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Stridor (from Latin 'creaking/grating noise') is an extra-thoracic high-pitched breath sound resulting from turbulent air flow in the larynx or lower in the bronchial tree. It is different from a stertor, which is a noise originating in the pharynx. Stridor is a physical sign which is caused by a narrowed or obstructed airway.
Aqueous biphasic systems (ABS) or aqueous two-phase systems (ATPS) are clean alternatives for traditional organic-water solvent extraction systems.. ABS are formed when either two polymers, one polymer and one kosmotropic salt, or two salts (one chaotropic salt and the other a kosmotropic salt) are mixed at appropriate concentrations or at a particular temperature.
The first issue of Vector was published in 1958 under the editorship of E. C. Tubb. [3] The publication was established as an irregular newsletter for members of the BSFA, founded in the same year, but "almost at once it began to produce reviews and essays, polemics and musings, about the nature and state of science fiction."
Biphasic, meaning having two phases, may refer to: Phase (matter) , in the physical sciences, a biphasic system, e.g. one involving liquid water and steam Biphasic sleep , a nap or siesta in addition to the usual sleep episode at night
The current mainstay of treatment is therapy-based. Specialist breathing techniques, most commonly termed biphasic breathing techniques or EILOBI are recommended to reduce turbulent inspiratory airflow and thus reduce chance of laryngeal closure. [18] Direct laryngeal visualisation during exercise to deliver biofeedback has been employed with ...
The co-editor of the science fiction journal Extrapolation and a professor of English at the University of Georgia, Isaiah Lavender III, notes the usefulness of the dictionary for academic analysis of issues, saying "Having these origin dates in mind can help a student or scholar build a framework to analyze something like the concept of the ...
A special type of wheeze is stridor. Stridor — the word is from the Latin, strīdor [9] — is a harsh, high-pitched, vibrating sound that is heard in respiratory tract obstruction. Stridor heard solely in the inspiratory phase of respiration usually indicates an upper respiratory tract obstruction, "as with aspiration of a foreign body (such ...
Laryngospasm is a primitive protective airway reflex that functions to protect against aspiration.However, it may be detrimental if there is sustained closure of the glottis resulting in blockage of respiration that hinders the free flow of air.