Education Commons^™

Stem Opportunities - High School 2019, Huey-Xian Kelly Wong, Madeleine Rauhauser, Annie Morgan Nelson

Honors Expanded Learning Clubs

This publication details the lesson plan for the “Opportunities in STEM” club for the summer of 2019. This club began out of a desire to educate high school students about the opportunities and careers available in the science, technology, engineering, and mathematics fields. Often, students feel that the prospect of entering a STEM field is daunting and out of their grasp. What it means to be a scientist is often unclear, and students never consider opportunities out of the fear of the unknown, particularly when science is associated with complexity and difficulty. This lesson plan integrates experiments with a wealth …

Exploring Engineering Club, Samantha Corey, Stephen Yaghmour

Honors Expanded Learning Clubs

Exploring Engineering Club provides an introduction to a variety of engineering problems and piques the students’ interest in engineering by accompanying the information with hands-on problem solving activities mainly related to structural engineering. The activities will often be done in teams which will teach good teamwork skills, as well as problem solving and critical thinking.

G08-1491 Drinking Water Treatment: Water Softening (Ion Exchange), Sharon Skipton, Bruce I. Dvorak, Shirley Niemeyer

University of Nebraska-Lincoln Extension: Historical Materials

The presence of calcium (Ca) and/or magnesium (Mg) in water results in water being considered "hard." Calcium and magnesium ions in water react with heat, metallic plumbing, and chemical agents such as detergents to decrease the effectiveness of nearly any cleaning task. Hard water can be softened using an ion exchange softening process. This 2008 guide discusses the ion exchange water softening process and related equipment used for household water treatment.

G08-1490 Drinking Water Treatment: Reverse Osmosis, Bruce I. Dvorak, Sharon Skipton

University of Nebraska-Lincoln Extension: Historical Materials

Homeowners can find out more about reverse osmosis (RO) in this 2008 guide, which discusses the principles and process of RO treatment for household drinking water.

Ec08-1488 Drinking Water Treatment: What You Need To Know When Selecting Water Treatment Equipment, Sharon Skipton, Bruce I. Dvorak, Shirley Niemeyer

University of Nebraska-Lincoln Extension: Historical Materials

This 2008 NebGuide explores household water quality and treatment options and can help consumers select a treatment system suited to a particular situation.

G08-1475 Residential Onsite Wastewater Treatment: Mounds For Effluent Treatment, Janet R. Hygnstrom, Sharon Skipton, Wayne Woldt

University of Nebraska-Lincoln Extension: Historical Materials

A mound wastewater treatment system may be right for lots that have slowly permeable soils, sandy soils, or a high water table. Learn the advantages, disadvantages and maintenance considerations of a mound system in this 2008 NebGuide.

Ec06-783 Watermark Granular Matrix Sensor To Measure Soil Matric Potential For Irrigation Management, Suat Irmak, Jose O. Payero, Dean E. Eisenhauer, William L. Kranz, Derrel Martin, Gary L. Zoubek, Jennifer M. Rees, Brandy Vandewalle, Andrew P. Christiansen, Dan Leininger

University of Nebraska-Lincoln Extension: Historical Materials

This 2006 Extension Circular defines soil matric potential and describes principles and operational characteristics of one of the electrical resistance type soil moisture sensors for irrigation management. Examples show how soil matric potential can be used for irrigation management.

The Evaluation Of The Use Of Technology/Electronic Media In Teaching Or Delivering Instructions/Lectures At A Florida University: History, Philosophy And Practices, Iwasan D. Kejawa

Department of Teaching, Learning, and Teacher Education: Dissertations, Theses, and Student Research

According to the previous survey conducted by Florida Atlantic University Student Academic Affairs department in 2001, it was indicated that faculty uses of teaching and learning technologies/electronic instruction media to teach and deliver their lectures at the college were lacking.

With the current research study, investigations were thoroughly made and suggestions are provided on the improvement of faculty performance in the use of technologies at the institution to teach and convey knowledge to their students. In this report, the institutional personnel and its administration are made aware whether all existing technologies are being optimally used by faculty. This study also …

Ec05-774 Recommendations For Harvesting Dry Edible Beans With The John Deere Walker Series Combine, John E. Watkins

University of Nebraska-Lincoln Extension: Historical Materials

Maximum combine performance — characterized by low mechanical seed damage, low field loss, and high field capacity — requires optimization of combine equipment, combine adjustments, and field operating practices. This Extension Circular provides information to maximize performance of the John Deere Walker Series combine in dry edible beans in typical western Nebraska field conditions. These recommendations are presented in three sections, covering initial to more advanced assessments and adjustments.

Ec05-773 Recommendations For Harvesting Dry Edible Beans With The John Deere Sts Series Combine, John A. Smith

University of Nebraska-Lincoln Extension: Historical Materials

Maximum combine performance — characterized by low mechanical seed damage, low field loss, and high field capacity — requires optimization of combine equipment, combine adjustments, and field operating practices. This Extension Circular provides information to maximize performance of the John Deere STS series combine in dry edible beans in typical western Nebraska field conditions. These recommendations are presented in three sections, covering initial to more advanced assessments and adjustments.

G05-1579 Using Modified Atmometers (EtGage®) For Irrigation Management, Suat Irmak, Jose O, Payero, Derrel L. Martin

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide describes the atmometer (evapotranspiration gage) and explains how it can be used for irrigation scheduling. Examlpes are provided to show how information collected with an atmometer can be used to estimate crop water use for corn and soybean.

Nf03-589 New Onsite Wastewater Treatment Law Protects Nebraska's People And Environment, Janet R. Hygnstrom, Sharon Skipton, Wayne Woldt

University of Nebraska-Lincoln Extension: Historical Materials

New Law Requires Certification to Perform On-site Wastewater Treatment Work

Beginning Jan. 1, 2004, a new Nebraska law allows only certified professionals or Nebraska-licensed professional engineers to perform work on on-site wastewater treatment systems (septic systems and individual lagoons). There is a concern that failing septic systems are having a negative impact on the environment and creating potentially harmful health conditions. This legislation will protect public health and the environment by authorizing development of a certification system so that people in the industry have, and demonstrate, the knowledge base necessary to minimize risks.

This NebFact discusses what this law will …

Ec03-702 Precision Agriculture: Applications Of Remote Sensing In Site-Specific Management, Viacheslav I. Adamchuk, Richard L. Perk, James S. Schepers

University of Nebraska-Lincoln Extension: Historical Materials

Precision farming is an emerging agricultural technology that involves managing each crop input on a site-specific basis to reduce waste, increase profits, and maintain the quality of the environment. Remote sensing is a technology that can be used to obtain various spatial layers of information about soil and crop conditions. It allows detection and/or characterization of an object, series of objects, or landscape without having the sensor in physical contact.

Nf02-505 Drinking Water: Chloramines Waters Disinfection In Omaha Metropolitan Utilities District, Sharon Skipton, Bruce I. Dvorak

University of Nebraska-Lincoln Extension: Historical Materials

Bacteria and other disease-causing organisms in drinking water can cause intestinal infections, dysentery, and a variety of other illnesses. Water disinfection reduces disease-causing organisms and prevents the transmission of disease. This publication discusses the disinfection process used by Metropolitan Utilities District and how it will change in 2002.

Ec01-798 Residential On-Site Wastewater Treatment: An Overview, Janet R. Hygnstrom, Wayne Woldt, Sharon Skipton

University of Nebraska-Lincoln Extension: Historical Materials

This publication will answer many questions that homeowners or potential homeowners, realtors and lenders may have about residential on-site wastewater treatment systems. Information is based on Title 124: Rules and Regulations for the Design, Operation and Maintenance of On-site WastewaterTreatment Systems of the Nebraska Department of Environmental Quality (NDEQ), which requires that a dwelling or establishment that generates wastewater have an on-site wastewater treatment system in accordance with those regulations, or be connected to a public wastewater treatment system. An establishment is a house, building, structure, or place that generates more than 1,000 gallons of wastewater per day, generates non-domestic …

Ec01-157 Precision Agriculture: Untangling The Gps Data String, Viacheslav I. Adamchuk

University of Nebraska-Lincoln Extension: Historical Materials

Most people associate precision farming or site-specific management with the global positioning system (GPS). It is used to locate the antenna of aGPS receiver on Earth. GPS provides the opportunity to record a set of geographic coordinates that specify a particular field location. Therefore, field data collected using GPS technology is georeferenced. Processing of these data is complicated, and software packages designed for precision farming applications have built-in capabilities to interpret the GPS receiver output. However, some simple operations can be performed using standard office software. In this case, it is necessary to know the basics behind GPS data. The …

G97-1340 Firming Irrigation Furrows To Improve Irrigation Performance (Revised November 1999), Dean E. Eisenhauer, C. Dean Yonts

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide describes how using a furrow firming wheel improves furrow irrigation performance.

Nearly half of the irrigated acres in Nebraska are furrow irrigated. Higher pumping costs, water restrictions and water shortages are all factors encouraging efficiency-improving irrigation practices. Generally, reduced efficiency with furrow irrigation occurs in two ways: runoff or deep percolation. Although hard to eliminate, runoff can be controlled by: tailwater reuse systems; changing furrow stream size; or changing irrigation set time. Deep percolation is the loss of water below the root zone. The amount of deep percolation caused by irrigation is difficult to estimate unless irrigation application …

G96-1279 Drinking Water: Nitrate-Nitrogen (Revised November 1998), Paul J. Jasa, Sharon Skipton, David L. Varner, Delynn Hay

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide discusses practices recommended to manage nitrate-nitrogen in a domestic water supply. Many Nebraskans have questions about the impact of nitrate in their drinking water. Water quality monitoring shows that nitrate is present in groundwater throughout much of Nebraska and that concentrations are increasing in some areas. Nitrogen is essential for all living things as it is an essential component of protein. Nitrogen exists in the environment in many forms and changes forms as it moves through the nitrogen cycle. However, excessive concentrations of nitrate-nitrogen in drinking water can be hazardous to health, especially for infants and pregnant women.

G96-1296 Gear Up And Throttle Down -- Saving Fuel, Robert Grisso, David P. Shelton, Kenneth Von Bargen

University of Nebraska-Lincoln Extension: Historical Materials

"Gear Up and Throttle Down" is a fuel-saving practice suitable for light drawbar loads (less than 65 percent of full power) when reduced PTO speed is not a problem.

For the most efficient operation, a tractor's engine should be operated near its rated capacity. However, there are many field operations (such as light tillage, planting, cultivating, and hay raking) that do not require full tractor power. This is especially true when older implements, which were sized for a smaller tractor, are used with higher horsepower tractors. Also, many operations should be performed at a fixed field speed.

For these lighter …

Ec95-740 Pollution Prevention: A Tool Kit For Metal Finishers, Janet R. Hygnstrom, Wayne Woldt, Mohamed F. Dahab

University of Nebraska-Lincoln Extension: Historical Materials

Here's a Look at What's Ahead in the Pollution Prevention: A Tool Kit for Metal Finishers:

• Pollution Prevention Contacts for EPA Regions VII and VIII>
• Why the Concern About Waste?>
• Getting Off to a Good Start>
• Hazardous Waste>
• Material Safety Data Sheets>
• Material Safety Data Sheets — A Closer Look>
• Pollution Prevention Strategies for Your Business, Through Changes in: Housekeeping and Maintenance, Inventory, Basic Operations, Equipment, Raw Materials, Process Technology, Waste Exchanges and Recycling>
• Ready to Begin Preventing Pollution?>
• Yard Waste, A Growing Concern>
• Blow Your Horn! Publicize Your Pollution …

G95-1266 Environmental Considerations For Manure Application System Selection, Richard K. Koelsch

University of Nebraska-Lincoln Extension: Historical Materials

Selection and operation of manure application equipment must consider environmental issues along with materials handling and economic factors.

Land application of livestock manure faces growing scrutiny because of potential surface and groundwater contamination and odor nuisances. Producers must consider features of a manure application system that enhance their ability to use manure's nutrients, and provide ways to minimize nuisances experienced by neighbors during manure application.

G95-1267 Manure Applicator Calibration, Richard K. Koelsch

University of Nebraska-Lincoln Extension: Historical Materials

Calibration methods for manure spreaders are discussed here.

Applying manure to land often is considered a waste disposal process rather than a fertilization process. Applying manure as a waste product is causing growing concerns about groundwater and surface water contamiantion. Increasing commercial fertilizer costs and regulatory mandates will encourage application of manure as a nutrient source in the future.

Ec95-739 Pollution Prevention: A Tool Kit For Farm Cooperatives, Janet R. Hygnstrom, Wayne Woldt, Mohamed F. Dahab

University of Nebraska-Lincoln Extension: Historical Materials

Would you like to:

• Reduced your operating costs by using fewer materials and supplies
• Reduce hazardous and nonhazardous waste transportation and disposal costs
• Reduce liability and risks associated with hazardous waste?
• Reduce the paperwork and record keeping requirements associated with hazardous waste?
• Improve workplace safety and employee health?
• Help safeguard the environment?
• Improve your company's image?
• Increase your company's business activities?

If you answered "Yes," to any of the above questions, you may want to look at the materials in this pollution prevention tool kit.

Ec95-743 Pollution Prevention: A Tool Kit For Autobody Repair Shops, Janet R. Hygnstrom, Wayne Woldt, Mohamed F. Dahab

University of Nebraska-Lincoln Extension: Historical Materials

Would you like to:

• Reduce your operating costs by using fewer materials and supplies?
• Reduce hazardous and nonhazardous waste transportation and disposal costs?
• Reduce liability and risks associated with hazardous waste?
• Reduce the paperwork and record keeping requirements associated with hazardous waste?
• Improve workplace safety and employee health?
• Help safeguard the environment?
• Improve your company's image?
• Increase your company's business activities?

If you answered "Yes," to any of the above questions, you may want to look at the materials in this pollution prevention tool kit.

Ec95-742 Pollution Prevention: A Tool Kit For Vehicle Maintenance Shops, Janet R. Hygnstrom, Wayne Woldt, Mohamed F. Dahab

University of Nebraska-Lincoln Extension: Historical Materials

Would you like to:

• Reduce your operating costs by using fewer materials and supplies?
• Reduce hazardous and nonhazardous waste transportation and disposal costs?
• Reduce liability and risks associated with hazardous waste?
• Reduce the paperwork and record keeping requirements associated with hazardous waste?
• Improve workplace safety and employee health?
• Help safeguard the environment?
• Improve your company's image?
• Increase your company's business activities?

If you answered "Yes," to any of the above questions, you may want to look at the materials in this pollution prevention tool kit.

G95-1261 Five Strategies For Extending Machinery Life, Robert D. Grisso, Steven R. Melvin

University of Nebraska-Lincoln Extension: Historical Materials

Machinery ownership and operation is a major crop and livestock production cost. Several items combined can significantly affect costs, improve machine reliability and improve profit margins.

How to Get Maximum Machinery Life

This fact sheet discusses five strategies to achieve maximum farm machinery life. These strategies are: machinery maintenance, oil analysis, machinery storage, engine tune-ups, and avoiding modification of tractor engines.

G94-1217 Rodent-Proof Construction: Drains And Feeding Equipment (Revised November 2003), Scott E. Hygnstrom, Dallas R. Virchow, Dennis M. Ferraro, Richard R. Stowell

University of Nebraska-Lincoln Extension: Historical Materials

Techniques are described in this NebGuide for excluding rodents from drains, pipes, feed bunks, bins, and storage containers.

Rodents often travel along pipes, electrical cables, conduits, drains, and other equipment to gain access to buildings used for housing livestock and storing feed. Rodent-proof materials should be installed to prevent access to buildings along these routes. Additional methods to consider in an integrated pest management (IPM) program include sanitation, toxicants, and trapping.

Ec95-744 Design And Management Of Storage Containment Of Fertilizer And Pesticides, Robert D. Grisso, Delynn Hay, Gerald R. Bodman

University of Nebraska-Lincoln Extension: Historical Materials

Storage, handling and disposal of pesticides and fertilizers have been identified by state and federal agencies as practices that create high risks to surface and groundwater quality. This circular is to assist those who need secondary containment for fertilizers and pesticides. This will help develop a construction plan that should meet the State of Nebraska Containment Regulations and assess facility needs, construction materials, size requirements and management needs.

Ec94-737 Calibrating Anhydrous Ammonia Applicators, William L. Kranz, Charles A. Shapiro, Robert Grisso

University of Nebraska-Lincoln Extension: Historical Materials

Application of agricultural chemicals has come under increased scrutiny from environmental groups and federal regulatory agencies. Nitrogen fertilizer is used in greater quantities than any other agricultural chemical. It also is the contaminant most often found in Nebraska groundwater. Accurate application of nitrogen is important from an environmental and economic viewpoint. Approximately 800 million pounds of nitrogen are applied to 12 million acres of Nebraska cropland each year. Nitrogen applied as anhydrous ammonia (NH₃) accounts for around 40 percent of the total nitrogen applied.

G90-990 Explosion Venting And Suppression Of Bucket Elevator Legs, David Jones

University of Nebraska-Lincoln Extension: Historical Materials

Explosion vents and explosion suppression devices limit the danger and damage associated with grain dust explosions. This NebGuide discusses these devices and design guidelines for application on bucket elevator legs.

The bucket elevator leg has been identified as a major source of grain dust explosions. As a bucket elevator leg conveys grain, the elements necessary for a grain dust explosion are possible. Fuel (grain dust in suspension above the minimum explosive concentration), oxygen and confinement are inherent inside a functioning bucket elevator leg. Introduction of an ignition source will initiate a grain dust explosion.