The Latest Word, December 2002

Newsletter by IPERS about Iowa Public Employees’ Retirement System news for retirees.

The Latest Word, September 2002

Newsletter by IPERS about Iowa Public Employees’ Retirement System news for retirees.

The Latest Word, June 2002

Newsletter by IPERS about Iowa Public Employees’ Retirement System news for retirees.

The Latest Word, March 2004

Newsletter by IPERS about Iowa Public Employees’ Retirement System news for retirees.

Wireless E911 Emergency Communications Fund Iowa Homeland Security and Emergency Management Division of the Iowa Department of Public Defense independent auditor's reports, basic financial statements and supplementary information, June 30, 2012.

Audit report on the Wireless E911 Emergency Communications Fund of the Iowa Homeland Security and Emergency Management Division of the Iowa Department of Public Defense for the year ended June 30, 2012

The Latest Word, Winter 2004

Newsletter by IPERS about Iowa Public Employees’ Retirement System news for retirees.

The Latest Word, Summer 2012

Newsletter by IPERS about Iowa Public Employees’ Retirement System news for retirees.

Waste Authority of Jackson County (formerly known as the Jackson County Sanitary Disposal Agency) independent auditor's reports, basic financial statements, required supplementary information, schedule of findings, June 30, 2012

Audit report on the Waste Authority of Jackson County (formerly known as the Jackson County Sanitary Disposal Agency) for the year ended June 30, 2012

Ringgold County Early Childhood Iowa Area independent auditor's reports, basic financial statements, schedule of findings, June 30, 2012

Audit report on the Ringgold County Early Childhood Iowa Area for the year ended June 30, 2012

City of Villisca independent auditor's reports, basic financial statements, supplementary and other information, schedule of findings, June 30

Audit report on the City of Villisca, Iowa for the year ended June 30, 2012

Effect of two types of biosurfactants on phenanthrene availability to the bacterial bioreporter Burkholderia sartisoli strain RP037.

Biosurfactants are tensio-active agents that have often been proposed as a means to enhance the aqueous solubility of hydrophobic organic contaminants, such as polycyclic aromatic hydrocarbons (PAHs). Biosurfactant-producing bacteria such as those belonging to the genus Pseudomonas might therefore enhance PAH availability to PAH-degrading bacteria. We tested the effects of two types of biosurfactants produced by Pseudomonas sp., cyclic lipopeptides and rhamnolipids, on phenanthrene bioavailability. Bioavailability was judged from growth rates on phenanthrene and from specific induction of a phenanthrene-responsive GFP-reporter in Burkholderia sartisoli strain RP037. Co-culturing of strain RP037 with the lipopeptide-producing bacterium Pseudomonas putida strain PCL1445 enhanced GFP expression compared to a single culture, but this effect was not significantly different when strain RP037 was co-cultivated with a non-lipopeptide-producing mutant of P. putida. The addition of partially purified supernatant extracts from the P. putida lipopeptide producer equally did not unequivocally enhance phenanthrene bioavailability to strain RP037 compared to controls. In contrast, a 0.1% rhamnolipid solution strongly augmented RP037 growth rates on phenanthrene and led to a significantly larger proportion of cells in culture with high GFP expression. Our data therefore suggest that biosurfactant effects may be strongly dependent on the strain and type of biosurfactant.