A system for remote detection of a chemical is disclosed. In some examples, a method performed under control of an end device may include obtaining a decryption key; decrypting encrypted information based on the obtained decryption key; and rendering the decrypted information stored in a video random access memory that is operatively connected to a graphic processing unit of the end device. The injection water intended to be introduced into the underground formation is produced partly in a direct-osmosis unit from produced water and partly in a nanofiltration andor reverse-osmosis unit. The knowledge base of application groups is previously constructed based on a large number of sample applications. In a preferred embodiment these optimization adjustments are made automatically and continuously as a user pauses at points for Doppler measurements along a length of the blood vessel. In addition the binder components are stable or at least remixable for up to 4 d in the absence of the hardener, which makes them particularly suitable for back filled grouts.