34 – de Palacios, P., García Esteban, L., García Fernández, F., García-Iruela, A., González-Adrados, J.R., Conde, M. Comparative study of the 35ºC sorption isotherms of cork stripped from the tree in 1968 and 2006. Bioresources. 6(2): 2135-2144.
: A study was made of the hygroscopicity of two samples of cork with the same characteristics, taken from trees of the same age but with a 38- year gap between debarking. This was achieved by plotting the 35oC sorption-desorption isotherms and fitting them using the GAB model. Infrared spectra were used to determine any chemical changes in the cell wall. Extended exposure to controlled […]
33 – García Esteban, L., García Fernández, F., de Palacios, P. Prediction of plywood bonding quality using an artificial neural network. Holzforschung. 65(2): 209-214.
The bonding quality test is the most important of all the tests performed on plywood, as it determines the suitability of boards for use in the type of exposure they are intended for. Because this test involves aging pretreatment, results are not available in less than 24-97 h after manufacture, depending on the type of board, and therefore any error in the manufacturing process is not detected until 1-4 days later […]
32 – Martín, J.A., García Esteban, L., de Palacios, P., García Fernández, F. Variation in wood anatomical traits of Pinus sylvestris L. between Spanish regions of provenance. Trees. Structure and function. 24(6): 1017-1028.
The Spanish populations of Pinus sylvestris L. occupy differentiated sites and must therefore include structural variations to cope with varied climate conditions. This study compares wood anatomical traits of P. sylvestris from ten Spanish regions of provenance with contrasting climates, taking into account the effects of region of provenance and tree nested within provenance […]
31 – García Esteban, L., de Palacios, P., García Fernández, F. Use of artificial neural networks as a predictive method to determine moisture resistance of particle and fiber boards under cyclic testing conditions (UNE-EN 321). Wood and Fiber Science. 42(3): 335-345.
Determining internal bond strength and thickness swelling after cyclic aging tests in humid conditions is essential in assessing the moisture resistance of particle and fiber boards. However, as operating procedures for these types of tests take at least three weeks, their use in daily finished product control is impracticable. To solve this problem an artificial neural network was used […]
30 – Fernández-Golfín, J.I., Conde García M., González Hernández, F., Conde García, M., Fernández-Golfín, J.J., Baonza Merino, M.V., García Esteban, L., González Adrados, J.R. The influence of the moisture content on the electrical resistance of two types of cork stoppers. Forest Systems. 19(2): 184-188.
Using linear regression techniques, different regression models of the type Log10(Log10(R)+1)=a.h+b were derived to describe the relationship between the log of the electrical resistance (measured using pin electrodes) and the moisture content of two types of cork stoppers (natural [N] and agglomerate [AG]). The results obtained show that, using the models proposed […]
29 – García Esteban, L., de Palacios, P., García Fernández, F., García-Amorena, I. Effects of burial of Quercus spp. wood aged 5910±250 BP on sorption and thermodynamic properties. International Biodeterioration & Biodegradation. 64: 371-377.
The hygroscopicity and thermodynamic properties of buried Quercus spp. wood aged 5910±250 BP were studied and compared with wood of the same genus from recently cut trees. This was done by calculating the 35ºC and 50ºC sorption isotherms and fitting them in accordance with the GAB model. The thermodynamic parameters were obtained from the isotherms using the integration method […]
28 – García Esteban, L., de Palacios, P., Rodríguez-Losada, L. Abies pinsapo forests in Spain and Morocco: threats and conservation. Oryx-The International Journal of Conservation. 44(2): 276-284.
The conifer forests in the Mediterranean Arc have been subjected to overuse by humans since ancient times. Some species which took refuge in almost inaccessible places have managed to survive, but the area of other species has been greatly reduced as a result of agriculture, livestock raising, illegal felling and, in some cases, fire […]
27 – García Esteban, L., Martín, J.A., de Palacios, P., García Fernández, F., López R.. Adaptive anatomy of Pinus halepensis trees from different Mediterranean environments in Spain. Trees. Structure and function. 24: 19-30.
A study was conducted on the variation in growth, biomass, juvenile wood anatomy and needle morphology of Pinus halepensis Mill. from three Spanish regions of provenance characterized by environmental differences, without the influence of the site factor. Seeds collected from two progenies in each region were planted in a single plot and the trees were felled […]
26 – García Esteban, L., García Fernández, F., de Palacios, P. MOE prediction in Abies pinsapo Boiss. timber: application of an artificial neural network using non-destructive testing. Computer and structures. 87: 1360-1365.
Determining the modulus of elasticity of wood by applying an artificial neural network using the physical properties and non-destructive testing can be a useful method in assessments of the timber structure in old constructions. The modulus of elasticity of Abies pinsapo Boiss. timber was predicted in this study through the parameters of density, width, thickness, moisture content, ultrasonic wave propagation […]
25 – García Esteban, L., de Palacios, P., García Fernández, F., Martín, J.A., Génova, M., Fernández-Golfín, J.I. Sorption and thermodynamic properties of buried juvenile Pinus sylvestris L. wood aged 1170±40 BP. Wood Science and Technology. 43(7-8):679-690.
The hygroscopicity and thermodynamic properties of buried juvenile Pinus sylvestris L. wood with an age of 1170±40 BP were compared with the corresponding values of juvenile wood of the same species from recently cut trees. The 35ºC and 50ºC isotherms were plotted following the saturated salts method and subsequently fitted in accordance with the GAB model. The isotherms were […]
