The invention provides a multi-functional assembly for toilet products useful in the toilet space by designing an air freshener that has functions of deodorizing and aromatizing air into an hanging assembly that can joint with other toilet products such as the toilet-paper roll, the tooth mug, the tooth brush and the like. The opening and closing cam followers are linked to each other directly by a tension member so they move in unison. Further provided are the antibodies that immunospecifically bind to a ARPBRP polypeptide or any derivative, variant, mutant or fragment of the ARPBRP polypeptide, a ARPBRP multimer polynucleotide or antibody. A number of unreliable bits of the codeword is determined when the decoding is the decoding failure. After resolving the HMD wearer’s head position, the HMD wearer’s total field of view may be classified into regions. Systems for extracting oil from underground reservoirs are also disclosed comprising a gas compression system operable to pump oxygen from an oxygen source into the underground reservoir.