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Now showing items 141-150 of 171
Orientation of collagen fibers by mechanical transduction on osteoblastic cells
(2011)
MC3T3-E1 Osteoblastic cells were mechanically stimulated using a static load of 3, 6 and 9 lb during 2, 4, 6 and 8 days of incubation. The Collagen Type I expression rate was analyzed using the Near Infrared Microscope ...
Design and characterization of passive wireless strain sensor
(2006)
In order to predict and avoid disasters due to the structure failure, reliable strain information is necessary to be monitored in real time. Existing strain sensing technologies offer outstanding performance in terms of ...
Assessment of a Au-Sn transient liquid die attach for harsh environments electronics
(2018-05)
The constant development of new technologies in the area of power electronics requires new interconnection materials capable of resisting high temperature environments for wide-bandgap semiconductors such as SiC. Die attach ...
Single sub-micron structures testing platform for chemiresistive gas sensors: Microfabrication process design and assembly by lift method
(2020-03-04)
Devices built at the micro and nanoscales, with high-throughput capability utilizing microfabrication methods, are traditionally achieved by photolithography. In the past decade Metal oxide Semiconductors (MOS) research ...
Damage detection and identification in sandwich composites using neural networks
(2005)
Marine, aerospace, ground and civil structures can receive unexpected loading that may compromise integrity during their life span. Therefore, improvement in detecting damage can save revenue and lives depending upon the ...
Detection of climate changes over the global and Caribbean basin
(2007)
The statistical test developed in this research was able to find punctual changes at any time series. In this way the studied variables including sunspot, global carbon dioxide, air surface temperature, cloud cover and sea ...
Numerical study of transport processes in the gas diffusion media of a fuel cell
(2009-12)
Fuel cells, widely regarded as the 21st century energy-conversion devices, convert chemical energy directly into electricity with high energy density at low operating temperature, good performance operation, and high ...
Surface response analysis of electrospun nanofiber beads
(2007)
The research presented in this document is focused on using the surface response method to analyze the nanofiber beads Polyethylene Oxide (PEO) synthesized by electrospinning. The process was characterized in detail by ...
Development of a variable diameter wheel for motion transmission
(2009-05)
In this work a variable diameter wheel (VDW) is presented. Two VDWs are combined in a manner where motion can be transmitted between these VDWs. The scope is limited to a kinematics analysis of a mechanism consisting of ...
Design and manufacture of a linear fresnel reflector prototype for coffee drying applications in Puerto Rico
(2014)
The need and desire to use renewable, sustainable, and efficient energy have led to increased research
in this field as the long term consequences of not doing so will affect the environment. As an alternative
to drying ...