147 research outputs found
"Christabel" and the politics of fragmentation
No full textThis thesis attempts to situate Coleridge's “Christabel” as a text that exists at the intersection of 19th century Queer discourse and post-structural theory. By looking at “Christabel” as both a queer text and a fragment poem, this thesis makes the case that one type of discourse informs the other and the fragmentary nature of the poem echoes and supports analysis of “Christabel” as a queer text. It relies on the work of prominent writers on Romantic Fragment Poems as well as Derridean post-structural discourse as a theoretical model to understand Christabel's relationship with Geraldine and the fragmentary nature of the poem that obfuscates their relationship.M.A.Includes bibliographical referencesby Calin Thomas Grajk
Posibilitati de perfectionare a calculatiei costurilor in silvicultura prin introducerea metodei standard-cost
No full textThe book-keeping of the administration must insure the rapid acquiring of exact, viable, clear figures adapted to different aspects of the current administration. The wise use and the timely transmission of this information will allow the management of the Forrest District to react to the problems that might appear in the shortest time possible. Furthermore, it will allow for the formulation of a diagnosis as well as for the elaboration of a coherent set of rules which can facilitate a long-lasting and efficient administration of the forests the district has in its jurisdiction. The necessity of the lasting reduction of the costs for the insurance of economic efficiency at the level of the Forrest District, together with the demands necessary for the better management of the units in the actual conditions, impose the improvement of the costs calculation. The purpose is to create a stronger role for these methods to be able to make decisions concerning the rational use of the production factors, the improvement of the technological processes and the adaptation of an efficient organisational structure.management of the Forrest District, cost calculation, reduction of the costs, standard – cost method
In-situ analysis of the gas-emissions of the Eastern Carpathians (Romania) using the Multi-Gas instrument
No full textThe Multi-Gas instrument is an important tool for the investigations and monitoring of volcanic systems world- wide, because it can be easily placed on a volcano and can provide real-time data on the compositional changes of the fluids that are released (Aiuppa et al., 2005, Shinohara et al., 2005). We used a specially designed Multi-Gas to gather in situ compositional information about low-temperature, CO2-rich gases, emerging from different manifestations like dry gas emissions (mofettes), bubbling pools and springs.
The instrument is equipped with two IR sensors for CO2 (0-100%) and CH4 (0-7%) and one electrochemical sensor for H2S (0-200 ppm).
The Multi-Gas was used during several field surveys between September-November 2018 across the Eastern Carpathians area, where a total of 69 gas emissions were investigated for their CO2, CH4 and H2S concentrations. Concentrations of the different gas-species varied according to the geological context. The CO2 concentrations varied between 0.96 and 98.08 %. The highest values were measured in the the volcanic area of Ciomadul, the youngest volcano of the Eastern Carpathians (32 kyr, Harangi et al., 2015), characterized by high CO2 gas output up to 8700 t/year (Kis et al., 2017). High values were measured also in the thrusted and folded area of the Carpathian Flysch and, suggesting the tectonic control over the appearance of the gas emissions. The CH4 concentrations ranged between 0.21 and 6.76% and were higher at hydrocarbon-prone areas, such as the sedimentary deposits of the Transylvanian Basin and Carpathian Flysch. In these cases the CO2 concentrations were low (up to 4.6%).
The concentrations of H2S were higher at the volcanic area of Ciomadul, reaching values above the detection limit (∼200 ppm).
The Multi-Gas proved to be useful tool in the in-situ investigation of cold gas emissions of the Eastern Carpathians, being efficient especially for the measurement of the H2S concentrations that are very sensitive for oxidation processes.
This research belongs to the scientific project supported by the OTKA, K116528 (Hungarian National Re- search Fund), the EU and Hungary, co-[U+FB01]nanced by the European Regional Development Fund in the project GINOP-2.3.2-15-2016-00009 ‘ICER’, New York Hungarian Scientific Society and the Deep Carbon Observatory.
Aiuppa, A., Federico, C., Giudice, G., Gurrieri, S. 2005, Chemical mapping of fumarolic field: La Fossa Crater, Vulcano Island (AeolianIslands, Italy), Geophysical Research Letters, Vol. 32, LI3309
Harangi, Sz., Lukács, R., Schmitt, A.K., Dunkl, I., Molnár, K., Kiss, B., Seghedi, I., Á. Novothny, Molnár, M. 2015, Constraints on the timing of Quaternary volcanism and duration of magma residence at Ciomadul volcano, east-central Europe, from combined U-Th/He and U-Th zircon geochronology, Journal of Volcanology and Geothermal Research, 301, 66-80
Kis B.M. , Ionescu, A., Cardellini, C., Harangi, Sz., Baciu, C., Caracausi,C. & Viveiros, F. 2017, Quan- tification of carbon dioxide emissions of Ciomadul, the youngest volcano of the Carpathian-Pannonian Region (Eastern-Central Europe, Romania), Journal of Volcanology and Geothermal Research, 341, 119–130
Shinohara, H. 2005, A new technique to estimate volcanic gas composition: plume measurements with a portable multi-sensorsystem, Journal of Volcanology and Geothermal Research, 143, 319– 33
A Poet at the Fountain: Essays on the Narrative Verse of Guillaume de Machaut
No full textThis collection is the first full-length literary study on Machaut, France’s leading poet and musician of the 14th century. Machaut’s narrative poems, called dits, have only been lightly studied. Here, author William Calin examines the works for their intrinsic merit and for their historical importance in influencing many writers, most notably Chaucer.
William Calin is professor of Romance Languages at the University of Oregon.https://uknowledge.uky.edu/upk_french_and_francophone_literature/1002/thumbnail.jp
Introduction to Neuroscience - Neurophysiology
No full textThis is an early draft of a chapter from a new Introduction to Neuroscience textbook, an effort that is:
Open source, available free to students
Faculty created
Peer reviewed (in progress)
High quality, including professional illustrations and learning resources
This textbook is edited by
Elizabeth Kirby, PhD
Melissa J. Glenn, PhD
Noah J. Sandstrom, PhD and
Christina L. Williams, CL
and supported by funding from the National Science Foundation
This early preview of the book is posted by Bob Calin-Jageman, an author Chapter (2 on neurophysiology. The purpose of posting this early-stage chapter here is:
To make it available for Dr. Bob’s Introduction to Neuroscience students
To gather feedback from others interested in this chapter or project
If you have any feedback, find a typo, notice an inaccuracy, etc… please submit your comments to Bob Calin-Jageman via email or social media
Generalized two-field α-attractor models from geometrically finite hyperbolic surfaces
No full textWe consider four-dimensional gravity coupled to a non-linear sigma model whose scalar manifold is a non-compact geometrically finite surface Σ endowed with a Riemannian metric of constant negative curvature. When the space-time is an FLRW universe, such theories produce a very wide generalization of two-field α-attractor models, being parameterized by a positive constant α, by the choice of a finitely-generated surface group Γ⊂PSL(2,R) (which is isomorphic with the fundamental group of Σ) and by the choice of a scalar potential defined on Σ. The traditional two-field α-attractor models arise when Γ is the trivial group, in which case Σ is the Poincaré disk. We give a general prescription for the study of such models through uniformization in the so-called “non-elementary” case and discuss some of their qualitative features in the gradient flow approximation, which we relate to Morse theory. We also discuss some aspects of the SRST approximation in these models, showing that it is generally not well-suited for studying dynamics near cusp ends. When Σ is non-compact and the scalar potential is “well-behaved” at the ends, we show that, in the naive local one-field truncation, our generalized models have the same universal behavior as ordinary one-field α-attractors if inflation happens near any of the ends of Σ where the extended potential has a local maximum, for trajectories which are well approximated by non-canonically parameterized geodesics near the ends; we also discuss spiral trajectories near the ends. Generalized two field α-attractors illustrate interesting consequences of nonlinear sigma models whose scalar manifold is not simply connected. They provide a large class of tractable cosmological models with non-trivial topology of the scalar field space. © 2018 The Author(s)11Nsciescopu
Extreme methane deuterium, nitrogen and helium enrichment in natural gas from the Homorod seep (Romania)
No full textMethane (CH4) in terrestrial environments, whether microbial, thermogenic, or abiogenic, exhibits a large variance in C and H stable isotope ratios due to primary processes of formation. Isotopic variability can be broadened through secondary, post-genetic processes, such as mixing and isotopic fractionation by oxidation.
The highest and lowest 13C and 2H (or D, deuterium) concentrations in CH4 found in various geologic environments to date, are defined as “natural” terrestrial extremes. We have discovered a new extreme in a
natural gas seep with values of deuterium concentrations, δDCH4, up to+124‰that far exceed those reported for any terrestrial gas. The gas, seeping from the small Homorod mud volcano in Transylvania (Romania), also
has extremely high concentrations of nitrogen (N92 vol.%) and helium (up to 1.4 vol.%). Carbon isotopes in CH4, C2H6 and CO2, and nitrogen isotopes in N2 indicate a primary organic sedimentary origin for the gas
(a minor mantle component is suggested by the 3He/4He ratio, R/Ra~0.39). Both thermogenic gas formation
modeling and Rayleigh fractionation modeling suggest that the extreme deuterium enrichment could be
explained by an oxidation process characterised by a δDCH4 and δ13CCH4 enrichment ratio (ΔH/ΔC) of about 20,
and may be accounted for by abiogenic oxidation mediated by metal oxides. All favourable conditions for such a process exist in the Homorod area, where increased heat flow during Pliocene–Quaternary volcanism may have played a key role. Finally we observed rapid variations (within 1 h) in C and H isotope ratios of CH4, and
in the H2S concentrations which are likely caused by mixing of the deep oxidized CH4–N2–H2S–He rich gas with a microbial methane generated in the mud pool of one of the seeps.
We hypothesize that the unusual features of Homorod gas can be the result of a rare combination of factors induced by the proximity of sedimentary organic matter, mafic, metal-rich volcanic rocks and salt diapirs,leading to the following processes: a) primary thermogenic generation of gas at temperatures between 130 and 175 °C; b) secondary alteration through abiogenic oxidation, likely triggered by the Neogene–Quaternary volcanism of the eastern Transylvanian margin; and c) mixing at the surface with microbial methane that
formed through fermentation in the mud volcano water pool. The Homorod gas seep is a rare example that demonstrates how post-genetic processes can produce extreme gas isotope signatures (thus far only
theorized), and that extremely positive δDCH4 values cannot be used to unambiguously distinguish between biotic and abiotic origin.Published89-964.5. Studi sul degassamento naturale e sui gas petroliferiJCR Journalreserve
Long non-coding RNAs and cancer: a new frontier of translational research?
No full textAuthor manuscriptTiling array and novel sequencing technologies have made available the transcription profile of the entire human genome. However, the extent of transcription and the function of genetic elements that occur outside of protein-coding genes, particularly those involved in disease, are still a matter of debate. In this review, we focus on long non-coding RNAs (lncRNAs) that are involved in cancer. We define lncRNAs and present a cancer-oriented list of lncRNAs, list some tools (for example, public databases) that classify lncRNAs or that scan genome spans of interest to find whether known lncRNAs reside there, and describe some of the functions of lncRNAs and the possible genetic mechanisms that underlie lncRNA expression changes in cancer, as well as current and potential future applications of lncRNA research in the treatment of cancer.RS is supported as a fellow of the TALENTS Programme (7th R&D Framework Programme, Specific Programme: PEOPLE—Marie Curie Actions—COFUND). MIA is supported as a PhD fellow of the FCT (Fundação para a Ciência e Tecnologia), Portugal. GAC is supported as a fellow by The University of Texas MD Anderson Cancer Center Research Trust, as a research scholar by The University of Texas System Regents, and by the Chronic Lymphocytic Leukemia Global Research Foundation. Work in GAC’s laboratory is supported in part by the NIH/ NCI (CA135444); a Department of Defense Breast Cancer Idea Award; Developmental Research Awards from the Breast Cancer, Ovarian Cancer, Brain Cancer, Multiple Myeloma and Leukemia Specialized Programs of Research Excellence (SPORE) grants from the National Institutes of Health; a 2009 Seena Magowitz–Pancreatic Cancer Action Network AACR Pilot Grant; the Laura and John Arnold Foundation and the RGK Foundation
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