<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gil, Luis</style></author><author><style face="normal" font="default" size="100%">Moiteiro, Cristina</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cork</style></title><secondary-title><style face="normal" font="default" size="100%">Ullmann's Encyclopedia of Industrial Chemistry</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">composition (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">insulation</style></keyword><keyword><style  face="normal" font="default" size="100%">products</style></keyword><keyword><style  face="normal" font="default" size="100%">stoppers</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2000</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2000///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1002/14356007.f07_f01</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Wiley-VCH Verlag GmbH &amp; Co. KGaA</style></publisher><isbn><style face="normal" font="default" size="100%">9783527306732</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The article contains sections titled: 1.Introduction1.1.Definition and Origin1.2.History1.3.Morphology1.3.1.Microscopic Aspects1.3.2.Macroscopic Aspects1.4.Chemical Composition1.4.1.Suberin1.4.2.Lignin1.4.3.Polysaccharides1.4.4.Waxes1.4.5.Tannins1.4.6.Other Components1.5.Physical and Mechanical Properties2.Cork Extraction3.Production of Cork Based Products3.1.Disks and Cork Stoppers3.2.Granulates and Broken3.3.Composition Cork3.3.1.Floor and Wall Coverings3.3.2.Agglomerated Disks and Cork Stoppers3.3.3.Corkrubber3.4.Insulation Corkboard3.5.Other Specific Products4.Uses4.1.Stoppers4.2.Civil Construction4.3.Industrial Applications4.4.Automotive Industry4.5.Other Specific Uses5.Quality and Standardization5.1.Standardization and Testing5.2.Quality in Cork Production6.Economic Aspects6.1.Forestall Production6.2.Personnel and Companies6.3.Consumption of Products and Markets6.4.Producers7.Environmental and Toxicological Aspects7.1.Industrial Wastes7.2.Recycling and Treatments7.3.Emissions8.Legal Aspects</style></abstract><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;periodical: Ullmann's Encyclopedia of Industrial Chemistry&lt;br/&gt;electronic-resource-num: 10.1002/14356007.f07_f01</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%">Fruekilde, P.</style></author><author><style face="normal" font="default" size="100%">Hjorth, J.</style></author><author><style face="normal" font="default" size="100%">Jensen, N. R.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Ozonolysis at vegetation surfaces:: a source of acetone, 4-oxopentanal, 6-methyl-5-hepten-2-one, and geranyl acetone in the troposphere</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Environment</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">epicuticular wax</style></keyword><keyword><style  face="normal" font="default" size="100%">heterogenous reactions</style></keyword><keyword><style  face="normal" font="default" size="100%">NO3</style></keyword><keyword><style  face="normal" font="default" size="100%">O3</style></keyword><keyword><style  face="normal" font="default" size="100%">OH</style></keyword><keyword><style  face="normal" font="default" size="100%">products</style></keyword><keyword><style  face="normal" font="default" size="100%">rate</style></keyword><keyword><style  face="normal" font="default" size="100%">sesquiterpenes</style></keyword><keyword><style  face="normal" font="default" size="100%">Squalene</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1998///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S1352231097004858</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">32</style></volume><pages><style face="normal" font="default" size="100%">1893 - 1902</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">ÐThe present study gives a possible explanation for the ubiquitous occurrence of 6-methyl-5- hepten-2-one and acetone in ambient air and reports for the Þrst time on a widespread occurrence of geranyl acetone and 4-oxopentanal. We have conducted a series of laboratory experiments in which it is demonstrated that signiÞcant amounts of geranyl acetone, 6-methyl-5-hepten-2-one (6-MHO), 4-oxopen- tanal (4-OPA), and acetone are formed by the reaction of ozone with foliage of common vegetation in the Mediterranean area (Quercus ilex'Citrus sinensis'Quercus suber'Quercus freinetto'Pinus pinea). In order to rule out biological formation, epicuticular waxes were extracted from the leaves, dispersed on glass wool and allowed to react with a ßow of artiÞcial air. SigniÞcant amounts of 6-MHO and 4-OPA were formed at ozone concentrations of 50Ð100 ppbv, but not at zero ozone. A number of terpenoids common in vegetation contain the structural element necessary for ozonolytic formation of 6-MHO. Two sesquiter- penes (nerolidol; farnesol), and a triterpene (squalene) selected as representative test compounds were demonstrated to be strong precursors for acetone, 4-OPA, and 6-MHO. Squalene was also a strong precursor for geranyl acetone. The atmospheric lifetime of geranyl acetone and 6-MHO is less than 1 h under typical conditions. For the present study, we have synthesized 4-OPA and investigated the kinetics of its gas-phase reaction with OH, NO 3 , and O 3 . A tropospheric lifetime longer than 17 h under typical conditions was calculated from the measured reaction rate constants, which explains the tropospheric occurrence of 4-OPA. It is concluded that future atmospheric chemistry investigations should included geranyl acetone, 6-MHO, and 4-OPA. In a separate experiment it was demonstrated that human skin lipid which contains squalene as a major component is a strong precursor for the four above-mentioned compounds plus nonanal and decanal. The accidental touching of material which later comes into contact with ozone can lead to strong artifact formation of these carbonyl compounds. Previously published results on these compounds must be seen in this new light</style></abstract><issue><style face="normal" font="default" size="100%">11</style></issue></record></records></xml>