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Articles 4891 - 4920 of 33693
Full-Text Articles in Entire DC Network
Investigating The Relationship Between The Fatigue Cracking Resistance And Thermal Characteristics Of Asphalt Binders Extracted From Field Mixes Containing Recycled Materials, Eslam Deef-Allah, Magdy Abdelrahman
Investigating The Relationship Between The Fatigue Cracking Resistance And Thermal Characteristics Of Asphalt Binders Extracted From Field Mixes Containing Recycled Materials, Eslam Deef-Allah, Magdy Abdelrahman
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Asphalt components have a significant contribution to the fatigue cracking resistance of asphalt mixes. Softer asphalt binders, characterized through the Superpave grading system, resist fatigue cracking more than stiffer binders. During the long-term aging, the binders’ components changed from lower- to higher-molecular-weight constituents that increased binders’ stiffnesses. Using recycled materials in the mixes increases the stiffnesses of the binders inside these mixes by altering the binders’ components. The binders were extracted and recovered (E & R) from field mixes containing different percentages of recycled materials [reclaimed asphalt pavement (RAP) and recycled asphalt shingles] and binders’ performance grades. The fatigue resistance …
Influence Of Seawater On Alkali-Activated Slag Concrete, Yubin Jun, Jae Hong Kim, Seong Ho Han, Taewan Kim
Influence Of Seawater On Alkali-Activated Slag Concrete, Yubin Jun, Jae Hong Kim, Seong Ho Han, Taewan Kim
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This study examines the use of natural seawater as mixing water for alkali-activated slag concrete and reports the characteristics of alkali-activated slag concrete with exposure to seawater. Preliminary experiments were conducted on pastes in order to measure pH and select optimum activator content under the experimental conditions. Wet-sieved pastes from fresh concrete were used to evaluate the mineralogical and microstructural characteristics of reaction products. Compressive strengths and chloride contents were measured with the hardened concrete samples. The activators used in alkali-activated slag concrete were sodium hydroxide (5% weight of slag) and liquid sodium silicate (5% weight of slag). The alkali-activated …
Removal Of Sb Impurities In Copper Electrolyte And Evaluation Of As And Fe Species In An Electrorefining Plant, Ana I. González De Las Torres, Michael S. Moats, Guillermo Ríos, Ana Rodríguez Almansa, Daniel Sánchez-Rodas
Removal Of Sb Impurities In Copper Electrolyte And Evaluation Of As And Fe Species In An Electrorefining Plant, Ana I. González De Las Torres, Michael S. Moats, Guillermo Ríos, Ana Rodríguez Almansa, Daniel Sánchez-Rodas
Materials Science and Engineering Faculty Research & Creative Works
Antimony and arsenic concentrations and their oxidation states (Sb(III), Sb(V), As(III) and As(V)) in copper electrorefining electrolyte can affect copper cathode quality through the formation of floating slimes. A laboratory-scale pilot plant was operated to remove Sb from commercial electrolyte. The pilot plant consisted of a pre-treatment process with copper shavings followed by ion exchange. The results indicated that Sb(III) was removed from copper electrolyte completely, while Sb(V) was partially eliminated. The concentrations of As(III) and As(V) were not affected, and the poisoning of the ion exchange resin by Fe(III) was avoided by pre-reduction to Fe(II) by copper shavings. The …
A Gallium-Doped Cement For The Treatment Of Bone Cancers. The Effect Of Zno ↔ Ga2o3substitution Of An Ionomeric Glass Series On The Rheological, Mechanical, Ph And Ion-Eluting Properties Of Their Corresponding Glass Polyalkenoate Cements, Sunjeev Phull, Alireza Rahimnejad Yazdi, Mark R. Towler
A Gallium-Doped Cement For The Treatment Of Bone Cancers. The Effect Of Zno ↔ Ga2o3substitution Of An Ionomeric Glass Series On The Rheological, Mechanical, Ph And Ion-Eluting Properties Of Their Corresponding Glass Polyalkenoate Cements, Sunjeev Phull, Alireza Rahimnejad Yazdi, Mark R. Towler
Chemical and Biochemical Engineering Faculty Research & Creative Works
The primary treatment for patients suffering from bone cancers is resection of the tumor followed by reconstruction of the damaged bone. Despite the administration of post-operative chemotherapy, tumor recurrence continues to present itself as a severe complication leading to re-operation. Attempts to incorporate chemotherapeutic drugs into bone cements elicits local toxic effects on healthy bone, which could compromise implant fixation. Alternatively, the local administration of gallium (Ga) may prove to be more effective. This report considers the development of a Ga ionomeric glass series (0.48SiO2-0.355ZnO-0.06CaO-0.08SrO-0.02P2O5-0.005Ta2O5, with 0.01-0.05 mol% substitution for …
Natural Molybdenite-And Tyrosinase-Based Amperometric Catechol Biosensor Using Acridine Orange As A Glue, Anchor, And Stabilizer For The Adsorbed Tyrosinase, Yan Zhang, Yue Wang, Zhiqiang Zhang, Ahmed Sobhy, Susumu Sato, Masaya Uchida, Yasushi Hasebe
Natural Molybdenite-And Tyrosinase-Based Amperometric Catechol Biosensor Using Acridine Orange As A Glue, Anchor, And Stabilizer For The Adsorbed Tyrosinase, Yan Zhang, Yue Wang, Zhiqiang Zhang, Ahmed Sobhy, Susumu Sato, Masaya Uchida, Yasushi Hasebe
Mining Engineering Faculty Research & Creative Works
To develop a natural mineral-based electrochemical enzyme biosensor, natural molybdenite (MLN), tyrosinase (TYR), and acridine orange (AO) were coadsorbed onto a glassy carbon electrode (GCE). The developed TYR/AO/MLN-GCE-based amperometric TYR biosensor exhibited excellent performance for highly sensitive determination of catechol (linear range, 0.1-80 μM; sensitivity, 0.0315 μA/μM; LOD, 0.029 μM; response time, <4 >s) with good reproducibility and good operational and storage stabilities. The electrochemical impedance spectroscopy (EIS) and quartz crystal microbalance with dissipation (QCM-D) revealed interesting roles of AO: (1) an efficient glue for enhancing the amount of the adsorbed TYR on the MLN-GCE, (2) an anchor for efficient orientation …
Towards Enabling Unmanned Aerial Vehicles As A Service For Heterogeneous Applications, Farid Nait-Abdesselam, Ahmad Alsharoa, Mohamed Y. Selim, Daji Qiao, Ahmed E. Kamal
Towards Enabling Unmanned Aerial Vehicles As A Service For Heterogeneous Applications, Farid Nait-Abdesselam, Ahmad Alsharoa, Mohamed Y. Selim, Daji Qiao, Ahmed E. Kamal
Electrical and Computer Engineering Faculty Research & Creative Works
The increasing use of unmanned aerial vehicles (UAVs) in various commercial applications, such as precision agriculture and aerial remote sensing, is fast contributing to a significant growth in the UAV market. Also, it is crucial to provide continuous coverage after failures of wireless network components or additional bandwidth in high traffic situations. By introducing the concept of UAVs as a service (UaaS), we propose a novel framework, dubbed D3S, consisting of four phases: Demand, decision, deployment, and service. The main objective of this framework is to provide a realistic and streamlined approach to support the implementation of the UaaS paradigm. …
A Wirelessly Controlled Scalable 3d-Printed Microsystem For Drug Delivery, Farzad Forouzandeh, Nuzhet N. Ahamed, Xiaoxia Zhu, Parveen Bazard, Krittika Goyal, Joseph P. Walton, Robert D. Frisina, David A. Borkholder
A Wirelessly Controlled Scalable 3d-Printed Microsystem For Drug Delivery, Farzad Forouzandeh, Nuzhet N. Ahamed, Xiaoxia Zhu, Parveen Bazard, Krittika Goyal, Joseph P. Walton, Robert D. Frisina, David A. Borkholder
Chemical and Biochemical Engineering Faculty Research & Creative Works
Here we present a 3D-printed, wirelessly controlled microsystem for drug delivery, comprising a refillable micro reservoir and a phase-change peristaltic micropump. The micropump structure was inkjet-printed on the back of a printed circuit board around a catheter microtubing. The enclosure of the microsystem was fabricated using stereolithography 3D printing, with an embedded micro reservoir structure and integrated micropump. In one configuration, the microsystem was optimized for murine inner ear drug delivery with an overall size of 19 x 13 x 3 mm3. Benchtop results confirmed the performance of the device for reliable drug delivery. The suitability of the device for …
Roles Of Key Ion Channels And Transport Proteins In Age-Related Hearing Loss, Parveen Bazard, Robert D. Frisina, Alejandro A. Acosta, Sneha Dasgupta, Mark A. Bauer, Xiaoxia Zhu, Bo Ding
Roles Of Key Ion Channels And Transport Proteins In Age-Related Hearing Loss, Parveen Bazard, Robert D. Frisina, Alejandro A. Acosta, Sneha Dasgupta, Mark A. Bauer, Xiaoxia Zhu, Bo Ding
Chemical and Biochemical Engineering Faculty Research & Creative Works
The auditory system is a fascinating sensory organ that overall, converts sound signals to electrical signals of the nervous system. Initially, sound energy is converted to mechanical energy via amplification processes in the middle ear, followed by transduction of mechanical movements of the oval window into electrochemical signals in the cochlear hair cells, and finally, neural signals travel to the central auditory system, via the auditory division of the 8th cranial nerve. The majority of people above 60 years have some form of age-related hearing loss, also known as presbycusis. However, the biological mechanisms of presbycusis are complex and not …
Single Step 2-Port Device De-Embedding Algorithm For Fixture-Dut-Fixture Network Assembly, Simone Scafati, Enza Pellegrino, Francesco De Paulis, Carlo Olivieri, James L. Drewniak, Antonio Orlandi
Single Step 2-Port Device De-Embedding Algorithm For Fixture-Dut-Fixture Network Assembly, Simone Scafati, Enza Pellegrino, Francesco De Paulis, Carlo Olivieri, James L. Drewniak, Antonio Orlandi
Electrical and Computer Engineering Faculty Research & Creative Works
The de-embedding of measurement fixtures is relevant for an accurate experimental characterization of radio frequency and digital electronic devices. The standard technique consists in removing the effects of the measurement fixtures by the calculation of the transfer scattering parameters (T-parameters) from the available measured (or simulated) global scattering parameters (S-parameters). The standard de-embedding is achieved by a multiple steps process, involving the S-to-T and subsequent T-to-S parameter conversion. In a typical measurement setup, two fixtures are usually placed before and after the device under test (DUT) allowing the connection of the device to the calibrated vector network analyzer coaxial ports. …
Teleseismic P-Wave Attenuation Beneath The Southeastern United States, Ashutosh Shrivastava, Kelly H. Liu, Stephen S. Gao
Teleseismic P-Wave Attenuation Beneath The Southeastern United States, Ashutosh Shrivastava, Kelly H. Liu, Stephen S. Gao
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Seismic attenuation is an important parameter for characterizing subsurface morphology and thermal structure. In this study, we use P-wave amplitude spectra from 588 teleseismic events recorded by 477 broadband seismic stations in the southeastern United States to examine the spatial variations of seismic attenuation in the crust and upper mantle. The resulting seismic attenuation parameter (∆t*) measurements obtained using the spectral ratio technique reveal a zone of relatively low attenuation in the Gulf of Mexico Coastal Plain and the southwestern terminus of the Piedmont province. Spatial coherency analysis of the ∆t* observations suggests that the center of the low attenuation …
Fabricating Tinicu Ternary Shape Memory Alloy By Directed Energy Deposition Via Elemental Metal Powders, Yitao Chen, Xinchang Zhang, Mohammad Masud Parvez, Joseph William Newkirk, Frank W. Liou
Fabricating Tinicu Ternary Shape Memory Alloy By Directed Energy Deposition Via Elemental Metal Powders, Yitao Chen, Xinchang Zhang, Mohammad Masud Parvez, Joseph William Newkirk, Frank W. Liou
Materials Science and Engineering Faculty Research & Creative Works
In this paper, a TiNiCu shape memory alloy single-wall structure was fabricated by the directed energy deposition technique with a mixture of elemental Ti, Ni, and Cu powders following the atomic percentage of Ti50Ni45Cu5 to fully utilize the material flexibility of the additive manufacturing process to develop ternary shape memory alloys. The chemical composition, phase, and material properties at multiple locations along the build direction were studied, using scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, Vickers hardness test-ing, tensile testing, and differential scanning calorimetry. The location-dependent compositions of martensitic TiNi and austenitic TiNi phases, mechanical properties, and functional properties …
Mechanical Properties, Translucency, And Low Temperature Degradation (Ltd) Of Yttria (3–6 Mol%) Stabilized Zirconia, R. Sharon Uwanyuze, Sulekha Ramesh, Mark K. King, Nathaniel Lawson, Manoj K. Mahapatra
Mechanical Properties, Translucency, And Low Temperature Degradation (Ltd) Of Yttria (3–6 Mol%) Stabilized Zirconia, R. Sharon Uwanyuze, Sulekha Ramesh, Mark K. King, Nathaniel Lawson, Manoj K. Mahapatra
Materials Science and Engineering Faculty Research & Creative Works
The mechanical properties (hardness and biaxial flexural strength), optical properties (translucency and gloss), and low temperature degradation (LTD) of 3–6 mol% yttria stabilized zirconia have been investigated. The specimens were prepared by conventional solid-state sintering at 1400 °C. The mechanical and optical properties were evaluated for sintered and polished specimens. X-ray diffractometer (XRD) and scanning electron microscope (SEM) were used, respectively, for structural and microstructural investigation. LTD was determined by XRD analysis of the samples aged in a hydrothermal autoclave at 134 °C for 5–108 h. The mechanical and optical properties are found to be microstructure sensitive. The LTD, due …
Optical And Structural Properties Of Manganese-Doped Zinc Oxide Grown By Metal-Organic Chemical Vapor Deposition, Vishal Saravade, Zahra Manzoor, Alexis Corda, Chuanle Zhou, Ian Ferguson, Na Lu
Optical And Structural Properties Of Manganese-Doped Zinc Oxide Grown By Metal-Organic Chemical Vapor Deposition, Vishal Saravade, Zahra Manzoor, Alexis Corda, Chuanle Zhou, Ian Ferguson, Na Lu
Electrical and Computer Engineering Faculty Research & Creative Works
This systematic study investigates the optical properties and process−structure−property relationships of Mn-doped zinc oxide (ZnMnO) grown by metal-organic chemical vapor deposition with varying Mn-doping concentration and growth conditions. ZnMnO exhibits a good crystal quality oriented in the (002) direction and contains intermixtures of zinc oxide (ZnO)-like and manganese oxide (MnxOy)-like phases. The material exhibits a direct energy absorption band-edge and a reduction in bandgap with Mn-doping. Photoluminescence studies show that Mn-doping can simultaneously tailor broad green band luminescence and ultraviolet edge emissions. Post-growth air-annealing results in broad MnxOy-related photoluminescence emissions at 3.3–4.5 eV. A further reduction in the absorption band-edge …
Giant Power Density Produced By Pin-Pmn-Pt Ferroelectric Single Crystals Due To A Pressure Induced Polar-To-Nonpolar Phase Transformation, Sergey I. Shkuratov, Jason Baird, Vladimir G. Antipov, Christopher S. Lynch, Shujun Zhang, Jay B. Chase, Hwan R. Jo
Giant Power Density Produced By Pin-Pmn-Pt Ferroelectric Single Crystals Due To A Pressure Induced Polar-To-Nonpolar Phase Transformation, Sergey I. Shkuratov, Jason Baird, Vladimir G. Antipov, Christopher S. Lynch, Shujun Zhang, Jay B. Chase, Hwan R. Jo
Mining Engineering Faculty Research & Creative Works
The search for ferroelectric materials capable of producing high electric charge and power densities is important for developing a new generation of autonomous ferroelectric megawatt power supplies and ultrahigh-power-density ferroelectric energy storage devices. Here we report the results of experimental investigations of the mechanism for stress-induced depolarization of adiabatically compressing rhombohedral Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) single crystals. The important finding is that the geometric dimensions of PIN-PMN-PT crystals and the direction of adiabatic compression relative to the crystallographic orientation have significant impacts on the depolarization dynamics and the generated charge density. Based on the analysis of experimental results, we conclude that a …
Aircraft Measurements Of Aerosol And Trace Gas Chemistry In The Eastern North Atlantic, Maria A. Zawadowicz, Kaitlyn Suski, Jiumeng Liu, Mikhail Pekour, Jerome Fast, Fan Mei, Arthur J. Sedlacek, Stephen Springston, Yang Wang, For Full List Of Authors, See Publisher's Website.
Aircraft Measurements Of Aerosol And Trace Gas Chemistry In The Eastern North Atlantic, Maria A. Zawadowicz, Kaitlyn Suski, Jiumeng Liu, Mikhail Pekour, Jerome Fast, Fan Mei, Arthur J. Sedlacek, Stephen Springston, Yang Wang, For Full List Of Authors, See Publisher's Website.
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The Aerosol and Cloud Experiment in the Eastern North Atlantic (ACE-ENA) investigated properties of aerosols and subtropical marine boundary layer (MBL) clouds. Low subtropical marine clouds can have a large effect on Earth s radiative budget, but they are poorly represented in global climate models. In order to understand their radiative effects, it is imperative to understand the composition and sources of the MBL cloud condensation nuclei (CCN). The campaign consisted of two intensive operation periods (IOPs) (June-July 2017 and January-February 2018) during which an instrumented G-1 aircraft was deployed from Lajes Field on Terceira Island in the Azores, Portugal. …
Energy-Based Orbital Stabilization Of Underactuated Systems Using Impulse Controlled Poincaré Maps, Nilay Kant, Ranjan Mukherjee
Energy-Based Orbital Stabilization Of Underactuated Systems Using Impulse Controlled Poincaré Maps, Nilay Kant, Ranjan Mukherjee
Mechanical and Aerospace Engineering Faculty Research & Creative Works
The problem of energy-based orbital stabilization of underactuated mechanical systems with one passive degree-of-freedom is addressed. The orbit is a manifold where the active generalized coordinates are fixed, and the total mechanical energy is equal to some desired value. A hybrid control strategy comprised of continuous and intermittent impulsive inputs is presented. The continuous controller is designed using partial feedback inearization to converge the active generalized coordinates to their desired values. The choice of desired energy characterizes a unique orbit which is stable but not asymptotically stable. To stabilize the desired orbit, a Poincaré section is constructed at a fixed …
Cyclic Regeneration Of Nanostructured Composites For Catalytic Applications, Fatih Dogan
Cyclic Regeneration Of Nanostructured Composites For Catalytic Applications, Fatih Dogan
Materials Science and Engineering Faculty Research & Creative Works
A cermet catalyst material, defining a matrix having interconnected open pores, the matrix selected from the group consisting of YSZ and CGO and defining a substrate, a ceramic coating having a general formula AyBnOx at least partially coating the pores, and a plurality of metal particles A at least partially embedded in the ceramic coating. A is selected from the group consisting of Co, Cu, Ce, Ni, Ti, and combinations thereof and B is selected from the group consisting of Mo, W, Ce, and combinations thereof. When the coating is in a first oxidizing atmosphere and at a temperature between …
Sensitivity-Enhanced Microwave-Photonic Optical Fiber Interferometry Based On The Vernier Effect, Chen Zhu, Jie Huang
Sensitivity-Enhanced Microwave-Photonic Optical Fiber Interferometry Based On The Vernier Effect, Chen Zhu, Jie Huang
Electrical and Computer Engineering Faculty Research & Creative Works
This paper proposes optical carrier microwave interferometry (OCMI)-based optical fiber interferometers for sensing applications with improved measurement sensitivity with the assistance of the Vernier effect. Fabry-Perot interferometers (FPIs) are employed in the proof of concept. A single-FPI-OCMI system is first demonstrated for measurements of variations of temperatures by tracking the spectral shift of the interferogram in microwave domain. By cascading two FPIs with slightly different optical lengths, the Vernier effect is generated in the magnitude spectrum of the system with a typical amplitude-modulated signal. By tracking the shift of the envelope signal, temperature measurements are experimentally demonstrated with greatly enhanced …
Accelerating Multigrid-Based Hierarchical Scientific Data Refactoring On Gpus, Jieyang Chen, Lipeng Wan, Xin Liang, Ben Whitney, For Full List Of Authors, See Publisher's Website.
Accelerating Multigrid-Based Hierarchical Scientific Data Refactoring On Gpus, Jieyang Chen, Lipeng Wan, Xin Liang, Ben Whitney, For Full List Of Authors, See Publisher's Website.
Computer Science Faculty Research & Creative Works
Rapid growth in scientific data and a widening gap between computational speed and I/O bandwidth make it increasingly infeasible to store and share all data produced by scientific simulations. Instead, we need methods for reducing data volumes: ideally, methods that can scale data volumes adaptively so as to enable negotiation of performance and fidelity tradeoffs in different situations. Multigrid-based hierarchical data representations hold promise as a solution to this problem, allowing for flexible conversion between different fidelities so that, for example, data can be created at high fidelity and then transferred or stored at lower fidelity via logically simple and …
Revisiting Huffman Coding: Toward Extreme Performance On Modern Gpu Architectures, Jiannan Tian, Cody Rivera, Sheng Di, Jieyang Chen, Xin Liang, Dingwen Tao, Franck Cappello
Revisiting Huffman Coding: Toward Extreme Performance On Modern Gpu Architectures, Jiannan Tian, Cody Rivera, Sheng Di, Jieyang Chen, Xin Liang, Dingwen Tao, Franck Cappello
Computer Science Faculty Research & Creative Works
Today’s high-performance computing (HPC) applications are producing vast volumes of data, which are challenging to store and transfer efficiently during the execution, such that data compression is becoming a critical technique to mitigate the storage burden and data movement cost. Huffman coding is arguably the most efficient Entropy coding algorithm in information theory, such that it could be found as a fundamental step in many modern compression algorithms such as DEFLATE. On the other hand, today’s HPC applications are more and more relying on the accelerators such as GPU on supercomputers, while Huffman encoding suffers from low throughput on GPUs, …
Population Properties Of Compact Objects From The Second Ligo-Virgo Gravitational-Wave Transient Catalog, R. Abbott, T. D. Abbott, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.
Population Properties Of Compact Objects From The Second Ligo-Virgo Gravitational-Wave Transient Catalog, R. Abbott, T. D. Abbott, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.
Physics Faculty Research & Creative Works
We report on the population of 47 compact binary mergers detected with a false-alarm rate of < 1 yr-1 in the second LIGO-Virgo Gravitational-Wave Transient Catalog. We observe several characteristics of the merging binary black hole (BBH) population not discernible until now. First, the primary mass spectrum contains structure beyond a power law with a sharp high-mass cutoff; it is more consistent with a broken power law with a break at 39.7+20.3-9.1 M⊙ or a power law with a Gaussian feature peaking at 33.1+4.0-5.6 M⊙ (90% credible interval). While the primary mass distribution must extend to …
Компьютерные Технологии Как Фактор Оптимизации Процесса Формирования Речевых Навыков При Смешанном И Дистанционном Обучении Русскому Языку Как Иностранному (Рки), Irina V. Ivliyeva
Компьютерные Технологии Как Фактор Оптимизации Процесса Формирования Речевых Навыков При Смешанном И Дистанционном Обучении Русскому Языку Как Иностранному (Рки), Irina V. Ivliyeva
Arts, Languages and Philosophy Faculty Research & Creative Works
No abstract provided.
Tuning Polymorphs And Morphology Of Microbially Induced Calcium Carbonate: Controlling Factors And Underlying Mechanisms, Maryam Khanjani, David J. Westenberg, Aditya Kumar, Hongyan Ma
Tuning Polymorphs And Morphology Of Microbially Induced Calcium Carbonate: Controlling Factors And Underlying Mechanisms, Maryam Khanjani, David J. Westenberg, Aditya Kumar, Hongyan Ma
Biological Sciences Faculty Research & Creative Works
Microbially precipitated calcium carbonate (CaCO3) has drawn broad attention due to its potential applications in various areas, for example, biocementation, medicine, and soil reinforcement. Sporosarcina pasteurii (S. pasteurii), formerly known as Bacillus pasteurii, has been investigated for CaCO3 biomineralization due to its high ureolytic activity. A high degree of supersaturation with respect to the presence of bacterial cell wall, extracellular polymeric substances, and organic byproducts of bacterial activity plays an important role in the formation and stabilization of CaCO3 polymorphs. Although microbially induced CaCO3 and its polymorphs have been investigated broadly, the …
Copper Selenide As Multifunctional Non-Enzymatic Glucose And Dopamine Sensor, Harish Singh, Jillian Bernabe, Justin Chern, Manashi Nath
Copper Selenide As Multifunctional Non-Enzymatic Glucose And Dopamine Sensor, Harish Singh, Jillian Bernabe, Justin Chern, Manashi Nath
Chemistry Faculty Research & Creative Works
Cu2Se, synthesized through one-pot hydrothermal synthesis, was identified as highly efficient bifunctional sensor for co-detection of glucose and dopamine with high selectivity. As-synthesized copper selenide could electro-oxidize glucose and dopamine at different applied potentials. Glucose oxidation was observed at 0.35 V while dopamine oxidized at 0.2 V. This copper selenide-based non-enzymatic sensor showed high sensitivity for both glucose (15.341 mA mM-1 cm-2) and dopamine (12.43 μA μM-1 cm-2) with low limit of detection (0.26 μM and 84 nM). Such high sensitivity and low LOD makes this sensor attractive for possible detection of …
The Effect Of Nanostructures In Aluminum Alloys Processed Using Additive Manufacturing On Microstructural Evolution And Mechanical Performance Behavior, Rachel Boillat, Sriram Praneeth Isanaka, Frank W. Liou
The Effect Of Nanostructures In Aluminum Alloys Processed Using Additive Manufacturing On Microstructural Evolution And Mechanical Performance Behavior, Rachel Boillat, Sriram Praneeth Isanaka, Frank W. Liou
Mechanical and Aerospace Engineering Faculty Research & Creative Works
This paper reviews the status of nanoparticle technology as it relates to the additive manufacturing (AM) of aluminum-based alloys. A broad overview of common AM processes is given. Additive manufacturing is a promising field for the advancement of manufacturing due to its ability to yield near-net-shaped components that require minimal post-processing prior to end-use. AM also allows for the fabrication of prototypes as well as economical small batch production. Aluminum alloys processed via AM would be very beneficial to the manufacturing industry due to their high strength to weight ratio; however, many of the conventional alloy compositions have been shown …
Dilution Impacts On Smoke Aging: Evidence In Biomass Burning Observation Project (Bbop) Data, Anna L. Hodshire, Emily Ramnarine, Ali Akherati, Matthew L. Alvarado, Delphine K. Farmer, Shantanu H. Jathar, Sonia M. Kreidenweis, Chantelle R. Lonsdale, Timothy B. Onasch, Stephen R. Springston, Jian Wang, Yang Wang, For Full List Of Authors, See Publisher's Website.
Dilution Impacts On Smoke Aging: Evidence In Biomass Burning Observation Project (Bbop) Data, Anna L. Hodshire, Emily Ramnarine, Ali Akherati, Matthew L. Alvarado, Delphine K. Farmer, Shantanu H. Jathar, Sonia M. Kreidenweis, Chantelle R. Lonsdale, Timothy B. Onasch, Stephen R. Springston, Jian Wang, Yang Wang, For Full List Of Authors, See Publisher's Website.
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Biomass burning emits vapors and aerosols into the atmosphere that can rapidly evolve as smoke plumes travel downwind and dilute, affecting climate- and health-relevant properties of the smoke. To date, theory has been unable to explain observed variability in smoke evolution. Here, we use observational data from the Biomass Burning Observation Project (BBOP) field campaign and show that initial smoke organic aerosol mass concentrations can help predict changes in smoke aerosol aging markers, number concentration, and number mean diameter between 40-262 nm. Because initial field measurements of plumes are generally > 10 min downwind, smaller plumes will have already undergone substantial …
Scholars' Mine Quick Facts April 2021, Nancy S. Krost
Scholars' Mine Quick Facts April 2021, Nancy S. Krost
Scholars’ Mine Statistics
Scholars' Mine Quick Facts are monthly reports of downloads, page hits, and other information about works in the institutional repository of Missouri S&T. A map with downloads by region is also included.
Automatically Selecting Follow-Up Questions For Deficient Bug Reports, Mia Mohammad Imran, Agnieszka Ciborowska, Kostadin Damevski
Automatically Selecting Follow-Up Questions For Deficient Bug Reports, Mia Mohammad Imran, Agnieszka Ciborowska, Kostadin Damevski
Computer Science Faculty Research & Creative Works
The availability of quality information in bug reports that are created daily by software users is key to rapidly fixing software faults. Improving incomplete or deficient bug reports, which are numerous in many popular and actively developed open-source software projects, can make software maintenance more effective and improve software quality. In this paper, we propose a system that addresses the problem of bug report incompleteness by automatically posing follow-up questions, intended to elicit answers that add value and provide missing information to a bug report. Our system is based on selecting follow-up questions from a large corpus of already posted …
Settling Of Spherical Particles In High Viscosity Friction Reducer Fracture Fluids, Ghith Biheri, Abdulmohsin Imqam
Settling Of Spherical Particles In High Viscosity Friction Reducer Fracture Fluids, Ghith Biheri, Abdulmohsin Imqam
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Investigating the key factors that impact fluid rheology and proppant static settling velocity in high viscosity friction reducers (HVFRs) is a critical aspect for successful proppant transport in hydraulic fracture treatment. In this study, the rheological properties of HVFRs were tested at various temperature ranges (i.e., 25, 50, 75, and 100◦C) and different HVFR concentrations (i.e., 1, 2, 4, and 8 gpt). Three sizes of spherical particle diameters (i.e., 2, 4, and 6 mm) were selected to measure the static settling velocity. The fracture fluid was tested in two fracture models: an unconfined glass model and a confined rectangular model …
In Vivo Analysis Of A Proprietary Glass-Based Adhesive For Sternal Fixation And Stabilization Using Rabbit And Sheep Models, Cina Mehrvar, Emily Deignan, Mark Hurtig, Gideon Cohen, Paul Zalzal, Oleg Safir, Adel Alhalawani, Marcello Papini, Mark R. Towler
In Vivo Analysis Of A Proprietary Glass-Based Adhesive For Sternal Fixation And Stabilization Using Rabbit And Sheep Models, Cina Mehrvar, Emily Deignan, Mark Hurtig, Gideon Cohen, Paul Zalzal, Oleg Safir, Adel Alhalawani, Marcello Papini, Mark R. Towler
Chemical and Biochemical Engineering Faculty Research & Creative Works
Wire cerclage remains the standard method of care for sternal fixation, following median sternotomy, despite being beset with complications. An emerging treatment option has been to augment the wires with an adhesive. A patented ionomeric glass (mole fraction: SiO2:0.48, ZnO:0.36, CaO:0.12, SrO:0.04) has been used to formulate GPC+, a glass polyalkenoate cement (GPC), by mixing it with poly(acrylic) acid (PAA) and de-ionized water. In a human cadaver study, this material, when applied with wire cerclage, was able to significantly reduce sternal instability. However, the material has yet to be tested in pertinent animal models. Here, after a series …