Search
Now showing items 31-40 of 267
Identification of Factors Contributing to Geographic Scale and Mode Choice of Long-Distance Travel
(2014-07-11)
As long-distance travel increases it is emerging as an increasingly important consideration in transportation planning. Not only is this in response to an increase in magnitude but also in recognition that such trips possess ...
Immobilization of Mercury by Stabilized FeS Nanoparticles and Effects of Oil Dispersant on Sorption/Desorption and Photodegradation of Polycyclic Aromatic Hydrocarbons
(2014-04-25)
Iron sulfide (FeS) nanoparticles were prepared with sodium carboxymethyl cellulose (CMC) as a stabilizer, and tested for enhanced removal of mercury (Hg(II)) from water, soil and sediment. The presence of CMC at ≥0.03 wt.% ...
Understanding Unsteady Flow and Modeling Water Quality Dynamics in the Coastal Systems under Various Hydrological and Climate Scenarios
(2014-05-12)
Three dimensional hydrodynamic Environmental Fluid Dynamics Code (EFDC) model was used to simulate flow, temperature, dye, age of tracer, and salinity in the Alabama coastal systems. The study area Perdido Bay and Wolf Bay ...
Compressive Strength and Modulus of Elasticity Relationships for Alabama Prestressed Concrete Bridge Girders
(2014-07-09)
The state of Alabama constructs many of its bridges using precast, prestressed concrete bridge girders. There is a desire to more accurately predict girder cambers through the time of deck placement. Proper understanding ...
Catenary Action in Steel Framed Structures with Autoclaved Aerated Concrete Infill & Buckling Restrained Braces
(2014-12-04)
The progressive collapse of structures is considered a major concern for designers since the Ronan Point incident. Preventing and mitigating progressive collapse has become a serious issue for all types of buildings. ...
Evaluation of Inlet Protection Practices (IPPs) Using Large-Scale Testing Techniques
(2014-11-24)
Most roadway construction efforts disturb existing vegetation thereby exposing bare soil to environmental variables that cause erosion. Soil eroded during storm events is conveyed by stormwater runoff and may become ...
Predicting Time-Dependent Deformations in Prestressed Concrete Girders
(2014-11-05)
A prestressed concrete girder camber prediction program, which utilizes a time-step approach, was improved to a new version including modifications, new features, and the fib Model Code 2010 material prediction model. The ...
Performance of Multi-Phase Passive Control Systems in Steel Structures
(2014-12-17)
Earthquake resistant buildings can experience significant damage during an event. A multi-phase passive control system (MPCS) was developed to reduce structural damage, repair costs, and downtime of buildings subjected to ...
Connection Demand Prediction for the Design of Precast Concrete Wall Panels Subjected to Blast Loads
(2015-01-09)
One challenge in design of structures for highly impulsive loading is accurately predicting the peak transient shear and the corresponding connection force demand at supports. Single-degree-of-freedom (SDOF) approaches ...
A Numerical Investigation on High-Reynolds-Number Gravity Currents in Pressurized and Free-Surface Systems using Shallow Water Equation and Integral Model Approaches
(2014-12-09)
Multiphase flows in the form of gravity currents are prevalent in various natural systems, as well as in some open channels and closed conduits. Thus, accurate flow simulation and efficient modeling tools are important in ...