Jehan Yang
Utilizing 27 degrees of freedom, the human hand is a complex manipulator capable of tasks ranging from fingerstyle guitar to precise surgery. To replicate the human hand would produce a highly versatile tool in robotics and prostheses. Robots in the future might perform surgery while arm amputees could perform as well as anyone in sports and arts. Current hand replications have limitations of high expense and weight, with trade-offs in precision. For his project, Jehan aims to create an inexpensive and light manipulator, with improvements for precise control. He will […]
Victor Chen
Actinomycetes, filamentous soil bacteria, have been the single richest source of medicinally relevant natural products, whose applications include anticancer agents, antifungal agents and antibiotics. However, actinomycetes still hold great potential for novel metabolite discovery. This is because the way they are typically grown in the laboratory fails to mimic cues in their natural environments that potentially induce the synthesis of novel metabolites. During this project, Victor will place actinomycetes in ecologically relevant contexts by reintroducing them to bacteria they would naturally encounter, in binary interactions, and subsequently analyze the metabolites […]
Daniel Quintana
In mammals, detecting weak stimuli is crucial for animal survival. One way they could detect weak stimuli is spatial integration, pooling together weak signals over an area of visual space to strengthen the signal. In the cortex, vasointestinal peptide (VIP) cells are a group of interneurons that have a central role in pyramidal cell tuning and response modulation of other interneurons. However, the mechanisms behind how signals from different inhibitory interneurons affect the codification of sensory stimuli into percepts remains unclear. He will optogenetically activate and inhibit VIP interneurons in […]
Justin Baik
How does the brain convert sensory information to help us navigate around space? Spatial learning is what Justin believes to be the key in building the bridge between sensory input and navigation. The striatum, a region of the mammalian brain known to be crucial for spatial learning, will be deeply examined using the methods of optogenetics. In his project, Justin will be building methods to optically control striatal regions of freely behaving bats, and examine the neural circuitry that allows their sophisticated navigation around complex environments to be made possible. […]
Xiaoyu Niu
Yoshitaka Maeda made the conjecture in 1997: Let m be an integer greater than 1 and let F be the characteristic polynomial of the Hecke operator T_m acting on the space S_k of cusp forms of weight k and level one, then the polynomial F is irreducible over the field of rational numbers; the Galois group of the splitting field of F is the full symmetric group _d, where d is the dimension of S_k. Most recent computations via Sage have verified the conjecture for k 14000. Xiaoyus project will […]
Ahmad Al-Zughoul
Visual working memory is a limited, short-term mental storage system that holds task-relevant visual information in mind and is important for visually guided behavior. Recent studies have suggested that visual working memory is closely linked to visual perception, implemented in overlapping brain regions and sharing similar brain circuitry. Ahmad’s research project will investigate the effects of the neurotransmitters acetylcholine and dopamine, which are known to play important roles in visual perception and in working memory, respectively, by combining pharmacologic manipulation of these neurotransmitters while measuring behavioral performance in a visual […]
Nicholas Carey
Kaposis Sarcoma Associated Herpesvirus (KSHV) establishes lifelong infections and can cause a variety of cancers and proliferative disorders in immunosuppressed individuals. Recent evidence indicates that oral contact is the primary route of transmission for KSHV. The goal of this project is to elucidate the mechanism of reactivation for transmission of KSHV in the hopes of developing novel treatments to reduce the incidence of infection in the community. Nicholas will infect human oral keratinocytes with several KSHV mutants, and qPCR will be used to analyze transcription patterns to determine the role […]
Juliana Wu
Intercropping with legumes is an agricultural practice where crops are cultivated with a legume, commonly fava, that is capable of fixing nitrogen and increasing soil fertility. Juliana’s study aims to measure the effect of crop spacing and density on facilitative and competitive interactions for nitrogen and phosphorus in an intercropping system of fava bean (Vicia faba) and broccoli (Brassica oleracea var. italica) in a combined greenhouse and field experiment. The field experiment will implement varying treatments of spacing, fava density, and harvesting time. The greenhouse experiment will incorporate root barriers […]
Mohammad Saffari Doost
Sleep is essential for human health. In particular, insufficient or low-quality sleep causes higher risks for cardiovascular diseases. Mammals exhibit distinct rapid eye movement (REM) sleep and non-REM sleep, and non-REM sleep is associated with lower heart rate and blood pressure. However, how neural circuits coordinate sleep and heart functions remains unclear. The nucleus ambiguus (Amb), located deep in the medulla, contains cardioinhibitory cholinergic neurons. Activating Amb neurons decreases the heart rate. Mohammad will identify the sleep neurons that activate Amb cholinergic neurons using virus-mediated retrograde tracing. He will also […]
Andy Nguy
Enzymes are highly efficient biological catalysts. Understanding how enzymes catalyze chemical reactions into physiological relevant rates is of great interest. Moreover, electron and proton transfers are ubiquitous in biological processes, yet it has now become clear that such electron and proton transfers may have quantum mechanical effects. Andy will be studying soybean lipoxygenase, a model enzyme that accomplishes it’s catalysis through a proton and electron transfer known as hydrogen tunneling, a purely quantum mechanical phenomenon. In an effort to better understand how catalysis is achieved through hydrogen tunneling, he will […]