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Utilisation of respirometry to assess organic matter reduction of effluents from the Camaçari industrial complex (BA, Brazil) BABT
Oliveira,Carla A.; Araújo,Cristiano V. M.; Nascimento,Renato B.; Strotmann,Uwe J.; Silva,Eduardo M. da.
The treatment efficiency of industrial effluents, after biological treatment by activated sludge in aeration tanks (AT), was assessed through the utilisation of respirometry tests at the Cetrel's-wastewater treatment plant (WTP). Samples of the equalised effluent (EE), prior to treatment, and of the treated effluent (TE), after treatment, were analysed. Twenty bioassays batch were carried out to AT (AT-2, AT-3 and AT-4). Each test consisted of: a basic test, a basic test with peptone added, a test using EE and a test using TE. The data showed that there was no statistically significant difference (p>0.05) in the respiration activity between the aeration tanks. Regarding the specific oxygen uptake rate there was a mean reduction of 70.8% between the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Activated sludge; Bacterial toxicity; Oxygen uptake rate; Wastewater treatment plant.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000200016
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The decreased oxygen uptake during progressive exercise in ischemia-induced heart failure is due to reduced cardiac output rate BJMBR
Rolim,N.P.L.; Mattos,K.C.; Brum,P.C.; Baldo,M.V.C.; Middlekauff,H.R.; Negrão,C.E..
We tested the hypothesis that the inability to increase cardiac output during exercise would explain the decreased rate of oxygen uptake (VO2) in recent onset, ischemia-induced heart failure rats. Nine normal control rats and 6 rats with ischemic heart failure were studied. Myocardial infarction was induced by coronary ligation. VO2 was measured during a ramp protocol test on a treadmill using a metabolic mask. Cardiac output was measured with a flow probe placed around the ascending aorta. Left ventricular end-diastolic pressure was higher in ischemic heart failure rats compared with normal control rats (17 ± 0.4 vs 8 ± 0.8 mmHg, P = 0.0001). Resting cardiac index (CI) tended to be lower in ischemic heart failure rats (P = 0.07). Resting heart rate (HR)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heart failure; Oxygen uptake rate; Cardiac index; Coronary ligation; Ischemia.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000200018
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