3 articles published in JoVE
Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device Hoi Yan Ko1, Kevin Dann1, Liat Rosenfeld1 1Department of Chemical Engineering, San José State University We present a protocol to study the formation of hydrates in the presence of nonionic surfactants on the interface of a water droplet submerged in cyclopentane. The protocol consists of building a low-cost, programmable, temperature regulator. The temperature control system is combined with visualization techniques and internal pressure measurements.
Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments Lucia Arsintescu1, Kenji H. Kato2, Cassie J. Hilditch1, Kevin B. Gregory1, Erin Flynn-Evans3 1San Jose State University Research Foundation, 2ASRS Research and Technology Solutions, 3Fatigue Countermeasures Laboratory, NASA Ames Research Center Sleep loss and circadian misalignment contribute to numerous operational accidents and incidents. The effectiveness of countermeasures and work scheduling designs aimed at mitigating fatigue can be challenging to evaluate in operational environments. This manuscript summarizes an approach for collecting sleep, circadian, fatigue, and performance data in complex operational environments.
An In Vitro Adult Mouse Muscle-nerve Preparation for Studying the Firing Properties of Muscle Afferents Joy A. Franco1, Heidi E. Kloefkorn2, Shawn Hochman3, Katherine A. Wilkinson4 1Department of Mechanical Engineering, San José State University, 2J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, 3Department of Physiology, Emory University School of Medicine, 4Department of Biological Sciences, San José State University Muscle sensory neurons are involved in proprioceptor signaling and also report on metabolic state and injury related events. We describe an adult mouse in vitro muscle-nerve preparation for studies on stretch-activated muscle afferents.