Annual Report of the Iowa Highway Research Board – Research and Development Activities FY 2010

This report, entitled “Iowa Highway Research Board Research and Development Activities FY 2010” is submitted in compliance with Sections 301.35 and 312.3A, Code of Iowa, which direct the submission of a report of the Secondary Road Research Fund and the Street Research Fund, respectively. T is a report of the status of research and development projects in progress on June 20, 2010. It is also a report on projects completed during the fiscal year beginning July 1, 2009, and ending June 30, 2010. Detailed information on each of the research and development projects mentioned in this report is available from the Research and Technology Bureau, Highway Division, Iowa Department of Transportation. All approved reports are also online for viewing at www.iowadot.gov/operationsresearch/reports.aspx

Iowa Technology Governance Board Annual Report, January 12, 2009

This Technology Governance Board Annual Report provides information on the FY06 – FY10 Information Technology Personnel Spending; FY06 – FY10 Technology Equipment and Services Spending; and FY06 – FY10 Internal IT Expenditures with the Iowa Communications Network and Department of Administrative Services - Information Technology Enterprise. The report also contains a projection of technology cost savings. This report was produced in compliance with Iowa Code §8A.204(3a) and was submitted to the Governor, the Department of Management, and the General Assembly on January 12, 2009.

Iowa Technology Governance Board Annual Report, January 11, 2010

This Technology Governance Board Annual Report provides information on the FY07 – FY11 Information Technology Personnel Spending; FY07 – FY11 Technology Equipment and Services Spending; and FY07 – FY11 Internal IT Expenditures with the Iowa Communications Network and Department of Administrative Services - Information Technology Enterprise. The report also contains a projection of technology cost savings. This report was produced in compliance with Iowa Code §8A.204(3a) and was submitted to the Governor, the Department of Management, and the General Assembly on January 11, 2010.

Iowa Technology Governance Board Annual Report, January 10, 2011

This Technology Governance Board Annual Report provides information on the FY08 – FY12 Information Technology Personnel Spending; FY08 – FY12 Technology Equipment and Services Spending; and FY08 – FY12 Internal IT Expenditures with the Iowa Communications Network and Department of Administrative Services - Information Technology Enterprise. The report also contains a projection of technology cost savings. This report was produced in compliance with Iowa Code §8A.204(3a) and was submitted to the Governor, the Department of Management, and the General Assembly on January 10, 2011.

Annual Report of the Iowa Highway Research Board Research and Development Activities FY 2010

The Highway Division of the Iowa Department of Transportation (Iowa DOT) engages in research and development for two reasons: first, to find workable solutions to the many problems that require more than ordinary, routine investigation; and second, to identify and implement improved engineering and management practices. This report, entitled ―Iowa Highway Research Board Research and Development Activities FY2009‖ is submitted in compliance with Sections 310.36 and 312.3A, Code of Iowa, which direct the submission of a report of the Secondary Road Research Fund and the Street Research Fund, respectively.

Audit report on the Iowa Corn Promotion Board for the years ended August 31, 2010 and 2009

Audit report on the Iowa Corn Promotion Board for the years ended August 31, 2010 and 2009

Annual Report of the Hawk-i Board to the Governor, 2007

Annual Report of the hawk-i Board to the Governor

Annual Report of the Hawk-i Board to the Governor, 2008

Annual Report of the hawk-i Board to the Governor

Annual Report of the Hawk-i Board to the Governor, 2010

Annual Report of the hawk-i Board to the Governor

Annual Report of the Hawk-i Board to the Governor, 2009

Annual Report of the hawk-i Board to the Governor

Report on recommendations to the Iowa Ethics and Campaign Disclosure Board for the year ended June 30, 2010

Audit report of the Iowa Ethics and Campaign Disclosure Board for the year ended June 30, 2010

Report of recommendations to the Public Employment Relations Board for the year ending, June 30, 2010

Report of recommendations to the Public Employment Relations Board for the year ending, June 30, 2010

The effects of electron-hole separation on the photoconductivity of individual metal oxide nanowires

The responses of individual ZnO nanowires to UV light demonstrate that the persistent photoconductivity (PPC) state is directly related to the electron¿hole separation near the surface. Our results demonstrate that the electrical transport in these nanomaterials is influenced by the surface in two different ways. On the one hand, the effective mobility and the density of free carriers are determined by recombination mechanisms assisted by the oxidizing molecules in air. This phenomenon can also be blocked by surface passivation. On the other hand, the surface built-in potential separates the photogenerated electron¿hole pairs and accumulates holes at the surface. After illumination, the charge separation makes the electron¿hole recombination difficult and originates PPC. This effect is quickly reverted after increasing either the probing current (self-heating by Joule dissipation) or the oxygen content in air (favouring the surface recombination mechanisms). The model for PPC in individual nanowires presented here illustrates the intrinsic potential of metal oxide nanowires to develop optoelectronic devices or optochemical sensors with better and new performances.