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.
Results
Showing 1 to 20 of 38 for “"coiling"”.
-
Coiling and clipping in Aneurysmal Subarachnoid Hemorrhage
… and the clinical outcomes of endovascular coiling and neurosurgical clipping treatments in patients with aneurysmal SAH. <br>Material and Methods: This retrospective study analysed 322 patients with aneurysmal SAH which were treated between 1992 and 2003 at the University Hospital Freiburg. …
-
Coiling of elastic rods on rigid substrates
… onto a rigid substrate and study the resulting coiling patterns. In our approach, we combine precision model experiments, scaling analyses, and computer simulations towards developing predictive understanding of the coiling process. Both cases of deposition onto static and moving substrates are …
-
Jet impingement boiling heat transfer at low coiling temperatures
… cooling. Advanced high strength steels require coiling at temperatures below 500 °C in order to produce a complex multi-phase microstructure. The research described here will investigate the boiling conditions that occur for moving plate experiments when steel is cooled towards low coiling …
-
3D Coiling at the Protrusion Tip: New Perspectives on How Cancer Cells Sense Their Fibrous Surroundings
… that cancer cells sense individual fibers by coiling (i.e. wrapping around the fiber axis) at the tip of a cell protrusion. We find that coiling dynamics are mediated by both the fiber curvature and the metastatic capacity of the cancer cells with less aggressive cancer cells showing …
-
Cognitive outcome of aneurysmal subarachnoid haemorrhage after clipping or coiling : a comparative post intervention study in a hospital population
… treated with surgical clipping or endovascular coiling. Twenty-four patients with aneurysmal subarachnoid haemorrhage treated by clipping or coiling were retrospectively assessed by use of a battery of cognitive tests and a quality of life questionnaire. All patients had favourable grades on …
-
Host use and foraging in the parasitic plant Cuscuta subinclusa.
… marginal value theorem (MVT) in that: (1) stem coiling, the necessary antecedent and determinant of resource uptake, precedes exploitation of host materials; and (2) mean coiling on a host species is proportional to: (a) mean growth/haustorium, (b) mean biomass accumulation over the season, and …
-
Haptic Simulation in Cerebral Angiography: Establishing New Clinical Competency Targets
… associated with vascular navigation and aneurysm coiling. The results of our studies suggest that navigational skills in simulation-based diagnostic angiography training could be improved with independent practice. Furthermore, navigational competency was strongly linked to mental rotation …
-
Experimental porcine models of retinal ischemia
… occlusion, and a liquid embolic agent or coiling for permanent occlusion. The degree of ischaemia depended on the location of the occlusion. Occlusion of the proximal part of the ophthalmic artery caused little or no ischaemic effect, presumably due to collateral blood supply. Coiling of …
-
Characterization of industrial flocculants through intrinsic viscosity measurements
… assumed a coiled conformation, and further coiling was observed in the presence of small quantities of calcium chloride. CaC1₂ (0.001 mo1/L) There was a decrease in intrinsic viscosities at high pH (~8.5 and 10.5) that was merely attributed to an increase in ionic strength with the increase …
-
The Role of Estrogen Receptor Alpha in Epididymal Sperm Structure and Function
… epididymis were found to have abnormal axoneme coiling and increased incidence of spontaneous acrosome reactions, both of which are consistent with defective regulation of the epididymal fluid. This was confirmed by incubating ERalphaKO sperm in a more wildtype-like osmotic environment, which …
-
Active and Passive Settling By Marine Benthic Nematodes
… sp? does not swim, its active behavior, coiling ability, a body length over 1 mm, and weak adhesive glands may be factors that enable or enhance its settling rate over attractive sediments or retard settling rates over unattractive sediments.</p>
-
Instabilities of jets of non-Newtonian fluids impacting a plate
The problem of buckling and coiling of jets of viscous, Newtonian liquids impacting a plate has received a substantial level of attention over the past two decades, both from experimental and theoretical points of view. Nevertheless, most industrial and everyday life fluids are non-newtonian, and …
-
New Zealand late miocene biostratigraphy and biochronology: Studies of planktic foraminifers and bolboforms at oceanic sites 593 and 1123, and selected onland sections
… highest and lowest occurrences, acme zones, and coiling zones - that are potentially useful for the correlation and subdivision of the late Miocene in New Zealand. It has also enabled these bioevents to be correlated with the excellent paleomagnetic record at ODP Site 1123 (Wilson et al. in …
-
Aspects of Neogene palaeoceanography in the southern Tasman Sea (DSDP site 593)
… a planktic foraminifera which exhibits distinct coiling excursions, where the dominant shell coiling direction changes from sinistral, which dominates the record, to dextral over very short intervals. Coiling direction changes in other species have been linked to water temperature. The δ¹⁸O data …
-
Submanifold Helicity
… helicity. Helicity gives us a way to measure the coiling of flow lines in a vector field, computed by the formula [see formula in PDF file] . To start our exploration of helicity we begin with the topic of differential forms and their correspondence with vector fields in R 3 . Then we use the …
-
The Future is Now in Twisted Coil Polymer Actuators (TCPA)
… and tension through the four steps, measuring, coiling, annealing, and testing the TCPA fibers.</p> <p>This thesis has built a foundation that can be used to fabricate TCPA fibers from nylon and evaluate their mechanical and thermal behavior while being measured within the LVDT sensor. The …
-
Phase separation spinning of polypropylene fibers
… The fibers exhibited good hand bulk, and self-coiling and crimping characteristics.
-
Planktonic foraminifera in the sea of Okhotsk : population and stable isotopic analysis from a sediment trap
… finding, with the N. pachyderma left-to-right coiling ratios >98% for the entire trap deployment. These ratios would suggest maximum seasonal SST's no greater than 10°C, nearly 5°C colder than the actual sea surface temperature maximum. The results from this study indicate that in highly …
-
Geometrically nonlinear configurations in rod-like structures
… belt) and quantify the resulting nonlinear coiling patterns. The DER method is employed to identify the phase boundaries between different patterns and characterize the morphology. Our results are interpreted using a reduced geometric model for the evolution of the position of the contact …
Page 1 of 2