The Hydraulic Conductivity Structure Of Gravel-Dominated
Vadose Zones Within Alluvial Floodplains,
2014
Oklahoma State University
The Hydraulic Conductivity Structure Of Gravel-Dominated Vadose Zones Within Alluvial Floodplains, Ronald B. Miller, Derek M. Heeren, Garey A. Fox, Todd Halihan, Daniel E. Storm, Aaron R. Mittelstet
Department of Agricultural and Biological Systems Engineering: Faculty Publications
The floodplains of many gravel-bed streams have a general stratigraphy that consists of a layer of topsoil covering gravel-dominated subsoil. Previous research has demonstrated that this stratigraphy can facilitate preferential groundwater flow through focused linear features, such as paleochannels, or gravelly regions within the vadose zone. These areas within the floodplain vadose zone may provide a route for interactions between the floodplain surface and alluvial groundwater, effectively extending the hyporheic zone across the floodplain during high stream stage. The objective of this research was to assess the structure and scale of texture heterogeneity within the vadose zone within the gravel …
Simulation Supported Estimation Of End-To-End
Transmission Parameters In Non-Viral Gene Delivery,
2014
University of Nebraska-Lincoln
Simulation Supported Estimation Of End-To-End Transmission Parameters In Non-Viral Gene Delivery, Beata J. Wysocki, Tadeusz A. Wysocki, Timothy M. Martin, Angela K. Pannier
Department of Agricultural and Biological Systems Engineering: Faculty Publications
Communications, in general, involve delivery of information from a source to a sink. At nano-scale, an example of a man-made communications involving interfacing with biological systems at intra-cellular level is non-viral gene delivery. From a telecommunications engineering perspective, important end-to-end parameters of such a system are: the endto- end delay, system capacity, and packet loss rate. There are neither known methods to estimate those parameters theoretically nor they are ready available from standard measurements. The paper provides estimates for those parameters based on the simulation of non-viral gene delivery system based on the queuing theory. The simulator used has been …
Alginate/Silica Hybrid Materials For Immobilization
Of Green Microalgae Chlorella Vulgaris For Cellbased
Sensor Arrays,
2014
University of Nebraska-Lincoln
Alginate/Silica Hybrid Materials For Immobilization Of Green Microalgae Chlorella Vulgaris For Cellbased Sensor Arrays, Angela K. Pannier, Ulrich Soltmann, Bettina Soltmann, Rolf Altenburger, Mechthild Schmitt-Jansen
Department of Agricultural and Biological Systems Engineering: Faculty Publications
Thin layers and patterned dot arrays of sodium alginate containing living microalgal cells were deposited onto glass carriers which were subsequently gelled using amino-functionalized silica sol to obtain reinforced alginate hydrogels. The resulting alginate/silica hybrid materials showed improved stability in salt-containing solutions compared to alginate gels gelled by traditional methods using Ca2+-ions. Cell arrays were patterned by printing nanolitre-scale drops of sodium alginate/cell suspension using a noncontact micro-dosage system which allows the printing of solutions of high viscosity. Cultures of the green microalga Chlorella vulgaris were immobilized within the newly developed alginate/silica hydrogels in order to demonstrate the …
In Vitro Development Of Preimplantation Porcine Embryos
Using Alginate Hydrogels As A Three-Dimensional
Extracellular Matrix,
2014
University of Nebraska-Lincoln
In Vitro Development Of Preimplantation Porcine Embryos Using Alginate Hydrogels As A Three-Dimensional Extracellular Matrix, Catherine Sargus-Patino, Elane C. Wright, Sarah A. Plautz, Jeremy R. Miles, Jeff L. Vallet, Angela K. Pannier
Department of Agricultural and Biological Systems Engineering: Faculty Publications
Between Days 10 and 12 of gestation, porcine embryos undergo a dramatic morphological change, known as elongation, with a corresponding increase in oestrogen production that triggers maternal recognition of pregnancy. Elongation deficiencies contribute to embryonic loss, but exact mechanisms of elongation are poorly understood due to the lack of an effective in vitro culture system. Our objective was to use alginate hydrogels as three-dimensional scaffolds that can mechanically support the in vitro development of preimplantation porcine embryos. White cross-bred gilts were bred at oestrus (Day 0) to Duroc boars and embryos were recovered on Days 9, 10 or 11 of …
Long-Term Activity Of Biohybrid Coatings Of
Atrazine-Degrading Bacteria Pseudomonas Sp.
Adp,
2014
University of Nebraska-Lincoln
Long-Term Activity Of Biohybrid Coatings Of Atrazine-Degrading Bacteria Pseudomonas Sp. Adp, Angela K. Pannier, T. Lehrer, M. Vogel, U. Soltmann, H. Bottcher, S. Tarre, M. Green, J. Raff, K. Pollmann
Department of Agricultural and Biological Systems Engineering: Faculty Publications
The atrazine-degrading bacterial strain Pseudomonas sp. ADP was immobilized by the sol–gel process within thin silica layers coated onto water-retaining carrier materials (expanded clay pellets and scoria). The performance of the obtained biohybrid material has been investigated concerning long-term activity under non-growth conditions. Experiments were run in phosphate buffer containing atrazine (20 mg l-1) as the sole source of carbon and nitrogen. Even after one year of consecutive batch tests, P. ADP immobilized onto expanded clay pellets showed a high atrazine degradation activity. In the course of long-term batch experiments, the average amount of removed atrazine was about …
Nutrient Concentrations Of Runoff As Affected By The Diameter Of Unconsolidated Material From Feedlot Surfaces,
2014
USDA & UNL Biological Systems Engineering
Nutrient Concentrations Of Runoff As Affected By The Diameter Of Unconsolidated Material From Feedlot Surfaces, John E. Gilley, Gregory Boone, David B. Marx
Department of Agricultural and Biological Systems Engineering: Faculty Publications
Beef cattle feedlots contain unconsolidated material that accumulates on the feedlot surface during a feeding cycle. This study was conducted to measure the effects of varying diameters of unconsolidated surface material and varying flow rates on nutrient concentrations in runoff. Unconsolidated surface material with an average diameter of 4.76, 9.53, 19.1, or 47.5 mm and a composite sample with a 15.2 mm mean diameter were placed within 0.75 m wide × 4.0 m long plot areas. Flow was then introduced at the top of the plots in successive increments, and runoff samples for water quality analyses were obtained. Particle diameter …
Dynamic Analysis Of Dna Nanoparticle Immobilization To Model Biomaterial Substrates Using Combinatorial Spectroscopic Ellipsometry And Quartz Crystal Microbalance With Dissipation,
2014
University of Nebraska-Lincoln
Dynamic Analysis Of Dna Nanoparticle Immobilization To Model Biomaterial Substrates Using Combinatorial Spectroscopic Ellipsometry And Quartz Crystal Microbalance With Dissipation, Tadas Kasputis, Alex Pieper, Mathias Schubert, Angela K. Pannier
Department of Agricultural and Biological Systems Engineering: Faculty Publications
Gene expression within cells can be altered through gene delivery approaches, which have tremendous potential for gene therapy, tissue engineering, and diagnostics. Substrate-mediated gene delivery describes the delivery of plasmid DNA or DNA complexed with nonviral vectors to cells from a surface, with the DNA immobilized to a substrate through specific or nonspecific interactions. In this work, DNA-nanoparticle (DNA–NP) adsorption to substrates is evaluated using combinatorial, in situ spectroscopic ellipsometry and quartz crystal microbalance with dissipation (SE/QCM-D), to evaluate the basic dynamic processes involved in the adsorption and immobilization of DNA–NP complexes to substrates. The concentration of DNA–NP solutions influences …
Membrane Efficiency Of A Dense Prehydrated Gcl,
2014
Bucknell University
Membrane Efficiency Of A Dense Prehydrated Gcl, Michael A. Malusis, Akmal Daniyarov
Other Faculty Research and Publications
No abstract provided.
The Fate Of Nitrogen And Phosphorus From A Simulated Highway Cross-Section,
2014
University of Central Florida
The Fate Of Nitrogen And Phosphorus From A Simulated Highway Cross-Section, Zuzanna Wasowska
Electronic Theses and Dissertations
Nutrient pollution as a result of excessive fertilizer application is of major concern for Florida's water resources. Excess fertilizer can be lost either via surface runoff or by leaching through the soil mass eventually reaching water bodies and leading to eutrophication. The focus of this study is to analyze the effect of low rainfall intensities and overland flow from an adjacent roadway surface on the loss of nutrients from two different fertilizers. This study focuses on the fate of the nitrogen and phosphorus present in fertilizers utilized by the Florida Department of Transportation for the stabilization of highway embankments. This …
Development Of A Chemical Kinetic Model For The Combustion Of A Synthesis Gas From A Fluidized-Bed Sewage Sludge Gasifier In A Thermal Oxidizer,
2014
University of Central Florida
Development Of A Chemical Kinetic Model For The Combustion Of A Synthesis Gas From A Fluidized-Bed Sewage Sludge Gasifier In A Thermal Oxidizer, Luis Martinez
Electronic Theses and Dissertations
The need for sustainability has been on the rise. Municipalities are finding ways of reducing waste, but also finding ways to reduce energy costs. Waste-to-energy is a sustainable method that may reduce bio-solids volume while also producing energy. In this research study bio-solids enters a bubbling bed gasifier and within the gasifier a synthesis gas is produced. This synthesis gas exits through the top of the gasifier and enters a thermal oxidizer for combustion. The thermal oxidizer has an innovative method of oxidizing the synthesis gas. The thermal oxidizer has two air injection sites and the possibility for aqueous ammonia …
Optimization Of Block Layout And Evaluation Of Collection Mat Materials For Polyacrylamide Treatment Channels,
2014
University of Central Florida
Optimization Of Block Layout And Evaluation Of Collection Mat Materials For Polyacrylamide Treatment Channels, Alicia Mcdougal
Electronic Theses and Dissertations
Construction sites are frequently cited as major sources of pollution that degrade the quality of surface water. The highly erodible topsoil is transported off site by stormwater runoff causing negative effects downstream. Research has shown that the small particles, which are the most susceptible to erosive forces, have more pollutants associated with them than larger soil particles. Currently, in the state of Florida, it is not permissible to discharge water to a receiving water body if the turbidity is more than 29 Nephelometric Turbidity Units (NTUs) above background or higher than background for an outstanding Florida water body. The removal …
Equity And Fairness In Transport Planning: The State Of Play,
2014
University College Dublin
Equity And Fairness In Transport Planning: The State Of Play, Sarah Rock, Aoife Ahern Prof., Brian Caulfield Dr.
Conference Papers
This paper explores the concept of equity, or fairness, in transport. As a pillar of sustainable development, social equity is an important objective of transport planning. The provision of transport infrastructure can have significant equity impacts on society through the distribution of costs and benefits. In recent years, there has been an increase in research interest in transportation related equity issues. The paper outlines the primary theoretical traditions that relate to equity and transport equity, and how equity concerns are currently addressed and evaluated in academia and in practice. Recent research has attempted to establish stronger principles from which to …
Seed Tape Effects On Corn Emergence
Under Greenhouse Conditions,
2014
The Ohio State University
Seed Tape Effects On Corn Emergence Under Greenhouse Conditions, Ramarao Venkatesh, Peter R. Thomison, Colette K. Gabriel, Mark A. Bennett, Elaine M. Grassbaugh, Matthew D. Kleinhenz, Scott A. Shearer, Santosh Pitla
Department of Agricultural and Biological Systems Engineering: Faculty Publications
Seed tape has recently received attention as an alternative planting system for smallholder farmers in underdeveloped regions of South America, Africa, China, and India (Mateus, 2014). Seed companies are also developing seed-tape planting systems for germplasm evaluations (Deppermann et al., 2013). Although seed tape has been promoted as a method for ensuring uniform seed spacing and plant density of small-seeded flowers, herbs, and vegetables (Chancellor, 1969), little or no information is available on the use of seed tape for larger-seeded row crops and its effect on crop emergence. The objective of this study was to compare the emergence of corn …
Experimental And Modelling Evaluation Of Slagging Behaviour Of German Lignite,
2014
Department of Energy Process Engineering and Chemical Engineering, Technische Universita¨t Bergakademie Freiberg– VIRTUHCON, Reiche Zeche, Fuchmu¨hlenweg 9, Haus 1, 09599 Freiberg, Germany
Experimental And Modelling Evaluation Of Slagging Behaviour Of German Lignite, Martin Kaiser, Alexander Ilyushechkin
Coal Combustion and Gasification Products Journal Archive
The behaviour of mineral matter is important for the characterisation of coal for use in entrained-flow gasification technologies. We investigated four behavioural characteristics—ash fusion temperatures (AFT), slag viscosity versus temperature profiles, temperatures of critical viscosity (TCV), and slag phase compositions—of Rhenish lignite coal ash using laboratory and modelling tools. Our modelling of AFT using coal ash composition provided a wide range of data, with only one (modified) model demonstrating agreement with experimental data. Experimental slag viscosity data were obtained over a temperature range from 1200uC to 1500uC. Where relevant, TCV was also measured. Comparison of these data to the calculated …
Fly Ash As A Potential Scrubber Of Acidic Wastes From The Phosphate Industries In Israel,
2014
Department of Chemical Biology, University of Ariel, Ariel, 40700, Israel; Department of Chemistry, Bar-Ilan University, Ramat-Gan, Israel
Fly Ash As A Potential Scrubber Of Acidic Wastes From The Phosphate Industries In Israel, Roy Nir Lieberman, Eli Lederman, Ithamar Pelly, Haim Cohen
Coal Combustion and Gasification Products Journal Archive
Fly ash (FA) is produced in Israeli utilities via bituminous coal combustion. It is used as a cement additive or in concrete production, and its economic value is low. The FA produced in Israel is very basic (defined as class F) owing to ambient air quality standards that impose low sulfur content in the imported coals. Because the lime content is high (in the South African coal, ,10 wt%), it is a good potential chemical scrubber to acidic wastes. The phosphate industry in Israel produces mainly phosphate fertilizers and water-treatment products as well as phosphoric acid. The production methods rely …
Geochemistry And Mineralogy Of Coal-Fired Circulating Fluidized Bed Combustion Fly Ashes,
2014
Laboratory of Environmental Researches and Nanotechnology Development, Centro Universitario La Salle, Mestrado em Avaliacao de Impactos Ambientais em Mineracao, Victor Barreto, 2288 Centro, 92010-000 Canoas, RS, Brazil; Environmental Science and Nanotechnology Department, Catarinense Institute of Environmental Research and Human Development– IPADHC, Capivari de Baixo, Santa Catarina, Brazil
Geochemistry And Mineralogy Of Coal-Fired Circulating Fluidized Bed Combustion Fly Ashes, Luis F.O. Silva, Marcos L.S. Oliveira, Rubens M. Kautzmann, Claudete G. Ramos, Maria Izquierdo, Shifeng Dai, Jennifer Wilcox, Jeremy Hoffman, James C. Hower
Coal Combustion and Gasification Products Journal Archive
The fuel, bed ash, and fly ash were sampled from a circulating fluidized bed combustion (CFBC) unit at two times. The first sampling was a high-sulfur (S) coal-only run, and the second sampling coincided with an experimental burn of up to 10% switchgrass (Panicum virgatum) pressed pellets mixed with a high-S coal. The latter blend had a higher moisture content and a lower heating value than the coal-only fuel. Given the time between the samplings and the special needs for the experimental run, unavoidable changes in the coal and limestone complicate comparisons of the bed ash and fly ash chemistry …
High-Recovery Inland Desalination: Concentrate Treatment By Electrodialysis And Batch Reverse Osmosis,
2014
University of Texas at El Paso
High-Recovery Inland Desalination: Concentrate Treatment By Electrodialysis And Batch Reverse Osmosis, Noe Ortega-Corral
Open Access Theses & Dissertations
Since fresh water resources are finite and stressed, it is of the utmost importance to develop alternative water resources. Efforts to recover and treat impaired water are happening in arid areas around the world, where water resources are already scarce. Such efforts are particularly focused on high-recovery treatment systems, accomplished by reducing the amount of liquid discharge with the intent to eventually reach zero liquid discharge. The goal of this research is to improve the feasibility of highrecovery inland desalination systems. Two types of high-recovery treatment systems were selected for study: (1) combined reverse osmosis (RO) and electrodialysis (ED) systems, …
Water Recovery From Silica Saturated Ro Concentrate By The Concentrate Enhanced Reverse Osmosis Process,
2014
University of Texas at El Paso
Water Recovery From Silica Saturated Ro Concentrate By The Concentrate Enhanced Reverse Osmosis Process, Gautam Patwardhan
Open Access Theses & Dissertations
Membrane fouling due to silica precipitation during reverse osmosis (RO) continues to be documented as the most common challenge in attaining stable continuous operation of RO systems across water treatment plants (1). Silica scale precipitation is time dependent and involves multiple steps leading to aqueous polymerization, condensation of polymers to form colloids, and deposition onto a solid surface (2). Exceeding the solubility of silica, widely considered to be in the range of 100-140 ppm, under a pH of 8 at 25 °C by various researchers, results in the precipitation of silica on the membranes, thereby limiting water recovery. Once the …
Study Of The Formation And Control Of Disinfection By-Products Originating From A Surface Water Supply On The Volcanic Island Of Guam,
2014
University of Central Florida
Study Of The Formation And Control Of Disinfection By-Products Originating From A Surface Water Supply On The Volcanic Island Of Guam, Erica Laberge
Electronic Theses and Dissertations
Three oxidants have been evaluated for use as alternative chemical pretreatments for Fena Lake, a surface water that supplies the U.S. Navy's Public Water System (PWS) on the volcanic island of Guam. The study consisted of two investigative components. The first and primary component included a bench-scale evaluation to study the effects of different pre-oxidant chemicals on the formation of chlorinated disinfection by-products (DBPs). The second and ancillary component included a series of water treatment and distribution system management studies that analyzed DBP formation within the treatment plant and water distribution system. The goal of this research was to reduce …
Methods For Estimating Sediment Yield And Dam Capacity In The Great Lakes Watershed,
2014
Wayne State University
Methods For Estimating Sediment Yield And Dam Capacity In The Great Lakes Watershed, Jennifer Hui
Wayne State University Theses
Sedimentation is the most important factor in the longevity of dams built in the United States. As most dams are reaching their capacity for sediment storage, this study investigated the historical and predicted future rates of sediment accumulation as well as the remaining storage capacity. This study examined the mechanisms influencing sediment production and storage in the watershed to provide future insight regarding potential control of this process. Twelve reservoirs throughout the Great Lakes watershed were selected and analyzed for their greater applicability to the entire watershed. Both historic and new data were collected on these dams to determine how …
