<?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>2007-0705</journal-id>
<journal-title><![CDATA[Nova scientia]]></journal-title>
<abbrev-journal-title><![CDATA[Nova scientia]]></abbrev-journal-title>
<issn>2007-0705</issn>
<publisher>
<publisher-name><![CDATA[Universidad de La Salle Bajío A. C., Coordinación de Investigación]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-07052015000200452</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Contribución de la humedad a la formación y transporte de carga de espacio en LDPE mediante la técnica del Pulso Electroacústico]]></article-title>
<article-title xml:lang="en"><![CDATA[Humidity contribution to formation and transport of space charge in LDPE using the Electroacoustic Pulse technique]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tamayo-Ávila]]></surname>
<given-names><![CDATA[Idalberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nieto-Jalil]]></surname>
<given-names><![CDATA[José Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Viteri-Moya]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Roldan-Reascos]]></surname>
<given-names><![CDATA[Gloria Maria Eloisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Argüello-Mejía]]></surname>
<given-names><![CDATA[Ana Violeta]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica Equinoccial Facultad de Ciencias de la Ingeniería ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>EC</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico y de Estudios Superior de Monterrey Departamento de Mecatrónica ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>MX</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2015</year>
</pub-date>
<volume>7</volume>
<numero>14</numero>
<fpage>452</fpage>
<lpage>473</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-07052015000200452&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-07052015000200452&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-07052015000200452&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[En este trabajo se obtuvieron resultados que evidencian la formación de carga de espacio en polietileno de baja densidad, LDPE, causados por la aborción de humedad. Se demostró que mientras mayor es el tiempo de exposición de las muestras a la atmósfera húmeda de vapor de agua, crece la carga acumulada en las interfaces y en el volumen del polietileno. También se pudo observar que la humedad facilita el proceso de conducción de paquetes de carga a través de los films de polietileno, empleando menos tiempo en muestras humedecidas que en las que no se humedecieron. La humedad absorbida por el LDPE contribuye a que existan mayor cantidad de centros de atrapamiento para la carga inyectada desde los electrodos y al aporte de carga volumétrica por ionización debido al efecto de campos eléctricos elevados.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[In this work results that demonstrate the formation of space charge in low density polyethylene, LDPE, caused by humidity absorption are obtained. It was shown that at higher exposure times of the samples to humidity, increases the charge accumulated at the interfaces and volume of polyethylene. It was also observed that humidity facilitates the process of conduction charge packets through the polyethylene films, spending less time in wet samples in which no watered. The humidity absorbed by the LDPE helps to exist as many trapping centers for charge injected from the electrodes and the contribution of bulk charge due to ionization effect of high electric fields.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Carga de espacio]]></kwd>
<kwd lng="es"><![CDATA[humedad]]></kwd>
<kwd lng="es"><![CDATA[polietileno de baja densidad pulso electroacústico]]></kwd>
<kwd lng="en"><![CDATA[Space charge]]></kwd>
<kwd lng="en"><![CDATA[humidity]]></kwd>
<kwd lng="en"><![CDATA[Low density polyethylene]]></kwd>
<kwd lng="en"><![CDATA[Electroacoustic pulsed]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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