<?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>0258-5936</journal-id>
<journal-title><![CDATA[Cultivos Tropicales]]></journal-title>
<abbrev-journal-title><![CDATA[cultrop]]></abbrev-journal-title>
<issn>0258-5936</issn>
<publisher>
<publisher-name><![CDATA[Ediciones INCA]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0258-59362019000200010</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Emergía: generalidades, apuntes, y ejemplos de utilidad, como herramienta para evaluar la sostenibilidad]]></article-title>
<article-title xml:lang="en"><![CDATA[Emergia: generalities, notes, and examples of utility, as a tool to evaluate sustainability]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-Verzagas]]></surname>
<given-names><![CDATA[Bruna Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leyva-Galán]]></surname>
<given-names><![CDATA[Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pozo-Rodríguez]]></surname>
<given-names><![CDATA[Pedro Pablo Del]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Dirección de Protección Fitosanitaria de Matanzas  ]]></institution>
<addr-line><![CDATA[ Matanzas]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Ciencias Agrícolas (INCA)  ]]></institution>
<addr-line><![CDATA[San José de las Lajas Mayabeque]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Agraria de La Habana &#8220;Fructuoso Rodríguez&#8221;  ]]></institution>
<addr-line><![CDATA[San José de las Lajas Mayabeque]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>40</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0258-59362019000200010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0258-59362019000200010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0258-59362019000200010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El hombre, a través de su historia, ha utilizado la emergía como una herramienta útil, para evaluar la eficiencia de los sistemas productivos, aunque por mucho tiempo y por el desconocimiento de las ventajas que proporciona el empleo del análisis emergético, no se le haya dado una mayor utilización. Los avances de la ciencia, han permitido profundizar en los estudios acerca de la implementación de la metodología síntesis emergética. Anualmente se consume y se genera, una considerable cantidad de diferentes tipos de energía en los disimiles procesos productivos, pero solo una cierta parte, se reconoce y contabiliza, ya que la mayoría se pierde por la ignorancia del beneficio que representa el poder utilizarla, o ponerla al servicio del ecosistema. Ante esta problemática, se intenta demostrar la importancia que reviste el estudio y la implementación de metodologías que conduzcan a un acercamiento a la sostenibilidad. En la presente revisión bibliográfica, se hace un abordaje sobre el tema de la emergía. Además, se resumen aspectos relacionados con la nomenclatura a utilizar, así como indicadores e índices más comunes a evaluar. Finalmente, se exponen algunos ejemplos, en los que el empleo de dicha metodología ha sido exitoso, a la vez que se reflexiona sobre la importancia del tema, para futuras investigaciones.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Throughout its history man has used emergia as a useful tool to evaluate the efficiency of productive systems even for a long time, and because of the lack of knowledge of the advantages of using the emergia analysis, he has not been given, greater utilization. The advances of science, have allowed deepening in the studies on the implementation of Methodology Emergent Synthesis. Every year a considerable number of different types of energy are in different production processes generated, but only a certain part is recognized and accounted, since most are lost because of the ignorance of the benefit it represents, the power to use it, on put it at the service of ecosystem. Faced with this problem, we try to demonstrate the importance of the study, and the implementation of methodologies, leading to a closer approach to sustainability. In the present bibliographic review, an approach is made on the subject of Emergence. In addition, it summarizes aspects related to the nomenclature to be used, as well as indicators and indexes more common to evaluate. Finally, some examples are presented, in which the use of this methodology has been, successful, while reflecting on the importance of the subject future research.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[metodología]]></kwd>
<kwd lng="es"><![CDATA[eficiencia]]></kwd>
<kwd lng="es"><![CDATA[análisis emergético]]></kwd>
<kwd lng="es"><![CDATA[ecosistema]]></kwd>
<kwd lng="en"><![CDATA[methodology]]></kwd>
<kwd lng="en"><![CDATA[efficiency]]></kwd>
<kwd lng="en"><![CDATA[emergetic analysis]]></kwd>
<kwd lng="en"><![CDATA[ecosystem]]></kwd>
<kwd lng="en"><![CDATA[sustainability]]></kwd>
</kwd-group>
</article-meta>
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