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Dias P.M.S.,UERN | Diodato M.A.,Rural University | Grigio A.M.,Grande Rio University
Revista Caatinga | Year: 2014

The municipal district of Mossoró-RN is inserted into the Caatinga biome and like other coun-ties its vegetation is notably mischaracterized. Thus a phytosociological study of forest remnants was conduct-ed in Mossoró, seeking knowledge of forest wealth for possible conservation. Bibliographic and cartographic materials were consulted, as well as maps were used for better spatial visualization of forest remnants. Areas where there are forest remnants were highlighted and four sites were chosen to characterize the vegetation. At these sites, the phytosociological study was conducted by installing plots of 20 x 20 m, within which were esti-mated height and diameter at breast height (DBH) of all living individuals of the shrub and herbs layers. The phytosociological parameters considered were: Margal ef and Menhinick Diversity Index, Frequency, Density, Dominance and Coverage and Importance Percentage Index. It was found that Poincianella pyramidalis (Tul.) and Croton sonderianus Mull. Arg. have excelled in number of individuals, frequency and density. Poincianel-la pyramidalis (Tul.) was the one that stood out in most of the analyzed parameters. Species that stand out in an area are found at low frequency in the other. This variation can be probably explained by several factors, one of them may be the anthropic level among the studied areas. Diversity indices indicated that Point 4 showed the greatest diversity and the lowest point 3. However, the Caatinga vegetation of the areas analyzed has low diver-sity, probably by the effects of human disturbance, but with proper planning and managements could avoid its complete disappearance. © 2014, Universidade Federal Rural do Semi-Arid. All rights reserved.


De Araujo A.A.,Federal University of Rio Grande do Norte | Do Nascimento G.G.,UERN | Ribeiro S.B.,Federal University of Rio Grande do Norte | Chaves K.M.,Federal University of Rio Grande do Norte | And 5 more authors.
Psychiatric Quarterly | Year: 2014

This cross-sectional study compared the effects of treatment with atypical antipsychotic drugs on quality of life (QoL) and side effects in 218 patients with schizophrenia attending the ambulatory services of psychiatric in Rio Grande do Norte, Brazil. Socio-economic variables were compared. The five-dimension EuroQoL (EQ-5D) was used to evaluate QoL, and side effects were assessed using the Udvalg for Kliniske Undersøgelser (UKU) Side Effect Rating Scale and the Simpson-Angus Scale. Data were analysed using the χ2 test and Student's t test, with a significance level of 5 %. Average monthly household incomes in the medication groups were 1.1-2.1 minimum wages ($339-$678). UKU Scale scores showed significant differences in side effects, mainly, clozapine, quetiapine and ziprasidone (p < 0.05). EQ-5D scores showed that all drugs except olanzapine significantly impacted mobility (p < 0.05), and proportions of individuals reporting problems in other dimensions were high: 63.6 % of clozapine users reported mobility problems, 63.7 and 56.3 % of clozapine and ziprasidone users, respectively, had difficulties with usual activities, 68.8 and 54.5 % of ziprasidone and clozapine users, respectively, experienced pain and/or discomfort, and 72.8 % of clozapine users reported anxiety and/or depression. Psychiatric, neurological, and autonomous adverse effects, as well as other side effects, were prevalent in users of atypical antipsychotic drugs, especially clozapine and ziprasidone. Olanzapine had the least side effects. QoL was impacted by side effects and economic conditions in all groups. Thus, the effects of these antipsychotic agents appear to have been masked by aggravating social and economic situations. © 2014 Springer Science+Business Media.


Galvao S.B.,Federal University of Rio Grande do Norte | Lima A.C.,Campus Universitario Lagoa Nova | De Medeiros S.N.,Campus Universitario Lagoa Nova | Soares J.M.,UERN | Paskocimas C.A.,Federal University of Rio Grande do Norte
Materials Letters | Year: 2014

Rod, platelet and ellipsoidal nanostructures of BaFe12O 19 have been synthesized by the Pechini method followed by heat treatment. The produced samples were heat treated at 900 C for different hours and characterized by X-ray diffraction, scanning electron microscopy, Mössbauer spectroscopy and vibrating sample magnetometry. The results showed that the particle size and morphology vary with the time of heat treatment. The samples consisting of nanoparticles with different morphologies exhibited plateaus in the magnetic hysteresis loops. © 2013 Elsevier B.V.


De Sousa R.R.M.,Grupo de Pesquisa em Materiais e Metrologia | De Araujo F.O.,Rural University | Gontijo L.C.,Federal University of Espirito Santo | Da Costa J.A.P.,UERN | Alves C.,Campus Universitario
Vacuum | Year: 2012

In this study, we assess how the ratio (N 2/H 2) - working atmosphere gas mixture - influences the properties of the layers produced on austenitic stainless steel surface by Cathodic Cage Plasma Nitriding (CCPN). The nitriding atmospheres contained nitrogen and hydrogen in three proportions: 20% N 2 + 80% H 2, 50% N 2 + 50% H 2, and 80% N 2 + 20% H 2 delivered at a flow rate of 20 sccm. The effect of 100% N 2 was also examined. The morphology, microstructure and electrochemical properties of the layer produced were studied. The samples characteristics were determined by optical microscopy, x-ray diffraction, microhardness test and electrochemical potential curves. © 2012 Elsevier Ltd. All rights reserved.


de Araujo Jr. H.I.,Federal University of Rio de Janeiro | Porpino K.O.,UERN | Bergqvist L.P.,Federal University of Rio de Janeiro
Revista Brasileira de Paleontologia | Year: 2011

In this work, the first occurrence of carnivore/scavenger teeth marks on Pleistocene fossil mammals collected in the Northeastern Brazil is reported. The fossils are from the "Tank of the Jirau", Itapipoca municipality, Ceará State, and are housed in the Museu de Pré-história de Itapipoca. The observed features, which are assigned to a largesized canid, correspond to scratches marks mostly perpendicular to the long axis of the bone, occurring mainly in ribs, vertebrae, tibiae and ulnae. Based on the size of the scratches, the geographical distribution and dietary habits of canids from the Late Pleistocene of Brazil, Protocyon troglodytes (Lund) is the most likely producer of the observed features, although this taxon is not represented in the Jirau fossil accumulation. © 2011 by the Sociedade Brasileira de Paleontologia.


Xavier Jr. J.C.,Federal University of Rio Grande do Norte | Signoretti A.,UERN | Canuto A.M.P.,Federal University of Rio Grande do Norte | Campos A.M.,Federal University of Rio Grande do Norte | And 2 more authors.
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2011

This paper proposes the use of a multi-agent system (MAS) with affective agents in a recommendation system based on relational data clustering. This MAS works as a mediator between the user and the data stored in the system. In the proposed system, after logging in, each user will have an affective agent, called Interface agent, for interaction purposes. This agent models the user's data requests according to the user's profile and its affective status, sending it to the Recommender agent, which recommends a set of map points to be visualized. The system analyzes the user's feedback in order to verify whether the recommended information was satisfactory. This feedback is analyzed through the monitoring of the interaction interface.. © 2011 Springer-Verlag Berlin Heidelberg.


Silva A.S.M.,UERN | Silva A.S.M.,Federal University of Rio Grande do Norte | Dantas A.L.,UERN | Rebouas G.O.G.,UFERSA | Carrio A.S.,Federal University of Rio Grande do Norte
Journal of Applied Physics | Year: 2011

We report a theoretical investigation of interface effects in the magnetic order of interface biased iron and Permalloy elliptical nano-elements. Contrary to intuition, there is a partial pinning of the interface layer, favoring double vortex states along the hysteresis loop. Interface biasing affects the relative chirality and the distance of the vortices. Unbiased nanoelements may nucleate vortex pairs with the same chirality separated by an antivortex. For interface biased nanoelements the vortex pair forms with opposite chirality separated by a magnetic domain. © 2011 American Institute of Physics.


Sales F.H.S.,IFMA | Dantas A.L.,UERN | Carrico A.S.,Federal University of Rio Grande do Norte
AIP Advances | Year: 2012

We report a theoretical investigation of new spin slips phases of thin holmium (Ho) films. The new phases originate from the loss of coordination of atoms in the near surface region, which affects the balance between exchange and anisotropy energies, favoring the alignment of near surface spins along the basal plane easy axis directions. Copyright 2012 Author(s).


Moreira J.N.,UFERSA | Silva P.S.L.,UFERSA | Silva K.M.B.,UERN | Dombroski J.L.D.,UFERSA | Castro R.S.,UFERSA
Horticultura Brasileira | Year: 2010

Three experiments (E1, E2, and E3) were carried out in Mossoró, Brazil, to evaluate baby corn yield, green ear yield, and grain yield, respectively, of two corn hybrids (AG 1051 and BRS 2020), in response to detasseling (with or without tassel). A randomized split-plot block design (with hybrids defined as plots) and ten replicates was used. The three experiments were planted on the same day and in neighboring areas. In the three experiments, the hybrids did not differ from each other on the dry matter mass and number of tassel branches. In E1 (baby corn production at 180 thousand plants ha -1), for both hybrids, the following effects were observed due to detasseling: a) an increase in ear total number, in ear total weight, in marketable unhusked ears number and in marketable unhusked ears weight; b) no change was observed in the number and weight of marketable husked ears. Hybrid AG 1051 was superior to BRS 2020 for weight of marketable husked ears, but the two hybrids did not differ in other traits utilized to evaluate baby corn yield. In E2 (green ear yield at 50 thousand plants ha -1), detasseling did not change the following traits in both hybrids: total number and weight of ears; number and weight of marketable unhusked ears and marketable husked ear weight. Detasseling reduced the number of marketable husked ears in cultivar AG 1051, but not in BRS 2020. The two hybrids did not differ in total number of ears and number of marketable unhusked ears. Hybrid AG 1051 was superior to BRS 2020 in regard to the total ears weight, marketable unhusked ears weight and number and weight of marketable husked ears. In E3 (grain yield at 50 thousand plants ha -1), detasseling did not affect grain yield (RG) and hybrid AG 1051 was superior to BRS 2020 for grain yield.


PubMed | Hospital E Maternidade Venancio Raimundo Of Sousa, State University of Rio Grande do Norte and UERN.
Type: Journal Article | Journal: Investigacion y educacion en enfermeria | Year: 2015

To understand the needs and health profile of men incarcerated in the Pau dos Ferros Regional Criminal Complex (Rio Grande do Norte, Brazil).Quanti-qualitative research conducted with 30 men incarcerated in November 2012. Semi-structured interviews were the primary data collection method. Descriptive statistics and thematic analysis of the speeches were used for data analysis.The participants health profile, resulting from deficits in living conditions prior to their imprisonment, is heightened by the degrading conditions of their prison stay, and plays a role in their exclusion and lack of care when admitted as prisoners. The disorders and symptoms most often self-reported by participants were: headache (86.6%), respiratory infections (66.6%), diarrhea (60.0%), stress (60.0%), and depression or deep sadness (56.6%). The responses showed that there is a social gap, especially related to health care, in the prison complex.We recognize a need to ensure the physical and moral integrity of inmates, which is compromised by life in prison; the inmates health problems and needs differ from those of the general population, and require solutions; the inmates health-disease process deteriorates due to the mere situation of entering the prison system; the inmates health problems and health needs are treated with palliative and / or no assistance by those legally responsible for their protection; few human and financial resources exist to ensure health actions for the inmates; and there are no interventions or actions of disease prevention and health promotion.

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