Nanotechnologies
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. SÍNTESE E CARACTERIZAÇÃO DE PONTOS QUÂNTICOS AMBIENTALMENTE AMIGÁVEIS, UM MEIO SIMPLES DE EXEMPLIFICAR E EXPLORAR ASPECTOS DA NANOCIÊNCIA E NANOTECNOLOGIA EM CURSOS DE GRADUAÇÃO
Nanotechnologies and nanomaterials are very current and interesting topics and can be used as interdisciplinary tools in education. They can be used to work in a practical and interesting way with lots of subjects. In chemistry teaching it can be particularly important to consolidate the nanomaterials, nanotechnology and characterization teaching. Among the
Quím. Nova. Publicado em: 2020-06
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2. Nanotecnología: gestión y reglamentación de riesgos para la salud y medio ambiente en América Latina y el Caribe
This article addresses the discussion concerning the risks posed by manufactured nanoparticles held during regional meetings in Latin America and the Caribbean by the SAICM (Strategic Approach to International Chemicals Management/Enfoque Estratégico para la Gestión de Productos Químicos a Nivel Internacional). It contextualizes this discussion by overvie
Trab. educ. saúde. Publicado em: 2013-04
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3. Nanotecnologia: indicadores tecnológicos sobre os avanços em materiais a partir da análise de documentos de patentes / Nanotechnology: technological indicators on advances in materials based on patent analysis
Nanotechnology is a technological advance of several fields, regarded to be emergent, universal and diffuse field, involving mainly the development of nanomaterials, which can show different properties and behaviors. The possible impact in the society sustainable development becomes important the monitoring of nanotechnologies and nanomaterials in order to p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/09/2011
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4. Síntese, caracterização e estabilização de nanopartículas de prata para aplicações bactericidas em têxteis / Synthesis, caracterization and stabilization of silver nanoparticles for bactericidal aplication in textiles
This work aimed the study of silver nanoparticles synthesized by chemical reduction to their application in textiles, exploiting the bactericidal power of metallic silver. After an introduction to nanotechnology, colloidal stabilization of nanoparticles and the properties of silver as a bactericidal agent, it was discussed the methods of synthesis by reducti
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/06/2011
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5. Estudo da interação de nanotubos de carbono com substrato de quartzo cristalino
Single wall carbon nanotubes (SWNTs) are quasi-onedimensional structures consisting of a rolled up graphene nanoribbon. Due to their unusually large surface-to-volume ratio, SWNTs are strongly affected by the environment. Contact with a supporting substrate modifies their properties, and such interactions have been broadly studied as either a drawback or a s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/03/2011
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6. A review on carbon nanotubes in an environmental protection and green engineering perspective
Recent developments in nanotechnologies have helped to benchmark carbon nanotubes (CNTs) as one of the most studied nanomaterials. By taking advantages of CNTs extraordinary physical, chemical and electronic properties, a wide variety of applications has been proposed in various engineering fields. In this short review, the contribution of CNTs is addressed
Brazilian Journal of Chemical Engineering. Publicado em: 2010-06
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7. The role of nonequilibrium thermo-mechanical statistics in modern technologies and industrial processes: an overview
The nowadays notable development of all the modern technology, fundamental for the progress and well being of world society, imposes a great deal of stress in the realm of basic Physics, more precisely on Thermo-Statistics. We do face situations in electronics and optoelectronics involving physical-chemical systems far-removed-from equilibrium, where ultrafa
Brazilian Journal of Physics. Publicado em: 2010-03
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8. Engaging nanotechnologies: a case study of 'upstream' public engagement
Este artigo desenvolve uma análise dos fatores suscetíveis de moldarem as respostas futuras do público frente às dimensões sociais e éticas das nanotecnologias emergentes. A pesquisa foi construída para oferecer insights sobre as seguintes questões: quais os tipos de questões capazes, nas circunstâncias atuais, de moldar as atitudes do público sob
Ambiente & Sociedade. Publicado em: 2009-06
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9. Aproveitamento sustentável de biomassa e de recursos naturais na inovação química
Increased production of biomass is currently the only immediately accessible alternative for large-scale carbon sequestration and it can produce large amounts of food, fuel and raw materials for the chemical industry that can in turn growingly replace oil as a source of organic building blocks and also of hydrogen and sulfur. Development of processes for bio
Quím. Nova. Publicado em: 2009
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10. Nanotecnologia no agronegócio: um estudo econômico do uso da língua eletrônica na cafeicultura.
Following the Schumpeterian theoretical approach this work is founded in the conception that the world economic history is a history of technological revolutions. These revolutions are impel by the development of new products and new process of production and distribution that incessantly revolutionize the economic system from inside. In this context it is a
Publicado em: 2006
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11. Nanotechnologies and controlled release systems for the delivery of antisense oligonucleotides and small interfering RNA
Antisense oligonucleotides and small interfering RNA have enormous potential for the treatment of a number of diseases, including cancer. However, several impediments to their widespread use as drugs still have to be overcome: in particular their lack of stability in physiological fluids and their poor penetration into cells. Association with or encapsulatio
Blackwell Publishing Ltd.