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Now showing items 121-140 of 274
Analysis and design of a hydraulic compaction machine to produce activated carbon pellets
(University of Missouri--Columbia, 2014)
The influence of nanofiller particle size and surface treatment on dental composite
(University of Missouri--Columbia, 2014)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] In the present study, the effect of the size-scale combination of silica on the mechanical and optical properties of acrylate-based (50% BisEMA and 50% ...
Finite-element design of metamaterial beams for broadband wave absorption
(University of Missouri--Columbia, 2015)
Metamaterials were first introduced for dealing with electromagnetic waves. By creating a material with negative magnetic permeability and electric permittivity, it is possible to manufacture perfect optical lenses, ...
Prediction of surface roughness and diameter deviation in drilling ti-6al-4v alloy using artificial neural networks and Taguchi's design of experiments
(University of Missouri--Columbia, 2015)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Titanium and titanium alloys are excellent materials for aerospace applications owing to their high strength to weight ratio and excellent corrosion ...
Work cycle efficiency for a hydrostatic machine
(University of Missouri--Columbia, 2015)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] If the hydraulic Pump and motor are connected together through hydraulic hoses, the system is called a hydrostatic transmission or a hydrostatic drive. ...
Skydiving control system
(University of Missouri--Columbia, 2015)
Skydiving, the act of a person jumping out of an airplane (or aircraft) and landing safely on the ground, has been a common practice since the early 1900's. Throughout the history of skydiving, skydivers have used parachutes ...
Estimation of model states for a hydraulic valve system using an extended Kalman filter
(University of Missouri--Columbia, 2017)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Pilot valves are considered as one of most common types of valves in the industry today. They are widely-used because their design is simple, they are ...
Enhancement of the cooling performance of microchannel heat sinks
(University of Missouri--Columbia, 2016)
In this report, four different strategies to enhance the cooling performance of a micro pin fin heat sink are investigated and their effect to improve its cooling efficiency are examined. The employment of nanoparticles ...
A parametric study of a curved nuclear fuel plate in a narrow channel using numeric fluid structure interaction modeling
(University of Missouri--Columbia, 2017)
In 2004 the Global Threat Reduction Initiative (GTRI) was established by the National Nuclear Security Administration (NNSA) to quickly identify, secure, remove and/or closely monitor nuclear and radiological materials ...
Heat transfer enhancement of vapor condensation heat exchanger
(University of Missouri--Columbia, 2017)
A typical vapor condensation condenser consists of two major heat transfer processes, i.e., vapor condensation and forced convection. In order to enhance heat transfer, the condensation heat transfer utilizing the porous ...
Evaluation of modulus of polycaprolactone fused deposition modeling 3D printed tissue scaffolds
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Damage to the articular surface of the knee is a fairly common injury. In one study of 31,516 knee arthroscopies 61% of the patients featured chondral ...
Fabrication & testing of PCM impregnated drywalls for thermal energy storage
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] This research illustrates the fabrication and thermal behavior of gypsum drywall containing phase change materials (PCMs), which could be used in the ...
Heat and mass transfer of ambient air flowing over cold fins
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Moisture condensation takes place as ambient air is contacting a surface with a temperature lower than the dew point. In the current investigation, a ...
Liquid metal heat sink for laptop computers
(University of Missouri--Columbia, 2017)
With the rapid miniaturization of the electronic systems, heat generation in the components becomes a major concern for thermal management. The high density of heat generation can be a bottleneck to attain higher performance ...
On-plane flexible and solid-state rechargeable lithium-MnO2 microbatteries from laser induced graphene
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The thesis presents a flexible and solid state Li-MnO2 microbattery based on laser induced graphene (LIG) produced from commercial polyimide. To achieve ...
An integrated modeling approach for design and optimization of ejector pumps carrying two-phase fluid
(University of Missouri--Columbia, 2017)
An ejector pump uses a primary flow as a motive fluid to entrain another fluid, and can work with both incompressible flow and compressible flow, in either as a singlephase or two-phase mixture. Determining the behavior ...
Inlet metering pump analysis and experimental evaluation with application for flow control
(University of Missouri--Columbia, 2017)
Axial piston pumps with variable volumetric displacement are often used to control flow and pressure in hydraulic systems. The displacement control mechanism in these pumps occupies significant space and accounts for ...
Characterization of the Embolisher, a device for cerebral embolic protection
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Trans-catheter aortic valve implantation (TAVI) is a new, minimally invasive solution to replacing diseased aortic valves. However, some of residual ...
Modeling the inertial torque imbalance and foundation forces within an inline internal combustion engine : quantifying the equivalent mass approximation
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The main object of this dissertation is to study the dynamic analysis of an inline internal combustion engine. This dissertation presents the kinematics ...
Damping and stiffening forces of a squeeze-film between two plates
(University of Missouri--Columbia, 2016)
Silicon microstructures, especially sensors and actuators, are characterized by squeeze film between the moving elements and the fixed substrates. The effect of the squeeze film has been represented by the damping effect ...