<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2215-2504</journal-id>
<journal-title><![CDATA[Revista Forestal Mesoamericana Kurú]]></journal-title>
<abbrev-journal-title><![CDATA[Kurú]]></abbrev-journal-title>
<issn>2215-2504</issn>
<publisher>
<publisher-name><![CDATA[Instituto Tecnológico de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2215-25042018000300016</article-id>
<article-id pub-id-type="doi">10.18845/rfmk.v15i1.3774</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización física y química del carbón de tres segmentos de fuste y ramas de Eucalyptus camaldulensis Dehnh. proveniente de plantaciones dendroenergéticas]]></article-title>
<article-title xml:lang="en"><![CDATA[Physical and chemical characterization of the carbon of three segments of stem and branches of Eucalyptus camaldulensis Dehnh. from dendroenergetic plantations]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valverde]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arias]]></surname>
<given-names><![CDATA[Dagoberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos]]></surname>
<given-names><![CDATA[Rooel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guevara]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Tecnológico de Costa Rica Escuela de Ingeniería Forestal ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Tecnológico de Costa Rica Escuela de Ingeniería en Agronegocios ]]></institution>
<addr-line><![CDATA[cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<volume>15</volume>
<fpage>16</fpage>
<lpage>24</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S2215-25042018000300016&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S2215-25042018000300016&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S2215-25042018000300016&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El carbón vegetal es producto de la descomposición de la lignina, celulosa, hemicelulosa y de la pérdida de extraíbles producto de la exposición de la madera a altas temperaturas y baja concentración de oxígeno, generando combustión completa. Este proceso puede variar según la especie, sección del árbol e inclusive de la técnica de carbonización empleada. Por lo que en este trabajo se valoró el carbón obtenido de tres secciones de fuste (FB, FM y FS), además de las ramas (RA) de árboles juveniles de Eucalyptus camaldulensis Dehnh.; el estudio valoró propiedades físicas (pérdida de peso, contracción radial y tangencial) y propiedades químicas (cenizas, volátiles, contenido de humedad y carbón físico) bajo un proceso de carbonización que duró 6 horas y con una temperatura máxima de 600 °C. Los resultados mostraron pérdidas del peso del 59 al 65 % a 600 °C, con contracciones radiales de 22 a 28 % y tangenciales de 5,6 a 7,6 %, siendo FB las que mostraron los mayores valores de contracción y pérdida y RA las menores. Con las propiedades químicas, el carbon presentó contenidos de cenizas del (4,4 a 7,5) %, volátiles de (20,9 a 32,1) %, carbón fíjo de (54,6 a 63,5) % y contenido de humedad de (5,0 a 6,1) % a una densidad de 0,20 a 0,26 g/cm3. Estas variaciones incidieron que los análisis de agrupación generaran que FS y RA mostraran una cercanía elevada, seguida a MB y FB que mostraron la mayor diferenciación debido al grado de desarrollo y estructuración que presentó el árbol en la sección inferior con respecto a las secciones superiores.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Charcoal is the product of lignin, cellulose, and hemicellulose decomposition and loss of extractables due to the exposure of wood at high temperatures and low oxygen concentration, generating complete combustion. This process can vary according to the species, tree section and even the carbonization technique used. Therefore, this work evaluated the charcoal obtained from three sections of stem (FB, FM and FS) in addition to the branches (RA) of juvenile trees of Eucalyptus camaldulensis Dehnh.; the study assessed physical properties (weight loss, radial and tangential contraction) and chemical properties (ash, volatile, moisture content and physical carbon) under a process of carbonization that lasted 6 hours and with a maximum temperature of 600 °C. The results showed weight losses of 59 to 65% at 600 °C, with radial contractions of 22 to 28 % and tangential contractions of 5.6 to 7.6 %, with FB showing the highest values of contraction and loss and RA the minors. With the chemical properties, coal presented ash contents of (4.4 to 7.5) %, volatile (20.9 to 32.1) %, fixed coal of (54.6 to 63.5) % and moisture content of (5.0 to 6.1) % at a density of 0.20 to 0.26 g/cm3. These variations implied that cluster analysis provoke FS and RA to show a high closeness, followed by MB and FB which showed the greatest differentiation due to the development degree and structuring presented by the tree in the lower section regarding upper sections.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Carbón vegetal]]></kwd>
<kwd lng="es"><![CDATA[carbonización]]></kwd>
<kwd lng="es"><![CDATA[propiedades químicas]]></kwd>
<kwd lng="es"><![CDATA[propiedades físicas]]></kwd>
<kwd lng="es"><![CDATA[plantaciones dendroenergéticas.]]></kwd>
<kwd lng="en"><![CDATA[Charcoal]]></kwd>
<kwd lng="en"><![CDATA[carbonization]]></kwd>
<kwd lng="en"><![CDATA[chemical properties]]></kwd>
<kwd lng="en"><![CDATA[physical properties]]></kwd>
<kwd lng="en"><![CDATA[dendroenergetic plantation]]></kwd>
</kwd-group>
</article-meta>
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