Results 1 to 10 of about 4,491,688 (341)

Smoking, distress and COVID-19 in England: Cross-sectional population surveys from 2016 to 2020

open access: yesPreventive Medicine Reports, 2021
Changes in the prevalence of psychological distress among smokers during the COVID-19 pandemic in England may exacerbate existing health inequalities. This study examined the prevalence of psychological distress among smokers following the onset of the ...
Loren Kock   +5 more
doaj   +1 more source

Does immediate smart feedback on therapy adherence and inhalation technique improve asthma control in children with uncontrolled asthma? A study protocol of the IMAGINE I study

open access: yesTrials, 2020
Background Many asthmatic children suffer from uncontrolled asthma with frequent exacerbations, despite an optimal treatment plan using inhalation medication.
Esther T. Sportel   +6 more
doaj   +1 more source

Spectrum Analysis of Contact Network for Public Policy in a Pandemic

open access: yesIEEE Access, 2022
In a pandemic, in order to slow down the spread of the virus, protect national health, and maintain the normal operation of economic activities, countries around the world will formulate public policies to limit the number of citizens that can gather ...
Qi Xu
doaj   +1 more source

Can Pediatricians Assess Exercise-Induced Bronchoconstriction From Post-exercise Videos?

open access: yesFrontiers in Pediatrics, 2020
Objective: Exercise-induced bronchoconstriction (EIB) is a highly prevalent morbidity of childhood asthma and defined by a transient narrowing of the airways during or after physical exercise.
N. Lammers   +8 more
doaj   +1 more source

Microwave Spectroscopy as a Potential Tool for Color Grading Diamonds

open access: yesEnergies, 2021
A diamond’s color grading is a dominant property that determines its market value. Its color quality is dependent on the light transmittance through the diamond and is largely influenced by nitrogen contamination, which induces a yellow/brown tint within
Yossi Rabinowitz   +4 more
doaj   +1 more source

Bio-Inspired Radio-Frequency Source Localization Based on Cochlear Cross-Correlograms

open access: yesFrontiers in Neuroscience, 2021
This paper describes a bio-inspired radio frequency (RF) scene analysis system based on cross-correlating the outputs of two single-chip RF spectrum analyzers.
Yingying Wang   +2 more
doaj   +1 more source

A Current Noise Cancellation Method Based on Fractional Linear Prediction for Bearing Fault Detection

open access: yesSensors, 2023
The stator current in an induction motor contains a large amount of information, which is unrelated to bearing faults. This information is considered as the noise component for the detection of bearing faults.
Kaijin Xu, Xiangjin Song
doaj   +1 more source

Temporal Flow Characteristics of Three-Dimensional Centrifugal Impeller Suction System at Vacuum Conditions [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2023
Temporal flow characteristics of a 3D centrifugal impeller suction system were numerically studied in vacuum conditions. The blockage of the high-speed rotating impeller appeared, which greatly dropped the suction of the layer suction device.
Y. Li   +5 more
doaj   +1 more source

Spectrum Analysis Enabled Periodic Feature Reconstruction Based Automatic Defect Detection System for Electroluminescence Images of Photovoltaic Modules

open access: yesMicromachines, 2022
Electroluminescence (EL) imaging is a widely adopted method in quality assurance of the photovoltaic (PV) manufacturing industry. With the growing demand for high-quality PV products, automatic inspection methods based on machine vision have become an ...
Jiachuan Yu   +8 more
doaj   +1 more source

Reading Tapes Backwards: A Legitimate Approach to Saving Time and Money in Digitization Projects?

open access: yesApplied Sciences, 2021
Audio carriers are subject to a fast and irreversible decay. In order to save valuable historical recordings, the audio signal and other relevant information can be extracted from the source audio document and stored on another medium, normally a ...
Federica Bressan   +5 more
doaj   +1 more source

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