Digital Commons Network^™

Gasification Of Biomass, Coal, And Petroleum Coke At High Heating Rates And Elevated Pressure, Aaron D. Lewis

Theses and Dissertations

Gasification is a process used to convert any carbonaceous species through heterogeneous reaction to obtain the desired gaseous products of H2 and CO which are used to make chemicals, liquid transportation fuels, and power. Both pyrolysis and heterogeneous gasification occur in commercial entrained-flow gasifiers at pressures from 4 to 65 atm with local gas temperatures as high as 2000 °C. Many gasification studies have been performed at moderate temperatures, heating rates, and pressures. In this work, both pyrolysis and char gasification experiments were performed on coal, petroleum coke, and biomass at conditions pertinent to commercial entrained-flow gasifiers. Rapid biomass pyrolysis …

An Automatic Similarity Detection Engine Between Sacred Texts Using Text Mining And Similarity Measures, Salha Hassan Muhammed Qahl

Theses

Is there any similarity between the contexts of the Holy Bible and the Holy Quran, and can this be proven mathematically? The purpose of this research is using the Bible and the Quran as our corpus, we explore the performance of various feature extraction and machine learning techniques. The unstructured nature of text data adds an extra layer of complexity in the feature extraction task, and the inherently sparse nature of the corresponding data matrices makes text mining a distinctly difficult task. Among other things, We assess the difference between domain-based syntactic feature extraction and domain-free feature extraction, and then …

Estimation Of Forest Interior Condition In Southern Appalachian Mountains Using Airborne Lidar Data, Gang Shao, Songlin Fei, Buddhika D. Madurapperuma, Guofan Shao

Purdue GIS Day

Sustainability of forest ecosystem requires maintenance of forest cover and forest interior conditions. Sustaining forest cover supplies ecosystem goods and services and maintains biomass and carbon and nitrogen storage. Forest interior supports ecosystem functioning and provides particular physical and biological environments for plant and animal species that depend on a type of habitat isolated from non-forest land cover areas and prohibit the infestation of invasive species. Land cover maps derived from satellite imagery were broadly applied to assess spatial patterns of forest ecosystem and its dynamic. However, existing land cover maps at landscape scale are insufficient to provide information of …

Python Tool For Managing Hydrologic Soil Data, Ilyas Orazbek

Purdue GIS Day

As a water runoff crosses different kinds of soil, it collects chemicals from those lands. We've designed a python-based tool that estimates the amount of chemicals that get collected into the water stream. This could help us determine the impact of construction on the water quality of streams in the area.

Book Reviews: Monographic Musings, Deb Vaughn

Against the Grain

No abstract provided.

Great Lakes Basin Analysis Using L-Thia, Ibrahim D. Hinds, Larry Theller

Purdue GIS Day

The objective of this project is to provide a scientific estimate of the surface runoff and water quality within the Great Lakes watershed. A “Big Data” Long-term Hydrologic Impact (L-THIA) model was used for the analysis inside an ArcMAP user interface.

Development Of Simulation Of Short Rotation Woody Crops - Hybrid Populars In Swat Model, Tian Guo, Bernard Engel

Purdue GIS Day

The objective of this study is to establish growth parameters of hybrid poplar in SWAT model. Energy security and sustainable require a suite of biomass crops, including woody species. Selected hybrid poplar is expected as bioenergy feedstock for the capability of rapid growth. The quality of water and soils will be a concern when hybrid poplars are planted at wide geographic and latitudinal rang as a biomass feedstock. In this study, Soil and Water Assessment Tool (SWAT) modeling was employed to simulate the water and soil impacts of the hybrid poplar. In SWAT, fast growing tree growth parameters for hybrid …

Full Page Ads

Against the Grain

No abstract provided.

Infertmapper: A Mobile Map App For Fertilizer Setbacks, Akshay Kochar, Larry Theller

Purdue GIS Day

Goal: To develop a mobile app decision-support tool which facilitates compliance by livestock producers with the new fertilizer regulations. This tool provides a map which allows users to quickly know where the various setbacks are located in relation to a field being evaluated for a manure application or temporary storage (staging).

Creating Easy And Fun Gis Web Applications, Teresa L. Clark

Purdue GIS Day

Applications for GIS can be far more than just maps, spatial and network analysis, or geocoding. The tools that are available can be fun and useful for many different types of people with varying levels of experience. With the availability with ArcGIS Online Web AppBuilder a person without much experience in GIS can make a professional quality presentation that highlights different related attributes. This talk will showcase recent applications that I created with the ArcGIS Story Map Tour and Story Map Text and Legend templates for a Purdue University GIS class. These tools show the countrywide travels of an airline …

Publisher Profile -- Peerj

Against the Grain

No abstract provided.

Anthea C. Stratigos Profile

Against the Grain

No abstract provided.

And They Were There: Reports Of Meetings, Ramune Kubilius

Against the Grain

No abstract provided.

Raw Milk, Raw Power: States Of (Mis)Trust, Diana Mincyte

Publications and Research

In recent years, raw milk has emerged as one of the most contentious food commodities, considered a serious health risk by public health officials and a source of healing and nourishment by raw milk proponents. The purpose of this article is to explore the ways in which consumers construct and experience trust in food that is often procured in informal markets. Because the image of an overreaching, exploitative government features prominently in popular narratives surrounding raw milk consumption, this article is explicitly concerned with the role of the state in public food debates. Drawing on two complementary empirical cases of …

Gilles De La Rochefoucauld Profile

Against the Grain

No abstract provided.

Collecting To The Core: Evolution For Everyone, Anne Doherty, Louise F. Deis

Against the Grain

No abstract provided.

The Ucla Libraries Affordable Course Materials Initiative: Expanding Access, Use, And Affordability Of Course Materials, Sharon E. Farb, Todd Grappone

Against the Grain

No abstract provided.

Functional Approach To Simulating Short Rotation Woody Crops In Process Based Models, Tian Guo, Bernard Engel

Purdue GIS Day

Short rotation woody crops (SRWC) such as hybrid poplar have great potential as a biofuel feedstock. Biomass yields and yield stability at potential sites are important considerations when such SRWC is widely planted. To simulate poplar growth accurately, the functional components and parameters of hybrid poplar Tristis #1 (Populus balsamifera L. × P.tristis Fisch) were determined, and related algorithms improved in ALMANAC and SWAT based on improved simulation of leaf area and plant biomass as well as biomass partitioning. The improved tree growth simulation was applied to hybrid poplar plots in Wisconsin, and the modeled biomass yield, and LAI were …

Resaca Ecosystem Development: Colonization And Succession Of The Macroinvertebrate Community, Leah M. Mcintosh

Theses and Dissertations - UTB/UTPA

Freshwater wetlands in the Lower Rio Grande Valley of Texas are locally known as resacas. Resacas are remnants of the Rio Grande River channel that were cut off by sedimentation and erosion of river banks. Many are maintained as permanent wetlands through intermittent water pumping from the river; and provide valuable habitat for fish, invertebrates, migratory birds and a diverse floral community in the semi-arid environment of South Texas. Three resacas in different stages of ecosystem development were studied, including one from day zero after re-flooding. The objectives were to document the colonization process of the re-flooded resaca and the …

Gingival Biotype In Relation To Incisors’ Inclination And Position, Khalid H. Zawawi, Mohammad S. Al-Zahrani

Saudi Medical Journal

OBJECTIVES: To study the association between gingival biotypes and inclination and position of the maxillary and mandibular incisors. METHODS: This cross-sectional study included 142 consecutive orthodontic patients (64 males and 78 females) who were seeking orthodontic treatment at the Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia from February 2013 to January 2014. Gingival biotype was assessed independently for the maxillary and mandibular central incisors using the transparency of periodontal probe method. Maxillary and mandibular incisors’ inclination and position were measured using cephalometric analysis. RESULTS: The mean age was 23.56 (±2.55) years. The prevalence of thin gingival biotype was …

The Health Equity Promotion Model: Reconceptualization Of Lesbian, Gay, Bisexual, And Transgender (Lgbt) Health Disparities, Karen I. Fredriksen-Goldsen, Jane M. Simoni, Hyun-Jun Kim, Keren Lehavot, Karina L. Walters, Joyce Yang, Charles P. Hoy-Ellis, Anna M. Muraco

Sociology Faculty Works

National health initiatives emphasize the importance of eliminating health disparities among historically disadvantaged populations. Yet, few studies have examined the range of health outcomes among lesbian, gay, bisexual, and transgender (LGBT) people. To stimulate more inclusive research in the area, we present the Health Equity Promotion Model—a framework oriented toward LGBT people reaching their full mental and physical health potential that considers both positive and adverse health-related circumstances. The model highlights (a) heterogeneity and intersectionality within LGBT communities; (b) the influence of structural and environmental context; and (c) both health-promoting and adverse pathways that encompass behavioral, social, psychological, and biological …

Arkansas Animal Science Department Report 2014, David L. Kreider, Paul Beck

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

A Coherent Method For The Detection And Parameter Estimation Of Continuous Gravitational Wave Signals Using A Pulsar Timing Array, Yan Wang, Soumya D. Mohanty, F. A. Jenet

Physics & Astronomy Faculty Publications

The use of a high precision pulsar timing array is a promising approach to detecting gravitational waves in the very low frequency regime (10-6-10-9 Hz) that is complementary to ground-based efforts (e.g., LIGO, Virgo) at high frequencies (∼10-103 Hz) and space-based ones (e.g., LISA) at low frequencies (10-4-10-1 Hz). One of the target sources for pulsar timing arrays is individual supermassive black hole binaries which are expected to form in galactic mergers. In this paper, a likelihood-based method for detection and parameter estimation is presented for a monochromatic continuous gravitational wave signal emitted by such a source. The so-called pulsar …

Plant Defense Against Aphids: The Pad4 Signalling Nexus, Joe Louis, Jyoti Shah

Department of Entomology: Faculty Publications

In Arabidopsis thaliana, PHYTOALEXIN DEFICIENT 4 (PAD4) functions as a key player in modulating defense against the phloem sap-feeding aphid Myzus persicae (Sülzer), more commonly known as the green peach aphid (GPA), an important pest of a wide variety of plants. PAD4 controls antibiosis and antixenosis against the GPA. In addition, PAD4 deters aphid feeding from sieve elements on Arabidopsis. In the past few years, substantial progress has been made in dissecting the role of PAD4 and its interaction with other signalling components in limiting aphid infestation. Several key genes/mechanisms involved in providing aphid resistance/susceptibility in Arabidopsis regulate the …

A Game-Theoretic Analysis Of The Nuclear Non-Proliferation Treaty, Peter Revesz

School of Computing: Conference and Workshop Papers

Although nuclear non-proliferation is an almost universal human desire, in practice, the negotiated treaties appear unable to prevent the steady growth of the number of states that have nuclear weapons. We propose a computational model for understanding the complex issues behind nuclear arms negotiations, the motivations of various states to enter a nuclear weapons program and the ways to diffuse crisis situations.

Estimating The Flight Path Of Moving Objects Based On Acceleration Data, Peter Revesz

School of Computing: Conference and Workshop Papers

Inertial navigation is the problem of estimating the flight path of a moving object based on only acceleration measurements. This paper describes and compares two approaches for inertial navigation. Both approaches estimate the flight path of the moving object using cubic spline interpolation, but they find the coefficients of the cubic spline pieces by different methods. The first approach uses a tridiagonal matrix, while the second approach uses recurrence equations. They also require different boundary conditions. While both approaches work in O(n) time where n is the number of given acceleration measurements, the recurrence equation-based method can be easier updated …

Chlorovirus Atcv-1 Is Part Of The Human Oropharyngeal Virome And Is Associated With Changes In Cognitive Functions In Humans And Mice, Robert H. Yolken, Lorraine Jones-Brando, David D. Dunigan, Geetha Kannan, Faith Dickerson, Emily Severance, Sarven Sabunciyan, C. Conover Talbot Jr., Emese Prandovszky, James R. Gurnon, Irina V. Agarkova, Flora Leister, Kristin L. Gressitt, Ou Chen, Bryan Deuber, Fangrui Ma, Mikhail V. Pletnikov, James L. Van Etten

James Van Etten Publications

Chloroviruses (family Phycodnaviridae) are large DNA viruses known to infect certain eukaryotic green algae and have not been previously shown to infect humans or to be part of the human virome. We unexpectedly found sequences homologous to the chlorovirus Acanthocystis turfacea chlorella virus 1 (ATCV-1) in a metagenomic analysis of DNA extracted from human oropharyngeal samples. These samples were obtained by throat swabs of adults without a psychiatric disorder or serious physical illness who were participating in a study that included measures of cognitive functioning. The presence of ATCV-1 DNA was confirmed by quantitative PCR with ATCV-1 DNA being …

Eight Legged Encounters, Eileen A. Hebets

Eileen Hebets Publications

This program was funded in part by a National Science Foundation grant (DRL–1241482 to EAH). Material was developed in collaboration with Marie- Claire Chelini, Jessie Rose Storz, Cody Storz, and Malcolm Rosenthal. Steven Schwartz, Jason Stafstrom, Kathy French, Priscilla Grew, and Judy Diamond were all extremely helpful in grant writing, facilitating the first live event, and/or discussions. Pawl Tisdale (artist) was phenomenal to work with on all aspects of the project!

TABLE OF CONTENTS

CLASSIFICATION & TAXONOMY STATIONS
I. WHAT IS AN ARTHROPOD? page 4 a. The goal of this station is to introduce the audience to some basic information …

Discovery Of A 240 Million Year Old Nematode Parasite Egg In A Cynodont Coprolite Sheds Light On The Early Origin Of Pinworms In Vertebrates, Jean-Pierre Hugot, Scott Gardner, Victor Borba, Priscilla Araujo, Daniela Leles, Átila Da-Rosa, Juliana Dutra, Luis Fernando Ferreira, Adauto Araújo

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Background: We report the discovery of a nematode parasite egg (Nemata: Oxyurida) from a coprolite closely associated with the remains of several species of Cynodontia, dated to 240 million years old. This finding is particularly significant because this is the oldest record of an oxyurid nematode yet discovered, and because the cynodonts are considered a stem-group of the mammals.

Methods: We extracted material from a fully mineralized coprolite by both scraping the surface, and removing fragments from its interior with clean dental instruments used a single time. A single drop of glycerol from a new vial was added as a …

Erection Of The Haploporid Genus Litosaccus N. G. And Its Phylogenetic Relationship Within The Haploporidae Nicoll, 1914, Michael J. Andres, Eric E. Pulis, Thomas A. Cribb, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Litosaccus n. g. is erected for Paralecithobotrys brisbanensis Martin, 1974 n. comb. for which an amended description is given. The new genus is morphologically similar to the haploporine Lecithobotrys Looss, 1902 but with a more elongate and cylindrical body; an infundibuliform oral sucker; a thin-walled hermaphroditic sac; a shallow genital atrium; and unequal, cylindrical, and elongated caeca. It also resembles Pseudolecithobotrys Blasco-Costa, Gibson, Balbuena, Raga & Kostadinova, 2009, but the only member of that genus has a hermaphroditic sac that is twice the length of the ventral sucker, a hermaphroditic duct with intensely staining cuboidal cells, an elongate testis, and …