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Search Results: 1 - 10 of 33236 matches for " Oliveira Emerson "
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Rationalizing the Use of Water in Industry—Part 2: Instruments Developed by the Clean Technology Network in the State of Bahia  [PDF]
Asher Kiperstok, Karla Esquerre, Ricardo Kalid, Emerson Sales, Geiza Oliveira
Journal of Environmental Protection (JEP) , 2013, DOI: 10.4236/jep.2013.45058
Abstract:

The instruments developed by the Clean Technology Network of Bahia (TECLIM) at the Federal University of Bahia (UFBA) (cited in Part 1 of this paper) are presented. Factors regarding water management in industry were examined, on the basis of experience acquired over the period of a decade in cooperative research projects with large industrial process plants located mostly in the Camacari Petrochemical Complex, Bahia State, Brazil. The main results consist of training about 1700 industry professionals in CP, the identification of about 500 ideas for the rationalization of water use, the presentation and publication of 90 articles in journals, conferences and other academic events, identification of ideas with potential water savings estimated at around 1400 t·h1 and the reduction of at least 500 t·h–1 in effluents. Other sectors that make use of water, for example public buildings, commercial buildings, homes, shopping centers and airports can adapt and use the TECLIM method as will be exemplified.

Rationalizing the Use of Water in Industry—Part 1: Summary of the Instruments Developed by the Clean Technology Network in the State of Bahia and Main Results Obtained  [PDF]
Asher Kiperstok, Karla Esquerre, Ricardo Kalid, Emerson Sales, Geiza Oliveira
Journal of Environmental Protection (JEP) , 2013, DOI: 10.4236/jep.2013.45057
Abstract:

Based on cleaner production concepts, a method for water use minimization has been developed by the Clean Technology Network of Bahia (TECLIM) at one of the largest industrial complexes in Latin America located in the State of Bahia, Brazil. This method is concerned with an area of secondary interest to the productive sector: the use of water. Based on the best cleaner production principles (CP), nine instruments have been developed during cooperative projects with chemical, petrochemical and copper metallurgical industries. These instruments are described in Part 2 of this paper [1]. The main benefits derived from partnership schemes include: a reduction in water consumption and effluent generation; the development of a techno-operational culture to increase eco-efficiency; and the introduction of conceptual projects to ensure the continuity of the activities in the company after the projects have been completed. The specific consumption of water was reduced by 20% as a consequence of the application of this method in Company A; a specific reduction in the generation of effluents of more than 40% was observed in Company B; a 42% fall in fresh water consumption in Company C; and a 20% decrease in the cost of effluent treatment in Company D. Among the difficulties encountered were the limited time availability of the operators and engineers for the project, the lack of measurement and calibration of available flow meters and the lack of detailed technical data.

Memória e mercado: o relato do outro
Emerson Dionisio Gomes de Oliveira
OPSIS : Revista do Departamento de História e Ciências Sociais , 2007,
Abstract:
O legado artístico de Nicolas-Antoine Taunay e a polêmica "Miss o Francesa"
Emerson Dionísio Gomes de Oliveira
OPSIS : Revista do Departamento de História e Ciências Sociais , 2008,
Abstract: SCHWARCZ, Lilia Moritz. O Sol do Brasil: Nicolas-Antoine Taunay eas desventuras dos artistas franceses na corte de D. Jo o. S o Paulo:Companhia das Letras, 2008.
Application of NMR Relaxometry to Study Nanostructured Poly(vinyl alcohol)/MMT/Cephalexin Materials for Use in Drug Delivery Systems  [PDF]
Antonio de Pádua Castelo Branco Cunha, Maria Inês Bruno Tavares, Emerson Oliveira da Silva
Materials Sciences and Applications (MSA) , 2016, DOI: 10.4236/msa.2016.77034
Abstract: Polymers containing nanoparticles dispersed and distributed in the matrix can be used for control of drug release. In this work, hydrophilic matrix systems were prepared using poly(vinyl alcohol) and unmodified clay containing the same amount of cephalexin. The materials were obtained through in situ polymerization and were characterized by the conventional technique of FTIR and NMR relaxometry, through determination of proton spin-lattice relaxation time, in order to understand the molecular behavior of the new materials. The NMR relaxometry data showed that the new materials containing low quantities of clay (0.25% and 0.75%) and the same amount of cephalexin (0.5 g) had very good dispersion and distribution of the clay and drug in the polymer matrix. The combination of clay and cephalexin formed a more homogenous material with a narrow domain curve and low relaxation values. The material containing 0.25% clay presented a mixed morphology, with part exfoliated and part intercalated, as could be seen from the relaxation domain distribution, which was larger than that for material with 0.75% clay.
Effect of the Addiction of Metal Oxide Nanoparticles on the Physical, Chemical and Thermal Properties of PVA Based Nanocomposites  [PDF]
Raquel Couto de Azevedo Gon?alves Mota, Emerson Oliveira da Silva, Lívia Rodrigues de Menezes
Materials Sciences and Applications (MSA) , 2018, DOI: 10.4236/msa.2018.95033
Abstract: In this study, poly(vinyl alcohol) (PVA)-based nanocomposites consisting of metallic oxide nanoparticles (TiO2, ZnO, ZrO2) were obtained from an aqueous solution of 7% PVA, in order to compare the microstructural, and physical properties of bionanocomposite films reinforced with various loading contents (0.1%, 0.2% and 0.3% w/w). They were evaluated regarding their molecular toughness through Nuclear Magnetic Resonance (NMR), regarding their chemical structural through Fourier Transform Infrared Spectroscopy (FTIR), regarding their crystallinity throught X-ray Diffraction (XRD), and regarding termal properties through Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). The NMR results showed that the smallest concentrations of these oxides have a tendency to disperse better in the polymeric matrix, improving the structural toughness. Besides, changes in the termal resistance of the material were found with the use of TGA and DSC.
Polymer Nanocomposites Used as Scaffolds for Bone Tissue Regeneration  [PDF]
Raquel Couto de Azevedo Gon?alves Mota, Emerson Oliveira da Silva, Lívia Rodrigues de Menezes
Materials Sciences and Applications (MSA) , 2018, DOI: 10.4236/msa.2018.98049
Abstract: Scaffolds are three-dimensional biocompatible structures that can mimic the properties of the extracellular matrix (ECM) of a given tissue, like mechanical support and bioactivity, which provides a platform for cellular adherence, proliferation and differentiation. Consequently, scaffolds are frequently used in tissue engineering with the intention of assisting the regeneration of a damaged tissue, and a major application in bone regeneration. An ideal scaffold needs to be biodegradable, biocompatible, and needs to match the biomechanical properties of bone. Polymers are widely used in this field because they fulfil the first two requirements. However, no polymeric material can achieve mechanical properties similar to the bone. For that reason, polymeric nanocomposites, which consist of ceramic/metallic nanoparticles dispersed in a polymer matrix, are being considered for bone scaffold fabrication in order to overcome this problem, since nanoparticles are known to improve composite mechanical strength, and enhance other properties.
Electing an All-Party, Proportional, Power-Sharing Coalition, a Government of National Unity  [PDF]
Peter Emerson
Open Journal of Political Science (OJPS) , 2013, DOI: 10.4236/ojps.2013.32009
Abstract:

There are many instances when a group of people might want to choose a committee, a fixed number of individuals to undertake a particular collective function. At their AGM or annual conference, residents in a community group, shareholders of a limited company, members of a trades union, and those of a political party, may all want to elect an executive: one person to be chair, another secretary, a third treasurer, etc. All these posts require different talents and all the individual office bearers undertake necessary but separate functions for the successful operation of that committee. In like manner, a parliament may choose to elect a government of national unity (GNU). The only voting procedure so far devised by which a given electoratethose concerned at an AGM or members of parliament (MPs)may elect, not only those whom they wish to be in cabinet, but also the ministerial posts in which each of those chosen will then serve, is the matrix vote. This paper describes 1) an experiment held at the Political Studies Association of Ireland (PSAI), undergraduate conference in Dublin on 23rd June 2012 inwhich participants, role playing as members of the Irish parliament, elected a GNU; and 2) the matrix vote methodology, such that others may also employ this voting system. An obvious instance would be for the election of an all-party power-sharing executive in a post-conflict zone.

Democratic Rights: Decision-Making by Law Makers and Law Enforcers  [PDF]
Peter Emerson
Beijing Law Review (BLR) , 2013, DOI: 10.4236/blr.2013.42010
Abstract: The court of law is often adversarial; the more usual question, after all, is binary: guilty or not guilty? The parliament which makes the law, however, need not subject complex questions to dichotomous judgements, or a series of dichotomies: indeed, the corresponding debate should consider all relevant options on an equal basis. Accordingly, this article questions the propriety of a majoritarian polity, considers a less adversarial voting procedure, and contemplates a more inclusive political structure, in order then to argue that human rights legislations should be far more specific on the subject of democratic rights. Such a development may depend less upon the politician and more upon the lawyer.
A Democratic China?  [PDF]
Peter Emerson
Open Journal of Political Science (OJPS) , 2014, DOI: 10.4236/ojps.2014.43013
Abstract:
Many are the criticisms of those who feel that the one-party state in China is inadequate, and many are the calls, especially from abroad, for reform. But would a democratic Chinaas per a western interpretationbe an improvement? In tackling this question, this paper concentrates on voting procedures: those used in elections and those (which may or may not be the same) used in decision-making. This article first looks at the USSR, Eastern and Central Europe, and then briefly at Africa. Next, it considers what could go wrong if a standard, western, multi-party democracy was to be adopted in China. And finally, it offers a more inclusive polity.
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