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Scott, G (1994) Moisture, ventilation and mould growth. Preventive conservation: practice, theory and research. Preprints of the contributions to the Ottawa Congress, 12-16 September 1994 . pp. 149-153.

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Describes some of the factors affecting the condition of organic materials in tropical regions. Mold growth is not always a major problem in buildings in tropical climates. Ventilation has been suggested as a possible reason for this, but evidence is anecdotal. It is proposed that for air movement to disrupt growth it must act on known limiting factors. The "available" moisture (water activity) in an organic material responds to changes in vapor pressure, that is, relative humidity, in the atmosphere. The temperature and moisture content of air next to the surface of an object are determined by: 1) the initial condition of air outside a building; 2) the degree to which that condition is modified by the temperature and moisture content of the building structure; and 3) how the air is moved into and around internal spaces by ventilation. Whether growth then proceeds, and at what rate, is determined by the physiological requirements of individual mold species. Ventilation may be a factor in restricting mold growth because it can disrupt the stability of surface layers of air.

Item Type: Article
Uncontrolled Keywords: Mould; Tropical climate; Museum; Collection; Climate control
Subjects: English > Damage functions > Biological damage
Depositing User: Anna Samuelsson
Date Deposited: 18 Mar 2008 10:50
Last Modified: 29 Dec 2016 14:29

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