Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

California Polytechnic State University, San Luis Obispo

Series

STAR (STEM Teacher and Researcher) Presentations

Articles 1 - 30 of 134

Full-Text Articles in Life Sciences

Method Development For Structural Assessment Of Nanolipoprotein Particles With And Without Cross-Linked Lipids, Emma J. Mullen, Wei He, Sean Gilmore, Matthias Frank, Matthew Coleman, Megan Shelby Jan 2019

Method Development For Structural Assessment Of Nanolipoprotein Particles With And Without Cross-Linked Lipids, Emma J. Mullen, Wei He, Sean Gilmore, Matthias Frank, Matthew Coleman, Megan Shelby

STAR (STEM Teacher and Researcher) Presentations

Membrane proteins make up approximately 30% of the cellular proteome and account for over 60% of pharmaceutical targets.1 Determining the structures of this class of proteins is critical to our understanding of disease states and will advance rational drug design. But membrane proteins have limited solubility, rarely form large crystals that diffract well, and often misfold outside of a bilayer, hindering crystallographic studies.1 Nanolipoprotein particles (NLPs) have arisen as a platform to readily solubilize membrane proteins while mimicking a native lipid environment. NLPs consist of a discoidal phospholipid bilayer encircled by an apolipoprotein belt. In an effort to ...


Adapting Cell-Free Protein Synthesis As A Platform Technology For Education, Grace W. Chu, Max Z. Levine, Nicole E. Gregorio, Javin P. Oza Oct 2018

Adapting Cell-Free Protein Synthesis As A Platform Technology For Education, Grace W. Chu, Max Z. Levine, Nicole E. Gregorio, Javin P. Oza

STAR (STEM Teacher and Researcher) Presentations

Cell-free protein synthesis (CFPS) has emerged as an enabling biotechnology for research and biomanufacturing as it allows for the production of protein without the need for a living cell. Applications of CFPS include the construction of libraries for functional genomics and structural biology, the production of personalized medicine, and the expression of virus-like particles. The absence of a cell wall provides an open platform for direct manipulation of the reaction conditions and biological machinery. This project focuses on adapting the CFPS biotechnology to the classroom, making a hands-on bioengineering approach to learning protein synthesis accessible to students grades K-16 through ...


Comparison Of An Endangered Species’ Seed Bank Before And After Ungulate Removal, Melanie K. Phillips, Kathryn Mceachern Sep 2018

Comparison Of An Endangered Species’ Seed Bank Before And After Ungulate Removal, Melanie K. Phillips, Kathryn Mceachern

STAR (STEM Teacher and Researcher) Presentations

The purpose of this study was to assess the impact of the removal of ungulates on the soil seed bank of the endemic Santa Rosa Island manzanita (Arctostaphylos confertiflora). A. confertiflora was trampled and browsed by non-native ungulates between the years 1850 and 2011 which reduced its ability to produce seeds.This species is an obligate seeder, meaning that sprouting from seeds in the soil is its only method of reproduction. Due in part to the lack of its soil seed bank, this species was federally listed as endangered by the US Fish and Wildlife Service in 1997. In order ...


Influence Of A Guanidine Riboswitch In Bacterial Cells, Erik S. Timsak, Jefferey A. Kimbrel, Chris S. Ward, Rhona K. Stuart, Michael P. Thelen Aug 2018

Influence Of A Guanidine Riboswitch In Bacterial Cells, Erik S. Timsak, Jefferey A. Kimbrel, Chris S. Ward, Rhona K. Stuart, Michael P. Thelen

STAR (STEM Teacher and Researcher) Presentations

Bacteria live in environments containing complex ecologies of other microbes that communicate and survive through the action of a variety of small metabolic compounds. One common yet relatively unstudied metabolite is guanidine. Although it can be toxic to cells, recent studies have revealed that guanidine may function as a cellular metabolite through a specialized RNA sequence known as a riboswitch. Within our overall project on improving algal productivity, the focus of this study is to: (a) describe various guanidine riboswitch sequences in bacteria that interact with biofuel producing algae; and (b) determine if guanidine has a positive or negative influence ...


Tof-Sims Analysis Of Plant Seed Interactions With Plant Growth-Promoting Bacteria, Tammy Pheuphong, Rachel Komorek, Xiao-Ying Yu Aug 2018

Tof-Sims Analysis Of Plant Seed Interactions With Plant Growth-Promoting Bacteria, Tammy Pheuphong, Rachel Komorek, Xiao-Ying Yu

STAR (STEM Teacher and Researcher) Presentations

The use of time-of-flight secondary ion mass spectrometry (ToF-SIMS) in plant biology is a relatively unexplored and quickly developing field. The majority of research in plant SIMS involves the application of ToF-SIMS to study dried wood tissues, and only a handful of studies apply SIMS on plant stems, roots, and/or seeds. Our project provides a brief description and review of previous work using SIMS on plant stems, roots, and/or seeds, along with an emphasis on the sample preparation in each study. Additionally, the use of Brachypodium distachyon (Brachypodium) as a model system for research on grasses has also ...


Impacts Of Nutrient Enrichment On Native And Non-Native Plants In Serpentine Soil, Amber R. Williams, Mary Devlin, N. Rajakaruna Aug 2018

Impacts Of Nutrient Enrichment On Native And Non-Native Plants In Serpentine Soil, Amber R. Williams, Mary Devlin, N. Rajakaruna

STAR (STEM Teacher and Researcher) Presentations

Serpentine soil, derived from serpentinite, California’s state rock, is characterized by its harsh nature - due to its low levels of essential nutrients and exceptionally high levels of toxic heavy metals.In California, serpentine soils are characterized by high levels of plant endemism and rarity. Plants occurring in serpentine soil exhibit extreme tolerance of harsh soil conditions, and are typically out-competed in ‘normal’ soils due to the cost associated with physiological specialization. Atmospheric nutrient deposition is contributing to a greater invasion of non-native grass species on serpentine soils, outcompeting the native species and threatening them with local extinction. Our greenhouse ...


Scale-Invariant Geometric Data Analysis (Sigda), Marina Girgis, Max Robinson Aug 2018

Scale-Invariant Geometric Data Analysis (Sigda), Marina Girgis, Max Robinson

STAR (STEM Teacher and Researcher) Presentations

The purpose of this research is to introduce a new data analysis method called Scale Invariant Geometric Data Analysis (SIGDA). SIGDA has been shown to be more informative than more common data analysis methods, such as Principal Component Analysis (PCA). SIGDA is used to visualize complex data sets in a way that accurately preserves data patterns and behavior. SIGDA is designed to preserve relative ratios in a numerical matrix, and the number of entries has to be more than the total number of rows and columns. Our research involved providing a simple explanation of SIGDA's mathematical process—simple enough ...


Implementation Of Planetary Protection Requirements On Robotic Missions, Lauren M. Tran Jan 2018

Implementation Of Planetary Protection Requirements On Robotic Missions, Lauren M. Tran

STAR (STEM Teacher and Researcher) Presentations

NASA has developed mandatory planetary protection requirements for all outbound and inbound space missions beyond Earth orbit. Planetary Protection policies are set by COSPAR (Committee of Space Research) under the international provisions of the United Nation’s OST (Outer Space Treaty). It aims to promote responsible scientific exploration of the solar system, as well as support the study of chemical evolution and origins of life that may be present. All robotic missions must be categorized depending on their planetary destination and the mission type (flyby, orbiter, or lander). Round trip missions are all classified as Category V missions (restricted or ...


Understanding Soil Moisture Levels On Soledad Ridge, Santa Rosa Island, California During The Summer Months, Dulce M. Lopez, Stephen Bednar, Kathryn Mceachern Jan 2018

Understanding Soil Moisture Levels On Soledad Ridge, Santa Rosa Island, California During The Summer Months, Dulce M. Lopez, Stephen Bednar, Kathryn Mceachern

STAR (STEM Teacher and Researcher) Presentations

Santa Rosa Island located off the coast of Santa Barbara County was grazed by non-native ungulates leaving the island stripped of vegetation topsoil layer. With the removal of ungulates, the National Park Service began restoring the Cloud Forest on Soledad Ridge. Soledad Ridge is said to have once been covered by large stands of island oaks (Quercus tometella) and other endemic and native plants. The unique leaf and structural morphology of such vegetation collects water from wind derived fog which serves as the main source of water for this unique ecosystem. In an effort to jump-start ecosystem vegetation recovery, a ...


Spatial And Temporal Heterogeneity Of Microbial Life In Artificial Landscapes, Roopkamal Kaur, Aditi Sengupta, Peter A. Troch Sep 2017

Spatial And Temporal Heterogeneity Of Microbial Life In Artificial Landscapes, Roopkamal Kaur, Aditi Sengupta, Peter A. Troch

STAR (STEM Teacher and Researcher) Presentations

The Landscape Evolution Observatory (LEO) project at Biosphere 2 consists of three replicated artificial landscapes which are sealed within a climate-controlled glass house. LEO is composed of basaltic soil material with low organic matter, nutrients, and microbes. The landscapes are built to resemble zero-order basins and enables researchers to observe hydrological, biological, and geochemical evolution of landscapes in a controlled environment. This study is focused on capturing microbial community dynamics in LEO soil, pre- and post-controlled rainfall episodes. Soil samples were collected from six different positions and at five depths in each of the three slopes followed by DNA extraction ...


Ecological And Organic Life Safety Concerns Of Hfo-1234yf, Alberni V. Ruiz Aug 2017

Ecological And Organic Life Safety Concerns Of Hfo-1234yf, Alberni V. Ruiz

STAR (STEM Teacher and Researcher) Presentations

While at NOAA my research was directed by the inquiry of whether or not HFO-1234yf, a new compound being introduced into coolant system and replacing greenhouse gases HFC, is harmful to organic life. Using the computer program Matlab I was able to develop figures that represented the concentration of HFO-1234yf (HFO) in 12 different tower locations throughout the country. Comparing and contrasting concentrations of this HFO compound at each site led me to the question the possible harmful side effects this compound could bring to organic life due to the fact that concentration levels are increasing, with one factor being ...


Designing An Authentic Behavioral Research Experience In The Classroom Using Siamese Fighting Fish, Betta Splendens, Gianne Souza, Ronald M. Coleman Aug 2017

Designing An Authentic Behavioral Research Experience In The Classroom Using Siamese Fighting Fish, Betta Splendens, Gianne Souza, Ronald M. Coleman

STAR (STEM Teacher and Researcher) Presentations

Recently there have been major shifts in biology education towards emphasizing the teaching of the scientific process to more closely reflect actual scientific practices. Authentic research experiences require the development of many higher order cognitive skills. Creating an authentic research experience that appropriately scaffolds the development of these complex skills while engaging individual student motivation remains challenging in classroom settings. Some common challenges include limited time available for working with large numbers of students, cramped working areas, and limited funding and materials resources. Using the Siamese Fighting Fish, Betta splendens, we have created an economically viable authentic animal behavioral research ...


Effects Of Habitat Restoration On Soil Retention On Santa Rosa Island, Michael Perez, Kathryn Mceachern, Ken Niessen Jan 2017

Effects Of Habitat Restoration On Soil Retention On Santa Rosa Island, Michael Perez, Kathryn Mceachern, Ken Niessen

STAR (STEM Teacher and Researcher) Presentations

Ranching began on Santa Rosa Island in the 1840’s, consequently introducing nonnative megafauna that put novel selective grazing pressures on endemic plant species. Their movement patterns also altered substrate integrity as the land became denuded of any stabilizing vegetation. Dense groves of island oak (Q. tomentella) are known to aid in sediment deposition and retention. The groves also function to collect water during periods of intense fog common to the island. This experiment sought to determine whether sediment is being lost or deposited on a ridge in the middle of the island containing a grove of Q. tomentella. The ...


Weights And Balances: Integrating Models For Prevention And Response To Southern California Offshore Oil Spills, Carmen Watts Clayton, Amoret Bunn Oct 2016

Weights And Balances: Integrating Models For Prevention And Response To Southern California Offshore Oil Spills, Carmen Watts Clayton, Amoret Bunn

STAR (STEM Teacher and Researcher) Presentations

Licensing offshore oil and gas reserves in the United States waters are overseen by the U.S. Department of the Interior’s Bureau of Safety and Enforcement (BSEE). The licensing application includes planning for any worst-case oil spill scenario between BSEE and the applicant based on lessons learned from historic offshore spills such as the Deepwater Horizon (2010), Exxon Valdez (1989), and the Union Oil Platform Blowout (1969). The process for planning to respond to oil spills involves coordination with multiple agencies, trustees, and stakeholders to ensure that oil spill responses consider multiple factors, including ecologically sensitive species, commercial transportation ...


Soil Moisture On Soledad Ridge In Santa Rosa Island, Channel Islands National Park, Carrie Fong, Kathryn Mceachern, Ken Niessen Oct 2016

Soil Moisture On Soledad Ridge In Santa Rosa Island, Channel Islands National Park, Carrie Fong, Kathryn Mceachern, Ken Niessen

STAR (STEM Teacher and Researcher) Presentations

Santa Rosa Island is one of the Channel Islands off the coast of southern California. Before the island was heavily grazed, Santa Rosa Island is thought to have had large stands of island oak trees, Quercus tomentella, that provided a critical source of water for the ecosystem by creating a “cloud forest”. Wind-borne fog collects on the leaves, branches, and twigs of the island oaks and other native shrubs. Once the water condenses it drips, falls, and soaks into the soil. Introducing cattle and especially sheep to the island has damaged the ecosystem and nearly decimated Santa Rosa Island of ...


Testing Predictions Used To Build An Agrivoltaics Installation On A Small-Scale Educational Model, Katie Kinney, Rebecca Minor, Greg Barron-Gafford Oct 2016

Testing Predictions Used To Build An Agrivoltaics Installation On A Small-Scale Educational Model, Katie Kinney, Rebecca Minor, Greg Barron-Gafford

STAR (STEM Teacher and Researcher) Presentations

Models are valuable tools for explaining and testing systems. Small-scale models can be especially useful for educational purposes. For models to be useful, they have to accurately depict the larger system that they are describing. A novel man-made system, known as an agrivoltaic structure, is being constructed at Biosphere 2 near Oracle, Arizona. The word agrivoltaic is a combination of agriculture and photovoltaics, or solar farming. My research involved creating a small-scale version of this system for educational purposes. The model of this system tested two predictions: that plants will grow better in the shade of a panel and that ...


To Fish Or Not To Fish? What Effect Do California’S Marine Protected Areas Have On Up-And-Coming Kellet’S Whelk Fishery?, Jennifer Greene Oct 2016

To Fish Or Not To Fish? What Effect Do California’S Marine Protected Areas Have On Up-And-Coming Kellet’S Whelk Fishery?, Jennifer Greene

STAR (STEM Teacher and Researcher) Presentations

Kellet’s whelk, Kelletia kelletii, were observed at sample sites throughout their range from Baja California, Mexico, to Monterey, CA to determine patterns of population density. Sample sites in each region were either located within California marine protected areas where take of the Kellet’s whelk in prohibited, or in non-protected areas where the whelks can be fished both commercially and recreationally. Kellet’s whelk population density was compared between all MPA and non-MPA sample sites. These mean densities were also found for sites in Santa Barbara and San Diego near active fishing ports and compared to data from the ...


Studying The Effects Of Serpentine Soil On Adapted And Non-Adapted Species Using Arduino Technology, Kiana Saniee, Edward Himelblau, Brian Paavo Oct 2016

Studying The Effects Of Serpentine Soil On Adapted And Non-Adapted Species Using Arduino Technology, Kiana Saniee, Edward Himelblau, Brian Paavo

STAR (STEM Teacher and Researcher) Presentations

Abstract: Serpentine soils are formed from ultramafic rocks and are represent an extreme environment for plants. Serpentine soils are unique in that they carry high concentrations of heavy metals, are nutrient deficient, particularly in calcium, and have poor water retention capabilities. Although these soils constitute harsh conditions for plant growth, there are a number of species that are adapted and even endemic to serpentine soil. Water retention by commercial potting mix was compared with serpentine soil. Also, serpentine adapted and non-adapted species were grown in both soil treatments and physiological data were collected. We used the Arduino electronic platform to ...


Impacts Of Fog Drip On Survivorship And Growth Of Native Herb And Shrub Seedlings On Santa Rosa Island, Julianne Bradbury, Ken Niessen, Kathryn Mceachern Sep 2016

Impacts Of Fog Drip On Survivorship And Growth Of Native Herb And Shrub Seedlings On Santa Rosa Island, Julianne Bradbury, Ken Niessen, Kathryn Mceachern

STAR (STEM Teacher and Researcher) Presentations

Overgrazing on Santa Rosa Island led to loss of topsoil in ridgeline groves of endemic island oaks (Quercus tomentella). Restoration specialists attempting to mitigate the impacts of wind and water erosion must determine efficient methods of reestablishing native vegetation. Planting pillows, burlap sacks filled with planting mix and attached to the bedrock substrate, may nurture seedlings long enough for their roots to penetrate the underlying sandstone. Since the island’s ridgeline habitat is often inaccessible during the rainy season, restoration efforts are largely confined to the dry summer months, during which condensed fog is an important source of moisture for ...


The Evaluation Of The Response Of American Eels To Rapid Decompression, Christina Macmillan, Alison Colotelo, John Stephenson, Briana Rhode, Trevor Macduff Sep 2016

The Evaluation Of The Response Of American Eels To Rapid Decompression, Christina Macmillan, Alison Colotelo, John Stephenson, Briana Rhode, Trevor Macduff

STAR (STEM Teacher and Researcher) Presentations

Hydropower dams are used throughout the world to generate electricity and dams can negatively affect fish, as they can hinder or block migration or be a source of injury and mortality during passage. When moving downstream, fish can pass through the turbines instead of other routes (e.g. spillway and juvenile bypass system)where there is a sudden decrease in pressure that can cause barotraumas, injuries from the changes in barometric pressure, (e.g., hemorrhaging, embolism, ruptured organs) due to internal gases expanding. To determine the response of American eels, Anguilla rostrate, to rapid decompression, testing was conducted in the ...


Abundance Of Crabs And Predation On Hemigrapsis Oregonensis In Tiscornia Marsh, San Francisco Bay, Alynn Hoffman, Julie Anne Gonzalez, Michelle Marraffini, Andrew L. Chang Sep 2016

Abundance Of Crabs And Predation On Hemigrapsis Oregonensis In Tiscornia Marsh, San Francisco Bay, Alynn Hoffman, Julie Anne Gonzalez, Michelle Marraffini, Andrew L. Chang

STAR (STEM Teacher and Researcher) Presentations

With a carapace width ranging up to 35 mm for adult males and 29 mm for adult females, Hemigrapsis oregonensis is a native shore crab typically found in the rocky intertidal zone along the Northern Pacific coast. Although this habitat provides protection against desiccation as well as changes in temperature, it may also expose H. oregonensis to predators who prefer the same habitat. The goal of this research was to investigate both the predation on H. oregonensis and the abundance of various crabs of Tiscornia Marsh in San Francisco Bay. We hypothesize that the largest predation will occur in the ...


Identification Of Microorganisms Isolated From Mars-Bound Spacecraft Using Maldi-Tof, Melanie K. Phillips Sep 2016

Identification Of Microorganisms Isolated From Mars-Bound Spacecraft Using Maldi-Tof, Melanie K. Phillips

STAR (STEM Teacher and Researcher) Presentations

The primary goal of the Biotechnology and Planetary Protection Group (BPPG) at the Jet Propulsion Laboratory (JPL) is to prevent microbial contamination between Earth and other planetary bodies. This helps preserve the ability to study other worlds as they exist in their natural states and protects our biosphere from extraterrestrial life. The process for identifying microbes located on space-bound hardware in JPL can be more efficient and precise by using the technique called matrix-assisted laser desorption and ionization time of flight (MALDI-TOF). Once this identification technique is fully implemented, the process time will be reduced from two weeks to one ...


Gc Verification Of The Spacecraft Atmosphere Monitor, Jessica S. Castro, Richard D. Kidd, Jeffrey D. Hein Sep 2016

Gc Verification Of The Spacecraft Atmosphere Monitor, Jessica S. Castro, Richard D. Kidd, Jeffrey D. Hein

STAR (STEM Teacher and Researcher) Presentations

International Space Station crew members face the unique challenge of maintaining air quality due to the volatile organic compounds (VOCs) that have the potential to accumulate at unsafe levels. The Spacecraft Atmosphere Monitor (SAM) is a miniature gas chromatograph/mass spectrometer (GCMS) designed to measure major constituents (such as N2, O2 and CO2) and trace VOCs within the cabin of the spacecraft. The gas chromatograph is responsible for separating the sample into its components in order to be characterized. The oven of the gas chromatograph must reach a temperature of 150°C in order to heat constituents ...


Optimizing Gdna Purification And Qpcr Techniques For Specific Detection And Enumeration Of Probiotic Bacteria, Katelynn C. Lee, Jennifer Vanderkelen, Christopher Kitts Sep 2016

Optimizing Gdna Purification And Qpcr Techniques For Specific Detection And Enumeration Of Probiotic Bacteria, Katelynn C. Lee, Jennifer Vanderkelen, Christopher Kitts

STAR (STEM Teacher and Researcher) Presentations

Probiotics are live microorganisms, like bacteria and yeast, which are thought to provide health benefits when ingested. Large manufacturers produce blends of probiotics for supplementing the diets of agriculturally important animals. Commercial probiotic products are labeled with the number of cells present at the time of manufacture. Our assignment was to develop an assay which can be used to quantify the number of specific lactic acid bacteria present in certain probiotic products, thus verifying the number reported on the product labels. This quantification process involves isolating genomic DNA (gDNA) from the given samples and then running the DNA through a ...


Optimization Of A Genomic Editing System Using Crispr/Cas9-Induced Site-Specific Gene Integration, Jillian L. Mccool Ms., Nick Hum, Gabriela G. Loots Aug 2016

Optimization Of A Genomic Editing System Using Crispr/Cas9-Induced Site-Specific Gene Integration, Jillian L. Mccool Ms., Nick Hum, Gabriela G. Loots

STAR (STEM Teacher and Researcher) Presentations

The CRISPR-Cas system is an adaptive immune system found in bacteria which helps protect against the invasion of other microorganisms. This system induces double stranded breaks at precise genomic loci (1) in which repairs are initiated and insertions of a target are completed in the process. This mechanism can be used in eukaryotic cells in combination with sgRNAs (1) as a tool for genome editing. By using this CRISPR-Cas system, in addition to the “safe harbor locus,” ROSAβ26, the incorporation of a target gene into a site that is not susceptible to gene silencing effects can be achieved through few ...


Investigating The Infection And Persistence Of Sindbis Virus In Host Neurons, Gavin Schroter, Sally Hall, Monica Borucki Aug 2016

Investigating The Infection And Persistence Of Sindbis Virus In Host Neurons, Gavin Schroter, Sally Hall, Monica Borucki

STAR (STEM Teacher and Researcher) Presentations

Sindbis virus, an Alphavirus in the Togaviridae family, is an enveloped, single-stranded positive-sense RNA virus. Found mostly in parts of Africa, Australia, Egypt, Philippines, and Northern Europe – it is known to cause Ockelbo or Pogosta disease [1]. This disease is characterized by the sudden onset of fever, headache, and arthralgia; followed by arthritis, rash, fatigue, and muscle pain. The symptoms are gone within 14 days, though cases have shown joint pain to last from 12 months to 2 and a half years [4]. Common to several other viruses, Sindbis is transmitted from birds (its reservoir) to humans via an arthropod ...


Protein Crystallization Tray Protocol Development, Brooke Connell Aug 2016

Protein Crystallization Tray Protocol Development, Brooke Connell

STAR (STEM Teacher and Researcher) Presentations

In the field of protein crystallography the transfer of the protein crystals from the crystallization plate/tray, where the crystals are initially grown, to the site of analysis is a difficult and lengthy process. A new crystallization tray has been designed and 3D printed to eliminate this intermediate step which is called crystal fishing. The crystallization tray allows crystals to be grown directly on grids that are attached to the pins that are used for analysis of the crystal. The efficacy of protein crystallization using the aforementioned tray was tested in order for a protocol to be developed for potential ...


Effects Of Soil Erosion Barriers On Percent Cover And Sediment Size, Michael Perez Aug 2016

Effects Of Soil Erosion Barriers On Percent Cover And Sediment Size, Michael Perez

STAR (STEM Teacher and Researcher) Presentations

Ranching began on Santa Rosa Island in the 1840’s, introducing nonnative megafauna that put selective grazing pressures on endemic species. Dense groves of island oak (Q. tomentella) are aid in sediment deposition and retention. A current restoration effort, involved installing soil erosion barriers, known as wattles, to prevent sediment from being lost upslope and recruit plant growth whose root systems could further stabilize the slope. This experiment was designed to compare percent cover of vegetation growth in areas with and without soil erosion barriers. This was done using the line intercept method (n=42) on three meter transects, measuring ...


Citizen Science Sensor Development - Smap | Soil Moisture Active Passive, Hagop Hovhannesian Aug 2016

Citizen Science Sensor Development - Smap | Soil Moisture Active Passive, Hagop Hovhannesian

STAR (STEM Teacher and Researcher) Presentations

“Detailed monitoring of soil moisture provides a view of how our whole Earth system works.”

The Soil Moisture Active Passive (SMAP) satellite mission was launched in January 2015; its main purpose is to acquire global measurements of soil moisture. SMAP partnered with the GLOBE program (Global Learning and Observations to Benefit the Environment), which is an international program where students collect environmental variables in a scientifically methodical way. SMAP readings and maps have various uses in various fields, which include monitoring drought, predicting floods, assisting in crop productivity, and linking water, energy and carbon cycles. The goal of this project ...


Comparative Analysis Of In Situ Fibronectin Using Tof-Sims, Spi-Ms, And Dropdesi-Ms In A Microfluidic Reactor, Shannon Fasing, Xiao-Ying Yu, Juan Yao, Jiachao Yu Aug 2016

Comparative Analysis Of In Situ Fibronectin Using Tof-Sims, Spi-Ms, And Dropdesi-Ms In A Microfluidic Reactor, Shannon Fasing, Xiao-Ying Yu, Juan Yao, Jiachao Yu

STAR (STEM Teacher and Researcher) Presentations

Fibronectin is an important biomolecule due to its role in cell differentiation, growth, kinesis, and adhesion. Such biological responses are mediated through membrane recognition and signaling; where fibronectin is found. Studying the outer molecular surface of fibronectin allows deeper insight into the microbiological reactions that occur during these processes. In situ mass spectrometry analysis in aqueous solution accurately represents fibronectin’s chemical components, made possible by a vacuum compatible microfluidic reactor, SALVI (System for Analysis at the Liquid Vacuum Interface). SALVI was paired with the analytical tools: time-of-flight secondary ion mass spectrometer (ToF-SIMS), single photon ionization mass spectrometer (SPI-MS) and ...