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Search Results: 1 - 10 of 1273 matches for " pharmaceutical nanotechnologies "
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Designing a Nano Infrastructure for Brazil’s Amazon Water Resources: A Quadruple Helix Approach  [PDF]
Raul Gouvea
Journal of Water Resource and Protection (JWARP) , 2015, DOI: 10.4236/jwarp.2015.71005
Abstract: This paper elaborates on the role of green technologies and innovations in “greening” Brazil’s Amazon region fresh water resources. The paper elaborates on the development of an innovation quadruple helix to better manage the region’s water resources. Brazil accounts for close to 12% of the earth’s fresh water reserves, while most of it is in the Amazon region. The preservation of water reserves on a global scale is of paramount importance in the 21st century. Brazil, however, has not managed its water resources effectively leading to the increasing pollution and contamination of its Amazonian water resources.
Trojan Microparticles for Drug Delivery
Nicolas Anton,Anshuman Jakhmola,Thierry F. Vandamme
Pharmaceutics , 2012, DOI: 10.3390/pharmaceutics4010001
Abstract: During the last decade, the US Food and Drug Administration (FDA) have regulated a wide range of products, (foods, cosmetics, drugs, devices, veterinary, and tobacco) which may utilize micro and nanotechnology or contain nanomaterials. Nanotechnology allows scientists to create, explore, and manipulate materials in nano-regime. Such materials have chemical, physical, and biological properties that are quite different from their bulk counterparts. For pharmaceutical applications and in order to improve their administration (oral, pulmonary and dermal), the nanocarriers can be spread into microparticles. These supramolecular associations can also modulate the kinetic releases of drugs entrapped in the nanoparticles. Different strategies to produce these hybrid particles and to optimize the release kinetics of encapsulated drugs are discussed in this review.
M.V. Vasiljeva,G.E. Muslimova
Voprosy Sovremennoj èkonomiki , 2013,
Abstract: The article discloses the role of venture capital in the development of nanoindustry in Russia compared to other sources of funding nanotechnology projects in terms of its integration into the global innovation environment. The main problems of the venture industry in Russia and prerequisites of the existing model of venture funding of nanotechnology transformation are identified as well as conceptual directions for improvement are developed.
Stability and flocculation of nanosilica by conventional organic polymer  [PDF]
Mohamed Bizi
Natural Science (NS) , 2012, DOI: 10.4236/ns.2012.46052
Abstract: More than 2,000,000 tons of silica nanoparticles (NPs) are produced annually in the world to cover the needs of nanotechnologies. Inevitably, a quantity of NPs, will be in industrial discharges and domestic, or even in water resources. Share their high surface reactivity, these NPs may also carry with them through a specific adsorption of other toxic chemical pollutants inherent to the industrial sectors. To preserve public health and the environment from this pollution, it is necessary to remedy the potential pollution. In this context, the main motivation of this work is to answer this environmental issue by proposing a scheme of remediation based on the use of a conventional treatment process. The process of elimination nanoparticles by coagulation/flocculation was selected for its simplicity and also for its universal use. The NPs of industrial silica S30R50 were used as support to develop the process. The optimization of coagulation/flocculation, was greatly facilitated by the use of laser diffraction online. This technique allowed to follow the dynamic character of the treatment and to determine the size and the most relevant textural parameters (density, porosity and fractal dimension) of the flocs depending on the nature of the used reagents. The critical concentrations of different coagulants and flocculants used were determined by electrophoresis and turbidity. The ratio of their charge density/molecular weight has conditioned the quality of separation, the floc size and their texture. Excellent coagulation/flocculation performances are reached using organic reagents authorized by the Directorate General for Health of several countries. After optimization of the process, the size distributions are between 10 μm and 1 mm, with fractal dimensions (compactness) ranging from 2.3 to 2.5. The performances obtained show that the use of cationic polymers is a promising potential route to treat other types of NPs. The treatment proposed to reach a ratio of average diameters dFloc/dNP of 3500, and therefore it facilitates the elimination of these NPs agglomerated by filtration.
Nanotecnología: gestión y reglamentación de riesgos para la salud y medio ambiente en América Latina y el Caribe
Foladori, Guillermo;Bejarano, Fernando;Invernizzi, Noela;
Trabalho, Educa??o e Saúde , 2013, DOI: 10.1590/S1981-77462013000100009
Abstract: 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 overviewing the development of nanotechnology in the region and the scientific evidence available on the risks brought about by nanotechnology. it proposes an approach to identify the players that should be involved in the discussion and in risk management based on the nanoparticles' life cycle. the article also proposes a few of the conditions needed to encourage the responsible development of nanotechnology from sectors such as the saicm, and brings into the discussion the eight relevant items from over a hundred environmental organizations and workers under the supervision of nanotechnologies and nanomaterials.
STANDARDIZATION OF TERMS IN THE FIELD OF NANOTECHNOLOGIES (PART 1) Стандартизация терминов в области нанотехнологии (часть 1)
Pavligo T. M.,Plomodyalo R. L.,Svistun L. I.,Serdyuk G. G.
Polythematic Online Scientific Journal of Kuban State Agrarian University , 2013,
Abstract: The article describes the existing standards and draft standards for the terms in the field of nanotechnology. The generalization of specific terminology in the field of nanotechnology, the terms used to define the nanostructures, carbon nanomaterials and nanostructured materials is presented
M.V. Vasiljeva
Voprosy Sovremennoj èkonomiki , 2013,
Abstract: Start from the main technical and economic characteristics of nanotechnologies, in the article it is shown that to innovative policy in the sphere of nanotechnologies in Russia doesn’t get systematic vision of innovative processes. Attempt to prove that economic subventions as one of the main tools used in Russia for assistance to nanotechnologies – important, but the insufficient tool for achievement of the objectives for which they are intended is made.
Synthesis of metal nanoparticles in living plants
Luca Marchiol
Italian Journal of Agronomy , 2012, DOI: 10.4081/ija.2012.e37
Abstract: In recent years, nanotechnologies have evolved from a multidisciplinary research concept to a primary scientific field. Rapid growth of new technologies has led to the development of nanoscale device components, advanced sensors, and novel biomimetic materials. In addition to chemical and physical approaches a new, simple and cheaper strategy to synthesize metal nanoparticles utilizes biological tools such as bacteria, yeasts, fungi, and plants. The majority of research has investigated ex vivo synthesis of nanoparticles in plants, proving that this method is very cost effective, and can therefore be used as an economic and valuable alternative for the large-scale production of metal nanoparticles. Instead, very few studies have been devoted to investigating the potential of living plants. The synthesis of metal nanoparticles using living plants is discussed in this review. So far, metal NPs formation in living plants has been observed for gold, silver, copper and zinc oxide. To date the results achieved demonstrate the feasibility of this process; however several aspects of the plant physiology involved should be clarified in order to be able to gain better control and modulate the formation of these new materials. Plant sciences could significantly contribute to fully exploring the potential of phyto-synthesis of metal nanoparticles.
Nanotechnologies and Ethical Argumentation: A Philosophical Stalemate?  [PDF]
Georges A. Legault, Johane Patenaude, Jean-Pierre Béland, Monelle Parent
Open Journal of Philosophy (OJPP) , 2013, DOI: 10.4236/ojpp.2013.31004

When philosophers participate in the interdisciplinary ethical, environmental, economic, legal, and social analysis of nanotechnologies, what is their specific contribution? At first glance, the contribution of philosophy appears to be a clarification of the various moral and ethical arguments that are commonly presented in philosophical discussion. But if this is the only contribution of philosophy, then it can offer no more than a stalemate position, in which each moral and ethical argument nullifies all the others. To provide an alternative, we must analyze the reasons behind the prevailing individual and cultural relativism in ethics. The epistemological investigation of this stalemate position will guide us to the core problem of the relation between theory and action (“Part 1: From a conceptual to a speech act analysis of moral arguments”). The stalemate can be overcome from a pragmatic philosophical standpoint, which combines epistemology, philosophy of language—that is, the philosophy of speech acts—and practical reasoning—that is, reasoning about decision-making (“Part 2: Moral argumentation from a pragmatist perspective”). From this philosophical standpoint, it will be possible to show how philosophy can accompany and support the development of nanotechnologies (“Part 3: Philosophy and the evaluation of the development of nanotechnologies”).

Reflex?es acerca das nanotecnologias e as novas densidades técnicas-científicas-informacionais na agricultura
de Fátima Ramos, Soraia;Martins, Roberto;Domingues Dulley, Richard;de Assump??o, Roberto;Alves e Nogueira, Elizabeth;Nogueira Junior, Sebasti?o;Zeferino Barbosa, Marisa;de Souza Lacerda, André Luiz;
Estudios sociales (Hermosillo, Son.) , 2009,
Abstract: researches about nanotechnologies potential uses in agribusiness raise huge doubts of real benefits or harms in relation to this innovation adoption. therefore concern of this investigation in including humanities in the debate about nanotechnologies diffusion. it is presupposed that given nanotechnologies effective incorporation to new nanotechnology products and processes, it will configure an informational scientific techniques density deepen in brazilian agrarian space.
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