By around 300 million years ago, the CO2 levels had dropped to somewhere around 1000-3000 ppm, depending upon which model you use, there are at least a dozen with a fairly wide error bar, and with this CO2 rich atmosphere relative to today there was really an ideal atmosphere for life....
The oxidation state of the protein Cys increases upon stimulated ROS-dependent electron drainage or upon decreased electron provision by the reductive pathway(s). Cys-based redox switches function as kinetic sensors. Oxidation of sensitive thiols by O2 should also ...
In the case of devices based on CNTs, hybrid CNT-Si cells have been used as pressure sensors50, or wind sensors47. Self-powering and wearability are two features that could be matched by CNT-Si devices, provided that the devices can be assembled on flexible substrates. The fabrication of ...