Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 373 for “"Presence and Absence"”.
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Silica dissolution at low pH in the presence and absence of fluoride
SiO₂ is the most abundant oxide in the earth and its properties, behaviors and interactions are of immense scientific and technological importance. Of particular importance are the interactions of silica with aqueous fluids because these fluids are present in nearly every natural setting. The …
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Influence and Its Opposite: Presence and Absence in the Work of Harold Bloom
In the years since he formulated and expanded on it in The Anxiety of Influence (1973), A Map of Misreading (1975), and Kaballah and Criticism (1975), Harold Bloom's theory of the "anxiety of influence" has engendered more ambivalence than serious investigation into his theory and its influences. …
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Our Identities Are Different: Unpacking the Presence and Absence of Organizational Identity in Corporate Apologies
… Goffman's (1971) classification of accounts and apologies, I argue that public demands for an apology may include an implicit demand for a change in the organizational identity. However, organizational identity and apology literatures do not consider such a sudden shift as feasible, or …
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Thermodynamic and kinetic studies of galena in the presence and absence of potassium ethyl xanthate
A study of the electrochemistry of the PbS-H₂O and PbS-KEX-H₂O systems has been made by carrying out thermodynamic calculations, electrochemical experiments and microflotation tests. Particular attention has been paid to how well this system can be described by equilibrium thermodynamics. The …
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Hydrophobic Forces in Free Thin Films of Water in the Presence and Absence of Surfactants
… surface. The steric forces increased with pH and temperature, which may be explained by the increased solubilization of asphaltenes in water. The steric force also increased with electrolyte concentration, possibly due to a decrease in the mobility of the tails of the asphaltenes on the …
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Historicizing and Engaging Lindy Hop: The Development, Presence, and Absence of Black Cultural Values and Aesthetics
… Lindy Hop in Harlem, New York during the 1920s and 30s from a sociocultural perspective, applying the findings to an instance of contemporary Lindy Hop practice at Jazz Attack, a Lindy Hop venue in Philadelphia, Pennsylvania, in order to ascertain where elements of Black culture are present or …
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The Effect of Exercise on Mechanical Pressure Pain Threshold in the Presence and Absence of Delayed-Onset Muscle Soreness
… decreased pain sensitivity (hypoalgesia) during and following maximal and sub-maximal isometric exercise (Koltyn, 2002). Research on fibromyalgia patients however has shown the same exercises increase pain sensitivity (hyperalgesia) (Staud, Robinson, & Price, 2005; Kosek, Ekholm, & Hansson, …
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Elucidation of the lipid degradation process in soft tissue and fluid during decomposition, in the presence and absence of insects.
Decomposition has been extensively studied in the presence of insects, however the process in the absence of insects has been considerably less documented. In this study, the decomposition process was compared between domestic pig carcasses in the presence and the partial and complete absence of …
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Evaluation of bactericides and plant defense inducers in the presence and absence of onion pathogens Pantoea spp. and Burkholderia gladioli in Colorado
… including crop rotation, irrigation management, and proper cold storage postharvest. In 2019, twelve national research institutions formed a collaborative project called "Stop the Rot" (StR) to develop diagnostic identification tools and research cultural practices across different onion growing …
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Effect of penicillin G on the reproduction of Salmonella cholerasuis in the presence and absence of porcine alveolar macrophages in a pharmacodynamic model
… interaction between changing drug concentrations and a bacterium in a host environment. The purpose of this research project was to modify an in vitro model for examining the effects of changing penicillin G concentrations on the reproduction of logarithmic growing Salmonella cholerasuis in the …
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Role of estradiol and progesterone in regulating prostaglandin F(2 alpha) secretion and luteolysis in the ewe
… conducted to evaluate the effects of estradiol and progesterone on the secretory pattern of oxytocin and the oxytocin-induced secretion of prostaglandin F$\sb{2\alpha}$ (PGF$\sb{2\alpha}$) during luteolysis in the ewe. For the first two studies, fifty mixed-breed ewes underwent selective …
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Structure-function photodynamic herbicidal studies of phenanthroline, dipyridyl and pyridine analogs
… were studied in johnsongrass seedlings and their structure-function relationships were analyzed. The results showed that all three groups of modulators induced DV-MPE formation. DV-Pchlide formation was induced by phenanthroline and dipyridyl analogs and was inhibited by pyridine …
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Telling presences: narrating divine epiphany in Homer and beyond.
… Greek narratives of encounter between gods and mortals cannot be understood simply in terms of constellations of recurrent descriptive features or in terms of the iterability of type-scene or ritual. Divine epiphanies are moments of disruption or antistructure which provoke strategic, …
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Re-Thinking Anthropomorphism Through a Genetic Philosophy of Time
<p>In the classical Christian theological understanding, God and time are tightly interwoven (e.g. time and eternity, the Incarnation, and liturgy) and inform how we comprehend the presence and absence of the Incomprehensible in our day-to-day lives. Yet the classical Christian understanding does …
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Assessment of limb perfusion by measurement of toe temperatures with a skin probe in patients with intraaortic balloon pumps
… based on colour, warmth, circulatory return, and quality of pedal pulses has' been questioned because of their subjective nature. Consequently, there is a need to identify a reliable quantitative method of monitoring peripheral perfusion in patients with IABPs. Measurement of toe temperatures …
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The effect of Staphylococcus epidermidis on the pH and dissolution of substitute bone graft materials
… the effect of S. epidermidis 11047 on the pH and dissolution of 5 different bone substitute materials. Part 1 – Measured the pH, calcium and phosphate of the culture medium in the presence and absence of the 5 bone substitute materials before and after autoclaving. Part 2 – Measured the pH of …
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Fast Processes in Heme Proteins: Mechanisms of Electron Transfer and Carbon Monoxide Recombination
… analysis of the geminate recombination in the presence and absence of substrate.
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Structure-Function Analysis of the EsaR N-terminal Domain
… that alter gene expression as a function of ligand detection. This coincides with a high population density and/or a low rate of signal ligand diffusion. The majority of LuxR proteins are activated only in the presence of the signal ligand, an acyl-homoserine lactone (AHL). EsaR, from the corn …
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Transthyretin Amyloidosis: Proteolytic cleavage accelerates G53A TTR misfolding and aggregation
… of the CD loop in TTR pathological mutants S52P and E51_S52dup was previously demonstrated to promote aggregation as a result of tetrameric structure destabilization. Type A and B fibrils were detected in vivo, suggesting alternative TTR misfolding and aggregation mechanisms. The main component …
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How can the solo female performer be rendered present through absence?
Through both practical and textual research, this thesis explores whether it is possible to be both present and a presence in performance time and space through absence. Within it, I offer a discussion of the concepts of presence and absence, and what they mean in a theatre/performance context, …
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