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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.


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 ...


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 ...


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 ...


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 ...


Center Pivot Sprinkler Distribution Uniformity Impacts On The Spatial Variability Of Evapotranspiration, Daniel Howes, Sean Ellenson, Lucas Hoffmann, Franklin Gaudi 2014 California Polytechnic State University - San Luis Obispo

Center Pivot Sprinkler Distribution Uniformity Impacts On The Spatial Variability Of Evapotranspiration, Daniel Howes, Sean Ellenson, Lucas Hoffmann, Franklin Gaudi

Bioresource and Agricultural Engineering

Understanding variable evapotranspiration (ET) throughout a field can help maximize yield on a per-acre basis, as well as assist with proper irrigation scheduling. The results from this study indicate that irrigation system distribution uniformity (DU) has a significant effect on the uniformity of ET during water-stressed periods. The study site involved intensely managed forage (alfalfa and winter grain hay) irrigated by center pivots being supplied with reclaimed water near Palmdale, California. During spring and early summer 2007 the center pivots were operating under deficit irrigation. In 2010, after the installation of reservoirs, water was applied to meet full evapotranspiration (ETc ...


Feedlot Manure Management Considerations Including Anaerobic Digestion Potential And Mineral Retention, Andrea K. Watson 2014 University of Nebraska at Lincoln

Feedlot Manure Management Considerations Including Anaerobic Digestion Potential And Mineral Retention, Andrea K. Watson

Theses and Dissertations in Animal Science

Three anaerobic digestion trials were conducted to evaluate methane production from feedlot manure. As organic matter content of manure decreased, degradation of manure and methane production also linearly decreased (P ≤ 0.02). Quality, or organic matter content of manure, had a greater impact on anaerobic digestion than diet (with and without distillers grains) fed to cattle. Minerals are concentrated in effluent removed from anaerobic digesters.

Knowing mineral retention within cattle allows for more accurate calculation of mineral excretion in manure. Three serial slaughter trials measured mineral retention in growing and finishing cattle. During a growing phase, beef cattle gaining 1 ...


Aquaponics Art, Alexander Horton 2014 California Polytechnic State University - San Luis Obispo

Aquaponics Art, Alexander Horton

Liberal Arts and Engineering Studies

Aquaponics has enormous potential to change the way we farm. I wanted to connect more people to Cal Poly's first aquaponics club by creating a functioning aquaponics art installation that allows people to plant their own plants. This paper is catalog of the design process as a reflection of what this project hopes to accomplish.


Post Harvest Treatment Of Crops Using Emulsified Petroleum, Innovative Research Publications IRP India, Shourya Pokhriyal, , Kanishk Rawat 2014 Innovative Research Publications

Post Harvest Treatment Of Crops Using Emulsified Petroleum, Innovative Research Publications Irp India, Shourya Pokhriyal, , Kanishk Rawat

Innovative Research Publications IRP India

The present invention relates to the post-harvest treatment method for eradication of biological infestation in crops including pests, parasites, funguses, moulds, etc. comprises the step of applying post-harvest to the crop by petroleum oil that has a density at 15° C. in the range of 0.75 to 0.83 g/ml.


Estimating Streambank Erosion Using Gps-Based Watershed-Scale Video Mapping And Usepa Bancs For The Development Of Sediment Tmdls, Kelsey Jo Hensley 2014 University of Tennessee - Knoxville

Estimating Streambank Erosion Using Gps-Based Watershed-Scale Video Mapping And Usepa Bancs For The Development Of Sediment Tmdls, Kelsey Jo Hensley

Masters Theses

According to the United States Environmental Protection Agency (USEPA), sediment is one of the most common water pollutants in the nation’s rivers. Consequently, the identification of streambank locations with high erosion potential is important in reducing sediment input via management and monitoring practices. Furthermore, the estimation of erosion rates and sediment loads can assist in the development of Total Maximum Daily Loads (TMDLs). The objective of this study was to integrate two USEPA-recommended approaches with the Streambank Video Mapping System (SVMS) in order to predict site-specific Total Daily Sediment Loads (TDSLs) and calculate sediment TMDLs for streambank erosion over ...


Field Abundance And Performance Of Hoverflies (Diptera: Syrphidae) On Soybean Aphid, James O. Eckberg, Julie A. Peterson, Colin P. Borsh, Joe M. Kaser, Gregg A. Johnson, John C. Luhman, Donald L. Wyse, George E. Heimpel 2014 University of Minnesota

Field Abundance And Performance Of Hoverflies (Diptera: Syrphidae) On Soybean Aphid, James O. Eckberg, Julie A. Peterson, Colin P. Borsh, Joe M. Kaser, Gregg A. Johnson, John C. Luhman, Donald L. Wyse, George E. Heimpel

West Central Research and Extension Center, North Platte

The management of the soybean aphid Aphis glycines Matsumara is a major challenge to soybean production in the north-central United States. The identification and characterization of the insect predator community has informed integrated pest management strategies by providing insight on predators that can suppress soybean aphid populations. Hoverflies (Diptera: Syrphidae) are known predators of A. glycines, but more information is needed on their diversity, abundance, and performance to evaluate their importance as biological control agents of A. glycines. In this study, syrphid abundance was evaluated across two growing seasons in four soybean fields in east-central Minnesota. Six methods were used ...


Methane Production By A Packed-Bed Anaerobic Digester Fed Dairy Barn Flush Water, Sean Richard Thomson 2014 California Polytechnic State University - San Luis Obispo

Methane Production By A Packed-Bed Anaerobic Digester Fed Dairy Barn Flush Water, Sean Richard Thomson

Master's Theses and Project Reports

Packed-bed digesters are an alternative to covered lagoon digesters for methane production and anaerobic treatment of dilute wastewaters such as dairy barn flush water. The physical media of packed-beds retain biofilms, often allowing increased treatment rates. Previous studies have evaluated several types of media for digestion of dilute wastewaters, but cost and media fouling have setback commercial development. A major operational cost has been effluent recirculation pumping.

In the present effort, a novel approach to anaerobic digestion of flush dairy water was developed at pilot-scale: broken walnut shells were used as a low-cost packed-bed medium and effluent recirculation was replaced ...


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