Surface Technology for the 21st Century. Chromium-Free Conversion Coating of Zinc Plating Using Mn(II)-Silicate Solution.

Trivalent Chromium Conversion Coating for Corrosion Protection of Aluminum Surface

Corrosion is the degradation or deterioration of metal components due to a reaction with the environment. Chromate conversion coating is applied to passivate metallic surface to slow down (and prevent to some extent) corrosion process. Chromate conversion process uses chromium compounds including hexavalent chromium, which is toxic, carcinogenic and hazardous to human health and environment. He...

the use of appropriate madm model for ranking the vendors of mci equipments using fuzzy approach

abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...

Management Accounting Education for the 21st Century Firms

Management accounting has become a subject of hot debates over the last four decades and has undergone a major transformation. It is argued that traditional management accounting roles have either disappeared or been changed. The debate is based on the belief that roles of ‘Management Accountants’ require new forms of education and training,  with more emphasis on the practicality of the subjec...

O2- Gifted Identification in the 21st Century

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The Challenges of Cognitive Neuroscience in the 21st Century