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 55 for “"Peristaltic"”.
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Fluid motions in a peristaltic pump.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1966. M.S.
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Experimental and theoretical pressure studies of peristaltic pumping,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1970.
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Development of an electrostatic peristaltic gas micropump and nanochannel fabrication technique
… development of an electrostatic valve-less peristaltic micropump for gas pumping is discussed. The micropump consists of a Si chamber and a flexible polymer diaphragm. Electrodes are patterned on a chamber floor and on a diaphragm. A 4-sequence signal made by a custom-made logic circuit …
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An analytic investigation of flow and hemolysis in peristaltic-type blood pumps,
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1970
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A theoretical and experimental treatment of peristaltic pumping and its relation to ureteral function.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1970
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Design and Validation of an Accessible and 3D-Printable 24-Channel Peristaltic Pump for Cell Culture Research
Peristaltic pumps are an essential part of biomedical research worldwide. The peristaltic pumps used for cell culture are precise and accurate machines which cycle media to and from cells during experiments. Commercial peristaltic pumps pose barriers for all labs due to expensive purchase and …
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Neuronal plasticity in the enteric nervous system motor pathways
… however, recent studies suggest that the peristaltic motor pattern can occur during nicotinic receptor blockade. The aim of this thesis was to determine if electrical stimulation of the enteric nerves improved recovery during nicotinic blockade. Two segments of proximal ileum measuring …
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A Biologically Inspired Soft-Bodied Bellows-Driven Stomach Robot: Concept, Design and Validation
… The mechanical digestion is controlled by peristaltic waves generated over the stomach body. The physiological digestion of a stomach is essential to sustain nutrition and health in humans. Replicating the digestion process in a robot has been essential to provide a test environment as an …
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COMPARATIVE STUDY ON DROSOPHILA LARVAL LOCOMOTION AND NEUROMUSCULAR JUNCTION MORPHOLOGY
… these phenotypic differences. We describe larval peristaltic crawling in terms of speed, rate of contractions and dispersal efficiency. Comparisons across species show species-specific pattern of larval locomotion. Quantitative analyses on the NMJ anatomy reveal that the pattern of NMJ morphology …
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A Molecular Basis for Macrophage Control of Enteric Nervous System Function
Peristaltic movement of the intestine propels food down the length of the gastrointestinal tract to promote nutrient absorption. Interactions between intestinal macrophages and the enteric nervous system regulate gastrointestinal motility, yet we have an incomplete understanding of the molecular …
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The use of soft lithography to reproduce snail-like movement by creating pressure gradients in thin films
… required a new method for producing waves. Peristaltic pumping achieved through the use of soft-lithography and pneumatics was the method chosen. This combination of ideas proved challenging for several reasons. First, the pumping method had previously only been used with one channel per …
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Intrinsic Neural Control of Propulsion, Storage and Slow Transit in the Large Intestine.
… This activity has been referred to as ongoing peristaltic reflex activity. The sensory elements underlying the repetitive firing of ascending excitatory and descending inhibitory neuronal pathways lie in the CM, in close opposition to the myenteric plexus. Mechanosensitive ion channels present …
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Design Exploration for Biological Fluid Sampling Platform
This work explores the design of an implantable, peristaltic pumping platform for chronic sampling of neuropeptides. The project drew inspiration from a pumping platform previously developed in the Cima Lab. Users have reported that the previous platform is difficult to use. The pump is also nearly …
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Integrated microbioreactor arrays for high-throughput experimentation
… format. The devices comprise a novel peristaltic oxygenating mixer and microfluidic injectors, which are fabricated using a process that allows combining multiple scale (100/,m-lcm) and multiple depth (100/im-2mm) structures in a single mold.
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Metering and Routing of Liquid Quanta in Microfluidic Devices
… and (v) the combining of multiple microfluidic peristaltic pumps into a multiplexed arrangement, allowing for many pumps to be controlled by a limited number of external pneumatic connections. These techniques were integrated to create an overall microfluidic droplet routing platform, capable of …
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Enhancing the Performance of Skeletal Muscle Powered Biohybrid Robots
… of movements such as fish-like swimming and peristaltic pumping. However, long-lasting 2D cultures of skeletal muscle have been precluded by force-generating cells delaminating from their underlying substrate. Building on previous work from our lab demonstrating a method to culture …
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SOFT WORM ROBOT: LOCOMOTION CHARACTERISTICS AND SENSING FOR AGRICULTURAL ROBOTICS
… by the movement of earthworms, this robot uses peristaltic movement for efficient and adaptable mobility. Equipped with multiple sensors, including temperature, humidity, and vision sensors, this worm robot eliminates the need for numerous stationary sensors. Thus, the overall objective of this …
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Portable iso-dielectrophoresis system
… pump, including air pressure regulated pumps and peristaltic pumps, were considered for the fluidic component.
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Interconnection, Interface And Instrumentation For Micromachined Chemical Sensors
… examined and accordingly, syringe containers, a peristaltic pump and pinch valves were assembled to compose a reliable meso-scale fluidic control unit. A potentiostat circuit was modeled using a simulation tool. The simulated output showed its usability toward three-electrode electrochemical …
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Design and evaluation of a modified in situ mesocosm to study denitrification in the Karlsruhe aquifer
… at depths greater than those attainable using a peristaltic pump from the ground surface. Two ISMs, one the original design (0-ISM) and the other the modified design (M-ISM) with an optional submersible pump, were installed in the Karlsruhe aquifer, near Minot, ND, in late June, 2003. Tracer …
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