65,078 research outputs found
Characterization of the effects of fuel and entrained salt on soot morphology
No full textSoot is an important contributor to climate change and has negative effects on human health. These impacts depend on the morphological properties which influence the optical properties, mobility and surface area available to adsorb other contaminants. Different combustion sources may produce soot with different morphologies and thus, different environmental and health impacts. Three soot sources were studied: a dual-fuel natural gas marine engine and two laboratory gas flares. The ship studied operated on its normal route during the measurement campaign and was run both in dual-fuel mode, and diesel-only mode to serve as a comparison. Dual-fuel mode produced substantially less soot, ~96% less, than diesel-only mode at all loads except idle. Soot morphology appeared to be independent of operating load but did vary slightly based on fuelling mode. Dual-fuel mode produced on average smaller aggregates than diesel-only mode however, the small dual-fuel mode aggregates tended to have slightly larger primary particles when compared to diesel-only generated aggregates. Overall the differences in morphology are small compared to the reduction in the amount of soot produced. Gas flaring is used in the oil and gas industry to dispose of gas. The laboratory flares studied were designed to simulate conditions which would be found in the upstream oil and gas industry. Raman spectroscopy showed that the heavier fuels had more graphitic nanostructures and transmission electron microscopy (TEM) and mobility size distributions showed that the aggregates tended to be larger. The relationship between the primary particle size and the aggregate size, did not depend on the fuel. During hydraulic fracturing operations, it is likely that the flowback fluids become entrained in the flare fuels resulting in liquids with inorganic salts becoming part of the combustion process. The morphology of the soot did not change due to the salt however, most of the soot particles became internally mixed with the salt. Unlike soot, salt tends to be an effective cloud condensation nucleus (CCN) and the large number of salt particles will likely influence local cloud formation. Furthermore, the salt particles which attach to the soot may turn the soot itself into an effective CCN.Applied Science, Faculty ofMechanical Engineering, Department ofGraduat
Treatment Techniques for Adult Female Survivors of Childhood Sexual Abuse
No full textThe author reviews recent empirical, case study, and conceptual literature that examines or discusses treatment techniques for adult female survivors in individual therapy. These techniques are divided into the following 11 categories: relationship‐building techniques; questioning: family‐of‐origin techniques; writing techniques; gestalt work, role playing, and psychodrama; transactional analysis and inner‐child work: hypnotherapy and guided imagery; cognitive techniques; behavioral techniques; life‐skills training; and other techniques. The author concludes with implications for researchers and practitioners. 1994 American Counseling Associatio
Trade-off between soot and NO emissions during enclosed spray combustion of jet fuel
No full textISSN:2045-232
On e \u3csup\u3e-\u3c/sup\u3e + Mn elastic scattering at ϵ = 20 eV impact energy
No full textSynopsis Current situation relating to 20-eV electron elastic scattering off Mn is discussed and complemented by the author s calculation. Noticeable discrepancies between available calculated and experimental data for large scattering angles are highlighted. Existing understanding of electron scattering off Mn is, thus, inconclusive. Further probes into the matter are urged
Marker: Locust Dell Academy 1834-1843
No full textLocation of Marker: Front of Willingham Hall, University of North Alabama. Text: On this site Nicholas Marcellus Hentz conducted a girls\u27 school. Native of Metz, France, Hentz was a painter, entomologist, author, and was once a professor at University of North Carolina. Experimenting with silkworms, he planted groves of mulberry trees around this section of town. His wife, Caroline Lee Whiting Hentz, native of Massachusetts, assisted in the academy. She also wrote plays, poems, stories, popular novels, and a significant diary of her years in Florence.https://ir.una.edu/markers/1011/thumbnail.jp
Recognition influences social interactions in red-spotted newts
No full textAdult Notophthalmus viridescens tend to be site tenacious within ponds and philopatric to their native ponds. In laboratory chambers, newts spent significantly more time moving away from familiar versus unfamiliar individuals from the same pond. They also exhibited significantly more avoidance\u27 or escape\u27 behavior when paired with individuals from a foreign pond than when paired with individuals from the same pond. Red-spotted newts can thus identify individuals with which they are closely associated and distinguish individudals from a foreign pond. -from Author
Post 1990s Dance Theatre and (the idea of) the Neutral
No full textPhDThe thesis focuses on the concept of neutrality in the works of contemporary
European (post 1990s) choreographers. While broad ideas around neutrality are
considered, the thesis primarily engages with Roland Barthes’ definition of
neutrality as a structural term: 'every inflection that, dodging or baffling the
paradigmatic, oppositional structure of meaning, aims at the suspension of the
conflictual basis of discourse'. I argue that the minimalist work of Judson
Church, New York City, is anticipating the interest in the neutral that will more
strongly formulate itself in dance theatre after the 1990s. In the first chapter on
Jérôme Bel, the concept of neutrality is introduced as a general idea, together with
its inherent problem. The 'problem' is not that this or that element that Bel
chooses cannot be perceived as neutral, but that neutral or stage zero can never be
neutral enough. The second chapter, dedicated to the work of Thomas Lehmen,
explores the idea of 'neutralization' in relation to the notion of the self in
Lehmen's performance, where 'It is not I or you who lives: 'one' (une vie) lives in
us' (P. Hallward). In the third chapter I argue that in Raimund Hoghe’s
performances, love is conceived essentially as a balance between narcissism and
pure object-love – as a neutral state. The fourth chapter, on Croatia’s BADco.,
gravitates around the ways in which group processes function, arguing that the
idea of the neutral is located in the ‘invisible hand’ of emergence. The thesis shifts
academic performance analysis towards a more concept-based approach,
unpicking and/or constructing timeless, abstract and broad concepts and ideas that
the work of these choreographers resonates with
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