Iowa Odor Control Demonstration Project: Landscaping

This 1998 publication discusses landscaping as a barrier that provides visual isolation, aesthetic enhancement, and affects airflow near the site, reducing odor emissions from livestock operations. This fact sheet provides information on effectiveness.https://lib.dr.iastate.edu/extension_ag_pubs/1146/thumbnail.jp

Iowa Odor Control Demonstration Project: Biocovers

This 1998 publication discusses biocovers. They are fibrous biological materials such as straw or chopped cornstalks that are placed on top of liquid storage units to provide a physical aerobic barrier between the liquid manure surface and the air. Read about their effectiveness.https://lib.dr.iastate.edu/extension_ag_pubs/1141/thumbnail.jp

Iowa Odor Control Demonstration Project: Soil Injection

This 1998 publication discusses soil injection to control odors from manure during and after land application. Soil immediately covers the manure, isolating it from the air above. Read about effectiveness.https://lib.dr.iastate.edu/extension_ag_pubs/1148/thumbnail.jp

Iowa Odor Control Demonstration Project: Synthetic Covers

This 1998 publication discusses synthetic covers on top of liquid storage units that provide a physical barrier between liquid manure and the air. Learn about their effectiveness in controlling odor.https://lib.dr.iastate.edu/extension_ag_pubs/1150/thumbnail.jp

Iowa Odor Control Demonstration Project: Solids Separation

This 1998 publication discusses separating solids from the liquid waste stream. This shows promise in helping to reduce odor emissions from livestock operations. Read about its effectiveness.https://lib.dr.iastate.edu/extension_ag_pubs/1149/thumbnail.jp

Iowa Odor Control Demonstration Project: Pit Additives

This 1998 fact sheet discusses different pit additives and their effectiveness. Pit additives have been used for years to reduce odor emissions from livestock operations.https://lib.dr.iastate.edu/extension_ag_pubs/1147/thumbnail.jp

Iowa Odor Control Demonstration Project: Anaerobic Digestion

This 1998 publication discusses anaerobic digestion to stabilize waste solids, generate methane gas, and control odors. Read about its effectiveness.https://lib.dr.iastate.edu/extension_ag_pubs/1140/thumbnail.jp

Concentration and Extraction of Phosphorous from Swine Manure Slurries (as Struvite)

Excessive loading of phosphorus (P) onto agricultural lands has been recognized as a threat to surface water quality. Forced precipitation of struvite (MgNH4PO4•6H2O) from animal waste slurries prior to land application can reduce dissolved reactive P levels in manure slurries. It also offers the potential to recover excess phosphorus from manures and move it to cropping areas that require phosphorus fertilizer inputs. Past work indicates that ~90% of the soluble phosphorus can be concentrated into a precipitate following chemical amendment. This study will provide important information regarding the feasibility of phosphorus recovery as a means of balancing swine manure nutrient content with crop needs. Given the expanding regulations regarding phosphorus management, it is important to develop and test phosphorus management strategies. The sustainability of many animal operations in their current locations will depend upon their ability to meet new regulations requiring phosphorus management as well as nitrogen management

1994 Accounting Hall of Fame induction : Robert Sprouse Accounting Hall of Fame membership [1994]

1994 Accounting Hall of Fame Induction: Robert Sprouse with introduction by Professor Charles T. Horngren (Standford University); Induction citation by Professor Thomas J. Burns (The Ohio State University); Response by Robert T. Sprous

Friction and Molecular Deformation in the Tensile Regime

Recent molecular level studies of energy dissipation in sliding friction have suggested a contribution from adhesive forces. In order to observe this directly, we have constructed a scanning force microscope with decoupled lateral and normal force sensors to simultaneously observe the onset of both friction and attractive forces. Measurements made on self-assembling alkanethiol films with chemically different tail groups show that friction can increase with stronger adhesive intermolecular forces and from the associated tensile deformation and collective motion of the thiol chains