Open Access. Powered by Scholars. Published by Universities.®

Other Civil and Environmental Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

1,571 Full-Text Articles 4,115 Authors 430,984 Downloads 67 Institutions

All Articles in Other Civil and Environmental Engineering

Faceted Search

1,571 full-text articles. Page 74 of 75.

Development Of An Angular Scanning System For Sensing Vertical Profiles Of Soil Electrical Conductivity, Viacheslav Adamchuk, Ahmad S. Mat Su, Roger A. Eigenberg, Richard B. Ferguson 2011 University of Nebraska-Lincoln

Development Of An Angular Scanning System For Sensing Vertical Profiles Of Soil Electrical Conductivity, Viacheslav Adamchuk, Ahmad S. Mat Su, Roger A. Eigenberg, Richard B. Ferguson

Biological Systems Engineering: Papers and Publications

Apparent soil electrical conductivity (ECa) is typically mapped to define soil spatial variability within an agricultural field. Knowledge of the vertical variability of ECa is desired to define the site‐specific behavior of the soil profile. A pneumatic angular scanning system (PASS) was developed to sense horizontal and vertical changes of ECa on‐the‐go with an electromagnetic induction (EMI) instrument using an angular scanning method. This sensor system consists of a sled with a rotating mechanism, an EMI sensor, an inclinometer, and a pneumatic actuator. The system was evaluated at the University of Nebraska‐Lincoln Agricultural ...


Improved Soil Mixing And Delivery System For A Storm Runoff Simulator, William C. Alms, Thomas G. Franti, David P. Shelton 2011 University of Nebraska-Lincoln

Improved Soil Mixing And Delivery System For A Storm Runoff Simulator, William C. Alms, Thomas G. Franti, David P. Shelton

Biological Systems Engineering: Papers and Publications

An earlier version of a storm runoff simulator to test conservation buffers reproduced target hydrographs and sedigraphs using uniform, fine sand; however, it was unable to uniformly mix and deliver native sediment. The objectives of this work reported were to create a method to process native agricultural sediment, mix a uniform sediment slurry at a target concentration, and create a control system that will deliver the slurry in varying flow rates corresponding to a target sedigraph. Eroded silty clay (14% sand) was scraped, dried, and processed with a hammer mill. A sand (93% sand) and loam (44% sand) were dried ...


Cellular Arrays For Large-Scale Analysis Of Transcription Factor Activity, Abigail D. Bellis, Beatriz Peňalver-Bernabé, Michael S. Weiss, Michael E. Yarrington, Maria V. Barbolina, Angela K. Pannier, Jacqueline S. Jeruss, Linda J. Broadbelt, Lonnie D. Shea 2011 Northwestern University

Cellular Arrays For Large-Scale Analysis Of Transcription Factor Activity, Abigail D. Bellis, Beatriz Peňalver-Bernabé, Michael S. Weiss, Michael E. Yarrington, Maria V. Barbolina, Angela K. Pannier, Jacqueline S. Jeruss, Linda J. Broadbelt, Lonnie D. Shea

Biological Systems Engineering: Papers and Publications

Identifying molecular mechanisms or therapeutic targets is typically based on large-scale cellular analysis that measures the abundance of mRNA or protein; however, abundance does not necessarily correlate with activity. We report a method for direct large-scale quantification of active pathways that employs a cellular array with parallel gene delivery of constructs that report pathway activity. The reporter constructs encode luciferase, whose expression is influenced by binding of transcription factors (TFs), which are the downstream targets of signaling pathways. Luciferase levels are quantified by bioluminescence imaging (BLI), which allows for rapid, noninvasive measurements. Activity profiles by BLI of 32 TFs were ...


Microarray Analysis Of Gene Expression Profiles In Cells Transfected With Nonviral Vectors, Sarah A. Plautz, Gina Boanca, Jean-Jack M. Riethoven, Angela K. Pannier 2011 University of Nebraska-Lincoln

Microarray Analysis Of Gene Expression Profiles In Cells Transfected With Nonviral Vectors, Sarah A. Plautz, Gina Boanca, Jean-Jack M. Riethoven, Angela K. Pannier

Biological Systems Engineering: Papers and Publications

Inefficient gene delivery is a critical factor limiting the use of nonviral methods in therapeutic applications including gene therapy and tissue engineering. There have been few efforts to understand or engineer the molecular signaling pathways that dictate the efficacy of gene transfer. Microarray analysis was used to determine endogenous gene expression profiles modulated during nonviral gene transfer. Nonviral DNA lipoplexes were delivered to HEK 293T cells. Flow cytometry was used to isolate a population of transfected cells. Expression patterns were compared between transfected and nontransfected samples, which revealed three genes that were significantly upregulated in transfected cells, including RAP1A, a ...


Irrigation Efficiency And Uniformity, And Crop Water Use Efficiency, Suat Irmak, Lameck O. Odhiambo, William L. Kranz, Dean E. Eisenhauer 2011 University of Nebraska-Lincoln

Irrigation Efficiency And Uniformity, And Crop Water Use Efficiency, Suat Irmak, Lameck O. Odhiambo, William L. Kranz, Dean E. Eisenhauer

Biological Systems Engineering: Papers and Publications

This Extension Circular describes various irrigation efficiency, crop water use efficiency, and irrigation uniformity evaluation terms that are relevant to irrigation systems and management practices currently used in Nebraska, in other states, and around the world. The definitions and equations described can be used by crop consultants, irrigation district personnel, and university, state, and federal agency personnel to evaluate how efficiently irrigation water is applied and/or used by the crop, and can help to promote better or improved use of water resources in agriculture.

As available water resources become scarcer, more emphasis is given to efficient use of irrigation ...


A Case Study Concerning The Effects Of Controller Response And Turning Movements On Application Rate Uniformity With A Self-Propelled Sprayer, Joe D. Luck, A. Sharda, Santosh Pitla, J. P. Fulton, S. A. Shearer 2011 University of Nebraska-Lincoln

A Case Study Concerning The Effects Of Controller Response And Turning Movements On Application Rate Uniformity With A Self-Propelled Sprayer, Joe D. Luck, A. Sharda, Santosh Pitla, J. P. Fulton, S. A. Shearer

Biological Systems Engineering: Papers and Publications

The use of precision agriculture technologies such as automatic boom section control allows producers to reduce off-target application when applying herbicides. While automatic boom section control provides benefits, pressure differences across the spray boom resulting from boom section actuation may lead to off-rate application errors. Off-rate errors may also result from spray rate controller compensation for ground speed changes or velocity variation across the spray boom during turning movements. This project focused on characterizing application rate variation for three fields located in central Kentucky. GPS coordinates, boom control status, and nozzle pressure data (at 15 nozzle locations) were recorded as ...


Glypican-3 Targeting Of Liver Cancer Cells Using Multifunctional Nanoparticles, James O. Park, Zachary Stephen, Conory Sun, Omid Veiseh, Forrest M. Kievit, Chen Fang, Matthew Leung, Hyejung Mok, Miqin Zhang 2011 University of Washington

Glypican-3 Targeting Of Liver Cancer Cells Using Multifunctional Nanoparticles, James O. Park, Zachary Stephen, Conory Sun, Omid Veiseh, Forrest M. Kievit, Chen Fang, Matthew Leung, Hyejung Mok, Miqin Zhang

Biological Systems Engineering: Papers and Publications

Imaging is essential in accurately detecting, staging, and treating primary liver cancer (hepatocellular carcinoma [HCC]), one of the most prevalent and lethal malignancies. We developed a novel multifunctional nanoparticle (NP) specifically targeting glypican-3 (GPC3), a proteoglycan implicated in promotion of cell growth that is overexpressed in most HCCs. Quantitative real-time polymerase chain reaction was performed to confirm the differential GPC3 expression in two human HCC cells, Hep G2 (high) and HLF (negligible). These cells were treated with biotin-conjugated GPC3 monoclonal antibody (aGPC3) and subsequently targeted using superparamagnetic iron oxide NPs conjugated to streptavidin and Alexa Fluor 647. Flow cytometry demonstrated ...


Reverse Logic - Safety Of Spent Nuclear Fuel Disposal, Antti Lempinen, Marianne Silvan-Lempinen 2010 Åbo Akademi

Reverse Logic - Safety Of Spent Nuclear Fuel Disposal, Antti Lempinen, Marianne Silvan-Lempinen

Antti Lempinen

No abstract provided.


Effects Of Warm-Mix Asphalt Additives On Asphalt Mixture Characteristics And Pavement Performance, Jun Zhang 2010 University of Nebraska-Lincoln

Effects Of Warm-Mix Asphalt Additives On Asphalt Mixture Characteristics And Pavement Performance, Jun Zhang

Civil and Environmental Engineering Theses, Dissertations, and Student Research

The primary objective of this research is to evaluate the feasibility of several WMA mixtures as potential asphalt paving mixtures for Nebraska pavements. To that end, three well-known WMA additives (i.e., Sasobit, Evotherm, and Advera synthetic zeolite) were evaluated. For a more realistic evaluation of the WMA approaches, trial pavement sections of the WMA mixtures and their HMA counterparts were implemented in Antelope County, Nebraska. More than one ton of field-mixed loose mixtures were collected at the time of paving and were transported to the NDOR and UNL laboratories to conduct comprehensive laboratory evaluations and pavement performance predictions of ...


An Exploratory Survey Of Drivers’ Knowledge Of Right Of Way At Freeway On-Ramp Merging Areas, Deogratias Eustace, Stephen Owusu-Ansah, Vamsi Krishna Indupuru 2010 University of Dayton

An Exploratory Survey Of Drivers’ Knowledge Of Right Of Way At Freeway On-Ramp Merging Areas, Deogratias Eustace, Stephen Owusu-Ansah, Vamsi Krishna Indupuru

Civil and Environmental Engineering and Engineering Mechanics Faculty Publications

Motor vehicle crashes are one of the leading causes of death in the United States. The most recent data available show that in 2006 there were almost 6 million police-reported motor vehicle crashes in the United States where a total of 42,642 people were killed and an additional 2.6 million were injured. The majority of these motor vehicle crashes occurred at intersections or within the intersection influence areas. Traffic conflicts occur at intersections due to traffic streams moving in different directions interfering with each other, and as a result they become areas with high potential for traffic crashes ...


Improving Surveying Accuracy And Efficiency In Connecticut: An Accuracy Assessment Of Geoid03 And Geoid09, Thomas H. Meyer, Robert Baron 2010 University of Connecticut

Improving Surveying Accuracy And Efficiency In Connecticut: An Accuracy Assessment Of Geoid03 And Geoid09, Thomas H. Meyer, Robert Baron

Department of Natural Resources and the Environment Articles

Comparing published NAVD 88 Helmert orthometric heights of First-Order bench marks against GPS-determined orthometric heights showed that GEOID03 and GEOID09 perform at their reported accuracy in Connecticut. GPS-determined orthometric heights were determined by subtracting geoid undulations from ellipsoid heights obtained from a network least-squares adjustment of GPS occupations in 2007 and 2008. A total of 73 markers were occupied in these stability classes: 25 class A, 11 class B, 12 class C, 2 class D bench marks, and 23 temporary marks with transferred elevations. Adjusted ellipsoid heights were compared against OPUS as a check. We found that: the GPS-determined orthometric ...


01june2010_Building Collapse_Begunbari, Md. Nurul Alam 2010 Asian Disaster Preparedness Center

01june2010_Building Collapse_Begunbari, Md. Nurul Alam

Md. Nurul Alam

No abstract provided.


Georeferenced Riverine Habitat Mapping In The Big South Fork National River And Recreation Area, James Bryan McConkey 2010 The University of Tennessee

Georeferenced Riverine Habitat Mapping In The Big South Fork National River And Recreation Area, James Bryan Mcconkey

Masters Theses

Abstract

This project describes the development of a river habitat map of the Big South Fork National River and Recreation Area (BISO NRRA) using GPS-based video mapping and image georeferencing techniques. The Big South Fork of the Cumberland River and major tributaries have been floated and mapped with GPS, sonar, and georeferenced under and above water video cameras. Video footage is interpreted for physical bedforms and compiled in an ArcGIS attribute table that can be queried for species specific habitat location.

Underwater video mapping system (UVMS) bedform data includes river characteristic (pool, riffle, run), substrate (bedrock, fines/sand, gravel, cobble ...


The Impacts Of Emergency Vehicle Signal Preemption On Urban Traffic Speed, Hualiang (Harry) Teng, Valerian Kwigizile, Gang Xie, Mohamed S. Kaseko, A. Reed Gibby 2010 University of Nevada, Las Vegas

The Impacts Of Emergency Vehicle Signal Preemption On Urban Traffic Speed, Hualiang (Harry) Teng, Valerian Kwigizile, Gang Xie, Mohamed S. Kaseko, A. Reed Gibby

Civil & Environmental Engineering and Construction Faculty Publications

We used GPS data from paratransit vehicles to evaluate the impact of emergency vehicles on urban traffic speeds. The results indicate that speed variance is significantly higher during emergency preemption and the mean speeds of traffic flowing in the same direction as the emergency vehicle and on crossing streets are lower during preemption than during normal conditions. Regression results indicate that traffic on major arterials and traffic in the opposite direction of the emergency vehicle tend to have higher speed during signal preemption. Signal preemption during peak periods and duration of preemption had a significant negative impact on traffic speeds ...


Analyzing The Effects Of Led Traffic Signals On Urban Intersection Safety, Deogratias Eustace, Valerie E. Griffin, Peter W. Hovey 2010 University of Dayton

Analyzing The Effects Of Led Traffic Signals On Urban Intersection Safety, Deogratias Eustace, Valerie E. Griffin, Peter W. Hovey

Civil and Environmental Engineering and Engineering Mechanics Faculty Publications

In 2002, there were 1,299,000 crashes at signalized intersections in the United States. These crashes account for approximately 21 percent of total crashes and about 24 percent of all fatal and injury collisions. The social and financial impact of this number of collisions is substantial. The Federal Highway Administration (FHWA) and other agencies have recognized the detrimental effects of intersection crashes on our society and continue to fund research that will lead to a decrease in crash frequency. Numerous countermeasures have been tested for their potential to reduce crashes. Infrastructure improvements such as the construction of left-turn lanes ...


City Of Davis Greenbelt Master Plan, Brandon Haydu 2010 California Polytechnic State University, San Luis Obispo

City Of Davis Greenbelt Master Plan, Brandon Haydu

Master's Theses

The City of Davis is currently updating its Parks and Recreation Facilities Master Plan. During the update, greenbelts were identified as a highly used and desired facility. This Greenbelt Master Plan serves as a plan focused on the opportunities greenbelts can provide as recreational and transportation facilities. This report has analyzed community feedback, greenbelt coverage, greenbelt capacity, and existing local, state, and federal design guidelines. The final plan is a set of goals, objectives, policies, and programs, along with a greenbelt map, which is aimed at improving the greenbelt infrastructure in Davis through the year 2020.


Performance Of A Stormwater Filter And Bacteria Inactivation Using Biocidal Media, Alexander Scott Bowerman 2010 California Polytechnic State University, San Luis Obispo

Performance Of A Stormwater Filter And Bacteria Inactivation Using Biocidal Media, Alexander Scott Bowerman

Master's Theses

There are many possible ways to mitigate stormwater pollution, but this study focused on the DrainPacTM catchment basin insert and the feasibility of integrating N-halamine biocidal brominated beads into the filter system. This study was divided into three sections. The first section involved testing a DrainPacTM filter for treatable flow rates, head loss, and removal of solids, oil, and bacteria. The DrainPacTM filter is designed to be installed in a stormwater catch basin. The filter is composed of a 12 x 41 inch metal frame with textile filter media attached to it in a basket shape. The upper portion of ...


Economic Design Of Retaining Wall Using Particle Swarm Optimization With Passive Congregation, Mohammad Khajehzadeh, M R., Taha, A., El-shafie, Mahdiyeh Eslami 2010 SelectedWorks

Economic Design Of Retaining Wall Using Particle Swarm Optimization With Passive Congregation, Mohammad Khajehzadeh, M R., Taha, A., El-Shafie, Mahdiyeh Eslami

Dr. Mahdiyeh Eslami (مهدیه اسلامی)

No abstract provided.


Route Choice Behavior In Risky Networks With Real-Time Information, Michael D. Razo 2010 University of Massachusetts Amherst

Route Choice Behavior In Risky Networks With Real-Time Information, Michael D. Razo

Masters Theses 1911 - February 2014

This research investigates route choice behavior in networks with risky travel times and real-time information. A stated preference survey is conducted in which subjects use a PC-based interactive maps to choose routes link-by-link in various scenarios. The scenarios include two types of maps: the first presenting a choice between one stochastic route and one deterministic route, and the second with real-time information and an available detour. The first type measures the basic risk attitude of the subject. The second type allows for strategic planning, and measures the effect of this opportunity on subjects' choice behavior.

Results from each subject are ...


Numerically Predicting Seepage Gradient Forces And Erosion: Sensitivity To Soil Hydraulic Properties, Garey A. Fox, Derek M. Heeren, Glenn V. Wilson, E. J. Langendoen, Amanda K. Fox, Maria L. Chu-Agor 2010 Oklahoma State University - Main Campus

Numerically Predicting Seepage Gradient Forces And Erosion: Sensitivity To Soil Hydraulic Properties, Garey A. Fox, Derek M. Heeren, Glenn V. Wilson, E. J. Langendoen, Amanda K. Fox, Maria L. Chu-Agor

Biological Systems Engineering: Papers and Publications

Research has suggested that streambank seepage can be an important mechanism of bank instability; however, limited information is available on the level of soil characterization necessary to accurately predict seepage gradient forces and erosion. The objective of this research was to quantify the expected range of predicted seepage gradients for various degrees of site characterization. Uncertainty analysis on seepage gradient predictions was performed relative to variability in soil hydraulic properties. A two-dimensional unsaturated/saturated groundwater flow model was used to simulate a homogeneous soil layer for sand and loamy sand soils packed at various bulk densities, ρb. A pedotransfer ...


Digital Commons powered by bepress