The feasibility and outcome of early introduction of a heat and moisture exchange device (HME) after laryngectomy surgery

2018 ◽  
Author(s):  
Louise Barrett
Keyword(s):  
Moisture Exchange ◽  
Early Introduction ◽  
Heat And Moisture

scholarly journals Determining the effective drop size when modeling heat and moisture exchange in the spray chamber

2019 ◽  
Vol 1382 ◽  
pp. 012081
Author(s):  
A Ch Zandaraev ◽  
R Sh Mansurov ◽  
T A Rafalskaya ◽  
N N Fedorova
Keyword(s):  
Drop Size ◽  
Spray Chamber ◽  
Moisture Exchange ◽  
Heat And Moisture

Natural Polymers as Heat and Moisture Exchange Devices for Medical Applications

2014 ◽  
Vol 96 ◽  
pp. 39-44
Author(s):  
Brais Vazquez ◽  
Alessia Nicosia ◽  
Franco Belosi ◽  
Gianni Santachiara ◽  
Paolo Monticelli ◽  
...  
Keyword(s):  
Water Vapour ◽  
Freeze Drying ◽  
Flow Conditions ◽  
Natural Polymers ◽  
Short Term ◽  
Moisture Exchange ◽  
Cyclic Flow ◽  
Porous Matrices ◽  
Heat And Moisture

In recent decades, Heat and Moisture Exchange (HME) devices have been employed increasingly for short-term use in anaesthesia and long-term use in intensive care units. These devices work as heat exchangers, accumulating the patient’s expired heat and moisture and returning them to the patient during the inhalation phase. Porous matrices obtained from freeze-drying of blends of natural polymers exhibit high open and interconnected porosity and water vapour intake characteristics which make them possible candidates for HME devices. Preliminary tests were conducted on specimens made of gelatine blended with chitosan and treated with a non-toxic cross-linking agent. The tests were carried out in cyclic flow conditions with saturated and dried air. Results show water vapour retention comparable with accepted standards for HME devices.

scholarly journals A Reappraisal of the Multiple Gauze Heat and Moisture Exchanger

1973 ◽  
Vol 1 (5) ◽  
pp. 428-432 ◽  
Author(s):  
C. A. Shanks ◽  
C., A. Sara
Keyword(s):  
Water Vapour ◽  
Considerable Increase ◽  
High Water ◽  
Heat And Moisture Exchanger ◽  
Water Vapour Content ◽  
Moisture Exchanger ◽  
Moisture Exchange ◽  
Controlled Ventilation ◽  
Heat And Moisture

The multiple gauze heat and moisture exchanger was assessed under standardized conditions, at five levels of predetermined fresh gas humidity. As predicted theoretically, the unit functioned best when presented with fresh gases with high water vapour content. The ordinary unit moistened arid gases during inspiration to a level unacceptable for prolonged use. Unheated simple humidification systems dampen anhydrous stored gases and combined with the standard condenser-humidifier produce a microclimate suitable for entry into the trachea during spontaneous or controlled ventilation. Quadrupling the number of gauzes improved heat and moisture exchange with all but the saturated fresh gases. However, there was a considerable increase in weight.

A heat and moisture exchange mask to reduce exercise induced bronchoconstriction severity

2018 ◽  
Author(s):  
Anna Jackson ◽  
James Hull ◽  
James Hopker ◽  
William Gowers ◽  
John Dickinson
Keyword(s):  
Moisture Exchange ◽  
Exercise Induced ◽  
Heat And Moisture

Heat and moisture exchange of newly denuded rock massif with a chamber of an underground building

1984 ◽  
Vol 47 (2) ◽  
pp. 945-947
Author(s):  
O. A. Kremnev ◽  
V. Ya. Zhuravlenko ◽  
V. A. Shelimanov ◽  
E. M. Kozlov
Keyword(s):  
Rock Massif ◽  
Moisture Exchange ◽  
Heat And Moisture

Contribution of Tropical Cyclones to Global Very Deep Convection

2014 ◽  
Vol 27 (11) ◽  
pp. 4313-4336 ◽  
Author(s):  
Haiyan Jiang ◽  
Cheng Tao
Keyword(s):  
Tropical Cyclones ◽  
Deep Convection ◽  
Convective Available Potential Energy ◽  
Tropical Rainfall Measuring Mission ◽  
Precipitable Water ◽  
Moisture Exchange ◽  
Derived Properties ◽  
Trmm Precipitation ◽  
The Tropics ◽  
Heat And Moisture

Abstract Based on the 12-yr (1998–2009) Tropical Rainfall Measuring Mission (TRMM) precipitation feature (PF) database, both radar and infrared (IR) observations from TRMM are used to quantify the contribution of tropical cyclones (TCs) to very deep convection (VDC) in the tropics and to compare TRMM-derived properties of VDC in TCs and non-TCs. Using a radar-based definition, it is found that the contribution of TCs to total VDC in the tropics is not much higher than the contribution of TCs to total PFs. However, the area-based contribution of TCs to overshooting convection defined by IR is 13.3%, which is much higher than the 3.2% contribution of TCs to total PFs. This helps explain the contradictory results between previous radar-based and IR-based studies and indicates that TCs only contribute disproportionately large amount of overshooting convection containing mainly small ice particles that are barely detected by the TRMM radar. VDC in non-TCs over land has the highest maximum 30- and 40-dBZ height and the strongest ice-scattering signature derived from microwave 85- and 37-GHz observations, while VDC in TCs has the coldest minimum IR brightness temperature and largest overshooting distance and area. This suggests that convection is much more intense in non-TCs over land but is much deeper or colder in TCs. It is found that VDC in TCs usually has smaller environmental shear but larger total precipitable water and convective available potential energy than those in non-TCs. These findings offer evidence that TCs may contribute disproportionately to troposphere-to-stratosphere heat and moisture exchange.

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