Your search resulted in 289 documents. Displaying 25 entries per page.
Occurrence of synanthropic beetles (Coleoptera Ptinidae) and checkered beetles (Coleoptera Cleridae) in relation to climatic factors in historical buildings from North-Eastern Germany
2021 - IRG/WP 21-10980
Predatory checkered beetles occur in many historical buildings. Thus, it is essential to learn more about the ecology of these beetles, specifically for their further use as suitable beneficial organisms in biological control of wood-destroying insects. In this study, indoor climatic conditions were examined as a major factor influencing their occurrence and that of their prey Anobium punctatum an...
C Baar, C von Laar, M Willert, H Bombeck
A new approach to wood protection: Potential of biologically synthesised CuO and ZnO nanoparticle formulation as a wood preservative
2022 - IRG/WP 22-30758
Even though metal nanoparticles are effective in protecting wood, they are less preferred, as they are synthesised using methods which are expensive and are not environmentally friendly. Biological synthesis of nanoparticles using plants, fungi, yeast, bacteria and viruses, has been accepted as an alternative approach and is referred to as green synthesis. Utilization of biologically synthesised n...
Shiny K S, R Sundararaj, N Mamatha
Premature adhesion failure of exterior wood coatings – The influence of substrate temperature at coating application and moisture accumulation during storage
2022 - IRG/WP 22-40937
The present study aimed at extending the knowledge about premature coating failures of industrially finished wood cladding. Two potential factors were studied: the influence of substrate temperature at coating application and moisture accumulation during storage on the adhesion of waterborne coating systems. In the first experiment, 4 batches of wood specimens were submitted to 4 different tempera...
U Hundhausen
Susceptibility of selected Australian commercial timbers to West Indian drywood termite Cryptotermes brevis
2023 - IRG/WP 23-11003
West Indian drywood termite (Cryptotermes brevis) is a globally distributed timber pest and is invasive in Queensland, Australia, causing widespread damage to structures and large economic impacts in control and repair costs. Despite this, the knowledge of which specific timbers are susceptible to attack is limited and requires investigation. Two six-week feeding trials were performed, exposing se...
W Haigh, R A Hayes, B Hassan
Subterranean termite control management in urban areas in Spain. Example of management in the old town of Vigo, Spain
2023 - IRG/WP 23-11006
Termites are wood destroying insects always present in the nature with an important wood decomposition function. In Europe, they are mainly located in the Mediterranean area. In Spain, termites are an important problem in urban areas. It is estimated about 80% of old historic towns in Spain are affected by subterranean termite attacks and it is the most important damage in wood structures and wood...
D Lorenzo, A Lozano, M Touza, J Benito
Japanese traditional wooden building construction project in Bangkok - Part 2 Verification of termite control method
2023 - IRG/WP 23-11022
We have confirmed the effectiveness in Thailand of chemicals and stainless steel mesh that have been proven effective in Japan.
Stake and container tests were conducted and the following results were obtained:
1. There is no damage on specimens covered with stainless steel mesh, CuAz-treated specimens both stake test and container test.
2. Natural pyrethrin-treated specimens without stainless ...
H Ishiyama, S Murakami
Efficacy of a wide-spectrum plant bio-based anti-termite product - Laboratory trials
2023 - IRG/WP 23-11024
Compared to the number of timbers available, the list of wood species resistant to termites is rather limited and largely composed of tropical timbers. In addition, due to climate change and environmental degradation, together with global trade, a significant global expansion of termites is predicted along with the economic losses due to their activities. Therefore, there is a demand to find produ...
M-F Thévenon, F Chopinet, J Vuillemin, A Robert, S Lafay, D Messaoudi
How the biochemical activities of polyphenols may be effective for the protection of wood deterioration by termites?
2023 - IRG/WP 23-30789
In spite of the remarkable mechanical characteristics of wood for building construction and furniture industry, this material is prone to biodeterioration by xylophagous organisms. This compromises its durability and performances during storage and services, and results in considerable economical losses estimated by the billions. Protection against fungi, termites and other wood biodegrading organ...
J-P Joseleau, D Messaoudi, K Ruel
Control of Asian subterranean termites Coptotermes gestroi (Blattodae: Rhinotermitidae) by a new generation bait system with vegetal extracts-diflubenzuron mixture
2023 - IRG/WP 23-30797
The efficacy of anti-termite bait pebble dosed at 0.3% w/w of Diflubenzuron, and Chitin Synthesis Inhibitor (CSI) and 0.6% w/w of vegetal extract from Berkem Biosolutions®, was evaluated in the laboratory on the Asian subterranean termite Coptotermes gestroi (Wasmann). Four concentrations 33.3%, 50%, 50% bis and 100% as well as two neutral matrices, were used in two in-house developed test method...
F Chopinet, D Messaoudi
Potential of plant polyphenol extracts in pesticide formulations against Xylophagous insects
2023 - IRG/WP 23-30790
Termite castes (soldiers, nymphs, and reproductives) are unable to feed themselves and are fed via trophallaxis from the workers which degrade the cellulose from wood. It is of great economical importance to ascertain the efficacy of preservatives against wood decay organisms in order to extend wood products service life. Remedial chemical product applications are used primarily as wood treatments...
K Ruel, D Messaoudi, J-P Joseleau
Prevention of termite tubing on foam insulation materials
2024 - IRG/WP 24-11039
Foam insulation products have been shown to be damaged by termites who can readily tunnel within it and use it as a conduit within structures. Different types of commercially available foam insulation were tested to see if they could support termite (Coptotermes formosanus, Shiraki) tunnelling on or within them and whether they could be used as a conduit to access a wood food source placed above i...
Q Wu, J Curole, J D Lloyd
Investigating moisture dynamics and fungal decay risk: integrating X-ray CT visualization and simulation benchmarks through a Fungal Control Unit
2024 - IRG/WP 24-11045
Wood is susceptible to fungal attack and over time the structural integrity can be compromised. This risk is of course strongly related to moisture dynamics, as moisture is needed for fungal growth. While existing methodologies, such as lab and field tests, provide valuable insights into wood decay, they often fall short in replicating real-life conditions, particularly within the intricacies of t...
J Van den Bulcke, J Van Acker, M Delbeke, A Blommaert, N Van Den Bossche, M Steeman, L De Ligne
Efficacy performance of Pea Extract as bait toxicant for termite control in Reunion Island
2024 - IRG/WP 24-11050
This study was carried out to determine the toxicity of Pisum sativum L., extract (Pea Extract) for the subterranean termite, Coptotermes gestroi (Isoptera: Rhinotermitidae). Yellow field peas (Pisum sativum L.) are particularly rich in protein. A solid-liquid hydroalcoholic extraction process was employed on the dried form of pea seeds to obtain one particular peptide PA1b (Pea Albumin 1, subunit...
J Vuillemin, D Messaoudi, A Robert, P da Silva
EMC as a quality control parameter for thermally modified wood
2024 - IRG/WP 24-20720
While standards for quality performance of treated wood have been in place for many years, none have been developed for modified wood such as thermally modified wood (TMW). Only in one case has TMW been listed in 2018, by the Nordic Wood Preservation Council (NWPC).
A key component of a quality system is its control parameters, i.e. the metrics that are to be measured and controlled. Existing m...
P Klaas, J T Lauridsen