A influência da recompensa e da experiência na discriminação visual simultânea em sagüi comum (Callithrix jacchus)

The discrimination learning is assessed through instrumental tasks in which the individual is rewarded for choosing one item over another. Thus, in concurrent visual discrimination of objects the animal must learn that only one of the objects will be rewarded. The concurrent visual discrimination is relatively simple, and already been observed Callithrix jacchus is able to accomplish this task. As yet wasn't seen the influence of the qualitative aspects of the rewards, in the performance of concurrent visual discrimination of objects in nonhuman primates, and as in most tests are used isolated animals, the present study had two stages: at first we had as objective to analyze the influence of the caloric value of the reward on the performance in concurrent visual discrimination of objects in isolated animals; in the second, we had the intention analyze performance of C. jacchus in realization of discrimination task in different social contexts, as well as, analyze the influence of previous experience in task performance. In the first stage (Study 1), the animals were not able to discriminate foods that presented small caloric differences . This incapacity in discriminates the rewards was responsible by generating randomness in task of concurrent visual discrimination of objects. In the second stage (Study 2), observed that, independent of social context in which the task was presented, the performance both of the experienced animals as the inexperienced animals tended to randomness. In the first case, is likely that the pattern of responses of the experienced animals is a reflection of their own performance when they were observed in isolation. In the second case, in turn, the randomness was probably due to the small number of sessions. Although present a pattern of performance similar to inexperienced individuals, we verify that the experienced animals monopolize the food consumption when they were in the presence of inexperienced individuals. This was a consequence of the experienced animals have presented lower latency the approximation of apparatus and, consequently, obtain more food. In turn, the inexperienced animals, when were in the presence of experienced, had to adopt alternative strategies to obtain food. Thus, C. jacchus is able to use the previous information he had about the task of solving their own benefit.

Efeito dos andrógenos na estabilização da preferência manual em machos adultos de sagui comum (Callithrix jacchus)

The role of steroids hormones on the behavior of vertebrates have been described as organizational and activational effects. These actions occur in different periods of the ontogenetic development as fetal, early post natal and during puberty (organizational effect) or modifying the expression of behavioral patterns during time life (activational effects). Studies on brain lateralization in hand use in human and non-human primates have shown that sexual hormones seems to participate in the process of handedness strength that begins in the puberal period and is stabilized at the adult age. The aim of this study was to investigate in adult male Callithrix jacchus if the strength of use of the hand in common marmoset adult male is stable (organizational effect) or androgens variations could affect its stability (activational effect). The preferential use of one hand in 14 common marmoset (Callithrix jacchus was studied in two contexts: (1) spontaneous holding food and directing the food to mouth (feeding episodes), and (2) forced reaching food tests where the animal have to reach the food through a hole within a cover plate with a central hole that allow the use of one hand only to reach the food. The records were made during 5 sessions/20 bouts each during baseline totalizing 100 episodes before two treatments. Firstly it was used GnRH antagonist: a single subcutaneous injection of 100µg de Cetrotide – acetate of cetrorrelix (Baxter Oncology GmbH, Germany) (n=10). Secondly, a single GnRH injection of 0.2mg of GnRH (Sigma – Aldrich) (n= 8) was used. After injections 20 successful attempts of hand use episodes was recorded in the 1st , 2 nd, 7th, 15th and 30 th days, totalizing in the whole period 100 episodes for each context, after both treatments. Fecal sampling to measure extracted fecal androgens was performed in all days of data collection across the length of the basal and during the experimental periods. Statistical analysis by mixed model, Tukey test to compare mean values after the two treatments, and Levene test to compare mean variance were used, all for p-value < 0.05. In basal phase 6 animals used preferentially the right hand, 5 the left and 3 were ambidextrous. Mean handedness index in basal phase were different from that after both treatment starting at 7th day. Mean variance of handedness index for spontaneous and forced activities does not differs before and after both treatments but the mean values for GnRH index were higher than that observed for its antagonist. These findings suggested that androgens have an activational effect on handedness in adult male C. jacchus

Início da função gonadal no sagui comum (Callithrix jacchus): diferenças entre gêneros

Os primatas não humanos, como Callithrix jacchus vêm sendo utilizados com maior frequência em pesquisa biomédica e, recentemente, nosso laboratório propôs uma nova classificação para monitorar com mais detalhes as modificações comportamentais e hormonais relacionadas ao desenvolvimento. O presente trabalho monitorou os níveis de hormônios gonadais de 4 machos e 6 fêmeas de C. jacchus durante as fases juvenil I e II e subadulta (dos 5 aos 15 meses). Os resultados apontaram que os níveis de progesterona nas fêmeas e andrógenas nos machos foram estatisticamente mais elevados nos estágios juvenil II e subadulto, respectivamente, em relação ao estágio juvenil I. Estes achados indicam que, de acordo com a nova classificação, foi possível observar que o funcionamento gonadal se instala mais cedo nas fêmeas

Efeito do parceiro social sobre a resposta comportamental ao ambiente novo em sagüi comum (Callithrix jacchus)

Algumas pesquisas demonstram que a presença de um parceiro social durante uma situação de risco modula a resposta ao estresse, atenuando seus efeitos negativos. Neste estudo, 8 díades de machos e 8 de fêmeas de sagüi comum (Callithrix jacchus) foram expostos a um ambiente novo, sozinhos e acompanhados de um parceiro de mesmo sexo e idade. Quando submetidos a um ambiente novo em companhia de um animal de mesmo sexo, os machos apresentaram um perfil mais filiativo enquanto as fêmeas foram mais competitivas entre si. Os resultados mostram que a resposta comportamental é sexualmente dimórfica, e que machos e fêmeas utilizam diferentes estratégias quando confrontados com situações desafiadoras no ambiente natural Abstract Some researches demonstrate that the presence of a social partner during a challenging situation modulates the stress response, decreasing its negative effects. In this study common marmoset (Callithrix jacchus) males and females were exposed to a new environment, alone or in companion of a social partner of the same sex and age. When submitted to new environment in companion of a same-sex social partner males showed more affiliation whereas females performed agonistic behaviors. The results show that behavioral response is sexually dimorphic and that males and females used different strategies when facing challenging situations in natural conditions

Crítica descentrada para o senso comum: amostragem da reflexão acerca da comunicação contemporânea realizada na Universidade Federal do Rio Grande do Norte

Crítica descentrada para o senso comum: MUNIZ, Euzébia Maria de Pontes Targino; DANTAS, Juliana Bulhões Alberto; ALBANO, Sebastião Guilherme (Orgs). Amostragem da reflexão acerca da comunicação contemporânea realizada na Universidade Federal do Rio Grande do Norte. Natal, RN: EDUFRN, 2012.

Terrenos de marinha: terras públicas com função social? um estudo da orla marítima de natal

This work has as its theme the social function of terrenos de marinha. Theresearch universe is the terrenos de marinha of Natal coastline, focusing on thefulfillment of its social function. Prescribed by law since the colonial period with thepurpose of protecting the coast and free movement of people and goods, theywere swathes of land not available to private use by individuals. With the transitionfrom the allotments system to the purchase and sale, regard to land access,crystallized with the creation of the Land Law in the nineteenth century, the land isheld as merchandise and terrenos de marinha, following this logic, also acquireexchange value and become capable of enjoyment by private individuals, with thecondition of tax payments to the state. This is seen until the twentieth century,when in 1988, primarily because of the Federal Constitution promulgation, begins anew cycle when is possible to use on terrenos de marinha the principle of thesocial function of property. From this perspective this study aims to identify thesocial function of terrenos de marinha in Natal, focusing on the public destinationand the use value of the city coastline. To this end, it was made a data collection inthe on-line information system of the Federal Heritage Department of Rio Grandedo Norte (SPU / RN) and in the terrenos de marinha areas, in order to find out ifthey had public or private use, or if they were empty lots, as well as if thepopulation access to the shore exist. Interviews with managers of the SPU weremade. The empirical study showed that the social function of terrenos de marinhain the city of Natal still didn´t happen, considering the constant existence of vacantlots in their areas, the lack of access in significant portions of the coastline and thereduced areas directed to common use along the coastline, minimizing its potentialof enjoyment by the population. It concludes by pointing to the existence of a newtransition phase on the terrenos de marinha, in witch, gradually, come up lawprovisions in the legal system and public policies to expand the purely taxcollection function attributed to this land for two centuries. In this direction, thesocial function of terrenos de marinha is embodied in concomitant adjustment ofthe tax collection function and the rescue of coastline use value, national heritageand a place for sociability and social relations development

Vitalidade no centro antigo Teresina, Piauí Praça Marechal Deodoro: uma intervenção contemporânea em área de valor patrimonial

This study deals with the discussions of contemporary interventions in public spaces in areas of heritage value. The product of this dissertation is an Intervention Project to Marechal Deodoro Square located in Teresina/PI center. The starting point for understanding the theme of this study is to investigate the accessibility and vitality of a public space - through relationship between form and uses. The spatial properties of accessibility and visibility as well as the distribution of land use - factors were associated with distinct patterns of vitality - and compared to usage patterns observed in situ and statements from users obtained through the results of the questionnaires. In attention to questions about the building constructed, particularly in historical centers, considers the guidelines to define intervention strategies in the square, consisted in the development of simulations that after evaluation of results of redesign, was chosen the best option to meet the necessary requirements to the performance, considering the spatial properties of integration and visibility that meet these requirements. Therefore, the "Intervention Project" carried out for the Marechal Deodoro Square characterization proposed items are discussed: spatial structure, vegetation, road network, pavements, street furniture and lighting

Nova técnica para obtenção de fraturas com altíssima condutividade em poços de petróleo

Increase hydrocarbons production is the main goal of the oilwell industry worldwide. Hydraulic fracturing is often applied to achieve this goal due to a combination of attractive aspects including easiness and low operational costs associated with fast and highly economical response. Conventional fracturing usually involves high-flowing high-pressure pumping of a viscous fluid responsible for opening the fracture in the hydrocarbon producing rock. The thickness of the fracture should be enough to assure the penetration of the particles of a solid proppant into the rock. The proppant is driven into the target formation by a carrier fluid. After pumping, all fluids are filtered through the faces of the fracture and penetrate the rock. The proppant remains in the fracture holding it open and assuring high hydraulic conductivity. The present study proposes a different approach for hydraulic fracturing. Fractures with infinity conductivity are formed and used to further improve the production of highly permeable formations as well as to produce long fractures in naturally fractured formations. Naturally open fractures with infinite conductivity are usually encountered. They can be observed in rock outcrops and core plugs, or noticed by the total loss of circulation during drilling (even with low density fluids), image profiles, pumping tests (Mini-Frac and Mini Fall Off), and injection tests below fracturing pressure, whose flow is higher than expected for radial Darcian ones. Naturally occurring fractures are kept open by randomly shaped and placed supporting points, able to hold the faces of the fracture separate even under typical closing pressures. The approach presented herein generates infinite conductivity canal held open by artificially created parallel supporting areas positioned both horizontally and vertically. The size of these areas is designed to hold the permeable zones open supported by the impermeable areas. The England & Green equation was used to theoretically prove that the fracture can be held open by such artificially created set of horizontal parallel supporting areas. To assess the benefits of fractures characterized by infinite conductivity, an overall comparison with finite conductivity fractures was carried out using a series of parameters including fracture pressure loss and dimensionless conductivity as a function of flow production, FOI folds of increase, flow production and cumulative production as a function of time, and finally plots of net present value and productivity index

Biologia reprodutiva da |Tainha, Mugil curema valencientes, 1836 (osteichthyes: mugilidade) nas águas costeiras do Rio Grande do Norte

The marine fish white mullet, Mugil curema Valenciennes, 1836 (Osteichthyes: Mugilidae) exhibits a wide geographical distribution, being common in the Brazilian coast and is an important component of the artisanal fisheries. The objective of this study was to investigate the reproductive biology of M. curema in the coastal waters of Rio Grande do Norte. Fish samples were captured on a monthly basis during August, 2008 to July, 2009. The fish specimens were numbered, weighed, measured, dissected and their gonads were removed, weighed, their sex and gonadal development were identified. The length-weight relationship was determined for males and females. The sex ratio, the size at first gonadal maturation and gonadosomatic index (GSI) were calculated and ovarian development was investigated using macroscopic and histological techniques. The fecundity, spawning type and the reproductive period of the species were determined. A total of 366 specimens (186 males and 180 females) were captured. The sex ratio was 1:1 and the females were heavier than males. The estimated values of the angular coefficient for both sexes suggest that the species has isometric growth. The size at which 50% of the population began the process of maturation was 25.9 cm of total length for grouped sex. The macroscopic characteristics of the ovaries showed four stages of development: immature, maturing, mature and spent. However, the microscopic characteristics of the ovaries showed five stages of development: immature, early maturing, late maturing, mature and spent. The development of oocytes indicated five phases: Chromatin-nucleolus (phase I), initial perinucleolar (phase II), final perinuclear (phase II), formation of vitelline vesicle or yolk (phase III), vitellogenic (phase IV) and complete vitellogenesis (phase V). The species has a prolonged spawning period, with two peaks coinciding with the rainy season.

Influência dos aspectos clínicos e assistenciais na qualidade de vida das pessoas com doença venosa crônica com e sem úlcera venosa

Conselho Nacional de Desenvolvimento Científico e Tecnológico

A imagem da pessoa comum: sobre os filmes dos pontos de cultura de natal/rn

The following research aims to address the image of the ordinary person in the films of the Pontos de Cultura (Culture Points) in Natal-RN. About ten years the Federal Government of Brazil created the Cultura Viva (Living Culture) program. It enabled the State to support financially civil society organizations that had developed cultural works in communities across the country. Along with the resources the program developed, in parallel, another action, Cultura Digital (Digital culture), intended to bring the tools of digital technology for people who have never had access to them. As a result of these initiatives were produced short films. These films were characterized by the presence of the image of the ordinary person. The creation of this type of cultural product was benefited by state initiative, however, it was inserted within a historical, political and cultural construction whose research was necessary for this image understood to be understood by its importance: it is the expression of emancipation the ordinary person and not just as a consumer of culture, it identifies them as the protagonists of the society and recognizes their vital role in its organization

A legitimidade da jurisdição de primeiro grau na concretização dos direitos fundamentais: proposta de um novo modelo jurídico-administrativo para o segundo grau de jurisdição

The current study is about the legitimacy of lower court jurisdiction as a way of exercising basic legal rights, proposing, therefore, a new legal-administrative model for appellate court. In order to achieve that, a demonstration of the importance of basic legal rights in the Brazilian legal system and an open interpretation in light of the Constitution, as a way to affirm said rights, among which are accessibility to the justice system and proper legal protection, is required. As a result, the legitimacy to access the legal system resides in the Constitution, where the interpreter should seek its basic principles to achieve basic legal rights. It is observed that the lack of credibility regarding lower court decisions comes from the dogmatic view of truth born from power, and therefore, that the truth resides in decisions from appellate court and not from lower court judges. A lower court judge holds a privileged position in providing basic legal rights for citizens, considering his close contact to the parties, the facts, and the evidences brought forth. Class action suit is presented as an important instrument able to lead the lower court judge to provide basic legal rights. Small Claims Courts may be used as paradigm to the creation of Appellate State Courts formed by lower court judges, reserving to higher jurisdiction courts and Federal Circuit Courts, the decisions of original competency and the management and institutional representation of the judiciary system. Instilling an internal democratization of the judiciary is also required, which means the participation of lower court judges in electing their peers to chief positions in the court system, as well as establishing a limited mandate to higher court judges.

Ludopoiese e humanescência no educador infantil

This research has as study objective the development of humanescent experience in the process of self-formation of the teachers of the Infantile Educational Unit of the Education Center of the Federal University of Rio Grande do Norte. It has as general objective the description and analysis of how the humanscent experience of life contributes and is manifested in the children educator in his way of being, living and in his pedagogical practice. As specific objectives, the identification of the contributions of the humanescent experiences in the children educator in his way of being, living and in his pedagogical practice; the analysis of the contributions of the humanescent experiences to the children educator from the ludopoetic categories self-esteem, selfworth, self-realization, self-territory and self-connectivity. It is a descriptive study of qualitative nature understood as an existential action research that uses the principles and fundamentals of the etnomethodology and phenomenology. Sixteen teachers six that are effective teachers, six substitute teachers and 4 interns - took part in this investigation. Six humanescent experiences were carried out with them. As main tools we point out: the participative observation, the sand game, the photographic register and the semi-structured interview. The analyses were centered in the categories of the ludopoetic system, described above and referred to in the theoretical fundamentals selected for the study. From the analyses and to the answers to the objectives of the study, we make clear the following considerations: the reports of the teachers reveal that the humanescent experiences have contributed to make them more ludic, sensitive, emotional and lovely people, and this has reflected in their educational practice and has been making sense in their and their students lives. In this way, we make evident that the humanescent experiences have contributed to improve the ludopoesis of the teachers, revealing in the embodiment changes in their way of being, of living together and in their educational practice. In relation to the contributions of the humanescent experiences to the children educator from the ludopoetic categories self-esteem, selfworth, self-realization, self-territory and self-connectivity, we emphasize the following aspects: with the self-esteem, teachers have become more creative, rebuilding their possibilities of intensely experiencing the pleasure of living; in the context of selfterritory, the teachers have provided the realization of the wishes and expresson of oneself while lively interacting with the environment and with the other different territories of the educational process, in a continuous process of demarcation. Concerning the self-connectivity category, we emphasize that the teachers started to become more tuned with themselves, with the environment and with the other teachers because of the general well-being to the success of personal, pedagogical and institutional objectives, promoting a harmonic, lovely and ludic environment. Concerning the self-worth category, the teachers have valued the struggle for a school that is more committed with the search for happiness. From the self-realization, the teachers have shown self-recognition while ludic beings, playing with the beauty in their lives, allowing the flowing in its completeness, the other possibilities of analysis, the educational formation and development. We would like to emphasize that the considerations above are not over after what has been presented because of the richness of experiences revealed in the research

Qualidade de vida na perspectiva de idosos institucionalizados no Município de Natal - RN

A descriptive and exploratory Study, quantitative in nature, with the aim to assess the Quality of Life (QL) of the elderly leaving in a Long Residence Institution (LRI) according to their own perception. It was conducted in six Public Institutions of Long Residence for Seniors, in the municipality of Natal - RN, in the period of July to August 2007. The data was collected using two structured interview forms: the first, containing questions about socio-demographic aspects and the second - the WHOQUOL-OLD, prepared by the World Health Organization to assess elderly s quality of life. The reference population was 266 old persons, and a random sample, of 43, being 28 women and 15 men, who account for 30%. The results indicated there is a predominance of older women (65.1%) and the average age is 76.6 years; the predominant religion is the Catholic - 44.2% and, 32.6% are unmarried without children. As for schooling and precedence, 41.9% are illiterate and 67.4% come from the rural area. The time of residency in the institution goes between 1 to 5 years for 69.8% of the elderly, 37.2% of them residing in the institution for not having another option. Most elderly informed using medicines. 51.3% said they are taking anti-hypertensive. As for the other aspects of QL: sensory aspects, autonomy, past, present and future activities, social participation, death and dying and intimacy, the WHOQOL-OLD, showed an average total score of 52.9% (scale of 0 to 100), with a tendency to neutrality, denoting that the elderly, in this study, evaluated their QL as neither satisfactory or unsatisfactory. Of all the facets of the instrument of QL, the sensory facet secured the highest average scores (68,1%), showing that the elderly are "happy" in the situation in which they find themselves, not showing significant disabilities. The facet of autonomy, which refers to the independence and the ability to make decisions on their own life, received the lowest average scores (40.7%), showing the dissatisfaction of the elderly on this aspect. The evaluation of the elderly on other facets were: social participation (48.2%); activities past, present and future (44.6%) and intimacy (50.6%), all perceived as neither unsatisfactory or satisfactory. On the item death and dying, the elderly people declared themselves satisfied, with average score of 65.5%. The analysis of the reliability of the WHOQOL-OLD by the Cronbach Alpha showed 0.57, considering the 24 items that cover the instrument, showing regular internal reliability of the instrument, in our reality. The result is probably due to differences between the regions south and east and the broader sociocultural diversity. We believe that the elderly in this study, tended to realize their QL as neutral, considering it as neither unsatisfactory or satisfactory, result likely related to the resignation with the destine, characterized, at the time, by the finitude of life, feeling very common among elderly, or perhaps, even for an accommodation, often accompanied by discouragement, present in the daily life of many of them

Papéis e funções dos profissionais dos serviços e política de saúde mental em Natal (RN)

A assistência psiquiátrica e as políticas de atenção à saúde mental passaram por diversas transformações, marcadas ora por avanços, ora por retrocessos centrados no estigma, desinteresse e preconceito que ainda permeiam a sociedade e o senso comum. Este estudo objetivou analisar o processo de reforma psiquiátrica e a política de saúde mental do Município de Natal/RN a partir dos papéis e funções dos profissionais de nível superior dos serviços substitutivos em saúde mental. Trata-se de uma pesquisa analítica, transversal, com dados quantitativos e qualitativos, realizada nos sete serviços substitutivos de saúde mental de Natal, entre os meses de março a agosto de 2013, após aprovação do estudo pelo Comitê de Ética em Pesquisa da Universidade Federal do Rio Grande do Norte, Parecer nº 217.808, CAAE: 10650612.8.1001.5537, em 01 de março de 2013. A amostra por conveniência compôs-se por 65 profissionais de nível superior das equipes de saúde mental. Utilizou-se um questionário com questões fechadas e semiabertas sobre o perfil socioeconômico, as políticas, as práticas e a formação em saúde mental. Tabularam-se e submeteram-se as respostas das questões fechadas do questionário no programa estatístico SPSS versão 20.0, analisando-os por meio de estatística descritiva, com a formulação de gráficos e tabelas. Para verificar o nível de significância, adotando-se p-valor<0,05, optou-se pela aplicação dos testes qui-quadrado e exato de Fisher. Submeteram-se os dados das questões semiabertas ao software ALCESTE e à luz da análise de conteúdo de Bardin. O perfil dos participantes caracterizou-se por maioria do sexo feminino (79%), faixa etária de 36 a 55 anos (52%), média de 42 anos, carga horária de 40 horas semanais (62%), tempo de conclusão da graduação de 6 a 15 anos (57%), trabalhavam na área de saúde mental há menos de 10 anos (72%) e na instituição pesquisada há 5 anos ou menos (52%). Da amostra estudada, 86% atendiam grupos de usuários, 97% realizavam atendimento individual, 94% observavam o comportamento do paciente, 92% realizavam atendimento familiar, utilizando, principalmente, a abordagem cognitiva (28%). Os dados qualitativos originaram cinco categorias: Formação acadêmica e atuação em saúde mental; Ausência de capacitação e supervisão em saúde mental; Dificuldades da prática profissional nos serviços substitutivos de saúde mental; Trabalho em equipe: entre acertos e conflitos; Política Nacional de Saúde Mental: uma realidade ainda distante. Detectou-se adequabilidade dos papéis e funções dos profissionais quanto ao tempo de trabalho na saúde mental e na instituição pesquisada; no atendimento e atividades individuais; na promoção de ações visando à autonomia do paciente; no atendimento em grupo de pacientes; e, em parte, à família/familiar dos portadores de transtorno mental, havendo inadequação quanto ao atendimento aos grupos de familiares (52.3%), à formação especializada em saúde mental (69.2%; p=0,02) e às dificuldades de trabalho nos serviços (87.7%). Evidenciou-se adequação nos papéis e nas funções d esenvolvidas pelos profissionais nos serviços substitutivos em saúde mental de Natal, embora convivendo em seu cotidiano com inúmeras dificuldades encontradas no desenvolvimento de suas práticas profissiona is frente às condições de trabalho