Related Experiment Video
Updated: May 15, 2025

Protocols for Robust Herbicide Resistance Testing in Different Weed Species
Published on: July 2, 2015
Investigation on possible resistance of Candida auris to irradiation with UVC (254 nm)
Anna-Maria Gierke1, Blende Demelezi1, Martin Hessling1
1Institute of Medical Engineering and Mechatronics, Technische Hochschule Ulm, Ulm, Baden-Wurttemberg, Germany.
Abstract:
Candida auris is a yeast that is increasingly pathogenic due to increased multiresistance to antimycotics. UV (ultraviolet) radiation is still capable of reducing C. auris and offers possible applications in radiation disinfection of surfaces and air. However, it is unknown whether C. auris could also develop a resistance against UV radiation. For this reason, the extent to which C. auris can develop resistance to UVC radiation (254 nm) over several irradiation cycles is being examined. The yeast is irradiated with a UVC dose of 18.2 mJ/cm 2 per cycle, followed by a recovery phase under dark conditions. This irradiation-recovery process was repeated for 16 consecutive cycles, ensuring that the UVC dose of 18.2 mJ/cm 2 remained constant throughout all cycles. It was observed that the log reduction (a log 1 reduction corresponds to a 90% reduction) decreased with increasing number of cycles. Resistance development against UVC could be presented.
More Related Videos
Related Concept Videos
Resistance
Resistance and Conductance
Various factors impact the resistance of a conductor. Spiraling in stranded conductors increases their...
Ohm's Law
This current-resisting behavior of resistors is governed by Ohm's law, which states that the voltage across a resistor is directly proportional to the current flowing through it.
Design Example: Frog Muscle Response
When the switch connecting the RL circuit is closed, a brief muscle contraction is observed. This is because, at a steady state, the inductor acts like a short...
Thevinin's Theorem
Treatment Resistant Cancers

