The implication and potential application of nanoscale metallic nanoparticles as oxygen carriers in CLC are discussed.
CONCLUSION: Compared with conventional sized iron particles, the reduction of particle size to nanoscale can offer a number of advantages, such as increased reactivity, reduced mass resistance and enhanced heat transfer, however, a number of practical factors associated with increased specific surface area
need to be assessed carefully. (C) 2010 Society of Chemical Industry”
“Objective: This longitudinal study aims to gain more insight in both the changes in personal control due to a breast cancer diagnosis, as well as in the stress-buffering effect of personal control.
Methods: Personal IPI-549 mouse control and distress were assessed in breast cancer patients not treated with chemotherapy (n = 47), breast cancer patients treated with chemotherapy (n = 32) and in healthy women (n = 58) at 3, 9 and 15 months after diagnosis.
Results:
Results indicate that personal control was affected only in patients treated with chemotherapy, particularly right after the completion of treatment. Furthermore, the cross-sectional and longitudinal results provide modest support for the stress-buffering potential of control.
Conclusions: The findings and future directions of research on the. role of personal control in the adjustment to cancer will be discussed. Copyright (c) 2008 John Wiley & Sons, Ltd.”
“BACKGROUND: Doramapimod The process of chemical pulp bleaching is based for the most part in chlorine dioxide within Selleck Oligomycin A elemental chlorine free (ECF) technologies. The use of greener alternatives such as bleaching with hydrogen peroxide (P stage) is not widely used owing to selectivity concerns related to transition metal-catalyzed
decomposition reactions. Even at the final stage where peroxide is recognized to boost brightness and improve the brightness stability of the bleached pulp, cellulose degradation often overcomes these advantages. This paper presents the results of studies intended to optimize final peroxide bleaching performance considering two standard ECF industrial bleaching sequences: the conventional DED and the ECF-light OQ(PO) D (stages name: D – chlorine dioxide; E – alkaline extraction; O – oxygen; Q – chelation, (PO) – hydrogen peroxide pressurized with oxygen).
RESULTS: The addition of sodium diethylenetriaminepentaacetate (DTPA) was the most effective option in terms of DED pulp bleachability and selectivity with hydrogen peroxide, as well as in terms of brightness reversion. As regards the OQ(PO)D pulp, a blend of DTPA and magnesium was the most beneficial in those properties.