Micro reciprocating piston internal combustion engines are potentially desirable for high-energy density micro power sources. However. complex subsystem functions hinder the downsizing of reciprocating piston internal combustion engines. The homogeneous charge compression-ignition (HCCI) combustion mode requires no external ignition system; it contributes to structural simplification ... https://nitiir7wictq.celticwiki.com/1456066/efficacy_of_f_acp_containing_dental_mousse_in_the_remineralization_of_white_spot_lesions_after_fixed_orthodontic_therapy_a_randomized_clinical_trial