Amelia Weiss

While there have been relatively many studies of cave ecology in temperate regions, tropical cave ecology is vastly understudied. The purpose of my research is to identify some of the non-living environmental features that influence species distributions through Cueva Nibida, a large cave on an island off Panamas Caribbean coast. It is of growing importance that this ecosystem be understood so that conservation measures can be enacted to mitigate human impact brought upon by increasing tourism to the region. To accomplish this, I will map invertebrate distributions and abundances through […]

Tara Sulur

Choanoflagellates are single-celled eukaryotic organisms that are the most recent ancestor to multicellular animals. As such, they possess most of the proteins required for the transition to multicellularity. One choanoflagellate protein in particular, Homer, has been shown through immumofluorescence to localize to the nucleus. I will be using transmission electron microscopy with Immunogold staining and membrane fractionation to discover the sub-cellular localization of Homer. In animals, Homer plays a crucial role in adhesion and scaffolding at the synapses of neurons. Since neuro-sensory systems are unique to metazoans, I hope to […]

Marisa Lim

Comparison of DNA sequences between different populations often reveals genetic lineages that warrant further study to assess the validity of current species delineations. Recent genetic work on the California ground squirrel uncovered three morphologically cryptic lineages. The Northern and Central lineages come into contact near Lake Almanor. The Central and Southern lineages meet near Mono Lake. Preliminary work found genetic differences distinguishing the Northern and Central lineages, despite the apparent absence of a geographic barrier to gene flow. In contrast, the Central and Southern lineages are genetically mixed (based on […]

Maria Simanovskaia

Negatively charged nitrogen vacancy centers (NV- centers) in diamond consist of a nitrogen atom next to a vacancy in the carbon lattice. With their small size, these color centers promise magnetometry (measurement of the magnetic field) with an unprecedented combination of sensitivity and spatial resolution. For this application, optically detected magnetic resonance (ODMR) signals must be thoroughly understood. We obtain ODMR signals by focusing 532 nm (green) laser light onto the sample, applying a scan of microwave frequencies by pressing a wire against the diamond surface, and measuring the red […]

Seema Desai

My research focuses on peripheral nerve injury and treatment. Peripheral nerve injury requires medical attention when the severed ends of the nerve are further than a few millimeters apart. If the distance is small, the two nerve ends can regenerate and heal, but if the distance is greater (approximately a couple centimeters), then the two ends must be bridged by a nerve autograft or tubular conduit. My research specifically focuses on potential biomaterial fillers for tubular conduits, which can be modified to create an environment supportive of nerve regeneration. The […]

Elaine Liu

My project seeks to solve the structure of the binding interaction between Mb11 and -tubulin in microtubules. Microtubules are dynamic cytoskeletal polymers essential to life, composed of tubulin subunits, heterodimers of – and -tubulin, which align longitudinally into linear protofilaments and assemble laterally into a cylinder, forming the microtubule. Mb11 is an antibody that has been found to bind specifically to tubulin in the GTP bound conformation. In contrast to GDP bound tubulin, GTP-bound tubulin is straighter and more stable. This difference allows for the specific recognition of the antibody […]

Michael Reeves

Human Cytomegalovirus Virus (HCMV) may go unnoticed in people with healthy immune systems; however, this opportunistic pathogen can be life threatening to immunodeficient individuals including AIDS patients, newborns, and transplant patients. Nucleic acid molecules such as ribozymes are promising gene – interfering agents. This enzymatic RNA accomplishes gene-interference by targeting and cleaving a specific region of mRNA e.g., viral mRNA. In my research I will take advantage of the ability of Salmonella bacteria to enter human cells and transfer genetic material to host cells, leading to efficient expression of the […]

Jenkang Tao

Drugs of addiction use and “hijack” the neuronal systems normally used in reward learning, which makes finding a treatment specific for addiction highly problematic. Several biological markers of addiction have been identified and are potential treatment targets, but their relationship and role in addictive behavior remains unknown. One such marker is the cocaine and amphetamine-regulated transcript (CART) peptide that has been found to be upregulated in select groups of neurons in the brain following systemic injections of cocaine in animals. Although previous studies have characterized the CART peptide as a […]

Minyu Feng

Dark photon is a hypothesized gauge boson which behaves like a standard photon. It is called dark because it interacts very weakly with normal particles like electrons and protons, but instead interacts more strongly with dark matter. This makes dark photons escape previous detections easily. However, some unexpected radiation from the center of our galaxy implies the existence of dark photon. Therefore, we plan to produce dark photon by annihilation of a pair of particle and anti-particle with enough center-of-mass energy. We can look at the decay products of the […]

Io Kleiser

Several newly discovered supernovae, or stellar explosions, are unusually faint and fast-evolving and defy our usual classification schemes. Their light curves (brightness over time) in particular show how quickly they rise to maximum brightness and then decline. They are also unlike any previously known supernovaeand unlike each otherin their electromagnetic spectra. Several attempts have been made to identify the properties of these supernovae and their progenitor stars based on their spectra and light curves, such as the energy of the explosion, the amount of mass ejected, and the elemental composition; […]