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Bibliographic Details
Main Author:	Berlan Rodríguez-Pérez
Format:	Artículo científico
Language:	es
Published:	Instituto Cubano de Investigaciones de los Derivados de la Caña de Azúcar 2014
Subjects:	Agrociencias riego por goteo producción de azúcar Análisis de ciclo de vida
Online Access:	https://www.redalyc.org/articulo.oa?id=223131337007
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Análisis de alternativas de mejora para la producción de azúcar en la provincia de Cienfuegos Berlan Rodríguez-Pérez Ana Margarita Contreras-Moya Elena Rosa-Domínguez Agrociencias riego por goteo producción de azúcar Análisis de ciclo de vida La presente investigación, tiene como objetivo analizar la producción de azúcar en las tres empresas azucareras de Cienfuegos, para cuantificar los impactos ambientales con un enfoque holístico. Se utili- zaron técnicas de recopilación de información tales como: la entrevista personal, la revisión bibliográfica, la tormenta de ideas y el trabajo en equipo, que sirven de apoyo para la utilización de mapas de proce- so, diagrama de flujo, Análisis del Ciclo de Vida y análisis económico. Se tomó como referencia la meto- dología de Análisis de Ciclo de Vida (ACV) que aparece en la serie de normas NC ISO 14040, y se com- plementó con métodos de evaluación del impacto ambiental. A partir del desarrollo de las fases del pro- cedimiento aplicado: definición de alcances y objetivos, análisis de inventario, evaluación de impacto ambiental y análisis de mejora; se lograron identificar y cuantificar los principales impactos que genera el ciclo de vida del azúcar, y analizar como variante de mejora la implementación del riego por goteo, indi- cando su factibilidad ambiental y económica. 2014 artículo científico 0138-6204 https://www.redalyc.org/articulo.oa?id=223131337007 es http://www.redalyc.org/revista.oa?id=2231 ICIDCA. Sobre los Derivados de la Caña de Azúcar application/pdf Instituto Cubano de Investigaciones de los Derivados de la Caña de Azúcar ICIDCA. Sobre los Derivados de la Caña de Azúcar (Cuba) Num.1 Vol.48

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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