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Showing 1 to 20 of 23 for “"Peristaltic Pump"”.
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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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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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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
… design also includes an optional submersible pump mounted on top of the ISM chamber, making it capable of applications 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) …
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Microfabrication methods for the study of chemotaxis
… 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 buffer in …
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Design, measurement, and analysis of oxygenated fluid pump system
… opportunity to design and implement a system for pumping oxygenated fluid and mixing it with saline, for the purpose of providing sufficient levels of oxygen for patients undergoing forms of asphyxia. The machine is able to pump oxygenated fluid by means of a low-density polyurethane bellows, …
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Temporal and Spatial Variability of Phytoplankton Biomass in Coastal Mississippi Waters
… nutrient samples were taken by hand and peristaltic pump at each station. River discharge, tidal change, current and wind data was collected from various monitoring stations operated by Federal Agencies (USGS, NOAA, and NRL). Transect data was broken down into three sections (Inner Sound, …
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Novel pump for flow chemistry applications with increased reliability
Commercial pumps tested at MIT's Jensen lab for applications pumping highly corrosive materials at medium pressure (100-300 psi) and a low flow rate (less than 50 mL/min) have proven unreliable. The most common failures observed have been check valve failure and insufficient chemical compatibility. …
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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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The effects of Hydroxypropyl-β-Cyclodextrin on the American Flagfish (Jordanella floridae) over one complete life-cycle
… 500, and 1600 μg/L of HPβCD maintained via a peristaltic pump. No significant differences were observed in growth, condition factor (K) and hepatosomatic index (HSI) when chronically exposed to HPβCD (P ≤ 0.05). A significant increase in female gonadosomatic index (GSI) occurred in those …
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Experimental and analytical investigation of a new integrated reactor for hydrogen and methanol production with ocean carbon dioxide
… exergetic sustainability index compared to the peristaltic pump under ambient pressures ranging from 100 to 1000 kPa. In methane production tests using an H-cell setup, 1.5 M electrolyte yields the highest output, reaching 900 ppm during early stages. H-cell methanol synthesis, confirms via the …
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Carbon and electron flow via methanogenesis, So₄²⁻, NO₃⁻ and Fe³⁺ reduction in the anoxic hypolimnia of upper Mystic Lake
… gases involved filling glass bottles with water pumped from depth using a peristaltic pump; however, such methods introduce the potential for gas exchange with the atmosphere. Therefore, there was a need for a dissolved gas sampler that could be used to obtain samples at precise depth intervals …
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A decision support method for selecting design and manufacturing alternatives
… manufacturing technology selection, choosing a peristaltic pump, selection of a swivel joint design, and the justification of advanced manufacturing systems, possessed the characteristics of the type of problems this tool is intended to support. The case studies showed how it is possible to …
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The Signal in the Noise: Understanding and Mitigating Decorrelation in Particle Image Velocimetry
… prevailing understanding of the heart as a peristaltic pump that produces directional flows. Our results suggest that flow production in insect hearts may be more complex than once thought (chapter 3).
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Methods and Implementation of Fluid-Structure Interaction Modeling into an Industry-Accepted Design Tool
… complex fluid and solid phenomena involved in a peristaltic pump where the goal was to demonstrate that the lifetime performance of the tubing could be altered by changing the geometry, material properties, and operating temperature. The model in this final study combined all the methods and …
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The development of methods and equipment for the study of the aerating capabilities of a microdispersion of air in water
… the cell via double-ended shutoff valves and a peristaltic pump. Hydraulic conductivities were monitored to observe variations in fluid flow following the injection of CGA/sparged air. The main conclusions of this work are: l. Both CGA and sparged air introduce dramatic increases in groundwater …
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Aggregation in Anurida maritima
… to their natural environment as possible. A peristaltic pump was controlled by a Raspberry Pi so that Animals survived for a longer period in the artificial beach environment than in petri dishes or Specimen Bottles. 1.5 Conclusions An artificial beach environment appears to be more conducive …
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Implementation of Physiologic Pressure Conditions in a Blood Vessel Mimic Bioreactor System
… wave was created by setting the degree of pump tubing occlusion on the 3-roller peristaltic pump head and using a water column to backpressure the bioreactor chamber. Maintaining a desired backpressure within the system necessitated the development of a new bioreactor chamber with increased …
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Investigation of a Spinning Disc as a Thin Film Photocatalytic Reactor for the Degradation of Recalcitrant Wastewaters
… likely the result of periodic forcing from the peristaltic pump enhancing the adsorption of the oxygen and/or enhanced electron transfer from the catalyst to the oxygen. Adsorption of oxygen and/or electron transfer to the oxygen are often found to be the rate limiting step in photocatalytic …
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Development of a processing technology for the in-situ fortification of nixtamalized corn in rural Guatemala
… of iron into pellets was accomplished by using a peristaltic pump. Iron fortification solutions containing 92.25 mg/mL and 150 mg/mL of NaFeEDTA and ferrous bisglycinate, respectively, were directly pumped into feeding end of the extruder. NC was cooked using a traditional recipe (1% lime, 2 h …
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