Update & Career Technical Education, 2000

Departmental report produced by the Department of Education.

Investigation of the Modified Beam-in-Slab Bridge System, Technical Report, 2004, Vol. 1

Technical Report

Implementing the Mechanistic-Empirical Pavement Design Guide: Technical Report, May 2005

With the release of the new Mechanistic-Empirical Pavement Design Guide (MEPDG), pavement design has taken a “quantum” leap forward. The current 1993 design guide is solidly based on the empirical interpretation of the results of the 1960 American Association of State Highway and Transportation Officials (AASHTO) Road Test. This report seeks to outline the technical aspects of the new MEPDG. Full detail is essentially impossible and impractical, since the release of the MEPDG was accompanied by eighteen volumes of technical justification and background. Consequently, this report seeks only to provide a potential user with a practical understanding of the workings of the new guide, with only sufficient technical depth to aid in understanding.

Tariff Equivalent of Technical Barriers to Trade with Imperfect Substitution and Trade Costs, November 2005

The price-wedge method yields a tariff-equivalent estimate of technical barriers to trade (TBT). An extension of this method accounts for imperfect substitution between domestic and imported goods and incorporates recent findings on trade costs. We explore the sensitivity of this revamped TBT estimate to its key determinants (substitution elasticity, preference for home good, and trade cost). We use the augmented approach to investigate the ongoing US-Japan apple trade dispute and find that removing the Japanese TBT would yield limited export gains to the United States. We then draw policy implications of our findings.

Environmental Services - Recycling Technical Assistance,

Iowa is one of the more progressive recycling states in the U.S. due in large part to its environmental technical assistance programs for business. The Iowa Department of Economic Development (IDED), Iowa Department of Natural Resources (IDNR), the Recycle Reuse Technology Transfer Center (RRTTC) and the Iowa Waste Reduction Center (IWRC) work together to offer services that help businesses save money, increase operational efficiencies, enhance regulatory compliance and manage difficult waste management issues.

Iowa Fisheries Research Technical Series No. 75-1 Variations in the abundance of channel catfish year classes in the upper Mississippi River and causative factors Don R. Helms, Fishery Research Biologist Fisheries Section Jerry M. Conley, Superintendent of Fisheries December, 1975

study of channel catfish in the Mississippi River to determine differences in year class abundance and causative factors

Environmental Services - Recycling Technical Assistance, 2010

Iowa is one of the more progressive recycling states in the U.S. due in large part to its environmental technical assistance programs for business. The Iowa Department of Economic Development (IDED), Iowa Department of Natural Resources (IDNR), the Recycle Reuse Technology Transfer Center (RRTTC) and the Iowa Waste Reduction Center (IWRC) work together to offer services that help businesses save money, increase operational efficiencies, enhance regulatory compliance and manage difficult waste management issues.

Compliance Monitoring Report Technical Assistance Tool, 2008

This form requests the minimum information required to demonstrate the extent of compliance with section 223(a)(11), 223(a)(12), 223(a)(13), 223(a)(14) of the JJDP Act of 2002. Many of these reporting requirements may be found in 28 C.F.R. 31.303(f)(5).

Compliance Monitoring Report Technical Assistance Tool, 2009

This form requests the minimum information required to demonstrate the extent of compliance with section 223(a)(11), 223(a)(12), 223(a)(13), 223(a)(14) of the JJDP Act of 2002. Many of these reporting requirements may be found in 28 C.F.R. 31.303(f)(5).

Forestry Practices Manual Technical Guide, June 24, 2005

Technical Guide to Forestry Practices Manual.

Iowa Local Technical Assistance Program 2010 Summary Report and 2011 Continuation Funding Proposal, HR-296, 2010

This document includes a summary of the initiatives and activities that are ongoing or have been completed by the Iowa Local Technical Assistance Program (LTAP) in 2010. It also contains a request for the 2011 continuation of LTAP funding. A brief history of Iowa LTAP is below. In addition, its mission/vision and objectives are noted and an explanation of the new organization used for this report is provided. The remainder of this document includes a description of the Iowa LTAP operations in 2010 and 2011. More specifically, staffing changes and several major initiatives are presented. This is then followed by a discussion of task-by-task 2010 outcomes and proposed 2011 activities.

Occupational research : selected bibliography of Iowa research in vocational-technical education and related areas -- 1960-1967

The Iowa RCU has developed this selected bibliography of Iowa research in Vocational-Technical Education and related areas. Contract research as well as abstracts of masters theses and doctoral dissertations are included. For the most part, these abstracts have been gleaned from research at the three state universities and Drake University.

Occupational research supplement no. 1 : selected bibliography of Iowa research in vocational-technical education and related areas -- 1963-1968

This is a supplement to the selected bibliography of Iowa research in Vocational-Technical Education and related areas that the Iowa RCU developed. Contract research as well as abstracts of masters theses and doctoral dissertations are included.

Occupational research supplement no. 2 : selected bibliography of Iowa research in vocational-technical education and related areas -- 1966-1968

This is supplement no. 2 to the selected bibliography of Iowa research in Vocational-Technical Education and related areas that the Iowa RCU developed. Contract research as well as abstracts of masters theses and doctoral dissertations are included.

The Deleterious Chemical Effects of Concentrated Deicing Solutions on Portland Cement Concrete, Technical Appendices, TR-480, 2008

This research project investigated the effects of concentrated brines of magnesium chloride, calcium chloride, sodium chloride, and calcium magnesium acetate on portland cement concrete. Although known to be effective at deicing and anti-icing, the deleterious effects these chemicals may have on concrete have not been well documented. As a result of this research, it was determined that there is significant evidence that magnesium chloride and calcium chloride chemically interact with hardened portland cement paste in concrete resulting in expansive cracking, increased permeability, and a significant loss in compressive strength. Although the same effects were not seen with sodium chloride brines, it was shown that sodium chloride brines have the highest rate of ingress into hardened concrete. This latter fact is significant with respect to corrosion of embedded steel. The mechanism for attack of hardened cement paste varies with deicer chemical but in general, a chemical reaction between chlorides and cement hydration products results in the dissolution of the hardened cement paste and formation of oxychloride phases, which are expansive. The chemical attack of the hardened cement paste is significantly reduced if supplementary cementitious materials are included in the concrete mixture. Both coal fly ash and ground granulated blast furnace slag were found to be effective at mitigating the chemical attack caused by the deicers tested. In the tests performed, ground granulated blast furnace slag performed better as a mitigation strategy as compared to coal fly ash. Additionally, siloxane and silane sealants were effective at slowing the ingress of deicing chemicals into the concrete and thereby reducing the observed distress. In general, the siloxane sealant appeared to be more effective than the silane, but both were effective and should be considered as a maintenance strategy.