A Review Of Pesticide Fate And Transport Simulation At Watershed Level Using Swat: Current Status And Research Concerns, 2019 University of California, Davis
A Review Of Pesticide Fate And Transport Simulation At Watershed Level Using Swat: Current Status And Research Concerns, Ruoyu Wang
Cam-Based Passive Variable Friction Device For Structural Control, 2019 University of South Carolina - Columbia
Cam-Based Passive Variable Friction Device For Structural Control, Austin Downey, Connor Theisen, Heather Murphy, Nicholas Anastasi, Simon Laflamme
Civil, Construction and Environmental Engineering Publications
A solution to increasing the resiliency of civil structures with respect to natural and man-made hazards is the implementation of supplemental damping systems. These systems can be constructed using passive, active, and semi-active devices. In particular, passive devices are widely accepted in the field of structural engineering, because they do not require power to operate and can be holistically integrated into the structural design process. This paper investigates the use of 3D printing technology to expand on the possibilities in passive damping, notably in the fabrication of a variable friction device. This device uses a 3D printed cam with a ...
Environmental Fate And Impact Assessment Of Thiobencarb Application In California Rice Fields Using Ricewq, 2019 University of California, Davis
Environmental Fate And Impact Assessment Of Thiobencarb Application In California Rice Fields Using Ricewq, Ruoyu Wang
Pressure Loss Coefficients For Large Mitered Elbows With Diameters Ranging From 36-Inches To 144-Inches, 2019 Utah State University
Pressure Loss Coefficients For Large Mitered Elbows With Diameters Ranging From 36-Inches To 144-Inches, Hayden J. Coombs
All Graduate Theses and Dissertations
When designing a pipeline system, it is important to understand the pressure losses that will occur within the system. One common source of pressure loss is from elbow pipe fittings. There is extensive research available for pressure loss coefficients of elbow pipe fittings, but the research is derived from elbows with relatively smaller pipe diameters. The purpose of this research is to investigate pressure losses associated with larger diameter mitered elbows (36-inches to 144-inches). The dimensions for all mitered elbows considered in this research follow ANSI/AWWA C208-17 recommendations (AWWA 2017).
Due to the large size of the mitered elbows ...
Measuring Nitrogen Transformation In Wastewater Impacted Streams Using In-Situ Benthic Chambers, 2019 Utah State University
Measuring Nitrogen Transformation In Wastewater Impacted Streams Using In-Situ Benthic Chambers, Makenzi Beltran
All Graduate Theses and Dissertations
Acrylic chambers and metal frames were installed at the sediment-water interface of streams impacted by the effluent from wastewater reclamation facilities in order to determine nitrogen rates for nitrification, denitrification, assimilation, ANAMMOX, and DNRA. Each chamber was dosed with an isotopic form of nitrate (15NO3 - ), and both isotopic (15N) and non-isotopic (14N) samples were collected. The project locations included East Canyon Creek near the East Canyon Wastewater Reclamation Facility in Park City, Utah and Box Elder Creek near the Brigham City Wastewater Treatment Plant in Brigham City, Utah. Separate chamber measurements were conducted upstream and downstream ...
Estimating Suspended Solids And Phosphorus Loading In Urban Stormwater Systems Using High-Frequency, Continuous Data, Anthony A. Melcher
All Graduate Theses and Dissertations
The introduction of pavement, buildings, and other impervious surfaces to urban landscapes greatly influences the quantity and quality of urban stormwater runoff. In this study, we designed and implemented modern stormwater monitoring technologies to establish a “smart” stormwater sensor network within the Northwest Field Canal (NWFC), an urban water conveyance located in Logan, Utah, USA. This network was designed to collect flow and water quality data at high frequencies and simultaneously at multiple locations. The observatory’s innovative method of inter-site communication and changing sampling frequencies during storm events was able to capture short duration events at the upstream and ...
Side Shear Strength Of Preformed Socket Connections Suitable For Vertical Precast Members, 2019 Iowa State University
Side Shear Strength Of Preformed Socket Connections Suitable For Vertical Precast Members, Zhao Cheng, Sri Sritharan
Civil, Construction and Environmental Engineering Publications
Use of precast substructure in accelerated bridge construction (ABC) has been gaining popularity due to its advantages over traditional cast-in-place (CIP) construction. When using vertical precast members (e.g., columns and piles) in bridge substructure construction, they must be connected to the adjoining members (e.g., bent cap, pile cap, and abutment) reliably. To accomplish this goal and promote ease of construction, the preformed socket connection has been suggested. This connection is established by inserting the vertical precast member inside a preformed socket in the precast adjoining member and filling the socket with non-shrink, high-strength grout. Using specimens that modeled ...
Wastewater Pipe Consequence Of Failure Model For Risk-Based Asset Management Using Analytic Hierarchy Process, Greta Vladeanu, John Matthews
John C. Matthews
Synopsis Of Engineers Without Borders (Ewb) Trip, Guatemala January 5 To January 12, 2019, Willis Weight
Engineers Without Borders
The Carroll Guatemala Engineers Without Borders (EWB) team assembled at a variety of locations from around the western USA before traveling together as a group into Guatemala City from a flight from Los Angeles. The flight from Los Angeles on Saturday morning departed about 11:00 AM local time. Two of us departed about 6:00 am from the Missoula airport (Willis Weight and Kennedy Bahm) and the following students: Ian Kirby, Josiah Groux, Amelia Schuver, Ericka Seehafer, Mary Van Dyke (health and safety officer), and Amber Pickering (project leader) came in from Portland, Seattle, and SLC). Professional mentor Ryan ...
User Manual - Bmp Trains 2020 Newest Version, 2019 University of Central Florida
User Manual - Bmp Trains 2020 Newest Version, Martin Wanielista
A user's manual to accompany the computer program called BMP Trains 2020. The user's manual provides example problems useful to understanding the program. The user's manual is updated when there is a need to respond to user inputs. The program is used to assess the average annual effectiveness of nutrient removal from combinations of stormwater BMPs.
Concentration Flow Cells For Efficient Salinity Energy Recovery With Carbonized Peat Moss And Molybdenum Disulfide Electrodes, 2019 Louisiana State University and Agricultural and Mechanical College
Concentration Flow Cells For Efficient Salinity Energy Recovery With Carbonized Peat Moss And Molybdenum Disulfide Electrodes, Haihui Zhu
LSU Master's Theses
The globally extractable salinity gradient (SG) energy from the mixing of seawater and river water is estimated to be 3% of worldwide electricity consumption. Here we applied carbonized peat moss (CPM) electrodes and molybdenum disulfide (MoS2) electrodes to a concentration flow cell that is capable of harvesting SG energy based on the electrode (pseudo-)capacitance together with the Donnan potential. The CPM electrodes were made from the visually inexhaustible peat moss by a facile pyrolysis process. With two identical CPM electrodes and a cation-exchange membrane, the cell produced a peak power density of 5.33 W m-2 and ...
Download Bmp Trains 2020 Newest Version, 2019 University of Central Florida
Download Bmp Trains 2020 Newest Version, Martin Wanielista
BMP Trains 2020 is an improvement from all previous versions – most notably because of the departure from the Microsoft Excel platform to being programmed and compiled using the C++ programming language. The entire user interface and much of the internal function has been completely overhauled, while still preserving the essential goal of quantifying pre- and post-development average annual nutrient loadings (Nitrogen and Phosphorus) and determining the average annual effectiveness of a wide variety of Best Management Practices (BMPs) for the nutrients’ removal. The research by Dr. Harvey Harper, Dr. Marty Wanielista, Dr. Mike Hardin, Eric Livingston, and others in computing ...
Assessing Data Availability And Research Reproducibility In Hydrology And Water Resources, 2019 Utah State University
Assessing Data Availability And Research Reproducibility In Hydrology And Water Resources, James H. Stagge, David E. Rosenberg, Adel M. Abdallah, Hadia Akbar, Nour A. Attaallah, Ryan James
There is broad interest to improve the reproducibility of published research. We developed a survey tool to assess the availability of digital research artifacts published alongside peer-reviewed journal articles (e.g. data, models, code, directions for use) and reproducibility of article results. We used the tool to assess 360 of the 1,989 articles published by six hydrology and water resources journals in 2017. Like studies from other fields, we reproduced results for only a small fraction of articles (1.6% of tested articles) using their available artifacts. We estimated, with 95% confidence, that results might be reproduced for only ...
Application Of Computational Tools To Spaghetti-Based Truss Bridge Design, 2019 Purdue University Northwest
Application Of Computational Tools To Spaghetti-Based Truss Bridge Design, Jin Xu, Jiliang Li, Nuri Zeytinoglu, Jinyuan Zhai
ASEE IL-IN Section Conference
Application of Computational Tools to Spaghetti-Based Truss Design
Statics and Strength of Materials are two foundational courses for Mechanical/Civil Engineering. In order to assist students in better understanding and applying concepts to a meaningful design task, SolidWorks and theoretical calculation were used for a spaghetti-bridge design contest with the constraints of given maximum weight and allowable support-material weight. As the first step of this iterative designing process, both extrude feature and structural member were introduced to model planar bridge trusses. Then SolidWorks’ Statics module was used to run FEA analysis of the structural performance in efforts to optimize the ...
Design And Construction Of Full-Scale Testing Apparatus For Evaluating Performance Of Catch Basin Inserts, D. L. Basham, W. C. Zech, W. N. Donald, Michael A. Perez
As stormwater runoff flows over impervious surfaces, it suspends and transports various pollutants from their original locations and often conveys them into municipal separate storm sewer systems (MS4s). Most municipalities and state highway agencies in the United States have developed stormwater management guidelines to ensure compliance with the EPA’s MS4 standards, including allowable methods and practices to remove pollutants from stormwater influent flowing into MS4s. Catch basin inserts (CBIs) have become an increasingly popular option for pollutant removal from stormwater. However, limited data are available to ensure that these practices meet required treatment standards. This study details the design ...
Hyperspectral Image Analysis For Mechanical And Chemical Properties Of Concrete And Steel Surfaces, 2019 Missouri University of Science and Technology
Hyperspectral Image Analysis For Mechanical And Chemical Properties Of Concrete And Steel Surfaces, Liang Fan, Paul Manley, Huaishuai Shang, Abdullah Alhaj, Hongyan Ma, Genda Chen
According to the 2017 ASCE Report Card, 39% and 15% of 614,387 bridges in the U.S. are more than 50 years and 40 to 49 years, respectively. The number of deficient bridges is increasing. One of the most common causes of reinforced concrete deterioration is corrosion of steel reinforcing bars. Currently, most bridges are visually inspected every two years using boom/snooper trucks to get access to various areas to be inspected. The subjective visual inspection often leads to inconsistent results that are less useful in bridge management. Hyperspectral camera, installed on an unmanned aerial vehicle, can potentially ...
Review Of Fiber Optic Sensors For Structural Fire Engineering, 2019 Missouri University of Science and Technology
Review Of Fiber Optic Sensors For Structural Fire Engineering, Yi Bao, Ying Huang, Matthew S. Hoehler, Genda Chen
Reliable and accurate measurements of temperature and strain in structures subjected to fire can be difficult to obtain using traditional sensing technologies based on electrical signals. Fiber optic sensors, which are based on light signals, solve many of the problems of monitoring structures in high temperature environments; however, they present their own challenges. This paper, which is intended for structural engineers new to fiber optic sensors, reviews various fiber optic sensors that have been used to make measurements in structure fires, including the sensing principles, fabrication, key characteristics, and recently-reported applications. Three categories of fiber optic sensors are reviewed: Grating-based ...
Examining The Effect Of Multiple Route Choice Criteria On Hurricane Evacuation Traffic Through External Validation Of Simulations, 2019 Louisiana State University and Agricultural and Mechanical College
Examining The Effect Of Multiple Route Choice Criteria On Hurricane Evacuation Traffic Through External Validation Of Simulations, Haggai D. Davis Iii
No abstract provided.
Dynamics Of Bed Bug Infestations And Control Under Disclosure Policies, 2019 University of Pennsylvania
Dynamics Of Bed Bug Infestations And Control Under Disclosure Policies, Sherrie Xie, Alison L. Hill, Chris R. Rehmann, Michael Z. Levy
Chris R. Rehmann
Bed bugs have reemerged in the United States and worldwide over recent decades, presenting a major challenge to both public health practitioners and housing authorities. A number of municipalities have proposed or initiated policies to stem the bed bug epidemic, but little guidance is available to evaluate them. One contentious policy is disclosure, whereby landlords are obligated to notify potential tenants of current or prior bed bug infestations. Aimed to protect tenants from leasing an infested rental unit, disclosure also creates a kind of quarantine, partially and temporarily removing infested units from the market. Here, we develop a mathematical model ...
Battery-Free Wireless Strain Measurement Using An Antenna Sensor, 2019 Georgia Institute of Technology
Battery-Free Wireless Strain Measurement Using An Antenna Sensor, Yang Wang
A battery-free antenna sensor can wirelessly measure strain on a structure. Bonded to the surface of a base structure, the antenna sensor deforms when the structure is under strain, causing the antenna’s electromagnetic resonance frequency to change. This resonance frequency change can be wirelessly interrogated and recorded by a reader through electromagnetic backscattering. A radio frequency identification (RFID) chip on the sensor harnesses a small amount of energy from the interrogation signal and responds to the reader. The resonance frequency change identified by the reader is then used to determine the strain applied on the structure. The latest antenna ...