Loading isotherms based on the Langmuir, Freundlich and Redlich-Peterson models were determined. The hydrophobic character of the pollutants

appeared as an important parameter related to the sorption process. Equilibrium and kinetic parameters were used to determine the retardation factors for each PAH.

CONCLUSION: The calculated values for the simulation of barrier thickness using both sorbents, taking into account EU requirements for PAHs in groundwater effluent, were perfectly reasonable as a first estimate. The better kinetic properties of MN200 are evident in lower hydraulic residence times and consequently in a lower barrier thickness. (C) 2008 Society of Chemical Industry”
“Contents Ricolinostat mw The

aim of this study was to evaluate the effects of different treatments for induction and synchronization of oestrus and ovulation in seasonally anovulatory mares. Fifteen mares formed the control group (C), while 26 mares were randomly assigned to three treatment groups. Group T1 (n=11) were treated with oral altrenogest (0.044mg/kg; Regumate (R)) during 11days. Group T2 (n=7) was intravaginally treated with 1.38g of progesterone (CIDR (R)) for 11days. In group T3 (n=8), mares were also treated with CIDR (R), but only for 8days. All mares received PGF2 1day after SB203580 research buy finishing the treatment. Sonographic evaluation of follicles, pre-ovulatory follicle size and ovulation time was recorded. Progesterone

and leptin levels were analysed. Results show that pre-ovulatory follicles were developed after the treatment in 88.5% of mares. However, the pre-ovulatory follicle growth was dispersal, and sometimes it was detected when treatment was not finished. While in mares treated with intravaginal selleck chemical device, the follicle was soon detected (1.5 +/- 1.2days and 2.3 +/- 2.0days in T2 and T3 groups, respectively), in T1 group, the pre-ovulatory follicle was detected slightly later (3.9 +/- 1.6days). The interval from the end of treatment to ovulation did not show significant differences between groups (T1=13.1 +/- 2.5days; T2=11.0 +/- 3.6days; T3=13.8 +/- 4.3days). The pregnancy rate was 47.4%, similar to the rate observed in group C (46.7%; p>0.05). Initial leptin concentrations were significantly higher in mares, which restart their ovarian activity after treatments, suggesting a role in the reproduction mechanisms in mares. It could be concluded that the used treatments may be effective for oestrous induction in mares during the late phase of the seasonally anovulatory period. Furthermore, they cannot synchronize oestrus, and then, it is necessary to know the reproductive status of mares when these treatments are used for oestrous synchronization.”
“Background: The results of Randomized Controlled Trials (RCTs) on time-to-event outcomes that are usually reported are median time to events and Cox Hazard Ratio.