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Now showing items 231-240 of 398
Removal of RDX and HMX from an artificial groundwater by granular activated carbon
(Texas A&M University, 1999)
Granular activated carbon (GAC) adsorption was efficient at removing high explosive contaminants such as Hexahydro-1,3,5-trinitro-1,3,5-tririne (RDX) and Octahydro-1,3,5,7-tetrritro-1,3,5,7-tetruocine (HMX) from an artificial ...
A leach model for solidified/stabilized waste forms based on empirical partitioning of contaminants
(Texas A&M University, 1997)
An Empirical Partitioning Leach Model (EPLEM), has been developed to describe the leaching of metal contaminants from solidified wastes. The model considers interactions between two components such as hydrogen ion and a ...
Evaluation of alignment indices in estimating tangent speeds on rural two-lane highways
(Texas A&M University, 1997)
The design-speed concept has been used in attempting to ensure design and operating-speed consistency of roads in the United States, However, this concept has no effective controls on maximum speeds (e.g., tangents), which ...
Comparison of operating speeds at spiral transition and circular curves
(Texas A&M University, 1998)
Although the design policies of many countries encourage the use of spiral transition curves, questions still exist as to whether spiral transition curves have any benefit in roadway design. The findings of previous research ...
Assessment of TexSIM capabilities for analyzing freeway ramp metering
(Texas A&M University, 1997)
As traffic volumes continue to increase in urban and suburban areas and there is less space to increase freeway capacity by means of lane additions, freeway traffic operations must be improved using other means by adopting ...
Toxicity of oiled wetland sediments influenced by natural and enhanced bioremediation
(Texas A&M University, 1998)
A multi-phase bioremediation project was initiated raphics. following the rupture of several oil and gas pipelines during extensive flooding of the San Jacinto River near Houston, Texas, in October of 1994. A small cove ...
Comparasion of finite difference and finite element hydrodynamic models applied to the Laguna Madre Estuary, Texas
(Texas A&M University, 1996)
The U.S. Geological Survey Surface Water Flow and Transport Model in Two-Dimensions (SV*9FT2D) model was applied to the northern half of the Laguna Madre Estuary. SW=D is a two dimensional hydrodynamic and transport model ...
Effect of progression on capacity of interchange ramp weaving
(Texas A&M University, 1996)
Several traffic operational problems are routinely being experienced at one of the most critical elements in the highway system, i.e., grade-separated interchanges. A concern among many practicing engineers is arterial ...
Predicting violations at gated active highway-railroad grade crossings
(Texas A&M University, 1997)
Motorists deciding to drive around lowered gates at gated active highway-railroad grade crossings are likely one of the main contributors to many of the accidents that occur at these crossings. The objective of this study ...
Analysis of trip item non-response bias in the Houston-Galveston area council household travel surveys
(Texas A&M University, 1997)
Information obtained through the collection and analysis of origin-destination travel surveys is used to develop trip rate information for input to travel demand models. Three major sources of systematic error can exist ...