MEMS sensor-based system for pulse-wave acquisition
Traditional Chinese medicine has been existing for more than two thousand years. And it consists of four diagnostic methods, observing, smell, inquiry and pulse-taking. Among them, pulse-taking is the most important one. However, it always takes decades for a practitioner to master this skill, because it need long-time experience and is subjective. Maybe after reading hundreds of pulse-taking books, learning thousands of pulse-taking rhymes by heart, he cannot tell what is the classification of the specific pulse under his fingers. As wearable device and big data becomes buzzwords, we want to use the combination of them to act as a traditional Chinese doctor. Its learning and practicing will be achieved by the training process on the multi-dimensional pulse-wave data from different people. Our focus is on the hardware part, namely the MEMS sensors. They can be embedded in a smartwatch or band, mimic doctor’s three fingers, and acquire the detailed wave-form of the pulse on the wrist. In some sense, such MEMS sensor-based system is even more dutiful than doctors since it can monitor health status continuously 24/7.
Speaker: Yao Chu
Department of Mechanical Engineering, UC Berkeley
Yao Chu is a Ph.D. candidate at Sensors and Microsystems Laboratory, Tsinghua-Berkeley Shenzhen Institute. She received her B.S. degree (2014) of Mechanical Engineering from Shanghai Jiao Tong University, China and M.S. degree (2015) of Mechatronic and Robotic Systems from University of Pennsylvania, United States. Her research interests include wearable electronics and paper-based electronics.
The Study of Cambi Centrate Effects on Anammox Process
The deammonification process is a combination of nitritation process and Anammox process. As a cost effective biological nitrogen removal process, it has been successfully applied for centrate nitrogen removal. Cambi thermal hydrolysis process (THP), as a pretreatment process for anaerobic digestion, is another promising innovation at the wastewater treatment plant. However, previous work by DC water reported that the deammonification process is inhibited by Cambi centrate. Our current work establishes a two-stage deammonification process and focuses on the study of Cambi centrate effects on Anammox Process. Long-term and short- term tests have been studied to reveal the threshold of Cambi centrate that can be applied to Anammox process and the kinetics of the inhibition. Our findings can help San Francisco wastewater treatment plant to build a robust biological process for treating high-strength Cambi centrate.
Speaker: Yuan Li
Department of Civil & Enviromental Engineering, UC Berkeley
Yuan Li is a Ph.D. Candidate in the Environmental Engineering program at Cal. Her supervisor is Professor Slav Hermanowicz. Yuan obtained her bachelor's degree from Tongji University in the area of biological science. She obtained her master's degree from Tufts University, majoring in Bioengineering. Her research at Cal is concentrated at biological nitrogen removal processes.