Avaliação da genotoxicidade das águas sueprficiais da Barragem Engenheiro Armando Ribeiro Gonçalves, Assu/RN

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Ritmo de atividade de forrageio de Dinoponera quadríceps em ambiente natural

In order to characterize the seasonal and daily rhythm of Dinoponera quadriceps foraging activity in natural environment, four colonies of D. quadriceps were observed in an area of secondary Atlantic forest in northeastern Brazil. Data collection was performed during 72 hours every three months during an annual cycle. Colonies of D. quadriceps exhibited seasonal variation in foraging activity, peaking in the early dry season, followed by a sudden decline at the end of this season and increasing again at the late rainy season. The seasonal rhythm of foraging was positively related to the duration of the daylight and luminosity, and negatively to the time of sunrise and rainfall. Regarding the daily rhythm, foraging activity was predominantly diurnal independent of season. At the early dry season, the colonies had two activity peaks, one in the morning and another in the afternoon, with a decrease in foraging at midday, while in the rest of the year foraging activity was distributed more evenly throughout the daylight. The daily rhythm of foraging activity had a stronger and positive relation with light intensity. The second most important factor determining the daily rhythm of foraging was temperature that was also positively related for most of the year. Relative humidity showed a weak and negative relation with the daily rhythm of foraging in just one month of observation

Simulação de reservatórios de petróleo em ambiente MPSoC

The constant increase of complexity in computer applications demands the development of more powerful hardware support for them. With processor's operational frequency reaching its limit, the most viable solution is the use of parallelism. Based on parallelism techniques and the progressive growth in the capacity of transistors integration in a single chip is the concept of MPSoCs (Multi-Processor System-on-Chip). MPSoCs will eventually become a cheaper and faster alternative to supercomputers and clusters, and applications developed for these high performance systems will migrate to computers equipped with MP-SoCs containing dozens to hundreds of computation cores. In particular, applications in the area of oil and natural gas exploration are also characterized by the high processing capacity required and would benefit greatly from these high performance systems. This work intends to evaluate a traditional and complex application of the oil and gas industry known as reservoir simulation, developing a solution with integrated computational systems in a single chip, with hundreds of functional unities. For this, as the STORM (MPSoC Directory-Based Platform) platform already has a shared memory model, a new distributed memory model were developed. Also a message passing library has been developed folowing MPI standard

A utilização da modelagem física no estudo do desenvolvimento, geometria e cinemática de falhas distensionais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Percepção de cuidadores de crianças acerca da prevenção de acidentes domésticos infantis: análise à luz do modelo de crenças em saúde

This study aimed to analyze the perception of home caregivers of children from zero to five years-old on child domestic accidents and their influence in preventing these events. Exploratory and descriptive study with a qualitative approach, conducted with 20 caregivers attended at the Family Health Unit of Cidade Nova in Natal/Rio Grande do Norte, Brazil. The participants should have age less than 18 years-old, being a caregiver of at least a five year-old child and living in the area ascribed of Family Health Unit in the neighborhood Cidade Nova. Data collection occurred between March and April 2013 and a semistructured interview script was used. This stage was preceded by the acquiescence of the director of health institution where the research was developed, the Health Department of the Municipality of Natal as well as the Ethics Committee in Research of Universidade Federal do Rio Grande do Norte under Opinion nº 219 872 and CAAE nº 12236013.7.0000.5537. It is noted that respondents were asked to formal authorization by the Term of Consent. The data were treated according to the technique of the Collective Subject Discourse and analyzed based on three dimensions of the Health Belief Model, relating to perceptions of susceptibility to infant domestic accidents, self-efficacy to prevent infant and indicia domestic accidents for action of preventing domestic accidents in childhood. The results revealed that all the respondents were women, who, in their majority, they are mothers of the children they care, and predominantly they are aged between 18 and 30 years-old, full high school education and unemployed. Concerning the perception of susceptibility, it was unveiled understanding of deponents on various types of accidents, which are considered preventable. For this purpose, it was highlighted that the constant surveillance of the children is essential, keeping in view their high degree of curiosity and immaturity. On the perceived selfefficacy, the participants reported adopting preventive measures; however, they reported experiencing falls, burns, electric shocks and dog bites. In regard to the meaning attributed to experienced accidents they highlighted their feelings of guilt and despair, particularly about the cases understood as serious. Regarding the last dimension analyzed, related to indications for action, family, friends and television were the main source of information about household accidents and their prevention methods; however, health professionals were rarely cited as issuers of such knowledge. It is concluded that there is a widespread perception of women about prevention of domestic accidents and the weakness in the view of health professionals, including nurses, as disseminators of this information. This suggests the need to strengthen the dialogue on the issue and encouraging the participation of caregivers actively in the prevention of child domestic accidents

Ampliação do Setor de Aulas Teóricas IV - UFRN: proposta arquitetônica baseada no conceito da flexibilidade e adaptabilidade, utilizando os parâmetros de conforto ambiental

In recent years, the Universidade Federal do Rio Grande do Norte (UFRN) has come through an intense process of expansion, common for the Instituições Federais de Ensino Superior (IFES) - Higher Education Institutions – since the implantation of the Programa de Reestruturação e Expansão das Universidades Federais (REUNI), a program of restructuring and expansion of the federal universities. The incentives made at UFRN can be seen into the expansion of the fields of teaching, research and extension, besides hiring human resources and adaptation / expansion of physical spaces. The focus of the UFRN at the technological area through the project (REUNI) has reflected in a significant expansion of the physical structure of the Center of Technology, area where the section of classes IV remains being the main set of rooms that supports the demand of the courses in the technological area, in which highlights the lack of classrooms. In this sense, the work presented here, proposes an architectural blueprint for expanding the physical space of this sector, based in this main parameters: (i) the spatial flexibility that attends the varying numbers of students per class; (ii) the environmental comfort, using the parameters and guidelines constructive for the Bioclimatic Zone 8; (iii) the requirements contained in the rules of ABNT NBR 9050:2004, 9077:2001 and NBR NBR 15220-3:2003. The architectural proposal used the maximum template allowed by the UFRN Central Campus Master Plan, four floors, considering the existing building (area equal to 7413.95 m²) as the ground floor and the extension proposed distributed on three floors, with an area of around 2,535, 00 m² each, making up a total of 7602.65 m² of total area built

Spondias tuberosa Arr. (UMBU): estudo fitoquímico e avaliação do potencial anti-inflamatório

Spondias tuberosa Arruda (Anacardiaceae) is a fruitful tree popularly known as umbuzeiro, tapereba or umbu. It is a native and endemic species from Brazil, widespread in Brazilian Northeast. The species is important in folk medicine of the semi-arid Northeast, where it is mainly used to treat various inflammatory conditions, digestive problems as well as viral and bacterial infections. However, despite the common use in folk medicine, there are scarce pharmacological and phytochemicals studies that afford scientific evidence to its popular use. Therefore, this study aimed to characterize the chemical markers in S. tuberosa leaves extract, obtained by maceration ethanol:water (70:30, [v/v]), and evaluate its anti-inflammatory potential in vivo. The phytochemical profile in TLC analysis suggested the occurence of the flavonoids rutin and isoquercitrin. HPLC analysis enabled us to confirm the presence of flavonoids and also, were detected the phenolic acids, chlorogenic acid and caffeic acid. In addition was developed and validated a HPLC method to evaluate the content of the identified compounds in S. tuberosa leaves extract according to RDC 899/2003 of ANVISA and ICH Guidelines 2005. In order to evaluate the anti-inflammatory potential of S. tuberosa leaves extract, the peritonitis and paw edema models induced by carrageenan were used, administration i.p. in mice. The results highlighted the anti-inflammatory property in vivo at 125, 250 and 500 mg/kg since a decrease in leukocyte influx to the site of inflammation, diameter of the edema and the level of myeloperoxidase were observed when compared to the drug control dexamethasone (2 mg/kg, i.p. route). Taken together, the results pointed out S. tuberosa as a potential species for developing phytotherapic derivatives in according to its popular use. With regard to the characterization markers, chlorogenic acid, caffeic acid, rutin and isoquercitrin were identified and quantified in Spondias tuberosa leaves extract so they could be used in quality control analyses of the raw material and extracts of this species.

Estimação de potência em tempo real utilizando a transformada wavelet

The goal of the power monitoring in electrical power systems is to promote the reliablility as well as the quality of electrical power.Therefore, this dissertation proposes a new theory of power based on wavelet transform for real-time estimation of RMS voltages and currents, and some power amounts, such as active power, reactive power, apparent power, and power factor. The appropriate estimation the of RMS and power values is important for many applications, such as: design and analysis of power systems, compensation devices for improving power quality, and instruments for energy measuring. Simulation and experimental results obtained through the proposed MaximalOverlap Discrete Wavelet Transform-based method were compared with the IEEE Standard 1459-2010 and the commercial oscilloscope, respectively, presenting equivalent results. The proposed method presented good performance for compact mother wavelet, which is in accordance with real-time applications.

Contribuições para estratégia de controle aplicada à geração fotovoltaica interconectada à rede elétrica

Generation systems, using renewable sources, are becoming increasingly popular due to the need for increased use of electricity. Currently, renewables sources have a role to cooperate with conventional generation, due to the system limitation in delivering the required power, the need for reduction of unwanted effects from sources that use fossil fuels (pollution) and the difficulty of building new transmission and/or distribution lines. This cooperation takes place through distributed generation. Therefore, this work proposes a control strategy for the interconnection of a PV (Photovoltaic) system generation distributed with a three-phase power grid through a connection filter the type LCL. The compensation of power quality at point of common coupling (PCC) is performed ensuring that the mains supply or consume only active power and that his currents have low distorcion. Unlike traditional techniques which require schemes for harmonic detection, the technique performs the harmonic compensation without the use of this schemes, controlling the output currents of the system in an indirect way. So that there is effective control of the DC (Direct Current) bus voltage is used the robust controller mode dual DSMPI (Dual-Sliding Mode-Proportional Integral), that behaves as a sliding mode controller SM-PI (Sliding Mode-Proportional Integral) during the transition and like a conventional PI (Proportional Integral) in the steady-state. For control of current is used to repetitive control strategy, which are used double sequence controllers (DSC) tuned to the fundamental component, the fifth and seventh harmonic. The output phase current are aligned with the phase angle of the utility voltage vector obtained from the use of a SRF-PLL (Synchronous Reference Frame Phase-Locked-Loop). In order to obtain the maximum power from the PV array is used a MPPT (Maximum Power Point Tracking) algorithm without the need for adding sensors. Experimental results are presented to demonstrate the effectiveness of the proposed control system.

iSalud: uma arquitetura para publicação e distribuição de sistemas de informação para o SUS

The Brazil Telehealth Networks Program was established by the Ministry of Health in 2007. Its main objective is to support professionals in Primary Health Care (PHC) by offering educational qualification, resulting in more favorable conditions to fixate the professional in remote areas. The formulation and management of telehealth services are performed by scientific and technical centers that are operated by public institutions of higher education and responsible for providing tools and services in the context of the regions where they are. However, one of the problems generated by this decentralization is the development of various tools with different types of language, architecture and without any regulation and integration of information with the Ministry of Health. Aiming to solve the above problem, we propose the specification, implementation and validation of an architectural model in the development and distribution of the Unified Health System software tools. This proposed architecture enables tools developed in telehealth center to be shared among the other centers, thereby preventing the unnecessary use of resources.

Desempenho de uma lagoa de infiltração na absorção de cheias e na recarga de aquífero

A type of macro drainage solution widely used in urban areas with predomi-nance of closed catchments (basins without outlet) is the implementation of detention and infiltration reservoirs (DIR). This type of solution has the main function of storing surface runoff and to promote soil infiltration and, consequently, aquifer recharge. The practice is to avoid floods in the drainage basin low-lying areas. The catchment waterproofing reduces the distributed groundwater recharge in urban areas, as is the case of Natal city, RN. However, the advantage of DIR is to concentrate the runoff and to promote aquifer recharge to an amount that can surpass the distributed natu-ral recharge. In this paper, we proposed studying a small urban drainage catchment, named Experimental Mirassol Watershed (EMW) in Natal, RN, whose outlet is a DIR. The rainfall-runoff transformation processes, water accumulation in DIR and the pro-cess of infiltration and percolation in the soil profile until the free aquifer were mod-eled and, from rainfall event observations, water levels in DIR and free aquifer water level measurements, and also, parameter values determination, it is was enabled to calibrate and modeling these combined processes. The mathematical modeling was carried out from two numerical models. We used the rainfall-runoff model developed by RIGHETTO (2014), and besides, we developed a one-dimensional model to simu-late the soil infiltration, percolation, redistribution soil water and groundwater in a combined system to the reservoir water balance. Continuous simulation was run over a period of eighteen months in time intervals of one minute. The drainage basin was discretized in blocks units as well as street reaches and the soil profile in vertical cells of 2 cm deep to a total depth of 30 m. The generated hydrographs were transformed into inlet volumes to the DIR and then, it was carried out water balance in these time intervals, considering infiltration and percolation of water in the soil profile. As a re-sult, we get to evaluate the storage water process in DIR as well as the infiltration of water, redistribution into the soil and the groundwater aquifer recharge, in continuous temporal simulation. We found that the DIR has good performance to storage excess water drainage and to contribute to the local aquifer recharge process (Aquifer Dunas / Barreiras).

Preferência e competição alimentar em um grupo de Sapajus flavius em fragmento de Mata Atlântica em Caaporã – Paraíba – Brasil

Feeding is the primary selective pressure in all forms of animals. Nutritional ecological models predict consequences of preferred and non-preferred food consumption on behavioural, physiological and morphological adaptations. At same time, socioecological models infer socio-organizarion patterns based on feeding competition faced by animals. A list of preferred foods, and inferences regarding the intensity of feeding competition and its behavioural consequences are information of much importance for management of populations in fragments. In this work we observed the feeding behavior and spatial positioning of a group of more than 100 blond capuchin monkeys (Sapajus flavius) that inhabit a fragment of Atlantic forest, surrounded by sugarcane plantation. We compared the consumption of different food items with their monthly availability in the area to define the preferred and fallback food items. We recorded the vocalizations of aggression and the inter-individual distance (area of Minimum Convex Polygon/n individuals) to infer the type of food competition experienced by animals. In the year studied the fruit feeding time correlated with top consumed fruit productivity, indicating preference for fruits. Our data indicate that the species Elaeis sp., Cecropia palmata, Inga spp. and Simarouba amara are the preferred food items in the diet. Available all year round and uniformly distributed, sugarcane was a regular item in the diet and its was characterized as a staple fallback food for this group. Although fruits are preferential food items, direct competition rate did not correlate to fruit productivity in the area, maintaining the high rates throughout the year (2.45 events/ hour). The inter-individual distance index positively correlated with rain fall indicating scramble food competition. The number of neighbours of females carrying infants was smaller when fruit productivity is low, indicating that females carrying infants are suffering increased indirect competition. Our data indicates that blond capuchins in this fragment make use of sugar cane as a staple fallback food, which evidence the importance of sugar cane landscape for the survival of this critically endangered capuchin species in fragmented habitats in Northeast Brazil. A preliminary list of preferred and important foods is offered, and can assist in the choice of trees for reforestation, better fragments to be preserved and areas of release and translocation of animals. We did not observe an increase of contest competition while using preferred foods, but when using staple FBF. This may be due the altered environment, which results in high competition food throughout the year. Both the food preference as the social and behavioral consequences of high food competition experienced by animals in this fragment must be accompanied over the years to ensure the survival of this population.

Preferência e competição alimentar em um grupo de Sapajus flavius em fragmento de Mata Atlântica em Caaporã – Paraíba – Brasil

Feeding is the primary selective pressure in all forms of animals. Nutritional ecological models predict consequences of preferred and non-preferred food consumption on behavioural, physiological and morphological adaptations. At same time, socioecological models infer socio-organizarion patterns based on feeding competition faced by animals. A list of preferred foods, and inferences regarding the intensity of feeding competition and its behavioural consequences are information of much importance for management of populations in fragments. In this work we observed the feeding behavior and spatial positioning of a group of more than 100 blond capuchin monkeys (Sapajus flavius) that inhabit a fragment of Atlantic forest, surrounded by sugarcane plantation. We compared the consumption of different food items with their monthly availability in the area to define the preferred and fallback food items. We recorded the vocalizations of aggression and the inter-individual distance (area of Minimum Convex Polygon/n individuals) to infer the type of food competition experienced by animals. In the year studied the fruit feeding time correlated with top consumed fruit productivity, indicating preference for fruits. Our data indicate that the species Elaeis sp., Cecropia palmata, Inga spp. and Simarouba amara are the preferred food items in the diet. Available all year round and uniformly distributed, sugarcane was a regular item in the diet and its was characterized as a staple fallback food for this group. Although fruits are preferential food items, direct competition rate did not correlate to fruit productivity in the area, maintaining the high rates throughout the year (2.45 events/ hour). The inter-individual distance index positively correlated with rain fall indicating scramble food competition. The number of neighbours of females carrying infants was smaller when fruit productivity is low, indicating that females carrying infants are suffering increased indirect competition. Our data indicates that blond capuchins in this fragment make use of sugar cane as a staple fallback food, which evidence the importance of sugar cane landscape for the survival of this critically endangered capuchin species in fragmented habitats in Northeast Brazil. A preliminary list of preferred and important foods is offered, and can assist in the choice of trees for reforestation, better fragments to be preserved and areas of release and translocation of animals. We did not observe an increase of contest competition while using preferred foods, but when using staple FBF. This may be due the altered environment, which results in high competition food throughout the year. Both the food preference as the social and behavioral consequences of high food competition experienced by animals in this fragment must be accompanied over the years to ensure the survival of this population.

Arquitetura em cidades “sempre novas”: modernismo, projeto e patrimônio

Arquitetura em cidades “sempre novas”: modernismo, projeto e patrimônio. Com essa chamada, a 4ª edição do encontro DOCOMOMO Norte-Nordeste, realizado na Universidade Federal do Rio Grande do Norte, em Natal, no período de 29 de maio a 02 de junho de 2012, reuniu um conjunto de trabalhos, mesas e conferências para pensar o processo de renovação arquitetônica e urbana de nossas cidades partindo da questão central de que o gosto pelo novo, pela novidade, torna rapidamente obsoleto aquilo que, quando surgiu, também era novo, moderno. O encontro contemplou uma diversidade de enfoques distribuída em três eixos temáticos:1) A arquitetura moderna como projeto; 2) experiências de conservação e transformação; e 3)narrativas historiográficas, na observação da especificidade da arquitetura, do urbanismo e do paisagismo no Brasil. Este livro, se organiza segundo cinco abordagens que estão subjacentes aos três eixos temáticos acima mencionados: a) trajetórias profissionais; b) a presença modernista em cidades brasileiras; c) a documentação, conservação, projeto e restauro; d) reflexões sobre a produção modernista e, finalmente, e) a tecnologia e desempenho. Para cada abordagem, foram selecionados alguns trabalhos representativos apresentados na ocasião. Espera-se contribuir, com esse livro, para o debate sobre a aparente – ou, para muitos, real – contradição entre a necessidade de renovação constante de nosso ambiente construído – afinal, a arquitetura e a cidade são por natureza dinâmicas – e a necessidade de preservação, particularmente do legado modernista inscrito em nossa paisagem urbana, ameaçado de extinção pelo descaso, pelo abandono ou pela transformação descabida.

Arquitetura em cidades “sempre novas”: modernismo, projeto e patrimônio

Arquitetura em cidades “sempre novas”: modernismo, projeto e patrimônio. Com essa chamada, a 4ª edição do encontro DOCOMOMO Norte-Nordeste, realizado na Universidade Federal do Rio Grande do Norte, em Natal, no período de 29 de maio a 02 de junho de 2012, reuniu um conjunto de trabalhos, mesas e conferências para pensar o processo de renovação arquitetônica e urbana de nossas cidades partindo da questão central de que o gosto pelo novo, pela novidade, torna rapidamente obsoleto aquilo que, quando surgiu, também era novo, moderno. O encontro contemplou uma diversidade de enfoques distribuída em três eixos temáticos:1) A arquitetura moderna como projeto; 2) experiências de conservação e transformação; e 3)narrativas historiográficas, na observação da especificidade da arquitetura, do urbanismo e do paisagismo no Brasil. Este livro, se organiza segundo cinco abordagens que estão subjacentes aos três eixos temáticos acima mencionados: a) trajetórias profissionais; b) a presença modernista em cidades brasileiras; c) a documentação, conservação, projeto e restauro; d) reflexões sobre a produção modernista e, finalmente, e) a tecnologia e desempenho. Para cada abordagem, foram selecionados alguns trabalhos representativos apresentados na ocasião. Espera-se contribuir, com esse livro, para o debate sobre a aparente – ou, para muitos, real – contradição entre a necessidade de renovação constante de nosso ambiente construído – afinal, a arquitetura e a cidade são por natureza dinâmicas – e a necessidade de preservação, particularmente do legado modernista inscrito em nossa paisagem urbana, ameaçado de extinção pelo descaso, pelo abandono ou pela transformação descabida.