Civil and Environmental Engineering Commons^™

Ocena Wpływu Na Jakość Powietrza Procesu Przygotowania Obszaru Wiertni Przy Poszukiwaniach Gazu Z Łupków, Marek Bogacki, Robert Oleniacz, Monika Janicka

Robert Oleniacz

This chapter presents the model calculation results of the level of concentration of air pollutants emitted during works related to the preparation of the drilling pad for the shale gas exploration. The most significant emission sources located in the drilling pad, including rig access roads, paved and unpaved, were analyzed. The emission field was defined by the parameterization of various sources/processes, taking into account the technical, technological, organizational and environmental conditions. The calculations of the pollutants dispersion in the air were carried out using the Gaussian reference model. The results of numerical calculations showed that the only substance likely to …

Ocena Wpływu Rozdzielczości Siatki Obliczeniowej Na Wyniki Modelowania Rozprzestrzeniania Się Zanieczyszczeń W Powietrzu, Mateusz Rzeszutek, Robert Oleniacz, Marian Mazur

Robert Oleniacz

In this study are presented the results of the assessment of the impact of grid resolution on the results of computational modeling of the dispersion of air pollutants. Calculations were performed using Gaussian, non-stationary puff model CALPUFF. Four different grids resolution were analyzed. Networks were established on the basis of SRTM3 terrain and land cover classes of CLC, 2006. Analysis of results of spatial distribution of concentrations of air pollutants obtained in a regular computing grid was performed using statistical indicators recommended by the U.S. EPA. The study shows the applicability of particular computational grids in the system modeling transport …

Estimating Mineral Weathering Rates In Catskills Watersheds, Chris E. Johnson

Chris E Johnson

No abstract provided.

Construction Management Service Learning: A "How To" Process For Success, R. Casey Cline, Ken Robson, Michael Kroth

Construction Management Faculty Publications and Presentations

To ensure that students are prepared for positions in the construction industry, construction management education programs expose students to industry relevant construction management (CM) theory and practice. Traditional transmission teaching methodologies, while arguably effective for teaching management theory and practice, are not as effective for the transfer of practical leadership skills and knowledge of construction specific processes. As an alternative teaching strategy, many CM programs incorporate service-learning (S-L) into curricula; providing students practical experience, focusing on the acquisition of knowledge through goal setting, thinking, planning, experimentation, observation, and reflection.

However, from a practical standpoint, the development of a service-learning project …

Interdisciplinary, Collaborative International Service Learning: Developing Engineering Students As Global Citizens, Anthony D. Songer, Karen R. Breitkreuz

Construction Management Faculty Publications and Presentations

Recent calls to reform engineering education place emphasis on applied math and science within the broader context of globalization, economics, the environment, and society. This broad and complex challenge necessitates the investigation of new interdisciplinary education approaches for engineering education. This paper presents a formal approach for developing engineering students as global citizens. The 360 Degree Model for Educating Socially Responsible Global Citizens (360 Global Ed model) presented herein includes a framework for foundational theory, educational environment, academic coursework, and outcomes. At the core of the emerging model is an international service learning experience called the Village Network. …

Comparación Del Comportamiento Dinámico Del Edificio Parkway41 Con Y Sin Aisladores Pasivos En Bogotá Usando El Programa De Elementos Finitos Sap2000, Diego Alejandro Galindo Gómez

Ingeniería Civil

No abstract provided.

Caracterización De Las Condiciones De Movilidad En La Zona Centro De Ciudades Medias Caso Yopal, Luisa Maria Fernanda Gomez Rojas, Jhon Edison Rodriguez Martinez

Ingeniería Civil

No abstract provided.

Caracterización De Mezclas Asfálticas Fabricadas Con Agregados De Algunas Canteras De Bogotá Al Fenómeno Creep E Implementación En Un Modelo Racional De Diseño De Pavimentos, Cindy Paola Villalobos Mejía

Ingeniería Civil

No abstract provided.

Cálculo, Diseño, Construcción Y Modelación De Un Canal Multifuncional Para Uso Complementario De Las Clases Teóricas De Hidráulica De Canales Y Estructuras Hidráulicas, Juan David Calderón Gómez, Mónica Lizeth Rodríguez Bello

Ingeniería Civil

No abstract provided.

Fate Of Micropollutants During Pyrolysis Of Biosolids, John Ross

Master's Theses (2009 -)

Approximately 250 tons of organic micropollutants, including pharmaceuticals, antimicrobials, and hormones, are discharged to the environment during land application of wastewater biosolids annually. Reusing wastewater biosolids is vital to the sustainability of wastewater treatment, but current treatment processes do not remove micropollutants from biosolids in an efficient manner. Pyrolysis―the heating of biomass to temperatures between 400 and 800 °C under oxygen-free conditions―was proposed as a biosolids treatment process that could produce a beneficial soil amendment product, biochar, and remove micropollutants. The objective of this research was to determine the effect of pyrolysis temperature and residence time on the removal of …

Substation Bay Modeling And Seismic Sensitivity Study, Robert C.H. London

Civil and Environmental Engineering Master's Project Reports

The performance of high voltage electrical substations during an earthquake significantly contributes to regional resilience by providing electrical power to public entities, businesses and homes following an earthquake. Utilities try to minimize the seismic impact by qualifying individual equipment, but rarely evaluate the interconnected substation bay as a whole. In this study, three detailed numerical models were developed using the seismic qualification reports of individual electrical equipment as basis for the components within 115kV, 230kV, and 500 kV substation bay systems. The substation bays were evaluated without interconnectivity of the components and with rigid bus connectivity between components. The models …

Estimating Mineral Weathering Rates In Catskills Watersheds, Chris E. Johnson

Civil and Environmental Engineering

No abstract provided.

Implementation Of A Sediment Transport Model For Ce-Qual-W2, Rachel Hanna

Civil and Environmental Engineering Master's Project Reports

The CE-QUAL-W2 model, developed by Portland State University, simulates water quality and flow. Recommendations to expand on this model and have it include sediment transport are implemented in this report. Existing one-, two-, and three-dimensional models are reviewed and assessed for their sediment transport methodology. A laterally (width) averaged sediment concentration model is developed as an Upwind Center Space Scheme using CE-QUAL-W2 data. The scheme includes a method to calculate scour for sediment concentration and results of the model are shown for a simulated branch of the Spokane River.

The Structure-Function Relationship Of Pamam Dendrimers As Robust Oil Dispersants, Nicholas K. Geitner, Bo Wang, Rachel E. Andorfer, David A. Ladner, Pu Chen Ke, Feng Ding

Publications

PAMAM dendrimers have recently been investigated as efficient and biocompatible oil dispersants utilizing their encapsulation capacity; however, their high cationic charge density has been shown to be cytotoxic. It is therefore imperative to mitigate cationic charge-induced toxicity and understand the effects of such changes. Presented here is a synergistic experimental and computational approach to examine the effects of varying terminal surface charge on the capacity of dendrimers to disperse model liner, polycyclic aromatic, and hybrid hydrocarbons. Uncharged dendrimers collapse by forming intramolecular hydrogen bonds, which reduce the hosting capability. On the other hand, changing the surface charges from positive to …

A New Passive Surface Water Flux Meter For Simultaneous Measurement Of Contaminant And Water Fluxes In Streams And Rivers, Stephen A. Sassman

Open Access Dissertations

A passive surface water flux meter (PSFM) for measurement of contaminant concentration/flux in rivers and streams is described and tested. The novel PSFM design was developed for portability and ease of adaptability for a variety of contaminant classes. Although previous designs have been evaluated under constant flow conditions, the PSFM has never been used for measurement of pesticides or hormones and this is the first time that it has been tested under transient flow. Discharge through the PSFM is assessed by measuring miscible displacement of alcohol tracers from granular activated carbon (GAC). The tracer retardation factors (R) measured by miscible …

Impact Of Anthropogenic Activities On Hydro-Climatological Variables, Kuk Hyun Ahn

Open Access Dissertations

The natural environment has been significantly affected by anthropogenic activities. Between 1700s and 2000s, agricultural land area had quintupled and the extent of natural vegetation was globally reduced by half. Furthermore many scientists argue that the recent rise in CO2 levels in the atmosphere is mainly due to anthropogenic activities. Anthropogenic activities may also play a crucial role in the change of the hydro-climatologic variables. In this study, impact of anthropogenic activities on two representative hydro-climatologic variables, temperature and streamflow, is investigated. The variations in temperature occur over larger spatial and time scale, and hence the United States is adopted …

Integrating Pro-Environmental Behavior With Transportation Network Modeling: User And System Level Strategies, Implementation, And Evaluation, Husain M. Abdul Aziz

Open Access Dissertations

Personal transport is a leading contributor to fossil fuel consumption and greenhouse (GHG) emissions in the U.S. The U.S. Energy Information Administration (EIA) reports that light-duty vehicles (LDV) are responsible for 61\% of all transportation related energy consumption in 2012, which is equivalent to 8.4 million barrels of oil (fossil fuel) per day. The carbon content in fossil fuels is the primary source of GHG emissions that links to the challenge associated with climate change. Evidently, it is high time to develop actionable and innovative strategies to reduce fuel consumption and GHG emissions from the road transportation networks. This dissertation …

Nano-Modification For High Performance Cement Composites With Cellulose Nanocrystals And Carbon Nanotubes, Yizheng Cao

Open Access Dissertations

One of the new engineering frontiers is the exploration of infrastructure materials with novel combinations of properties that break traditional paradigms. The goal of this study is to utilize two different nano-fibers, cellulose nanocrystals (CNCs) and carbon nanotubes (CNTs) to modify the nanoscale structures of cement composites and thereby improve the performance at the macro-level. This study also evaluates the mechanism behind the modification, since fiber bridging, the most common reinforcing mechanism for fiber-reinforced composites, cannot be simply applied because CNCs are too short to bridge cracks in cement composites. ^ The mechanical tests show an increase in the flexural …

Irrigation With Treated Wastewater: Potential And Limitations, Anne Dare

Open Access Dissertations

As the world population increases and resources become more coveted, water emerges as a key component to global food security. The Middle East and North Africa (MENA) is among the driest regions in the world: containing just one percent of the world's freshwater resources. An increasing population creates greater quantities of wastewater and demands greater quantities of food, so an obvious connection arises. However logical wastewater reuse may be for bridging the irrigation supply-demand gap in this arid region, significant limitations prevent widespread adoption. The overall goal of this research is to take a holistic view of the limitations facing …

Strategies For The Replacement Of Historic Bridge Guardrails, Adam J. Clauss

Open Access Theses

Bridges that are designated historic present a special challenge to bridge engineers whenever rehabilitation work or improvements are made to the bridges. Federal and state laws protect historically significant bridges, and railings on these bridges can be subject to protection because of the role they play in aesthetics. Unfortunately, original railings on historic bridges do not typically meet current crash-test requirements and typically do not meet current standards for railing height and size of permitted openings. The objective of this study is to develop strategies that can be used to address existing railings on historic bridges and to develop solutions …