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Détails bibliographiques
Auteur principal:	W. T. Suarez
Format:	Artículo científico
Langue:	pt
Publié:	Universidade Estadual Paulista Júlio de Mesquita Filho 2005
Sujets:	Química paracetamol análise em fluxo formulações farmacêuticas
Accès en ligne:	https://www.redalyc.org/articulo.oa?id=42930103
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Table des matières:

Determinação de paracetamol em produtos farmacêuticos empregando um sistema de análise por injeção em fluxo com geração de ácido nitroso W. T. Suarez H. J. Vieira O. Fatibello-Filho Química paracetamol análise em fluxo formulações farmacêuticas O uso do ácido nitroso para determinação de paracetamol (acetoaminofenol) em formulaçõessólidas e líquidas empregando um sistema de análise por injeção em fluxo é descrito. A determinação dadroga foi realizada pela reação do paracetamol com ácido nitroso gerado em linha e o produto dessa reaçãofoi monitorado em 430 nm em meio alcalino. A curva analítica apresentou uma faixa de concentração deparacetamol variando entre 9,7x10-5 a 6,2x10-3 mol L-1 com um limite de detecção de 2,5x10-5 mol L-1. Osdesvios padrão relativos foram menores que 2% para soluções contendo 1,2x10-4 e 2,8x10-4 mol L-1 deparacetamol (n=10) e uma freqüência de amostragem de 60 determinações por hora foram obtidos. Osresultados da determinação de paracetamol nas formulações farmacêuticas obtidas pelo procedimento emfluxo proposto estão em boa concordância com os resultados obtidos utilizando-se o procedimento daFarmacopéia Americana a um nível de confiança de 95% e dentro de uma faixa aceitável de erro. 2005 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42930103 pt http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Num.1 Vol.30

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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