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Quantifying Stormwater Runoff Contaminant Mitigation By Bioretention Cells, Patrick J. Walsh 2015 University of Nebraska – Lincoln

Quantifying Stormwater Runoff Contaminant Mitigation By Bioretention Cells, Patrick J. Walsh

Biological Systems Engineering--Dissertations, Theses, and Student Research

This research study has three objectives, quantify the presence and concentration of selected contaminants in urban stormwater runoff from several urban locations within Lincoln, Nebraska, quantify the effectiveness of two, 10-year old bioretention cells, for reducing concentrations of contaminants in effluent and quantify the effectiveness of six rain gardens.

The primary research sites were two bioretention cells using automated samplers collecting grab samples of stormwater runoff influent and effluent for at least six precipitation events during a two-year period. Additional research sites included samplers for two rainfall, six rain garden, two commercial rooftop, two commercial parking lot, and six residential ...


Nebraska Farm Building Data For South-Central Counties Taken From U.S. Census, R. M. Loper 2015 University of Nebraska-Lincoln

Nebraska Farm Building Data For South-Central Counties Taken From U.S. Census, R. M. Loper

Biological Systems Engineering: Papers and Publications

The Material given on the following pages was selected from United States Census data for the years indicated.

It has been arranged to permit analysis and comparison of building trends since 1900, both in the state and in individuals counties. Such a study often reveals areas in which effective educational programs could be developed and indicates the phases of such programs which are needed most.

Unfortunately, complete 1945 figures are not available yet, but space has been left for them so that they may be added when released by the Census Bureau.


Environmental Assessment Of Three Egg Production Systems—Part Ii. Ammonia, Greenhouse Gas, And Particulate Matter Emissions, Timothy A. Shepherd, Yang Zhao, Hong Li, John P. Stinn, Morgan D. Hayes, Hongwei Xin 2015 Iowa State University

Environmental Assessment Of Three Egg Production Systems—Part Ii. Ammonia, Greenhouse Gas, And Particulate Matter Emissions, Timothy A. Shepherd, Yang Zhao, Hong Li, John P. Stinn, Morgan D. Hayes, Hongwei Xin

Agricultural and Biosystems Engineering Publications

As an integral part of the Coalition for Sustainable Egg Supply (CSES) Project, this study simultaneously monitored air emissions of 3 commercially operated egg production systems at the house level and associated manure storage over 2 single-cycle flocks (18 to 78 wk of age). The 3 housing systems were 1) a conventional cage house (CC) with a 200,000-hen capacity (6 hens in a cage at a stocking density of 516 cm2/hen), 2) an enriched colony house (EC) with a 50,000-hen capacity (60 hens per colony at a stocking density of 752 cm2/hen), and 3 ...


Environmental Assessment Of Three Egg Production Systems—Part I: Monitoring System And Indoor Air Quality, Yang Zhao, Timothy A. Shepherd, Hong Li, Hongwei Xin 2015 Iowa State University

Environmental Assessment Of Three Egg Production Systems—Part I: Monitoring System And Indoor Air Quality, Yang Zhao, Timothy A. Shepherd, Hong Li, Hongwei Xin

Agricultural and Biosystems Engineering Publications

To comprehensively assess conventional vs. some alternative laying-hen housing systems under U.S. production conditions, a multi-institute and multi-disciplinary project, known as the Coalition for Sustainable Egg Supply (CSES) study, was carried out at a commercial egg production farm in the Midwestern United States over two single-cycle production flocks. The housing systems studied include a conventional cage house (200,000 hen capacity), an aviary house (50,000 hen capacity), and an enriched colony house (50,000 hen capacity). As an integral part of the CSES project, continual environmental monitoring over a 27-month period described in this paper quantifies indoor gaseous ...


Impact Of Commercial Housing Systems And Nutrient And Energy Intake On Laying Hen Performance And Egg Quality Parameters, D. M. Karcher, D. R. Jones, Z. Abdo, Yang Zhao, Timothy A. Shepherd, Hongwei Xin 2015 Michigan State University

Impact Of Commercial Housing Systems And Nutrient And Energy Intake On Laying Hen Performance And Egg Quality Parameters, D. M. Karcher, D. R. Jones, Z. Abdo, Yang Zhao, Timothy A. Shepherd, Hongwei Xin

Agricultural and Biosystems Engineering Publications

The US egg industry is exploring alternative housing systems for laying hens. However, limited published research related to cage-free aviary systems and enriched colony cages exists related to production, egg quality, and hen nutrition. The laying hen's nutritional requirements and resulting productivity are well established with the conventional cage system, but diminutive research is available in regards to alternative housing systems. The restrictions exist with limited availability of alternative housing systems in research settings and the considerable expense for increased bird numbers in a replicate due to alternative housing system design. Therefore, the objective of the current study was ...


Comparative Evaluation Of Three Egg Production Systems: Housing Characteristics And Management Practices, Yang Zhao, Timothy A. Shepherd, J. C. Swanson, J. A. Mench, D. M. Karcher, Hongwei Xin 2015 Iowa State University

Comparative Evaluation Of Three Egg Production Systems: Housing Characteristics And Management Practices, Yang Zhao, Timothy A. Shepherd, J. C. Swanson, J. A. Mench, D. M. Karcher, Hongwei Xin

Agricultural and Biosystems Engineering Publications

This paper is an integral part of the special publication series that arose from the multidisciplinary and multi-institutional project of the Coalition for Sustainable Egg Supply (CSES). The CSES project involves 3 housing systems for egg production at the same research farm site in the Midwest, USA, namely, a conventional cage (CC) house, an aviary (AV) house, and an enriched colony (EC) house. The CC house (141.4 m L × 26.6 m W × 6.1 m H) had a nominal capacity of 200,000 hens (6 hens in a cage at a stocking density of 516 cm2/hen ...


Mathematical Modeling Of Equilibrium Moisture Content Of Local Cardamom (Amomum Cardamomum Wild), Innovative Research Publications IRP India, Sigit Triwahyudi, Budi Rahardjo, Leopold O. Nelwan, Dyah Wulandani 2015 Innovative Research Publications

Mathematical Modeling Of Equilibrium Moisture Content Of Local Cardamom (Amomum Cardamomum Wild), Innovative Research Publications Irp India, Sigit Triwahyudi, Budi Rahardjo, Leopold O. Nelwan, Dyah Wulandani

Innovative Research Publications IRP India

The objective of this work was done to investigate the effect of temperature and relative humidity on the equilibrium moisture content (EMC) of local cardamom (Amomum cardamomum Wild) and to get the appropriate mathematical models. The EMC of local cardamom were determined by dynamic method using laboratory air dryer at the temperature of 40, 50 and 600C and at the relative humidity of 20, 40 and 60%. Four widely used three parameters sorption isotherms equations such as modified Henderson, modified Chung–Pfost, modified Oswin and modified Halsey were used to fit the experimental data. The accuracy of the model was ...


Concomitant Uptake Of Antimicrobials And Salmonella In Soil And Into Lettuce Following Wastewater Irrigation, J. Brett Sallach, Yuping Zhang, Laurie Hodges, Daniel D. Snow, Xu Li, Shannon L. Bartelt-Hunt 2015 University of Nebraska--Lincoln

Concomitant Uptake Of Antimicrobials And Salmonella In Soil And Into Lettuce Following Wastewater Irrigation, J. Brett Sallach, Yuping Zhang, Laurie Hodges, Daniel D. Snow, Xu Li, Shannon L. Bartelt-Hunt

Civil Engineering Faculty Publications

The use of wastewater for irrigation may introduce antimicrobials and human pathogens into the food supply through vegetative uptake. The objective of this study was to investigate the uptake of three antimicrobials and Salmonella in two lettuce cultivars. After repeated subirrigation with synthetic wastewater, lettuce leaves and soil were collected at three sequential harvests. The internalization frequency of Salmonella in lettuce was low. A soil horizon-influenced Salmonella concentration gradient was determined with concentrations in bottom soil 2 log CFU/g higher than in top soil. Lincomycin and sulfamethoxazole were recovered from lettuce leaves at concentrations as high as 822 ng ...


Evapotranspiration From Natural Vegetation In The Central Valley Of California: Monthly Grass Reference-Based Vegetation Coefficients And The Dual Crop Coefficient Approach, Daniel J. Howes, Phyllis Fox, Paul H. Hutton 2015 California Polytechnic State University, San Luis Obispo

Evapotranspiration From Natural Vegetation In The Central Valley Of California: Monthly Grass Reference-Based Vegetation Coefficients And The Dual Crop Coefficient Approach, Daniel J. Howes, Phyllis Fox, Paul H. Hutton

Bioresource and Agricultural Engineering

Restoration activities in the Central Valley of California and elsewhere require accurate evapotranspiration information, which can then be used for a wide variety of surface and subsurface hydrologic evaluations. However, directly measuring evapotranspiration can be difficult or impossible depending on the evaluation’s time frame. Transferability of measured evapotranspiration in time and space is also necessary but typically requires a weather-based reference. For nonagricultural vegetation, there is at present time no standard reference, which makes the evaluation of a variety of vegetation types from different sources difficult and time-consuming. This paper examines several methods used to estimate evapotranspiration from native ...


Denitrification And Nitrous Oxide Emissions In Annual Croplands, Perennial Grass Buffers, And Restored Perennial Grasslands, Javed Iqbal, Timothy B. Parkin, Matthew J. Helmers, Xiaobo Zhou, Michael J. Castellano 2015 Iowa State University

Denitrification And Nitrous Oxide Emissions In Annual Croplands, Perennial Grass Buffers, And Restored Perennial Grasslands, Javed Iqbal, Timothy B. Parkin, Matthew J. Helmers, Xiaobo Zhou, Michael J. Castellano

Agronomy Publications and Papers

Inclusion of perennial vegetation filter strips (PFSs) in the toeslope of annual cropland watersheds can decrease NO3–N losses to ground and surface waters. Although PFSs are similar to riparian buffers, the processes responsible for NO3–N removal from PFSs are not well understood. Our objectives were to (i) determine the importance of denitrification as a sink for NO3–N loss from PFSs and (ii) evaluate how PFSs alter the biophysical processes that affect the relative importance of N2O and N2 emissions. To address our objectives, we used a coupled field laboratory approach with ...


Comparing Nitrate Sink Strength In Perennial Filter Strips At Toeslopes Of Cropland Watersheds, David C. Mitchell, Xiaobo Zhou, Timothy B. Parkin, Matthew J. Helmers, Michael J. Castellano 2015 Iowa State University

Comparing Nitrate Sink Strength In Perennial Filter Strips At Toeslopes Of Cropland Watersheds, David C. Mitchell, Xiaobo Zhou, Timothy B. Parkin, Matthew J. Helmers, Michael J. Castellano

Agronomy Publications and Papers

Integration of perennial filter strips (PFS) into the toeslopes of agricultural watersheds may decrease downstream nitrate (NO3) losses. However, long-term NO3 removal depends on the relative importance of several NO3 sinks in the PFS. Plant biomass and labile soil organic matter (SOM) are temporary NO3 sinks, while stable SOM is a long-term, but potentially finite, NO3 sink. In contrast, denitrification is a permanent NO3 sink. We investigated the relative importance of these NO3 sinks in PFS at the toeslope of row crop watersheds in Iowa. Using 25- × 30-cm in situ mesocosms, we added ...


Greenhouse Gas And Energy Based Life Cycle Analysis Of Products From The Irish Wood Processing Industry, Fionnuala Murphy, Ger Devlin, Kevin McDonnell 2015 University College Dublin

Greenhouse Gas And Energy Based Life Cycle Analysis Of Products From The Irish Wood Processing Industry, Fionnuala Murphy, Ger Devlin, Kevin Mcdonnell

Fionnuala Murphy

The timber industry in Ireland is an important producer of wood products for export and indigenous use, and supplies significant volumes of sawmill co-products as biomass for energy generation. This research expands existing knowledge on the environmental impacts of wood supply chains in Ireland by widening the analysis to incorporate the wood processing stage. The study determines and analyses energy and material inputs in the production of several timber products; sawnwood, wood chip, wood-based panel (WBP) boards and wood pellets, with an analysis of the resulting greenhouse gas emissions. Forestry operations and transportation make an important contribution to overall emissions ...


Teaching Data Information Literacy Skills In A Library Workshop Setting: A Case Study In Agricultural And Biological Engineering, Marianne S. Bracke, Michael Fosmire 2015 Purdue University

Teaching Data Information Literacy Skills In A Library Workshop Setting: A Case Study In Agricultural And Biological Engineering, Marianne S. Bracke, Michael Fosmire

Data Information Literacy Case Study Directory

This case study was comprised of three workshops for a lab in Agricultural and Biological Engineering. Data Information Literacy topics covered include developing and following a standard operating procedure, search for external data and creating metadata. Materials include a book chapter describing the case study, a data archiving checklist to follow for describing the types of data generated by the lab, a metadata entry form and an evaluation form used to gather feedback for each of the three sessions.


Using Engaged Teaching Methods To Help Livestock Producers Implement Emergency Spill Response, Angela M. Rieck-Hinz, Rachel A. Klein 2015 Iowa State University

Using Engaged Teaching Methods To Help Livestock Producers Implement Emergency Spill Response, Angela M. Rieck-Hinz, Rachel A. Klein

Animal Industry Report

The use of engagement teaching and learning methods was employed as an alternative method to teach decision-making and implementing emergency spill response plans in contrast to traditional lecture. By offering participatory learning, producers can refine and hone decision-making skills, and measure responses against peers and an expert panel. Conversations become two-way and not traditional lecturer and listener. The attendees also have the chance to discuss and exchange ideas with fellow attendees. The implications are a better-prepared audience to deal with emergency response to manure spills and furthermore to protect surface waters.


What Is It Worth? The Economic Value Of Manure Testing, Kelsey B. Regan, Daniel S. Andersen 2015 Iowa State University

What Is It Worth? The Economic Value Of Manure Testing, Kelsey B. Regan, Daniel S. Andersen

Animal Industry Report

In many ways, farming is often an exercise in decision-making in uncertain conditions. Agricultural systems are complex, highly variable, and conditions are continuously changing. Moreover, the variable conditions mean that the farmer often lacks information that could be used to make more informed decisions. Sampling and testing can provide farmers with more information, which they can use to improve their decisions. To evaluate the monetary value of manure testing, an economic model was developed. Using published literature values of manure nutrient concentrations and other agronomic factors as inputs, this model assesses how production expenses and incomes change with knowledge of ...


Development And Use Of A Survey Tool To Determine The Efficacy Of Livestock Truck Washes In Iowa, Amber M. Danielson, Anna K. Johnson, Kenneth J. Stalder, Rodney B. Baker, Troy Bigelow, Daniel S. Andersen 2015 Iowa State University

Development And Use Of A Survey Tool To Determine The Efficacy Of Livestock Truck Washes In Iowa, Amber M. Danielson, Anna K. Johnson, Kenneth J. Stalder, Rodney B. Baker, Troy Bigelow, Daniel S. Andersen

Animal Industry Report

The transmission of disease among livestock farms could be addressed by the efficiency of truck washes to clean and disinfect trailers used for transporting animals. Collecting swab samples from trailers and cabs of identified truck wash trailers will help to determine the proper procedures and steps needed to reduce the transmission of disease. Truck washes in the state of Iowa were identified and invited to participate in a questionnaire that will provide helpful information for this research. The main goals of this study are to 1) determine the areas in the truck washing process that pose a high risk to ...


Demonstrating Farrowing Alternatives For Small-Farms: Insulated Tents For Sows And Pigs, Project Summary, Peter J. Lammers, Jay D. Harmon, Lyle T. Rossiter, Mark S. Honeyman 2015 Illinois State University

Demonstrating Farrowing Alternatives For Small-Farms: Insulated Tents For Sows And Pigs, Project Summary, Peter J. Lammers, Jay D. Harmon, Lyle T. Rossiter, Mark S. Honeyman

Animal Industry Report

Farmers raising pigs for niche markets are usually prohibited from using farrowing crates and must provide bedding and greater space per sow than typical commodity production. Because current consumer expectations dictate that pigs be produced year-round, crate-free farrowing options for cold weather are necessary and many niche pork companies will not accept new producers into their program unless they agree to farrow pigs during winter months. Several crate-free farrowing systems for cold weather have been demonstrated in Iowa, however those alternatives generally require a permanent, well-insulated structure and/or tremendous amounts of energy to provide a suitable environment for the ...


Determining Soil Erosion With Varying Corn Stover Cover Factors, Nicole K. Koeninger 2015 University of Kentucky

Determining Soil Erosion With Varying Corn Stover Cover Factors, Nicole K. Koeninger

Theses and Dissertations--Biosystems and Agricultural Engineering

Since the Dust Bowl, conservation agriculture has become a common practice globally. Because of the rising interest in the use of corn biomass as a feedstock for biofuel production, the effects of corn stover removal on soil erosion were explored. It was hypothesized that selective harvesting strategies would impact soil erosion differently across a variety of slopes. Soil erosion boxes were constructed, and a rainfall simulator with an intensity of 30 mm hr-1 for 46 min was used to create runoff from slopes of 1, 5, and 10% and three cover factor treatments (no removal and two simulated corn ...


An Analysis Of Current And Future Wind Energy Gain Potential For Central Iowa, Farrokh Sharifi, Nastaran Hashemi 2015 Iowa State University

An Analysis Of Current And Future Wind Energy Gain Potential For Central Iowa, Farrokh Sharifi, Nastaran Hashemi

Mechanical Engineering Publications and Papers

Using a significant quantity of fossil fuels has adverse impacts on our lives and will affect future generations. Additionally, there are limited and decreasing numbers of non-renewable resources around the world. In contrast, renewable resources are not depleted and provide energy with negligible pollution. Wind energy is one of the more common renewable energy resources. This project aims to evaluate Iowa's wind energy potential and to provide suggestions to improve the future well‐being of this state. A preliminary analysis shows that Iowa has great potential for wind energy. Based on the preliminary analysis, Ames, Iowa, is selected as ...


Perceptions Of Agricultural College Students On The Relationship Between Quality And Safety In Agricultural Work Environments, Sai K. Ramaswamy, Gretchen A. Mosher 2015 Iowa State University

Perceptions Of Agricultural College Students On The Relationship Between Quality And Safety In Agricultural Work Environments, Sai K. Ramaswamy, Gretchen A. Mosher

Agricultural and Biosystems Engineering Publications

Agriculture is a high-hazard industry that employs a large number of young workers below the age of 25. Recent studies have documented a strong positive correlation between quality management in agriculture and occupational safety as perceived by agricultural workers. Younger workers have been found to be at higher risk for occupational injuries and fatalities in agriculture. Furthermore, college students in agriculture have minimal exposure to safety and quality management principles in their coursework and thus may not be aware that the two concepts are associated. Little research has studied how young workers perceive the relationship between safety and quality and ...


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