Obliczenia Rozprzestrzeniania Się Pyłu Drobnego W Powietrzu Atmosferycznym Z Wykorzystaniem Dyfuzyjnych Modeli Gaussa, 2015 AGH University o Science and Technology
Obliczenia Rozprzestrzeniania Się Pyłu Drobnego W Powietrzu Atmosferycznym Z Wykorzystaniem Dyfuzyjnych Modeli Gaussa, Robert Oleniacz, Mateusz Rzeszutek
Robert Oleniacz
The chapter presents a comparison of results of modelling concentrations of fine dust (suspended dust PM10) in the air with the use of two diffusion models: the Gaussian plume model (used commonly in Poland), and the Gaussian puff model CALPUFF (used significantly less frequently). It indicates discrepancies in obtained results of calculations for point emitters taking into consideration three dimensional options (with the following heights: 20, 40 and 60 m and diameters of respectively: 1.0, 1.5 and 2.0 m). For particular variants, errors were visualised, resulting from use of the simple Gaussian plume model in place of the advanced CALPUFF …
Performance Comparison Of A Roundabout Versus Two-Way Stop Controlled (Twsc) Intersections, 2015 University of Dayton
Performance Comparison Of A Roundabout Versus Two-Way Stop Controlled (Twsc) Intersections, Deogratias Eustace
Deogratias Eustace
The superior safety record of modern roundabouts is well known in Western Europe, Australia and in most British-influenced countries around the world. The experience from a single modern roundabout installed in the City of Manhattan, Kansas, some three years ago, also shares the same experience. A major study of the performance of Manhattan, Kansas, modern roundabout was conducted at Kansas State University (KSU) and was co-sponsored by Mac-Blackwell National Rural Transportation Study Center, Kansas State University, and the City of Manhattan. The study examined three intersections, one modern roundabout and two Two-Way Stop Controlled (TWSC) intersections with similar traffic conditions. …
A Simplified Method For Analyzing Factors Contributing To Motorcyclists’ Fatal Injuries In Ohio, 2015 University of Dayton
A Simplified Method For Analyzing Factors Contributing To Motorcyclists’ Fatal Injuries In Ohio, Deogratias Eustace, Vamsi Krishna Indupuru
Deogratias Eustace
The aim of this paper was to analyze traffic crash data by using a simplified method in determining significant factors that increase the risk of a motorcyclist being fatally injured once involved in a motorcycle crash in Ohio. The concept of overrepresentation, which is similar to relative risk, was used in identifying significant variables associated with the elevated risk of a motorcycle crash resulting into a fatality. The overrepresentation factor (ORF) was calculated for each variable of interest. The ORF offers a simple but powerful procedure of determining whether a certain factor significantly occurs more or less frequently in one …
Using A High Altitude Balloon Platform To Observe And Measure Seasonal Ozone Flux Over Agricultural Landscapes, 2015 DePaul University
Using A High Altitude Balloon Platform To Observe And Measure Seasonal Ozone Flux Over Agricultural Landscapes, Cody Sabo
2017 Academic High Altitude Conference
The concentration of greenhouse gasses (GHGs) in the atmosphere has continued to rise since the industrial era. This issue has had a multitude of negative impacts on all living things. Among the major GHGs are carbon dioxide, methane, nitrous oxide, and ozone. Ozone is of particular importance because it not only has the ability to trap heat in the atmosphere, but it also directly impacts organisms by causing harm to both plants and humans. The damage that ozone causes to plants is most closely linked to ozone uptake rather than ozone concentration. So, measuring ozone uptake is becoming critical for …
A System Dynamics Approach To The Efficacy Of Oxime Therapy In Sub Lethal Exposure To Sarin Gas, 2015 Air Force Institute of Technology
A System Dynamics Approach To The Efficacy Of Oxime Therapy In Sub Lethal Exposure To Sarin Gas, Daniel J. Droste
Theses and Dissertations
The 2010 National Security Strategy states, The effective dissemination of a lethal agent would endanger the lives of thousands of people and have unprecedented economic, societal, and political consequences. We must continue to work at home with first responders and health officials to reduce the risk associated with high-consequence threats . Nerve agents, such as Sarin gas, are considered high consequence threats. The threat of use of agents such as Sarin is as much a threat today as any other time in our history. However, the suggested treatment protocol is not as precise as it could be. Debate exists over …
Investigations And Management Of Epizootic Plague At Ice House Reservoir, Eldorado National Forest, California, 1994 And 1995, 2015 California Department of Health Services
Investigations And Management Of Epizootic Plague At Ice House Reservoir, Eldorado National Forest, California, 1994 And 1995, Kenneth R. Townzen, Malcolm A. Thompson, Charles R. Smith
Charles Kay Smith
The occurrence of plague (Yersinia pestic) at Ice House Reservoir in 1994 and 1995 was characteristic of widespread epizootics in high use recreational areas of California. Staff of the Vector-Borne Disease Section investigated these epizootics and found dense populations of plague susceptible California ground squirrels (Spermophilus beecheyi) with high numbers of fleas, primarily Diamanus montanus, the most important plague vector. This combination indicated a high risk of plague exposure to campground users. A non-fatal human case of plague, contracted at Mountain Camp II, was reported after the initial epizootic investigation. The patient's exposure occurred prior to the reporting of the …
Direct Atmospheric Evidence For The Irreversible Formation Of Aqueous Secondary Organic Aerosol, 2015 University of Maryland at Baltimore
Direct Atmospheric Evidence For The Irreversible Formation Of Aqueous Secondary Organic Aerosol, Marwa M. El-Sayed, Yingqing Wang, Christopher J. Hennigan
Publications
The reversible nature of aqueous secondary organic aerosol (aqSOA) formation was characterized for the first time through direct atmospheric measurements. Water-soluble organic carbon in the gas and particle phases (WSOCg and WSOCp) was measured simultaneously to quantify aqSOA formation in Baltimore, Maryland. During the nighttime, aqSOA formation was evident as WSOCg increasingly partitioned to the particle phase with increasing relative humidity (RH). To characterize the reversible/irreversible nature of this aqSOA, the WSOCp measurement was alternated through an unperturbed ambient channel and through a “dried” channel maintained at ~40% RH (with 7 s residence time) to mimic the natural drying particles …
Effects Of Sulfidation And Natural Organic Matter On The Deposition Of Silver Nanoparticles, 2015 University of Massachusetts Amherst
Effects Of Sulfidation And Natural Organic Matter On The Deposition Of Silver Nanoparticles, Yunqui Chen
Environmental & Water Resources Engineering Masters Projects
Environmental transformation through sulfidation and complexation with natural organic matter (NOM) are two major factors that may affect the fate and transport of silver nanoparticles (AgNPs) in the aquatic systems by changing their dissolution, deposition, and surface properties. To understand the impact of sulfidation and NOM on the aggregation and deposition of AgNPs, a combination of dynamic light scattering and quartz crystal microgravimetry with dissipation monitoring was used. Polyvinylpyrrolidone (PVP)-capped AgNPs that were modified through sulfidation and/or complexed with NOM had a greater extent of deposition than unmodified PVP-AgNPs. Specifically, the deposition extent of sulfidized AgNPs in the presence of …
Using Swat To Simulate Crop Yields And Salinity Levels In The North Fork River Basin, Usa, 2015 Oklahoma State University
Using Swat To Simulate Crop Yields And Salinity Levels In The North Fork River Basin, Usa, Aaron R. Mittelstet, Daniel E. Storm, Art L. Stoecker
Biological Systems Engineering: Papers and Publications
Crop yields and salinity levels in the North Fork of the Red River (North Fork River) basin, located in southwestern Oklahoma and the Texas Panhandle, were analyzed based on the diverse climate in the region. Saline irrigation water is a major problem in the basin. The Elm Fork Creek flows through salt deposits, making the creek and its receiving stream, the North Fork River, too saline to use for irrigation. This greatly reduces the number of hectares that can be utilized for agricultural crops within the basin. A baseline SWAT model was setup, calibrated and validated to simulate streamflow and …
Water And Energy Use And Wastewater Production In A Beef Packing Plant, 2015 University of Nebraska-Lincoln
Water And Energy Use And Wastewater Production In A Beef Packing Plant, Rami Ziara
Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research
Accurate information about water and energy use and wastewater production in beef packing plants is scarce. The objective of this study was to collect baseline water and energy use data within a beef packing plant with a special focus on antimicrobial interventions and to collect preliminary wastewater production data in addition. Permanent and portable water flow meters were installed on the plant’s plumbing system to collect water flow data from March 2014 to March 2015. A local utility company was hired to meter electricity at antimicrobial interventions using portable data loggers. Metered water flows and temperatures were combined with fundamental …
Nutrient Transformations In Algae Raceway Ponds Fed Municipal Wastewater, 2015 California Polytechnic State University, San Luis Obispo
Nutrient Transformations In Algae Raceway Ponds Fed Municipal Wastewater, Carter Michael Reiff
Master's Theses
While treating domestic wastewater, algae can be grown and harvested for biofuel production. Water is a vital resource and it is imperative to conserve and reuse as much as possible. Several pilot and lab scale experiments were conducted to further research into a full scale wastewater treatment and biofuel production facility. This thesis will include these topics: nitrogen and phosphorus concentrations of clarified wastewater pond feed, nitrogen and phosphorus transformations by algae, and the potential of algae cell disruption technologies to increase nutrient solubilization.
The pilot scale experiments were conducted using nine 33 m2, 0.3 m deep multi-culture …
Sustainable Treatment Of Landfill Leachate, 2015 Universiti Sains Malaysia
Sustainable Treatment Of Landfill Leachate, Mohamad Anuar Kamaruddin, Mohd. Suffian Yusoff, Hamidi Abdul Aziz, Yung-Tse Hung
Civil and Environmental Engineering Faculty Publications
Landfill leachate is a complex liquid that contains excessive concentrations of biodegradable and non-biodegradable products including organic matter, phenols, ammonia nitrogen, phosphate, heavy metals, and sulfide. If not properly treated and safely disposed, landfill leachate could be an impending source to surface and ground water contamination as it may percolate throughout soils and subsoils, causing adverse impacts to receiving waters. Lately, various types of treatment methods have been proposed to alleviate the risks of untreated leachate. However, some of the available techniques remain complicated, expensive and generally require definite adaptation during process. In this article, a review of literature reported …
Locating Optimal Water Quality Monitoring Locations Using Demand Coverage Index Method, 2015 California Polytechnic State University, San Luis Obispo
Locating Optimal Water Quality Monitoring Locations Using Demand Coverage Index Method, Jeffrey Scott Brake
Master's Theses
Water quality regulations are always expanding especially in the field of water quality monitoring; however, threats to our water distribution systems still remain. Components of water distribution systems are susceptible to intentional and accidental contamination; therefore, they represent highly vulnerable aspects of our vital infrastructure.
An analysis was performed on a city in California with a population of 30,000 to 40,000 residents. The analysis is performed to determine the optimal locations of monitoring stations throughout the water distribution system. The method presented by Liu and colleagues (Liu et al, 2012) selects the optimal monitoring locations for the virtual California city …
Criticality And Risk Assessment For Pipe Rehabilitation In The City Of Santa Barbara Sewer System, 2015 California Polytechnic State University, San Luis Obispo
Criticality And Risk Assessment For Pipe Rehabilitation In The City Of Santa Barbara Sewer System, Rossi Carmelo Rossi Ii
Master's Theses
Aging sewer infrastructure is posing greater and greater risk to the health and well-being of City residents. Issues can range from pipe blockages in sewer laterals to Sanitary Sewer Overflows. This thesis develops a risk analysis method that can be used by municipalities to maintain and rehabilitate sewer assets. Risk combines the effect of Likelihood of Failure (LOF) and Consequence of Failure (COF) to perform a complete two-dimensional analysis that allows for relative comparison between different pipes in the system. The LOF rating has been equated to pipe integrity while the COF rating was related to the environmental, economic, and …
Treatment Of Petroleum Hydrocarbons In Oil-Based Drill Cutting Mud Using Biowish Bioaugmentation Products, 2015 California Polytechnic State University, San Luis Obispo
Treatment Of Petroleum Hydrocarbons In Oil-Based Drill Cutting Mud Using Biowish Bioaugmentation Products, Diego Jose Cardenas Zepeda
Master's Theses
The efficacy of BiOWiSHTM-Thai Aqua, a commercially discontinued microbial product, in remediating oil based drill-cutting mud (DCM) was researched in this study. Experimentation was performed directly on DCM and on sand contaminated with oil extracted from DCM. A gas chromatograph-mass spectrometrer and a respirometer were used for analysis of total petroleum hydrocarbons (TPH) and CO2 production respectively. Five experiments were analyzed by TPH extraction and analysis; four experiments were analyzed by respirometric analysis. The specific microcosm conditions tested in the experiments were control, nutrient-only control, and bioaugmentation product.
This study concluded that there might be potential for bioaugmentation of TPH …
Clarification Of Recreational Pool Water Using Biological Additives Produced By Biowish(Tm), 2015 California Polytechnic State University, San Luis Obispo
Clarification Of Recreational Pool Water Using Biological Additives Produced By Biowish(Tm), Reese Nathaniel Wilson
Master's Theses
Effects of commercially available bacterial products were investigated on two common recreational pool contaminants: sunscreen and cyanuric acid (CYA). Microbial products developed by BiOWiSH Technologies, Inc. were tested for enhancing mechanical filtration and water clarification in bench-scale bioreactors, with conditions mimicking those of recreational pool water. Bacterial consortia included proprietary mixes of Bacillus, Lactobacillus and Pseudomonas, and other genera of bacteria. BiOWiSH products are either fermented on a solid substrate consisting of rice bran and soy meal, or they are mixed with a soluble diluent. Twenty-nine BiOWiSH products were tested throughout forty experiments.
Experiments were carried out to determine both …
On The Assessment Of Reliability In Probabilistic Hydrometeorological Event Forecasting, 2015 Portland State University
On The Assessment Of Reliability In Probabilistic Hydrometeorological Event Forecasting, Caleb Matthew Dechant, Hamid Moradkhani
Civil and Environmental Engineering Faculty Publications and Presentations
Probabilistic forecasts are commonly used to communicate uncertainty in the occurrence of hydrometeorological events. Although probabilistic forecasting is common, conventional methods for assessing the reliability of these forecasts are approximate. Among the most common methods for assessing reliability, the decomposed Brier Score and Reliability Diagram treat an observed string of events as samples from multiple Binomial distributions, but this is an approximation of the forecast reliability, leading to unnecessary loss of information. This article suggests testing the hypothesis of reliability via the Poisson-Binomial distribution, which is a generalized solution to the Binomial distribution, providing a more accurate model of the …
Constructed Treatment Wetland In Rose-Hulman Greenhouse, 2015 Rose-Hulman Institute of Technology
Constructed Treatment Wetland In Rose-Hulman Greenhouse, Ila Creekbaum
Rose-Hulman Undergraduate Research Publications
As more impervious materials and buildings takeover natural environments, creeks and rivers become more polluted. When it rains the water collects pollutants because the water flows over parking lots, buildings, and agricultural land. The water can collect oil, nitrogen, phosphorus, and small particles. These pollutants decrease the water quality in surrounding water bodies. Natural wetlands are excellent at removing pollutants from the water that flows through the filter media and are relatively inexpensive. Our objective this summer was to replicate the biological processes by constructing a treatment wetland in the greenhouse on the Rose-Hulman campus. Then we would test the …
Climate Change Assessment In Columbia River Basin (Crb) Using Copula Based On Coupling Of Temperature And Precipitation, 2015 Portland State University
Climate Change Assessment In Columbia River Basin (Crb) Using Copula Based On Coupling Of Temperature And Precipitation, Yueyue Qin
Dissertations and Theses
The multi downscaled-scenario products allow us to better assess the uncertainty of the variations of precipitation and temperature in the current and future periods. Joint Probability distribution functions (PDFs), of both the climatic variables, might help better understand the interdependence of the two, and thus in-turn help in accessing the future with confidence. In the present study, we have used multi-modelled statistically downscaled ensemble of precipitation and temperature variables. The dataset used is multi-model ensemble of 10 Global Climate Models (GCMs) downscaled product from CMIP5 daily dataset, using the Bias Correction and Spatial Downscaling (BCSD) technique, generated at Portland State …
Wpływ Instalacji Termicznego Przekształcania Odpadów Komunalnych Na Jakość Powietrza, 2015 AGH University o Science and Technology
Wpływ Instalacji Termicznego Przekształcania Odpadów Komunalnych Na Jakość Powietrza, Robert Oleniacz
Robert Oleniacz
At the turn of 2015/2016 it is planned to launch in Poland a few new municipal solid waste incineration plants. This type activities causes usually concerns of the local community due to their potential negative impact on air quality. Are these fears are, however, justified? The article describes allowable air emissions for new waste incinerators, the actual emissions that occur from such installations, and the current state of knowledge about their impact on air pollution.English title: The impact of installations of municipal solid waste thermal treatment on air quality.