نتایج جستجو برای: biodeterioration

تعداد نتایج: 318  

Journal: :Canadian journal of microbiology 2013
V M Siqueira H M B Oliveira C Santos R R M Paterson N B Gusmão N Lima

Filamentous fungi in drinking water can block water pipes, can cause organoleptic biodeterioration, and are a source of pathogens. There are increasing reports of the involvement of the organisms in biofilms. This present study describes a sampling device that can be inserted directly into pipes within water distribution systems, allowing biofilm formation in situ. Calcofluor White M2R staining...

2013
Marta Diaz-Herraiz Valme Jurado Soledad Cuezva Leonila Laiz Pasquino Pallecchi Piero Tiano Sergio Sanchez-Moral Cesareo Saiz-Jimenez

The paintings from Tomba della Scimmia, in Tuscany, are representative of the heavy bacterial colonization experienced in most Etruscan necropolises. The tomb remained open until the late 70's when it was closed because of severe deterioration of the walls, ceiling and paintings after decades of visits. The deterioration is the result of environmental changes and impacts suffered since its disc...

2004
C. A. Clausen

Early detection of wood decay can prolong the service life of wood. Antibodies are the ideal probe for detecting fungi that cause biodeterioration because they are highly specific and can quantitatively determine the fungal antigen concentration from highly complex structures, such as wood. Polyclonal antibodies recognize multiple chemical sites of the targeted molecule, in our case, a fungal g...

2015
Yantian Ma He Zhang Ye Du Tian Tian Ting Xiang Xiande Liu Fasi Wu Lizhe An Wanfu Wang Ji-Dong Gu Huyuan Feng

In this study, we compared the microbial communities colonising ancient cave wall paintings of the Mogao Grottoes exhibiting signs of biodeterioration. Ten samples were collected from five different caves built during different time periods and analysed using culture-independent and culture-dependent methods. The clone library results revealed high microbial diversity, including the bacterial g...

Journal: :Journal of photochemistry and photobiology. B, Biology 2006
Cathy McCullagh Peter K J Robertson

Biofilm growth on stone surfaces is a significant contributing factor to stone biodeterioration. Current market based biocides are hazardous to the environment and to public health. We have investigated the photo-dynamic effect of methylene blue (MB) in the presence of hydrogen peroxide (H2O2) on the destruction of the cyanobacterium Synechococcus leopoliensis (S. leopoliensis) under irradiatio...

2012
Sofía Borrego Paola Lavin Ivette Perdomo Sandra Gómez de Saravia Patricia Guiamet

Documentary heritage is permanently subject to suffering from physical, chemical, and/or biological alterations. Biological deterioration by microorganisms (bacteria and fungi) causes undesirable changes on material properties. Microorganisms affect different organic, natural or synthetic substrates (cellulose, polycarbonates), metals, and compounds of optical and magnetic devices (CD, VHS). Pa...

2016
Helena M.B. Oliveira Cledir Santos R. Russell M. Paterson Norma B. Gusmão Nelson Lima

Filamentous fungi in drinking water distribution systems are known to (a) block water pipes; (b) cause organoleptic biodeterioration; (c) act as pathogens or allergens and (d) cause mycotoxin contamination. Yeasts might also cause problems. This study describes the occurrence of several fungal species in a water distribution system supplied by groundwater in Recife-Pernambuco, Brazil. Water sam...

2014
NEERAJ SRIVASTAVA

The fungitoxic properties of vapours of essential oil extracted from Cinnamon (Cinnamomum zeylanicum Breyn) bark have been investigated against five species of Aspergillus viz. A. flavus Link, A. fumigatus Fresenius, A. nidulans (Eidam) Wingate, A. niger van Tiegham and A. terreus Thom, causing biodeterioration of paper manuscripts in Gorakhpur. The fungitoxicity was determined in vitro as mini...

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