<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Alaejos, Joaquín</style></author><author><style face="normal" font="default" size="100%">López, Francisco</style></author><author><style face="normal" font="default" size="100%">Pérez, Antonio</style></author><author><style face="normal" font="default" size="100%">Rodríguez, Alejandro</style></author><author><style face="normal" font="default" size="100%">Jiménez, Luis</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of the holm oak soda pulping conditions on the properties of the resulting paper sheets.</style></title><secondary-title><style face="normal" font="default" size="100%">Bioresource technology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Paper</style></keyword><keyword><style  face="normal" font="default" size="100%">Textile Industry</style></keyword><keyword><style  face="normal" font="default" size="100%">Wood</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year></dates><volume><style face="normal" font="default" size="100%">99</style></volume><pages><style face="normal" font="default" size="100%">6320-4</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This paper reports on the influence of independent variables in the pulping of holm oak wood [viz. temperature (135-195 degrees C), cooking time (30-90 min) and soda concentration (10-20%)] on the properties of the resulting paper sheets. By using a central composite factorial design and a fuzzy neural model, equations relating each dependent variable to the different independent variables were derived that reproduced the experimental results for the dependent variables with errors less than 14%. Using a soda concentration of 17.5% at 195 degrees C for 30 min, it is possible to reduce the working capital (cost of chemical) and the capital investment, because it is operated with smaller values of the soda concentration and cooking time that maximum considered (20% of soda concentration and 90 min). The pulp yield thus obtained differed by less than 31.3% from the highest possible value; also, the resulting pulp and paper sheets had acceptable properties that differed by less than 21.10% from their optimum values.</style></abstract><accession-num><style face="normal" font="default" size="100%">18226524</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Alaejos, Joaquín</style></author><author><style face="normal" font="default" size="100%">López, Francisco</style></author><author><style face="normal" font="default" size="100%">Pérez, Antonio</style></author><author><style face="normal" font="default" size="100%">Rodríguez, Alejandro</style></author><author><style face="normal" font="default" size="100%">Jiménez, Luis</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of the holm oak soda pulping conditions on the properties of the resulting paper sheets.</style></title><secondary-title><style face="normal" font="default" size="100%">Bioresource technology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Paper</style></keyword><keyword><style  face="normal" font="default" size="100%">Textile Industry</style></keyword><keyword><style  face="normal" font="default" size="100%">Wood</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2008///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/18226524</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">99</style></volume><pages><style face="normal" font="default" size="100%">6320 - 4</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This paper reports on the influence of independent variables in the pulping of holm oak wood [viz. temperature (135-195 degrees C), cooking time (30-90 min) and soda concentration (10-20%)] on the properties of the resulting paper sheets. By using a central composite factorial design and a fuzzy neural model, equations relating each dependent variable to the different independent variables were derived that reproduced the experimental results for the dependent variables with errors less than 14%. Using a soda concentration of 17.5% at 195 degrees C for 30 min, it is possible to reduce the working capital (cost of chemical) and the capital investment, because it is operated with smaller values of the soda concentration and cooking time that maximum considered (20% of soda concentration and 90 min). The pulp yield thus obtained differed by less than 31.3% from the highest possible value; also, the resulting pulp and paper sheets had acceptable properties that differed by less than 21.10% from their optimum values.</style></abstract><issue><style face="normal" font="default" size="100%">14</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;accession-num: 18226524</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Alaejos, J</style></author><author><style face="normal" font="default" size="100%">Lopez, F</style></author><author><style face="normal" font="default" size="100%">Eugenio, M E</style></author><author><style face="normal" font="default" size="100%">TAPIAS, R</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Soda-anthraquinone, kraft and organosolv pulping of holm oak trimmings.</style></title><secondary-title><style face="normal" font="default" size="100%">Bioresource technology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Ethyleneglycol</style></keyword><keyword><style  face="normal" font="default" size="100%">Forestry residues</style></keyword><keyword><style  face="normal" font="default" size="100%">Holm oak trimmings</style></keyword><keyword><style  face="normal" font="default" size="100%">Paper</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><volume><style face="normal" font="default" size="100%">97</style></volume><pages><style face="normal" font="default" size="100%">2110-2116</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The operating conditions for an organosolv (ethyleneglycol) and two alkaline (soda-anthraquinone and kraft) processes for obtaining cellulose pulp and paper from holm oak (Quercus ilex) wood trimmings were optimized. A range of variation for each process variable (viz. temperature, cooking time and soda or ethyleneglycol concentration) was established and a central composite experimental design involving three independent variables at three different variation levels was applied. The results obtained with the three cooking processes used were compared and those provided by the kraft process were found to be the best. Thus, the tensile index values it provided (5.9-16.3 N m/g) were 23.7% and 41.5% better than those obtained with the soda-AQ and ethyleneglycol processes, respectively. Also, the kraft process provided the best burst index, brightness and kappa number values. Based on the optimum working ranges, the temperature and cooking time were the variables resulting in the most and least marked changes, respectively, in pulp properties.</style></abstract><accession-num><style face="normal" font="default" size="100%">16269242</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Alaejos, J.</style></author><author><style face="normal" font="default" size="100%">López, F.</style></author><author><style face="normal" font="default" size="100%">Eugenio, M. E.</style></author><author><style face="normal" font="default" size="100%">Tapias, R.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Soda-anthraquinone, kraft and organosolv pulping of holm oak trimmings.</style></title><secondary-title><style face="normal" font="default" size="100%">Bioresource technology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Ethyleneglycol</style></keyword><keyword><style  face="normal" font="default" size="100%">Forestry residues</style></keyword><keyword><style  face="normal" font="default" size="100%">Holm oak trimmings</style></keyword><keyword><style  face="normal" font="default" size="100%">Paper</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2006///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/16269242</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">97</style></volume><pages><style face="normal" font="default" size="100%">2110 - 2116</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The operating conditions for an organosolv (ethyleneglycol) and two alkaline (soda-anthraquinone and kraft) processes for obtaining cellulose pulp and paper from holm oak (Quercus ilex) wood trimmings were optimized. A range of variation for each process variable (viz. temperature, cooking time and soda or ethyleneglycol concentration) was established and a central composite experimental design involving three independent variables at three different variation levels was applied. The results obtained with the three cooking processes used were compared and those provided by the kraft process were found to be the best. Thus, the tensile index values it provided (5.9-16.3 N m/g) were 23.7% and 41.5% better than those obtained with the soda-AQ and ethyleneglycol processes, respectively. Also, the kraft process provided the best burst index, brightness and kappa number values. Based on the optimum working ranges, the temperature and cooking time were the variables resulting in the most and least marked changes, respectively, in pulp properties.</style></abstract><issue><style face="normal" font="default" size="100%">16</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;accession-num: 16269242</style></notes></record></records></xml>