جستجوی مقالات مرتبط با کلیدواژه « پایش محیطی » در نشریات گروه « کتابداری و مدیریت اطلاعات »

Biodeterioration of library materials is a worldwide problem in archives and libraries. Investigation of biological agents (quantitatively and qualitatively) as well as environmental factors that affect the survival and persistence of microorganisms, are the main parts of preventive conservation. Therefore, we studied the biological pollution in repositories and other parts of the Documentation Center and Library of the Cultural Heritage and Tourism Research Institute and evaluated the environmental factors (temperature, relative humidity) in order to preserve paper works.

Method and Research Design: 

Quantitative and qualitative investigations of biological contaminants (bacteria and fungi) were performed using sedimentation method (passive method). In addition, environmental factors (temperature and relative humidity) were monitored in audiovisual and records repositories.

Relative humidity and temperature variation rates were high and non-standard in the audiovisual and records repositories. Biological studies showed that the fungal and bacterial contamination level in the library repository was higher than the alert level. The most frequent bacterial isolates were Bacillus and Staphylococcus and the dominant fungal isolates belonged to the genera Aspergillus, Penicillium, Alternaria, Cladosporium, most of which have a high potential to produce decomposing enzymes.

To identify factors causing damage to archival as well as library materials held in government departments’ repositories, in order to develop criteria for preservation practices consistent with international standards, thereby diminishing the costs of future disinfecting and repair, in particular damages caused by human factors.Method/Research Design: Pollution data resulting from the monitoring of, and sampling from, external repositories of 17 departments, and environmental conditions of 63 repositories, was identified and compared with CFU. Suggestions were made for the improvement of the situation in each the organization. The temperature, humidity and light levels of the repositories were measured. Also, the number of micro organisms in the air were examined and checked against the standards, then tagged and analyzed using SPSS application. As the data did not follow a normal distribution, Spearman correlation was employed to correlate factors such as light and temperature with the presence of fungi. Standards of light levels, humidity and temperature are not met in the majority of repositories. Lack of meaningful correlation between humidity and fungi is an indication of the fact that humidity in 87% of repositories is below standard.

Considering basic concepts of preventive preservation and measuring the most importantin"uential indicators in proposing an optimum method for preservation and maintenanceof historical and cultural works, this paper tries to present methods for properpreservation of historical-cultural works existing in the repository of Malek NationalMuseum.ects of environmental conditions including relative humidity, temperature, light,gas pollutants and solid particles in the environment of the Malek National Museum andalso the consequences of these factors such as acidity changes in paper works, and theof fungi and proper environmental conditions for the development of microorganisms have been experimentally investigated. e aim of conducting these experiments was to compare the extent of each environmental factor in the environment of the repository room of the museum with the standards for environmental conditions in the Malek National Museum and to eventually determine the damaging factors in this museum. To do so, all in"uential environmental factors such as light, relative humidity, temperature, environmental pollutants, and microorganisms were monitored in a specic time range using instrumental analysis methods.