966 resultados para magnifying glasses


Relevância:

10.00% 10.00%

Publicador:

Resumo:

The purpose of this degree project is to come up with a new package to Renat Brännvin for »Vin & SpritAB« and make the product more attractive on the market of bars, restaurants and hotels. The commissionhas included to decide the material of the package, whether it´s possible to manufacture the productand to make an estimation of the costs.The conditions that »Vin & Sprit AB« set up was to make the product attractive to a younger targetgroup, in this case people from 20 to 40 years old. As Renat Brännvin is considered to be a product of firstclass it´s of great importance that the package reflects the look of a premium product.At first we looked at the history of the company »Vin & Sprit AB« and Renat Brännvin. We decidedthat the package schould consist of a bottle, glasses and a device used when serving the liquor. To getinspiration before sketching we studied different kinds of bottles, glasses and serving devices. We madea lot of different sketches to start with after which we consult with Ingrid Florén – our supervisor from»Vin & Sprit AB« – agreed on one. That one we developed and we made more accurate sketches in 3DStudioMAX.At last we looked at the opportunities to produce the bottle by questioning different manufacturers. Wewanted to know the limitations to consider when making a bottle.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

O presente trabalho tenta mostrar a importância da aplicação de novas tecnologias no mundo globalizado, especialmente a rede Internet, como ferramenta indispensável na melhoria da qualidade da divulgação dos estudos produzidos pelo Instituto Brasileiro de Geografia e Estatística - IBGE, pela Coordenação de Comunicação Social do órgão. A pesquisa valeu-se de documentos administrativos, tais como Decretos, Resoluções, Portarias, Boletins de Serviço, entre outros materiais disponíveis que pudessem auxiliar nessa memória institucional. Utilizou como embasamento teórico a literatura especializada e para a pesquisa qualitativa aplicou a metodologia pertinente à pesquisa com coleta de dados da História Oral. Com o propósito de resgatar e percorrer o caminho histórico da criação do site do IBGE na Internet e a ampliação de seu uso por localidades do Brasil, esta pesquisa priorizou a importância que a Internet teve para a divulgação e disseminação dos trabalhos produzidos pelo IBGE. Para poder analisar esse processo foi preciso recorrer a alguns conceitos capazes de ajudar na reflexão sobre as transformações em curso, tais como: inovação tecnológica, cultura comunicacional, globalização, identidade global, identidade nacional, entre outros.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

This article objectified to identify the main challenges to the implementation of the system of management of the water features established by Law 9.433/97, in special the restrictive factors to the installation of Committees of Basin and Hidric Resources Agencies and the challenges to the implementation and management of the basin plans, of the charge and the grant for the hydric resources uses. The analysis is based in the South Paraiba river case, beyond the experience in other countries. The reflections on the gotten information had led to the conclusion of that the magnifying and change of the institucional base of decision, the integration of the entities of water features, the institucional qualification and technique, the social mobilization, the decentralization of the financial features, the integration of the management in frontier basins and the implementation of management systems based in the consensus are the biggest challenges to the execulte of the federal law.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

O presente estudo tem como proposta, identificar o modo como o mineral monazita se encontra no concentrado final de ilmenita. Este concentrado é o produto resultante do beneficiamento do minério extraído de depósitos do tipo pláceres, conhecidos como depósitos de areias pretas. Estes depósitos são formados por dunas litorâneas pertencentes à jazida do Guaju, no município de Mataraca-PB. Todo o processo de lavra e beneficiamento deste minério ocorre na Mina do Guaju, a qual é operada pela empresa Millennium Inorganic Chemicals do Brasil S/A, pertencente a Lyondell Chemical Company. A ilmenita é um mineral composto por óxido de ferro e titânio, FeTiO3. Quase toda a ilmenita produzida na mina é transferida para o processo de fabricação de pigmento. A exigência para o uso na fabricação de pigmento é de que o concentrado final de ilmenita tenha um teor mínimo de 53% de TiO2 e um teor máximo de 0,1% de P2O5, entre outras substâncias. A monazita é o principal mineral fonte de óxido de tório, que é radioativo. No processo de fabricação de pigmento, a monazita é um contaminante indesejado. De acordo com a proposta de trabalho, foi feito um estudo de caracterização mineralógica de amostras do concentrado final de ilmenita fornecidas pela empresa. Inicialmente foram feitas análises em lupa, onde muitos grãos de leucoxeno foram identificados. O leucoxeno é uma alteração da ilmenita que permanece com as mesmas características magnéticas e eletrostáticas, tornando impossível, assim, a sua separação no processo de concentração. Também foi verificada a existência de grãos de monazita liberados em pequenas quantidades neste concentrado, indicando uma provável ineficiência no processo de separação. Numa segunda etapa foram realizadas análises dos grãos de ilmenita com o uso de um Microscópio Eletrônico de Varredura (MEV) acoplado a um Espectrômetro de Dispersão de Energia (EDS), para permitir a determinação de elementos químicos na amostra. Esta análise teve como objetivo verificar a existência de inclusões de monazita nos grãos de ilmenita. Porém, o que se observou foi a existência de algumas inclusões de quartzo e de alguns vazios deixados, provavelmente, por inclusões arrancadas durante o processo de preparação das amostras. Alguns destes vazios apresentaram formas semelhantes a de cristais de monazita, indicando a possibilidade da existência de inclusões deste mineral. Entretanto, a quantidade de grãos com possíveis inclusões de monazita é muito pequena, sendo insignificante como contaminante do concentrado final. Embora alguns vazios se assemelhem à forma da monazita, nenhum dos resultados do EDS identificou vestígios de sua presença. Ao final deste estudo ficou evidente que a principal fonte de contaminação do concentrado final de ilmenita corresponde à monazita, a qual se encontra liberada neste concentrado. Desta forma, há a necessidade de se melhorar o processo de separação dos minerais, de modo que a quantidade de monazita no concentrado final seja a menor possível, não prejudicando o rendimento da recuperação de ilmenita.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The system in-Ceram Alumina, produced by VITA, consists in a technique of prepare of a substructure of ceramics to dental crowns. First burning is made in the alumina decanted by slip casting process under a stone die that reproduces the tooth prepared to receive a crown. In a second burning, alumina is infiltrated by vitreous system, giving to this set a high mechanic resistance. In this work, it s made a study of the composition of a new infiltrating material more used nowadays, giving to alumina desirable mechanics proprieties to its using like substructure of support to ceramic s crown used in the market today. The addition of Lanthanum oxide (frit A) and calcium oxide (frit B) was made in attempt to increase the viscosity of LZSA and to reduce fusion temperature. The frits were put over samples of alumina and took to the tubular oven to 1400ºC under vacuum for two groups (groups 1 and 2). For another two groups (groups 3 and 4) it was made a second infiltration, following the same parameters of the first. A fifth group was utilized like group of control where the samples of pure alumina were not submitted to any infiltrating process. Glasses manifested efficient both in quality and results of analysis of mechanic resistance, being perfectly compatible with oral environment in this technical requisite. The groups that made a second infiltration had he best results of fracture toughness, qualify the use in the oral cavity in this technical question. The average of results achieved for mechanic resistance to groups 1, 2, 3, 4 and 5 were respectively 98 MPa, 90 MPa, 144 MPa, 236 MPa and 23 MPa

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The technique of surface coating using magnetron sputtering is one of the most widely used in the surface engineering, for its versatility in obtaining different films as well as in the micro / nanometric thickness control. Among the various process parameters, those related to the active species of the plasma are of the most fundamental importance in the mechanism and kinetics of deposition. In order to identify the active species of the plasma, parameters such as gas flow, pressure and density of electric power were varied during titanium coating on glass substrate. By flowing argon gas of 10, 20, 30, 40 and 50 sccm (cubic centimeters per minute) for each gas flow a sequential scan of the electric current of 0.10, 0.20, 0.30, 0.40 , 0.50 A. The maximum value of 0.50 A was chosen based both on literature data and on limitations of the equipment. The monitoring of plasma species present during the deposition was carried out in situ by the technique of optical emission spectroscopy (OES) through the spectrometer Ocean Optics USB2000 Series. For this purpose, an apparatus was developed to adapt the OES inside the plasma reactor to stay positioned closest to the target. The radiations emitted by the species were detected by an optical fiber placed behind the glass substrate and their intensities as a function of wavelength were, displayed on a monitor screen. The acquisition time for each condition of the plain parameters was related to the minima of spectral lines intensities due to the film formed on the substrate. The intensities of different emission lines of argon and titanium were then analyzed as a function of time, to determine the active species and estimate the thickness of the deposited films. After the deposition, the coated glasses thin films were characterized by optical transmittance through an infrared laser. It was found that the thickness and deposition rate determined by in situ analysis were consistent with the results obtained by laser transmittance

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

This study approaches the question of the administrative procedure of the environmental licensing of ranks of fuel resale, taking as basis a study case of the reality of the City of Natal/RN (Brazil). For in such a way, it was done a retrospect on the evolution of the system of road transport in Brazil, having started to briefly analyze the urbanization process that if after accented in the capitals of the Brazilian States the decade of 1950, relating these subjects with the growth of the sector of fuel resale. After that, it was transferred boarding of the defense of the national environment to the light of ambient principles constitutional. In the sequence, a boarding on the ambient guardianship in the Federal Constitution of 1988 was made, treating basically specifies and on the national urban politics and the national politics of the environment, with its instruments. In the sequence, it was transferred the analysis of the abilities and attributions of the National Advice of the Environment (CONAMA) and its Resolutions, for then only enter in the most important part of this work: an analysis of the environmental licensing of ranks of fuel resale, in the reality of the City of Natal/RN. Before this specific boarding, it was proceeded specifically a survey and communication from the applicable norms to such establishments (Resolutions of the CONAMA and norms of the ABNT), for after that carrying through an geo-ambient characterization of the City of Natal/RN. Finally, a reflection was made on the possibility of magnifying of the state activity, in terms of guarantees for the responsible members for the environmental policy and of administrative efficiency, through the idea of the ambient regulation. For the accomplishment of this study, it was proceeded research in diverse sources such as books, magazines, sites of the Internet, periodicals, thesis and dissertations, among others material, beyond visits the agencies that direct or indirectly act with the ambient defense and as fuel resale, such as Secretariat of Environment and Urbanism of the City of Natal (SEMURB), Institute of Economic Development and Environment of RN (IDEMA), Brazilian Institute of the Environment and the Natural resources You renewed, Executive Management of RN (IBAMA/RN), Public prosecutor's office of the Environment of Natal (Public prosecution service of the RN), National Agency of Oil (ANP) and Union of the Retailing of Derivatives of Oil of the RN, among others. To the end, satiated regulation is observed that although on the substance of the ambient licensing in ranks of fuel resale, also with federal, state and municipal norms, the municipal Public Power is very far from the fulfilment of its institutional functions, in the question environmental policy of these establishments, a time that few are the permitted ranks of resale in the city of Natal/RN

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Investigaram-se as diferenças morfológicas da siringe do periquito Touist sp, cinco machos e cinco fêmeas. A traquéia e a siringe foram dissecadas com o auxílio de uma lupa estereoscópia e avaliaram-se o número de anéis, o comprimento da traquéia e da siringe e o comprimento e espessura do músculo traqueolateral. A traquéia do macho apresentou maior número de anéis e maior comprimento que a das fêmeas. O músculo traqueolateral dos machos é mais vigoroso e origina-se no 43º anel traqueal enquanto o das fêmeas origina-se no 30º anel traqueal e se insere no primeiro anel bronquial. A siringe do piriquito é constituída por anéis craniais, cinco nos machos e três nas fêmeas, anéis intermediários, com formato semelhante a uma bolha sulcada ventralmente, anéis caudais, quatro em ambos os sexos, e pessulo. O dimorfismo sexual está presente na morfometria da musculatura e das cartilagens, o que reflete no canto mais vigoroso dos machos.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

In order for this study to be developed, the central goal on our investigation was defined as analyzing and interpreting the aesthetical experiences meanings lived by singers-educators in the human formation. The interest for the aesthetical experience theme was built from my own experience for the last twelve years as a member of the School of Music Madrigal, the oldest group in the State Federal University, created for research and cultural extension with structural perspective which brings closer teachers, students and the outer community that comes from different social realities to face the challenge of combining the ability of singing, the corporeity involvement and the aesthetical experiences meanings. This paper points out the understanding of art as perceptive expression of human emotions, such as the creation of existential demand, the restructuring of oneself and the constructions which shape beauty. We seek a dense contribution of new challenges to the peculiar demand of human potential in terms of sensibility repertoire, of involvement, of expectation in magnifying the possibilities and the human and social competences. In the formation human process, we find a living field blooming with natural artistical possibilities, experimenting emotions and feelings shared in collective life, and bringing out impulses to unexpected ludic creation, establishing a powerful aesthetical ambience which highlights the symbolic and imaginary with the deepening of rich ludopoiese properties in several meanings. From the guiding principles of etnophenomenology we find structural and indispensable perspectives which contemplate values, desires, archtype images and ideas that impress originality and fertility to the study. On this path we understand the abundance of living moments of intense commitment, acquaintance, challenges, reunions and connections that stand out from fundamental aspects to freedom, autonomy, creativity and new discontinuities. This acknowledgement brings us closer to the enlighted fullness which makes us humans

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The present work had as objective to apply an experimental planning aiming at to improve the efficiency of separation of a new type of mixer-settler applied to treat waste water contaminated with oil. An unity in scale of laboratory, was installed in the Post-graduation Program of Chemical Engineering of UFRN. It was constructed in partnership with Petrobras S.A. This called device Misturador-Decantador a Inversão de Fases (MDIF) , possess features of conventional mixer-settler and spray column type. The equipment is composed of three main parts: mixing chamber; chamber of decantation and chamber of separation. The efficiency of separation is evaluated analyzing the oil concentrations in water in the feed and the output of the device. For the analysis one used the gravimetric method of oil and greases analysis (TOG). The system in study is a water of formation emulsified with oil. The used extractant is a mixture of Turpentine spirit hydro-carbons, supplied for Petrobras. It was applied, for otimization of the efficiency of separation of the equipment, an experimental planning of the composite central type, having as factorial portion fractionary factorial planning 2 5-2, with the magnifying of the type star and five replications in the central point. In this work, the following independents variables were studied: contents of oil in the feed of the device; volumetric ratio (O/A); total flowrate ; agitation in the mixing chamber and height of the organic bed. Minimum and maximum limits for the studied variables had been fixed according previous works. The analysis of variance for the equation of the empirical model, revealed statistically significant and useful results for predictions ends. The variance analysis also presented the distribution of the error as a normal distribution and was observed that as the dispersions do not depend on the levels of the factors, the independence assumption can be verified. The variation around the average is explained by 98.98%, or either, equal to the maximum value, being the smoothing of the model in relation to the experimental points of 0,98981. The results present a strong interaction between the variable oil contents in the feed and agitation in the mixing chamber, having great and positive influence in the separation efficiency. Another variable that presented a great positive influence was the height of the organic bed. The best results of separation efficiency had been obtained for high flowrates when associates the high oil concentrations and high agitation. The results of the present work had shown excellent agreement with the results carried out through previous works with the mixer-settler of phase inversion

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

In this work, differential scanning calorimetry (DSC) was used to study the mechanism of crystallization of 5OP(2)O(5-)27.8Na(2)O-16ZnO-6.2Al(2)O(3) glass. DSC measurements were performed on bulk and powdered glasses with different particle size. The curve for bulk glass shows one crystallization peak while powdered glasses presented two distinct crystallization peaks. Based on DSC studies, the activation energies obtained were 336 +/- 6 and 213 +/- 3 U mol(-1), associated with first and second crystallization peaks, respectively. Analyzing the DSC parameters as a function of particle size, the Avrami n parameter suggests that the peak at low temperature may be associated with surface crystallization while the peak at high temperature is associated with bulk crystallization. (C) 2002 Elsevier B.V. Ltd. All rights reserved.