Desenvolvimento de filtros cerâmicos impregnados com nanopartículas de prata para desinfecção de água potável

Brazil has vast amounts of hydric resources, whose quality has been deteriorating due to pollutant dumping. Household waste disposal is one of the main sources of water pollution, stimulating bacteria proliferation and introducing microorganisms, including those from fecal matter. Conventional water disinfection methods are a solution, but on the downside, they lead to the formation byproducts hazardous to human health. In this study, aiming to develop bactericidal filters for the disinfection of drinking water; silver nanoparticles were deposited on alumina foams through three routes: sputtering DC, dip coating and in situ chemical reduction of silver nitrate. The depositions were characterized through X-ray diffraction, scanning electron microscopy and EDS element mapping. The influence of the depositions on permeability and mechanical properties of the ceramic foams was assessed and, in sequence, a preliminary antibacterial efficiency analysis was carried out. Characterization results indicate that the chemical reduction routes were efficient in depositing homogeneously distributed silver particles and that the concentration of the metallic precursor salt affects size and morphology of the particles. The antibacterial efficiency analysis indicates that the chemical reduction filters have potential for water disinfection

Desenvolvimento de bioblendas poliméricas a partir de gelatina bovina e de tilápia com amido de milho

The natural raw materials acquired special importance beside the mineral raw materials with the need for using alternative sources to oil, because they can be used to produce biopolymers. Gelatin, produced from the denaturation of collagen, and starch, an abundant polysaccharide in various plants, are examples of biopolymers which have several technological applications, especially in films. The objective of this work is to produce polymeric bioblends with gelatin and corn starch using two types of gelatin: commercial bovine gelatin and gelatin produced from mechanically separated flesh of tilapia (Oreochromis niloticus). For the extraction of tilapia gelatin 3 distinct pretreatments, followed by extraction in distilled water under heating were performed. The properties of gelatin extracted were similar to bovine gelatin, and the differences can be explained by the difference in extraction processes and sources. Blends of commercial gelatin and starch were produced in an internal mixer from a Haake torque rheometer, to study the behavior of the gelatin mixture with starch, thus, the same compositions were processed by twin screw extrusion, to define the mixing parameters. Subsequently, the extrusion of blends of tilapia gelatin and corn starch was carried out in the same twin screw extruder. The physico-chemical, rheological and morphological properties of the blends with thermoplastic starch and gelatin were studied. It was found that various properties vary linearly with increasing concentration of the components. The blends produced are immiscible, and among the two gelatins, tilapia gelatin showed a better interfacial adhesion with the corn starch. Regarding the morphology, gelatins formed the dispersed phase in all compositions studied, even in compositions rich in starch. Can be concluded that the procedure for tilapia gelatin extraction is feasible and advantageous, and the increasing in its scale to a reactor of 30 liters is possible, with a satisfactory yield. The bioblends of bovine gelatin/corn starch and tilapia gelatin/corn starch were successfully produced, and the processing conditions were appropriate

Desenvolvimento e caracterização de compósito a partir da borra da piaçava para construção da parábola de um fogão solar a concentração

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

De gata borralheira a Cinderela :nova espacialidade decorrente do desenvolvimento turístico, diferenciada pelo estilo de vida em Ponta Negra, Natal, RN

The transformations economical, social and politics in you finish them decades of the century XX brought changes that didn't just limit to the production system. The flexible accumulation took many workers lost her/it their workstations and they look for her/it new survival forms, migrating for administrative activities, of services rendered and for the tourist activity of small and medium load. The State has been investing in the implantation of plans of tourist development in order to create favorable conditions for the reproduction of the tourist activity in Brazil, mainly in the Northeast. A space when it starts to present a predominant economical activity suffers a restructuring in their social and economical relationships. The restructuring of these relationships takes to the construction of a new espacialidade. In the city of Christmas, in Rio Grande do Norte, the neighborhood of Black Tip is the most representative of the public investments for the tourist development. After intense process of tourist urbanization, Black Tip passed interfering in the global context consolidating as the tourist locus in the city. The tourist urbanization of the neighborhood took to the transformation of the space in merchandise that is sold and consumed as such. The recreation of fragments of other cultures brought by social actors, resulting from migratory processes stimulated by the tourist development, it has been presenting ruled social relationships in the informational technology, consumption of global goods and in the fragmentation of the urban space characterized by the internationalization and cosmopolitização. That process has been masking the inequalities partners and cultural as well as the territorial appropriation for an economical elite. The spaces are being appropriate for investors of the tourist section, private investors, agents and real estate producers, where the inequality is not just economical, but also cultural. The local population, mainly of the urban fraction of the Town of Black Tip, it doesn't participate of the productive process in function of the little or any professional qualification and he/she doesn't also have access to the consumption process. To the native ones it remains the fight for the preservation of his/her cultural identity and for the survival

Remoção de ruídos sísmicos utilizando transformada de wavelet 1D e 2D com software em desenvolvimento

In the Hydrocarbon exploration activities, the great enigma is the location of the deposits. Great efforts are undertaken in an attempt to better identify them, locate them and at the same time, enhance cost-effectiveness relationship of extraction of oil. Seismic methods are the most widely used because they are indirect, i.e., probing the subsurface layers without invading them. Seismogram is the representation of the Earth s interior and its structures through a conveniently disposed arrangement of the data obtained by seismic reflection. A major problem in this representation is the intensity and variety of present noise in the seismogram, as the surface bearing noise that contaminates the relevant signals, and may mask the desired information, brought by waves scattered in deeper regions of the geological layers. It was developed a tool to suppress these noises based on wavelet transform 1D and 2D. The Java language program makes the separation of seismic images considering the directions (horizontal, vertical, mixed or local) and bands of wavelengths that form these images, using the Daubechies Wavelets, Auto-resolution and Tensor Product of wavelet bases. Besides, it was developed the option in a single image, using the tensor product of two-dimensional wavelets or one-wavelet tensor product by identities. In the latter case, we have the wavelet decomposition in a two dimensional signal in a single direction. This decomposition has allowed to lengthen a certain direction the two-dimensional Wavelets, correcting the effects of scales by applying Auto-resolutions. In other words, it has been improved the treatment of a seismic image using 1D wavelet and 2D wavelet at different stages of Auto-resolution. It was also implemented improvements in the display of images associated with breakdowns in each Auto-resolution, facilitating the choices of images with the signals of interest for image reconstruction without noise. The program was tested with real data and the results were good

No palco, os quadrinhos: a influência do teatro judaico no desenvolvimento das histórias em quadrinhos modernas

This dissertation has its main goal on signing the modern Comic Books` narrative development aspects. It goes from its relationship with performing arts, specifically with the Yiddish (Jewish theatre). The research was done from the Will Eisner´s work analysis. He is a cartoonist and has a wide and influent in his area. Moreover he clearly reflects the similarities between Comic Books and Theatre. In this study was adopted the qualitative methodology on historic-comparative procedure through bibliography. The study indicates that, although their media and distinct principles, the Comic Books and Yiddish Theatre have close influence relationship considering their narrative solutions

Desenvolvimento de pastas leves utilizando incorporadores de ar para aplicação em poços de petróleo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Influência da profundidade e dos parâmetros ambientais sobre o desenvolvimento de Gracilaria birdiae (Rhodophyta, Gracilariales) em viveiro de camarão

This study evaluates the influence of depth and environmental parameters on the development of Gracilaria birdiae Plastino & Oliveira (Gracilariaceae Rhodophyta) in an organic shrimp pound (Litopenaeus vannamei) under euthrophical conditions. PVC structures (module) witch four ropes laden with 150 g of macroalgae each, were kept during 35 days at three different depths (surface, 10 and 20 cm depth). Wet biomass weighing and environmental parameters (temperature, salinity, turbidity, pH, transparence, precipitation, evaporation, insolation, accumulated solar radiation, nitrite, nitrate, ammonium and orthophosphate) were measured weekly. At all three proposed depths, the macroalgae displayed a higher biomass at the end of experiment than at the initial inoculations. The module kept at a 10 cm depth presented the greatest average biomass (186,3), followed by that kept at 20 cm (180,4 g) and the surface module (169,9 g). Biomass variations showed algae to suffer the direct effects of depths. Biomass loss was associated with the factors that influence light penetration, such as sediment deposits above the thallus, rate of evaporation and precipitation. The smallest loses occurred in the algae kept on surface (0,16%), followed by the algae kept at 20 cm (0,20%) and 10 cm (0,22%). The specific growth rate (SGR) of G. birdiae showed no significant difference between the three depths nor the sample periods. Nevertheless, the modules kept at 10 and 20 cm depths presented similar growth evolution, both growing 0,38%·per day-1, while the module kept on surface had an average SGR of 0,36%·day-1. The models related to growth rate demonstrated temperature, salinity, pH, orthophosphate, ammonium, precipitation and turbidity as the principal environmental parameters influencing the development of G. birdiae

Efeito dos nutrientes (nitrogênio e fósforo) sobre o desenvolvimento da Gracilaria birdiae: crescimento e possível uso como biofiltro

Marine shrimp farming has grown exponentially during the last years in Brazil. In spite of the promising economical situation, this activity is facing an increasing criticism due to its environmental impact. Thus, the necessity of alternatives to mitigate environmental degradation caused by this activity. An alternative that is being studied is the policulture that is the integrated culture of two or more organisms, normally one of them a filtering organism. Among filtering organisms, macroalgae are very practicable because they are efficient in the removal of the exceeding nutrients of the water and do not leave residues in the water. Besides, the integrated culture with macroalgae allows the economical exploration of the seaweed (for the manufacture of jelly and jam, for the dairy industry, pharmaceuticals, etc.) along with possibility of a sustainable aquaculture. In the present experiment, the development of the seaweed Gracilaria birdiae, the influence and tolerance of this species to the environmental parameters, and its absorption efficiency in relation with the three kinds of macronutrients (NH4+, NO3- and PO4-3) found in the effluents of marine shrimp farming was studied. The experiment was divided in two parts: a laboratorial part and one part carried under natural conditions. The water used in the laboratory trial was collected in the shrimp ponds of Tecnarão farm and distributed in aquaria containing 20 g of G. birdiae. In the field trial, 0.5 kg of G. birdiae was inserted in PVC cages cultivated in the farm. The results of the study showed a modest growth of G. birdiae, probably due to its low tolerance to highly eutrophicated environments. However, the removal of nutrients was very expressive. Ammonia was reduced in approximately 34 %. Ortho-phosphate showed a reduction of 93.5 %. The capacity of biofiltration of the NO3- by the macro algae was of 100 %, showing that G. birdiae is a seaweed-filtered with a high level of removal for this nutrient under laboratorial conditions. In spite of the low growth of the macro algae in the experiment, the results in relation to the removal of nutrients of the water was encouraging, suggesting that this species can be an efficient biofilter and thus, a strong candidate to be used in a sustainable aquaculture

O Marketing pessoal e as praticas de procura de emprego: um estudo exploratório com recém-diplomados

Atualmente, o mercado de trabalho é um domínio competitivo e não basta ao candidato a emprego deter qualificação superior. Apesar de uma sociedade assente no conhecimento, ciência e tecnologia, assiste-se a uma desvalorização relativa do diploma a quanto do acesso ao mercado de trabalho. As exigências da competitividade apelam á mobilização de varias competências e condições de empregabilidade, desde as mais técnicas e cientificas(hard skills) até ás mais pessoas e sociais(soft skills). No contexto dda ciência do marketing, os conceitos de marketing pessoal e de marca pessoal, embora apresentando ainda escassa pesquisa cientifica e frágil enquadramento concetual, têm assumido discussão e reconhecimento crescente. O marketing pessoal, associado a uma atitude de proatividade e devidamente sustentado, converte-se numa vantagem competitiva, evidenciando o valor e a diferenciação do individuo no processo de procura de emprego. Realizou-se um estudo exploratório, sob uma abordagem qualificativa, utilizando a entrevista semiestruturada e que se aplicou a uma amostra constituída por 12 diplomados em situação de procura de emprego. Considerando o tipo do estudo, as conclusões obtidas devem ser, necessariamente, contextualizadas á investigação. OS resultados demonstram que os diplomados em causa, ainda que de forma inconsciente e não devidamente estratégica, reconhecem importância ao desenvolvimento do seu marketing pessoal e promoção da sua marca e imagem no contexto das praticas de procura de emprego. Apesar da prudencia e limitação quanto á generalização de resultados, a presente dissertação serve de motivação para uma melhor reflexão sobre o binómio marketing pessoal e a procura de emprego.

“A literatura: um olhar pessoal”

A cultura popular e local é um dos mais fortes pilares da identidade dos territórios e uma das mais potenciais bases para um desenvolvimento sustentável que não elimine, nem desmantele, tudo o que os nossos antepassados construíram em cada um dos territórios. Neste contexto, a literatura popular, em territórios do interior de Portugal, nomeadamente, onde os níveis de iliteracia foram sempre demasiadamente altos, é um dos principais patrimónios a preservar. A recolha, valorização e divulgação da literatura popular de base oral é, nestas condições, um importante contributo para a preservação da identidade local e um fundamental trabalho para a preservação, valorização e divulgação do património nacional.

“A importância do voluntariado na formação pessoal e social dos indivíduos: o caso do Banco Alimentar Contra a Fome de Évora”

Livro que reúne comunicações das V e VI edições dos “Aprender no Alentejo”- Encontros Regionais de Educação, realizados na Universidade de Évora.

Tornar-se doutor: a relação de orientação e o desenvolvimento do/a doutorando/a

Apesar do estudo dos processos educativos no ensino superior ser um tópico bastante explorado pela Psicologia, o estudo do processo de doutoramento parece ter sido relegado para segundo plano ao longo dos anos. O presente estudo procurou analisar a perceção de desenvolvimento de estudantes de doutoramento (em termos de ganhos e perdas) e a relação de orientação (em termos de tipo de relação e qualidade percebida da relação), bem como o impacto dessa relação na perceção de desenvolvimento pessoal. Participaram neste estudo 308 estudantes de doutoramento de três universidades portuguesas. Os principais resultados obtidos parecem indicar que os doutorandos tendem a perceber a qualidade da relação de forma positiva, que estes percebem os orientadores como cooperantes, próximos e respeitadores da autonomia do estudante, e que estes tendem a perceber principalmente ganhos desenvolvimentais. De uma forma geral observou-se também que algumas dimensões do tipo de relação e da qualidade da relação parecem ter uma influência significativa na perceção de ganhos e perdas; On becoming a PhD: The relation of supervision and the development of the doctorate Abstract: Despite the study of educational processes in higher education is a topic extensively explored by Psychology, the study of the doctoral process seems to have been relegated to the background over the years. This study aimed to analyze the perception of development of PhD students (in terms of gains and losses) and the supervision relationship (in terms of type of relationship and perceived quality of the relationship), and the impact of this relationship on the perception of personal development. The sample consisted of 308 doctoral students from three portuguese universities. The main results seem to indicate that doctoral students tend to perceive the quality of the relationship as positive, that they perceive supervisors as cooperant, close and respectful for students’ autonomy, and that they tend to perceive mainly developmental gains. In general, it is also noted that some dimensions of the type of relationship and the relationship would appear to have a significant influence on the perception of gains and losses.

Desenvolvimento de um plano de ação para o acompanhamento de hipertensos usuários do Sistema Único de Saúde na Estratégia de Saúde da Família no município de Paulista em Minas Gerais

A Hipertensão arterial é uma doença cardiovascular que vem atingindo grande parte da população mundial e atualmente é considerada como um dos principais problemas de saúde no Brasil. Além de causar complicações cardíacas, contribui para a insuficiência renal. A escolha deste tema se deu pela necessidade de um acompanhamento a partir de ações práticas e objetivas para diminuir o risco de vida das pessoas que sofrem da Hipertensão. O objetivo deste trabalho foi realizar uma intervenção por meio de um plano de ação com a equipe de Saúde da Família na busca de amenização deste problema no município de Paulistas. A metodologia constou de duas etapas, sendo revisão bibliográfica e a elaboração de um Plano de Ação envolvendo agentes da saúde: (médicos, enfermeiros, técnicos, nutricionistas, fisioterapeuta, psicólogos e especialmente grupos de hipertensos, etc.), bem como Palestras, cartilhas educativas, implantação de linha guia. Espera-se que a partir do Plano de Ação proposto os problemas que vêm afetando a população hipertensa e preocupando a equipe do PSF- Paulistas -MG sejam amenizados e que as condições para o acompanhamento seja melhorada, facilitando assim a condição do trabalho da equipe no combate ao problema que denominamos Hipertensão e melhorando a qualidade de vida da população atendida.

Characterization Of Cumulative Joint Damage Patterns In Patients With Rheumatoid Arthritis: A Clinical, Serological, And Gene Polymorphism Perspective.

To characterize cumulative joint damage (CJD) patterns in rheumatoid arthritis (RA) and determine their associations with demographic/clinical features and HLA-DRB1 gene polymorphism. Hand and foot radiographs were obtained from 404 patients with RA. CJD patterns were determined by 3 derivations from Sharp/van der Heijde scores, obtained by the mathematical division of scores for hands/feet (Sharp-h/f score), fingers/wrists (Sharp-f/w score), and erosion/space narrowing (Sharp-e/sn score), respectively. DNA and serum were obtained for determination of HLA-DRB1 polymorphism, rheumatoid factor (RF), and anticitrullinated protein antibodies (ACPA). Patients with wrist-dominant CJD pattern were more likely to have severe RA than those with finger-dominant pattern (68.4% vs 46.0%; p = 0.036) as were those with foot-dominant vs hand-dominant CJD pattern (76.5% vs 56.4%; p = 0.044). HLA-DRB1 shared epitope (SE) alleles were associated with erosion-dominant CJD pattern (p = 0.021). Patients with erosion-dominant CJD pattern had higher levels of RF and ACPA than those with space-narrowing-dominant CJD pattern (median RF 71.35 U/ml vs 22.05 U/ml, respectively; p = 0.003; median ACPA 187.9 U/ml vs 143.2 U/ml, respectively; p < 0.001). The majority of triple-positive patients (SE+, RF+, ACPA+) had erosion-dominant CJD pattern (62.3%) while the majority of triple-negative patients (SE-, FR-, ACPA-) had space narrowing-dominant CJD pattern (75%; p = 0.017). ACPA was associated with HLA-DRB1 SE alleles (p < 0.05). Patients with foot-dominant CJD pattern were taller than those with hand-dominant CJD pattern (p = 0.002); those with erosion-dominant CJD pattern had higher weight and body mass index than those with space narrowing-dominant CJD pattern (p = 0.014, p = 0.001). CJD patterns were associated with disease severity, HLA-DRB1 SE status, presence and titer of ACPA and RF, and morphometric features.