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 41 for “"tightly packed"”.
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Heat Transfer In Tightly Packed Cylinder Arrays
… aviation is to use cylindrical batteries packed in arrays with an applied cross flow. In the context of aviation, it is important to maximize space and weight savings. Tightly packing these cylinder arrays with a spacing of under 2D in both directions would save on both of these yet have …
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Experimental Investigation of Heat Transfer to Tightly Packed Cylinder Arrays
… power and decreased cooling efficiency. The tightly packed array of typical battery packs poses a unique challenge to effective cooling during demanding phases of aircraft flight and relies on a geometric configuration not characterized in the literature. Greater knowledge of these battery …
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Rapid contour determination using a floating pin matrix
… pin to a computer. The pin matrix is a bed of tightly packed cylinders that can move in the axial direction independent of each other. When the pin matrix is pushed against a certain surface, each pin moves into contact with the surface, correlating the axial displacement of each pin to the …
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Interactions between molecules and nanostructures using quartz crystal microbalance
… of BSA occurs in a self-assemble like manner, a tightly packed monolayer. More BSA areal mass is adsorbed on PTS QCM (15%) and high roughness QCM (17%) resonators than QCM samples with standard roughness. In contrast with standard QCM, high roughness QCM resonators induce aggregates on the …
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Unexpected mechanical properties of nucleic acids
… DNA that stores genetic information is tightly packed inside cell nuclei, even though DNA is considered to be a relatively stiff biopolymer. However, recent experiments suggest that DNA may be more flexible than its persistence length (~ 150 bp or ~ 47 nm) suggests, especially for …
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Conductive PEDOT:PSS fibres for modelling and assessing oligodendrocyte ensheathment
… their capacity to ensheath neuronal axons with tightly packed, multi-layered cell membranes, forming the myelin sheath. This myelin sheath plays a pivotal role as an insulating layer surrounding neuronal axons. It effectively segregates the conductive environments inside and outside neuronal …
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Genetic Engineering of Functional Large Amyloid Fibers
… Gd20:P7Q template:adder protein mixture produces tightly packed ~0.3 μm high and ~1.9 μm wide fibers that exhibit a low retraction force of ~44 nN after indentation. The Gd20:P7S mixture produces larger ~1.1 μm high and ~9.7 μm wide fibers exhibiting a much higher retraction force of ~503 nN …
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High green density metal parts by vibrational compaction of dry powder in three dimensional printing process
… of the printed part, and is a measure of how tightly packed the powder particles in the printed part are. The central goal of this thesis was to increase the green density of metal parts from the current level of 58% to levels greater than 75%. Two approaches were taken for increasing green …
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An Investigation on Acoustic Metamaterial Physics to Inspire the Design of Novel Aircraft Engine Liners
… task in an industry that requires low weight and tightly-packed solutions. Without innovative advancements, the technology currently used will not be able to keep up with the increasingly stringent requirements on aircraft noise reduction. A need exists for novel technologies that will pave the …
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A comparison of Scottish and Norwegian hutting traditions, with particular reference to the communities of Carbeth and Lindøya 1905-2013
… thwarted the expansion of hutting here beyond tightly packed, working class communities to the widely scattered, individually-sited cabins favoured by most Norwegians. This research suggests these different traditions are the result of similar political, economic and social forces coming to …
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Synthesis and Characterization of Pillared Graphene and Holey Graphene
… holey graphenes comprise grains that are very tightly packed and compact. The low-resolution SEM micrographs confirm the XRD results, that the materials are amorphous. TEM analysis confirmed the presence of pores in the holey graphene - hrGOFC0.15, hGOMC0.15, and hrGOOC0.15 layers; therefore, …
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Periodic Mesoporous Organosilica: Preparation Characterization and Applications of Novel Materials
… spectra. Powder XRD patterns suggest that a tightly packed asymmetric biphenylene arrangement may be necessary for the optical activity. Preliminary results using these materials as a chiral chromatographic phase are promising. Finally, a thin film morphology of an ethane-bridged PMO …
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The Structure of 4-Clusters in Fullerenes
… faces of an independent set of benzene rings are packed together as tightly as possible. Starting with such a patch and extending it as far as possible results in a "perfect" Kekule structure except for isolated regions, called clusters, containing the pentagonal faces. It has been shown that …
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Design optimization for 2-D granular media with dissipation
… compression and to ensure that all the beads are tightly packed, an upper bound on the initial plastic compression is imposed to limit the amount of plastic deformation between the beads. To evaluate the response, we perform a transient analysis using an explicit Runge-Kutta algorith with an …
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The Reproductive biology of Erica pudens
… syndrome. These characteristics include tightly-packed, pendulous inflorescences with a prostrate habit, found close to the floor, with a dull flower colour and winter flowering times. This research also found that E. pudens offers a high volume of nectar per floral head (up to 20.9μl) …
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Large-Scale Optical Hardware for Neural Network Inference Acceleration
… for long data transfer lengths, but not in tightly packed electronic multiplier arrays. Therefore, in a second project, we expanded upon this work by performing reconfigurable optical multicast and analog optoelectronic weighting to compute DNN layer outputs in a single shot. Our …
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PREDICTING THE USABILITY OF ALPHANUMERIC DISPLAYS
… of local density, which is essentially how "tightly packed" the display is, and a measure of layout complexity, which is essentially how well the items on the display are aligned with each other.
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PhoQ: Structural and Mechanistic Investigations into an Important Bacterial Sensor Kinase
… striking feature characterized by a group of tightly packed helices that sharply diverge at one end of the bundle to form a pocket that allows water molecules to penetrate into the core of the protein. We used the inferred homology between HtrII and PhoQ to create a model of the TM domain of …
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A CHARACTERIZATION OF THE BACTERIOPHAGE 41C AND ITS LYTIC CYCLE IN BACILLUS SUBTILIS 168
… phage structures, a marked rearrangement of the tightly packed, vesicular mesosomes was usually seen within the host cells. These mesosomes opened up into loosely arranged, lamellar forms. As phage accumulated, they appeared to be preferentially associated with the mesosomes. Towards the later …
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Rational design of synthetic metalloproteins
… 3 explored the effect of systematically repacked hydrophobic core on both structural properties and metal-binding abilities of the resulting coiled coils. A series of coiled coils was designed to contain a similar Cys-X-X-Cys metal-binding site but different combinations of …
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