cancer cells. Here, we explored the potential of peptides derived from the catalytic A subunit of Shiga toxin (STxA) to be drug ...
Giulia Opassi   +6 more
wiley   +1 more source

Linear structure taxonomy with the account of environmental polystructures impact

open access: yesMATEC Web of Conferences, 2018
One of the specific features of transportation facilities design is the necessity to account changing environmental conditions in considerable distances along the track.
Bobrova Tatyana, Vorobyev Valeriy
doaj   +1 more source

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