Your search resulted in 35 documents. Displaying 25 entries per page.
Visualization of gold/silver nanostars in wood by surface enhanced Raman spectroscopy
2014 - IRG/WP 14-30653
Nanotechnology is a fast growing up-to-date technology and ventures expeditiously in the wood preservative market. However, there is still a huge lack of understanding about the interaction and incorporation of nanoparticles (NSs) in wood. Surface-enhanced Raman scattering (SERS) offers unique advantages as an analytical tool with a high selectivity and sensitivity without matrix interference. Her...
C Geers, L Rodríguez-Lorenzo, M Placencia Peña, P Brodard, T Volkmer, B Rothen-Rutishauser, A Petri-Fink
Description of the damage produced by xilophagus Curculionides in Spain
1989 - IRG/WP 1408
Cossoninae are a reduced subfamily of Curculionidae. These xilophagus insects produce significant damage in Spain, mainly affecting old buildings. Their activity is a real problem for the preservation of the country's historical-artistic heritage. The three Cossoninae species most widespread in Spain are described for the first time as well as the conditions under which they develop. The ...
E L Rodríguez Trobajo
Detection of semi-quantitative and qualitative enzymatic activities of blue-stain fungi
2000 - IRG/WP 00-10347
Blue-stain, produced in forests, continues to be a problem in countries of moderate climate. In forestry, in certain geographical areas of Spain, it has been observed that anti-sapstain products have not always been efficient, as their fungicidal effectiveness varies on occasion, depending on the species of wood and microbiota that exist in the region. It is not always easy to identify the species...
M T De Troya, F Llinares, D Muñoz-Mingarro, M J Pozuelo, N Acero, C Rodríguez-Borrajo, A M Navarrete
Building With Wood an strategic action in Spain
2010 - IRG/WP 10-40530
This paper explains the objectives and results of the “Building with Wood” project, mainly at Spanish level. As far as the wood preservation field is concerned, the present abstract also informs about the main goals of the project in this matter....
M Conde García, J I Fernández-Golfín Seco, J Galván Rodríguez
Influencia de la impregnación con soluciones tánicas en la estabilidad dimensional de la madera de Pinus pinaster Ait. procedente de España
1992 - IRG/WP 92-3686
En virtud de la importancia que presenta la madera de Pinus pinaster Ait. en el sector constructivo español, se ha sometido a esta a tratamientos en autoclave con distintas soluciones tánicas naturales y artificiales a fin de estudiar su incidencia en la estabilidad dimensional frente a exposiciones exteriores. En el estudio se pone de manifiesto el efecto creado por el tratamiento protector en ...
J A Rodríguez Barreal, J Cubillo Jordan de Urries, L Garcia Esteban
Comparative study of lignocellulolytic activities of Pleurotus spp. and white rot and brown-rot fungi
1997 - IRG/WP 97-10210
In this work, the in vitro species of Pleurotus (P.eringii, P. cornucopiae and P. ostreatus), from structures of degraded wood have been studied. This degradative activity was compared to those presented by Trametes versicolor (fungus characteristic of white rot) and Gloeophyllum trabeum (fungus representative of brown rot). The activities studied were the following: cellulase, xylanase, pectinase...
D Muñoz-Mingarro, F Llinares, M T De Troya, F Rubio, M Yuste, C Rodríguez-Borrajo, J E Garcia de los Rios, F Alvarez, P Jiménez, A Rojas, A Navarrete, P Reche
Comparative study of the degradative ability of autochthonous and standardized strains of wood decay fungi
1996 - IRG/WP 96-10178
This study is intended to assess the biomass, the extracellular protein production, and the carbohydrate degradating ability of three standarized (Chaetomium globosum, Trametes versicolor and Gloeophyllum trabeum) and six autochthonous wood decay fungi strains, with unknown degradating effects. The carbohydrate sources used were those that are usually found in wood cells (glucose, galactose, manos...
F Llinares, D Muñoz-Mingarro, J E Garcia de los Rios, M T De Troya, M Yuste, F Rubio, F Alvarez, P Jiménez, C Rodríguez-Borrajo, A M Navarrete
Proposal for a simple methodology for the evaluation of the preventive effectiveness of protectors applied in superficial treatments against basidiomycetes fungi
1999 - IRG/WP 99-20167
Due to the considerable effect that the relation between the lateral surface and the volume of wood blocks has on superficial treatments, this work has attempted to determine the ideal size which allows to evaluate the effectiveness of a preservative in the shortest possible time. Three wood blocks of different dimensions were tested. In addition, as it is necessary to neutralise the effect of the...
M T De Troya, A Navarrete, F Rubio, M Yuste, C Rodríguez-Borrajo, D Muñoz-Mingarro, F Llinares
Improvement in dimensional stability against water of the main Spanish timbers impregnated with water repellent organic protectors
1988 - IRG/WP 3468
The study reported the increase of dimensional stability against water of the main Spanish timbers, both broadleaved and coniferous, after impregnation in the autoclave with organic protector, with contains 33.3% water repellent waxes and resins. The proposed Spanish standard, U.N.E. n° 56541 is used, where dimensional stability of the impregnated wood is expressed as a% of that of the non-impreg...
J A Rodríguez Barreal
An alternative method for the determination of lignocellulolytic enzymatic activities of white rot fungi
1998 - IRG/WP 98-10261
Some lignocellulolytic activities of wood decay fungi can be evaluated in an indirect way through the study of the decolorization that white rot fungi produces in culture media in the presence of dyes. In this assay, ten dyes were selected, which were added in concentrations of 0.00 1% - 0.003% (P/V) to four-day cultures of Trametes versicolor containing 1% of beech sawdust in a basal salt medium...
D Muñoz-Mingarro, F Llinares, F Rubio, M Yuste, C Rodríguez-Borrajo, J Jiménez, M T De Troya
Enzymatic study of Ceratocystis sp., blue-stain fungi on Pinus nigra
1999 - IRG/WP 99-10315
One of the main problems that the forest exploitation industry has with Pinus nigra wood is the blue-stain fungi, whose causing agent is unknown. Therefore, the objective of this work has been to study, through enzymatic tests of the isolated cultures, if these fungi infect Pinus nigra in any specific way. After the incubations, isolates of Ceratocystis were obtained. These were cultured in a sali...
M T De Troya, F Rubio, D Muñoz-Mingarro, F Llinares, C Rodríguez-Borrajo, M Yuste, M J Pozuelo, J I Fernández-Golfín
Evaluation of the permeability of fast grown wood species
1995 - IRG/WP 95-40042
The low natural durability of certain species of wood, implies the need for applying a protecting treatment to increase its life in service. Because of this, a knowledge of the permeability properties of the wood is desired. In this work, a simple and reliable method to evaluate the wood permeability is presented. For that, we have been used fast grown species, with low natural durability, Poplar ...
M T De Troya, A M Navarrete, E Sanchez, J E Garcia de los Rios, E L Rodríguez Trobajo
Influence of the nature of the substrate and the method of inoculation on the degradative activity of soft rot fungi
1998 - IRG/WP 98-20133
The European Standard (ENV-807) determines the threshold of effectiveness of wood preservatives against the action of soft rot Ascomycetes fungi. Its application in the treatment of wood used in the hazard class 4 does not always offer repeatable results, which could be expected in an experimental norm. For this reason, in this paper, we have evaluated the diverse variables that might influence t...
M T De Troya, A M Navarrete, F Rubio, J Jiménez, D Muñoz-Mingarro, C Rodríguez-Borrajo, F Llinares, M Yuste
Study of new wood preservatives from biological origin and low toxicity against wood decay organisms (fungi and termites)
2006 - IRG/WP 06-10600
Wood as an organic material is likely to be attacked by living organisms if no protecting treatment is applied to improve its durability. The biological agents, which in Spain, due to its specific climatologic, cause major damage to wood, are the stain fungi, the rot fungi and the subterranean termites. The commercialisation of the products actually used to treat wood against fungi and to treat t...
M T Troya, M J Prieto, F Rubio, D Lorenzo, J J Teixidó
Accelerated assessment tests of new termiticides
2007 - IRG/WP 07-20353
One of the biological agents, which cause major damage to wood in Spain, is the subterranean termites. The systems used for controlling termites don’t eradicate them, and the products presently used to treat wood against them, due to their toxicity and their persistence in the environment, could be prohibited in the near future in Europe as consequence of the 98/8/EC Directive (usually called t...
M T Troya, M J Prieto, D Lorenzo, F Rubio
Study of natural durability of Spanish Eucalyptus globulus wood
2007 - IRG/WP 07-10617
In some countries such as Australia, the wood of Eucalyptus globulus is recommended, due to its high durability, in risk situations where attack by organisms is likely to occur. In Galicia this species has been used for many decades for timber structures, which are still used. However, European Standard EN-350-2 places Eucalyptus globulus in the worst category of natural durability, a situation th...
D Lorenzo, M T Troya, M J Prieto, C Baso, M Touza
Evaluation of the natural durability of reed (Phragmites australis) originating in the Fertö region (Hungary) against wood decay organisms as material for use in a sustainable motorway noise barrier
2009 - IRG/WP 09-10685
This work presents the research carried out to determine the natural durability of reed from the Fertö region of Hungary against wood decay organisms. The final objective of this study is to obtain sufficient relevant data in order that the reed may be used as a constituent element in a viable and sustainable motorway noise barrier, which has been developed within the European research project, k...
M T Troya, F Rubio, M J Prieto, D Lorenzo, J L Fernández-Cabo, R Schöftner
Study on the natural durability of Eucalyptus grandis wood from Argentina
2009 - IRG/WP 09-10689
In Argentina eucalypts are in second place of importance in planted area, after pines. Due to its high growth rates (from 35 to 55 m3/ha/yr), Eucalyptus grandis is the most important among the eucalypts planted in Argentina. Moreover, E. grandis is one of the species with the greatest potential in the country, because of its diversity of uses for high end and added value solid products. Due to the...
D Lorenzo, M T Troya, J C Piter, M Sánchez, C Baso
Study on the natural durability of Eucalyptus globulus wood from Spain
2009 - IRG/WP 09-10690
The wood of Eucalyptus globulus is recommended in some countries, such as Australia, due to its high durability, in risk situations where attack by organisms is likely to occur. In Galicia this species has been used for many decades for timber structures and other uses, which are still used. However, European Standard EN 350-2 places Eucalyptus globulus in the worst category of natural durability,...
D Lorenzo, M T Troya, M Touza, C Baso
Succession after Fire of Fungal Fruiting Bodies in Mediterranean Pinus pinaster Stands in Spain
2012 - IRG/WP 12-10789
In this study we present the results of a 4-year survey aimed at describing the succession of fungal communities following fire in a Mediterranean ecosystem in Northwest Spain, dominated by Pinus pinaster Ait. After a large wildfire in 2002, six 2 x 50 m study plots were established in burned and unburned areas corresponding to early and late succession stages. During the autumn seasons from 2003 ...
P Vásquez Gassibe, M Hernández-Rodriguez, R Fraile Fabero, J A Oria-De-Rueda, P Martín-Pinto
Performance standards for wood in construction – delivering customer service life requirements
2013 - IRG/WP 13-20537
There is increasing need for consideration of performance classification for wood products in construction, as evidenced by the CPR, warranty providers and end user demands for information. This means we need to radically consider how the tests we conduct on wood for durability (especially biological durability) can inform on service life and how they might if possible be translated into a perform...
E Suttie, C Brischke, F Englund, E Heisel, J Jermer, D Lorenzo, M Polášek, S Thelandersson, J Van Acker
Performance classification of wood in construction – drafting a user friendly European standard
2014 - IRG/WP 14-20545
The performance classification for wood products in construction is an extremely important topic in Europe and beyond – warranty providers and end users demand service life and performance information in the face of competition with other materials. The European project PerformWOOD has formalised and drawn together the on-going research to focus on generation of a material resistance factor for ...
E Suttie, C Brischke, L Meyer, J Van Acker, M Kutnik, E Heisel, F Englund, J Jermer, S Thelandersson, M Polášek, D Lorenzo
Application of nanoparticles of silver and nanoparticles of titanium dioxide in reinforcement of wood and coating for wood in Costa Rica
2015 - IRG/WP 15-40698
Wood is one of the most widely used materials in last 20 years by society in many applications, with a considerable proportion of this material coming from forest plantations. Plantations usually produce timber with reduced strength properties and low natural durability. On the other hand, nanotechnology applications have the potential to increase wood properties. Likewise, nanotechnology cannot o...
A Berrocal Jiménez, R Moya Roque, A Lucrecia Rodríguez, J R Vega Baudrit
Engineering for Rural and Civil Development. Uni Performance of wood exterior structures above ground contact in Spain built with softwood species. The situation of cases in northern Spain
2016 - IRG/WP 16-20597
Across Europe is very common to find exterior structures build in sawn and glue-laminated wood. Most of these exterior structures used softwood wood species such as fir, spruce, larch and pine. In Spain wood exterior structures, as for example bridges, became more and more popular since eighties, when sawn and glue-laminated wood were utilized for building exterior wooden structures in overall Spa...
D Lorenzo, J Fernández-Golfín, M Touza
Laboratory and Field evaluation on Resistance of Thiacloprid-treated Pine Species to Termites in Mexico
2016 - IRG/WP 16-30687
The usage of Neonicotinoids for wood preservatives is common practice in several countries. Especially the active ingredient Imidacloprid is well established for this application due to its high efficacy against termites. (2Z)-3-(6-chloro-3-pyridylmethyl)-1,3-thiazolidin-2-ylidene-cyanamide, also known as Thiacloprid showed a good efficacy against Reticulitermes santonensis De Feytaud in efficacy ...
P Meckler, T Jaetsch, I Rodriguez