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Bibliographic Details
Main Author:	Clayton Moura de Carvalho
Format:	Artículo científico
Language:	pt
Published:	Universidade Estadual da Paraíba 2005
Subjects:	Biología Zea mays Adubação Orgânica Reciclagem agrícola
Online Access:	https://www.redalyc.org/articulo.oa?id=50050208
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Efeito do lodo de estação de tratamento de despejos de curtume na fase inicial do crescimento do milho Clayton Moura de Carvalho Cicera Josislane Crispim da Silva Maria Gorethe de Sousa Lima Waleska Martins Eloi Cicero Josivan Crispim da Silva Marcelo Mendes Pedroza Biología Zea mays Adubação Orgânica Reciclagem agrícola Este trabalho foi realizado com o objetivo de estudar a viabilidade do uso do lodo de estações de tratamento de despejos de curtume, como adubo orgânico, na plantação da cultura de milho. O lodo estudado, foi oriundo da estação de tratamento de efluentes do Curtume Santo Agostinho localizado em Juazeiro do Norte-CE. Esse lodo, inicialmente passou por uma caracterização físico-química e após esta caracterização, foi constituído um sistema experimental de quatro tratamentos com quatro repetições sendo o primeiro tratamento a testemunha, o segundo com esterco bovino e os tratamentos terceiro, quarto e quinto, com lodo de curtume com percentuais de inoculo de 20% e 40%, respectivamente. A variedade de milho escolhida para esta pesquisa foi a HIBRIDO BR 205. O experimento foi instalado e monitorado nas dependências do CVT, no município do Crato Nos períodos de quinze e trinta dias após o plantio, foram realizadas medições de altura das plantas para posterior comparação de crescimento entre ambas, sendo, também observado, os sintomas visuais observados nos colmos e nas folhas. De acordo com resultados observados, pode ser concluído que os elevados teores de sais de cromo, presentes no lodo, causaram hipermetrofia gradativa às plantas. Portanto para que este lodo possa ser utilizado na agricultura, sem causar danos ao solo e a planta, faz-se necessário uma redução considerável dos componentes acima citados. 2005 artículo científico 1519-5228 https://www.redalyc.org/articulo.oa?id=50050208 pt http://www.redalyc.org/revista.oa?id=500 Revista de Biologia e Ciências da Terra application/pdf Universidade Estadual da Paraíba Revista de Biologia e Ciências da Terra (Brasil) Num.2 Vol.5

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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