Engineering Commons^™

Correlación Entre Los Parámetros Ambientales Convencionales Y La Presencia De Disruptores Endocrinos En El Río Bogotá A La Altura De Mosquera, Cundinamarca Según Su Incidencia En La Salud Pública De Este Municipio, Diana Paola Garzón Villarraga, Diego Andrés Guzmán Barragán

Ingeniería Ambiental y Sanitaria

El presente proyecto se realizó teniendo en cuenta que en Colombia la investigación acerca de los Disruptores Endocrinos (Sustancias que afectan el equilibrio del sistema endocrino) desde el punto de vista ambiental es casi nula, pues no se le ha dado la importancia suficiente a un tema que a mediano plazo se puede convertir en un problema de salud pública irreversible. En esta investigación se analizaron parámetros ambientales de amplia utilización como el pH, temperatura, turbiedad, oxígeno disuelto (OD), conductividad, demanda biológica de oxigeno (DBO), demanda química de oxígeno (DQO), sólidos suspendidos, grasas y aceites, sólidos sedimentables, con la presencia …

Diagnóstico Ambiental: Gestión De Aceites De Cocina Usados En La Ciudad De Bogotá, Carlos Germán Ramos Villanueva

Ingeniería Ambiental y Sanitaria

En este trabajo se analizó un diagnóstico ambiental, sobre la gestión del aceite de cocina usado en la ciudad de Bogotá, con el fin de identificar las falencias y problemas ocasionados por el aceite de cocina usado. Inicialmente se recopilo información de la manera: la gestión y el control que se está llevando en la actualidad por parte de las autoridades competentes, al aceite de cocina usado que produce tanto los grandes como los pequeños generadores, con el ánimo de conocer los actores involucrados en su gestión. Se solicitó información a las diferentes autoridades: la Secretaría Distrital de Ambiente (SDA), …

Damage Detection Through Acoustic Emission Of Fracture Processes In Concrete Masonry Units, John Alexander Cain

Masters Theses

"Masonry structures are vulnerable to earthquakes; their brittleness and discontinuous formation make them susceptible to collapse. In the event of an emergency, this could be detrimental and perhaps fatal. The area of Structural Health Monitoring (SHM) is focused on understanding the behavior of structures for the sake of safety and predicting their longevity. One applicable technique to monitor this behavior is Acoustic Emission (AE). Acoustic Emissions are transient elastic waves released as microcracks nucleate from stress intensities, coalesce into cracks and then accumulate as damage. AE monitoring is a favorable method because it is capable of detecting cracking from within …

Viabilidad En La Implementación De Un Sistema De Recirculación De Aguas Lluvia En Un Proyecto De Vis Existente En Bogotá, Erika Andrea Diaz Neira, Santiago Nicolas Monroy Suarez

Ingeniería Civil

No abstract provided.

Análisis Ambiental En La Zona De Mezcla De La Desembocadura Del Río Bogotá Al Río Magdalena, Susan Lizeth Castro Cifuentes, Jessica Paola Ortiz Lizarazo

Ingeniería Ambiental y Sanitaria

No abstract provided.

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 …

A Study Of The Huff Run Watershed, Benjamin Habig

Williams Honors College, Honors Research Projects

Acid mine drainage is the formation and movement of highly acidic water rich in heavy metals. The Huff Run watershed, located in Carrolton and Tuscarawas counties, is heavily polluted due to the several abandoned mines throughout the area. This research project serves to further a study began under the supervision of Dr. Cutright of the University of Akron. The Ohio Department of Natural Resources (ODNR) has instituted an abatement plan in Mineral City. The plan, involving a retention pond, a wetland, and a limestone bed inoculated of bacteria, has been found to reduce pollutant levels substantially. However, the limestone bed …

Automatic Turning Movements Identification System: Intersection Error Analysis, Brandon Ross Orr, Joseph Thomas Lanni

Williams Honors College, Honors Research Projects

To lessen congestion at intersections, traffic identification systems are placed at roadway intersections in order to collect vehicle data. These traffic identification systems include various types of detectors that can identify the presence of vehicles in real-time. However, these detectors can only detect their presence and not their turning movements. To fix this issue, The University of Akron has developed a program that can automatically identify vehicle turning movements and is called the Automatic Turning Movement Identification System, or ATMIS. ATMIS uses mathematical algorithms to compute the vehicle’s turning movements based on a sink and feed detector paring. During traffic …

Developing A Colorimetric Membrane Sensor To Detect Trihalomethanes In Water Samples Utilizing The Fujiwara Reaction, Max D. Duckworth

Williams Honors College, Honors Research Projects

This work focused on creating a colorimetric sensor to detect trihalomethanes (THMs) at concentrations near the level of environmental regulations from the environmental protection agency (EPA). This work utlized the fujiwara reaction as well as a hydrophobic electrospun polyprolylene membrane to produce a sensitive colorimetric reaction. A calibration curve was produced which was able to predict the concentration of a bromoroform solution in the range of 8-250 ppb with a confidence of 97.7 % using the intensity of the color change as a quantitative measure.

Adaptivity For Meshfree Point Collocation Methods In Linear Elastic Solid Mechanics, Joshua Wayne Derrick

Theses and Dissertations

This study presents the behavior of local node adaptivity for point collocation meshfree numerical methods and its application to linear elastic solid mechanics. A bisection approach to meshfree adaptivity will be presented with numerical examples showing that convergence is achieved. A threshold value is required from the user and this value is an acceptable change in gradient for the problem. If the change in gradient between 2 nodes exceed this limit, a node is added at the mid-point between the two nodes. This process applies to all nodes in the model. Once the refinement is complete, the model is processed …

Parametric Study Of Self-Centering Concentrically-Braced Frames In Response To Earthquakes, Nicholas F. Roth

Williams Honors College, Honors Research Projects

This research project consisted of the use of computer aided numerical software to test the response of an earthquake resistance system within various buildings when exposed to various design-level earthquakes. This research project is an extension of an existing NSF research project. The relevant questions and investigations of this and the greater project surround the performance of an earthquake resistance system with the intentions of better understanding its abilities and limitations. This project has been aided by Dr. David Roke, the faculty sponsor, in order to perform the research and collect, organize, and analyze the data. This research was performed …

Utilizing Ultrasonic Technology To Manage Algal Blooms In Lake Rockwell, Mackenzie Kaser, Andrew Perdue

Williams Honors College, Honors Research Projects

The purpose of this paper is to analyze the effectiveness of ultrasonic technology to manage algal blooms in Lake Rockwell. Lake Rockwell is the drinking water source for the city of Akron, OH and the surrounding areas. One of the main issues facing the City of Akron Water Treatment Plant is cyanobacteria, or blue-green algae. Cyanobacteria releases toxins, which makes conventional water treatment processes more difficult. Our proposed solution to manage algal blooms in Lake Rockwell is ultrasonic technology. This system emits vibrations that destroy the algal cells and prevent new blooms from forming. Our plan involves three master buoys …

Electrical Resistivity Of Sandy Soil With Water, Leachates And Seawater, Lopa Mudra Pandey

Theses: Doctorates and Masters

Liners are used in the engineered containment systems such as landfills for controlling the migration of contaminants. Although there are several techniques for detecting the leakages through the liners, use of the electrical resistivity method can assist in timely detection of contaminant migration in cost-effective manner. This method is based on the well-established fact that the electrical resistivity of soils and other geomaterials is much higher than the electrical resistivity of water, leachates or any liquid effluents which may permeate the landfill foundation material. Additionally, the geotechnical properties of a soil exhibit a close relationship with its electrical resistivity values …

Parameters Estimation Of Material Constitutive Models Using Optimization Algorithms, Kiswendsida Jules Kere

Williams Honors College, Honors Research Projects

Optimization Algorithms are very useful for solving engineering problems. Indeed, optimization algorithms can be used to optimize engineering designs in terms of safety and economy. Understanding the proprieties of materials in engineering designs is very important in order to make designs safe. Materials are not really perfectly homogeneous and there are heterogeneous distributions in most materials. In this paper, Self-OPTIM which is an inverse constitutive parameter identification framework will be used to identify parameters of a linear elastic material constitutive model. Data for Self-OPTIM will be obtained using ABAQUS simulation of a dog-bone uniaxial test. Optimization Algorithms will be used …

Characterisation And Applications Of Iron Ore Tailings In Building And Construction Projects, Francis Atta Kuranchie

Theses: Doctorates and Masters

The mine tailings are generated as the wastes worldwide as a result of exploration, excavation, blasting, beneficiation and extraction of mineral ores. In Western Australia, due to the extensive mining activities and increasing low grade ores, there is generation of mine tailings in large quantities, which could lead to environmental and disposal problems. The common practice of handling the tailings are to store them in tailing dams or as stockpiles near mine sites. Limited quantities are sometimes used as backfills and other applications. The utilisation of tailings in building and construction projects, which may consume a large volume of wastes, …

Engineering Characteristics Of Compacted Sand-Bentonite Mixtures, Ali Faisal Ghazi

Theses: Doctorates and Masters

Sand-clay mixtures are commonly used as a liner/barrier material in various engineering applications, such as construction of hydraulic and waste containments. Permeability, compressibility and strength are important properties of sand-clay mixtures and are often required for the design of the liner/barrier of the containments.

In states like Western Australia, which is covered mostly by sandy soils, engineers face difficulties with economically sourcing clays for liner/barrier applications. Any reliable research finding that recommends an optimum clay content to be used with sandy soil can be of significant importance. Such findings for the local Perth sandy soil are rarely available in the …

Evaluation Of Volumetric And Mechanistic Properties Of Asphaltic Mixtures: Design, Production And Construction, Samuel Booth Cooper Iii

LSU Doctoral Dissertations

There has long been an understanding that differences exist between the asphalt mixture designed in the laboratory and the asphalt mixture produced in the asphalt plant. Additionally, variations between the mixtures compacted in the laboratory and mixtures extracted from the roadway have been observed. There is concern that asphalt mixtures produced through the plant and further compacted on the roadway are not representative of asphalt mixtures designed in the laboratory. This is especially a concern when field specimens (i.e. roadway cores) are used to evaluate the quality of the asphalt mixture. For the first time, a national effort has been …

Impact Of Algae On Sugar Mill Effluents: Water Treatment And Added Value Assessment, Jacob Stephen Foy

LSU Master's Theses

Installations similar to Louisiana sugar mills have been proposed as potential biorefineries for sugarcane, energy cane, and sweet sorghum. The nutrient-rich wastewater generated from the milling process can be used as an algal growth medium. Simultaneously, algae can serve as a water treatment strategy to deplete these effluents of excess nitrogen, phosphorus, and organic carbon. In this research the effluents of a sugar mill were characterized for water quality and nutrient characteristics; the effluents were determined to be suitable for growth of a native Louisiana co-culture of microalgae and cyanobacteria (Chlorella vulgaris/Leptolyngbya sp.); growth rate, biomass productivity and nutrient uptake …

Development And Optimization Of Non-Hydrostatic Models For Water Waves And Fluid-Vegetation Interaction, Ling Zhu

LSU Doctoral Dissertations

The primary objective of this study is twofold: 1) to develop an efficient and accurate non-hydrostatic wave model for fully dispersive highly nonlinear waves, and 2) to investigate the interaction between waves and submerged flexible vegetation using a fully coupled wave-vegetation model. This research consists of three parts. Firstly, an analytical dispersion relationship is derived for waves simulated by models utilizing Keller-box scheme and central differencing for vertical discretization. The phase speed can be expressed as a rational polynomial function of the dimensionless water depth, $kh$, and the layer distribution in water column becomes an optimizable parameter in this function. …

Applications Of Geopolymer In Civil Engineering: Feasibility Study Of Loess Stabilization And Waste Concrete Recycling, Zhen Liu

LSU Doctoral Dissertations

The fast growing population and economic development have resulted in an increasing demand for residential and commercial buildings and infrastructures. However, there are problems identified to fulfill this demand, including that (1) problematic soils need to be treated/improved before the construction of building and infrastructures; (2) the Portland cement industry, which is used for concrete production and as the conventional soil stabilizer, is not environment friendly; (3) qualified natural aggregates for concrete production are being depleted; and (4) great amount of construction & demolition waste (C&D waste) is being produced every year. This means that green materials and recycling the …

Effect Of Heavy Vehicle On Conventional And Joint Work Zone Merges, James Joseph Dillard

LSU Master's Theses

Lane merges in construction work zones are guided by the Manual on Uniform Traffic Control Devices (MUTCD). The MUTCD typical lane closure guides merging vehicles from one lane into another; from the closed lane, where the construction work is taking place into the open lane. The conventional lane merge often creates conflicts for motorists because queues typically form in the open lane and aggressive drivers use this opportunity to drive in the closed lane as far as they can until forced to merge in the open lane. As a result, the conventional lane merge can create differential speeds and queue …

Evaluation Of Key Geomechanical Aspects Of Shallow And Deep Geothermal Energy, Robert Alexander Caulk

Graduate College Dissertations and Theses

Geothermal energy has become a focal point of the renewable energy revolution. Both shallow and deep types of geothermal energy have the potential to offset carbon emissions, reduce energy costs, and stimulate the economy. Before widespread geothermal exploration and exploitation can occur, both shallow and deep technologies require improvement by theoretical and experimental investigations. This thesis investigated one aspect of both shallow and deep geothermal energy technologies. First, a group of shallow geothermal energy piles was modeled numerically. The model was constructed, calibrated, and validated using available data collected from full-scale in-situ experimental energy piles. Following calibration, the model was …

Phosphate Removal And Recovery From Wastewater By Natural Materials For Ecologically Engineered Wastewater Treatment Systems, Daniel Thomas Curran

Graduate College Dissertations and Theses

Eutrophication due to excess loading of phosphorus (P) is a leading cause of water quality degradation within the United States. The aim of this study was to investigate P removal and recovery with 12 materials (four calcite varieties, wollastonite, dolomite, hydroxylapatite, eggshells, coral sands, biochar, and activated carbon. This was accomplished through a series of batch experiments with synthetic wastewater solutions ranging from 10-100 mg PO₄-P/ L. The results of this study were used to establish large-scale, calcite-based column filter experiments located in the Rubenstein School of Environment and Natural Resources' Eco-Machine. Influent and effluent wastewater samples were routinely collected …

Diseño De Estrategias Para El Tratamiento Y Disposición Final De Productos Químicos Peligrosos Generados En Establecimientos Veterinarios Y Afines En La Ciudad De Bogotá, Mónica Gizelle Calixto Sierra

Ingeniería Ambiental y Sanitaria

Inicialmente se identificaron los residuos químicos peligrosos a trabajar en el desarrollo de este proyecto a través del análisis de los productos químicos utilizados con mayor frecuencia en el cuidado y mantenimiento de animales domésticos y limpieza de los establecimientos a través de encuestas realizadas en los establecimientos veterinarios y afines; esto permitió realizar una identificación y caracterización por sus componentes Corrosivos, Reactivos, Radiactivos, Explosivos, Tóxicos, Inflamables e Infecciosos o Patógenos (CRETIP) de cada uno de estos, a través de las hojas de seguridad de los productos químicos. Con la identificación y clasificación CRETIP, se diseñan dos matrices, la primera …

Determinación De La Cl50 Para Un Vertimiento Proveniente De Una Empresa Indumotora Utilizando Organismos Del Género Daphnia, Ángela María Avendaño Andrade, Liliana Mora Araque

Ingeniería Ambiental y Sanitaria

Con esta investigación se determinó la concentración letal media de un vertimiento con contenido de detergentes proveniente de una empresa indumotora, por medio de bioensayos de toxicidad acuática realizados utilizando organismos Daphnia pulex. Se realizó el respectivo montaje para la supervivencia del cultivo, estos, se aclimataron durante 15 días y después se retuvieron en las instalaciones de los laboratorios de la Universidad de la Salle con fines de realizar las pruebas donde se obtuvo el valor de sensibilidad de los organismos para verificar la respuesta de estos al vertimiento con contenido de detergentes. La preparación de las sustancias de referencia …

Aproximación De Un Estudio Comparativo De Los Parámetros Utilizados Para La Determinación De La Tasa Retributiva Y Los Valores Reales En El Estudio De Caso (Estrato Cuatro De La Ciudad De Bogotá), Luisa Fernanda Lozano Garzón, Ginneth Marcela Peña Casallas

Ingeniería Ambiental y Sanitaria

Como respuesta a la problemática ambiental frente al aumento de vertimientos en Colombia, se llevó a la implementación de un instrumento económico llamado tasa retributiva donde su objetivo es incentivar a los agentes contaminadores a reducir el impacto de dichos vertimientos, a raíz de esto y a la importancia del recurso hídrico en cuanto a la influencia que tiene en el desarrollo económico, social y ambiental del país. Este proyecto tiene el propósito de establecer el grado de aproximación del cobro de la tasa retributiva por parte de la autoridad competente y el valor obtenido utilizando la carga real y …

Pervious Vs. Impervious Pavement: An Engineering Approach To Cost Efficiency, William Vanlandeghem

Honors Theses

This research attempts to make a comprehensive comparison between the relatively new breed of pavement, pervious concrete, and asphalt, a more popular and accepted pavement type. Pervious concrete is mainly used as a pavement surface for green purposes; however, this thesis delves into the possibility that pervious concrete may be able to offer benefits that allow the green alternative to be cost efficient as well. The comparison will be made over the entirety of the surface life including each pavement design and the materials used, the surface drainage, and the maintenance of each. The pavements were analyzed from a real …

Diagnóstico Y Análisis De Alternativas Para La Optimización Del Sistema De Acueducto De La Vereda De Chacua Del Municipio De Sibaté, Jairo Daniel Hernández Jiménez, Juan Sebastián García Pérez

Ingeniería Ambiental y Sanitaria

La vereda de Chacua se encuentra localizada en la zona rural del municipio de Sibaté, al sur de la ciudad de Bogotá y del municipio de Soacha; los servicios públicos con los cuales dispone la vereda son: electricidad y acueducto, ya que las dinámicas de desarrollo que ha sufrido la vereda, limitan la cobertura y prestación del servicio según lo establecido en la Ley 142 ; debido a su ubicación con respecto al municipio de Sibaté y a la ciudad de Bogotá, se ha observado un crecimiento poblacional significativo a lo largo de la última década en la vereda, lo …

Evaluación De La Huella Hídrica Del Cultivo Lirio Japonés Hemerocallis En La Vereda Ricaurte Del Municipio De Rondón, Boyacá, Yuri Stephani Vanegas Rojas, Lorena Margoth Vera Ramírez

Ingeniería Ambiental y Sanitaria

Colombia es uno de los países que posee una gran riqueza en biodiversidad y fuentes hídricas, siendo uno de los 10 países con mayor disponibilidad de este recurso en el mundo. Los seres humanos gastamos a diario agua para ducharnos, preparar alimentos, lavar los platos o la ropa, o simplemente para beberla directamente, pero también debemos saber que gastamos gran cantidad de agua en todo lo que consumimos (bienes, productos, servicios), ya que en su producción la requieren. La huella hídrica es utilizada como un indicador del uso de agua de los consumidores tanto domésticos como industriales, de forma directa …

A Unified Swcc-Clay Mineralogy Based Framework For Predicting Swell Behavior Of Expansive Soils, Alejandro Hernan Pino Bravo

Civil Engineering Dissertations

Expansive soils are spread over different climatic zones around the world with varying mineralogical content and microstructure, making the soil to absorb moisture between their mineral layers and therefore undergo volume changes. This behavior generates swell and shrinkage surface movements which affect the integrity of infrastructure built on them. A practice currently employed correlates swell-shrink behavior to soil index parameters, however, variable soil mineralogy limits this approach, which generates poor soil swell characterization. Thus, characterizing efforts must be emphasized on identification of real parameters governing the swell/shrink behavior, such as mineralogy, variation of suction with moisture content and pore distribution. …