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      <title>Quinze minutos de Ciência by Andreia Sozinho</title>
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      <description>As novidades</description>
      <language>en-us</language>
      <pubDate>2017-09-06 15:33:04 UTC</pubDate>
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         <title>Nanotecnologia</title>
         <author>asozinho</author>
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         <description><![CDATA[<div><br></div><div>O significado de nanotecnologia evoluiu ao longo dos últimos anos. Originalmente, o termo designava  a <strong>engenharia à escala molecular</strong>, construindo-se e manipulando-se sistemas a partir de componentes à nanoescala, tal como as células do nosso organismo que são constituídas por uma variedade de máquinas moleculares. Este conceito de nanotecnologia ainda não foi concretizado, mas é actualmente uma área fértil de investigação. Entretanto, com a evolução na ciência e tecnologia dos materiais, é agora possível construir materiais estruturados à nanoescala que têm propriedades novas e interessantes, como por exemplo roupas revestidas com nanofilamentos de carbono que repelem a água, tal como a fina penugem de um pêssego. O desenvolvimento de nanomateriais, assim como o entusiasmo à volta do termo nanotecnologia, fez com que o seu significado fosse alargado, abrangendo actualmente uma variedade de <strong>tecnologias que manipulam a matéria a uma escala abaixo de 100 nm</strong>. Citando Eric Drexler, considerado por muitos o pai da nanotecnologia, há duas nanotecnologias: <strong>a nanotecnologia do fabrico molecular e a nanotecnologia dos produtos manipulados à nanoescala</strong> (tudo o que tenha nanoestrutura, como por exemplo pequenas partículas ou finos revestimentos). O grande potencial da nanotecnologia no futuro reside provavelmente no fabrico molecular.<br><br><br><br> <a href="http://labvirtual.eq.uc.pt/siteJoomla/index.php?option=com_content&amp;task=view&amp;id=116&amp;Itemid">http://labvirtual.eq.uc.pt/siteJoomla/index.php?option=com_content&amp;task=view&amp;id=116&amp;Itemid</a></div>]]></description>
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         <pubDate>2017-09-17 22:30:17 UTC</pubDate>
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         <title>Datação carbono-14</title>
         <author>asozinho</author>
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         <description><![CDATA[]]></description>
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         <pubDate>2017-09-20 09:19:42 UTC</pubDate>
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      <item>
         <title>Fóssil </title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/189229072</link>
         <description><![CDATA[]]></description>
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         <pubDate>2017-09-20 09:20:45 UTC</pubDate>
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      </item>
      <item>
         <title>Isótopos - Simulação </title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/189232387</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://phet.colorado.edu/pt/simulation/legacy/isotopes-and-atomic-mass" />
         <pubDate>2017-09-20 09:34:26 UTC</pubDate>
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      <item>
         <title>Nanotecnologia </title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/191173311</link>
         <description><![CDATA[]]></description>
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         <pubDate>2017-09-26 11:01:37 UTC</pubDate>
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      <item>
         <title></title>
         <author>asozinho</author>
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         <pubDate>2017-09-26 11:07:52 UTC</pubDate>
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         <title></title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/191175321</link>
         <description><![CDATA[]]></description>
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         <pubDate>2017-09-26 11:10:11 UTC</pubDate>
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         <title></title>
         <author>asozinho</author>
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         <description><![CDATA[]]></description>
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         <pubDate>2017-09-26 11:15:53 UTC</pubDate>
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         <title></title>
         <author>asozinho</author>
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         <description><![CDATA[<div>Potência de base 10.</div>]]></description>
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         <pubDate>2017-09-27 00:13:07 UTC</pubDate>
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      <item>
         <title></title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/195825445</link>
         <description><![CDATA[]]></description>
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         <pubDate>2017-10-10 21:47:12 UTC</pubDate>
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         <title></title>
         <author>asozinho</author>
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         <description><![CDATA[]]></description>
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         <pubDate>2017-10-10 21:52:12 UTC</pubDate>
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         <title></title>
         <author>asozinho</author>
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         <description><![CDATA[]]></description>
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         <pubDate>2017-10-10 21:54:01 UTC</pubDate>
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      <item>
         <title>https://www.youtube.com/watch?v=Z-UO-RZBQ3U</title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/195826667</link>
         <description><![CDATA[]]></description>
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         <pubDate>2017-10-10 21:55:34 UTC</pubDate>
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      <item>
         <title>Tabela Periódica 3D</title>
         <author></author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/196759642</link>
         <description><![CDATA[]]></description>
         <enclosure url="http://graphoverflow.com/graphs/3d-periodic-table.html" />
         <pubDate>2017-10-13 11:36:04 UTC</pubDate>
         <guid>https://padlet.com/asozinho/o286h7a7l5j2/wish/196759642</guid>
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      <item>
         <title></title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/198141914</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.tabelaperiodica.org/tabela-periodica-com-espectros-de-emissao-atomica-dos-elementos/" />
         <pubDate>2017-10-18 09:29:06 UTC</pubDate>
         <guid>https://padlet.com/asozinho/o286h7a7l5j2/wish/198141914</guid>
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      <item>
         <title>Espetros</title>
         <author>vascolima83</author>
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         <description><![CDATA[]]></description>
         <enclosure url="https://www.infopedia.pt/$espetro" />
         <pubDate>2017-10-18 10:58:55 UTC</pubDate>
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      <item>
         <title>Isótopos</title>
         <author>vascolima83</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/198161027</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.google.pt/amp/m.manualdaquimica.uol.com.br/amp/quimica-geral/isotopos.htm" />
         <pubDate>2017-10-18 11:06:06 UTC</pubDate>
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         <title></title>
         <author>vascolima83</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/198161420</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.google.pt/amp/m.mundoeducacao.bol.uol.com.br/amp/quimica/o-atomo-bohr.htm" />
         <pubDate>2017-10-18 11:08:34 UTC</pubDate>
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         <title>Espectro de Riscas</title>
         <author>carlotalourenco</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/198162719</link>
         <description><![CDATA[<div>&nbsp;</div>]]></description>
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         <pubDate>2017-10-18 11:15:59 UTC</pubDate>
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         <title>Tabela Periódica</title>
         <author>TopSecret</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/204275140</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.youtube.com/watch?v=fPnwBITSmgU" />
         <pubDate>2017-11-07 10:42:35 UTC</pubDate>
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      <item>
         <title>Átomo de Hidrogénio</title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/204738431</link>
         <description><![CDATA[<div>&nbsp;Simulação</div>]]></description>
         <enclosure url="https://phet.colorado.edu/pt/simulation/legacy/hydrogen-atom" />
         <pubDate>2017-11-08 10:33:46 UTC</pubDate>
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         <title>A tabela é mesmo Periódica </title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/204739160</link>
         <description><![CDATA[]]></description>
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         <pubDate>2017-11-08 10:36:42 UTC</pubDate>
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      <item>
         <title>Canção da tabela periódica</title>
         <author>ruteavilla</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/208654896</link>
         <description><![CDATA[]]></description>
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         <pubDate>2017-11-20 11:12:13 UTC</pubDate>
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      <item>
         <title>Moléculas 3D</title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/220537260</link>
         <description><![CDATA[]]></description>
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         <pubDate>2018-01-11 12:08:51 UTC</pubDate>
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         <title>Ligação Química</title>
         <author>asozinho</author>
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         <description><![CDATA[]]></description>
         <enclosure url="http://www.educaplus.org/game/naturaleza-del-enlace-quimico" />
         <pubDate>2018-01-11 12:21:31 UTC</pubDate>
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      <item>
         <title>Muito interessante </title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/220936295</link>
         <description><![CDATA[]]></description>
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         <pubDate>2018-01-12 12:36:27 UTC</pubDate>
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         <title>Interações</title>
         <author>cristiana_gonsalves</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/222018634</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://www.youtube.com/watch?v=sO9glkBu_ik" />
         <pubDate>2018-01-17 11:15:17 UTC</pubDate>
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         <title>Tesla</title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/252537793</link>
         <description><![CDATA[<div><br><br></div>]]></description>
         <enclosure url="https://www.youtube.com/watch?v=KPgb3_IDEyE" />
         <pubDate>2018-04-17 12:45:45 UTC</pubDate>
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      <item>
         <title></title>
         <author>asozinho</author>
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         <description><![CDATA[]]></description>
         <enclosure url="https://www.youtube.com/watch?v=ru032Mfsfig" />
         <pubDate>2018-04-17 12:57:27 UTC</pubDate>
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      <item>
         <title></title>
         <author>asozinho</author>
         <link>https://padlet.com/asozinho/o286h7a7l5j2/wish/252544110</link>
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         <enclosure url="https://www.youtube.com/watch?v=mc979OhitAg" />
         <pubDate>2018-04-17 13:00:29 UTC</pubDate>
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