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Csar 62 Spin Curve, Mohsen Azadi, Georgia Griggs, Glen de Villafranca, Gerald Lopez 2018 Singh Center for Nanotechnology

Csar 62 Spin Curve, Mohsen Azadi, Georgia Griggs, Glen De Villafranca, Gerald Lopez

Protocols and Reports

No abstract provided.


Jpk.Pdf, jpk sonick 2018 Eastern Washington University

Jpk.Pdf, Jpk Sonick

jpk sonick

Kami menerima jasa refill tabung pemadam kebakaran untuk berbagai merk yang berada di pasaran dan untuk berbagai media


Evaluating Water Filtration And Disinfection For Household, Using Slow Sand Filters Plus Solar Disinfection, Mariana Demitry 2018 Utah State University

Evaluating Water Filtration And Disinfection For Household, Using Slow Sand Filters Plus Solar Disinfection, Mariana Demitry

All Graduate Theses and Dissertations

In this research, a household water treatment system was built and evaluated as a trial for improving the drinking water quality of the Nile River for the low-income communities. The system consisted of household-scale slow sand filters, and transparent polyethylene terephthalate-bottles for solar disinfection. The evaluation of the system depended on the removal/inactivation of some surrogates for the reference pathogens, and turbidity. The reference pathogens are pathogens specified by the World Health Organization to evaluate the efficiency of the household water treatment options. They were chosen to represent the classes of pathogens in water (bacteria, viruses, protozoa). The surrogates ...


Evaluating The Impact Of External Carbon Source In Laboratory-Based Denitrification Rate Experiments, Jared Richens 2018 Utah State University

Evaluating The Impact Of External Carbon Source In Laboratory-Based Denitrification Rate Experiments, Jared Richens

All Graduate Theses and Dissertations

Limitations in the quality of transformation rates used with water quality models such as QUAL2K have led to the need to identify methods that can effectively and accurately determine these rates. During the early stages of method development of a Utah Department of Environmental Quality (Utah DEQ) funded project seeking to identify such methods, it was determined that under certain situations external carbon amendment may be required to successfully determine denitrification rates.

The focus of this study was to evaluate the potential impacts that introducing external carbon sources may have on estimating the laboratory denitrification rates resulting from these methods ...


Methods For The Aerostructural Design And Optimization Of Wings With Arbitrary Planform And Payload Distribution, Jeffrey D. Taylor 2018 Utah State University

Methods For The Aerostructural Design And Optimization Of Wings With Arbitrary Planform And Payload Distribution, Jeffrey D. Taylor

All Graduate Theses and Dissertations

The design of an aircraft wing often involves the use of mathematical methods for simultaneous aerodynamic and structural design. The goal of many of these methods is to minimize the drag on the wing. A variety of computer models exist for this purpose, but some require the use of expensive time and computational resources to give meaningful results. As an alternative, some mathematical methods have been developed that give reason ably accurate results without the need for a computer. However, most of these methods can only be used for wings with specific shapes and payload distributions. In this thesis, a ...


Thrust Augmented Nozzle For A Hybrid Rocket With A Helical Fuel Port, Joel H. Marshall 2018 Utah State University

Thrust Augmented Nozzle For A Hybrid Rocket With A Helical Fuel Port, Joel H. Marshall

All Graduate Theses and Dissertations

A thrust augmented nozzle for hybrid rocket systems is investigated. The design lever-ages 3-D additive manufacturing to embed a helical fuel port into the thrust chamber of a hybrid rocket burning gaseous oxygen and ABS plastic as propellants. The helical port significantly increases how quickly the fuel burns, resulting in a fuel-rich exhaust exiting the nozzle. When a secondary gaseous oxygen flow is injected into the nozzle downstream of the throat, all of the remaining unburned fuel in the plume spontaneously ignites. This secondary reaction produces additional high pressure gases that are captured by the nozzle and significantly increases the ...


On Condition Monitoring Of High Switching Frequency Power Gan Converters With Adaptive Prognostics.Pdf, Mehrdad Biglarbegian 2018 University of North Carolina at Charlotte

On Condition Monitoring Of High Switching Frequency Power Gan Converters With Adaptive Prognostics.Pdf, Mehrdad Biglarbegian

Mehrdad Biglarbegian

There is no doubt that in the future, a need for higher switching frequency is inevitable to extract the full benefits of reliable Gallium Nitride (GaN) device characteristics. Along with the reliability enhancement for GaN-based power converters, it is essential to monitor a precursor signature identification for diagnostics/prognostics techniques. With the availability of the most granular information deduced from advanced devices, a new data-driven scheme is proposed for system monitoring and possible lifetime extension of 400W power GaN converters at 100kHz. The approach relies on the real-time R_ds(on) data extraction from the power converter, and calibration of an ...


Multi-Purpose Generic Board For Hands-On Power Electronics Education Of Different Power Converter Topologies In Pv Applications.Pdf, Mehrdad Biglarbegian 2018 University of North Carolina at Charlotte

Multi-Purpose Generic Board For Hands-On Power Electronics Education Of Different Power Converter Topologies In Pv Applications.Pdf, Mehrdad Biglarbegian

Mehrdad Biglarbegian

This paper presents the development of a multi-purpose generic board for hands-on power electronics education lab session focusing on Photovoltaic (PV) power electronics applications. The presented work tries to apply advanced methods for circuit designs and firmware developments of a DC/DC and a DC/AC converter for helping students to get familiar with system/subsystem level learning. The developed advanced converters can be used for interconnection of low voltage PV systems. Besides, the objective is to expedite the transferring of theory to practical purposes and to provide hands-on experiences for the development of power electronics systems.


Development Of Isolated Sensegan Current Monitoring For Boundary Conduction Mode Control Of Power Converters, Mehrdad Biglarbegian 2018 University of North Carolina at Charlotte

Development Of Isolated Sensegan Current Monitoring For Boundary Conduction Mode Control Of Power Converters, Mehrdad Biglarbegian

Mehrdad Biglarbegian

This paper presents the design of the Isolated SenseGaN (Iso-SenseGaN) current sensing technique using Gallium Nitride (GaN) transistors. The isolation technique for the SenseGaN brings an opportunity for integration of sensing element with the power modules, and enables many control schemes in power converters. This could effectively open broader area for smart device monitoring, implementation of current controlling techniques at high frequency, and proper feedback for diagnostics/prognostics developments. In this work, the focus is on the practical challenges for the SenseGaN technique and presenting the inductor-based galvanic isolation. Using the current mirroring method, the authors defined a cursor for ...


Correlation For Sessile Drop Evaporation Over A Wide Range Of Drop Volatilities, Ambient Gases And Pressures, Peter Kelly-Zion, Christopher J. Pursell, Gregory N. Wassom, Brenton V. Mandelkorn, Chris Nkinthorn 2018 Trinity University

Correlation For Sessile Drop Evaporation Over A Wide Range Of Drop Volatilities, Ambient Gases And Pressures, Peter Kelly-Zion, Christopher J. Pursell, Gregory N. Wassom, Brenton V. Mandelkorn, Chris Nkinthorn

Engineering Faculty Research

A correlation for the evaporation of sessile drops over a very broad range of conditions was developed based on measured evaporation rate data obtained for drops of acetone, methanol, and six hydrocarbons ranging from hexane to isooctane, evaporating in air, helium, argon, and krypton, over a range of ambient pressures from 96 kPa to 615 kPa. The experiments were designed to produce a large variation in the rates of diffusion and buoyancy-induced (natural) convection of the vapor phase amongst the experimental conditions. The correlation, which fits the measurements with an RMS relative error of 5.2%, is a simple equation ...


In Operando Mechanism Analysis On Nanocrystalline Silicon Anode Material For Reversible And Ultrafast Sodium Storage, Lei Zhang, Xianluo Hu, Chaoji Chen, Haipeng Guo, Xiaoxiao Liu, Gengzhao Xu, Haijian Zhong, Shuang Cheng, Peng Wu, Jiashen Meng, Yunhui Huang, Shi Xue Dou, Hua-Kun Liu 2018 University of Wollongong

In Operando Mechanism Analysis On Nanocrystalline Silicon Anode Material For Reversible And Ultrafast Sodium Storage, Lei Zhang, Xianluo Hu, Chaoji Chen, Haipeng Guo, Xiaoxiao Liu, Gengzhao Xu, Haijian Zhong, Shuang Cheng, Peng Wu, Jiashen Meng, Yunhui Huang, Shi Xue Dou, Hua-Kun Liu

Australian Institute for Innovative Materials - Papers

Presently, lithium-ion batteries (LIBs) are the most promising commercialized electrochemical energy storage systems. Unfortunately, the limited resource of Li results in increasing cost for its scalable application and a general consciousness of the need to find new type of energy storage technologies. Very recently, substantial effort has been invested to sodium-ion batteries (SIBs) due to their effectively unlimited nature of sodium resources. Furthermore, the potential of Li/Li+ is 0.3 V lower than that of Na/Na+, which makes it more effective to limit the electrolyte degradation on the outer surface of the electrode.[1] Nevertheless, one major obstacle ...


Editorial - Volume 1, 2018, Pp.1-2, Wojciech M. Budzianowski 2018 Wojciech Budzianowski Consulting Services

Editorial - Volume 1, 2018, Pp.1-2, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Magnetic Properties Of Gd Intermetallics, L. Petit, Z. Szotek, J. Jackson, M. Lüders, Durga Paudyal, Yaroslav Mudryk, Vitalij K. Pecharsky, K. A. Gschneidner, J. B. Staunton 2018 Daresbury Laboratory

Magnetic Properties Of Gd Intermetallics, L. Petit, Z. Szotek, J. Jackson, M. Lüders, Durga Paudyal, Yaroslav Mudryk, Vitalij K. Pecharsky, K. A. Gschneidner, J. B. Staunton

Ames Laboratory Accepted Manuscripts

Using first-principles calculations, based on disordered local moment theory, combined with the self-interaction corrected local spin density approximation, we study magnetic interactions in GdX intermetallics for X = Cu, Zn, Ga, Cd, and Mg. Our predicted magnetic orders and ordering temperatures both at zero and other pressures agree well with experiments including the large increase in the Curie temperature of GdCd under pressure that is shown by our own experimental measurements. From our results it emerges that the Ruderman-Kittel-Kasuya-Yosida interaction on its own can not explain the observed behaviour under pressure, and that the magnetic ordering mechanism is strongly influenced by ...


A Safety And Emissions Analysis Of Continuous Flow Intersections, Joshua Wolfgram 2018 University of Massachusetts Amherst

A Safety And Emissions Analysis Of Continuous Flow Intersections, Joshua Wolfgram

Environmental & Water Resources Engineering Masters Projects

Increasing travel demand, and challenges associated with high percentages of leftturning vehicles, have encouraged the introduction of significant infrastructure advancements. Certain alternative intersection designs, such as continuous flow intersections, median U-turns, and jughandles, eliminate the traditional protected lefterations of these intersection types have been studied to varying degrees, their safety and emissions-related impacts are not well-understood. This project develops a series of microsimulation models for two continuous flow intersections (CFI) located in Missouri and Colorado, and uses the Surrogate Safety Assessment Model (SSAM) to determine the impact of those designs on the location and type of conflicts compared to conventional ...


Utm, Atm, Stm… Slices Of The Sky?, Ruth E. Stilwell 2018 Norwich University

Utm, Atm, Stm… Slices Of The Sky?, Ruth E. Stilwell

Space Traffic Management Conference

UTM, ATM, STM… slices of the sky?

This paper will examine the functional differences between Unmanned Aircraft Traffic Management Systems, Air Traffic Management Systems, and Space Traffic Management. Understanding both the similarities between the systems and the different functional requirements of each concept is critical in the discussion and development of STM. While there are many commonalities in each area, it is important to understand how the different environments affect the ability to develop policies, procedure and technologies to manage the vehicles operating in the distinct environment. Both technical and legal frameworks will be discussed.

Building a conceptual framework for ...


Responsible Behavior For Constellations And Clusters, Darren McKnight, Jonathan Rosenblatt, Darren Garber 2018 Integrity Applications, Inc.

Responsible Behavior For Constellations And Clusters, Darren Mcknight, Jonathan Rosenblatt, Darren Garber

Space Traffic Management Conference

Many large constellations are being considered for deployment over the next ten years into low earth orbit (LEO). This paper seeks to quantify the risks that these constellations pose to the debris environment, the risks that the debris environment poses to these constellations, and the risks that these constellations pose to themselves. The three representative constellations examined in detail in this paper are operated (or planned to be operated) by Spire Global, Iridium, and OneWeb. This paper provides a balanced risk analysis including collision risk, operational risk, and non-adherence risk. For perspective, the risk posed by these economically useful constellations ...


Monitoring Tylosin And Sulfamethazine In A Tile-Drained Agricultural Watershed Using Polar Organic Chemical Integrative Sampler (Pocis), Maurice T. Washingtion, Thomas Moorman, Michelle L. Soupir, Mack C. Shelley II, Amy J. Morrow 2018 Iowa State University

Monitoring Tylosin And Sulfamethazine In A Tile-Drained Agricultural Watershed Using Polar Organic Chemical Integrative Sampler (Pocis), Maurice T. Washingtion, Thomas Moorman, Michelle L. Soupir, Mack C. Shelley Ii, Amy J. Morrow

Agricultural and Biosystems Engineering Publications

This study evaluated the influence of temporal variation on the occurrence, fate, and transport of tylosin (TYL) and sulfamethazine (SMZ); antibiotics commonly used in swine production. Atrazine (ATZ) was used as a reference analyte to indicate the agricultural origin of the antibiotics. We also assessed the impact of season and hydrology on antibiotic concentrations. A reconnaissance study of the South Fork watershed of the Iowa River (SFIR), was conducted from 2013 to 2015. Tile drain effluent and surface water were monitored using polar organic integrative sampler (POCIS) technology. Approximately 169 animal feeding operations (AFOs) exist in SFIR, with 153 of ...


Laboratory Catalytic Reactors For Testing Heterogeneous Catalysts: A Practical Introduction, Steven Zhou, Jason Yang 2018 Selected Works

Laboratory Catalytic Reactors For Testing Heterogeneous Catalysts: A Practical Introduction, Steven Zhou, Jason Yang

Steven Zhou

Laboratory catalytic reactors are commonly used to evaluate performance of heterogeneous catalysts. It is of importance to select appropriate reactors for specific catalytic system before actual experiments are carried out. In the present work, various laboratory catalytic reactors are introduced and summarized for testing heterogeneous catalysts.


Turnover Frequency (Tof) For Insight Into Reaction Rates Via Noble Metal Supported Catalysts, Steven Zhou, Jason Yang 2018 Selected Works

Turnover Frequency (Tof) For Insight Into Reaction Rates Via Noble Metal Supported Catalysts, Steven Zhou, Jason Yang

Steven Zhou

Turnover frequency (TOF) refers to the number of reacted molecules per surface active site per time for a catalytic reaction. Today, rate data in arbitrary units or plots of conversion versus time are slowly becoming the exception rather than the rule in the scientific literature of catalysis. With only one unit, a value of TOF offers a straightforward way to compare data obtained in different laboratories. In the present work, we show TOF measurement approach and insight into noble metal supported catalysis it provides.


Turnover Frequency (Tof) For Insight Into Reaction Rates Via Noble Metal Supported Catalysts, Steven Zhou, Jason Yang 2018 Selected Works

Turnover Frequency (Tof) For Insight Into Reaction Rates Via Noble Metal Supported Catalysts, Steven Zhou, Jason Yang

Jason Yang

Turnover frequency (TOF) refers to the number of reacted molecules per surface active site per time for a catalytic reaction. Today, rate data in arbitrary units or plots of conversion versus time are slowly becoming the exception rather than the rule in the scientific literature of catalysis. With only one unit, a value of TOF offers a straightforward way to compare data obtained in different laboratories. In the present work, we show TOF measurement approach and insight into noble metal supported catalysis it provides.


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