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In recent years, it has become increasingly important to search for alternatives for the development of new materials with sustainable characteristics. This is due to the fact that the environmental problems faced by the whole world have become increasingly worrying due to their serious short and long term impacts. In view of this, the use of materials from reuse and the disposal of polluting waste shows itself as an excellent alternative for the development of new products. Considering the mineral sector as a major generator of solid waste, this study proposed the reuse of agate powder, a residue from the extraction and processing process of agate stone, for the manufacture of ecological bricks. Mechanical compression tests were performed on bricks with 7, 14, 21 and 28 days, thus obtaining a mechanical strength profile. The results obtained were compared with those proposed by NBR 8491 (2012), which proved very promising, being above the values proposed by the standard in all cases. [ABSTRACT FROM AUTHOR]

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The study of nanoparticles has been growing more each day, as well as the interest in the development of research related to nanotechnology. All this interest is largely due to the important properties and innovative applications that nanostructures offer, making possible their use and applicability in various areas of knowledge. Its characteristics present possibilities such as materials improvement, achievment of more precise technologies as well as development of new nanostructured products. All these possibilities are already being studied and developed, progressively proving the capacity of the nanotechnology area and the innovations that it provides us. This work will present some specific properties and applications of these nanostructures, that are extremely important and of great interest in the nanotechnology area. [ABSTRACT FROM AUTHOR]

Nanotechnology is the control of small-scale matter as atomic and molecular. She works in the development of materials and components for various areas of knowledge such as electronics, catalysis, medicine and other areas. Being one of the most benefited electronics. The application of nanotechnology in electronics has brought new concepts to the area allowing to minimize electronic devices, use of semiconductors, conductors, diodes, transistors and other components built in small scales, it can be observed that they are presented smaller and lighter, and more efficient. This technology is increasingly being improved, as all tests show that materials thus converted to nanoscale are more efficient in their performance. [ABSTRACT FROM AUTHOR]

Nanotechnology is the control of small-scale matter as atomic and molecular. She works in the development of materials and components for various areas of knowledge such as electronics, catalysis, medicine and other areas. Being one of the most benefited electronics. The application of nanotechnology in electronics has brought new concepts to the area allowing to minimize electronic devices, use of semiconductors, conductors, diodes, transistors and other components built in small scales, it can be observed that they are presented smaller and lighter, and more efficient. This technology is increasingly being improved, as all tests show that materials thus converted to nanoscale are more efficient in their performance. [ABSTRACT FROM AUTHOR]

The study of nanoparticles has been growing more each day, as well as the interest in the development of research related to nanotechnology. All this interest is largely due to the important properties and innovative applications that nanostructures offer, making possible their use and applicability in various areas of knowledge.Its characteristics present possibilities such as materials improvement, achievment of more precise technologies as well as development of new nanostructured products. All these possibilities are already being studied and developed, progressively proving the capacity of the nanotechnology area and the innovations that it provides us. This work will present some specific properties and applications of these nanostructures, that are extremely important and of great interest in the nanotechnology area, which are the mechanical properties and applications, as well as presenting nanostructures already developed and which have the properties and applications highlighted during the work.. [ABSTRACT FROM AUTHOR]