We look forward to seeing you at this year’s School of Biological Sciences Holiday Party for music, food, and the return of the White Elephant Gift Exchange! The School of Biological Sciences will provide individually wrapped dinner plates and beverages. We invite you to bring a gift to exchange.

White Elephant Gift Exchange
Each person who would like to participate should bring a wrapped, unmarked gift and place it in the designated area. Gifts should be appropriate for the work place and/or family friendly. The gift exchange will take place toward the end of the party.

Masks are strongly encouraged outside of eating and drinking. RSVP is closed for this event.

Event Details

By Frida Carrera

 

As one of the nation’s leading research institutions, Georgia Tech has always emphasized the pursuit of progress and service in its research endeavors. With such a strong focus on research, it is only right that many students at Tech have seized their opportunities to make an impact on the real world and solve complex problems. Taking initiative, asking the right questions, and being passionate about making a positive impact are innate characteristics that make a researcher, and Georgia Tech has in no way come short of giving rise to many exemplary researchers. The following undergraduate student researchers are serving as catalysts for innovation and development in their respective fields and are representative of Georgia Tech’s mission in developing leadership and improving the human condition. 

Prahathishree (Premi) Mohanavelu is a 5th-year Computer Science major with a Pre-Health concentration. She conducts research with Dr. Cassie Mitchell in Biomedical Engineering on informatics-based literature mapping to personalize therapy for Chronic Myeloid Leukemia. 

“I was really looking for a way to apply the concepts I was learning in my computer science classes to the field of healthcare, and I felt this position was the perfect fit for that.” 

One of her main reasons for conducting this research was her interest in medical innovation. Premi believes the future of medicine will rely on preventative care and says her research position has also helped her with oral presentation and communication skills. Premi also serves as president of the Undergraduate Research Ambassadors and utilizes her research role and experience to teach prospective research students the ins and outs of obtaining research knowledge.

Yiyang (Diana) Wang is a 4th-year Computer Science major conducting research with Dr. Jennifer Kim on contact tracing visualization tool design and implementation. Her research is applicable to easily contracted illnesses including COVID-19. Yiyang believes her research will help people understand the importance of contact tracing and how data collection, for contact tracing purposes, could be beneficial. Yiyang’s goal is to become a software engineer and wants to focus on improving technology for the benefit of the user. Yiyang thanks the Undergraduate Research Opportunities Program (UROP) for obtaining her position as it was a major resource for her in finding and landing her current research position. 

Milan Riddick is currently a 5th-year Biomedical Engineering major with a minor in Health, Medicine, and Society conducting research with Dr. Jennifer Singh in the area of History, Technology, and Society on the mistrust of the COVID-19 vaccine among black citizens of Georgia. Milan has been the primary lead in her own research and has combined her passions for medical sociology and research to do what she loves. From proposing, securing funding, recruiting, and interviewing, Milan had a vision from the start and hopes to understand and improve the trust disparity between black Georgia citizens and the COVID-19 vaccine. Milan hopes her current research will aid with the trust between people and medicine as well as securing her path to graduate school.

William York is a 4th-year Biomedical Engineering major with a concentration in Pre-Health. He is currently conducting research with Dr. Edward Botchwey on using biomaterials to immunomodulate muscular defects for tissue regeneration. He believes his research is important because it will aid in the initiative in potentially replacing stem cells with exosomes in stem cell research while retaining the same regenerative effects and creating fewer risks. William wasn’t sure about research when he first arrived at Tech, but after learning the opportunities and resources UROP had for undergraduate students, he quickly became involved. William is now currently in the Research Option program and is also an Undergraduate Research Ambassador providing guidance to students also interested in research. 

Hannah Shin is a 3rd-year Biology major with a concentration in Physiology and is conducting research with Dr. Colin Harrison on measuring the organization of biological knowledge around experimental design utilizing a card sorting task. Hannah’s research uses its results to identify the weak areas in biology programs and make the necessary revisions to instruct students more effectively. Hannah believes her research will also aid her in future endeavors. 

 “My career goal is medical school and I believe my research will advance both my academic and career goals because it exposes me to real-world applications of data analysis and allows me to dive into the differences in knowledge organization among people of different backgrounds.” 

 Hannah is also a participant in the Research Option program and is the executive vice president of the Undergraduate Research Ambassadors. She uses her research and personal experience to help students gain confidence in pursuing research they are passionate about. 

 

Read more about Undergraduate Research opportunities by going to http://urop.gatech.edu

Atlanta is often called the “city in a forest” because of its lush canopy of trees, uncommon for a major city. In the heart of that forest sits Georgia Tech’s 400-acre campus. And within campus lies a variety of wildlife that has made Georgia Tech its home.

“I don’t think most people are aware of wildlife on campus,” said Emily Weigel, senior academic professional in the School of Biological Sciences. “They might see a feral cat here or there, but they don’t really think about all the other animals that live on campus. Georgia Tech is the animals’ home base, and they probably don’t know anything other than they were born in this area. They don’t know they’re in the middle of a city.”

Included in the biodiversity surveys of the area are squirrels, possums, raccoons, rats, and birds. Several months ago a couple of coyotes were spotted, but they were just passing through campus. At least two foxes live in the glade, a densely forested area behind the president’s residence on the north side of campus.

Ben Seleb, a Ph.D. student in quantitative biosciences, is developing an open source camera for studying the foxes and other wildlife. He and his colleagues at Tech4Wildife, a course and campus organization devoted to the conservation of wildlife, have been monitoring the foxes.

“We had some suspicions that foxes were in the glade,” Seleb said. “It’s a very secluded area with dense vegetation, so it’s a great spot for campus wildlife to hide during the day and then come out at night.”

To confirm their suspicions, they set up cameras inside the glade and left them for a couple of weeks. When they reviewed the images, they had captured two foxes on camera at the same time.

“We know there could be more, but we’ve only seen two foxes at one time. They’re difficult to tell apart, but we’re working on identifying individuals,” he said. “There are a number of other animals on campus, and the glade is where many of them live. We have seen raccoons, possums, and a couple of feral cats that travel in and out of the glade.”

The glade connects to Tech’s new EcoCommons, a lush 8-acre woodland area near the center of campus, providing a pathway for wildlife to travel into campus at night, while still giving them the cover of vegetation. Georgia Tech generally offers a handful of classes related to wildlife or ecology, but the amount of wildlife on campus is creating new research opportunities.

“I’m happy to see programs giving students opportunities that they may not have been aware of,” Seleb said.

Birds, Birds, Birds

The lush vegetation on campus provides birds with a source of nutrition as well as a good place to build nests. Horticulturalist Steve Place, who can usually be found working near The Kendeda Building for Innovative Sustainable Design, helps to create a native habitat to support the birds.

“We’re reintroducing native plants to recreate the habitat for the native birds,” Place said. “When you move away from the native landscape it encourages ‘generalist’ birds that are more tolerant of what they can eat. We want to encourage the reemergence of the rarer species of birds that are dependent on particular grasses and berries.”

The campus landscape team is removing ivy and other invasive non-native plants near The Kendeda Building. They’re building a sustainable and regenerative ecosystem that can support itself and the endemic species in the area. Place said that people who visit the area regularly will begin to notice the variety of birds.

“If you’re observant and patient enough you’ll see different behaviors, hear different songs, and observe mating rituals,” he said. “There is a lot going on with the birds. It’s just a matter of being quiet and paying attention.”

The Kendeda Building and the adjacent EcoCommons are part of a wildlife sanctuary certified by the Georgia Audubon Society, making Georgia Tech the first university campus building in Georgia to receive the designation.

Tips for Co-existing With Campus Wildlife

Emily Weigel, senior academic professional in the School of Biological Sciences, provided the following tips.

  • In general if you see wildlife on campus keep your distance and just observe. Take in the sights and sounds.
  • If possible, record the encounter and post it to iNaturalist, noting when and where the animal was spotted, for Tech’s students and team of scientists studying wildlife.
  • Many animals will purposefully avoid you, but if an animal seems to be unafraid or approaches you, do not interact. Keep yourself and any children or pets away.  
  • Do not feed wildlife. This can cause some animals to stray too far into high traffic areas (in search of food) and potentially get hit by cars. In some cases feeding the animals robs the adults of the ability to teach their young to forage effectively.
  • If you find what appears to be “abandoned” young, do not handle them; just monitor them until their parent returns. Most of the time the parent has not really abandoned them, but if you handle the young they may then do so.
  • Wildlife rehabbers are legally able to perform any recovery and recouping necessary. Should you find a dead bird on campus, you can help get the information logged for Georgia Audubon’s windows strike data collection by emailing Emily.Weigel@biosci.gatech.edu. If you act quickly, the bird can be recovered for educational purposes through Audubon.

For his latest research on motor skills, visual learning, and their effects on human physiology, School of Biological Sciences associate professor Lewis Wheaton and his team went all the way back to the Paleolithic Era to study a very retro skill: stone toolmaking.

“One of the cool things about this particular study,” Wheaton says, “is this opportunity to look at a completely novel motor task, something most people have no idea how to do, and that’s making a stone tool.”

The new research, published today in Communications Biology, attempts to fill in the gaps when it comes to the science of how we learn complex motor skills — and what may be required to relearn them. 

Wheaton says there are studies researching the behavioral changes that are involved with learning complex skills. But research is still thin on how people adapt their visuomotor skills (how vision and movements combine) to carry out a complex task. Wheaton’s current study sought to quantify and evaluate the changes and relationship in action perception processes – how we understand actions, then select, organize, and interpret what needs to be done for a particular task. 

“The overall motivation was to determine if we could see any kind of emerging relationship between the perceptual system and the motor system, as somebody is really trying to learn to do this skill,” Wheaton says. Those are important processes to understand, he adds, not just for how people attain complex motor skills learning, but what would be needed for motor relearning, as in a rehabilitation setting.

Wheaton conducted the research with graduate students Kristel Yu Tiamco Bayani and Nikhilesh Natraj, plus three researchers from Emory University’s Department of Anthropology.

Tracking the eyes to learn about learning 

The test subjects in the study watched videos of paleolithic stone toolmaking for more than 90 hours of training. The subjects’ visual gaze patterns and motor performance were checked at three different training time points: the first time they watched the video, at 50 hours of training, and at approximately 90 hours. Everybody was able to make a stone tool (with varying degrees of success) at 90 hours, but some picked up the skills at 50 hours.

Wheaton says there was a lot of information to pay attention to in the videos. “There’s a lot of physics in (making stone tools). You’re hitting a rock which is made up of all different kinds of material. There could be a fissure or fault lines, and if you hit it the wrong way it could crumble. When you’re doing it at first, you don’t know that.”

As the video training went on, the participants started to pick up cues about how to strike the rock, along with other aspects of toolmaking. “At first you’re watching from curiosity, then you’re watching with intent.”

That was the exciting part for Wheaton and his team: Being able to see the different phases of learning during the training — which they actually could see by monitoring gaze tracking, or where the subjects’ eyes landed on the video screen as they watched (see photo.)

“Part of the study was to understand the variability where they are visually focused as they get better at the task,” he says.

That’s how Wheaton’s team found there are certain parts of the skills learning that connect better to gaze, but others that connect better to the physical act of making a stone tool. “As you’re going through time, your motor abilities are changing, and at some point that allows you to watch somebody else perform the same task differently, suggesting you’re able to follow the action better, and pull more information from the video in a much clearer way.”

The study not only found a connection between gaze and motor skills learning, but that the connection evolved as the learning went on. The next step in this research, Wheaton says, should include brain imaging “heat maps” to determine where learning takes place with this process. 

That could also help Wheaton’s team apply these lessons for rehabilitation purposes.

“That’s the link between that and some of the other work we’ve done in a rehab context,” he says. “If you’re watching somebody perform a task, if you’re undergoing rehab, there are different ways you’re watching the task. You’re not always watching it the same way. Maybe it depends on how good you are, or how you’re impaired, but all those variables play a role into what you’re visually pulling out” of the rehab training.

 

DOI: doi.org/10.1038/s42003-021-02768-w

Tara Holdampf is the new College of Sciences satellite counselor, and will provide consultation services and support for students from an office at the Molecular Science and Engineering Building (MoSE). 

“I'm excited to join the incredibly welcoming and talented group at the College of Sciences at Georgia Tech as a satellite counselor,” Holdampf says, “to continue the process of breaking down barriers between students and mental health services.”

Satellite counselor locations improve accessibility for students by providing counseling in places where students spend most of their time. Placing a counselor in an academic department helps to destigmatize mental health and may serve those who might hesitate to go to the Georgia Tech Counseling Center. A primary goal is to reach students who might not have otherwise sought out services. 

Holdampf will provide a wide variety of services such as individual counseling, group counseling, psycho-educational workshops, and walk-in hours for brief consultations (available to students, or faculty/staff who need to consult about a student). 

Holdampf issues a reminder that “as stress levels increase, and the fall semester continues, please know that GT CARE and GTCC are here to offer confidential support and services to students in need of mental healthcare.”

Currently enrolled interested students can reach out to GT CARE at (404) 894-3498 to schedule an initial assessment, and to be connected to health and wellness services. Current clients can continue to reach their GTCC counselor via email.

Holdampf will be offering consultation hours during which students, faculty, and staff can meet to learn more about mental health resources on campus, and/or to discuss a specific non-emergency student concern. These consults typically last 15 minutes. Those interested can email Holdampf at tara.holdampf@studentlife.gatech.edu to request a meeting. Holdampf will respond with a date/time and link/location for the consultation.

Find Tara's consultation hours and more resources here.

 

Students in need of mental health support after hours can call the GTCC main number at 404-894-2575, and follow the prompts to speak with an after-hours counselor.  Please visit the GTCC website for upcoming workshops, Let’s Talk sessions, and online offerings.

 

Holdampf, who has practiced in a higher education setting for seven years, has an M.S. in Clinical Mental Health Counseling and is a Licensed Professional Counselor in Georgia. Holdampf is also a Certified Clinical Trauma Professional and serves on the council of the Georgia College Counseling Association.

Postdoctoral Fellow Positions in Quantitative Viral Dynamics

Multiple postdoctoral scientist positions (2+ years) are available in Prof. Joshua Weitz’s group in the School of Biological Sciences at the Georgia Institute of Technology in Atlanta, GA with potential cross-appointment at IBENS in Paris, France where Prof. Weitz holds the Blaise Pascal Chair. The postdoc positions are in two, complementary areas: (i) phage therapy & (ii) marine virus ecology.

Join ETHICx for an interdisciplinary panel of faculty, in biological sciences, civil and environmental engineering, business, and public policy, as they discuss teaching ethics and preparing students for ethical challenges in their future careers.

Moderator:

Michael Goodisman, Associate Professor, School of Biological Sciences, College of Sciences

Panelists:

Adjo Amekudzi-Kennedy, Associate Chair for Global Engineering Leadership and Entrepreneurship and Professor, School of Civil and Environmental Engineering, College of Engineering

Karie Davis-Nozemack, Associate Professor, Scheller College of Business

Bob Kirkman, Associate Professor and Director of Graduate Studies, School of Public Policy, Ivan Allen College of Liberal Arts

Two attendees will receive basketball tickets for Georgia Tech vs Wisconsin on Dec. 1! We invite all those interested both within and outside of our Georgia Tech community to attend this event. 

Event Details

The cycle of rising temperatures leads to increases in precipitation as well as droughts.  But what impact will these weather extremes, especially heavier precipitation, have on the earth’s most effective water cleansers – wetland sediments?  

That question is driving a new $1 million, three-year grant awarded to a Georgia Institute of Technology interdisciplinary research team of geochemistry, biology and applied mechanics experts.

The award is part of the Department of Energy’s $7.7 million funding of 11 studies to improve the understanding of Earth system predictability and the Department’s Energy Exascale Earth System Model, a state-of the-science climate model. The researchers intend to develop a new scalable model that can analyze and ultimately predict where and when sediment disruptions are most likely to occur. 

Wetlands – Where Water and Land Meet

Found at the boundary between land and water, wetlands function as natural sponges that trap, cleanse, and slowly release surface water – they also serve as a natural climate change buffer, since they act as carbon “sinks,” storing vast amounts of carbon and methane in the ground. Swamps, marshes, and bogs are all examples of wetlands. What isn’t known is if wetlands that become damaged or degraded from excess water will still absorb carbon at the same level.  

By better understanding how wetlands work, Georgia Tech hopes to shed light on how wetlands will function with more frequent and more intense rainstorms.   

“A lot of work has been done in polar regions where there has been melting because of global warming, which has been shown to release a lot of methane. That’s the main motivation behind the work we’re going to do,” said the project’s principal investigator, Martial Taillefert, a geochemist and professor in the School of Earth and Atmospheric Sciences

As water levels rise, below ground oxygen is consumed very quickly, he explained. Then microbial processes take over, leading to methane forming as well as carbon dioxide, that can escape to the atmosphere.

In this project Taillefert will characterize the physical and chemical processes taking place in a wetland, mainly using electrochemical sensors deployed at different locations in the wetland. Taillefert will be able to follow the chemical response to microbial processes and study how perturbations of the water cycle affect the release of greenhouse gases. This data will then be used to fine tune the models that will predict greenhouse gas emissions.

Micro to Macro Scale
Initial studies will involve samples on the scale of a few grains of soil, but the researchers hope to eventually run simulations on the scale of a riverbed or watershed (where surface water drains into a common stream channel or other body of water).

“The goal is twofold – first, to satisfy our scientific curiosity and understand how those microbial processes can actually change the level of oxygen and trigger greenhouse gas emissions, and second, to develop a model that can predict what processes will be in the next cycle to better prepare and perhaps reduce carbon emissions in some cases,” said project collaborator Chloé Arson, associate professor of Geosystems Engineering in the School of Civil and Environmental Engineering

While Taillefert focuses on the chemistry component and Arson on the mathematical modeling, collaborator Thomas DiChristina serves as the microbe expert.

“My lab looks at what kind of hidden microbial processes are going on that we can't detect with the sensors because the methane is getting recycled so fast in the ground,” said DiChristina, professor in the School of Biological Sciences

DiChristina will be looking at multiple gene expressions without having to grow the bacteria in a laboratory. 

“Genomics allows you to deduce expression of metabolic potential. For example, which gene is producing methane, and which gene is inhibiting methane production,” he said.

Since methane won’t release into the atmosphere unless a certain condition occurs, the model will enable researchers to predict under what conditions methane would pour out of the sediments versus being retained and recycled, DiChristina explained.

The calculations that predict how much methane and carbon dioxide go into the atmosphere depend on an accurate description of what's happening in the subsurface -- in the sediment and in groundwater, Taillefert added. 

“We cannot yet quantify that really well. We think using our approach will enable us to get more data and a better understanding of how the process works and translate that knowledge into the models,” he said.

Taillefert and DiChristina have been working on improving Georgia Tech’s models for predicting these processes for over three decades.  With this latest award, they hope to better understand and model the processes of oxidation and reduction that change the microstructure of sediments during cycles of flood.

New Research Thrust – AI and Machine Learning  

Arson is most interested in predicting the changes in the size, shape, and arrangement of the grains of soil to understand how the porous space between the grains is affected by bio-chemical reactions. 

“Understanding the evolution of the porous space will help predict transport properties within the sediments, and the expected emissions of greenhouse gases,” said Arson. 

An expert in applied mechanics, she will use AI to build a model that can single out dominant reactions within the soil microstructure and disregard those that have minimal impact. Such insight will help simplify the model and allow it to more quickly correlate certain criteria that leads to spikes in greenhouse gases. 

“If you have a predictive model that actually attempts to explain the processes, as well as predicting them, then you have a more versatile approach that can be transferred to many other sites or environments,” she said. “I also could envision using this model and the machine learning algorithm to map locations where you expect higher emissions, and identify sites as risky, moderately risky or safe.”

Georgia Tech is partnering with two Department of Energy (DOE) national laboratories: Savannah River National Laboratory (SRNL) in Aiken, SC, and Argonne National Laboratory in Chicago, IL.

“Georgia Tech has a unique capability here that we don't have, and that capability is this combination of using state-of-the-art genomics capabilities, along with state-of-the-art electrochemistry, two attributes that Georgia Tech is internationally known for,” said Daniel Kaplan, senior research fellow with SRNL, which will serve as the study site.

Kaplan noted that Georgia Tech’s research fits perfectly with the DOE’s goal to better understand how wetlands function, enabling scientists to better understand their role in controlling water quality.

“Wetlands do a great job of cleaning out all the impurities and getting rid of a lot of the contaminants to clean the water up as it moves through a watershed,” said Kaplan. 

Atomic-scale Analysis  

Argonne National Laboratory plans to take Georgia Tech’s sediment samples and examine them at the atomic scale of individual atoms and electrons using the Advanced Photon Source (APS), a football-field-sized synchrotron that produces x-rays 10 billion times clearer than what is produced at a doctor’s office.

“The fundamental reactions that are controlling the quality of the water happen at the microorganism or nano scale,” said Kenneth Kemner, senior physicist and group leader of the Molecular Environmental Science Group at the Argonne National Lab. “By bringing all the different ways of looking at wetlands together, we'll actually have a much deeper understanding of how they function.”

From one of several x-ray ports operated 24x7, the APS can capture images of single microorganisms about 100 times smaller than the diameter of the human hair. In fact, when the APS first came online, it successfully analyzed hair strands of Ludwig van Beethoven, with the analysis deducing that the great German composer suffered from lead poisoning.

Kemner acknowledged that Georgia Tech brings unique capabilities to the wetlands research effort. He explained that answering the hard questions such as those posed by climate change will require this transdisciplinary and integrated problem-solving approach. 

Additional unfunded collaborators for this study include Christa Pennacchio, PMO Lead with the Joint Genome Institute (JGI) at the Lawrence Berkeley National Laboratory (JGI), and Stephen Callister, scientist with the Environmental Molecular Sciences Laboratory (EMSL), a U.S. DOE national scientific user facility managed by Pacific Northwest National Laboratory.   

Join us for this Molecular BioMedical Research Group Seminar. This week's talk is presented by Claudia Alvarez Carreno from the Williams Lab in the School of Chemistry and Biochemistry.

This seminar series is sponsored by Fisher Scientific and ThermoFisher Scientific.

Event Details

Gary Borisy, Ph.D.
Senior Investigator
Forsyth Institute

BlueJeans Seminar

ABSTRACT
The concept that different sites within the mouth support distinctive microbiotas was introduced almost 50 years ago. Subsequently, high-throughput profiling of microbes using culture-independent, DNA sequence methods showed that sites within the mouth could be distinguished by the composition of their resident microbiota. We suggest a stronger conclusion is warranted which we term the site-specialist hypothesis: that each microbe in the mouth is specialized for one habitat or a cluster of related habitats, so that the microbiota at one oral site are different from the microbiota at other oral sites not only in overall composition and proportions of common taxa but also in specific membership.  

We evaluate the site-specialist hypothesis by a combination of imaging and genomics approaches. Our imaging approach employs multiplexed fluorescence in situ hybridization to localize individual taxa at the micron scale.  Our genomics approach employs the construction of multispecies pangenomes and read recruitment from metagenomic samples collected from individual oral sites to evaluate the presence of individual strains at different sites within the mouth.  

Host: Juan P Barraza, Ph.D. student, Whiteley Lab

Event Details

Pages

Subscribe to School of Biological Sciences | Georgia Institute of Technology | Atlanta, GA | Georgia Institute of Technology | Atlanta, GA RSS