Absorption of Carbon Dioxide at High Partial Pressures in Aqueous Solutions of Di-isopropanolamine

2005 ◽  
Vol 44 (19) ◽  
pp. 7451-7457 ◽  
Author(s):  
Fernando Camacho ◽  
Sebastián Sánchez ◽  
Rafael Pacheco ◽  
Antonio Sánchez ◽  
María D. La Rubia
Keyword(s):  
Carbon Dioxide ◽  
Aqueous Solutions ◽  
Partial Pressures

Inspiratory Speech as a Management Option for Spastic Dysphonia

1992 ◽  
Vol 101 (5) ◽  
pp. 375-382 ◽  
Author(s):  
Gordon A. Harrison ◽  
Richard H. Troughear ◽  
Pamela J. Davis ◽  
Alison L. Winkworth
Keyword(s):  
Carbon Dioxide ◽  
Gas Exchange ◽  
Voice Quality ◽  
Management Option ◽  
Communication Problems ◽  
Partial Pressures ◽  
The Subject ◽  
And Control ◽  
Laryngeal Resistance

A case study is reported of a subject who has used inspiratory speech (IS) for 6 years as a means of overcoming the communication problems of long-standing adductor spastic dysphonia (ASD). The subject was studied to confirm his use of IS, determine the mechanisms of its production, investigate its effects on ventilatory gas exchange, and confirm that it was perceptually preferable to ASD expiratory speech (ES). Results showed that the production and control of a high laryngeal resistance to airflow were necessary for usable IS. Voice quality was quantitatively and perceptually poor; however, the improved fluency and absence of phonatory spasm made IS the preferred speaking mode for both the listener and the speaker. Transcutaneous measurements of the partial pressures of oxygen and carbon dioxide in the subject's blood were made during extended speaking periods. These measurements indicated that ventilation was unchanged during IS, and that ventilation during ES was similar to the “hyperventilation” state of normal speakers. The reasons for the absence of phonatory spasm during IS are discussed, and the possibility of its use as a noninvasive management option for other ASD sufferers is addressed.

Carbon dioxide absorption in aqueous solution of potassium glycinate + 2-amino-2-methyl-1-propanol as new absorbents

RSC Advances ◽  
2016 ◽  
Vol 6 (67) ◽  
pp. 62612-62623 ◽  
Author(s):  
Mohammad Ehsan Hamzehie ◽  
Hesam Najibi
Keyword(s):  
Carbon Dioxide ◽  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Carbon Dioxide Absorption

Aqueous solutions of potassium glycinate and mixtures with 2-amino-2-methyl-1-propanol (AMP) are investigated as new absorbents for carbon dioxide absorption.

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