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Full-Text Articles in Life Sciences

Potential Economic Impacts Of Allocating More Land For Bioenergy Biomass Production In Virginia, Thomas O. Ochuodho, Janaki R. R. Alavalapati, Pankaj Lal, Domena A. Agyeman, Bernabas Wolde, Pralhad Burli Oct 2019

Potential Economic Impacts Of Allocating More Land For Bioenergy Biomass Production In Virginia, Thomas O. Ochuodho, Janaki R. R. Alavalapati, Pankaj Lal, Domena A. Agyeman, Bernabas Wolde, Pralhad Burli

Pankaj Lal

The growing attention to renewable energy and rural development has created greater demand for production of biomass feedstock for bioenergy. However, forest growth rates and the amount of land in most existing forests may not be sufficient to sustainably supply the forest biomass required to support existing forest products industries and the expanding bioenergy industry. Additionally, concerns about agricultural land use competition have dampened expansion of biomass production on agricultural land base. One of the ways to meet the growing forest biomass feedstock demand for bioenergy production is by allocating currently marginal non-forested land for growing bioenergy feedstocks. In Virginia ...


Food, Fuel, And Freeways: An Iowa Perspective On How Far Food Travels, Fuel Usage, And Greenhouse Gas Emissions, Rich S. Pirog, Timothy Van Pelt, Kamyar Enshayan, Ellen Cook Oct 2019

Food, Fuel, And Freeways: An Iowa Perspective On How Far Food Travels, Fuel Usage, And Greenhouse Gas Emissions, Rich S. Pirog, Timothy Van Pelt, Kamyar Enshayan, Ellen Cook

Kamyar Enshayan

Most consumers do not understand today’s highly complex global food system. Much of the food production and processing occurs far away from where they live and buy groceries. External environmental and community costs related to the production, processing, storage, and transportation of the food are seldom accounted for in the food’s price, nor are consumers made aware of these external costs. Examples of external environmental costs are the increased amount of fossil fuel used to transport food long distances, and the increase in greenhouse gas emissions resulting from the burning of these fuels.


Drainage Water Quality Impacts Of Agricultural Management Practices: Effectof Manure Application Timing And Cover Crops, Brian Dougherty, Carl Pederson, Matt Helmers, Michelle Soupir, Dan Andersen, Antonio Mallarino, John Sawyer Sep 2019

Drainage Water Quality Impacts Of Agricultural Management Practices: Effectof Manure Application Timing And Cover Crops, Brian Dougherty, Carl Pederson, Matt Helmers, Michelle Soupir, Dan Andersen, Antonio Mallarino, John Sawyer

John E. Sawyer

A primary objective of this study is to evaluate the impact of various cropping and nutrient management systems on crop yields and drainage water quality. This progress report only includes the first-year corn grain yield results. Treatment comparisons include the impact of early fall vs. late fall vs. spring application of liquid swine manure, nitrification inhibitor with late fall swine manure application, cereal rye cover crop, and gypsum application. These comparisons will be conducted for multiple years and used to develop appropriate manure and nutrient management practices to minimize water contamination potential and enhance the use of swine manure as ...


Effect Of Acetylation On The Mechanical And Thermal Properties Of Soy Flour Elastomers, Kendra A. Allen, Sarah Cady, David Grewell Sep 2019

Effect Of Acetylation On The Mechanical And Thermal Properties Of Soy Flour Elastomers, Kendra A. Allen, Sarah Cady, David Grewell

Sarah Cady

Biobased fillers were utilized as components in soy-elastomer composites. Soy flour is lightweight, low cost, and high strength, which makes it an ideal alternative to petroleum-derived fillers. However, poor interfacial adhesion and low dispersion within the polymer matrix are limiting factors for composite performance. Soy flour chemically pretreated by acetylation was compounded with synthetic rubber elastomers. In general, soy flour (as received) concentration in the composite is proportional to the ultimate strength. However, soy-elastomer composites with acetylated filler performed similar to the neat elastomer. In addition, the pretreated composite's thermal stability increased and exhibited less phase seperation compared to ...


Crop Rotation Effects On N03-N Leaching And Corn Yields Under Manure Management Practices, R. S. Kanwar, D. L. Karlen, C. A. Cambardella, C. Pederson Aug 2019

Crop Rotation Effects On N03-N Leaching And Corn Yields Under Manure Management Practices, R. S. Kanwar, D. L. Karlen, C. A. Cambardella, C. Pederson

Douglas L Karlen

Nonpoint source nutrient pollution is recognized as an important environmental and social issue for several reasons. First, manure from swine production facilities can have serious impacts on the quality of surface and ground water resources. Second, several states are in the process of creating laws to reduce nitrogen and phosphorus loadings from manure to soil and water resources. Third, pollution of water resources from nutrients supplied by manure to croplands will set parameters for developing public policies on the management of manure.


Regenerating Agricultural Landscapes With Perennial Groundcover For Intensive Crop Production, Kenneth J. Moore, Robert P. Anex, Amani E. Elobeid, Shuizhang Fei, Cornelia B. Flora, A. Susana Goggi, Keri L. Jacobs, Prashant Jha, Amy L. Kaleita, Douglas L. Karlen, David A. Laird, Andrew W. Lenssen, Thomas Lubberstedt, Marshall D. Mcdaniel, D. Raj Raman, Sharon L. Weyers Aug 2019

Regenerating Agricultural Landscapes With Perennial Groundcover For Intensive Crop Production, Kenneth J. Moore, Robert P. Anex, Amani E. Elobeid, Shuizhang Fei, Cornelia B. Flora, A. Susana Goggi, Keri L. Jacobs, Prashant Jha, Amy L. Kaleita, Douglas L. Karlen, David A. Laird, Andrew W. Lenssen, Thomas Lubberstedt, Marshall D. Mcdaniel, D. Raj Raman, Sharon L. Weyers

Douglas L Karlen

The Midwestern U.S. landscape is one of the most highly altered and intensively managed ecosystems in the country. The predominant crops grown are maize (Zea mays L.) and soybean [Glycine max (L.) Merr]. They are typically grown as monocrops in a simple yearly rotation or with multiple years of maize (2 to 3) followed by a single year of soybean. This system is highly productive because the crops and management systems have been well adapted to the regional growing conditions through substantial public and private investment. Furthermore, markets and supporting infrastructure are highly developed for both crops. As maize ...


A Novel Ruminant Emission Measurement System: Part Ii. Commissioning, Guilherme D. N. Maia, Brett C. Ramirez, Angela R. Green, Yi Sun, Luis F. Rodríguez, Daniel W. Shike, Richard S. Gates Aug 2019

A Novel Ruminant Emission Measurement System: Part Ii. Commissioning, Guilherme D. N. Maia, Brett C. Ramirez, Angela R. Green, Yi Sun, Luis F. Rodríguez, Daniel W. Shike, Richard S. Gates

Brett Ramirez

The Ruminant Emission Measurement System (REMS) supports research on the relationships between bovine nutrition, genetics, and management strategies by measuring eructated CH4 emissions from ruminal activity. Part I of this series provides the description and design evaluation of the newly developed REMS using uncertainty analysis tools. Part II of this series describes REMS commissioning and documents the whole system and subsystem performance. Subsystem assessments included verification of chamber positive pressurization, thermal environmental control performance, and integrity of the gas sampling system. Integrity of the entire system was verified through a steady-state mass recovery percent (SSMRP) analysis, which compared the ...


A Novel Ruminant Emission Measurement System: Part I. Design Evaluation And Description, Guilherme D. N. Maia, Brett C. Ramirez, Angela R. Green, Luis F. Rodríguez, Jacob R. Segers, Daniel W. Shike, Richard S. Gates Aug 2019

A Novel Ruminant Emission Measurement System: Part I. Design Evaluation And Description, Guilherme D. N. Maia, Brett C. Ramirez, Angela R. Green, Luis F. Rodríguez, Jacob R. Segers, Daniel W. Shike, Richard S. Gates

Brett Ramirez

Methane (CH4) generated by cattle is both a major source of greenhouse gas emissions and a powerful indicator of feed conversion efficiency; thus, accurate quantification of CH4 production is required for addressing future global food security without neglecting environmental impacts. A newly developed Ruminant Emission Measurement System (REMS) supports research on the relationships between bovine nutrition, genetics, and management strategies by measuring eructated CH4 emissions from ruminal activity. REMS is a substantial improvement and extension of the chamber technique, which is considered the standard method to quantify ruminant CH4 generation. Part I of this two-part series describes the design and ...


Climate Dependent Heat Stress Mitigation Modeling For Dairy Cattle Housing, Katlyn R. Devoe, Steven J. Hoff, Brett C. Ramirez, Lance H. Baumgard Aug 2019

Climate Dependent Heat Stress Mitigation Modeling For Dairy Cattle Housing, Katlyn R. Devoe, Steven J. Hoff, Brett C. Ramirez, Lance H. Baumgard

Brett Ramirez

Dairy cattle are susceptible to heat stress with reported milk production loss exceeding 1.2 billion dollars in 2010. Heat stress occurs when the local thermal environment prevents adequate dissipation of metabolic heat production over extended periods. Implementing mitigation strategies in order to reduce heat stress has been a crucial need as dairy housing has transitioned from pasture to indoor housing systems. In order to maximize production, producers need the most effective cooling system to reduce heat stress. A heat stress mitigation model was developed using TMY3 data sets as inputs. The objectives of this research were to: (i) analyze ...


A Novel Approach To Measure, Understand, And Assess The Thermal Environment In Grow-Finish Swine Facilities, Brett Carlos Ramirez Aug 2019

A Novel Approach To Measure, Understand, And Assess The Thermal Environment In Grow-Finish Swine Facilities, Brett Carlos Ramirez

Brett Ramirez

The thermal environment (TE) inside swine production systems substantially affects animal performance as well as facility natural resource usage; hence, our measurement, understanding, and assessment of the TE must be advanced to sustainably meet the animal-protein demand of the growing global population. The TE describes the parameters that influence heat exchange between an animal and its surroundings, with maximum animal performance achieved when minimal thermoregulatory effort is required. Instrumentation and analysis techniques connecting the impact of the TE on total heat loss and subsequently, to animal performance in intensive housing systems are limited. Therefore, the goals of this dissertation research ...


Development And Validation Of A Spatial And Temporal Thermal Environment Sensor Array And Data Acquisition System, Brett C. Ramirez, Yun Gao, Steven J. Hoff Aug 2019

Development And Validation Of A Spatial And Temporal Thermal Environment Sensor Array And Data Acquisition System, Brett C. Ramirez, Yun Gao, Steven J. Hoff

Brett Ramirez

The Thermal Environment (TE) inside swine facilities has a substantial impact on animal growth performance and facility energy usage; therefore, proper control and measurement are required to maintain the optimal TE that maximizes feed efficiency and consumes minimal resources. An inexpensive and novel sensor network capable of capturing the spatial and temporal distribution of TE is needed to help guide control feedback sensor placement and identify potential issues with the facility’s environmental modification system. Hence, the objectives of this research were to: (1) design and construct a Thermal Environment Sensor Array (TESA) and (2) preliminarily evaluate the ability to ...


Heat Stress Adaptations In Pigs, Edith J. Mayorga, David Renaudeau, Brett C. Ramirez, Jason W. Ross, Lance H. Baumgard Aug 2019

Heat Stress Adaptations In Pigs, Edith J. Mayorga, David Renaudeau, Brett C. Ramirez, Jason W. Ross, Lance H. Baumgard

Brett Ramirez

Implications

• Heat stress is a global issue constraining animal agriculture productivity, negatively affects welfare, and reduces production efficiency in many countries.

• The effects of heat stress on pig production will intensify, if climate change continues as predicted.

• To date, modifying the environment is the most effective way to mitigate the effects of heat stress.

• Identifying additional strategies (nutritional and genetics) to maximize pork production during the warm summer months is necessary to satiate a growing demand for high quality meat for human consumption.


Development And Evaluation Of An Evaporation Model For Predicting Sprinkler Interval Time, Jay D. Harmon, Brett C. Ramirez, Steven J. Hoff, John F. Patience Aug 2019

Development And Evaluation Of An Evaporation Model For Predicting Sprinkler Interval Time, Jay D. Harmon, Brett C. Ramirez, Steven J. Hoff, John F. Patience

Brett Ramirez

Heat stress in swine causes decreased productivity and economic losses; hence, heat stress mitigation techniques must be developed to be economically and resource efficient. Current cooling strategies for livestock facilities, such as evaporative coolers or sprinklers, are governed by the Water Vapor Pressure (WVP) concentration gradient between the air (a function of dry-bulb temperature; tdb, Relative Humidity; RH, and atmospheric pressure) and the saturated WVP at the wet surface. Traditional sprinkler control systems operate at fixed ‘off’ intervals (i.e., drying) regardless if the thermal environment (TE) has the capacity or not to evaporate the dispersed water. Therefore, the objectives ...


Impact Based Odor Control System, Brett C. Ramirez, Steven J. Hoff Aug 2019

Impact Based Odor Control System, Brett C. Ramirez, Steven J. Hoff

Brett Ramirez

Biofilters are an effective and economically feasible technique for mitigating odor and other gaseous emissions from livestock production systems. They consist of a media containing a biofilm, where microorganisms break down compounds in livestock building exhaust air into energy and nutrients for growth and reproduction. In addition to capital costs, continuous filtering of exhaust air from mechanically ventilated buildings can be expensive and not always required, if odor is considered nuisance; thus, an automated control system was designed to filter odorous air when surrounding neighbors are most likely to be impacted and bypass the biofilter when odor impact potential is ...


Commissioning Of A Segmented Wand For Evaluating Airflow Performance Of Fans In Livestock And Poultry Housing, Katlyn R. Devoe, Steven J. Hoff, Yun Gao, Brett C. Ramirez Aug 2019

Commissioning Of A Segmented Wand For Evaluating Airflow Performance Of Fans In Livestock And Poultry Housing, Katlyn R. Devoe, Steven J. Hoff, Yun Gao, Brett C. Ramirez

Brett Ramirez

Ventilation rate estimates play an important role in evaluating the thermal environment and determining emission rates from livestock and poultry housing. Currently, the standard method to measure in situ ventilation rates is the Fan Assessment Numeration System (FANS). A similar sensing system is needed for extension personnel that eliminates the labor and set-up requirements of FANS. In order to efficiently and cost-effectively estimate ventilation rates, a Segmented Wand for Evaluating Airflow Performance (SWEAP) was developed. The objectives of this research were to: (i) design and construct a hand-held device capable of measuring in situ fan intake flowrate, (ii) evaluate SWEAP ...


Commissioning Of A Novel Animal Thermal Environment Replication And Measurement System, Brett C. Ramirez, Steven J. Hoff, Yun Gao, Jay D. Harmon Aug 2019

Commissioning Of A Novel Animal Thermal Environment Replication And Measurement System, Brett C. Ramirez, Steven J. Hoff, Yun Gao, Jay D. Harmon

Brett Ramirez

Thermal environment (TE) in livestock production systems effects the animal’s thermal comfort, feed efficiency, and the producer’s operating costs. Accurate assessment of the radiative component of TE requires Mean Radiant Temperature (tmr) measurement with a Black Globe Thermometer (BGT); however, these devices are cost prohibitive (if multiple are needed), have limited commercial availability, and lack confidence for a range of conditions commonly found in a swine facility. The objectives were to design, construct and commission a novel and well-documented TE simulation system named Animal Thermal Environment Replication and Measurement System (AThERMS). Simulations of different combinations of dry-bulb ...


Functional Performance Evaluation Of A Novel Thermal Environment Sensor Array, Brett C. Ramirez, Y. Gao, Steven J. Hoff, Jay D. Harmon Aug 2019

Functional Performance Evaluation Of A Novel Thermal Environment Sensor Array, Brett C. Ramirez, Y. Gao, Steven J. Hoff, Jay D. Harmon

Brett Ramirez

The thermal environment (TE) inside livestock and poultry facilities has a substantial impact on animal growth performance and facility energy usage; therefore, the TE must be quantified correctly to maintain the optimal TE that maximizes feed efficiency and consumes minimal resources. To achieve this goal, a TE sensor array (TESA) and accompanying data acquisition system were previously developed to measure dry-bulb temperature (tdb), black globe temperature, airspeed, and relative humidity (RH). While measurement of each parameter is useful individually, it is more informative when they are combined to estimate and assess the total impact that the TE has on an ...


Thermal Environment Performance And Uniformity Assessment For A Novel Swine Breeding And Gestation Facility, Jay D. Harmon, Brett C. Ramirez, Steven J. Hoff Aug 2019

Thermal Environment Performance And Uniformity Assessment For A Novel Swine Breeding And Gestation Facility, Jay D. Harmon, Brett C. Ramirez, Steven J. Hoff

Brett Ramirez

The Thermal Environment (TE) inside swine facilities has a substantial impact on animal performance and facility energy usage; therefore, proper control and measurement are required to maintain the optimal TE that maximizes performance and consumes minimal energy. Currently, controllers only monitor and describe the TE with dry-bulb temperature (tdb); however, tdb does not account for all the factors that influence the TE. Therefore, a novel Thermal Environment Sensor Array (TESA) network and accompanying data acquisition systems were developed for a preliminary investigation inside a commercial, ~800 hd, positive pressure ventilated, filtered breeding facility located in central Iowa. Data from the ...


An Image Acquisition System For Studying Behaviors Of Sows And Piglets In Farrowing Barns, Suzanne Leonard, Hongwei Xin, Tami Brown-Brandl, Brett C. Ramirez Aug 2019

An Image Acquisition System For Studying Behaviors Of Sows And Piglets In Farrowing Barns, Suzanne Leonard, Hongwei Xin, Tami Brown-Brandl, Brett C. Ramirez

Brett Ramirez

Behavior studies in commercial swine farrowing room environments often need to monitor each set of sow and piglets individually and simultaneously. Autonomous computer imaging systems can overcome this challenge. The system presented here utilizes a time of flight depth sensor and a digital camera to capture depth and digital images of each sow and litter, housed in individual farrowing stalls. Depth sensors were centered above the stalls on a triangular truss spanning the length of the farrowing room and mounted in waterproof boxes with attached lids, enabling them to easily be waterproofed when cleaning the farrowing room. Each depth sensor ...


Development, Validation And Application Of A Mobile Air Filter Testing Unit, Jay D. Harmon, Benjamin C. Smith, Brett C. Ramirez, Steven J. Hoff, John P. Stinn Aug 2019

Development, Validation And Application Of A Mobile Air Filter Testing Unit, Jay D. Harmon, Benjamin C. Smith, Brett C. Ramirez, Steven J. Hoff, John P. Stinn

Brett Ramirez

The recent shift in commercial swine breeding-gestation-farrowing facilities to incorporate filtered ventilation systems raises numerous questions about system performance and longevity of filters. It has been shown that air filtration with ASHRAE standard MERV 14, 15 and 16 type filters are effective at reducing the aerosol spread of PRRSV and Mycoplasma hypopneumonia. The areas that are lacking in current literature is relevant filter testing methodology and criteria for determining filter end of life in an agricultural setting. To address this, a mobile air filter testing unit (MAFT) was developed to address the testing needs for the swine industry to evaluate ...


Thermal Environment Assessment And Controller Performance Comparison For A Wean-Finish Barn, Jay D. Harmon, Brett C. Ramirez, Steven J. Hoff Aug 2019

Thermal Environment Assessment And Controller Performance Comparison For A Wean-Finish Barn, Jay D. Harmon, Brett C. Ramirez, Steven J. Hoff

Brett Ramirez

The thermal environment (TE) inside swine facilities has a substantial impact on animal growth performance and facility energy usage; therefore, proper control and measurement are required to maintain the optimal TE that maximizes feed efficiency and consumes minimal resources. An inexpensive and novel network of 44 thermal environment sensor arrays (TESAs) capable of capturing the spatial and temporal distribution of the TE were deployed in August 2016 inside a two-room (designated as North; N and South; S), wean-finish barn (~1200 hd and 22 TESAs per room) and placed about 1.8 m above the slatted floor. All TESAs simultaneously measured ...


Design And Feasibility Of An Impact-Based Odor Control System, Brett C. Ramirez, Steven J. Hoff, Lun Tong Aug 2019

Design And Feasibility Of An Impact-Based Odor Control System, Brett C. Ramirez, Steven J. Hoff, Lun Tong

Brett Ramirez

Legislation and rural communities are increasingly requesting reductions in odor emitted from swine production facilities. If odor is regarded solely as a nuisance, and not an environmental hazard (as in this research), such that the objective of treating ventilation exhaust air is to prevent odor from impacting nearby receptors, it is unnecessary to treat exhaust air when dispersed odor is not identifiable. This approach maximizes odor reduction potential when most needed, with economic benefit through decreased energy and resource usage by simply operating the mitigation device for less time. The objectives of this article were: to develop an on-off, real-time ...


Design And Feasibility Of A Novel Sprinkler Control Algorithm For Swine Heat Stress Alleviation, Brett C. Ramirez, Steven J. Hoff, Jay D. Harmon Aug 2019

Design And Feasibility Of A Novel Sprinkler Control Algorithm For Swine Heat Stress Alleviation, Brett C. Ramirez, Steven J. Hoff, Jay D. Harmon

Brett Ramirez

No abstract provided.


Effects Of Cage Stocking Density On Feeding Behaviors Of Group-Housed Laying Hens, Rachel Nichole Cook, Hongwei Xin, Dan Nettleton Jul 2019

Effects Of Cage Stocking Density On Feeding Behaviors Of Group-Housed Laying Hens, Rachel Nichole Cook, Hongwei Xin, Dan Nettleton

Dan Nettleton

Quantitative measurement of animal welfare continues to be a challenging task for both the animal agriculture industry and the scientific community. Characterization of animal feeding behavior provides a comparative elucidation of the animal’s behavioral deviation from its norms and thus carries implications for its welfare. This study examines the effects of cage stocking density (348, 387, 426, and 465 cm2; or 54, 60, 66, and 72 in.2 cage floor space per hen) on feeding behavior of W-36 White Leghorn laying hens kept in groups of six hens. The study employed a specialized instrumentation system and computational algorithm. The ...


Feeding Behaviors Of Laying Hens With Or Without Beak Trimming, Kelly E. Persyn, Hongwei Xin, Dan Nettleton, Atsuo Ikeguchi, Richard S. Gates Jul 2019

Feeding Behaviors Of Laying Hens With Or Without Beak Trimming, Kelly E. Persyn, Hongwei Xin, Dan Nettleton, Atsuo Ikeguchi, Richard S. Gates

Dan Nettleton

This study quantifies feeding behavior of W-36 White Leghorn laying hens (77 to 80 weeks old) as influenced by the management practice of beak trimming. The feeding behavior was characterized using a newly developed measurement system and computational algorithm. Non-trimmed (NT) and beak-trimmed (BT) hens showed similar daily feed intake and meal size. However, the BT hens tended to spend longer time feeding (3.3 vs. 2.0 h/d, P < 0.01), which coincided with their slower ingestion rate of 0.43 g/min-kg0.75 vs. 0.79 g/min-kg0.75 for the NT counterparts (P < 0.05). The BT hens had shorter time intervals between meals (101 s vs. 151 s, P < 0.01). Selective feeding, as demonstrated by larger feed particles apparent in the leftover feed, was noted for the BT hens. The leftover feed had a lower crude protein/adjusted crude protein content for the BT birds than that for the NT birds (16.7% vs. 18.7%, P < 0.05). In addition, the leftover feed of the BT birds had lower contents in phosphorus, magnesium, potassium, zinc, and manganese (P < 0.05), although no significant differences were detected in calcium, sodium, or metabolic energy content. Baseline feeding behavior data of this nature may help quantify and ensure the welfare of animals through exercising proper engineering design and/or management considerations.


Reduced-Dimension Clustering For Vegetation Segmentation, Brian L. Steward, Lei F. Tian, Dan Nettleton, Lie Tang Jun 2019

Reduced-Dimension Clustering For Vegetation Segmentation, Brian L. Steward, Lei F. Tian, Dan Nettleton, Lie Tang

Dan Nettleton

Segmentation of vegetation is a critical step in using machine vision for field automation tasks. A new method called reduced-dimension clustering (RDC) was developed based on theoretical considerations about the color distribution of field images. RDC performed unsupervised classification of pixels in field images into vegetation and background classes. Bayes classifiers were then trained and used for vegetation segmentation. The performance of the classifiers trained using the RDC method was compared with that of other segmentation methods. The RDC method produced segmentation performance that was consistently high, with average segmentation success rates of 89.6% and 91.9% across both ...


A Sophomore Level Introduction To Engineering Design Course, Norman Muzzy, Michelle L. Soupir, Steven J. Hoff May 2019

A Sophomore Level Introduction To Engineering Design Course, Norman Muzzy, Michelle L. Soupir, Steven J. Hoff

Norman Muzzy

Iowa State University has a sophomore level course that is known as ABE 218. The objectives of this course include learning a structured approach to engineering design, preparing the students for internships, learning the basics of project management, and connecting the theoretical engineering paper designs to physical reality. This informal paper discusses how the course is structured, identifies the lab projects that are part of the course, and discusses some of the results and challenges associated with ABE 218.


Applying What You Have Learned, Gretchen Mosher, Norman Muzzy, Dana Woolley May 2019

Applying What You Have Learned, Gretchen Mosher, Norman Muzzy, Dana Woolley

Norman Muzzy

Last April, a group of over 110 students presented their Capstone projects in the Department of Agricultural and Biosystems Engineering at Iowa State University. The Capstone program serves students in engineering and technology and is a required component of all ABE undergraduates. Capstone programs in engineering and technology are divided into two phases: a first-semester focus on defining the scope of the problem, and an emphasis on solution development and evaluation in the second semester. At the end of the first semester, the teams present their accomplishments at a poster session, where they receive feedback from ABE faculty and industry ...