Simulation Of Heat And Mass Transfer In Suns River Solar Distillation, 2014 University of Texas at El Paso
Simulation Of Heat And Mass Transfer In Suns River Solar Distillation, Houman Azari
Open Access Theses & Dissertations
Many regions around the world have limited fresh water resources, and we need to desalinate brackish water resources for drinking and irrigation purposes. Most of the world is also facing energy challenges which encourages engineers and scientists to use renewable energy resources instead of hydrocarbon fuels. Arid regions such as the Middle East, many African countries, and the southwestern United States typically have abundant solar irradiance and brackish or saline water supplies. Solar-thermal desalination could be an important supply of fresh water in these regions.
The classic solar still is not efficient for providing large amounts of clean water for …
Integrated Sustainability Decision-Making Framework, 2014 University of Texas at El Paso
Integrated Sustainability Decision-Making Framework, Michael Paul Cole
Open Access Theses & Dissertations
The Integrated Sustainability Decision-Making Framework (ISDMF) is an 'ideal case' framework developed at the University of Texas El Paso (UTEP) from 2012 to present to provide the most comprehensive and concise sustainability strategy and decision-making template available.
Sustainable decision-making improves community Quality of Life, but is often beyond the reach of the majority. A framework that is most approachable, actionable, and adoptable can accelerate convergence on and continued operation of a sustainable solution. Research confirms that published frameworks continuously emerge, and are infinite in number. Iterations benefit from prior work, and contribution occurs when an 'ideal case' is envisioned, best …
Combined Qcm-D/Ge As A Tool To Characterize Stimuli-Responsive Swelling Of And Protein Adsorption On Polymer Brushes Grafted Onto 3d-Nanostructures, 2014 Leibniz-Institut für Polymerforschung Dresden
Combined Qcm-D/Ge As A Tool To Characterize Stimuli-Responsive Swelling Of And Protein Adsorption On Polymer Brushes Grafted Onto 3d-Nanostructures, Meike Koenig, Tadas Kasputis, Daniel Schmidt, Keith B. Rodenhausen Jr., Klaus-Jochen Eichhorn, Angela K. Pannier, Mathias Schubert, Manfred Stamm, Petra Uhlmann
Biological Systems Engineering: Papers and Publications
A combined setup of quartz crystal microbalance and generalized ellipsometry can be used to comprehensively investigate complex functional coatings comprising stimuli-responsive polymer brushes and 3D nanostructures in a dynamic, noninvasive in situ measurement. While the quartz crystal microbalance detects the overall change in areal mass, for instance, during a swelling or adsorption process, the generalized ellipsometry data can be evaluated in terms of a layered model to distinguish between processes occurring within the intercolumnar space or on top of the anisotropic nanocolumns. Silicon films with anisotropic nanocolumnar morphology were prepared by the glancing angle deposition technique and further functionalized by …
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
Biological Systems Engineering: Papers and 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
Biological Systems Engineering: Papers and 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 …
Experimental Design Of Photo-Fenton Reactions For The Treatment Of Car Wash Wastewater Effluents By Response Surface Methodological Analysis, 2014 Minoufiya University, Egypt
Experimental Design Of Photo-Fenton Reactions For The Treatment Of Car Wash Wastewater Effluents By Response Surface Methodological Analysis, Maha Tony, Zeinab Bedri
Articles
Establishing a treatment process for practical and economic disposal of car wash wastewater has become an urgent environmental concern. Photo-Fenton’s process as one of the advanced oxidation processes is a potentially useful oxidation process in treating such wastewater. Lab-scale experiments with UV source, coupled with Fenton’s reagent, showed that hydrocarbon oil is degradable through such a process. The feasibility of photo-Fenton’s process to treat wastewater from a car wash is investigated in the present study. A factorial design based on the response surface methodology was applied to optimize the photo-Fenton oxidation process conditions using chemical oxygen demand (COD) reduction as …
Experimental Tools To Study Molecular Recognition Within The Nanoparticle Corona, 2014 Massachusetts Institute of Technology
Experimental Tools To Study Molecular Recognition Within The Nanoparticle Corona, Markita P. Landry, Sebastian Kruss, Justin T. Nelson, Gili Bisker, Nicole M. Iverson, Nigel F. Reuel, Michael S. Strano
Biological Systems Engineering: Papers and Publications
Advancements in optical nanosensor development have enabled the design of sensors using synthetic molecular recognition elements through a recently developed method called Corona Phase Molecular Recognition (CoPhMoRe). The synthetic sensors resulting from these design principles are highly selective for specific analytes, and demonstrate remarkable stability for use under a variety of conditions. An essential element of nanosensor development hinges on the ability to understand the interface between nanoparticles and the associated corona phase surrounding the nanosensor, an environment outside of the range of traditional characterization tools, such as NMR. This review discusses the need for new strategies and instrumentation to …
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
Biological Systems Engineering: Papers and 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 …
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
Biological Systems Engineering: Papers and 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 …
Water-Stable Three-Dimensional Ultrafine Fibrous Scaffolds From Keratin For Cartilage Tissue Engineering, 2014 University of Nebraska – Lincoln
Water-Stable Three-Dimensional Ultrafine Fibrous Scaffolds From Keratin For Cartilage Tissue Engineering, Helan Xu, Shaobo Cai, Lan Xu, Yiqi Yang
Biological Systems Engineering: Papers and Publications
Intrinsically water-stable scaffolds composed of ultrafine keratin fibers oriented randomly and evenly in three dimensions were electrospun for cartilage tissue engineering. Keratin has been recognized as a biomaterial that could substantially support the growth and development of multiple cell lines. Besides, three-dimensional (3D) ultrafine fibrous structures were preferred in tissue engineering due to their structural similarity to native extracellular matrices in soft tissues. Recently, we have developed a nontraditional approach to developing 3D fibrous scaffolds from alcohol-soluble corn protein, zein, and verified their structural advantages in tissue engineering. However, keratin with highly cross-linked molecular structures could not be readily dissolved …
Development And Testing Of An In-Stream Phosphorus Cycling Model For The Soil And Water Assessment Tool, 2014 USDA-ARS Grassland, Soil, and Water Research Lab., Temple, TX
Development And Testing Of An In-Stream Phosphorus Cycling Model For The Soil And Water Assessment Tool, Michael J. White, Daniel E. Storm, Aaron R. Mittelstet, Philip R. Busteed, Brian E. Haggard, Colleen Rossi
Biological Systems Engineering: Papers and Publications
The Soil and Water Assessment Tool is widely used to predict the fate and transport of phosphorus (P) from the landscape through streams and rivers. The current in-stream P submodel may not be suitable for many stream systems, particularly those dominated by attached algae and those affected by point sources. In this research, we developed an alternative submodel based on the equilibrium P concentration concept coupled with a particulate scour and deposition model. This submodel was integrated with the SWAT model and applied to the Illinois River Watershed in Oklahoma, a basin influenced by waste water treatment plant discharges and …
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
Biological Systems Engineering: Papers and 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 …
Fate Of Antimicrobials And Antimicrobial Resistance Genes In Simulated Swine Manure Storage, 2014 University of Nebraska-Lincoln
Fate Of Antimicrobials And Antimicrobial Resistance Genes In Simulated Swine Manure Storage, Stacey R. Joy, Xu Li, Daniel D. Snow, John Gilley, Bryan L. Woodbury, Shannon L. Bartelt-Hunt
School of Natural Resources: Faculty Publications
The behavior of three antibiotics (bacitracin, chlortetracycline, and tylosin) and two classes of antibiotic resistance genes (ARGs), tet and erm, were monitored in swine manure slurry under anaerobic conditions. First-order decay rates were determined for each antibiotic with half-lives ranging from1 day (chlortetracycline) to 10 days (tylosin). ARGs were monitored in the swine manure slurry, and losses of approximately 1 to 3 orders of magnitude in relative abundance were observed during the 40 day storage period. First-order degradation profiles were observed for chlortetracycline and its corresponding resistance genes, tet(X) and tet(Q). Tylosin was degraded to approximately 10% …
Surface Gas Permeability Of Porous Building Materials: Measurement, Analysis And Applications, 2014 University of Vermont
Surface Gas Permeability Of Porous Building Materials: Measurement, Analysis And Applications, David Klein Weibust Grover
Graduate College Dissertations and Theses
In many events affecting our civil infrastructure, such as contamination or weathering, it is likely that only the surfaces of the affected building materials will be available for non-destructive measurements. In this work, we describe and analyze surface gas permeability measurements on a variety of natural and engineered building materials using two types of relatively new, non-destructive surface permeameters. It is shown that the surface gas permeability measurements correlate well with each other and could provide rapid estimates of macroscopic gas permeability and degradation of materials due to weathering. It is hypothesized that surface permeability can be used to predict …
Flash Hydrolysis Of Microalgae Biomass For Biofuels Intermediates Production, Protein Extraction, And Nutrients Recycle, 2014 Old Dominion University
Flash Hydrolysis Of Microalgae Biomass For Biofuels Intermediates Production, Protein Extraction, And Nutrients Recycle, Jose Luis Garcia Moscoso
Civil & Environmental Engineering Theses & Dissertations
Microalgae have shown much higher growth rates and productivity when compared to conventional agricultural crops, aquatic plants and tree species, requiring much less land area than other biodiesel feedstock. To harness that potential the hydrothermal liquefaction of algae biomass was studied and a new process called "Flash Hydrolysis" was developed to use water under subcritical conditions, this process capitalizes on the difference in reaction kinetics of algae polymeric components and fractionates proteins in liquid phase in seconds of residence time.
The main objectives for this study are: Analyze the effect of temperature in FH process to maximize the extraction of …
The Effect Of Metal Transfer Stability (Spattering) On Fume Generation, Morphology And Composition In Short-Circuit Mag Welding, 2013 Instituto Superior Engenharia Lisboa
The Effect Of Metal Transfer Stability (Spattering) On Fume Generation, Morphology And Composition In Short-Circuit Mag Welding, João F. Gomes
João F Gomes
No abstract provided.
Analiza Rozwoju Fragmentu Zabudowy Miasta Torunia Na Podstawie Zdjęć Z Landsat7 Z Wykorzystaniem Map Granulometrycznych., 2013 Politechnika Warszawska
Analiza Rozwoju Fragmentu Zabudowy Miasta Torunia Na Podstawie Zdjęć Z Landsat7 Z Wykorzystaniem Map Granulometrycznych., Andrzej Szeszko
Andrzej Szeszko
Głównym celem niniejszej pracy było określenie rozwoju części zabudowy miasta Torunia
w latach 1999-2005, oraz sprawdzenie, jakie wyniki w takim zadaniu można uzyskać stosując mapy
granulometryczne wygenerowane ze zdjęć panchromatycznych o rozdzielczości przestrzennej rzędu
kilkunastu metrów. Analizę przeprowadzono na podstawie fragmentów scen satelitarnych Landsat7
zarejestrowanych przez skaner ETM+ w kilku zakresach spektralnych.
Analiza składała się z trzech następujących etapów:
· wyodrębnienia zabudowy w latach 1999 i 2005
· określenie zmian w zabudowie na podstawie zasięgu zabudowy w latach 1999 i 2005
· określenie dokładności wyznaczenia zabudowy i zmian w zabudowie
Do wyodrębnienia zabudowy posłużono się klasyfikacją map granulometrycznych. Wybór map …
Clearing The Air: An Analysis Of Air Emissions From The Deepwater Horizon Oil Spill, 2013 Texas Southern University
Clearing The Air: An Analysis Of Air Emissions From The Deepwater Horizon Oil Spill, Earthea Nance, Beverly Wright
Earthea Nance, PhD (Stanford University, 2004)
No abstract provided.
Narrow Grass Hedge Effects On The Transport Of Antimicrobials And Antimicrobial Resistance Genes Following Land Application Of Swine Slurry, 2013 University of Nebraska-Lincoln
Narrow Grass Hedge Effects On The Transport Of Antimicrobials And Antimicrobial Resistance Genes Following Land Application Of Swine Slurry, Bhavneet Soni
Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research
The objective of this study was to determine the effects of manure amendment and narrow grass hedges on the fate and transport of antimicrobials and ARGs in runoff and in soil following the land application of swine manure slurry. Swine manure slurry was land applied to 0.75m wide by 4.0m long plots established on an Aksarben silty clay loam soil located in southeast Nebraska. The treatment factor manure amendment consisted of two levels: no manure application and manure application to meet the 3 year nitrogen (N) requirements for corn. The treatment factor of grass hedge was established for half of …
College Of Engineering Senior Design Competition Fall 2013, 2013 University of Nevada, Las Vegas
College Of Engineering Senior Design Competition Fall 2013, University Of Nevada, Las Vegas
Fred and Harriet Cox Senior Design Competition Projects
Part of every UNLV engineering student’s academic experience, the senior design project stimulates engineering innovation and entrepreneurship. Each student in their senior year chooses, plans, designs, and prototypes a product in this required element of the curriculum. A capstone to the student’s educational career, the senior design project encourages the student to use everything learned in the engineering program to create a practical, real world solution to an engineering challenge. The senior design competition helps focus the senior students in increasing the quality and potential for commercial application for their design projects. Judges from local industry evaluate the projects on …