cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effects of Urbanization on Stream Flashiness in the I-85 Corridor of the Southeastern Piedmont
Creators: name: Koslofsky, Eli
Publisher: name: Georgia State University
Year: 2016

description: The metro areas of the southeastern Piedmont are rapidly expanding, bringing changes to the hydrology of the watersheds within them. Increased urbanization can have significant effects on stream hydrology within a watershed, including large fluctuations of flow in streams referred to as ?stream flashiness?. Increased stream flashiness has numerous consequences, including water quality degradation, flooding, and destruction of aquatic habitats. This thesis quantifies stream flashiness in urban and rural streams and investigates the relationship between flashiness and watershed land cover, particularly the amount and spatial distribution of impervious surfaces. Results show a strong relationship between urbanization and peak flows, but indicate that the underlying geology and other natural/anthropogenic factors complicate the relationship between R-B index and percent impervious surface cover. Results also indicate regional patterns within the southeastern Piedmont, most notably flashier streams in North Carolina compared to Georgia.
The Evaluation of Measuring Stream Channel Morphology using Unmanned Aerial System-Based Structure-From-Motion Photogrammetry
Creators: name: Ballow, William
Publisher: name: Georgia State University
Year: 2016

description: As part of a collaborative project at a stream segment reach on Proctor Creek in Atlanta, GA, UAV-based SfM photogrammetry was tested as a method for collecting fluvial topographic data relative to traditional USGS total station surveying methods. According to the USGS method, 11 transects were surveyed, and imagery was collected via a UAV to create a SfM DEM. The resulting DEM was incomplete but showed promise for the SfM method. Two additional stream segments were chosen in the Atlanta area, the first along SFPC in DHCL and the second along NFPC near Buford Hwy. For each site 11 transects were surveyed along with submerged GCPs so that the SfM DEMs could be compared to the surveyed data. The BW and BD values were collected from the TS transects and the DEM transects and compared according to the percent difference between the two. For SFPC, the average percent difference values for BW and BD were, respectively, 15.9 and 26.0 with standard deviations of 15.7 and 18.0. For NFPC, the BW and BD average percent difference values were 6.8 and 7.5 with standard deviations of 3.9 and 5.9. The GCPs were also compared for each site using linear regressions. There was no strong correlation for SFPC (R2 = 0.31 and p-value > 0.05), but there was a strong relationship indicated for NFPC (R2 = 0.78 and p-value < 0.05). While the results of this study are variable, the results do indicate promise for future work on this emerging method.
Ontology of Geological Mapping
Creators: name: Boyd, Tyler
Publisher: name: Georgia State University
Year: 2016

description: In this thesis, an ontology for the geological mapping domain is constructed using the Prot‚g‚ ontology editor. The Geological Mapping ontology is developed using terms and relationships, and their properties, as they relate to creating a geologic map. This vocabulary is semantically modeled in the ontology using Web Ontology Language (OWL). The purpose of this thesis is to exemplify how an ontology can be designed and developed to represent geological knowledge as it relates to mapping.
II. Teil Zeitungs-Interview „Umarme Dein Leiden! – Entdecke die Botschaft für Dich!“
Creators: name: Schuchardt, Erika
Publisher: name: Gelsenkirchen : Akad. für Esoterik
Year: 2010
Subjects: subject: Dewey Decimal Classification::100 | Philosophie

description: [no abstract available]
III. Teil Zeitungs-Interview „Dieter Wiergowski: „Bewundernswert – in der Kirche mehr Zusammenhalt als in der spirituellen Bewegung“
Creators: name: Schuchardt, Erika
Publisher: name: Gelsenkirchen : Akad. für Esoterik
Year: 2010
Subjects: subject: Dewey Decimal Classification::100 | Philosophie

description: [no abstract available]
Deciphering Phosphorus and Aluminum Physiochemical Associations in Paleolake Sediments of Long Pond, GA
Creators: name: Tidwell, Christopher
Publisher: name: Georgia State University
Year: 2016

description: This study focuses on Long Pond, a groundwater-fed sinkhole lake in Georgia, which does not exhibit any evidence of eutrophication drivers despite high concentrations of sedimentary phosphorus (P) (> 3000 mg/kg P) in the recent sediment record. Chemical analyses have shown a strong correlation (r2>0.99) between P and aluminum (Al) throughout the core, suggesting Al plays a significant role in sequestering most of the P, and limiting its availability to phytoplankton, thereby inhibiting eutrophication. The purpose of this study is to decipher P and Al physicochemical associations in the sediments. After the samples were fractionated into amorphous and non-amorphous phases, the correlation was maintained in both phases. Evidence suggests two modes of Al-P associations: a sorption and/or co-precipitation occurring mostly in the amorphous phase and a mode whereby Al and P are being inputted to the lake bound together.
Assessing options for poppers policy in Canada : A call to action for evidence-based policy reform
Creators: name: Schwartz, Cameron
name: Card, Kiffer
name: Elliott, Richard
name: Hollett, Kevin
name: Jollimore, Jody
name: Pasic, Andrea
name: Smiley, Sandra
name: Tooley, Len
name: Pruden, Harlan
name: Knight, Rod E.
Publisher: name: The University of British Columbia
Year: 2025

description: When inhaled, poppers products (alkyl nitrites) relax smooth muscle tissue and produce a pleasant “rush.” As such, they are used by some gay, bisexual, and other men who have sex with men (sexual minority men), including during anal intercourse. In 2013, Health Canada cracked down on poppers sales by introducing threats of fines and imprisonment and seizing poppers in stores and at the border. While no new legislation was introduced, Health Canada takes the position that poppers fall within the definition of a “drug” under the Food and Drugs Act because they “modify organic function” in humans. This crackdown has not prevented poppers use and has added harms related to an illicit and unregulated drug supply. In an effort to reduce harms and advance more equitable and public health-centred approaches to poppers drug policy, we discuss how a series of anticipated outcomes (accessibility, equity, consumer safety, commercial feasibility, and stigma) relate to the following alternative approaches to regulation: (1) poppers as a prescription medicine; (2) poppers as a non-prescription drug (likely accessible ‘over-thecounter’); (3) poppers as a consumer product rather than just a medicine; and (4) ending the crackdown without legislative changes. To improve health equity and reduce harms among sexual minority men in a way that is politically and commercially feasible, we recommend the last approach—ending the crackdown without legislative changes—including ceasing the confiscation of poppers products in stores and at the border.
Land Management Controls on Hydraulic Conductivity of an Urban Farm in Atlanta, GA
Creators: name: Hinton, Hayden
Publisher: name: Georgia State University
Year: 2016

description: Increasing urbanization is often accompanied by problematic changes in watershed hydrology. Decreasing surface permeability can lead to increased overland flow volumes, which may spread surficial contaminants and increase the strain on municipal stormwater infrastructure. This study examines a mixed-use property in the Proctor Creek watershed in Atlanta, Georgia, to better understand how land-management practices influence soil overland flow potential. Field saturated hydraulic conductivity (Kfs) measurements were collected from soils 1) subjected to compaction, 2) in urban agricultural use, and 3) under common lawn maintenance. Mean values were 9.1E-7 cm/s, 2.2E-4 cm/s, and 9.0E-6 cm/s respectively. Measurements were collected in-situ with the use of the Aardvark constant-head permeameter. Statistical analyses indicated a substantial difference in Kfs based on land-management practices and that urban farming can increase soil Kfs and limit overland flow. Additional analysis revealed no significant difference in grain-size distributions suggesting land-management practices controlled Kfs, not soil texture.
Follow-up visits after a concussion in the pediatric population : An integrative review
Creators: name: Ramsay, Scott
name: Dahinten, V. Susan
name: Ranger, Manon
name: Babul, Shelina
Publisher: name: IOS Press
Year: 2023

description: BACKGROUND: Concussions are a significant health issue for children and youth. After a concussion diagnosis, follow-up visits with a health care provider are important for reassessment, continued management, and further education. OBJECTIVE: This review aimed to synthesize and analyse the current state of the literature on follow-up visits of children with a concussive injury and examine the factors associated with follow-up visits. METHODS: An integrative review was conducted based on Whittemore and Knafl’s framework. Databases searched included PubMed, MEDLINE, CINAHL, PsycINFO, and Google Scholar. RESULTS: Twenty-four articles were reviewed. We identified follow-up visit rates, timing to a first follow-up visit, and factors associated with follow-up visits as common themes. Follow-up visit rates ranged widely, from 13.2 to 99.5%, but time to the first follow-up visit was only reported in eight studies. Three types of factors were associated with attending a follow-up visit: injury-related factors, individual factors, and health service factors. CONCLUSION: Concussed children and youth have varying rates of follow-up care after an initial concussion diagnosis, with little known about the timing of this visit. Diverse factors are associated with the first follow-up visit. Further research on follow-up visits after a concussion in this population is warranted.
Spatial Analysis of Environmental Factors Affecting Endangered and Invasive Fish Species on the Belize Barrier Reef
Creators: name: Acker, Adam
Publisher: name: Georgia State University
Year: 2016

description: The second largest reef in the world is experiencing a dramatic change in its environment with continued development and an influx in tourism having a direct impact on the physical and ecological balance of the reef. The introduction of hazardous materials and practices have contributed to reef degradation through excess sedimentation, overfishing, and increased shipping and have the ability to influence some of the reef?s most endangered inhabitants. A spatial examination using multiple variables impacting changes in certain populations of endangered and invasive fish species are studied, incorporating integrated species abundance and sighting data as well as potential environmental threats to aim to understand the trends and correlations between Belize?s recent spike in development, and the implications on its barrier reef.
Supplementary document for Single infrared light pulses induce excitatory and inhibitory neuromodulation - 5583502.pdf
Creators: name: Zhu, Xuedong
name: Lin, Jen-Wei
name: Turnali, Ahmet
name: Sander, Michelle
Publisher: name: Optica Publishing Group
Year: 2021
Subjects: Uncategorized

description: Supplementary Material
Tailorable Energy Absorbing Cellular Materials via Sintering of Dry Powder Printed Hollow Glass Microspheres
Creators: name: Wereley, Norman
name: Park, Jungjin
name: Howard, John
name: DeMay, Matthew
name: Edery, Avi
Publisher: name: Digital Repository at the University of Maryland
Year: 2024
Subjects: Hollow Glass Microspheres
Glass Foam
Sintering
Energy Absorption

description: This article examines amorphous glass-based foams as lightweight core materials for crash-resistant structures that offer tailorable energy absorption capabilities. Hollow glass microspheres (HGMs) of different densities are layered using dry powder printing (DPP), an additive manufacturing process, and subsequently sintered to consolidate these microspheres into a cellular foam structure. The tailoring of energy absorption is achieved in these foams by layering hollow microspheres with different densities and different thickness ratios of the layers. The mechanical response to quasi-static uniaxial compression of the bilayer foams is also investigated. Bilayer samples exhibit a distinctive two-step stress-strain profile that includes first and second plateau stress, as opposed to a single constant density which does not. The strain at which the second plateau occurs can be tailored by adjusting the thickness ratio of the two layers. The resulting stress-strain profiles demonstrate tailorable energy absorption. Tailorability is found to be more significant if the density values of each layer differ greatly. For comparison, bilayer samples are fabricated using epoxy at the interface instead of the co- sintering process. Epoxy-bonded samples show a different mechanical response from the co-sintered sample with a different stress-strain profile. Designing the bilayer foams enables tailoring of the stress-strain profile, so that energy-absorption requirements can be met for a specific impact condition. The implementation of these materials for energy absorption, crashworthiness, and buoyancy applications will be discussed.
Adaptive magnetorheological fluid energy absorption systems: a review
Creators: name: Bai, Xianxu 'Frank'
name: Zhang, Xinchi
name: Choi, Young
name: Shou, Mengje
name: Zhu, Guanghong
name: Wereey, Norman M.
Publisher: name: Institute of Physics
Year: 2024
Subjects: Magnetorheology
Magnetorheological Fluids
Energy Absorbers
Impact
Crashworthiness
Shock Mitigation
Semi-active Control
Soft-Landing

description: In the last two decades, magnetorheological (MR) fluids have attracted extensive attention since they can rapidly and continuously control their rheological characteristics by adjusting an external magnetic field. Because of this feature, MR fluids have been applied to various engineering systems. This paper specifically investigates the application of MR fluids in shock mitigation control systems from the aspects of three key technical components: the basic structural design of MR fluid-based energy absorbers (MREAs), the analytical and dynamical model of MREAs, and the control method of adaptive MR shock mitigation control systems. The current status of MR technology in shock mitigation control is presented and analyzed. Firstly, the fundamental mechanical analysis of MREAs is carried out, followed by the introduction of typical MREA configurations. Based on mechanical analysis of MREAs, the structural optimization of MREAs used in shock mitigation control is discussed. The optimization methods are given from perspectives of the design of piston structures, the layout of electromagnetic coil, and the MR fluid gap. Secondly, the methods of damper modeling for MREAs are presented with and without consideration of the inertia effect. Then both the modeling methods and their characteristics are introduced for representative parametric dynamic models, semi-empirical dynamic models, and non-parametric dynamic models. Finally, the control objectives and requirements of the shock mitigation control systems are analyzed, and the current competitive methods for the ideal ‘soft-landing’ control objectives are reviewed. The typical control methods of MR shock mitigation control systems are discussed, and based on this the evaluation indicators of the control performance are summarized.
An Evaluation of Late Holocene Sea Level Rise and Anthropogenic Impacts; Jones Narrows Marsh, Chatham County, Georgia
Creators: name: Hughes, Jessie
Publisher: name: Georgia State University
Year: 2016

description: A detailed record of the Late Holocene sea level rise and landscape evolution that has taken place on the Georgia coast is contained within the sedimentary stratigraphy of its salt marsh depositional basins. Global relative sea level (RSL) has risen during the Late Holocene, and the rate of rise has accelerated during the Anthropocene. Jones Narrows marsh stratigraphy and radiocarbon analysis indicate increasing rates of RSL rise for the late Holocene on the Northern Atlantic Coast of Georgia, while FPXRF analysis of the marsh sediments facilitates a chemostratigraphic study of Jones Narrows salt marsh deposition and landscape evolution. Sedimentation and hydrology at the site have been heavily influenced by recent local anthropogenic impacts, which are examined through stratigraphic and spatial methods.
Idalus multicolor
Creators: name: Vincent, Benoît
name: Laguerre, Michel
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Erebidae
Idalus
Idalus multicolor

description: Idalus multicolor (Rothschild, 1909)
Automolis multicolor Rothschild, 1909c: 224.
TYPE LOCALITY. — Guyana, [Potaro-Siparuni], Potaro.
TYPE SPECIMEN. — Lectotype male designated by Watson (1975: 79) (BMNH).
description: Published as part of Vincent, Benoît & Laguerre, Michel, 2014, Catalogue of the Neotropical Arctiini Leach, [1815] (except Ctenuchina Kirby, 1837 and Euchromiina Butler, 1876) (Insecta, Lepidoptera, Erebidae, Arctiinae), pp. 137-533 in Zoosystema 36 (2) on page 158, DOI: 10.5252/z2014n2a1, http://zenodo.org/record/5395344
Land Cover Change Impacts on Multidecadal Streamflow in Metropolitan Atlanta GA, USA
Creators: name: Hill, T.
Publisher: name: Georgia State University
Year: 2017

description: Urbanization has been associated with the degradation of streams, and a consequence of forest to urban land transition is a change in streamflow. Therefore, the purpose of this thesis is to examine the impacts of land-cover change in ten different watersheds in the rapidly urbanizing Atlanta, GA USA metropolitan area. Streamflow and precipitation data for a 30-year period (1986-2016) were analyzed in conjunction with land cover data from 1992, 2001, and 2011. Big Creek and Suwanee Creek experienced the most urbanization and increases (20%) in streamflow and runoff, and high flow (>95th percentile of flow) days doubled and increased 85%, respectively. Precipitation-adjusted streamflow for Peachtree Creek and Flint River decreased about 17%. Runoff ratios for South River were the highest among all watersheds, even the Etowah River, which remained moderately forested and had the most precipitation and slope.
Biodegradation of Petroleum Hydrocarbons in Contaminated Coastal Environments, Nigeria
Creators: name: ONIBIYO, SAMSON
Publisher: name: Georgia State University
Year: 2016

description: To compare the degree of biodegradation of petroleum hydrocarbons in sediments from Ikarama and Okwori in the Niger delta, Nigeria, concentrations of n-alkanes and polycyclic aromatic hydrocarbons in the sediments were measured. Analysis was conducted with gas chromatography using mass spectrometry detector. While the decrease in concentrations of n-alkanes and polycyclic aromatic hydrocarbons confirmed the process of biodegradation in the sediments it was not solely fit to substantiate the degree of biodegradation in the sediments. Hence the percentage proportion of n-alkanes and polycyclic aromatic hydrocarbons was used. The degree of biodegradation of n-alkanes in both Okwori and Ikarama was almost similar. However, it was observed that polycyclic aromatic hydrocarbons were biodegraded in Okwori sediments than Ikarama sediments and this indicates the degree of biodegradation of petroleum hydrocarbons impacted sediments in Okwori is greater than that of Ikarama.
A Study of Mineral Impurities within the Georgia Kaolins
Creators: name: Gardner, Daniel
Publisher: name: Georgia State University
Year: 2016

description: The mining industry located along the fall line region of central Georgia has been and remains as one of the largest global exporters of the clay mineral kaolinite. Among the kaolin deposits in that region, the Cretaceous Buffalo Creek formation and the Eocene Jeffersonville member contain the most commercially viable kaolin to extract and process for resale. The minerals of the sand and silt fractions of these kaolin units were separated via dense liquid separation and analyzed for comparison by X-ray diffraction, scanning electron microscopy, and elemental analysis. The dense fractions are enriched in select heavy minerals (zircon and rutile) and trace elements (rare earth).  These elemental enrichments and the differences in the mineral maturity of these gangue (grit) fractions suggest differences in the provenance of the gangue minerals between these two different kaolins.
Investigating the Effect of Aluminum Substitution on the Physical and Chemical Properties of Ferrihydrite
Creators: name: Ajewole, Richard
Publisher: name: Georgia State University
Year: 2016

description: This thesis investigated the impact of aluminum (Al) substitution in ferrihydrite (FH) on both its chemical and physical properties. Al was coprecipitated with FH under controlled hydrolysis conditions to yield various % mol substitutions. Sulfate adsorption was measured across pHs to examine any changes in surface reactivity. The samples? morphology, specific surface areas (SSAs), crystallinity, and phase transformation upon heating were evaluated and parameterized to allow conclusions on the role of Al on the physical properties. Sulfate sorption diminished across pHs for all Al saturation levels. X-ray Diffraction revealed goethite (GT) presence was negatively influenced by Al. The SSAs of samples increased non-linearly with increasing % mol Al, indicating a decreasing particle size with more Al content. Transmission Electron Microscopy micrographs showed the FH nanoparticles transformed to acicular/blocky laths of GT crystals and lenticular/platy hematite (HM) crystals with occasional grainy appearance at both room temperature and upon active heating. The phase transformation alongside the derived aspect ratios (length/width) of the GT crystals were retarded by the Al substitution.
Surface Charge Characterization of Anatase and Rutile using Flow Adsorption Microcalorimetry
Creators: name: Hawkins, Tyler
Publisher: name: Georgia State University
Year: 2016

description: Titanium dioxide (TiO2) attracts extensive attention due to its widespread technological and environmental applications. This study seeks to investigate the surface charging behavior of the two TiO2 polymorphs, anatase and rutile, using Flow Adsorption Microcalorimetry (FAMC). FAMC allows direct quantitative measurement of the heat of a surface reaction; these calorimetric heats are directly proportional to the surface charge. Determining the magnitude of positive and negative charges at the surface over a range of pHs allows for the determination of the point of zero net charge (PZNC) via a unique calorimetric method that removes many of the shortcomings related to the other analytical techniques used for such measurements.
Geographic Variation of Radon Gas Concentrations in Relationship to Housing Characteristics in Dekalb County, Georgia
Creators: name: Neal, Fredrick
Publisher: name: Georgia State University
Year: 2016

description: Radon (RN-222), naturally released from underground, is the second leading cause of lung cancer for at-risk groups after smoking, and the leading cause of lung cancer. This research aims to investigate the relationship between housing characteristics and indoor radon levels. Indoor radon data (1993 ? 2013) were obtained from the DeKalb County Board of Health alongside housing characteristics sourced from the DeKalb County Tax Assessor. Chi-square tests, logistic regression, and bivariate analysis were used to examine the housing risk factors. The results indicate a correlation between high radon concentrations, and homes constructed of brick, with a basement foundation and centralized heating and air systems. Analysis of geological data revealed no significant connection to elevated radon levels.
Idalus luteorosea
Creators: name: Vincent, Benoît
name: Laguerre, Michel
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Erebidae
Idalus
Idalus luteorosea

description: Idalus luteorosea (Rothschild, 1909)
Automolis luteorosea Rothschild, 1909a: 40.
TYPE LOCALITY. — Guyana, Christianburg.
TYPE SPECIMEN. — Holotype female (BMNH).
description: Published as part of Vincent, Benoît & Laguerre, Michel, 2014, Catalogue of the Neotropical Arctiini Leach, [1815] (except Ctenuchina Kirby, 1837 and Euchromiina Butler, 1876) (Insecta, Lepidoptera, Erebidae, Arctiinae), pp. 137-533 in Zoosystema 36 (2) on page 158, DOI: 10.5252/z2014n2a1, http://zenodo.org/record/5395344
An Analysis of the Community Land Trust Model
Creators: name: Franklin-Mitchell, Tara
Publisher: name: Georgia State University
Year: 2017

description: Lefebvre's 'right to the city' concept involves collective ownership of the means of production, rights to information, right to difference, right to self-management, and what he refers to as ?autogestion.? Lefebvre?s ideas have captured the imagination of many grassroots and transnational organizations, such as the Right to the City Alliance and have been applied to various issues in the city dealing with human rights, including access to affordable housing, use of public space, and threats of displacement from gentrification. Within and across these organizations, it becomes critical to examine the contours of ?the right to the city? and what rights Lefebvre and activists who use this framework mean as they pursue their social justice agendas. In this study, I examine the community land trust model in the context of the ?right to the city? framework that Lefebvre (1996) developed and as interpreted by Purcell (2014). My analysis reveals that the grassroots CLT model more closely embodies the ideals of Lefebvre?s ?right to the city? through collective governance and the appropriation of urban space in contrast to other traditional CLT models that focus more narrowly on affordable housing. This study suggests the importance of the community?s voice in realizing the right to the city.
Characterization of Magnetorheological Impact Foams in Compression
Creators: name: Choi, Young
name: Wereley, Norman M.
Publisher: name: MDPI
Year: 2024
Subjects: adaptive cushioning material
compressive property
impact
isotropic, energy absorption and dissipation
magnetorheological elastomeric foam (MREF)

description: This study focuses on the development and compressive characteristics of magnetorheo- logical elastomeric foam (MREF) as an adaptive cushioning material designed to protect payloads from a broader spectrum of impact loads. The MREF exhibits softness and flexibility under light compressive loads and low strains, yet it becomes rigid in response to higher impact loads and ele- vated strains. The synthesis of MREF involved suspending micron-sized carbonyl Fe particles in an uncured silicone elastomeric foam. A catalyzed addition crosslinking reaction, facilitated by platinum compounds, was employed to create the rapidly setting silicone foam at room temperature, simplify- ing the synthesis process. Isotropic MREF samples with varying Fe particle volume fractions (0%, 2.5%, 5%, 7.5%, and 10%) were prepared to assess the effect of particle concentrations. Quasi-static and dynamic compressive stress tests on the MREF samples placed between two multipole flexible strip magnets were conducted using an Instron servo-hydraulic test machine. The tests provided measurements of magnetic field-sensitive compressive properties, including compression stress, energy absorption capability, complex modulus, and equivalent viscous damping. Furthermore, the experimental investigation also explored the influence of magnet placement directions (0◦ and 90◦) on the compressive properties of the MREFs.
Comagmatic Evolution of the Boulder and Pioneer Batholiths of Southwest Montana
Creators: name: Bankhead, John
Publisher: name: Georgia State University
Year: 2017

description: The tectonic region that encompasses Southwestern Montana is a petrologically complex area containing several batholiths and thrust faults, underlined by Precambrian basement rock and capped by sedimentary rocks. Intrusive volcanism of Southwest Montana best represented by the Pioneer and Boulder batholiths is a product of the eastward subduction of the Farallon Plate underneath the North American Plate during the Mesozoic time. Geochemical modeling made evident that the Pioneer and Boulder batholiths have a comagmatic relationship. This conclusion is derived from variation, spider and REE diagrams along with petrographic and geochemical models. The intrusion of these batholiths is likely related to the emplacement of a detached portion of the Idaho batholith known as the Sapphire block. Future models that are outside of the scope of this research must consider the evidence proposed in this document to produce an overarching model for the intrusion of the Pioneer and Boulder batholiths in the incredibly dynamic tectonic setting of the Mesozoic.
Idalus monostidza
Creators: name: Vincent, Benoît
name: Laguerre, Michel
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Erebidae
Idalus
Idalus monostidza

description: Idalus monostidza (Hampson, 1916)
Automolis monostidza Hampson, 1916: 231.
TYPE LOCALITY. — Peru, [Puno], Yahuarmayo.
TYPE SPECIMEN. — Holotype female (BMNH).
description: Published as part of Vincent, Benoît & Laguerre, Michel, 2014, Catalogue of the Neotropical Arctiini Leach, [1815] (except Ctenuchina Kirby, 1837 and Euchromiina Butler, 1876) (Insecta, Lepidoptera, Erebidae, Arctiinae), pp. 137-533 in Zoosystema 36 (2) on page 158, DOI: 10.5252/z2014n2a1, http://zenodo.org/record/5395344
A Geospatial Analysis: Impacts of Hurricane Matthew, St. Catherines Island, Georgia
Creators: name: Dobson, Steven
Publisher: name: Georgia State University
Year: 2017

description: The purposes of this study were to evaluate the shoreline dynamics and environmental change of St. Catherines Island shoreline through the application of an updated shoreline model (1859-2017). Efforts were completed to document and quantify the impacts to the nearshore environments of the island from Hurricane Matthew (07-08 October 2016). This was accomplished through the measurement of Net Shoreline Movement (NSM) that was performed along the shoreface at 200-meter spacings by using aerial imagery and ground-collected GPS data. The Hurricane Matthew NSM data along with the short-term shoreline rates were used to calculate the years of change along the shoreline in response to the storm, indicating that the storm represented an average of 3.7 years of average erosion. A spatial analysis of impacts conducted along the shoreline revealed major habitat losses within the study area of 66.5 acres and the limited accretion of 3.7 acres.
title: PFAS
title: PFAS
titleType: AlternativeTitle
Creators: name: (:Unkn) Unknown
Publisher: name: Umweltbundesamt
Year: 2020
Subjects: subject: PFAS
subject: Chemicals

description: Each issue of the German Environment Agency's "What Matters" magazine is devoted to relevant topics in the field of environmental protection. It is published every six months. In its 1-2020 issue, UBA looks at chemicals with the abbreviation PFAS: per- and polyfluorinated alkyl substances. These chemicals are used in many applications for their water, grease and soil-repellent function. Coffee-to-go cups, for example, can be coated with PFAS, just like water-repellent outdoor textiles. These chemicals are also contained in fire-fighting foams. There are a total of 4,700 different substances, the effects of which on humans and the environment are largely unresearched. PFAS are very durable and mobile. They are distributed across the globe by wind and water and accumulate in water, soil and living organisms - including humans. The What Matters magazine looks at these questions: What exactly are PFAS? How are they used? How do they get into the environment? And what can be done about the substances? Quelle: http://www.umweltbundesamt.de
description: Each issue of the German Environment Agency's "What Matters" magazine is devoted to relevant topics in the field of environmental protection. It is published every six months.  In its 1-2020 issue, ⁠UBA⁠ looks at chemicals with the abbreviation ⁠PFAS⁠: per- and polyfluorinated alkyl substances. These chemicals are used in many applications for their water, grease and soil-repellent function. Coffee-to-go cups, for example, can be coated with PFAS, just like water-repellent outdoor textiles. These chemicals are also contained in fire-fighting foams. There are a total of 4,700 different substances, the effects of which on humans and the environment are largely unresearched. PFAS are very durable and mobile. They are distributed across the globe by wind and water and accumulate in water, soil and living organisms - including humans. The What Matters magazine looks at these questions: What exactly are PFAS? How are they used? How do they get into the environment? And what can be done about the substances?
Geochemical Signatures of Stream Capture in the Retreating Blue Ridge Escarpment, Southern Appalachian Mountains
Creators: name: DuBose, David
Publisher: name: Georgia State University
Year: 2017

description: Stream capture is a major driver of the retreat of the Blue Ridge Escarpment, but timescales of capture are not well understood. This study examines stream sediment geochemistry to establish a set of sediment source fingerprints which can be used to identify and date the capture of the Tallulah River. Statistical analyses show significant differences in U, Th, and certain REE enrichment. These differences result from variations in bedrock along the lengths of each river and a shift in relative stream powers after capture to favor mobilization or deposition of heavy elements. The observed differences should be sufficient to identify where Tallulah sediment appears in floodplains of the capturing Tugaloo River, facilitating future dating of the capture event. Understanding the timing of river capture will provide insight into the ongoing reshaping and redistribution of river systems and interactions of geomorphic processes in the continuing evolution of the southern Appalachian Mountains.
Zeolite Facies and Environmental Change in the Plio-Pleistocene Baringo Basin, Kenya Rift
Creators: name: Minkara, Karim
Publisher: name: Georgia State University
Year: 2017

description: Sediments exposed in the Tugen Hills in the Central Rift of Kenya include an important hominin-bearing succession of volcaniclastic and fluvio-lacustrine deposits. The Hominin Sites and Paleolakes Drilling Project (HSPDP) retrieved a ~230 m core through a portion of the Chemeron Formation, containing a highly resolved succession of strata spanning events leading to the Plio-Pleistocene boundary (3.4-2.6 Ma). Trends in the character and abundance of zeolites indicate changes in paleoenvironmental conditions with varying stability identified through distinct facies assemblages. These seem to reflect high amplitude changes accompanying peak earth-orbital eccentricity at ~2.7 Ma, and relative stability at low eccentricity at ~2.9-2.7 Ma. This study suggests a decrease in K/Ca and an increase in Na/Ca with major fluctuations. Zeolites act as terrestrial climate proxies in the absence of biogenic material, aside from intervals of diatom-rich strata, and are suggesting episodes of strongest environmental fluctuations ~2.7-2.6 Ma and environmental stability ~2.9-2.7 Ma.
Idalus affinis Rothschild 1917
Creators: name: Vincent, Benoît
name: Laguerre, Michel
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Erebidae
Idalus
Idalus affinis

description: Idalus affinis Rothschild, 1917
Idalus affinis Rothschild, 1917: 476.
TYPE LOCALITY. — Brazil, S[an]ta Catarina.
TYPE SPECIMEN. — Holotype male (BMNH).
description: Published as part of Vincent, Benoît & Laguerre, Michel, 2014, Catalogue of the Neotropical Arctiini Leach, [1815] (except Ctenuchina Kirby, 1837 and Euchromiina Butler, 1876) (Insecta, Lepidoptera, Erebidae, Arctiinae), pp. 137-533 in Zoosystema 36 (2) on page 159, DOI: 10.5252/z2014n2a1, http://zenodo.org/record/5395344
Supplementary document for 1.36-um passively Q-switched laser by a Nd3+-doped double cladding phosphate glass fiber - 7254490.pdf
Creators: name: wang, yafei
name: Sun, Yan
name: Wang, Xin
name: Shao, Chongyun
name: Zhang, Lei
name: Wang, Shikai
name: Chen, Danping
name: Yu, Chunlei
name: Hu, Lili
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: Supplemental Document
Idalus agricus Dyar 1910
Creators: name: Vincent, Benoît
name: Laguerre, Michel
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Erebidae
Idalus
Idalus agricus

description: Idalus agricus Dyar, 1910
Idalus agricus Dyar, 1910b: 236.
TYPE LOCALITY. — Mexico, [Veracruz], Misantla.
TYPE SPECIMEN. — Holotype male no. 12 949 (USNM).
REMARK
One male and one female specimens from Misantla erroneously labeled PARATYPUS housed in SMF. See also I. agastus note.
description: Published as part of Vincent, Benoît & Laguerre, Michel, 2014, Catalogue of the Neotropical Arctiini Leach, [1815] (except Ctenuchina Kirby, 1837 and Euchromiina Butler, 1876) (Insecta, Lepidoptera, Erebidae, Arctiinae), pp. 137-533 in Zoosystema 36 (2) on page 159, DOI: 10.5252/z2014n2a1, http://zenodo.org/record/5395344
Investigating the Effect of Aging and Time on the Fate and Transport of Lead in Artificially Contaminated Tropical soils.
Creators: name: Balogun, Fatai
Publisher: name: Georgia State University
Year: 2017

description: Incubation and Batch desorption experiments were conducted on ultisol and a mollisol to assess the effect of aging temperature and contact time on Pb sorption in soils A and B horizon ultisol and Mollisol from Humboldt and San Luis Obispo County, California were incubated at room temperature, 50 and 70 ?C for 3 hours, 4 weeks and 2 months in the laboratory. After each aging period, samples were extracted with 10-4 M H2SO4 solution, equilibrated for 24 hours, centrifuged and filtered through a 0.45 æm filter. A separate subsample of the B-Horizon supernatant was passed through 0.22 æm filter. Increase in aging temperature and fixation time was observed to enhance Pb solubility and bioavailability in the A horizon soils. Mobility of Pb in the B horizon was greatly retarded. XRD analysis showed no phase change upon heating; while Kd computations showed partitioning of Pb in the solid phase of the mollisol was greater. This allows for assessing the risk associated with mobility of Pb in tropical soils, and shows that ground water in areas overlain by ultisols are probably more liable to Pb contamination.
Assessing the impact of Hurricane Katrina on the coastal wetland of St. Bernard, Louisiana
Creators: name: Rimal, Rukumani
Publisher: name: Georgia State University
Year: 2017

description: The wetlands of the coastal Louisiana have been disappearing at an alarming rate. The rate was further accelerated during the Hurricane Katrina. Hurricane Katrina converted a large area of wetland into open water by bulk removal of vegetation, flooding, and killing of plants through the salt water inundation. The aim of this study was to quantify wetland loss rates in a high salinity wetland of St. Bernard Parish, Louisiana before and after Hurricane Katrina made landfall. Change-detection-mapping and analysis, using Landsat TM images, was used for generating the change matrices. Images from 1990 and 2010 were analyzed to estimate total wetland loss and the wetland loss contributed by Hurricane Katrina over the 20-year period. The analysis revealed that wetland loss in the study area during Hurricane Katrina accounted for over half (65%) of the total land lost over a 20-year period (1990 to 2010). The annual net loss of wetland to water during 2003-2004, 2004-2005 and 2005-2006 were estimated to be 10.82 km2, 15.42 km2 and 36.06 km2 respectively, which is 26.45 %, 24.80% and 48.76% of total changes in four years (2003-2006). Vegetation disturbances were mapped using Normalized Difference Vegetation Index (NDVI).
Spatiotemporal Variation in Emotional Responses to 2017 Terrorist Attacks in London Using Twitter Data
Creators: name: Wang, Ruixue
Publisher: name: Georgia State University
Year: 2018

description: Terrorist attacks have a significant impact on human lives. This study examined emotional responses after the terrorist attacks in London in March and June of 2017, respectively. This research extracted tweets related to the two attacks by developing a Python tool interacting with the Twitter Application Program Interface (API). The tweets were analyzed for its negative emotion expression such as sadness. This study then analyzed these negative tweets using the space-time permutation model in SatScan and assessed their variation in space and time. Results suggested two significant clusters of negative tweets after the first attack. These clusters located in the metropolitan area of London and between Manchester and Liverpool within ten days of the attack. The findings may contribute to quick surveillance of emotional responses on the Twitter users.
Spatiotemporal Variation of Land-Use and Land-Cover in the Nairobi River Watershed, and Its Effects on the Inorganic Geochemistry of Nairobi River
Creators: name: MUCHEMI, FRANCIS
Publisher: name: Georgia State University
Year: 2018

description: Determining the effects of LULC and development on natural resources is necessary for sustainability. This study focused on LULC changes in NRW over the past 3 decades and the effects it had on the geochemistry of NR channel?s sediment. Impervious surfaces increased from 2.5% to 11.9%. Samples from the urban class had elevated levels of contaminants than other classes. The concentrations of major inorganic elements were normal compared to the juvenile UCC except MnO and P2O5 that were heterogeneously distributed and significantly enriched. Heavy metals exhibited high DR than USEPA SSL in urban. Pb, Ce and Sb had the highest concentration of 3400, 769 and 187.5 ppm respectively in the urban class. Heterogeneously distributed and enriched elements like Pb, Y, Yb, Zr, Er,Ce, Zn, Lu, Sm, Th, Nd etc., were attributed to humans? input. Minerals identified were smectite, kaolinite, quartz, anorthoclase and critobalite? Sediments? alteration decreased down the river gradient.
Toward a Diffusive, Non-Destructive Approach to Measuring Stable Isotopes of Water within Tree Stems
Creators: name: Raulerson, Scott
Publisher: name: Georgia State University
Year: 2018

description: Traditional methodologies for measuring ratios of stable isotopes within the xylem water of trees involves destructive coring of the stem. A recent approach involves permanently installed probes within the stem, and an on-site assembly of pumps, switching valves, gas lines, and climate-controlled structure for field deployment of a laser spectrometer. The former method limits the possible temporal resolution of sampling, and sample size, while the latter may not be feasible for many research groups. Researchers have used direct liquid-vapor equilibration as a method to measure isotope ratios of the water in soil pores. Typically, this is done by placing soil samples in a fixed container, and allowing the liquid water within the soil to come into isotopic equilibrium with the headspace of the container. We present a novel approach to measuring xylem water that relies on liquid-vapor equilibration, built from the principals applied to soil samples.
Evaluation of Stable Isotope Ratios within Meteoric, Surface, and Groundwater within the Kathmandu Valley
Creators: name: giri, upendra
Publisher: name: Georgia State University
Year: 2018

description: Determining the recharge area of ground water can greatly enhance our understanding and management of land use, especially in mountainous urban areas such as Kathmandu. Analyzing the stable isotopic composition of precipitation, unconfined aquifers, and deep aquifers, two specific recharge areas were noticed, contrary to previous research indicating only one recharge area. The other focus of the study was to see the effect of elevation on the stable isotopes of precipitation. Precipitation samples were collected in nine different elevations around the Kathmandu basin. A multiple regression model showed that delta values in precipitation were correlated with elevation, latitude and time of year (R2 = 0.41).
Surface Soil Metal and Metalloid Contamination  Within the Urban Environment of Atlanta, Georgia
Creators: name: Henson, Lanier
Publisher: name: Georgia State University
Year: 2018

description: Previous research from urban cities around the world have found elevated soil lead concentrations in many of the cities because of anthropogenic deposition of lead from industrial, transportation, and residential applications. Children, impoverished populations, and pregnant women all experience increased adverse health risks when exposed to land with elevated soil lead concentration. The project tested the following hypotheses concerning soil lead within the Atlanta urban environment; soil is enriched from transportation sources and deteriorating lead paint, soil lead is not sourced from the weathering of the bedrock or soil, and enrichment is heterogeneous. The hypotheses were tested through the geochemical and spatial analysis of 750 soil samples collected within the Atlanta urban environment, utilizing Xray fluorescence, inductively coupled plasma mass spectroscopy analysis, and statistical interpretation. Soil lead concentrations in the 100æm fraction ranged from 10ppm to 3029ppm, with a median value of 75ppm. Soil lead concentrations in the bulk samples were less enriched and ranged from below detection limit to 2599ppm, with a median value of 59ppm. Semivariograms of the data, illustrates poor spatial autocorrelation between samples at this sampling distance.
Geologic Mapping of Chirrip¢ National Park, an Overview of Lithology, Stratigraphy, and Tectonics Within the Talamanca Cordillera, Costa Rica
Creators: name: Kirn, Russell
Publisher: name: Georgia State University
Year: 2018

description: Cerro Chirrip¢, located in Chirrip¢ National Park, Costa Rica, is the highest peak in the Central American isthmus. Though there already exist published geologic maps that encompass the study area, they lack the resolution and detail of the map produced by this study. Other materials produced by this study include a stratigraphic column, rock unit descriptions, and three cross-sectional transect profiles. These materials demonstrate the position and attitude of the rock units, their mechanism of emplacement, as well as their ages relative to one another. The aims of this study were to describe and map the observed rock units, characterize the spatial and temporal relations among said units, and elucidate current and past geologic processes that shape the tropical landscape of Chirrip¢ National Park.
INDEX WORDS: Igneous petrology, Intrusive, Talamanca, Mineralogy, Ventisqueros, Chirrip¢
GEOLOGIC MAPPING OF CHIRRIP? NATIONAL PARK, AN OVERVIEW OF LITHOLOGY, STRATIGRAPHY, AND TECTONICS WITHIN THE TALAMANCA CORDILLERA, COSTA RICA
The Volcanism Ontology (VO): Semantic Modeling of Volcanic Eruptions and Volcanoes
Creators: name: Myer, John
Publisher: name: Georgia State University
Year: 2018

description: We have modeled the complex material and process entities and properties of volcanic eruptions and structures in the Volcanism Ontology (VO) applying several top-level ontologies such as Basic Formal Ontology (BFO), SWEET, and Ontology of Physics for Biology (OPB) within a single framework. The upper level framework separates the entities into investigative and volcanism entities, and each further separated into their own BFO framework. This allows for VO to be one of the best steps towards a domain ontology to cover the complexity found in volcanology. When deployed on the web, VO will be used to explicitly and formally annotate data and information collected by volcanologists based on domain knowledge. This will enable the integration of global volcanic data and improve the interoperability of software that deal with such data.