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Infrared Colloidal Quantum Dot Edge Emitting Lasers Integrated on Silicon
Advanced Optical Materials, EarlyView.In this work, the first monolithic integration of Pb‐chalcogenide CQDs in an edge‐emitting DFB laser cavity onto a Si/SiO2 substrate has been demonstrated. The optimizations of SiO2 layer thickness, engineering of the grating duty cycle, and implementing λ/4 phase shift resulted in the achievement of spectrally pure, single‐mode lasing at 1650 nm with ...
Hamed Dehghanpour Baruj +5 more
wiley +1 more source
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Comparison of Two Forced Oscillation Techniques
Respiration, 1984The forced oscillation technique developed by Korn et al. in 1979 (Siregnost FD 5) overestimates the measured resistances by about 20% in the range of resistance values met in healthy subjects and in patients. This is due to an overestimation of the impedance of the side tubing used for calibration.
M, Cauberghs, K P, Van de Woestijne
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Forced Oscillation Technique in Spinal Muscular Atrophy
Chest, 2014Spinal muscular atrophy (SMA) causes respiratory compromise that is difficult to assess in young children. The forced oscillation technique (FOT) is commercially available for children as young as 2 years of age and is nonvolitional. The aim of this study was to assess the usefulness of FOT in young children with SMA.Children with SMA aged < 10 years ...
Gauld, L.M. +3 more
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Optoelectronic Frequency Stabilization Techniques in Forced Oscillators
2021Forced frequency stabilization techniques of self-injection locking (SIL) and self-phase locked loop (SPLL) have been demonstrated to be effective for phase noise reduction. In SIL scheme, a portion of the oscillator output is directly injected back to the oscillator after passing through a long delay while in SPLL, the delayed signal is used to ...
Li Zhang, Afshin S. Daryoush
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Forced oscillation technique may identify severe asthma
The Journal of Allergy and Clinical Immunology: In Practice, 2019Background: Fixed airflow obstruction in severe asthma is usually assessed by spirometry. However, the role of the forced oscillation technique (FOT) in severe asthma is unknown. We hypothesised that FOT would be useful to diagnose severe asthma and discriminate it from non-severe asthma. Aims: In this cross-sectional study, we assessed the usefulness
Toshihiro, Shirai +7 more
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2014
Forced oscillation technique (FOT) is a noninvasive approach for assessing the mechanical properties of the respiratory system. The technique is based on applying a low-amplitude pressure oscillation to the airway opening and computing respiratory impedance defined as the complex ratio of oscillatory pressure and flow. Impedance data are interpreted in
Daniel Navajas +2 more
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Forced oscillation technique (FOT) is a noninvasive approach for assessing the mechanical properties of the respiratory system. The technique is based on applying a low-amplitude pressure oscillation to the airway opening and computing respiratory impedance defined as the complex ratio of oscillatory pressure and flow. Impedance data are interpreted in
Daniel Navajas +2 more
openaire +1 more source
Forced oscillation technique: comparison of two devices
Journal of Applied Physiology, 1985The respiratory impedances in healthy subjects and patients with advanced obstructive lung disease were measured between 2 and 32 Hz, using two forced oscillation techniques: the setup used previously by Grimby et al. (J. Clin. Invest. 47: 1455–1465, 1968) and a modified device in which the pneumotachograph is replaced by a 2-m-long tube and the ratio
H, Franken +4 more
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Paediatric Respiratory Reviews, 2006
FOT may hold the promise of improving the diagnosis of airway obstruction, but may be even better in quantifying the magnitude of airway reversibility and hyper-reactivity, helping in the adjustment of therapy, and monitoring disease progression in young children.
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FOT may hold the promise of improving the diagnosis of airway obstruction, but may be even better in quantifying the magnitude of airway reversibility and hyper-reactivity, helping in the adjustment of therapy, and monitoring disease progression in young children.
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The Forced Oscillation Technique in Paediatric Respiratory Practice
Paediatric Respiratory Reviews, 2016The Forced Oscillation Technique (FOT) is a lung function modality based on the application of an external oscillatory signal in order to determine the mechanical response of the respiratory system. The method is in principal noninvasive and requires minimal patient cooperation, which makes it suitable for use in young paediatric patients.
Eleni, Skylogianni +3 more
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Two-point calibration procedure of the forced oscillation technique
Medical and Biological Engineering and Computing, 1997The forced oscillation technique is usually calibrated by loading the measuring device with a known impedance. A correction function is calculated, relating the measured and reference impedances at each frequency. However, this one point calibration procedure does not account for transducer asymmetry.
K N, Desager +2 more
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