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28 Examples of natural polyesters of bacterial origin. 

28 Examples of natural polyesters of bacterial origin. 

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The exact nature of the environmental hazards generated by the release of various synthetic chemicals into the environment is under constant debate. There is little doubt that this debate will continue until science unequivocally resolves the uncertainties in toxicological data (exposure, fate, and transport) and risk analyses.


... reen manufacturing concerns about environmental sustainability during manufacturing and entire product life cycle as the main criterion for adopting green practice and strategy [7]. It is in particular to enhance innovative green thinking in product design and material selection, and green practice in production, packaging technology, and remaining close loop system in life cycle based on zero/minimum environmental impact deliberative method [8]. Effective goal and strategy are important in green manufacturing. ...
Conference Paper
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Companies must be more environmentally conscious, focus on sustainable practices and materials, and become more socially responsible corporations. Current manufacturing activities have caused the degradation of the environment, the depletion of resources at an accelerated rate, global warming, and affected the quality of life. New technologies, the short life cycle of products consumed more resources that hinder sustainable growth. Thus, companies have to transform their manufacturing activities, not only to increase competitiveness but to consider the impact of their activities on the environment in a socially responsible manner. Environmental conscious manufacturing when practiced addressed the environmental necessity and provide the means of managing the depletion of resources. Enhancing the understanding of the practices of ECM and their impacts on the environment will enable companies to develop their manufacturing strategies
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The development of human civilization is characterized by the type of material used by society. The rapid development of material engineering and technology produces a variety of advanced materials such as smart materials, natural materials, chemical materials, nanomaterials, advanced materials, and environmentally friendly materials. Ionic Liquids (ILs) have criteria that are expected to be environmentally friendly because of their Green Chemistry (GC). The vocational syllabus needs to be reconstructed to be able to adapt this material technological progress. The purpose of this study was to determine the opinions of lecturers on the adoption of Ionic Liquid material teaching materials in vocational education in an effort to deal with the use of environmentally friendly materials that are indispensable in the industrial field. The subject of the study was taken through a purposive sampling method. There were 5 lecturers in one of the private polytechnics. Data collection through questionnaires is intended to determine the views of lecturers on ionic fluid material teaching materials and analyze the material requirements to be adopted into the vocational curriculum. The investigation results show that the interest and willingness of the lecturer to study and disseminate reached a score of 80%, this means that the lecturer needed the Ionic Liquid material. However, the teacher’s understanding score still needs to be improved, so that it is necessary to design an Ionic Liquid teaching material that is interesting and easy to understand by both lecturers and students. The implications of this study can be used as recommendations in learning to be able to enrich the syllabus by adding Ionic Liquid material teaching material as an indispensable teaching material along with technological advances in industry 4.0.