A methodological method based on the use of theory preferred numbers has been proposed in order to improve most important parameters working bodies noise mufflers. As a result many years scientific research, authors have established previously unknown theoretical relationship between main series numbers, golden ratio and Fibonacci numbers. new direction development number considered paper, its ...

abstract background: at present study, acid modified banana leaf ash was used as an adsorbent for the successful removal of reactive black 5 (rb5) dye from aqueous environments. materials and methods: the effect of various operating parameters such as ph of solution, dye concentration, contact time, adsorbent dosage, and the temperature was investigated. results: maximum adsorption capacity of ...