Removal of 20 to 35% of total petroleum hydrocarbon (TPH) was achieved within 42 days. The molecular fingerprinting performed with 16S-PCR analysis associated with denaturing gradient gel
electrophoresis (DGGE) was used to evaluate changes in the pattern of the bacterial community for all experimental conditions tested. The results revealed that the use of urea caused a smaller change in the dominant bacterial community structure than the treatments using nitrate, showing that this analysis can be a useful complementary tool to evaluate the impact of treatment strategies applied to hydrocarbon-contaminated soil.
CONCLUSIONS: These new solid phase bioreactors showed satisfactory results in the tropical soil bioremediation process, proving that the homogenization system interferes with crude oil SNX-5422 biodegradation efficiency. This new technology can be used as an isolated treatment as well as in association with other classically employed bioremediation technologies. (C) 2010 Society of Chemical Industry”
“Background: Weaning from invasive mechanical ventilation (IMV) in specialized weaning units has been demonstrated to be safe and cost-effective. Success rates and outcomes
vary widely, probably relating to patient factors and unit expertise.
Methods: An audit was undertaken of patients admitted for weaning from IMV at the Austin Hospital Ventilation Weaning CP-868596 datasheet Unit (VWU) between March 2002 and January 2008. Weaning success, complications and GW786034 supplier both in-hospital and long-term mortality were examined and regression analysis was undertaken to examine factors related to these outcomes.
Results: Seventy-eight patients were admitted to the VWU after a median of 27 days of IMV at their referring centre. Weaning success rate (ventilator free or nocturnal non-invasive ventilation only) was 78.2% (n = 61). Inpatient mortality was 10.2% (n = 8) and serious complications were infrequent. Progressive neuromuscular disease (odds ratio 0.10) and sepsis during admission to the VWU(odds
ratio 0.09) were predictive of weaning failure at discharge. Overall survival at 12 months following discharge from the VWU was 66.7% (n = 52) with most survivors residing in the community. Increasing age (hazard ratio 1.93), referral from rural or outer metropolitan centres (hazard ratio 3.57 and 2.37 respectively) and a diagnosis of chronic obstructive pulmonary disease were associated with increased long-term mortality.
Conclusion: High rates of weaning success with infrequent complications and low mortality were achieved in this specialized non-intensive care unit-based weaning unit. The VWU may provide a useful template for the development of similar units elsewhere.”
“BACKGROUND: Municipal solid waste incinerator (MSWI) fly ash is regarded as hazardous waste because it contains various toxic metals. A previous study has shown that fly ash can be detoxified by removal of heavy metals.
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