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Synthesizing Adversarial Examples For Neural Networks, Hasitha Rasineni Jan 2109

Synthesizing Adversarial Examples For Neural Networks, Hasitha Rasineni

Creative Components

As machine learning is being integrated into more and more systems, such as autonomous vehicles or medical devices, they are also becoming entry points for attacks. Many sate-of-the-art neural networks have been proved, to be vulnerable to adversarial examples. These failures of machine learning models demonstrate that even simple algorithms can behave very differently from what their designers intend to. In order to close this gap between what designers intend to and how algorithms behave, there is a huge need for preventing adversarial examples to improve the credibility of the model. This study focuses on synthesizing adversarial examples using two ...


Kriging-Based Design For Robust High-Performance Control Systems, Laura Micheli, Simon Laflamme Dec 2020

Kriging-Based Design For Robust High-Performance Control Systems, Laura Micheli, Simon Laflamme

Civil, Construction and Environmental Engineering Publications

High-performance control systems (HPCS) are sophisticated vibration-mitigation devices that include active, semiactive, and hybrid systems. HPCS leverage feedback mechanisms to dynamically adjust the damping force in response to motion, offering a good mitigation performance over a wide excitation bandwidth. These damping systems are attractive for multihazard mitigation of civil structures. However, the application of HPCS necessitates the design and integration of a closed-loop control system that can be susceptible to local failure or reduction in performance in the form of, for example, malfunctions of HPCS components, noisy measurements, wear, aging, and power unavailability. It follows that these sources of uncertainties ...


Deep Neural Network For Complex Open-Water Wetland Mapping Using High-Resolution Worldview-3 And Airborne Lidar Data, Vitor S. Martins, Amy L. Kaleita, Brian K. Gelder, Gustavo W. Nagel, Daniel A. Maciel Dec 2020

Deep Neural Network For Complex Open-Water Wetland Mapping Using High-Resolution Worldview-3 And Airborne Lidar Data, Vitor S. Martins, Amy L. Kaleita, Brian K. Gelder, Gustavo W. Nagel, Daniel A. Maciel

Agricultural and Biosystems Engineering Publications

Wetland inventory maps are essential information for the conservation and management of natural wetland areas. The classification framework is crucial for successful mapping of complex wetlands, including the model selection, input variables and training procedures. In this context, deep neural network (DNN) is a powerful technique for remote sensing image classification, but this model application for wetland mapping has not been discussed in the previous literature, especially using commercial WorldView-3 data. This study developed a new framework for wetland mapping using DNN algorithm and WorldView-3 image in the Millrace Flats Wildlife Management Area, Iowa, USA. The study area has several ...


Development And Validation Of A Nonlinear Dynamic Model For Tuned Liquid Multiple Columns Dampers, Liang Cao, Yongqiang Gong, Filippo Ubertini, Hao Wu, An Chen, Simon Laflamme Nov 2020

Development And Validation Of A Nonlinear Dynamic Model For Tuned Liquid Multiple Columns Dampers, Liang Cao, Yongqiang Gong, Filippo Ubertini, Hao Wu, An Chen, Simon Laflamme

Civil, Construction and Environmental Engineering Publications

The tuned liquid column damper (TLCD), a passive damping device consisting of a large U-tube with oscillating liquid, has been shown to be effective at mitigating structural responses under natural hazards. Aside from their bandwidth-limited mitigation capabilities, a key limitation of TLCDs is in their large geometries that occupy large space often at prime locations. A solution is to implement multi-columned versions, termed tuned liquid multiple columns dampers (TLMCDs), which have the potential to be tuned to multiple frequencies and occupy less space by leveraging the multiple columns to allow fluid movement. However, mathematical models characterizing their dynamic behavior must ...


Finite-Strain Scale-Free Phase-Field Approach To Multivariant Martensitic Phase Transformations With Stress-Dependent Effective Thresholds, Hamed Babaei, Valery I. Levitas Nov 2020

Finite-Strain Scale-Free Phase-Field Approach To Multivariant Martensitic Phase Transformations With Stress-Dependent Effective Thresholds, Hamed Babaei, Valery I. Levitas

Aerospace Engineering Publications

A scale-free phase-field model for martensitic phase transformations (PTs) at finite strains is developed as an essential generalization of small-strain models in Levitas et al. (2004) and Idesman et al. (2005). The theory includes finite elastic and transformational strains and rotations as well as anisotropic and different elastic properties of phases. The gradient energy term is excluded, and the model is applicable for any scale greater than 100 nm. The model tracks finite-width interfaces between austenite and the mixture of martensitic variants only; volume fractions of martensitic variants are the internal variables rather than order parameters. The concept of the ...


Male Food Pantry Users Have Low Fruit, Vegetable, And Pulse Intakes Despite Interest In Food Nutrition Content, Donna M. Winham, Elizabeth D. Davitt Oct 2020

Male Food Pantry Users Have Low Fruit, Vegetable, And Pulse Intakes Despite Interest In Food Nutrition Content, Donna M. Winham, Elizabeth D. Davitt

Food Science and Human Nutrition Presentations, Posters and Proceedings

Background: Low-income men’s use of food pantries, and dietary intakes including pulses is understudies. Food pantries can help, but resource restriction limits ability to prepare meals. Convenience foods may not be optimal for nutrition. Pulses (beans, peas, lentils, and chickpeas) count as a vegetable and provide fiber, iron, folate, and other shortfall micronutrients. Increased pulse consumption could improve diet quality. Purpose: The study evaluated low-income men’s use dietary intakes including pulses. Methods: Men aged 25-64 years who utilized food pantry services were eligible. Men completed survey questions on demographics, nutrition assistance programs use, fruit/vegetable/fiber dietary intakes ...


Sea Surface Temperature Across The Subarctic North Pacific And Marginal Seas Through The Past 20,000 Years: A Paleoceanographic Synthesis, Catherine V. Davis, Sarah E. Myhre, Curtis Deutsch, Beth Caissie, Summer Praetorius, Marisa Borreggine, Robert Thunell Oct 2020

Sea Surface Temperature Across The Subarctic North Pacific And Marginal Seas Through The Past 20,000 Years: A Paleoceanographic Synthesis, Catherine V. Davis, Sarah E. Myhre, Curtis Deutsch, Beth Caissie, Summer Praetorius, Marisa Borreggine, Robert Thunell

Geological and Atmospheric Sciences Publications

Deglacial sea surface conditions in the subarctic North Pacific and marginal seas are the subject of increasing interest in paleoceanography. However, a cohesive picture of near-surface oceanography from which to compare inter and intra-regional variability through the last deglaciation is lacking. We present a synthesis of sea surface temperature covering the open North Pacific and its marginal seas, spanning the past 20 ka using proxy records from foraminiferal calcite (δ18O and Mg/Ca) and coccolithophore alkenones (Uk’37). Sea surface temperature proxies tend to be in agreement through the Holocene, though Uk’37 records are often interpreted as warmer than ...


Numerical Evaluation Of A Novel Passive Variable Friction Damper For Vibration Mitigation, Vahid Barzegar, Simon Laflamme, Austin Downey, Meng Li, Chao Hu Oct 2020

Numerical Evaluation Of A Novel Passive Variable Friction Damper For Vibration Mitigation, Vahid Barzegar, Simon Laflamme, Austin Downey, Meng Li, Chao Hu

Civil, Construction and Environmental Engineering Publications

This study assesses the performance of a novel passive variable friction damper (PVFD) at mitigating wind- and seismic-induced vibrations. The PVFD consists of two friction plates upon which a cam profile modulates the normal force as a function of its rotation. A unique feature of the PVFD is its customizable shape, yielding a customizable friction hysteresis. The objective of the study is to assess the benefits of crafting the friction behavior to satisfy motion criteria. This is done numerically on two example buildings: a 5-story structure subjected to seismic loads, and a 20-story structure subjected to non-simultaneous seismic and wind ...


Lack Of Consensus On An Aging Biology Paradigm? A Global Survey Reveals An Agreement To Disagree, And The Need For An Interdisciplinary Framework, Alan A. Cohen, Anne M. Bronikowski, Luigi Ferrucci, Et Al. Oct 2020

Lack Of Consensus On An Aging Biology Paradigm? A Global Survey Reveals An Agreement To Disagree, And The Need For An Interdisciplinary Framework, Alan A. Cohen, Anne M. Bronikowski, Luigi Ferrucci, Et Al.

Ecology, Evolution and Organismal Biology Publications

At a recent symposium on aging biology, a debate was held as to whether or not we know what biological aging is. Most of the participants were struck not only by the lack of consensus on this core question, but also on many basic tenets of the field. Accordingly, we undertook a systematic survey of our 71 participants on key questions that were raised during the debate and symposium, eliciting 37 responses. The results confirmed the impression from the symposium: there is marked disagreement on the most fundamental questions in the field, and little consensus on anything other than the ...


Substitutional And Interstitial Doping In Laco5 System For The Development Of Hard Magnetic Properties: A First Principles Study, Huseyin Ucar, Renu Choudhary, Durga Paudyal Sep 2020

Substitutional And Interstitial Doping In Laco5 System For The Development Of Hard Magnetic Properties: A First Principles Study, Huseyin Ucar, Renu Choudhary, Durga Paudyal

Ames Laboratory Accepted Manuscripts

We investigate here the changes in the electronic structure at the transition metal sites of the RE-TM5 structure (RE = Rare Earth, TM = Transition Metal) while doping the interstitial sites with nitrogen. LaCo5 compound is taken as the baseline compound owing to its critically needed intrinsic magnetic properties such as magneto-crystalline anisotropy energy (MAE) of ≈5 meV/fu [1] due to the contributions from the cobalt network. In addition, because of the lack of 4f electrons in lanthanum, complications originating from the treatment of the 4f localized electrons are absent in this compound; making it an ideal reference material to all ...


Three-Dimensional Profiling Of Oled By Laser Desorption Ionization-Mass Spectrometry Imaging, Andrew E. Paulson, Trevor T. Forsman, Young Jin Lee Sep 2020

Three-Dimensional Profiling Of Oled By Laser Desorption Ionization-Mass Spectrometry Imaging, Andrew E. Paulson, Trevor T. Forsman, Young Jin Lee

Chemistry Publications

Organic light emitting devices (OLEDs), especially in a screen display format, present unique and interesting substrates for Laser Desorption/Ionization - Mass Spectrometry Imaging (LDI-MSI) analysis. These devices contain many compounds that inherently absorb light energy and do not require an additional matrix to induce desorption and ionization. OLED screens have lateral features with dimensions that are tens of microns in magnitude and depth features that are tens to hundreds of nanometers thick. Monitoring the chemical composition of these features is essential, as contamination and degradation can impact device lifetime. This work demonstrates the capability of LDI-MSI to obtain lateral and ...


On Weak Flexibility In Planar Graphs, Bernard Lidicky, Tomáš Masarík, Kyle Murphy, Shira Zerbib Sep 2020

On Weak Flexibility In Planar Graphs, Bernard Lidicky, Tomáš Masarík, Kyle Murphy, Shira Zerbib

Mathematics Publications

Recently, Dvořák, Norin, and Postle introduced flexibility as an extension of list coloring on graphs [JGT 19']. In this new setting, each vertex v in some subset of V(G) has a request for a certain color r(v) in its list of colors L(v). The goal is to find an L coloring satisfying many, but not necessarily all, of the requests.

The main studied question is whether there exists a universal constant ϵ>0 such that any graph G in some graph class C satisfies at least ϵ proportion of the requests. More formally, for k>0 the ...


Trilingual Contributor Biographies For The Border Of Lights Reader: Bearing Witness To Genocide In The Dominican Republic, Megan Jeanette Myers, Edward Paulino Sep 2020

Trilingual Contributor Biographies For The Border Of Lights Reader: Bearing Witness To Genocide In The Dominican Republic, Megan Jeanette Myers, Edward Paulino

World Languages and Cultures Publications

No abstract provided.


Proof-Of-Concept Of High-Pressure Torrefaction For Improvement Of Pelletized Biomass Fuel Properties And Process Cost Reduction, Bartosz Matyjewicz, Kacper Świechowski, Jacek A. Koziel, Andrzej Białowiec Sep 2020

Proof-Of-Concept Of High-Pressure Torrefaction For Improvement Of Pelletized Biomass Fuel Properties And Process Cost Reduction, Bartosz Matyjewicz, Kacper Świechowski, Jacek A. Koziel, Andrzej Białowiec

Agricultural and Biosystems Engineering Publications

This paper provides a comprehensive description of the new approach to biomass torrefaction under high-pressure conditions. A new type of laboratory-scale high-pressure reactor was designed and built. The aim of the study was to compare the high-pressure torrefaction with conventional near atmospheric pressure torrefaction. Specifically, we investigated the torrefaction process influence on the fuel properties of wooden-pellet for two different pressure regimes up to 15 bar. All torrefaction processes were conducted at 300 °C, at 30 min of residence time. The initial analysis of the increased pressure impact on the torrefaction parameters: mass yields, energy densification ratio, energy yield, process ...


Complexity And Opportunities In Liquid Metal Surface Oxides, Andrew Martin, Chuanshen Du, Boyce Chang, Martin M. Thuo Sep 2020

Complexity And Opportunities In Liquid Metal Surface Oxides, Andrew Martin, Chuanshen Du, Boyce Chang, Martin M. Thuo

Materials Science and Engineering Publications

The ability of metal alloys to rapidly oxidize in ambient condition presents both a challenge and an opportunity. Herein, we focus on opportunities buried in the passivating oxide of liquid metal particles. Recently described sub-surface com-plexity and order present an opportunity to frustrate homogeneous nucleation hence enhanced undercooling. Plasticity of the underlying liquid metal surface offers an autonomously repairing sub-surface hence the lowest E0 component domi-nates the surface unless stoichiometrically limited. This plasticity provides an opportunity to synthesize organometallic polymers that in situ self-assemble to high aspect ratio nanomaterials. An induced surface speciation implies that under the appropriate oxidant tension ...


Fecal And Ruminal Microbiome Components Associated With Methane Emission In Beef Cattle, Bruno G. N. Andrade, Haithem Afli, Flavia A. Bressani, Rafael R. C. Cuadrat, Priscila S. N. De Oliveira, Gerson B. Mourão, Luiz L. Coutinho, James M. Reecy, James E. Koltes, Marcela Maria De Souza, Adhemar Zerlotini Neto, Sérgio Raposo De Medeiros, Alexandre Berndt, Julio C. P. Palhares, Luciana C. A. Regitano Sep 2020

Fecal And Ruminal Microbiome Components Associated With Methane Emission In Beef Cattle, Bruno G. N. Andrade, Haithem Afli, Flavia A. Bressani, Rafael R. C. Cuadrat, Priscila S. N. De Oliveira, Gerson B. Mourão, Luiz L. Coutinho, James M. Reecy, James E. Koltes, Marcela Maria De Souza, Adhemar Zerlotini Neto, Sérgio Raposo De Medeiros, Alexandre Berndt, Julio C. P. Palhares, Luciana C. A. Regitano

Animal Science Publications

Background: The impact of extreme changes in weather patterns in the economy and humanity welfare are some of the biggest challenges that our civilization is facing. From the anthropogenic activities that contribute to climate change, reducing the impact of farming activities is a priority, since its responsible for up to 18% of greenhouse gases linked to such activities. To this end, we tested if the ruminal and fecal microbiomes components of 52 Brazilian Nelore bulls, belonging to two experimental groups based on the feed intervention, conventional (A) and byproducts based diet (B), could be used as biomarkers for methane (CH ...


High Layer Uniformity Of 2-D Materials Surprisingly From Broad Features In Surface Electron Diffraction, Shen Chen, Michael Horn Von Hoegen, Patricia A. Thiel, Adam Kaminski, Benjamin Schrunk, Thanassis Speliotis, Edward Henry Conrad, Michael C. Tringides Sep 2020

High Layer Uniformity Of 2-D Materials Surprisingly From Broad Features In Surface Electron Diffraction, Shen Chen, Michael Horn Von Hoegen, Patricia A. Thiel, Adam Kaminski, Benjamin Schrunk, Thanassis Speliotis, Edward Henry Conrad, Michael C. Tringides

Chemistry Publications

Paradoxically a very broad diffraction background, named the Bell-Shaped-Component (BSC), has been established as a feature of graphene growth. Although the BSC has been present in the earlier literature it has been ignored. Recent diffraction studies as a function of electron energy have shown that the BSC is not related to scattering interference. The BSC is a very strong effect, but its origin is still unclear. Here, additional experiments are carried out as a function of temperature while monitoring changes in the intensity of different spots over the range that single-layer-graphene (SLG) grows. Quantitative fitting of the profiles shows that ...


Biodistribution Of Degradable Polyanhydride Particles In Aedes Aegypti Tissues, Edmund J. Norris, Adam S. Mullis, Yashdeep Phanse, Balaji Narasimhan, Joel R. Coats, Lyric C. Bartholomay Sep 2020

Biodistribution Of Degradable Polyanhydride Particles In Aedes Aegypti Tissues, Edmund J. Norris, Adam S. Mullis, Yashdeep Phanse, Balaji Narasimhan, Joel R. Coats, Lyric C. Bartholomay

Entomology Publications

Insecticide resistance poses a significant threat to the control of arthropods that transmit disease agents. Nanoparticle carriers offer exciting opportunities to expand the armamentarium of insecticides available for public health and other pests. Most chemical insecticides are delivered by contact or feeding, and from there must penetrate various biological membranes to reach target organs and kill the pest organism. Nanoparticles have been shown to improve bioactive compound navigation of such barriers in vertebrates, but have not been well-explored in arthropods. In this study, we explored the potential of polyanhydride micro- and nanoparticles (250 nm– 3 μm), labeled with rhodamine B ...


Ecology Of Porcine Astrovirus Type 3 In A Herd With Associated Neurologic Disease, Gaurav Rawal, Franco S. Matias Ferreyra, Nubia R. Macedo, Laura K. Bradner, Karen M. Harmon, Grant Allison, Daniel C.L. Linhares, Bailey L. Wilberts Sep 2020

Ecology Of Porcine Astrovirus Type 3 In A Herd With Associated Neurologic Disease, Gaurav Rawal, Franco S. Matias Ferreyra, Nubia R. Macedo, Laura K. Bradner, Karen M. Harmon, Grant Allison, Daniel C.L. Linhares, Bailey L. Wilberts

Veterinary Diagnostic and Production Animal Medicine Publications

Astroviruses (AstVs) cause disease in a wide variety of species. Porcine AstVs are highly genetically diverse and conventionally assigned to five genetic lineages (PoAstV1-5). Due to the increasing evidence that porcine astrovirus type 3 (PoAstV3) is a cause of encephalomyelitis in swine and to elucidate important ecologic characteristics, the infection dynamics and environmental distribution of PoAstV3 were investigated in a herd with PoAstV3-associated neurologic disease. Over a 22 week period, the frequency of PoAstV3 fecal shedding varied by pig and age. The peak detection by RT-qPCR of PoAstV3 on fecal swabs (95%; 61 of 64) occurred at 3 weeks of ...


Polyanhydride Nanoparticles Induce Low Inflammatory Dendritic Cell Activation Resulting In Cd8+ T Cell Memory And Delayed Tumor Progression, Ross Darling, Sujata Senapati, John Christiansen, Luman Liu, Amanda E. Ramer-Tait, Balaji Narasimhan, Michael J. Wannemeuhler Sep 2020

Polyanhydride Nanoparticles Induce Low Inflammatory Dendritic Cell Activation Resulting In Cd8+ T Cell Memory And Delayed Tumor Progression, Ross Darling, Sujata Senapati, John Christiansen, Luman Liu, Amanda E. Ramer-Tait, Balaji Narasimhan, Michael J. Wannemeuhler

Chemical and Biological Engineering Publications

Introduction: Adjuvants and immunotherapies designed to activate adaptive immunity to eliminate infectious disease and tumors have become an area of interest aimed at providing a safe and effective strategy to prevent or eliminate disease. Existing approaches would benefit from the development of immunization regimens capable of inducing efficacious cell-mediated immunity directed toward CD8+ T cell-specific antigens. This goal is critically dependent upon appropriate activation of antigen-presenting cells (APCs) most notably dendritic cells (DCs). In this regard, polyanhydride particles have been shown to be effectively internalized by APCs and induce activation.
Methods: Here, a prophylactic vaccine regimen designed as a single-dose ...


Water Quality Impacts Of Cover Crop Following A Drought, Matthew J. Helmers Sep 2020

Water Quality Impacts Of Cover Crop Following A Drought, Matthew J. Helmers

Integrated Crop Management News

The dry conditions throughout large areas of Iowa during 2020 reminds us of Iowa’s last significant drought in 2012 and the subsequent impacts on nitrate-N levels in subsurface drainage the following spring. This article will address concerns for water quality in drought conditions and opportunities to reduce nutrient losses from fields this fall.


Swine Disease Reporting System: Report #31, Giovani Trevisan, Daniel Linhares, Edison Magalhaes, Leticia Linhares, Bret Crim, Poonam Dubey, Kent Schwartz, Eric Burrough, Phillip Gauger, Pablo Pineryo, Christopher Siepker, Rodger Main, Mary Thurn, Paulo Lages, Cesar Corzo, Jerry Torrison, Rob Mcgaughey, Eric Herrman, Roman Pogranichniy, Rachel Palinski, Jamie Henningson, Jon Greseth, Travis Clement, Jane C. Hennings Sep 2020

Swine Disease Reporting System: Report #31, Giovani Trevisan, Daniel Linhares, Edison Magalhaes, Leticia Linhares, Bret Crim, Poonam Dubey, Kent Schwartz, Eric Burrough, Phillip Gauger, Pablo Pineryo, Christopher Siepker, Rodger Main, Mary Thurn, Paulo Lages, Cesar Corzo, Jerry Torrison, Rob Mcgaughey, Eric Herrman, Roman Pogranichniy, Rachel Palinski, Jamie Henningson, Jon Greseth, Travis Clement, Jane C. Hennings

Swine Disease Reporting System

SDRS includes multiple projects that aggregate data from participating veterinary diagnostic laboratories (VDLs) in the United States of America (USA), and reports the major findings to the swine industry. Our goal is to share information on endemic and emerging diseases affecting the swine population in the USA, assisting veterinarians and producers in making informed decisions on disease prevention, detection, and management. After aggregating information from participating VDLs and summarizing the data, we ask the input of our advisory group, which consists of veterinarians and producers across the USA swine industry. The intent is to provide an interpretation of the observed ...


Weak Binding To The A2re Rna Rigidifies Hnrnpa2 Rrms And Reduces Liquid–Liquid Phase Separation And Aggregation, Veronica H. Ryan, Scott Watters, Joshua Amaya, Balabhadra Khatiwada, Vincenzo Venditti, Mandar T. Naik, Nicolas L. Fawzi Sep 2020

Weak Binding To The A2re Rna Rigidifies Hnrnpa2 Rrms And Reduces Liquid–Liquid Phase Separation And Aggregation, Veronica H. Ryan, Scott Watters, Joshua Amaya, Balabhadra Khatiwada, Vincenzo Venditti, Mandar T. Naik, Nicolas L. Fawzi

Chemistry Publications

hnRNPA2 is a major component of mRNA transport granules in oligodendrocytes and neurons. However, the structural details of how hnRNPA2 binds the A2 recognition element (A2RE) and if this sequence stimulates granule formation by enhancing phase separation of hnRNPA2 has not yet been studied. Using solution NMR and biophysical studies, we find that each of the two individual RRMs retain the domain structure observed in complex with RNA but are not rigidly confined (i.e. they move independently) in solution in the absence of RNA. hnRNPA2 RRMs bind the minimal rA2RE11 weakly but at least, and most likely, two hnRNPA2 ...


Afoxolaner As A Treatment For A Novel Sarcoptes Scabiei Infestation In A Juvenile Potbelly Pig, Joe S. Smith, Darren J. Berger, Sarah E. Hoff, Jeba R. J. Jesudoss Chelladurai, Katy A. Martin, Matthew T. Brewer Sep 2020

Afoxolaner As A Treatment For A Novel Sarcoptes Scabiei Infestation In A Juvenile Potbelly Pig, Joe S. Smith, Darren J. Berger, Sarah E. Hoff, Jeba R. J. Jesudoss Chelladurai, Katy A. Martin, Matthew T. Brewer

Veterinary Pathology Publications and Papers

A 2 months old female Vietnamese potbellied pig presented to a veterinary teaching hospital with a referring complaint of pruritus. A human caretaker of the pig had recently been diagnosed with a Sarcoptes spp. dermatitis. Microscopic examination of the skin scrape samples and BLAST analysis confirmed the species of the mite as most closely related to Sarcoptes scabiei var. canis (AY493391). The pig was treated with afoxolaner as previous treatment with ivermectin was not efficacious. Recheck examinations and follow up revealed the pig to be non-pruritic and resolving. Afoxolaner may be a therapeutic option when treating Sarcoptes spp. infections in ...


In Situ Transmission Electron Microscopy Study Of Conductive Filament Formation In Copper Oxides, Xinchun Tian, Sanaz Yazdanparast, Geoff Brennecka, Xiaoli Tan Sep 2020

In Situ Transmission Electron Microscopy Study Of Conductive Filament Formation In Copper Oxides, Xinchun Tian, Sanaz Yazdanparast, Geoff Brennecka, Xiaoli Tan

Materials Science and Engineering Publications

The structural and electrical property changes of two types of copper oxides (CuO and Cu 2 O) under voltage bias are studied with in situ transmission electron microscopy (TEM). The phases of different materials are confirmed with electron diffraction. In both types of oxides, dynamic conductive path formation and dissolution are observed. The decrease in resistance of CuO film is found to be accompanied with the formation of Cu 4 O 3 phase where the electric field strength is highest. We also find that the decrease in resistivity of Cu 2 O film is more extensive and occurs in an ...


Whole Genome Sequence Data Provides Novel Insights Into The Genetic Architecture Of Meat Quality Traits In Beef, Joel D. Leal-Gutiérrez, Fernanda M. Rezende, James M. Reecy, Luke M. Kramer, Francisco Peñagaricano, Raluca G. Mateescu Sep 2020

Whole Genome Sequence Data Provides Novel Insights Into The Genetic Architecture Of Meat Quality Traits In Beef, Joel D. Leal-Gutiérrez, Fernanda M. Rezende, James M. Reecy, Luke M. Kramer, Francisco Peñagaricano, Raluca G. Mateescu

Animal Science Publications

Tenderness is a major quality attribute for fresh beef steaks in the United States, and meat quality traits in general are suitable candidates for genomic research. The objectives of the present analysis were to (1) perform genome-wide association (GWA) analysis for marbling, Warner-Bratzler shear force (WBSF), tenderness, and connective tissue using whole-genome data in an Angus population, (2) identify enriched pathways in each GWA analysis; (3) construct a protein–protein interaction network using the associated genes and (4) perform a μ-calpain proteolysis assessment for associated structural proteins. An Angus-sired population of 2,285 individuals was assessed. Animals were transported to ...


Effect Of Biochar Diet Supplementation On Chicken Broilers Performance, Nh3 And Odor Emissions And Meat Consumer Acceptance, Kajetan Kalus, Damian Konkol, Mariusz Korczyński, Jacek A. Koziel, Sebastian Opaliński Sep 2020

Effect Of Biochar Diet Supplementation On Chicken Broilers Performance, Nh3 And Odor Emissions And Meat Consumer Acceptance, Kajetan Kalus, Damian Konkol, Mariusz Korczyński, Jacek A. Koziel, Sebastian Opaliński

Agricultural and Biosystems Engineering Publications

The aim of this research was to evaluate the effect of biochar diet supplementation for broiler chickens on (1) ammonia and odor emissions from manure, (2) feed conversion ratio and daily weight gain, and (3) selected meat quality and sensory parameters. Beechwood biochar (BC, 2 and 4%) and BC–glycerin–aluminosilicates mix (BCM, 3 and 6%) were tested as dietary additives. A total of 750 chicken broilers (Ross 308) were divided into five dietary groups with five replicates per group (n = 5, 30 birds in each replicate) and reared on a littered floor for 5 weeks. Both feed additives showed ...


Synergy Of Thermochemical Treatment Of Dried Distillers Grains With Solubles With Bioethanol Production For Increased Sustainability And Profitability, Samuel O’Brien, Jacek A. Koziel, Chumki Banik, Andrzej Białowiec Sep 2020

Synergy Of Thermochemical Treatment Of Dried Distillers Grains With Solubles With Bioethanol Production For Increased Sustainability And Profitability, Samuel O’Brien, Jacek A. Koziel, Chumki Banik, Andrzej Białowiec

Agricultural and Biosystems Engineering Publications

The bioethanol industry continues improving sustainability, specifically focused on plant energy and GHG emission management. Dried distiller grains with solubles (DDGS) is a byproduct of ethanol fermentation and is used for animal feed. DDGS is a relatively low-value bulk product that decays, causes odor, and is challenging to manage. The aim of this research was to find an alternative, value-added-type concept for DDGS utilization. Specifically, we aimed to explore the techno-economic feasibility of torrefaction, i.e., a thermochemical treatment of DDGS requiring low energy input, less sophisticated equipment, and resulting in fuel-quality biochar. Therefore, we developed a research model that ...


Slot-Specific Priorities With Capacity Transfers, Michelle Avataneo, Bertan Turhan Sep 2020

Slot-Specific Priorities With Capacity Transfers, Michelle Avataneo, Bertan Turhan

Economics Working Papers

In many real-world matching applications, there are restrictions for institutions either on priorities of their slots or on the transferability of unfilled slots over others (or both). Motivated by the need in such real-life matching problems, this paper formulates a family of practical choice rules, slot-specific priorities with capacity transfers (SSPwCT). These practical rules invoke both slot-specific priorities structure and transferability of vacant slots. We show that the cumulative offer mechanism (COM) is stable, strategy-proof and respects improvements with regards to SSPwCT choice rules. Transferring the capacity of one more unfilled slot, while all else is constant, leads to strategy-proof ...


Comparing Uganda's Indigenous Soil Classification System With World Reference Base And Usda Soil Taxonomy To Predict Soil Productivity, Stewart Kyebogola, C. Lee Burras, Bradley A. Miller, Onesimus Semalulu, Russell S. Yost, Moses M. Tenywa, Andrew W. Lenssen, Prossy Kyomuhendo, Christopher Smith, Charles K. Luswata, Mwanjalolo J. Gilbert Majaliwa, Lance Goettsch, Carol J. Pierce Colfer, Robert E. Mazur Sep 2020

Comparing Uganda's Indigenous Soil Classification System With World Reference Base And Usda Soil Taxonomy To Predict Soil Productivity, Stewart Kyebogola, C. Lee Burras, Bradley A. Miller, Onesimus Semalulu, Russell S. Yost, Moses M. Tenywa, Andrew W. Lenssen, Prossy Kyomuhendo, Christopher Smith, Charles K. Luswata, Mwanjalolo J. Gilbert Majaliwa, Lance Goettsch, Carol J. Pierce Colfer, Robert E. Mazur

Agronomy Publications

This study examines three soil classification systems - Buganda, World Reference Base, and US Soil Taxonomy - in order to evaluate their relative strengths and feasibility for making linkages between them. Nine field sites and 16 pedons were considered across the soil landscapes of the Buganda catena. Each identified field pedon diagnostic horizons and characteristics were described and their soils analyzed using standard pedological techniques and measurements. To document the indigenous use of the Buganda classification system, interviews and discussions were held with farmer groups and local extension specialists. Using this local expertise, five local soil units were identified. We also identified ...