scholarly journals High Air Relative Humidity and Lighting Modes Govern Mould Growths on Damp Soil Ruins’ Surface in High-Humidity Regions

2020 ◽  
Vol 172 ◽  
pp. 23010
Author(s):  
Yonghui Li ◽  
Weilun Zhang ◽  
Ruobin Wu ◽  
Xinyuan Dang ◽  
Shuichi Hokoi

Mould growth, caused by favourable hygrothermal environment like high relative humidity, proper temperature and other environmental variables, is one of the most severe hazards to soil ruins in high-humidity regions. Nevertheless, the effects of these variables on mould growth under extremely high humidity conditions remain elusive. In our previous research, samples from Wenzhou Qiaolou soil ruin were used to estimate the effects of two factors, ventilation and lighting modes, in unison. Based on that, a subsequent analysis has been conducted to assess mould growth differences with air relative humidity and lighting modes. We found that the extremely stable high-humidity environment (99.9%) had a significantly inhibitory effect on mould growth of damp surface of soil ruins. This paper also gives suggestions on the management of soil ruin exhibition halls in high-humidity regions.

1988 ◽  
Vol 3 (5) ◽  
pp. 830-831 ◽  
Author(s):  
M. M. Garland

Changes in ac susceptibility of the high-Tc superconductor Y–Ba–Cu–O have been used to investigate the degradation of this material in the presence of high humidity. It is found that the fraction of YBa2Cu3O7 in a sample decreases exponentially with time when the sample is kept at 98% relative humidity and 20 °C. The time constant is approximately 22 days.


2021 ◽  
Vol 285 ◽  
pp. 129105
Author(s):  
Dongwon Ka ◽  
Seongon Jang ◽  
Min-Kun Kim ◽  
Hyunsook Jung ◽  
Jaeheon Lee ◽  
...  

Heritage ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 365-376 ◽  
Author(s):  
Teresa Palomar ◽  
Pedro Redol ◽  
Isabel Cruz Almeida ◽  
Eduardo Pereira da Silva ◽  
Marcia Vilarigues

This work presents the results of the exposure of soda-lime, potash-lime and mixed-alkali silicate glasses during ten and twenty months in different Portuguese monuments with historical stained-glass windows to characterize the influence of local environmental conditions. The glass samples were exposed in the Monastery of Batalha (Batalha), the Monastery of Jerónimos (Lisbon), and the Cathedral of Évora (Évora). A set of analytical techniques to assess the physicochemical effects were used, including optical microscopy and Fourier transform infrared spectroscopy. All the samples presented crystalline deposits on their surface; however, their quantity and nature depended on the atmospheric conditions during the days before the collection. Potash-lime silicate glass was the most altered glass in comparison with soda-lime and mixed-alkali silicate glasses. The samples from the Cathedral of Évora showed a high content of dust and salts on their surface but without severe chemical pathologies; however, those samples exposed in the Monastery of Jerónimos and the Monastery of Batalha presented alteration layers due to a high humidity environment.


2020 ◽  
Vol 506 ◽  
pp. 144929 ◽  
Author(s):  
Yuya Sasaki ◽  
Midori Kawamura ◽  
Takayuki Kiba ◽  
Yoshio Abe ◽  
Kyung Ho Kim ◽  
...  

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