Results 11 to 20 of about 524,744 (263)

Recognition of matrices which are sign-regular of a given order and a generalization of oscillatory matrices [PDF]

open access: yesOperators and Matrices, 2021
Summary: In this paper, rectangular matrices whose minors of a given order have the same strict sign are considered and sufficient conditions for their recognition are presented. The results are extended to matrices whose minors of a given order have the same sign or are allowed to vanish.
Alseidi, Rola, Garloff, Jürgen
openaire   +4 more sources

Morphological changes of carbon nanotubes in polyethylene matrices under oscillatory tests as determined by dielectrical measurements

open access: yesComposites Science and Technology, 2011
Abstract By combining a high sensitive dielectric sensor into a parallel plate rheometer, the time evolution of the dielectric properties of polyethylene/carbon nanotube composites was measured in the molten state under oscillatory shear. Composites with single- (SWCNT) or multiwall (MWCNT) carbon nanotubes initially decrease its conductivity ...
Humberto Palza   +2 more
exaly   +5 more sources

Natural Frequencies of Levodopa-Induced Dyskinesia in Parkinson's Disease. [PDF]

open access: yesAnn Clin Transl Neurol
ABSTRACT Objectives Abnormal involuntary movements, known as dyskinesias, are common complications of levodopa treatment in patients with Parkinson's disease and can significantly impair quality of life. The underlying pathophysiology remains unclear, and current therapeutic options are limited.
Isaias IU   +3 more
europepmc   +2 more sources

On oscillatory matrices

open access: yesLinear Algebra and Its Applications, 1970
exaly   +3 more sources

Gas hold-up and bubble diameters in a gassed oscillatory baffled column [PDF]

open access: yes, 2001
In this paper attempts are made to address how bubble behaviour in a batch oscillatory ba'ed column (OBC) contributes to the overall measured enhancement in mass transfer.
Ni, X., Oliveira, Monica
core   +4 more sources

The effect of dietary fibers on the viscoelastic properties of the gluten-free cookie dough

open access: yesBIO Web of Conferences, 2021
The significance of inclusion of associated dietary fibres in various amounts to the formulations of gluten-free rice test mixtures based on rheological profile of hydrated fibrous-flour composite mixtures was investigated.
Krasina Irina   +3 more
doaj   +1 more source

Pocket resonances in low-energy antineutron reactions with nuclei

open access: yesPhysics Letters B, 2021
Upon investigating whether the antineutron-nucleus annihilation cross-sections at very low momenta p satisfy Bethe-Landau's power law of σann(p)∝1/pα, we uncover unexpected regular oscillatory structures in the low antineutron energy region from 0.001 to
Teck-Ghee Lee   +2 more
doaj   +1 more source

Minimizing the distortions in electrophysiological source imaging of cortical oscillatory activity via Spectral Structured Sparse Bayesian Learning

open access: yesFrontiers in Neuroscience, 2023
Oscillatory processes at all spatial scales and on all frequencies underpin brain function. Electrophysiological Source Imaging (ESI) is the data-driven brain imaging modality that provides the inverse solutions to the source processes of the EEG, MEG ...
Deirel Paz-Linares   +23 more
doaj   +1 more source

Effect of hydrodynamics on mass transfer in a gas-liquid oscillatory baffled column [PDF]

open access: yes, 2004
In this paper, we present an experimental study on mass transfer of oxygen into water in an oscillatory baffled column (OBC). The objective of this work is to establish the contribution of individual parameters, such as the size of bubbles and the gas ...
Ni, X.   +2 more
core   +4 more sources

Characteristics of Reconstituted Collagen Fibers from Chicken Keel Cartilage Depends on Salt Type for Removal of Proteoglycans

open access: yesMolecules, 2021
The aim of the presented research was to obtain reconstituted atelocollagen fibers after extraction from poultry cartilage using the pepsin-acidic method in order to remove telopeptides from the tropocollagen.
Anna Pudło   +2 more
doaj   +1 more source

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