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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 36 for “"Syringe Pump"”.
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An Automated Syringe Pump System For Improving The Reproducibility of Dynamic Hyperpolarized Mri Phantoms
<p>AN AUTOMATED SYRINGE PUMP SYSTEM FOR IMPROVING THE REPRODUCIBILITY OF DYNAMIC HYPERPOLARIZED MRI PHANTOMS</p> <p>Harlee Grace Harrison, B.S.</p> <p>Advisory Professor: James Bankson, Ph.D.</p> <p>Magnetic Resonance Imaging (MRI) is a powerful tool in the diagnosis of cancer due to its ability to …
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Validation of a Confocal Light Sheet Microscope using Push Broom Translation for Biomedical Applications
… (PDMS) microfluidic chamber with a syringe pump was used to deliver objects by the sensor. The volumetric rate of the pump was correlated to the integration time of the sensor to ensure images were realistically being formed, termed aspect ratio. An electro-chemical microfluidic …
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Vertical hydrodynamic focusing in an isotropically etched glass microfluidic device
… could be used to tune and correct the flow. A syringe pump-driven microfluidic device was fabricated out of isotropically etched and bonded glass plates and fluorescent confocal microscopy was used to verify computational models.
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Water-in Water (W/W) Emulsion Drug Delivery Systems
… such as an overhead paddle stirrer, manually pumping fluids between two syringes connected by a double-hub needle, and an emulsifier twin syringe pump were evaluated in terms of the polydispersity and/or average droplet sizes of the resulting emulsions. Optical microscopy images were examined …
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Development of an Integrated Microfluidic and TEER Measurement System for Static and Dynamic Blood–Brain Barrier Models
… device with integrated electrodes and a custom syringe pump system were developed to create flow conditions on both the apical and basolateral sides of the microfluidic device. A TEER measuring device was designed using S TM32F303K8 and ESP32 microcontrollers to perform 4-point probe …
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Design Principles and Preliminary Testing of a Micropropulsion Electrospray Thruster Research Platform
… acetone propellant flow is driven actively by a syringe pump. The second thruster, named the Research thruster, is operated in the vacuum environment and is designed for modularity for its expected use in future research efforts. Propellant flow is also driven actively using a syringe pump. …
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Portable iso-dielectrophoresis system
… of a RF frequency voltage source up to 24 V, syringe pumps, microscope, and computer. Much of this equipment is difficult to transport, making off-site sample collection of time-sensitive samples, such as blood, difficult. The miniaturization of the IDS system would allow measurements to take …
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Microfabrication methods for the study of chemotaxis
… have been studied: gravity feed system, dual-syringe pump feed system, and integrated individually-controlled peristaltic pump feed system. We were able to create spatially and temporally stable gradients using the dual-syringe feed setup. Two syringes were used to pump a chemokine and a …
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The design and characterization of a microcalorimeter to aid drug discovery
… controlled vacuum chamber, software, and a syringe pump were constructed to complete the calorimeter system. The current calorimeter prototype nearly meets each functional requirement. In addition, the current sensitivity of the instrument is near that of a commercially available calorimeter …
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Evaporative Vapor Deposition for Depositing 2D Materials
… angle is maintained using a computer controlled syringe pump. A room temperature silicon wafer is translated through the vapor field of the evaporating GO droplet using a computer controlled translation stage. Dropwise condensation formed on the silicon wafer is monitored using both optical and …
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The Study of 3D Micro-fluid Printing in Aqueous Two-phase System
… consists of a thermal extrusion 3D printer and a syringe-pump for dispensing the ink phase solution. Time-resolved imaging on the 2D pattern under UV light was used to study the stability of the structure in the matrix. The 3D printing performance of this printing system was tested based on the …
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Development of a High Precision Quantum Dot Synthesis Method Utilizing a Microfluidic Reactor and In-Line Fluorescence Flow Cell
… environment at 17°C. Using an NE-300<sup>®</sup> syringe pump, the solution was pumped through a microfluidic reactor submerged in a 240°C oil bath. The reactor then fed through a water quench bath at 25°C to terminate the nucleation and growth reaction. The fluorescence profiles of the quantum …
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Microfluidic temporal cell stimulation
… experiments involved either complex programmable syringe pump systems or physically moving a sample through a spatial gradient to create temporal changes [4, 5]. My device used computer-controlled elastomer valves to dynamically generate arbitrary concentration profiles with waveform periodicities …
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Approaching the Complexity of Biological Specimen: New Mass Spectrometry Concepts in Ambient Ionization and Proteomics
… is performed by constructing an automated syringe pump system, where the sharpened-LMJ-SSP can be inserted into a lime at a constant speed, while monitoring the change in product ion at m/z 133.0 and m/z 191.0. The change in product ion is successfully monitored and this investigation shows …
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Experimental Investigation of Jet Breakup at Low Weber Number
… from 5 to 110 was experimentally tested. A syringe pump was used to provide a constant flow rate and produce a jet at a given Weber number. The effects of surface tension and viscosity were investigated by using two viscous liquids (ethylene glycol and propylene glycol) apart from water. …
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Negative magnetophoresis of submicron species in magnetic nanofluids
… was used to generate the trapping forces, and a syringe pump was used to flow the mixture of magnetic fluid and nonmagnetic particles through the device. Size-based trapping was achieved for a feed mixture of 435 nm and 865 nm latex beads, as measured using fluorescence imaging. Semi-quantitative …
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Development of an electronic aerosol atomisation system for generating three-dimensional (3D) cells in microencapsulations and microtissues characterisation
… with the incorporation of a conventional syringe pump, a customised air pump and motor controller circuits. The microcapsules and 3D microtissues were biophysically characterised. For the output of the system, the microcapsules size slightly increased with the extrusion rates and decreased …
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Protein and cell therapy for lecithin-cholesterol acyltransferase (LCAT) deficiency
… alginate-polylysine microcapsules using a syringe pump extrusion method. A study in vitro showed that, after an initial lag phase, LCAT was secreted for over 90 days with the capsules remaining intact. These microencapsulated cells were implanted into peritoneal cavities of LCAT-deficient …
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Developing a 3D in vitro Model by Microfluidics
… as controlling the interstitial flow through a syringe pump. To demonstrate the effectiveness of our model, we further examine the migration of the MDA-MB-231 breast cancer cells in the porous <em>in vitro </em>model in the presence of a concentration gradient of fetal bovine serum (FBS) and …
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Dissolution of mixed uranium thorium oxides under geological disposal conditions
… delivering hydrogen peroxide using a syringe pump. It has been found that homogeneously mixed oxide pellets suppress the uranium dissolution by a factor of 10, as compared to end member uranium dioxide pellets, without affecting the consumption of hydrogen peroxide. The percentage of …
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