Machine automation and atmospheric monitoring are used by many industries to improve safety and productivity in the workplace. The underground Methane Watchdog System (MWS) is a multi-nodal network of sensors currently under development. The MWS aims to improve safety and produc…
"26" Result
Sort By:
We live in an era of big data, brought on by the advent of automatic large-scale data acquisition in many industries. Machine learning can be used to take advantage of large data sets, predicting otherwise unknown information from them. The Minnesota County Well Index (CWI) data…
Here we present a numerical modeling effort to estimate historical groundwater concentrations of perfluorooctanoate (PFOA), perfluorooctane sulfonate (PFOS), and perfluorohexane sulfonate (PFHxS) resulting from releases of aqueous film-forming foam (AFFF) near Colorado Springs, …
Logging has been hypothesized to have long-term effects on plant communities throughout the world. Quantifying the effects of disturbances such as logging on patterns of plant diversity and composition is a fundamental question in ecology and conservation. In this dissertation I…
Aluminosilicates are naturally occurring minerals with low thermal conductivity due to the presence of variable size pores in their structure. Because they are found in abundance in nature, they could be an economical alternative for the fabrication of thermal insulators used in…
The stability of rock slopes is crucial to public safety in highways passing through rock cuts. Slope instability and failures occur due to many factors such as adverse slop geometries, geological discontinuities, weak or weathered slope materials as well as severe weather condi…
Landslides are among the most common and damaging natural hazards on earth. Policy makers, land use planners, and community members need to know not only when and where landslides are likely to occur (hazard) but also the consequences on the human-built environment (risk). Exist…
All around the world the demand for water is increasing, especially in arid and semi-arid regions, including Iraq which subject to continuous desertification that is worsening, more importantly the Jezira region in northwestern Iraq. Thus, it’s crucial to have a better strategy …
Fractures, sinkhole, building cracks, and ground subsidence have spread in many regions of the Kingdom of Saudi Arabia, some of which are related to seismic activity, others due to the presence of unstable soils (collapsing soils and Expansive soils) and others because of faults…
The vast majority of surface structures are located on or surrounded by unsaturated and partially saturated soil deposits. Previous studies revealed that degree of saturation in soils can significantly impact the seismic performance of geotechnical systems. Yet, the fundamental …
The Zubair Formation is the most prolific reservoir in Iraq, which is comprised of sandstones interbedded with shale sequences. Due to the weak nature of the shale sequence, the instability of a wellbore is one of the most critical challenges that continuously appears during dri…
Seismic refraction is a popular method used by geological/geotechnical engineers to understand subsurface conditions. This method, along with information collected from borings, produce a realistic image of the ground beneath us. The goal of this study is to define and test a se…
Mine waste rock is often recycled for paste and cement backfill in underground cut and fill mining operations. Aggregate in concrete and road surfacing material is another use if the mine waste does not contain deleterious materials that can degrade surface and ground water qual…
The dispersion of pollutants originating from common sources in an urban environment were modeled. Modeling analyses were developed using AERMOD to evaluate PM2.5 emissions from a fireworks event, PM10 and NH3 from urban traffic infrastructure and H2S from a local water reclamat…
The current practice in wind resistant design in the United States is to proportion and detail the lateral force resisting system to remain elastic, even for extremely-rare large-magnitude windstorms. The objective of this study is to determine the applicability of inelastic des…
Sediment ejecta mechanism contributes significantly to the severity of liquefaction-induced ground failure (e.g., excessive land subsidence). Estimating the amount of ejected sediment is a key step to assess the severity of ground failure; however, procedures to quantify it are …
This thesis produced a surficial geologic map of the Charleston 7.5’ quadrangle, located in northeastern Tallahatchie County, Mississippi, at a 1:24000 scale and includes a resource assessment of the upland gravel complex, locally called the pre-loess gravel. Six surficial geolo…
Earthquake demand parameters, EDP, such as displacement, velocity and acceleration are meaningful to engineers. In general, most decision-makers are non-engineers and do not understand these parameters. This study uses a procedure stipulated in FEMA P-58 to convert the earthquak…
The National Building Code of Canada recommends that effective stress ground response analysis be performed if a liquefiable stratum is identified within a soil profile. While constitutive models for total stress ground response analysis have been well verified against earthquak…