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Archer’s annual STEM Symposium is an opportunity for Los Angeles high school students who have completed independent or small group projects in STEM to present their findings. Students are invited to present their research in the fields of molecular biology, chemistry, physics, and engineering.

The Archer RISE Award honors exceptional young women for their innovative scientific research or engineering design projects that further existing knowledge or develop solutions to pressing scientific challenges. Finalists for the RISE Award are noted in throughout the online program and will be awarded at lunch on May 21.

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Breakout Session A [clear filter]
Saturday, May 21
 

11:15am

A Rapid Urinary Detector for Lyme Disease

This research project was aimed to create a low-cost and rapid Lyme disease detector that does not require the capabilities of a lab and, therefore, can be used at home. The process was guided by the question, can a novel, qualitative lateral flow assay detect sparse Lyme Disease antigens in urine? The lateral flow assay was designed with the goal of taking a maximum time of 30 minutes to obtain results once the detector is dipped in urine, similar to a pregnancy test. It was crucial to design a biosensor (a detective that can test extremely low concentrations) that detects antigens and not antibodies for Lyme disease because the antibodies develop well after the antigens (OspA, OspB, OspC) have infiltrated the immune system, making early diagnosis impossible. The antigens are outer-surface proteins that are shed by the bacteria in the body before the adverse effects take place. A lateral flow assay detector that took advantage of the avidin-biotin interaction and heat shock was developed in order to answer the question. In the trials to test the detector, purchased antigens were diluted in water to reach concentration levels that would be found in the urine at various stages of the disease. Currently, tests require lab technologies, use serum, and have a low accuracy rate, and there is not a single point-of-care detector that can be taken at home and give results in real time. Thus, the success of a cost-effective, accurate and rapid self-examination urinary detector for Lyme disease is unprecedented.


Exhibitors
MY

Marine Yamada

The Archer School for Girls
The Archer School for Girls; Grade 11


Saturday May 21, 2016 11:15am - 11:30am
Room 216

11:15am

Effect of Green Coffee Bean Extract on Obesity and Alzheimer[?]s Disease in C. elegans

Alzheimer[?]s (AD), a neurodegenerative disease suffered nationwide, is the most common form of dementia and worsens as it progresses. Extracellular beta-amyloid protein deposits constitute amyloid plaques in brains that are affected by Alzheimer[?]s. In addition, hyperphosphorylated tau proteins contribute to the plaque build-up through constructing neurofibrillary tangles. No clear treatment has been able to stop the disease or reverse its progression. However, connections between Alzheimer's and obesity have been established to further the search for a cure in AD. The study featured transgenic AD models of C. elegans as test subjects, either individually possessing mutated beta amyloids or hyperphosphorylated tau proteins. A transgenic model possessing the tub-1 gene will serve to measure obesity. Natural homeopathic antioxidants, specifically green coffee bean extract, have been shown to reduce inflammation and weight gain factors in obesity. Through a chemotaxis assay, green coffee bean extract tested the relation between the supplement's ability to suppress weight gain and improve memory conditions in transgenic models of C. elegans at different dosages. The effect of green coffee bean extract on protein buildup in the modified AD C. elegans models was then confirmed through a thioflavin-S staining assay.


Exhibitors
MA

Madelyn Arzt

The Archer School for Girls
The Archer School for Girls; Grade 12


Saturday May 21, 2016 11:15am - 11:30am
Room 125

11:15am

Effect of Magnetic Fields on the Arion distinctus in the Presence of Various Wavelengths of Light

The electromagnetic sensing ability found in many different vertebrates and invertebrates is mostly mediated through the opioid receptors, which receive and use opioids to control the feeling of pain. This sensing ability has been shown to be light dependent on the Cepea nemoralis (garden snail). Most of this research has been done using the Cepea nemoralis (garden snail) but very little been done using the Arion distinctus (land slug). This experiment continues the research done by Garrick et al (2015), using the Arion distinctus as the experimental subject and the Cepea nemoralis as a control group. The experiment was conducted by injecting the slugs and snails with an Enkephalinase Inhibitor, followed by a 15min exposure to a ±60μT magnetic field while the slugs are placed in two different wavelengths of light (red light- 730 nm and blue light - 455nm). This research tested the effect of the different wavelengths of light on the electromagnetic sensing abilities of the Arion distinctus (garden slug). This work is significant because it expands our current knowledge on how many animals sense and interact with their environment. In addition, it furthers our understanding of electromagnetic sensing in invertebrates and how it relates to light sensing. This research also demonstrates a new species with this electromagnetic sensing ability.


Exhibitors
SG

Sofia Garrick

The Archer School for Girls
The Archer School for Girls; Grade 12


Saturday May 21, 2016 11:15am - 11:30am
Room 124

11:15am

Testing electrochemical CO2 reduction on copper foil and graphene oxide film

Our group attempted the photocatalytic reduction of CO2 to ethanol using copper and graphene oxide. The motivation is the need for carbon-neutral, storable solar fuels. Graphene oxide was applied to a fluoride-doped tin oxide plate and dried on a hot plate. Reductive potential of the graphene oxide spots was tested by applying a current through the plate in a sodium hydroxide solution.


Exhibitors
KM

Katie Maruna

Alverno High School
Alverno High School; Grade 11
JS

Jenny Sun

Alverno High School
Alverno High School; Grade 11
MW

Melody Wu

Alverno High School
Alverno High School; Grade 11
HZ

Hanaa Zerroug

Alverno High School
Alverno High School; Grade 11


Saturday May 21, 2016 11:15am - 11:30am
Room 218

11:15am

The Absorbance of Energy by Atoms - Quantization and Photoelectric Effect
When an atom absorbs light or energy, electrons in their ground states get excited to higher states. According to the photoelectric effect, if we input enough energy, the electrons are able to eject from a metal surface. However if we do not meet that threshold energy, electrons will absorb quantized amounts of energy depending upon the electronic structure of the atom. In our experiment, we will create stock solutions of nickel and copper ions and use a visible spectrophotometer to determine the wavelength of visible light absorbed best by the substance in each solution. We will then quantify how the absorbance of the sample is related to the molar concentration of the ion in the solution, according to Beer's Law. Afterwards, we will build an apparatus to eject an electron from a metal surface with a certain amount of energy. We will learn how the ejection of an electron depends on the frequency and intensity of the light/energy source and also be able to measure Planck's constant.

Exhibitors
AB

April Bi

The Webb Schools
The Webb Schools; Grade 10
CD

Christina Dong

The Webb Schools
The Webb Schools; Grade 10


Saturday May 21, 2016 11:15am - 11:30am
Room 123

11:15am

Understanding The Fat Metabolism in Nematodes Through Fluorescence Imaging
Adding functional foods like fermented chickpeas into your diet might be all you need to effectively control Type 2 diabetes and obesity. While the healthcare costs involved with diabetes and obesity are high and the drugs used to control the disease can cause health risks, foods like fermented chickpeas that serve a therapeutic function would be a much more affordable and less harmful alternative for diabetes and obesity treatment. In my experiments, I am explore the change in fat content of C. elegans mutants that serve as a model system for Type 2 diabetes and obesity after exposed to fermented chickpea extract and BODIPY dye. The use of fluorescent dye added directly onto the growth media has allowed researchers the chance to visualize the fat content in C. elegans. My project uses fluorescence microscopy to assess the effect of fermented chickpeas extract on fat accumulation in nematodes.

Exhibitors
YZ

Yaqi Zhang

Flintridge Sacred Heart Academy
Flintridge Sacred Heart Academy; Grade 12


Saturday May 21, 2016 11:15am - 11:30am
Room 217

11:15am

Water Meter Attachment for Live Usage Data
The Crossroads School for Arts & Sciences InvenTeam received $4,500 from the Lemelson-MIT InvenTeams Grant Program to invent a product that would assist homeowners and water departments in measuring domestic water usage. As California enters the fifth year of one of its worst droughts in history, consumers and suppliers of water have been strongly encouraged to lower water usage. Recognizing that 25% of used water is residential, the team has designed and manufactured the H2.O Attachment for a household water meter that provides live water usage data through a mobile application. This invention increases consumers[?] awareness of water usage and detects leaks. Real time access to water usage data allows for an active approach to monitoring and lowering water consumption. Additionally, correspondents at a nearby water meter facility have expressed encouragement and excitement at the prospects of integrating the attachment with current procedures and products. The device relies on a microcontroller-linked camera which sends images to a server for analysis, generating numeric data from captured image files. These figures are then converted into easily read and digested displays via the mobile application, accessible on a smartphone, tablet, or other device. The app provides real time display of water usage with a graph relating volume of water to time and easily digestible graphics, such as bath tubs and pools. The app also offers a digital badge reward system to encourage lowered consumption.

Exhibitors
JB

Jacob Brooks

Crossroads School for Arts & Sciences
Crossroads School for Arts & Sciences; Grade 11
AF

Alex Frye

Crossroads School for Arts & Sciences
Crossroads School for Arts & Sciences; Grade 11
AG

Alex Groenendaal-Jones

Crossroads School for Arts & Sciences
Crossroads School for Arts & Sciences; Grade 11
AG

August Gross

Crossroads School for Arts & Sciences
Crossroads School for Arts & Sciences; Grade 11
EB

Emma Blue Kirby

Crossroads School for Arts & Sciences
Crossroads School for Arts & Sciences; Grade 11
AD

Andrea De Oliveria

Crossroads School for Arts & Sciences
Crossroads School for Arts & Sciences; Grade 11
AP

Alex Pantuk

Crossroads School for Arts & Sciences; Grade 11
SS

Sarah Saltzman

Crossroads School for Arts & Sciences
Crossroads School for Arts & Sciences; Grade 11
JS

Jackson Stogel

Crossroads School for Arts & Sciences
Crossroads School for Arts & Sciences; Grade 11


Saturday May 21, 2016 11:15am - 11:30am
IDEAlab