3 articles published in JoVE
Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors Armin Howell1, Colin Tucker1, Edmund E. Grote1, Maik Veste2,3, Jayne Belnap1, Gerhard Kast4, Bettina Weber5,6, Sasha C. Reed1 1Southwest Biological Science Center, U.S. Geological Survey, 2Centre for Energy Technology Brandenburg, 3Institute of Environmental Sciences, Brandenburg University of Technology Cottbus-Senftenberg, 4Umweltanalytische Produkte GmbH, 5Institute of Plant Sciences, University of Graz, 6Multiphase Chemistry Department, Max Planck Institute for Chemistry Accurately measuring temperature and water content of the upper 5 mm of the soil surface can improve our understanding of environmental controls on biological, chemical, and physical processes. Here we describe a protocol for manufacturing, calibrating, and conducting measurements with soil surface temperature and moisture sensors.
Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment Katharina Brinkert1,2, Ömer Akay3, Matthias H. Richter1,4, Janine Liedtke2, Katherine T. Fountaine5,6, Hans-Joachim Lewerenz7, Michael Giersig3,8 1Division of Chemistry and Chemical Engineering, California Institute of Technology, 2European Space Agency/ ESTEC, 3Department of Physics, Freie Universitat Berlin, 4Applied Physics and Sensors, Brandenburg University of Technology Cottbus, 5Resnick Sustainability Institute, California Institute of Technology, 6NG Next, Northrop Grumman Corporation, 7Division of Engineering and Applied Science and Joint Center for Artificial Photosynthesis, California Institute of Technology, 8International Academy of Optoelectronics at Zhaoqing, South China Normal University Efficient solar-hydrogen production has recently been realized on functionalized semiconductor-electrocatalyst systems in a photoelectrochemical half-cell in microgravity environment at the Bremen Drop Tower. Here, we report the experimental procedures for manufacturing the semiconductor-electrocatalyst device, details of the experimental set-up in the drop capsule and the experimental sequence during free fall.
Eye-Tracking Control to Assess Cognitive Functions in Patients with Amyotrophic Lateral Sclerosis Jürgen Keller1, Martin Gorges1, Helena E. A. Aho-Özhan1, Ingo Uttner1, Erich Schneider2, Jan Kassubek1, Elmar H. Pinkhardt1, Albert C. Ludolph1, Dorothée Lulé1 1Department of Neurology, Ulm University, 2Institute of Medical Technology, Brandenburg University of Technology Cottbus-Senftenberg Cognitive deficits are common in about one third of patients with amyotrophic lateral sclerosis, a neurological condition leading to progressive impairments in speech and movement abilities. To conduct cognitive tests in patients unable to speak or write a reliable and easy to administer eye-tracking paradigm was developed.