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Physical Sciences and Mathematics Commons™
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- Agricultural engineering (2)
- Algae (2)
- Biodiesel (2)
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Articles 1 - 13 of 13
Full-Text Articles in Physical Sciences and Mathematics
Architecture, Modeling, And Analysis Of A Plasma Impedance Probe, Magathi Jayaram
Architecture, Modeling, And Analysis Of A Plasma Impedance Probe, Magathi Jayaram
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Variations in ionospheric plasma density can cause large amplitude and phase changes in the radio waves passing through this region. Ionospheric weather can have detrimental effects on several communication systems, including radars, navigation systems such as the Global Positioning Sytem (GPS), and high-frequency communications. As a result, creating models of the ionospheric density is of paramount interest to scientists working in the field of satellite communication.
Numerous empirical and theoretical models have been developed to study the upper atmosphere climatology and weather. Multiple measurements of plasma density over a region are of marked importance while creating these models. The lack …
Spatial Light Dilution As A Technique For Conversion Of Solar Energy To Algal Biomass, Daniel J. Dye
Spatial Light Dilution As A Technique For Conversion Of Solar Energy To Algal Biomass, Daniel J. Dye
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A photobioreactor has been designed and developed to efficiently utilize solar irradiance through spatial dilution of sunlight. The concept of spatial light dilution is simple: incident sunlight is spread over a large surface area, thus reducing the photon flux density of the light. The implementation of this technique, however, is difficult. The reactor described within uses a new approach to spatial light dilution, utilizing recently-developed optical components to diffuse concentrated sunlight inside an algae culture. Preliminary productivity tests indicate a 2-3 fold increase in productivity per unit aperture (sunlight collection area) over a control reactor with direct-sunlight. Aperture productivity of …
Earth Systems Lesson Plan: Size And Forces Of The Solar System, Getaway Special Team 2010
Earth Systems Lesson Plan: Size And Forces Of The Solar System, Getaway Special Team 2010
Education and Outreach
No abstract provided.
Elementary And Middle School Science Lesson Plan: Solid, Liquid, Gas, What Is It?, Getaway Special Team 2010
Elementary And Middle School Science Lesson Plan: Solid, Liquid, Gas, What Is It?, Getaway Special Team 2010
Education and Outreach
No abstract provided.
Physics Lesson Plan: How Far And Fast Does It Travel?, Getaway Special Team 2010
Physics Lesson Plan: How Far And Fast Does It Travel?, Getaway Special Team 2010
Education and Outreach
No abstract provided.
A Synthetic Biological Engineering Approach To Secretion- Based Recovery Of Polyhydroxyalkanoates And Other Cellular Products, Elisabeth Linton
A Synthetic Biological Engineering Approach To Secretion- Based Recovery Of Polyhydroxyalkanoates And Other Cellular Products, Elisabeth Linton
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The costs associated with cellular product recovery commonly account for as much as 80% of the total production expense. As a specific example, significant recovery costs limit commercial use of polyhydroxyalkanoates (PHA), which comprise a class of microbially-accumulated polyesters. PHAs are biodegradable compounds that are of interest as a sustainable alternative to petrochemically-derived plastics. Secretion-based recovery of PHAs was studied to decrease PHA production costs. Type I and II secretory pathways are commonly used for the translocation of recombinant proteins out of the cytoplasm of E. coli. Proteins were targeted for translocation using four signal peptides (HlyA, TorA, GeneIII, …
Nutrient Utilization From Anaerobic Digester Effluent Through Algae Cultivation, Shantanu Wahal
Nutrient Utilization From Anaerobic Digester Effluent Through Algae Cultivation, Shantanu Wahal
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Nutrients present in digested animal waste can be utilized for algae cultivation under suitable conditions. Algal growth, however, depends on the chemical forms and speciation of these nutrients. In this study a chemical equilibrium model was first used to describe nutrient speciation and predict conditions that enhance the solubility of nutrients in anaerobic digester effluent. Dilution with water and separation of large particulates greatly improved nutrient availability and light penetration - conditions favorable for algal cultivation. Algae growth was tested using three strains - Scenedesmus dimorphous (UTEX # 417), Chlorella vulgaris (UTEX# 265), and an algal isolate (designated as LLAI …
Follow Up Nucleate Boiling On-Flight Experiment, Andrew Fassmann
Follow Up Nucleate Boiling On-Flight Experiment, Andrew Fassmann
Presentations
No abstract provided.
Gravitational Effects On Thin-Wire Subcooled Nucleate Boiling Dynamics, Justin Koeln, Andrew Fassmann, Troy Munro, Rob Barnett
Gravitational Effects On Thin-Wire Subcooled Nucleate Boiling Dynamics, Justin Koeln, Andrew Fassmann, Troy Munro, Rob Barnett
Presentations
No abstract provided.
Gravitational Effects On Thin-Wire Subcooled Nucleate Boiling Dynamics, Justin Koeln, Andrew Fassmann, Troy Munro, Rob Barnett
Gravitational Effects On Thin-Wire Subcooled Nucleate Boiling Dynamics, Justin Koeln, Andrew Fassmann, Troy Munro, Rob Barnett
Education and Outreach
No abstract provided.
Spacecraft Coating-Induced Charging: A Materials And Modeling Study Of Environmental Extreme, Michelle M. Donegan, Jennifer L. Sample, John R. Dennison, R. Hoffman
Spacecraft Coating-Induced Charging: A Materials And Modeling Study Of Environmental Extreme, Michelle M. Donegan, Jennifer L. Sample, John R. Dennison, R. Hoffman
All Physics Faculty Publications
As mankind reaches to explore extreme environments in space, the application of ceramics surface coatings is increasing. The 2005 mission concept for Solar Probe used a unique design to achieve the necessary thermal control for a very close approach to the solar corona, including the use of a highly refractory, electrically insulating ceramic coating over a carbon-carbon composite heat shield. The proposed trajectory takes the spacecraft from a Jovian fly-by to within 4 solar radii of the Sun, spanning 5 orders of magnitude in solar radiation and solar wind plasma density as well as spacecraft temperatures from <100 K to >2000 K. Using …100>
The Gas Team And Nasa (Aka Boil, Boil, Toil And Trouble), Get Away Special Team 2010
The Gas Team And Nasa (Aka Boil, Boil, Toil And Trouble), Get Away Special Team 2010
Education and Outreach
No abstract provided.
Funboe (Follow-Up Nucleate Boiling On-Flight Experiment), Getaway Special Team 2010
Funboe (Follow-Up Nucleate Boiling On-Flight Experiment), Getaway Special Team 2010
Education and Outreach
No abstract provided.