Results 21 to 30 of about 2,427,943 (336)

Can variants, reinfection, symptoms and test types affect COVID-19 diagnostic performance? A large-scale retrospective study of AG-RDTs during circulation of Delta and Omicron variants, Czechia, December 2021 to February 2022

open access: yesEurosurveillance, 2023
Background The sensitivity and specificity of selected antigen detection rapid diagnostic tests (AG-RDTs) for SARS-CoV-2 were determined in the unvaccinated population when the Delta variant was circulating.
Ruth Tachezy
doaj   +1 more source

Autocyclic Secondary Channels Stabilize Deltaic Islands Undergoing Relative Sea Level Rise

open access: yesGeophysical Research Letters, 2022
Understanding what sets the size and stability of deltaic islands is critical for predicting how deltas will respond to sea level rise. Models of overbank sedimentation produce an exponentially decaying sedimentation profile, seemingly incompatible with ...
Gerard Salter, Michael P. Lamb
doaj   +1 more source

CONSUMERS’ PREFERENCE TOWARD ISLAMIC BANKING

open access: yesTazkia Islamic Finance and Business Review, 2017
Objective - This research aims to provide empirical evidence on the factors motivating consumers to save in Islamic banking.Methods - The one sample t-test is employed to test hypothesis.
delta khairunnisa
doaj   +1 more source

Delta and “Boom”: Novels of Mario Vargas Llosa through the Prism of Stylometry [PDF]

open access: yesЛитература двух Америк, 2023
The paper deals with the poetics of the novels of the Peruvian writer Mario Vargas Llosa and the evolution of his style. To solve research problems, it is used the Delta method which is the most authoritative and reliable stylometric tool that allows you
Boris V. Kovalev
doaj   +1 more source

Delta hepatitis [PDF]

open access: yesExpert Review of Anti-infective Therapy, 2009
Hepatitis delta virus (HDV) is a defective RNA virus that requires HBsAg for replication and transmission. It can cause acute or chronic hepatitis. Chronic infection with HDV is one of the most severe and difficult to treat forms of viral hepatitis. It has been estimated that there is a total of 15-20 million HDV carriers in the world.
openaire   +4 more sources

DWT/PCA face recognition using automatic coefficient selection [PDF]

open access: yes, 2008
In PCA-based face recognition, there is often a trade-off between selecting the most relevant parts of a face image for recognition and not discarding information which may be useful.
Amira, A, Nicholl, P
core   +1 more source

Population Genomics of SARS-CoV-2 in the Constituent Entities of Siberian and Far Eastern Federal Districts

open access: yesПроблемы особо опасных инфекций, 2023
The aim of the study was to analyze the genetic structure of populations and the patterns of evolutionary variability of the novel coronavirus infection in the Siberian and Far Eastern Federal Districts. Materials and methods.
L. V. Mironova   +8 more
doaj   +1 more source

Electroencephalographic Rhythmic Delta Activities in Three Cases

open access: yesArchives of Epilepsy, 2021
Intermittent rhythmic delta activities are electroencephalographic discharges with uniform morphology, at a frequency of 4 Hz or less, containing at least six cycles, lost by eye opening and stimulation.
Dilara MERMİ DİBEK   +2 more
doaj   +1 more source

The Universal Askey-Wilson Algebra [PDF]

open access: yes, 2011
In 1992 A. Zhedanov introduced the Askey-Wilson algebra AW=AW(3) and used it to describe the Askey-Wilson polynomials. In this paper we introduce a central extension $\Delta$ of AW, obtained from AW by reinterpreting certain parameters as central ...
Terwilliger, Paul
core   +5 more sources

Prognostic Value of Admission-to-Discharge Change in Integral Congestion Assessment for Predicting Adverse Outcomes in Patients with Decompensated Heart Failure [PDF]

open access: yesArchives of Razi Institute, 2022
This study was performed to evaluate the prognostic value of relative changes from admission to discharge (Δ%) of integrated congestion assessment to predict adverse outcomes in patients with irreversible heart failure (HF) during a one-year follow-up ...
Z Kobalava   +6 more
doaj   +1 more source

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