Identificação de áreas com precipitação pluvial homogênea no Estado do Rio Grande do Norte

O estudo da variabilidade da precipitação é importante para o planejamento das atividades econômicas, possibilitando o uso mais eficiente e racional dos recursos hídricos. Dessa forma, o objetivo desta pesquisa é caracterizar o estado do Rio Grande do Norte com relação à variabilidade temporal da precipitação, agrupá-lo em regiões homogêneas e comparar diferentes técnicas de agrupamento. Para o estudo da variabilidade pluvial foram utilizados os índices: Grau de Concentração de Precipitação (PCD), que representa o grau em que a precipitação é distribuída ao longo do ano; e o Período de Concentração de Precipitação (PCP), que reflete o período no qual a precipitação está mais concentrada. Para a realização dos agrupamentos foram escolhidas as variáveis: PCD, PCP, médias da precipitações anuais e médias das precipitações mensais. Posteriormente, foi aplicada a análise de agrupamento para obter grupos com características similares. Os resultados mostraram que as precipitações são melhor distribuídas na região leste do estado, neste caso, os meses mais chuvosos são de maio a agosto. Os municípios localizados nessa área possuem dois picos de chuvas, devido à atuação de dois sistemas: Perturbações Ondulatórias dos Alísios (POA s) e Zona de Convergência Intertropical (ZCIT). Nas regiões localizadas a oeste os meses que possuem maior concentração de chuvas são março e abril, neste caso temos apenas um pico de precipitação, devido a atuação da ZCIT. A identificação de áreas homogêneas favorece o planejamento adequado de acordo com as características de cada grupo formado e o RN pode foi dividido em 4 (quatro) regiões homogêneas. As técnicas de agrupamento utilizadas apresentaram resultados semelhantes, porém, sugere-se o uso de mais de uma técnica para que se possa analisar qual delas reflete melhor a realidade local. O estudo da variabilidade de precipitação, através dos índices estudados e do agrupamento realizado, são ferramentas adequadas ao planejamento ambiental e econômico

A fotossíntese vegetal no 3º ano do Ensino médio: concepções alternativas, erros conceituais e uma proposta de unidade didática baseada no Desenvolvimento Sustentável.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Saberes de astronomia no 1º e 2º ano do ensino fundamental numa perspectiva de letramento e inclusão

This work suggests a discussion about methodologies and didactic-pedagogical activities for the teaching of Astronomy in first and second cycles of the primary school, in a perspective of literacy and inclusion. The presented proposals have been developed in a group of the Public School Alceu Amoroso Lima, North of Natal city, with children since six years old, amongst which two considered as being with special needs . This research aims to demonstrate that it is possible to develop with those children the contents of Astronomy, while they participate of the process of literacy and inclusion. From this, we are searching a theoretical-practical contribution so that the Parâmetros Curriculares Nacionais (Brazilian Nacional Curricular Guideness) include the referred contents in first cycle of primary school. For the accomplishment of this research, Experiential Astronomy was initially proposed. Later on, many workshops had been carried through (clay, ripping , crepon paper, plasticine, cardboard and gastro-lunar ). All the proposed activities were based on the conjunction of contents, which characterized the interdisciplinarity. Through the approach we adopted and the practices we proposed, we could evidence that not only children considered as being normal , but also that ones who carries special needs could appropriate themselves of our writing code, develop and incorporate a daily relationship close to the stuffs of the sky, learn many information about all of this, besides constructing attitudinal, procedural and conceptual contents

Um estudo no contexto da produção textual de um 9° ano do ensino fundamental

Cette recherche s'inscrit dans la linguistique de texte et vise à identifier, décrire, analyser et interpréter les événements de l'anaphore pronominale et de la répétition, exposer le montant et le pourcentage dês phenoménes respectifs dans Le corpus étudiés, que l accent sur le fonctionnement cohérente de ces phénomènes dans la construction du texte en termes de continuité et de progression thématique. Nous avons utilisé des procédures ethnographiques pour construire notre corpus d'enquête, composé essentiellement de textes produits par les étudiants de 9 ans d'école élémentaire de l'Etat, a la ville de Santa Cruz / RN. La recherche a été menée à partir des études sur l'anaphore pronominale faites par Milner (1982), Koch e Marcuschi (1998), Marcuschi (2000; 2005 e 2008), Koch (2002), Antunes (2005) e Adam (2008), et par des études sur la répétition présentés par Halliday e Hassan (1976), Beaugrande e Dressler (1997), Marcuschi (1992) et Antunes (2005). Comme le support technique, ont également utilisé les notions de cohésion définis par Halliday e Hasan (1976), Beaugrande e Dressler (1997), Marcuschi (2008) e Koch (2003). Dans l'analyse des textes, nous avons constaté que l'incidence de l'anaphore pronominale et de la répétition a été importante parce que les ressources étaient principalement utilisés par les étudiants pour promouvoir l'articulation cohérente des textes. Constaté que dans les textes narratifs ou argumentatifs anaphore pronominale promu l'entretien et la progression thématique prévu. Sur la répétition, nous avons observé que le maintien et la progression thématiques ont été conditionnés à la connaissance du sujet en discussion. Même si nous avons constaté que la répétition excessive de ces phénomènes dans le même texte, bien que la relation de promouvoir la cohésion, peut affecter le degré de caractere informatif

Autoria e escrita: uma reflexão acerca do autorar em memórias de leituras de alunos de 9º ano do ensino fundamental

This paper presents results concerning studies conducted during the master's research in the area of Applied Linguistics of the Graduate Program in Language Studies - PPgEL, linked to the Federal University of Rio Grande do Norte. We approached this study the question of authorship, which has gained ground increasingly important in academic research, because the act of authoring, in view of the amount of circulating discourses socially, becomes increasingly questionable. We understand authorship as related to a positioning of the subject than to take responsibility, in the Bakhtinian sense, by its text, it makes their views, ideologies, beliefs and values, from ownership and restructuring of the speech of others. This research is methodologically inserted in a qualitative, interpretive in nature and has a corpus analysis of the ten productions written memoir genre of readings produced by students in 9th grade in elementary school. Research aimed to analyze the students' written productions held in the school environment, to identify these texts marks or evidence of authorship and investigate how the restructuring of ownership and voices of others in the process of authoring. We adopt a concept of language from bakhitinianas concepts and understand the text in a vision Geraldiana. The analyzes in this study showed that in most texts there is the strong presence of voices of others, either implicitly and/or explicit. That is, students, to build their sayings, if embraced the voices of others in various formats, in particular styles, namely, by what Bakhtin names as linear style and pictorial style. Some proved his statement highlighting their positions through direct quotes from authors of books, family, teachers, showing us that their voices are filled with voices of others with whom they approve, deny, analyze, think and reflect. We therefore conclude that students were constituted as subjects of their texts, authors, since they leave marked the voices of others so presentified and restructured voices of others who do not actually sounded like voices of others, but as present voices from a discursive restructuring producer

Entre o sagrado e o profano: os efeitos de sentido revelados nos testemunhos de um blog evangélico

The testimonial is a way of statement that demonstrates or admit the existence of a reality with which the enunciator has contacted. This is, thus, pushed to say what he saw, heard or touched. In this paper, we verified the effects of senses produced in the blog of Bishop Macedo, founder of the Universal Church of the Kingdom of God (UCKG), from a corpus which consists of nine testimonies of presumed believersselected among 64 statements distributed during the year, 2012. Instead of instantaneous testimonials, on a live presentation, these media narratives are underpinned by attributes such as hyperlinks, visuals, language translators, besides mechanisms of interaction and sharing in other spheres from mediatic slant. The problem of this analysis was born from the observation of regular points in the discursive architecture of these testimonials, when was identified the existing relation force between the sacred and the profane, everyday practices. During six months, analysis of the empirical material, we found some effects of the senses on the testimonials, as the dialectic structure and the need for denuding a precarious past, an engagement to shield the figure of Macedo and the UCKG towards society; a update of a crusade against other religions; and the presence of certain sensuality in self-deprecation of the deponents, and an unequal relation of forces (sacred and profane) in the construction of truth. In order of succeeding in this investigation, we used the theoretical and methodological assumptions of Analysis of French Discourse (AD), denouncing the qualitative nature of the research. As a methodological principle, we still use transdisciplinarity, which validated some of our dialogues, especially with philosophy. The conception of discourse modeled by a media support and transpassed by the subject(s) and story (ies) characterized the perspective of the research

Eficácia do cimento de ionômero de vidro como selante oclusal sobre a paralisação de lesões cariosas em dentina

Dental caries consists in a multifactorial and dynamic process. The knowledge of the ionic interactions among dental tissues and dental biofilm make possible its understanding as a process that can be stopped. Recently, the use of sealants have lost its function as preventive agent and passed to be argued as a possible therapeutical agent. This happens by hindering the substratum flow to the lesion inner and, therefore, controls the advance of the process. This study aimed to evaluate glass ionomer cement as a not invasive technique of treatment in occlusal caries without clinical cavitation, but with dentinal involvement. The research was accomplished using a controlled clinical trial with two groups (experimental and control) in 38 subjects (8-18 years) with 51 molars. The teeth of the experimental group were sealed with glass ionomer cement (Vidrion-R, S.S.White, Juiz de Fora, Brazil) and the molars control did not suffer intervention. The experimental group was followed by a year and the control by 8 months due the progression of the carious injury. Both groups were reevaluated to each 4 months with the use of clinical, radiographic and laser fluorescence (DIAGNOdent®) examination. The analysis of the clinical evaluation did not observe a significant difference between experimental and control groups. However, analysis with radiographic and laser fluorescence (DIAGNOdent®) examination observed a significant difference (p> 0,05) between groups, demonstrating a wors condition to the group without intervention. The results suggest that glass ionomer cement as sealant can be efficient to paralyze dentinal caries without clinical cavitation

Avaliação clínica longitudinal do periodonto de dentes pilares e não pilares de próteses parciais removíveis

The literature has shown a relation between periodontics and the removable partial denture (RPD), with progressive destruction observed in the support structures. The aim of this study was to clinically assess periodontal condition in users of removal partial denture (RPD), and compare right abutments teeth, indirect abutments and controls before installation and after 1 year, in addition to comparing tooth-supported and tooth mucosa-supported abutments. A total of 50 patients, 32 women and 18 men, mean age of 45 years, took part in the study. The patients were examined by a single examiner at prosthesis installation and after 3, 6, 9 and 12 months. The following were verified at each examination: Probe Depth (PD), Plaque Index (PI), Gingival Index (GI), the amount of Keratinized Mucosa (KM), Gingival Recession (GR) and Dental Mobility (DM); in addition patients received oral hygiene orientation, accompanied by prophylaxis, periodontal scaling and root planing (PSRP), when necessary. Analysis of Variance (ANOVA) with Tukey-Kramer post test was used to assess the dependent variables (PD, PI, KM, GR) of the three groups over time while Friedman s test was used for GI. To assess the outcomes of prosthesis type in the right abutment group, a confidence interval-based analysis was performed. The results showed that the control group was the least compromised in all the variables studied. With respect to development of the groups over time, it was verified that the measures for GR, PD, GI and KM increased from initial examination to 1 year of use in all the groups, but only PI showed a significant increase. There was a non-discriminatory low prevalence of dental mobility. The tooth mucosa-supported prosthesis had significantly higher values for GR, GI and PI and significantly lower ones for KM when compared to tooth-supported. Over time, both types of prostheses showed no significant differences from initial to final examination for the variables GR, PD, KM and GI, with PI significant only for tooth-supported. The results showed that the teeth most involved in RPD design had greater potential of periodontal damage, probably because of greater dental biofilm accumulation. Abutments elements adjacent to the free extremities had less favorable periodontal condition than those adjacent to interpolated spaces, but the use of RPD did not worsen the initial condition

Avaliação genética da eficiência reprodutiva em vacas pardo-suíças por meio da análise de sobrevivência

Among the traits of economic importance to dairy cattle livestock those related to sexual precocity and longevity of the herd are essential to the success of the activity, because the stayability time of a cow in a herd is determined by their productive and reproductive lives. In Brazil, there are few studies about the reproductive efficiency of Swiss-Brown cows and no study was found using the methodology of survival analysis applied to this breed. Thus, in the first chapter of this study, the age at first calving from Swiss-Brown heifers was analyzed as the time until the event by the nonparametric method of Kaplan-Meier and the gamma shared frailty model, under the survival analysis methodology. Survival and hazard rate curves associated with this event were estimated and identified the influence of covariates on such time. The mean and median times at the first calving were 987.77 and 1,003 days, respectively, and significant covariates by the Log-Rank test, through Kaplan-Meier analysis, were birth season, calving year, sire (cow s father) and calving season. In the analysis by frailty model, the breeding values and the frailties of the sires (fathers) for the calving were predicted modeling the risk function of each cow as a function of the birth season as fixed covariate and sire as random covariate. The frailty followed the gamma distribution. Sires with high and positive breeding values possess high frailties, what means shorter survival time of their daughters to the event, i.e., reduction in the age at first calving of them. The second chapter aimed to evaluate the longevity of dairy cows using the nonparametric Kaplan-Meier and the Cox and Weibull proportional hazards models. It were simulated 10,000 records of the longevity trait from Brown-Swiss cows involving their respective times until the occurrence of five consecutive calvings (event), considered here as typical of a long-lived cow. The covariates considered in the database were age at first calving, herd and sire (cow s father). All covariates had influence on the longevity of cows by Log-Rank and Wilcoxon tests. The mean and median times to the occurrence of the event were 2,436.285 and 2,437 days, respectively. Sires that have higher breeding values also have a greater risk of that their daughters reach the five consecutive calvings until 84 months

Avaliação da resposta comportamental, morfofisiológica e produção de leite de cabras puras e mestiças da raça Saanen no semi-árido do Rio Grande do Norte

Goat breeding in the state of Rio Grande do Norte, Brazil has promising economic possibilities, with the proper handling of the natural resources. The introduction of specialized animals has been one of the ways used to improve herd genetics and increase productivity. However, climate has been one of the regional factors that most interferes with the adaptation of the new genetic prevalence resulting from the introduction of exotic breeds, because in their country of origin, the air temperature during most of the year is lower than the animals body temperature. With this in mind, the aim of this study was to characterize behavioral, physiological and morphological profiles and milk production of female Saanen goats belonging to different genetic groups raised in the semi-arid region of Rio Grande do Norte in Northeast Brazil. The study was conducted in the city of Lages (5° 42 00 S and 36° 14 41 W). We used 25 lactating female Saanen goats, distributed into 3 genetic groups: 5 purebred animals, 11 three-quarter bred and 9 half-bred. Behavioral observations were made over three consecutive days in the months of August and September, between 09:00 and 11:30h, when the animals were grazing. Physiological and meteorological data were recorded in the last three days of June, July, August and September at 05:00h and at 16:00h. In the semi-intensive breeding system, the animals from different genetic groups were similar in both field behavior and physiological response patterns. Although the purebred goats had longer hair, they did not show symptoms of thermal discomfort. Their white hair helped to reflect the short wavelength rays and thus eliminate those at the longer wave lengths. We concluded that the animals raised in the semi-intensive milk production system in this study seem to have adapted to the climatic conditions of the semi-arid region of Rio Grande do Norte, Brazil

Perfil hormonal anual de machos e fêmeas adultos de saguis (callithrix jacchus)

Many behavioral and biological variables of animals are expressed in the form of biological rhytms, down by the Circadian Timing System, that synchronize them with the environment from external stimuli such as light. One of them is the secretion profile of most circulating hormones regulated by the hypothalamuspirtuitary axis, which controls functions essential for the survival and reproduction of organisms. The sagüi, Callithrix jacchus, one of the most studied species about their endocrine physiology, is an appropriate subject for evaluating the profile of plasma prolactin and cortisol of adult males and females born in captivity throughout the year. Three male and two adult femelas were housed individually and subjected to natural environmental conditions over two years. Blood samples were used to measure the circulating levels of both hormones by methods radioimmunoassay (RIA) and immunoassay (ELISA), respectively. The analysis during the year of the plasmatic values of both hormones test was performed by ANOVA for repeated measures, the correlation of Spearman, and the test of Friedman and Student's t-test. The levels of prolactin in plasma were higher during the months in which there is a greater incidence of births of baby in the colony, possibly serving for modulating the expression of the behavior of parental care in both sexes. The plasma cortisol showed a lift in anticipation of the station with the highest birth rate and may be associated with the preparation of individual participation in caring for the baby, and also with the establishment of emotional bond between reproductive partners. Thus, this study shows that, despite the variations observed in the environment in which the animals live, plasma levels of prolactin and cortisol vary little throughout the year.

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

Pistas orgânicas: uma atividade lúdica para o ensino das funções orgânicas

Educational games can work as a complementary tool in teaching and learning chemistry, playing an important role in the development of the students cognitive structures, familiarizing them with certain conceptual content, which may arouse interest in the study of such content. In this work, we made an analysis of organic chemistry textbooks recommended by Programa Nacional do Livro Didático 2012, for high school students in order to verify the existence of methodological proposals using educational games. From this analysis, we proposed an educational game to be developed for students on 3º year of high medium and undergraduate chemistry, that are in 1º semester of the course, which is constituted of a tray and 48 letters, which work various concepts concerning organic functions, such as: structural characteristics, physical properties, chemical and properties diverse of the compounds used for the confection of the letters. The game was applied to a class degree in chemistry, period 2012.1 to a Federal Education of Rio Grande do Norte and a group of students of the 3rd year of the state schools of Rio Grande do Norte, in the period the months of April and May 2012. The analysis of the performance of the game proposed was made using visual observations, photographic records and testimonials of students who participated in the games. The instrument used for the data collection was the student questionnaire, which was similar for both groups, differing only in the amount of questions, because one of them had one more question. During application of the game it was observed that it constitutes a dynamic strategy in the teaching and learning of chemistry concepts, given that students actively participated in the classes as well, demonstrated more motivation in the construction of concepts, furthermore, it was possible to observe evidence of other possibilities of the game. This could be verified through visual observations and testimonials at the end of each game, by reading the answers to the questionnaires

Falhas e complicações com o uso de prótese parcial removível inferior de extremidade livre bilateral

Aim: To determine the frequency and type of complications related to removable partial denture (RPD) less, Kennedy Class I, over time . Materials and Methods: This observational study consisted of a sample of 65 users PPR lower arches in Kennedy Class I and dentures, rehabilitated in the Department of Dentistry, Federal University of Rio Grande do Norte (UFRN). Patients were followed through periodic controls during periods of 60 days, 6 months and 1 year from installation. After the first year of control had other returns annually. The occurrence of complications or prosthetic failure was observed and recorded in a specific clinical record over 39 months. The patterns of failures observed were classified in the following situations: occurrence of traumatic ulcers after 2 months of installation, lack of retention, fracture or caries in the rest, fracture or dislocation of the artificial teeth, the larger connector fracture, fracture clip fracture support, poor support (need to reline the denture) and prosthesis fracture. Results: The incidence of complications was low frequency, being higher in the second year of use of the prosthesis. Among the complications that occurred more is the loss of retention (31.57%). Failures more severe and difficult to solve as the fracture elements of the metal structure of the PPR had low occurrence and were represented by only one case of the larger connector (5.3%) fractures. Conclusion: Removable partial dentures mandibular free end opposing of the conventional dentures have a low complication rate after 39 months of use when subjected to periodic controls

Avaliação da satisfação das usuárias sobre a atenção à saúde da mulher no Rio Grande do Norte

This work discusses the evaluation of the satisfaction of the users on the women health care focusing on the quality of the primary care in the State of Rio Grande do Norte-BR. The main objective of this research is evaluate the satisfaction of the users about the actions applied to women health in the primary health care in Rio Grande do Norte, observing the information available through the Programa de Melhoria do Acesso e da Qualidade da Atenção Básica (PMAQ-AB). The specific objectives are: the evaluation of aspects related to women health; the evaluation of the specific actions related to welcoming the pregnant and; the evaluation of the information related to the postpartum. This dissertation is characterized as an evaluative research made through a multicentric transversal study, using a quantitative approach, which is part of the External Evaluation of the PMAQ-AB in the State of Rio Grande do Norte, made by the Federal University of Rio Grande do Norte. Some secondary data of the interviews with the users who were in the Basic Health Units were used during the External Evaluation of the PMAQ-AB in Rio Grande do Norte. The sample was collected following these criteria: the users that were in the Basic Health Units to attend to any procedure; they must had used the services for at least one year; and they must had agreed to participate the research. The ones that were attending to the services for the first time and the ones that did not use the services for at least 12 months were excluded from the sample. To the data collection it was used a chart of variables/indicators with the following information to the analysis: Women Health Care, Specific Care of the Pregnant and Information about he postpartum. The descriptive analysis of the data were made through absolute and relative frequencies of the variables using the software Statistic Package for Social Sciences (SPSS) for Windows, version 22.0.0. The results show a positive picture of the satisfaction of the users about the actions of the primary healthcare in women health in the State of the Rio Grande do Norte. Another important analysis is the integration of the primary health care with other points of the Healthcare System aiming to reorient the Model of Healthcare as a starter of the access and quality of the services given to the users. Therefore, the evaluation of the satisfaction of the users in health care is essential among all the agents involved in the process of consolidation of the Unified Health System SUS. Also having the need of rethinking the professional practice, reorganizing the processes of work of the multiprofessional teams in health care, enabling financial resources, inputs and materials, planning and systematizing new actions of healthcare aiming to ensure a perfect health care to the people