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 89 for “"slippery"”.
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Fabrication of natural and magnetic slippery surfaces
Liquid-infused porous surfaces (LIPS) are a type of low adhesion surfaces. They allow most common solids and liquids to slide off the surface easily. Because of this they are able to reduce the adhesion of food, ice, and even blood platelets to surfaces. As a result, LIPS have applications in …
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Climate, uncertainty, and the slippery measurement of Antarctic ice
This thesis presents a history of scientific uncertainty as told through several key episodes in the mapping, measuring, and modeling of Antarctica's ice sheets. Throughout, I trace the scientific practices constraining uncertainty—and the ways in which uncertainty has repeatedly escaped …
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Liquid-infused slippery surfaces for air-conditioning and refrigeration applications
… wet conditions, but the pressure drop of the slippery prototype is decreased by up to 27% due to better water drainage behavior than that of a hydrophilic baseline. Overall, the liquid-infused heat transfer surfaces show promise for AC&R applications.
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Slippery Surfaces and the Biomechanics of Climbing in Macaranga-Ant Mutualisms
… tips ablated, they could no longer climb on the slippery epicuticular wax crystals of Macaranga, but they could still climb on artificial smooth surfaces. When wax runners had their arolia ablated, they could still climb the slippery epicuticular wax crystals of Macaranga, but they could not …
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An analysis of surface water from an informal settlement, Langrug, Franschhoek: down a slippery slope
Contaminated surface water from limited sanitation and drainage systems in informal settlements degrades receiving rivers. However, little is known about the water quality and flow of rivers draining informally settled catchments. This study explores the dynamics of a human water system in an …
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Keeping Kids in School: A Slippery Slope for Miskitu Families Living in the Pearl Lagoon Basin of Nicaragua
<p>In 2014, Miskitu participants in the communities of Raitipura and Kahkabila and several of their children had dropped out of school. Earlier quantitative research revealed a problem of low matriculation in elementary and high schools in all of Nicaragua. This inquiry differed from others in that …
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The Slippery Slope Between Falling And Recovering: An Examination Of Sensory And Somatic Factors Influencing Recovery After A Slip
Background: Slips and falls account for large rates of injury and mortality in multiple populations. During an unexpected slip, sensory mechanisms are responsible for signaling the slip to the central nervous system, and a series of corrective responses is generated to arrest the slip and prevent a …
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White-tailed deer density and habitat relationships
… to winter ADF values. Bark-stripping occurred on slippery elm trees during the winter in a high deer density area. No significant association was found between stripping of slippery elms and age, dbh, and height classes. Protein (P < 0.001) and starch (P < 0.01) contents of the bark were …
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The Effects of Age on Stress and The Biomechanics of Slips and Falls
… groups were evaluated while walking over dry and slippery floor surfaces. Biomechanical parameters included: step length, required coefficient of friction (RCOF), slip distance, and heel contact velocity. Physiological parameters included: stress and anxiety. Overall, the results indicated that …
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Effects of Age on Gait Parameters and Muscle Activity During Adjustment, and the Relationship of Fear of Falling
… associated with gait adjustments across a known slippery surface may help in proactively avoiding slips and falls. The primary goal of this study involved examination of gait parameters and muscle activity characteristics of the lower extremities during two different walking conditions. Research …
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Relationships between Hamstring Activation Rate and Biomechanics of Slip-induced Falls among Young and Older Adults
… and electromyography (EMG) while walking over a slippery surface were collected and examined in the study. Normalized EMG data were examined in term of activation rate and compared to heel contact velocity. Twenty-eight subjects from two age groups (14 young and 14 elderly) walked across a track …
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Grip, slip, petals, and pollinators: Linking the biomechanics, behaviour and ecology of interactions between bees and plants
… of petals do have a rough surface, some have slippery petals. In the field, bumblebees avoided landing on slippery hollyhock petals in favour of the easy-to-grip staminal column. In contrast, honey bees, which are smaller and have larger adhesive pads, landed on both the staminal column and …
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Biomechanics Of Slips In Alternative Footwear
… under normal dry flooring conditions and under slippery flooring conditions with three commonly used alternative casual footwear [thong style flip-flops (ff), crocs with clogs (cc) and slip resistant low-top shoe (lt)]. The study will follow a within-subjects repeated measures design with each …
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Impact of heat exchanger surface wettability on condensation, frosting, and defrosting performance under practical testing conditions
… superhydrophilic, quasi-liquid surfaces, and slippery liquid-infused porous surfaces, have shown promise in laboratory studies but remain insufficiently explored in system-level evaluations. This dissertation investigates a broad set of engineered surface modifications applied to aluminum heat …
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Reno at the Races: Sporting Life versus Progressive Reform
… not a catalyst, this legislation began Nevada's slippery slope to becoming a wide-open gambling state. It examines how the acceptance of horse race betting opened the door for more ambitious forms of gambling while other states eventually followed Nevada's lead and passed similar horse race …
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Cross -Border Critical Race Theory: Black and Native Fiction, American and Canadian Legal Policy
… privileges granted in treaties. Exposing this slippery and self-serving legal categorization, John Joseph Mathews, D'Arcy McNickle, Leslie Marmon Silko, and Gerald Vizenor target an audience with an American understanding of exclusive racial categories whereas Beatrice Culleton, Joan Crate, and …
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Finite element analysis of adhesive contact interface in continuous 3D printing
… has been proposed based on the observation of a slippery water layer on the peristome surface of pitcher plant. This hydrophobic layer provides an effective shield to solid adhesion due to its low adhesive energy, and attracting force between fabricated part and UV curing interface is …
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The Euthanasia Debate: International Experience and Canadian Policy Proposals
… to provide a context for this discussion. A "slippery slope" argument emerges via the claim that, in practice and in principle, euthanasia can neither be contained nor managed upon its introduction into a society. A theoretical model based on virtue theory is then used to interpret these …
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Floppy realism: a strategy for dissolving form and space in painting
… representative act where forms or objects become slippery and difficult to grasp. Such a position is central to my practice. This essay maps the topography of Floppy Realism, taking the work of Giorgio Morandi and Mark Rothko as fluid points parenthesising this malleability. I establish a common …
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Ru(m)inations; A Project in San Lorenzo
… the city as a Janus-faced entity suggests a slippery liminal zone between what is often clearly separated as existing and intervening. The act of drawing the site is also an act of remaking the site. The section of the city is a hieroglyph to be deciphered and "completed." This "completion" …
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