A window such as a vehicle window has a de-icing feature. ATS is also re-circulated through a separate H2S ContactorAbsorber for absorption of and reaction with a Sour Water Stripper off gas stream and additional H2S-Acid Gas streams to produce additional concentrated ATS. The pattern intensity function may be constructed by taking the summation of functions of the gradients of the difference image. From at least two measurements, a maximum power available may be calculated and compared to power requirements of the remote unit. Further, the hydraulic control apparatus corrects the map so that a variation of the command current with respect to a variation of the target engagement hydraulic pressure is small when decreasing the engagement hydraulic pressure. In the first step of the germination, the CO2-source is exclusively flue gas having a CO2-content of between 4-25% <sb><sb>.