3 articles published in JoVE
In Situ Measurement and Correlation of Cell Density and Light Emission of Bioluminescent Bacteria Eveline Brodl1, Johannes Niederhauser1, Peter Macheroux1 1Institute of Biochemistry, Graz University of Technology Bioluminescent bacteria regulate light production through a variety of mechanisms, such as quorum sensing. This novel method allows the in situ investigation of bioluminescence and the correlation of light emission to cell density. An artificial bioluminescent Escherichia coli system allows the characterization of lux operons, Lux proteins, and their interplay.
The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids Adam D. Wexler1, Mónica López Sáenz2, Oliver Schreer2, Jakob Woisetschläger3, Elmar C. Fuchs1 1Applied Water Physics, Wetsus - Centre of Excellence for Sustainable Water Technology, 2IRCAM GmbH, 3Institute for Thermal Turbomachinery and Machine Dynamics, Graz University of Technology Horizontal and vertical electrohydrodynamic liquid bridges are simple and powerful tools for exploring the interaction of high intensity electric fields and polar dielectric liquids. The construction of basic apparatus and operational examples, including thermographic images, for three liquids (e.g., water, DMSO, and glycerol) is presented.
Microwave Assisted Rapid Diagnosis of Plant Virus Diseases by Transmission Electron Microscopy Bernd Zechmann1,2, Gerhard Graggaber1, Günther Zellnig1 1Institute of Plant Sciences, University of Graz, 2Institute for Electron Microscopy and Fine Structure Research, Graz University of Technology This study describes a method that allows the rapid and clear diagnosis of plant virus diseases in about half a day by using a combination of microwave assisted plant sample preparation for transmission electron microscopy and negative staining methods.