1% (95% CI: 7.1-15.2, P < .001). Heterogeneity among analyzed studies was significant (I(2) = 92.9, P < .001). No potential publication bias was found. In meta-regression analyses, the proportion of patients with coronary artery disease
was inversely related with LVEF improvement S3I-201 inhibitor (P < .0001) whereas there was no association between the LVEF change and the proportion of patients with nonparoxysmal AF or the proportion of patients without AF recurrences during follow-up.
Conclusions: AF ablation in patients with systolic LV dysfunction results in significant improvement of LV function, but the extent of this improvement is heterogeneous. Patients with coronary artery disease seem to benefit less than patients with other underlying diseases. These results may be explained by patient selection. (J Cardiac Fail 2011;17:964-970)”
“BACKGROUNDA large quantity of heavy metal contaminated wastewater sludge is produced
during the treatment of printed circuit board (PCB) manufacturing wastewater. The PCB wastewater sludge containing high concentrations of heavy metals, such as Cu and Zn, increases the potential for metal recycling. Although bioleaching is indicated as a promising technology to remove metals from electronic scrap and waste PCBs, its application for metal recovery from PCB wastewater sludge is still very limited. The purpose of this study was to develop a thermophilic bioleaching process operated in a sequencing batch Entinostat reactor (SBR) to recover heavy metals from PCB wastewater sludge.
RESULTSThe results show that an increase in sludge solid content from 0.5 NU7441 order to 5% (w/v) decreased the rate of pH reduction during the bioleaching process. It was also found that the efficiency and rate of metal solubilization decreased with increasing sludge solid content. At a sludge solid content of 0.5% (w/v), after four repeated feed/decant cycles with 10days per cycle (40days) of SBR operation, the maximum efficiencies of metal solubilization in the treated sludge were 65% and 100% for Cu and Zn, respectively.
CONCLUSIONThe solubilization efficiency
of heavy metals was lower during SBR operation with a longer 20-daycycle time. Therefore, a shorter 10-daycycle time for SBR operation is preferred for the thermophilic bioleaching of PCB wastewater sludge. In the treated sludge, the potential mobility and environmental risks of heavy metals were decreased significantly after the thermophilic bioleaching process. (c) 2013 Society of Chemical Industry”
“Neutron diffraction data were collected from sintered polycrystalline 0.9BiFeO(3)-0.1PbTiO(3) at temperatures between 293 and 793 K and the crystal and magnetic structures refined by the Rietveld method. An antiferromagnetic Neel temperature of 592 K was determined from a Brillouin fit to the refined magnetic moments with a ground state of 4.34 mu(B), showing no loss of moment per Fe site compared to BiFeO3. Some magnetic order was observed to persist above the Neel temperature.