POKA-YOKE: MISTAKE PROOFING TO ACHIEVEZERO DEFECTS

Advanced manufacturing is the use of innovative technology to improve products or processes. Now-a-days POKA YOKE’S made by new technologies are used for mistake proofing to achieve ‘ ZERO DEFECT ’. Poka Yoke focuses on eliminating the defects of human origination by reducing the opportunity for defects. Naturally human beings are not mistake proofed, therefore we can’t eliminate all the mistakes done by human beings. But organization can avoid these mistakes from reaching to the customer, which is known as a defect in this case. Japanese manufacturing engineer Shigeo Shingo develops the quality assurance technique Poka Yoke

From Conventional Lewis Acids to Heterogeneous Montmorillonite K10 Eco-Friendly Plant-Based Catalysts Used as Green Lewis Acids

International audienceThe concept of green chemistry began in the USA in the 1990s. Since the publication of the 12 principles of this concept, many reactions in organic chemistry have been developed, and chemical products have been synthesized under environmentally friendly conditions. Lewis acid mediated synthetic transformations are by far the most numerous and best studied. However, the use of certain Lewis acids may cause risks to environmental and human health. This Review discusses the evolution of Lewis acid catalyzed reactions from a homogeneous liquid phase to the solid phase to yield the expected organic molecules under green, safe conditions. In particular, recent developments and applications of biosourced catalysts from plants are highlighted. © 2018 Wiley-VCH Verlag GmbH and Co. KGaA, Weinhei