Results 41 to 50 of about 436,125 (330)

The effects of industrial noise of higher spectrum on the workers’ auditory perception abilities [PDF]

open access: yesVojnosanitetski Pregled, 2016
Background/Aim. Results of previous studies gave support to the idea that machines in power plants produce noise of different levels of loudness and frequency, and that it could cause deterioration of the hearing ability of workers.
Mihailović Dobrivoje   +3 more
doaj   +1 more source

Absolute thresholds in vibrotactile signal detection [PDF]

open access: yesPerception & Psychophysics, 1971
Vibrotactile signals were presented to S’s index fingertip during a specified observation interval at a signal probability of either .30 or .70. The S’s task was to report the presence or absence of the signal as quickly as possible and to estimate the magnitude of the sensory event experienced during the observation interval.
George A. Gescheider   +3 more
openaire   +2 more sources

Analyzing soccer match sprint distances: A comparison of GPS-based absolute and relative thresholds

open access: yesBiology of Sport
This study compared the most common absolute sprint threshold (> 25.2 km/h) with relative and individualized thresholds (> 70%, > 75%, > 80%, > 85% and > 90% of peak match speed).
Hugo Silva   +4 more
doaj   +1 more source

Oxygenation thresholds for invasive ventilation in hypoxemic respiratory failure: a target trial emulation in two cohorts

open access: yesCritical Care, 2023
Background The optimal thresholds for the initiation of invasive ventilation in patients with hypoxemic respiratory failure are unknown. Using the saturation-to-inspired oxygen ratio (SF), we compared lower versus higher hypoxemia severity thresholds for
Christopher J. Yarnell   +15 more
doaj   +1 more source

Critical Line in Random Threshold Networks with Inhomogeneous Thresholds [PDF]

open access: yes, 2007
We calculate analytically the critical connectivity $K_c$ of Random Threshold Networks (RTN) for homogeneous and inhomogeneous thresholds, and confirm the results by numerical simulations. We find a super-linear increase of $K_c$ with the (average) absolute threshold $|h|$, which approaches $K_c(|h|) \sim h^2/(2\ln{|h|})$ for large $|h|$, and show that
arxiv   +1 more source

Flow‐based immunomagnetic enrichment of circulating tumor cells from diagnostic leukapheresis product

open access: yesMolecular Oncology, EarlyView.
The number of circulating tumor cells obtained from prostate cancer patients was increased approximately 5‐fold compared to regular CellSearch when processing 2 mL diagnostic leukapheresis material aliquots and increased by 44‐fold when processing 20 mL DLA aliquots using the flow enrichment target capture Halbach‐array.
Michiel Stevens   +8 more
wiley   +1 more source

Accurate FDG PET tumor segmentation using the peritumoral halo layer method: a study in patients with esophageal squamous cell carcinoma

open access: yesCancer Imaging, 2018
Background In a previous study, FDG PET tumor segmentation (SegPHL) using the peritumoral halo layer (PHL) was more reliable than fixed threshold methods in patients with thyroid cancer. We performed this study to validate the reliability and accuracy of
Sungmin Jun, Jung Gu Park, Youngduk Seo
doaj   +1 more source

A comparative study of circulating tumor cell isolation and enumeration technologies in lung cancer

open access: yesMolecular Oncology, EarlyView.
Lung cancer cells were spiked into donor blood to evaluate the recovery rates of the following circulating tumor cell (CTC) enrichment technologies: CellMag™, EasySep™, RosetteSep™, Parsortix® PR1, and Parsortix® Prototype systems. Each method's advantages and disadvantages are described.
Volga M Saini   +11 more
wiley   +1 more source

Magnitude of the contralateral efferent olivocochlear effect as a function of the frequency

open access: yesJournal of Otology, 2022
Background: The activation of the medial olivocochlear reflex reduces the cochlear gain, which is manifested perceptually as decreased auditory sensitivity.
Fernanda Anza Miranda   +1 more
doaj  

Convergent expansions of eigenvalues of the generalized Friedrichs model with a rank-one perturbation [PDF]

open access: yesarXiv, 2020
We study the existence of eigenvalues of the generalized Friedrichs model $H_\mu(p)$, with a rank-one perturbation, depending on parameters $\mu>0$ and $p\in\mathbb{T}^2$, and found an absolutely convergent expansions for eigenvalues at $\mu(p)$, the coupling constant threshold.
arxiv  

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