Abstract: A single sensor capable of detecting both airflow in spirometry and the full range of sound frequencies needed to track clinically relevant breath sounds is provided. The airflow sensor includes a movable flap with one or more integrated strain gauges for measuring displacement and vibration. The airflow sensor is inherently bidirectional. The sensor is an elastic flap airflow sensor that is capable of detecting data needed for both spirometry and auscultation measurements. The sensor is sterilizable and designed for the measurement of human respiratory airflow. The sterilizable sensor is also suitable for non-medical fluid flow metering applications. Additional devices such as sensors for the ambient level of various chemicals, sensors for temperature, sensors for humidity and microphones, may be affixed to the flap. When the strain gauge is placed in a conventional Wheatstone bridge configuration, the sensor can provide the airflow measurements needed for medical spirometry.

Abstract: A single sensor capable of detecting both airflow in spirometry and the full range of sound frequencies needed to track clinically relevant breath sounds is provided. The airflow sensor includes a movable flap with one or more integrated strain gauges for measuring displacement and vibration. The airflow sensor is inherently bidirectional. The sensor is an elastic flap airflow sensor that is capable of detecting data needed for both spirometry and auscultation measurements. The sensor is sterilizable and designed for the measurement of human respiratory airflow. The sterilizable sensor is also suitable for non-medical fluid flow metering applications. Additional devices such as sensors for the ambient level of various chemicals, sensors for temperature, sensors for humidity and microphones, may be affixed to the flap. When the strain gauge is placed in a conventional Wheatstone bridge configuration, the sensor can provide the airflow measurements needed for medical spirometry.

Abstract: A sensor capable of detecting both airflow in spirometry and a full range of sound frequencies is provided. The airflow sensor includes a movable flap with one or more integrated strain gauges for measuring displacement and vibration. The sensor may be a bidirectional elastic flap airflow sensor that is capable of providing data needed for both spirometry and auscultation measurements. The sensor is provided in connection with a software module that analyzes sensor output waveforms and provides for correction functions that correct for certain non-linear response functions of the flap. The correction functions are also suitable for non-medical fluid flow metering applications. Additional devices may also be affixed to the flap, such as sensors for the ambient level of various chemicals, sensors for temperature, sensors for humidity and microphones.

Abstract: A sensor capable of detecting both airflow in spirometry and a full range of sound frequencies is provided. The airflow sensor includes a movable flap with one or more integrated strain gauges for measuring displacement and vibration. The sensor may be a bidirectional elastic flap airflow sensor that is capable of providing data needed for both spirometry and auscultation measurements. The sensor is provided in connection with a software module that analyzes sensor output waveforms and provides for correction functions that correct for certain non-linear response functions of the flap. The correction functions are also suitable for non-medical fluid flow metering applications. Additional devices may also be affixed to the flap, such as sensors for the ambient level of various chemicals, sensors for temperature, sensors for humidity and microphones.

Abstract: A single sensor capable of detecting both airflow in spirometry and the full range of sound frequencies needed to track clinically relevant breath sounds is provided. The airflow sensor includes a movable flap with one or more integrated strain gauges for measuring displacement and vibration. The airflow sensor is inherently bidirectional. The sensor is an elastic flap airflow sensor that is capable of detecting data needed for both spirometry and auscultation measurements. The sensor is sterilizable and designed for the measurement of human respiratory airflow. The sterilizable sensor is also suitable for non-medical fluid flow metering applications. Additional devices such as sensors for the ambient level of various chemicals, sensors for temperature, sensors for humidity and microphones, may be affixed to the flap. When the strain gauge is placed in a conventional Wheatstone bridge configuration, the sensor can provide the airflow measurements needed for medical spirometry.

Abstract: Thermoplastic multicomponent articles are shown wherein the components comprise a polymer matrix wherein one component contains at least one uniformly distributed substantially unreactive low molecular weight, guest molecule or compound which imparts different properties to the component.

Abstract: The present invention is generally directed to multi-component rubber-polyester composites including a sidechain containing copolyester as a compatibilizing component.

Abstract: Multi-component composites containing a linear polyester of an alkyl glycol and an aromatic diacid as one component, rubber as a second component, and a third component which is a compatibilizing polyester (polystyrene copolymer).

Abstract: Provided is a method for stabilizing an optical recording medium containing a polycarbonate substrate. The method comprises treating the substrate material in a high temperature, high humidity environment for an extended period of time. Dramatic improvements in the useful life of the optical recording medium in which the treated polycarbonate substrate is used have been found to result.

Abstract: A sulfoalkyl derivative of N-substituted hydroxyethylated polybenzimidazole is disclosed, produced by the reaction of an N-substituted hydroxyethylated polybenzimidazole anion with a sultone. The N-substituted hydroxyethylated polybenzimidazole polymer is first reacted with an alkali hydride to produce the anion of N-substituted hydroxyethylated polybenzimidazole. The N-substituted hydroxyethylated polybenzimidazole anion is then reacted with the sultone to produce a sulfoalkyl derivative of the N-substituted hydroxyethylated polybenzimidazole polymer. These derivatives find great use as ion exchange devices.