Desenvolvimento de argamassa para restauração utilizando resíduo do polimento do porcelanato

The coatings mortars are essential elements of building structures because they execute an important role in protecting walls and are particularly exposed to aggressive action responsible for its degradation over time. The importance of wall coverings has been the subject of discussion and analysis in the conservation and rehabilitation of old buildings. Are sometimes removed and replaced with inappropriate solutions of constructive point of view or architecture. The most commonly used coatings on walls of old buildings is based on traditional hydraulic lime mortars. The present study aims at the formulation of new lime- based mortars and aerial fine aggregate, in order to contribute to a better field of conservation and restoration mortar coating of old buildings. Residue was used for polishing porcelain as fine aggregate, replacing the aggregate (sand), in percentages 05-30% by mass. We conducted a thorough evaluation of the mortar properties in fresh and hardened state by comparing the performance of the same with a reference mortar. The residue used was characterized as the density, bulk density, and particle size laser, scanning electron microscopy, X-ray diffraction and X-ray fluorescence. Formulations were produced 7, 6 with residue and one commonly used formulation, which served as a reference. In the formulations of lime mortars air (hydrated lime powder CH-I) has been adopted a stroke volume (1:3) with constant binder, was varied and the water / binder and aggregate and waste. For evaluation of mortars fresh, proceeded to consistency analysis, specific gravity, water retention and air content embedded. In the hardened state assays were performed in specific gravity, water retention, modulus of elasticity, tensile strength in bending, compressive strength, water absorption by capillary action, adhesion, tensile strength, resistance to shrinkage and salts by of crystallization trials with resources chloride solution, nitrate and sulfate all sodium in prismatic at 90 days of age, in addition to the micro structural analysis of mortars. Based on the results we can see that the mortar formulated with 10% content of waste and the reference free retraction feature more stable closer to neutrality. The composition of 10% was obtained better performance against the action of the salt crystallization. The mortar with 15% residue obtained better density, lower air content embedded and high capacity for water retention developing good workability. The replacement of 20% of waste generates a satisfactory utilization of resistance to compression, flexion and traction grip the base. And, finally, it can be seen that the mortar with 10, 15 and 20% residual show, in principle, good suitability as coatings, thus enabling a final result consistent with durability, workability and aesthetics developing therefore a material with better performance to repair or replace existing mortars in old buildings

Estimação e compensação de não linearidades inerentes aos atuadores dos processos industriais

The oscillations presents in control loops can cause damages in petrochemical industry. Canceling, or even preventing such oscillations, would save up to large amount of dollars. Studies have identified that one of the causes of these oscillations are the nonlinearities present on industrial process actuators. This study has the objective to develop a methodology for removal of the harmful effects of nonlinearities. Will be proposed an parameter estimation method to Hammerstein model, whose nonlinearity is represented by dead-zone or backlash. The estimated parameters will be used to construct inverse models of compensation. A simulated level system was used as a test platform. The valve that controls inflow has a nonlinearity. Results and describing function analysis show an improvement on system response

Contribuição ao desenvolvimento de ontologias para processos petroquímicos : estudo de caso em uma planta DEA

In the last decades, the oil, gas and petrochemical industries have registered a series of huge accidents. Influenced by this context, companies have felt the necessity of engaging themselves in processes to protect the external environment, which can be understood as an ecological concern. In the particular case of the nuclear industry, sustainable education and training, which depend too much on the quality and applicability of the knowledge base, have been considered key points on the safely application of this energy source. As a consequence, this research was motivated by the use of the ontology concept as a tool to improve the knowledge management in a refinery, through the representation of a fuel gas sweetening plant, mixing many pieces of information associated with its normal operation mode. In terms of methodology, this research can be classified as an applied and descriptive research, where many pieces of information were analysed, classified and interpreted to create the ontology of a real plant. The DEA plant modeling was performed according to its process flow diagram, piping and instrumentation diagrams, descriptive documents of its normal operation mode, and the list of all the alarms associated to the instruments, which were complemented by a non-structured interview with a specialist in that plant operation. The ontology was verified by comparing its descriptive diagrams with the original plant documents and discussing with other members of the researchers group. All the concepts applied in this research can be expanded to represent other plants in the same refinery or even in other kind of industry. An ontology can be considered a knowledge base that, because of its formal representation nature, can be applied as one of the elements to develop tools to navigate through the plant, simulate its behavior, diagnose faults, among other possibilities

Sistema inteligente para apoio à decisão na operação de uma malha de escoamento de petróleo

The petroleum production pipeline networks are inherently complex, usually decentralized systems. Strict operational constraints are applied in order to prevent serious problems like environmental disasters or production losses. This paper describes an intelligent system to support decisions in the operation of these networks, proposing a staggering for the pumps of transfer stations that compose them. The intelligent system is formed by blocks which interconnect to process the information and generate the suggestions to the operator. The main block of the system uses fuzzy logic to provide a control based on rules, which incorporate knowledge from experts. Tests performed in the simulation environment provided good results, indicating the applicability of the system in a real oil production environment. The use of the stagger proposed by the system allows a prioritization of the transfer in the network and a flow programming

Ecologia alimentar de aves insetívoras de um fragmento de mata decídua do extremo norte da Mata Atlântica

The diet study of birds has contributed historically as a model for use to understanding ecological patterns and strategies used by several other groups of vertebrates, which are observed in season patterns and temporal availability of resources, and other. This study has as objective generate information concerning the diet of insectivorous birds during rainy season and dry season, as well as analyze Index food importance, niche overlap, niche breadth, electivity, and seasonal availability of prey. The study was conducted in a fragment of about 270 ha (center coordinates and 5 º 53'S 35 ° 23'W). The sampling of birds occurred between March 2008 and December 2009 in three pre-established trails. Catches of birds were performed using 10 mist nets placed in line, where each trails was sampled once a month. Samples of pellets were obtained by means of tartar emetic. Sampling of availability of prey occurred between February 2009 to December 2009. We used two methods of sampling (pitfall traps and Shake cloths). We captured 269 individuals of 21 species of insectivorous birds. We collected 4116 invertebrates of which 3259 in the rainy season and 857 in the dry season. We obtained 174 samples stomach, where 10 species were exclusively insectivorous diet, nine fed on insect/plant material, an insect/plant material/vertebrate and one for insect/vertebrate. During the rainy season was observing difference between the consumption of items with higher food importance. The Coleoptera was item with higher food importance (73%), followed by Formicidae (7%) and Araneae (6%). During the dry season, no difference was found difference between the consumption of items with higher food importance. The Coleoptera was item with higher food importance (34%), followed by seeds (29%) and Formicidae (18%). The highest levels of niche overlap occurred during the rainy season, while the dry season was characterized by high levels of niche 11 segregation. This indicates that the local insectivorous birds community was structured differently between periods. No was found correlation between the values of niche breadth to the mean weight of the body size. We observed seasonal patterns in prey availability, with the peak availability of invertebrates observed seasonal patterns in rainy season. The insectivorous birds selected the same species richness during both periods, showing a specialized diet. Thamnophilus pelzelni was the only species that had their diet influenced by seasonality. Regarding the overall diet of insectivorous birds, observed a high consumption of prey, whose food availability caused the birds could invest and increase their food resources

Ecologia trófica em uma taxocenose de anfíbios: estrutura, filogenia e especialização individual

Historically, ever since the pre-Darwinian naturalists interspecific competition was considered the main force responsible for structuring ecological communities. This interpretation lost strength in the late 70s and throughout the 80s giving room for other views, which consider other factors such as predation, parasitism and the phylogenetic inertia more important. Studies on changes in the trophic niche of a species are still uncommon in general and especially in amphibians. Species considered generalist might actually be a group of individual specialists, or individuals that specialize in a particular category of prey during a period of scarcity of resources, thus reducing intraspecific competition. This work studied the community structure of litter amphibians and trophic variation along the dry and rainy seasons in a population of Leptodactylus macrosternum. Sixteen-litter frog species were studied for their diet. Two central assumptions were tested: 1a) if the community is structured in the niche trophic level, and 1b) if there is a significant difference in the use of food resources by different species (i.e. if the community is structured), the observed structure is the result of ecological interactions or just the current phylogenetic inertia of species. Finally, 2) if there is variation in food resource use between seasons for L. macrosternum. The community showed a structure with respect to the use of food resources, and this structure persisted after taking into account the phylogenetic relationships among species. The diet of Leptodactylus macrosternum varied with the seasons, with a significant degree of individual specialization for the dry season. Patterns of a local community are important to understand its dynamics, and this may play a role in larger- scale processes. Therefore, the studies in community ecology are fundamental to understand and eventually restoring degraded areas

Situações de Risco, Trabalho e Saúde de Imigrantes Brasileiros: representações sociais

This study searches in approaching diverse pertinent aspects to the immigration process that affects the countries of the European Union especially in Portugal. The works deriving from this research has its objective in: analyzing the risk, work and health in Brazilian immigrants residing in Lisbon, Portugal. As methodological way, we use the instruments: Test of Free Association of Words and half-structuralized interview. For in such a way, they had been processed in software s for analysis between them: SPSS 14,5, Evoc, Trideux and Alceste. The not-boarded results in this study will be worked as clippings and will be sent for posterior publication. Thus, I consider this work enriching, in view of contributing of the same as mechanisms of understanding of being a immigrant and the possibility of the mobilization of the society and the academic environment for a phenomenon growing each time more, especially, the professionals of health, so we can intervine in a more necessary form within the factors that affects this population layer directly

Terapia ocupacional em ação interdisciplinar: jogos educativo-nutricionais na prevenção da obesidade infantil

The inter-subjectivity is the answer in the search for the solution of complex problems, which concerns interfaces of knowledge, respecting their borders. This paradigm is essential in the author's work. So, the search on screen is based on this perspective, by using inter-subject groups of work conduced by professionals of Computer Science, Social Communication, Architecture and Urbanism, Pedagogy, Psicopegagogy, Nutritional Science, Endocrinology, Occupational Therapy and Nursing, it was also part of this group an 8 year old child, daughter of one of the professional who took part of the group. This thesis aims to present the course of investigation developed, analyzing the action of inter-subject Occupational Therapy and Nutrition on the promotion of learning nutritional concepts through educative-nutritional games in order to prevent child's obesity in an educative context. The research was analytic, interventionist and almost experimental. It took place in a public school in Fortaleza, Ceará, Brazil, between August and December 2004. It was selected a sample non-probabilistic, by convenience, of 200 children, born from 1994 to 1996. It was selected almost nonprobabilistically, by convenience, 200 children born between 1994 and 1996. To analyze the results it was used a triangulation, associated by quantitative and qualitative approaches. The basis collect happened through games specially manufactured to these research- video-games, board games, memory games, puzzles, scramble, searching words and iterative basics. There were semi-structured interviews, direct and structured observations and focus in-groups. It was noticed the efficiency of educativenutritional games in the learning process, which lead to a changing of attitude towards the eating choices. These games gave similar results in relation to the compared variations preferences, experience and attitudes, theses attitudes were observed through the game; and the categories to compare the possibility of learning by playing, the fantasy in the learning process, learning concepts of nutritional education and the need of help in the learning process (mediation). It was proved that educativenutritional games could be used to teach nutritional concepts, in an inter-subjective action of Occupational Therapy and Nutrition in schools. The simultaneous application of these games lead to the optimization of child s learning process. It should be emphasized the need of studies about the adaptation of tools used in a child s Nutritional Education, with the help of inter-subjective action. Because just one subject, in a fractionated way can give an answer to complex problems and help to a change of the reality with effectiveness and resolution

Síndrome metabólica e risco cardiovascular na pós- menopausa: avaliação por diferentes critérios diagnósticos e influência de fatores sócio-econômicos

The metabolic syndrome (MetS) involves a group of risk factors and is associated with a significantly higher risk of developing cardiovascular diseases (CVD) and type 2 diabetes. Recent studies have shown the importance of preventing CVD through early diagnosis and treatment of patients with MetS. The objective of our study was to determine the prevalence of MetS by different diagnostic criteria in postmenopausal women and analyze the influence of socioeconomic factors on cardiovascular risk in this sample of the population. A cross-sectional study involving 127 postmenopausal women (45 to 64 years) from Natal and Mossoró, Brazil. The study was approved by the Research Ethics Committee of the Federal University of Rio Grande do Norte. The experimental protocol consisted of applying structured interview, clinical examination and implementation of dosages blood. The diagnosis of MetS was based on NCEP-ATP III (National Cholesterol Education Program-Adult Treatment Panel III) and IDF (International Diabetes Federation) criteria. The research was accomplished with the participation of an interdisciplinary team in their several phases. The result of the sample studied had mean age of 53.9 ± 4.6 years and per capita income of 54.5 dollars. The prevalence of MetS, according to NCEP-ATP III and IDF criteria, was 52.8% and 61.4$, respectively. The agreement rate between NCEP-ATP III and IDF criteria was 81.9%, with a kappa value of 0.63 (CI 95%, 0.49-0.76), indicating good agreement between the two definitions. The most prevalent cardiovascular risk factor was HDL < 50 mg/dl, observed in 96.1% of the women analyzed, followed by increased waist circumference (≥ 80 cm) in 78.0%, elevated blood pressure in 51.2%, triglycerides ≥ 150 mg/dl in 40.9% and glycemia ≥ 100 mg/dl in 37.0% of the women. The occurrence of MetS was significantly associated with schooling and body mass index (BMI). High blood pressure was significantly associated with low family income, low schooling and weight gain. There was no significant association between the intensity of climacteric symptomatology and the occurrence of MetS. The conclusions of the research were that MetS and its individual components show a high prevalence in postmenopausal Brazilian women, and significant associations with weight gain and low socioeconomic indicators. The data point to the need for an interdisciplinary approach at the basic health care level, directed toward the early identification of risk factors and the promotion of cardiovascular health of climacteric women.

Risco ocupacional no contexto hospitalar

O presente estudo tem como objetivo conhecer as representações sociais sobre o risco ocupacional construídas por trabalhadores da saúde no contexto hospitalar. Trata-se de um estudo exploratório fundamentado no referencial teórico da Teoria das Representações Sociais realizado com duzentos e vinte trabalhadores da saúde pertencentes ao quadro permanente de um hospital público na cidade do Natal- RN. Os dados foram coletados através da Entrevista semi-estruturada e da Técnica da Associação Livre de Palavras. Na análise das informações utilizou-se o software Evoc 2000 e o Alceste. Os resultados indicam condições de trabalho desfavoráveis com desgaste físico e mental ao trabalhador da saúde, e, patologias pouco reconhecidas como ocupacionais em sua origem. Pode-se observar que as representações sociais construídas pelos trabalhadores da saúde, revelam o nível de conscientização desses trabalhadores referentes às consequências do ambiente de trabalho para sua saúde, referindo-se ao processo de trabalho hospitalar, como múltiplo e complexo pela dimensão tecnológica e pelos aspectos físicos, psíquicos e cognitivos

Risco de contagio pela HIV e as medidas de biossegurança: Significados atribuídos no kcontexto da formação do profisional de saúde

Estudo com abordagem qualititativa, teve como objetivo geral, analisar as representações sociais sobre o risco de contágio do HIV construídas por estudantes universitários portugueses da área de saúde, apontando-se aspectos psicossociais à adoção das medidas de biossegurança. A coleta de dados foi realizada no período de fevereiro a junho de 2007, com a participação total de 486 estudantes da área de saúde de instituições de ensino superior, em Lisboa (Portugal), distribuídos em 248 de Medicina, 168 de Enfermagem e 70 de Medicina Dentária. Os estudantes concordaram em participar da primeira etapa da coleta de dados, constituída por um Teste de Associação Livre de Palavras com seis temas indutores de respostas e um questionário. Na segunda etapa, caracterizada por uma entrevista semi-estruturada , participaram 60 estudantes, sendo 20 de Medicina, 24 de Enfermagem e 16 de Medicina Dentária. Os dados coletados foram processados pelos sofwares SPAD-T e ALCESTE e discutidos com suporte teórico da Teoria das Representações Sociais. Os resultados revelam representações sociais atribuídas ao HIV e aids através das palavras: vírus, incurável, medo, toxicodependencia, discriminação, sofrimento e morte. Ao pensar no cuidado para o paciente, os estudantes assinala para um fazer com dificuldade e inexperiência, que gera nervosismo e medo. Em relação ao risco de contágio do HIV, os participantes associam a proteção, medo e sangue, atribuíndo sentidos as medidas de biossegurança pela proteção com luvas e preservativo, influenciado principalmente por ser uma doença incurável e que causa sofrimento e discriminação. As conclusões revelam que as representações sociais atribuídas a aids e ao risco de contágio do HIV fortalece a proteção e o cuidado para uso de medidas de biossegurança. A compreensão desses significados no processo ensino-aprendizagem devem ser assumidos como instrumento norteador para a formação do profissional da saúde pelas instituições responsáveis

HIV/AIDS e estilo de vida: parâmetros imunológicos, virológicos, síndrome lipodistrófica e sua relação com a prática de exercícios

This descriptive study aimed to investigate the relationship between expression of immunological (TCD4 +) and virological (viral load) parameters, lipodystrophy syndrome and lifestyle variables of people living with HIV who underwent a program of physicalexercise. Initially, the sample was composed by 17 persons, recorded at the Department of Giselda Trigueiro Hospital Care (GTH), Natal-RN . With the passing of the stages of intervention (physical training program- PTP) the number of participants has changed (17, 9, 8 and 7) as the training phases (I, II, III and IV). Data collected were on total cholesterol, High Density Lipoprotein (HDL) and triglycerides. The % fat (% F), body mass index (BMI), waist-hip ratio (WHR), lean mass (LM), central fat (BF), total (TF) and peripheral (PF), weight and height were used to measure the morphological parameters. For control of variables (TCD4 +, viral load, Triglycerides, Cholesterol, HDL), the information contained in the blood tests every four months were investigated. After Phase I and II, it was used a structured interview. Then sampling was carried out considering the pre-and post-tests 1, 2, 3 and 4 (after 16, 32, 48 and 64 weeks of training, respectively). Daily, the intensity of the work was checked by the scale of perceived exertion for exercises adapted to resistance34. Procedures used were descriptive statistics (dispersion, absolute and relative frequencies, means, standard deviations and minimum and maximum values) as well as Spearman linear correlation adopting a significance level of p ≤ 0.05. Positive changes were observed for TCD4 + and viral load in all phases of the PTP. For the morphological components, the loss of central subcutaneous fat (CSF) and total subcutaneous fat (TSF) for both sexes and the decrease in % BF among women were the most dramatic results after the training phase I. For men, results were more significant to % F and LM in Phases I and II and peripheral subcutaneous fat (PSF) declined in all phases of the exercise. As for women, results were more expressive for % F and TM in the phases I and II and the PSF decreased in all phases of the exercise. Whereas for women, the waist/hip ratio (WCQ) and 0% F decreased and showed a positive association with triglycerides (WHR r * 0.82, p 0.042, r 0.88 TSF *, p 0.019 and r 1.00 ** CSF, p <0.001) and among men with limb subcutaneous fat (LSF)* r 0.65, p 0.029). The PTP provided improvement in the health, self-esteem and quality of life, proving to be a possible strategy to positively influence the expression of immunological parameters (TCD4 +) and virological (viral load) and morphological components of people living with HIV causing no deleterious effects in these parameters

Pensando o estatuto do idoso no âmbito da saúde: uma reflexão à prática da cidadania

Um envelhecer saudável compreende fundamentalmente, o atendimento de necessidades que vão além da manutenção de um bom estado de saúde física. Faz-se necessário valorizar o idoso como pessoa socialmente útil, favorecendo, direta e indiretamente, o idoso, a família e comunidade para o alcance de um estilo de vida desejável. Pautando-se nessas reflexões, a partir da importância de um estudo em que se procure avaliar até que ponto, segmentos da sociedade e o próprio idoso, conhecem os direitos deste, e com isto, procurar pontuar conceitos de cidadania, vinculando os idosos a essas práticas, tendo como ponto de partida neste estudo, a saúde, como prática muito questionada no cotidiano. Este estudo, portanto, tem como objetivo verificar o conhecimento de estudantes universitários sobre os direitos do idoso no que se refere à saúde, contemplados no Estatuto do Idoso e explorar os direitos do idoso no âmbito da saúde na concepção de estudantes universitários. Trata-se de um estudo exploratório descritivo, numa abordagem qualitativa, centrando-se na análise dos aspectos legais (jurídicos) sobre o conhecimento dos direitos do idoso no âmbito da saúde pelos estudantes e sua implicação na prática da cidadania. O estudo foi realizado na cidade de João Pessoa - Pb, estudantes universitários de diferentes cursos do Campus I da Universidade Federal da Paraiba. O instrumento utilizado para coleta de dados foi uma entrevista semi-estruturada. Os coletados foram qualitativamente, explorando-se as falas dos sujeitos, utilizando-se a técnica de análise de conteúdo temática categorial. Os resultados encontram-se apresentados em quadros e temas. A partir de diferentes artigos realizados no decorrer do curso. Diante da expressividade dos resultados encontrados nesta pesquisa, é possível afirmar que os estudantes universitários ainda conhecem pouco o direito dos idosos, em particular, no campo da saúde, mesmo os estudantes da referida área. No contexto interdisciplinar este estudo sugere ações dirigidas à população do estudo propiciando pesquisas com maior impacto na mídia dirigida tanto aos idosos como a sociedade em geral

Um modelo analítico da qualidade da dieta de adolescentes estudantes da rede publica de ensino de Natal, Brasil

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Cartografia da percepção de mês e profissionais sobre a atenção a saúde de crianças/adolescentes soropositivos no município de Natal

This study had as objective to identify to the perception of mothers and professionals of health on the attention to the health of HIV-Positive children/adolescents in the city of Natal-RN. It is a descriptive-exploratory study with quantitative and qualitative approach, carried through in the Giselda Trigueiro Hospital and in the State and Municipal Health Councils in Natal - RN, from march to december of 2005. The sample was composed by 56 participants, 33 mothers of children who use specialized assistance and 23 professionals. Data collection occurred with the application of a half-structuralized interview. Quantitative data were analyzed through descriptive statistics and qualitative data were submitted to content analysis. Prevailing categories in relation to the cartography of the attention to seropositive children and adolescents in Natal were: Organization and dynamics of the attention; Institutional management and human development; Control and prevention; other contexts of attention; relationship/communication team-patient and organization and functioning of the services. The profile epidemiologist of the children, adolescents and of the people/mothers, who take care of them with HIV/Aids, followed the evolution of the epidemic in the country and the world. It was verified that mothers need care and information; however they make a positive evaluation of the attendance they receive. It was also observed many gaps in the services of assistance, in which the researched group was attended, beyond imperfections in the communication between health professionals and users. The professionals recognize the advances that the politics represent for the assistance of people with Aids; however feel themselves limited by the precariousness of the system and the partner-economic conditions of the people. According to these data, it can be verified great challenges to go through in the context of integrality of the assistance to HIV positive children and adolescents in the city of Natal and in the improvement of the communication in the institution of reference