A CO2 absorbent for exhaust gas capable of being repeatedly used in capturing and recycling of CO2 is provided. The membranes preferably are capable or forming a shear effect or Dean vortices at their inner surface. The sensor is preferably a radiation-sensitive sensor, which detects the temperature radiation output. A semiconductor circuit is also provided, which includes functional circuit structures and dummy circuit structures, the dummy circuit structures being joined to the additional dummy circuit structures. The media consumed may be one or more of digital audio, a digital still image, digital video, and digital data. The method includes identifying an output statement in the first thread, running the software code so as to generate an output due to the output statement, and intervening in the program so that when the program is run, execution of the first thread is blocked prior to the output statement while the one or more other threads continue to execute.