Civil and Environmental Engineering Commons^™

Application Of Hydrodynamic Models In Simulating The Thermal Regime Of Lake Superior, Rasika K. Gawde

Dissertations, Master's Theses and Master's Reports - Open

In large systems, such as the Great Lakes and coastal oceans, physical processes have a significant influence on chemical and biological phenomena. Hydrodynamic modeling assists in describing these physical characteristics and in recent years, these models have been extensively applied in the Great Lakes basin to study the response of the lake ecosystem to long-term meteorological forcing conditions.

Due to its role in mediating physical, biological and chemical processes in lake environments, water temperature (and the attendant thermal regime) has been the parameter of interest in many of these mathematical modeling studies and was adopted as the primary metric for …

Lighting Design In Europe: Aligning The Demands For Lower Energy Usage With Better Quality., Kevin Kelly, James Duff

Articles

Lighting design is one of the fastest changing areas in building engineering. It has evolved significantly in recent years due to changing technology and demands for improved quality, better control, reduced energy and sustainability. This paper is an overview of what is happening in Europe and elsewhere and examines the literature to find that latest recommendations in the Code for Lighting issued by the SLL (Society of Light and Lighting) in the UK change previous demands for equal illuminance across a working plane to more specific and demanding criteria. There are recommendations for qualitative metrics and better distribution of light …

Comparison Of Bicycle Transportation Systems In El Paso And Prague, Jose C Hernandez

Open Access Theses & Dissertations

Bicycle transportation infrastructure has an important role in bicycle transportation mode. Every year there are hundreds of accidents where bicyclist are involve, because there is not a good infrastructure for bicycles in the roads bicyclists have a potential risk. One of the main purposes is maintain the bicyclistsâ?? safety in the roads to attract more people to use this eco-friendly transportation mode. The goal of this Thesis is compare the bicycle infrastructure in two different countries, United States and Czech Republic. The history and the main terminology are described in firsts chapters. Based on law and regulations, design criteria and …

Alternative Fatigue Cracking Resistance Assessment Criteria Of Asphalt Mixtures With Overlay Tester, Alejandro Miramontes

Open Access Theses & Dissertations

The accumulation of damage due to cracking of hot mix asphalt (HMA) layers under repeated loading along with the climatic effects is known as fatigue cracking. The Overlay Tester (OT) has been implemented or considered by several highway agencies as an index to evaluate the cracking susceptibility and resistance to cracking of asphalt mixtures in the laboratory. The performance indicator used to measure the quality of the HMA mixes is the number of cycles that a specimen may resist during the test until the crack appears and fully propagates to the top of the specimen. The repeatability of the number …

Simulating Energy Efficient Control Of Multiple-Compressor Compressed Air Systems, Sean Murphy, J. Kelly Kissock

Mechanical and Aerospace Engineering Faculty Publications

In many industrial facilities it is common for more than one air compressor to be operating simultaneously to meet the compressed air demand. The individual compressor set-points and how these compressors interact and respond to the facility demand have a significant impact on the compressed air system total power consumption and efficiency. In the past, compressors were staged by cascading the pressure band of each compressor in the system. Modern automatic sequencers now allow more intelligent and efficient staging of air compressors.

AirSim, a compressed air simulation tool, is now able to simulate multiple-compressor systems with pressure band and automatic …

Experimental Study Of Longitudinal Sorting Of Particles Differing In Size And Density, Nabila Mahjabeen

Theses and Dissertations

Transport, deposition and erosion of sediment particles differing in size, shape and density may result in particle segregation, which in geosciences applications is generally referred to as sediment sorting. A thorough understanding of sediment sorting processes is important to describe and model a wide variety of natural processes such as the decrease in particle size and/or density in a fluvial system (downstream fining and/or lightening), the formation of economic placers, concentration of heavy minerals, chemical and metal pollutants etc. Sorting of sediment grains associated with sediment transport in the streamwise direction results in the development of longitudinal sorting patterns. Vertical …

Climate Change Implications For Health-Care Waste Incineration Trends During Emergency Situations, Emilia Mmbando Raila

Walden Dissertations and Doctoral Studies

Healthcare waste (HCW) incineration practices in the global South countries are among the major sources of black carbon (BC) emissions or smoke. This study analyzes HCW incineration trends during emergency situations and smoke from HCW incineration processes in Haiti. The study was prompted by the current arguments about the climate change and the growing health effects associated with BC emissions. The conceptual framework was based on both adverse health effects from BC emissions exposure and climate change potential of BC emissions. Therefore, the goal was to determine whether cardboard HCW sharps containers emit lower BC emissions to the atmosphere during …

Propuesta De Gestión Ambiental Para Minimizar Los Elementos Que Afectan Visualmente El Centro Histórico Del Municipio De Zipaquirá Cundinamarca, Ángela Catalina Arias Aguilera, Liliana Andrea González Rico

Ingeniería Ambiental y Sanitaria

En la actualidad el desarrollo económico, político y cultural ha producido un gran impacto a escala social desencadenando efectos positivos y negativos. Dentro de esta investigación se ha tomado un espacio geográfico de gran interés en Colombia; se del municipio de Zipaquirá ubicado en el departamento de Cundinamarca, zona que alberga diversos puntos de atracción turística, cultural e histórica, como lo es la Catedral de Sal y el Centro Histórico, los cuales constituyen un gran atractivo para todos sus habitantes y visitantes , sin embargo y debido a ese desarrollo económico, político y cultural han surgido elementos que afectan visualmente …

Determinación De Factores De Emisión Para Pm10 Proveniente De Construcción De Vías, Edificaciones Y Canteras En Bogotá, Katherin Amparo Orozco Jiménez, Andrea Marcela Huelvas Téllez

Ingeniería Ambiental y Sanitaria

La contaminación atmosférica es hoy uno de los principales problemas ambientales de la ciudad de Bogotá, fenómeno que se ha agravado debido al rápido crecimiento socioeconómico de la ciudad. De ahí, la importancia de generar herramientas para la toma de decisiones que ayuden a mejorar la calidad del aire y por ende, la calidad de vida de los habitantes. Una de estas herramientas es el desarrollo de inventarios de emisiones. Hasta el momento se han inventariado emisiones provenientes de procesos de combustión en fuentes fijas y móviles en Bogotá, pero no se han tenido en cuenta emisiones de polvo fugitivo …

Planteamiento De Acciones De Restauración Para Ecosistemas Afectados Por La Ocurrencia De Incendios Forestales, Tomando Como Área Piloto Los Municipios De Guachetá, Machetá Y Ricaurte – Cundinamarca, María Del Mar Sarmiento Daza

Ingeniería Ambiental y Sanitaria

No abstract provided.

Establecer La Concentración De Inhibición Media (Ce 50-120) De Los Lodos De Lixiviado Del Relleno Sanitario Doña Juana, Tratados Por Un Reactor Piloto (Sbr), Mediante Bioensayos De Toxicidad Sobre Semillas De Lactuca Sativa L, Lina Fernanda Vargas Rodríguez, Angie Katherine Carrillo Jamaica

Ingeniería Ambiental y Sanitaria

En la presente investigación se tuvo como propósito específico, llevar a cabo bioensayos con semillas de Lactuca sativa l, para la determinación de la concentración de inhibición media (CE50), de los lodos de lixiviado procedentes de los residuos sólidos dispuestos en el relleno sanitario Doña Juana mediante ensayos de toxicidad. El muestreo de estos lodos estuvo a cargo de personal calificado y fue realizado directamente en la planta de tratamiento ubicada en el relleno para posteriormente ser tratados por medio de un bioreactor piloto en una investigación llevada a cabo en la Universidad Militar Nueva Granada, por lo tanto la …

Formulación De Alternativas De Gestión De Residuos Cortopunzantes Potencialmente Infecciosos A Nivel Domiciliar, René Ricardo Cuéllar Rodríguez, Laura Lizeth Madero Gutiérrez

Ingeniería Ambiental y Sanitaria

La problemática del incorrecto manejo de los residuos cortopunzantes potencialmente infecciosos a nivel domiciliar (RCPID) ha trascendido el ámbito ambiental y sanitario debido a los riesgos ambientales derivados de los métodos empleados para su tratamiento, disposición final, a la generación y propagación potencial de enfermedades infecciosas al ser humano. Estos residuos pueden ser generados en Instituciones Prestadoras de Servicios de Salud (IPS), centros de estética y en los hogares principalmente. En ese sentido, el principal objetivo de esta investigación es formular alternativas de gestión de residuos cortopunzantes potencialmente infecciosos a nivel domiciliar (RCPID) por medio de la evaluación técnico ambiental …

Evaluación Del Impacto En Calidad Del Aire, Asociado A Resuspensión De Material Particulado Por La Pavimentación De La Vía Principal De Caracolí - Ciudad Bolívar, Bogotá D.C, Laura Catalina Pinto Herrera, Juan Felipe Méndez Espinosa

Ingeniería Ambiental y Sanitaria

En Bogotá D.C., la Unidad de Planeación Zonal Ismael Perdomo (UPZ- N°69), en la que se encuentra el Barrio Caracoli (zona estrato uno), es catalogada según Decreto 623 de 2011, como área-fuente de contaminación Clase I por PM10 (SDA, 2012), por lo que se hace imperativo según Resolucion 601/2006 (Art 9.), la ejecución de programas que contribuyan a la reducción y control de la resuspensión de material particulado, acciones encaminadas a pavimentación de calles, asi como la implementación de criterios ambientales por parte de entidades públicas como la Unidad Administrativa Especial de Rehabilitación y Mantenimiento Vial (UAERMV), el Instituto de …

Comparison Of Lock-In And Pulse-Phase Thermography For Defect Characterization In Frp Composites Applied To Concrete, Jeff Brown, Sai Harsha Chittineni

Publications

Thermal imaging is a well-established technique for the non-destructive evaluation of FRP composites applied to reinforced concrete. Defect characterization using IR thermography, however, remains a topic of on-going research, and there are currently no universally accepted standards for data collection or interpretation. This research involved large scale thermography inspection of two FRP strengthened bridge girders that were removed from service after approximately 10 years of service in a potentially corrosive marine environment. Trial inspections were performed on test areas where defects could be identified using sounding methods. Two procedures showed the most promise for identifying and characterizing defects: sinusoidal (lock-in …

Hybrid Jacketing For Rapid Repair Of Seismically Damaged Reinforced Concrete Columns, Mostafa Fakharifar, Genda Chen, Mahdi Arezoumandi, Mohamed Elgawady

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This study proposes hybrid jacketing for rapid repair of seismically damaged concrete columns for bridge safety. The hybrid jacketing for a reinforced concrete (RC) column is composed of a thin cold-formed steel sheet wrapped around the column and its outside prestressing strands. Although the prestressing strands can prevent buckling of the confining steel sheet, the steel sheet can in turn prevent the prestressing strands from cutting into the concrete. The hybrid jacketing concept was validated with testing of a large-scale RC column with lap splice deficiency typical of pre-1970 bridge constructions in the Central United States. Results from the original …

Effects Of Light Quality And Light Quantity On The Growth Kinetics Of A Louisiana Native Microalgal/Cyanobacterial Co-Culture, Jonathan Zell Barnett

LSU Master's Theses

One of the most important factors controlling the growth of microalgae is light. Light quality and light quantity have a dramatic effect on the production of biomass, lipids and pigments of microalgae. In this research, a native Louisiana co-culture containing Chlorella vulgaris (microalgae) and Leptolyngbya sp (cyanobacteria) was studied to determine the effects of various wavelength distributions and irradiance levels on growth kinetics. Growth rates, biomass levels, lipid contents and chlorophyll-a production was examined in batch cultures to determine which color light was optimum for cultivation. At 80 µmol/m^2-sec the species shifted from microalgae dominant to cyanobacteria dominant. The impact …

Laboratory Evaluation Of Organic Soil Mixing, Spencer Dean Baker

USF Tampa Graduate Theses and Dissertations

Organic soils present a difficult challenge for roadway designers and construction due to the high compressibility of the soil structure, the often associated high water table, and the high moisture content. For other soft or loose soils (inorganic soils), stabilization via cement or similar binders (a method called soil mixing) has proven to be an effective solution. To this end, the Federal Highway Administration has published a comprehensive design manual for these techniques. Organic soils, however, are not addressed therein to a level of confidence for design, as organic soils do not follow the trends of inorganic soils. This has …

Direct Membrane Filtration Of Domestic Wastewater: Implications For Coupling With Anaerobic Membrane Bioreactor (Df-Anmbr) For Wastewater Resource Recovery, George H. Dick

USF Tampa Graduate Theses and Dissertations

With the growing use of membranes in the water industry, different methods for using membranes to treat water is still occurring. Enhancing membrane performance is generally performed with extensive pretreatment methods before the feedwater is filtered by the membrane. With the utilization of direct membrane filtration (DF), no pretreatment is performed and the membrane is exposed to raw wastewater. While this may suggest that membrane performance and permeate quality would suffer in the process, DF testing with a 0.03 µm ultrafiltration PVDF membrane showed that relatively high membrane flux was sustained while producing a high quality effluent. Due to the …

A Framework For Determining Building Water Cycle Resilience Using A Dynamic Water Resilience Assessment Model (Wram), Caryssa Joustra

USF Tampa Graduate Theses and Dissertations

The aim of this project was to quantitatively measure the resilience of the building water cycle. In order to accomplish this goal, a framework was developed that outlines how building water resilience can be evaluated. The framework presented assumed that resilience describes the fulfillment of system functions; in this case, the system functions considered are those actualized by the building water system. A building water resilience assessment model (WRAM) was developed with the ability to simulate different building water cycles and resilience scenarios. Resilience is dependent on the type and magnitude of a disturbance. Therefore, unique disruption scenarios were developed …

Using Simulated Virtual Interactivity In Construction Education, Saeed Rokooei, James D. Goedert

Department of Construction Engineering and Management: Faculty Publications

This paper briefly illustrates the design procedure, implementation and findings of a three year research project. Virtual Interactive Construction Education (VICE) is a project-based pedagogical model that uses a simulated environment to alter traditional subject-based lectures into virtual project-based interactive learning methods in construction education. For this purpose, the context of construction engineering and management curricula were aggregated into six construction project prototypes. VICE-Bridge is the first of these six prototypes that exposes players to experiential problem solving activities toward achieving a goal situation (construct the bridge) from an initial situation (start of construction). It was designed for students with …