This compilation opens with a study on the catalytic conversion of methanol to olefins, mainly SAPO-34 and ZSM-5, as well as the synthesis, properties, applications. A description of phenylalanine ammonia-lyase is presented in relation to structure, localization, expression, regulation, assay methods and the factors influencing phenylalanine ammonia-lyase activity, as well as its importance to the phenylpropanoid pathway for plant growth and development. The authors critically analyze the development of molecular nanocatalysts based on organochalcogenligands and their applications in the transfer of hydrogenation. Following this, the progress in applications of dimensional analysis and similarity theory in electrochemical kinetics and electrochemical engineering is discussed. The use of dimensionless groups in problems of current density distribution and electrochemical mass transfer is described and the similarity criteria involved are considered. The authors focus on various solvent-minimized sample pre-treatment procedures which are inexpensive and offer minimal exposure to toxic organic solvents during sample analysis. The concluding chapter explores bis-azides, i.e., organic compounds presenting two azido groups in their structures. Their utility in synthetic group transformation is covered, as well as in polymer chemistry, the preparation of bioactive compounds, click chemistry, and in the synthesis of cross-linked DNA.