Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 22 for “"wood decay"”.
-
Biological control of wood decay in ground contact timbers
Wood placed in ground contact situations is susceptible to attack by a wide range of soil micro-organisms which degrade the wood structure, causing significant deterioration of the mechanical properties of the timber such as strength and elasticity.Chemical preservatives such as CCA …
-
Detection and assessment of wood decay – glulam beams and wooden utility poles
… of acoustic and ultrasonic inspection methods on wooden glulam beams and utility poles. All beams and poles examined where composed of Douglas-fir. The report begins with a description of the structure of trees, the mechanical behavior of wood subjected to rot, and current utility pole inspection …
-
A Fungal secretome tailored to enable a radical (oxidative) wood decay mechanism in brown rot fungi
Wood is one of the most important carbon sinks on earth, and it is composed mainly of cellulose, hemicellulose, and lignin, which together form what is known as the lignocellulosic complex. The lignin component in wood is highly recalcitrant and prevents wood from being degraded by most organisms. …
-
Detection and analysis of the wood decay fungus <i>Lentinus Lepideus </i>Fr. using immunological probes
… raised in New Zealand White rabbits against the wood decay fungus <i>Lentinus lepideus</i> Fr. and thereafter employed in a variety of immunological techniques to (i) develop an immunodetection system for the fungus and (ii) to analyse L. lepideus antigens. Preliminary experiments indicated that …
-
The impact of nutrient availability, substrate characteristics, and environmental conditions on wood decay and microbial decomposer communities
Wood is an important store of carbon and nutrients globally, and understanding the decay of that wood is critical for estimating rates of global nutrient and carbon cycling. Nutrient availability is important for driving decay rates as decomposers need nutrients to produce wood decay enzymes. My …
-
A study of the mechanisms of antagonism by the biocontrol fungi <i>Trichoderma </i>against wood decay basidiomycetes
… concern regarding the use of hazardous wood preservatives is of increasing concern, and biological control may provide an attractive alternative to the use of toxic chemicals for wood protection. <i>Trichoderma </i>isolates are among the most widely researched biological control agents …
-
Effects of environmental factors on wood decay micromorphology of Pinus radiata and Fagus sylvatica, and its significance for in-ground wood preservative performance
Wood preservatives are essential to the continued use of wood in situations where fungal decay and damage from wood boring insects such as termites, would otherwise occur. Significant risks to health and the environment arising from their correct use are unproven but new legislation and consumer …
-
“Mycoremediation” of PFAS: application of wood decay fungi and natural wood substrates to investigate the tolerance, degradation, and sequestration capacity of fungi for perfluorocarboxylic acids:
… and investigation of PFAS sequestration by wood-based sorbents. This work contributes to the field of PFAS bioremediation, highlighting the importance of defluorination for the treatment of these compounds, and it draws attention to the role understudied fungi play in determining the …
-
The Effects of Nigerian Fungi on Nigerian Wood
The effects of Nigerian fungi on Nigerian wood are studied. The fungal flora of Nigerian soil samples, wood veneers, and the aerial environment where the soil samples were collected was investigated. The isolates included many fungal biodeteriogens. There was a close relationship between the fungal …
-
Studies on soluble nutrient components in wood and their influence on decay susceptibility and preservative efficacy
… and accumulate at evaporative surfaces of dried wood and the influence these nutrients have on wood decay and preservative performance. <br/><br/>Specific soluble carbohydrates and amino acids were shown to redistribute and accumulate at surface regions of wood during drying. Analysis of dried …
-
Biological control of the dry rot fungus <i>Serpula lacrymans</i>
<i>Serpula lacrymans</i> causes wood decay, which is of major economic importance in many areas of the world and in the U.K. alone £400 million pounds worth of damage is caused on an annual basis. Conventional treatment regimes for wood decay caused by the wood decay basidiomycete <i>Serpula …
-
Seasonal, biogeochemical, and microbial response of soils to simultaneous warming and nitrogen additions
… community structure were quantified. Finally, a wood decomposition study was conducted at the field site to examine changes in both wood decay and the fungi performing the decay. Results indicated season-specific responses of soil respiration, nitrogen mineralization, and microbial biomass to the …
-
Killer yeasts as antifungal biocontrol agents
… to inhibit the growth of fungi, specifically wood decay fungi, has been investigated. An initial broad screen of 17 yeast versus 17 fungi demonstrated that killer yeast can and do exhibit antagonistic as well as growth stimulatory affects on fungi. Yeast from the <i>Saccharomyces</i> and …
-
A study of basidiomycetes isolated from coarse woody debris and contiguous soil horizons in a mixed deciduous-conifer forest in New Hampshire, United States of America
<p>The wood decay fungus Hypholoma sublateritium (Fr.) Quel., links the mineral (BC & E) and organic (Oe) soil layers to decomposing coarse woody debris (CWD) in a northern hardwood forest. This link supports the possibility that energy stored in woody debris can facilitate the vertical transfer of …
-
The role of actinomycetes in the biodeterioration of wood
… role of actinomycetes in the biodeterioration of wood was reviewed and found to be unclear. Twenty Streptomyces isolates previously isolated from decayed wood were characterised according to the criteria of the International Streptomyces Project. Discrepancies between keys developed for …
-
The fungal communities associated with Red-cockaded Woodpeckers and their excavations: descriptive and experimental evidence of symbiosis
Cavity-excavating birds, such as woodpeckers, are ecosystem engineers and are often assumed to rely upon wood decay fungi to assist in softening the wood of potential excavation sites. Endangered red-cockaded woodpeckers (Picoides borealis; RCWs) are the only birds known to solely excavate through …
-
Studies of the interactions of CCA and ACA preservative treated wood with soil
… changes at the interface between soil, and wood treated with CCA or ACA wood preservatives were investigated using a series of leaching and soil burial studies. The softwoods Scots pine (<i>Pinus sylvestris</i>, L.), Sitka spruce (<i>Picea sitchensis</i>, Carr) and the hardwood lime …
-
Use of biological agents to enhance the preservative treatment of electrical distribution poles
… penetration has been associated with wood decay and shortened service life of treated timbers. The preservation of Sitka spruce and Scots pine heartwood by conventional methods is poor with the depth of preservative penetration being only a few millimetres.<br/><br/>The use of …
-
Assessment of brown-rot decay using X-ray computer tomography and ultrasonic measurements
Loblolly pine (Pinus taeda) wood cube specimens were exposed to Gloeophyllum fungus (Gloeophyllum trabeum) for increasing periods of time ranging from one week to twelve weeks. The corresponding mass of each of these specimens was recorded before and after they were subjected to the controlled …
Page 1 of 2