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Full-Text Articles in Life Sciences
Vitreoscilla Globin Promoter Cloning And Testing In Escherichia Coli, Lauren J. Coffey
Vitreoscilla Globin Promoter Cloning And Testing In Escherichia Coli, Lauren J. Coffey
Rose-Hulman Undergraduate Research Publications
No abstract provided.
Discrete-Position Solar Tracking For Photovoltaic System, Shengnan Hong, Zheng Fu, Richard E. Stamper
Discrete-Position Solar Tracking For Photovoltaic System, Shengnan Hong, Zheng Fu, Richard E. Stamper
Rose-Hulman Undergraduate Research Publications
The purpose of this research is to design a new tracking system for solar panels using the idea of discrete-position tracking. Compared with the traditional fixed solar panel, discrete-position trackers have a higher gain of harvesting solar radiation with smaller misalignment angles. Also, since we are trying to design the a passive tracker with solely mechanical structure to do the kinetics, a discrete-position tracker can decrease the cost of the maintenance to a huge extent in contrast to both one-axis and two-axis continuous tracking systems. The majority of the cost of maintaining a continuous tracker is the motor or hydraulic …
Mass Transfer Effects Of Particle Size On Brewing Espresso, Sichen Zhong, Lauren Elizabeth Stork
Mass Transfer Effects Of Particle Size On Brewing Espresso, Sichen Zhong, Lauren Elizabeth Stork
Rose-Hulman Undergraduate Research Publications
The extraction process for coffee is complicated due to the nature of the coffee. In this paper, we studied the particle size distribution for coffee grinds and further analyzed that with the help of an inverted microscope and a scanning electron microscope. We drew a conclusion that the coffee grinds can be divided into two parts: cell fragments with smaller particles size and intact coffee cells with larger particles. The intact coffee cell was found to be a porous media. Therefore, we tried to brew the espresso with both normal grind size coffee and sieved coffee to study the extraction …
Spontaneous Synchrony On Graphs And The Emergence Of Order From Disorder, Dylan Linville, Daniel Trugillo Martins Fontes
Spontaneous Synchrony On Graphs And The Emergence Of Order From Disorder, Dylan Linville, Daniel Trugillo Martins Fontes
Rose-Hulman Undergraduate Research Publications
From pulsars to pedestrians and bacteria to brain cells, objects that exhibit cyclical behavior, called oscillators, are found in a variety of different settings. When oscillators adjust their behavior in response to nearby oscillators, they often achieve a state of synchrony, in which they all have the same phase and frequency. Here, we explore the Kuramoto model, a simple and general model which describes oscillators as dynamical systems on a graph and has been used to study synchronization in systems ranging from firefly swarms to the power grid. We discuss analytical and numerical methods used to investigate the governing system …
Spectrally-Resolved Imaging Of The Transverse Modes In Multimode Vcsels, Stephan A. Misak, Dan G. Dugmore, Kirsten A. Middleton, Evan R. Hale, Kelly R. Farner, Kent D. Choquette, Paul O. Leisher
Spectrally-Resolved Imaging Of The Transverse Modes In Multimode Vcsels, Stephan A. Misak, Dan G. Dugmore, Kirsten A. Middleton, Evan R. Hale, Kelly R. Farner, Kent D. Choquette, Paul O. Leisher
Rose-Hulman Undergraduate Research Publications
Vertical-cavity surface-emitting lasers (VCSELs) enable a range of applications such as data transmission, trace sensing, atomic clocks, and optical mice. For many of these applications, the output power and beam quality are both critical (i.e. high output power with good beam quality is desired). Multi-mode VCSELs offer much higher power than single-mode devices, but this comes at the expense of lower beam quality. Directly observing the resolved mode structure of multi-mode VCSELs would enable engineers to better understand the underlying physics and help them to develop multi-mode devices with improved beam quality. In this work, a low-cost, high-resolution (<3 >pm) …