Análise dos microssismos registrados no arquipélago de São Pedro e São Paulo (ASPSP) e suas relações com variáveis oceanográficas

Microseisms are continuous vibrations pervasively recorded in the mili Hertz to 1 Hz frequency range. These vibrations are mostly composed of Rayleigh waves and are strongest in the 0.04 to 1 Hz frequency band. Their precise source mechanisms are still a matter of debate but it is agreed that they are related to atmospheric perturbations and ocean gravity waves. The Saint Peter Saint Paul Archipelago (SPSPA) is located in the equatorial region of the Atlantic Ocean about 1,100 km distant from the Brazilian northeastern coast. The SPSPA is composed by a set of several small rocky formations with a total area of approximately 17,000 m². Due to its remote distance from the continent and the lack of cultural noise, this location is a unique location for measuring microseismic noise and to investigate its relation with some climate and oceanographic variables. In the SPSPA we have recorded both primary microseisms (PM) at 0.04 – 0.12 Hz and the secondary microseisms (SM) at 0.12 – 0.4 Hz during 10 months in 2012 and 2013. Our analysis indicates a good correlation between the microseismic noise in the region and a seasonal dependency. In particular, the winter in the northern hemisphere. We have also shown that most of the PM is generated in the SPSPA itself. The SM source location depends with the seasonal climatic and oceanographic variables in the northern hemisphere

Indicadores do nível relativo do mar e evolução costeira durante o holoceno tardio no litoral oeste do Ceará, NE do Brasil

In the coastal region of Ceará, between the municipalities of Acaraú and Itapipoca, thirteen sites were identified containing indicators of relative sea level, six of these being dated by optically stimulated luminescence (OSL) and radiocarbon. Ages obtained supports that were formed prograding beaches in the study area. In the eastern portion, beaches in coastal plain deposits occur while a system lagoon/barrier paleomangrove occurs in the western portion of the study area. In both cases the coastal deposits prograde from east to west. Higher sea levels were identified between the current: (a) 3.110-2.830 cal. yr. BP; (b) 1.830 yr. BP (OSL) - 1.490 cal. yr. BP; (c) between 1.240-1.060 cal. yr. BP; (d) 845-715 yr. BP (OSL). Since then the sea level suffered by lowering the current level. Variations in sea level are interpreted as responses to changes in the pattern of marine circulation and do not exclude possible tectonic disturbances in the basin of the continental margin. The indicators of relative sea level west coast of Ceará present differently from other curves constructed in the coastal northeast, suggesting that local factors mentioned above contributed to sea level fluctuations.

Estudo da estrutura subsuperficial da província Borborema com correlação de ruído sísmico

Ambient seismic noise has traditionally been considered as an unwanted perturbation in seismic data acquisition that "contaminates" the clean recording of earthquakes. Over the last decade, however, it has been demonstrated that consistent information about the subsurface structure can be extracted from cross-correlation of ambient seismic noise. In this context, the rules are reversed: the ambient seismic noise becomes the desired seismic signal, while earthquakes become the unwanted perturbation that needs to be removed. At periods lower than 30 s, the spectrum of ambient seismic noise is dominated by microseism, which originates from distant atmospheric perturbations over the oceans. The microsseism is the most continuous seismic signal and can be classified as primary – when observed in the range 10-20 s – and secondary – when observed in the range 5-10 s. The Green‘s function of the propagating medium between two receivers (seismic stations) can be reconstructed by cross-correlating seismic noise simultaneously recorded at the receivers. The reconstruction of the Green‘s function is generally proportional to the surface-wave portion of the seismic wavefield, as microsseismic energy travels mostly as surface-waves. In this work, 194 Green‘s functions obtained from stacking of one month of daily cross-correlations of ambient seismic noise recorded in the vertical component of several pairs of broadband seismic stations in Northeast Brazil are presented. The daily cross-correlations were stacked using a timefrequency, phase-weighted scheme that enhances weak coherent signals by reducing incoherent noise. The cross-correlations show that, as expected, the emerged signal is dominated by Rayleigh waves, with dispersion velocities being reliably measured for periods ranging between 5 and 20 s. Both permanent stations from a monitoring seismic network and temporary stations from past passive experiments in the region are considered, resulting in a combined network of 33 stations separated by distances between 60 and 1311 km, approximately. The Rayleigh-wave, dispersion velocity measurements are then used to develop tomographic images of group velocity variation for the Borborema Province of Northeast Brazil. The tomographic maps allow to satisfactorily map buried structural features in the region. At short periods (~5 s) the images reflect shallow crustal structure, clearly delineating intra-continental and marginal sedimentary basins, as well as portions of important shear zones traversing the Borborema Province. At longer periods (10 – 20 s) the images are sensitive to deeper structure in the upper crust, and most of the shallower anomalies fade away. Interestingly, some of them do persist. The deep anomalies do not correlate with either the location of Cenozoic volcanism and uplift - which marked the evolution of the Borborema Province in the Cenozoic - or available maps of surface heat-flow, and the origin of the deep anomalies remains enigmatic.

Modelos de condutividade térmica em rochas silicáticas, com ênfase em rochas da província Borborema, NE do Brasil

A practical approach to estimate rock thermal conductivities is to use rock models based just on the observed or expected rock mineral content. In this study, we evaluate the performances of the Krischer and Esdorn (KE), Hashin and Shtrikman (HS), classic Maxwell (CM), Maxwell-Wiener (MW), and geometric mean (GM) models in reproducing the measures of thermal conductivity of crystalline rocks.We used 1,105 samples of igneous and metamorphic rocks collected in outcroppings of the Borborema Province, Northeastern Brazil. Both thermal conductivity and petrographic modal analysis (percent volumes of quartz, K-feldspar, plagioclase, and sum of mafic minerals) were done. We divided the rocks into two groups: (a) igneous and ortho-derived (or meta-igneous) rocks and (b) metasedimentary rocks. The group of igneous and ortho-derived rocks (939 samples) covers most the lithologies de_ned in the Streckeisen diagram, with higher concentrations in the fields of granite, granodiorite, and tonalite. In the group of metasedimentary rocks (166 samples), it were sampled representative lithologies, usually of low to medium metamorphic grade. We treat the problem of reproducing the measured values of rock conductivity as an inverse problem where, besides the conductivity measurements, the volume fractions of the constituent minerals are known and the effective conductivities of the constituent minerals and model parameters are unknown. The key idea was to identify the model (and its associated estimates of effective mineral conductivities and parameters) that better reproduces the measures of rock conductivity. We evaluate the model performances by the quantity  that is equal to the percentage of number of rock samples which estimated conductivities honor the measured conductivities within the tolerance of 15%. In general, for all models, the performances were quite inferior for the metasedimentary rocks (34% <  < 65%) as compared with the igneous and ortho-derived rocks (51% <  < 70%). For igneous and ortho-derived rocks, all model performances were very similar ( = 70%), except the GM-model that presented a poor performance (51% <  < 65%); the KE and HS-models ( = 70%) were slightly superior than the CM and MW-models ( = 67%). The quartz content is the dominant factor in explaining the rock conductivity for igneous and ortho-derived rocks; in particular, using the MW-model the solution is in practice vi UFRN/CCET– Dissertação de mestrado the series association of the quartz content. On the other hand, for metasedimentary rocks, model performances were different and the performance of the KEmodel ( = 65%) was quite superior than the HS ( = 53%), CM (34% <  < 42%), MW ( = 40%), and GM (35% <  < 42%). The estimated effective mineral conductivities are stable for perturbations both in the rock conductivity measures and in the quartz volume fraction. The fact that the metasedimentary rocks are richer in platy-minerals explains partially the poor model performances, because both the high thermal anisotropy of biotite (one of the most common platy-mineral) and the difficulty in obtaining polished surfaces for measurement coupling when platyminerals are present. Independently of the rock type, both very low and very high values of rock conductivities are hardly explained by rock models based just on rock mineral content.

Influência de mudanças de fase no ciclo claro-escuro sobre o controle autonômico cardíaco de ratos

Introduction: The circadian system has neural projections for the Autonomic Nervous System (ANS), directly interfering with sympathetic-vagal modulation of the cardiovascular system. Disturbances in the circadian system, such as phase changes in light-dark cycle (LD), has been related to the risk of development of cardiovascular diseases due to increased sympathetic tone and reduction o Heart Rate Variability (HRV - RR intervals). Purpose: Investigate the interaction between Circadian Timing System and cardiac autonomic control in rats. Materials and methods: We used 18 Wistar rats (♀, age = 139.9 ± 32.1 days, weight = 219.5 ± 16.2 g), divided into three distinct groups: Control (CG), phase delay of 6h (GDe) and phase advance of 6h (GAd). Three animals were excluded during data collection (CG/GDe/GAd - n=5). Telemeters were surgically implanted in each animal for continuous acquisition of electrocardiographic (ECG) signals (duration of 21 days in the CG and 28 days in GDe/ GAd). A LD cycle was established 12h: 12h, beginning of light at18:00h and dark at 06:00h. The animals remained in the same CG LD cycle throughout the experimental period, while, on the 14th day of registration, the GDe and GAd underwent a delay and an advance in 6h, respectively. Throughout the experimental period, the locomotor activity (LA), the mean heart rate (mHR) and variables related to iRR [mean RR (mRR), SDNN, RMSSD, LF, HF and LF/ HF ratio ] were recorded. All data were analyzed in blocks of 3 and 7 days, for the presence of circadian rhythm, values of Cosinor - mesor, amplitude and acrophase (paired t test), phase relationship, differences between light and dark (t test independent), averages every 30 minutes along each time series (two-way ANOVA with post hoc Bonferroni). The data block B1,M1 and M2 in CG served as benchmarks for comparisons between series of analysis of the GAT/GAV. Results: We observed circadian rhythmicity in the variables LA, mRR and mFC(p<0.01). mRR and mFC showed phase relationship with the LA in all three groups, being less stable in GAd. In the CG, no significant differences between blocks were found in any of the analyzes(p>0.05). Among the 7 day blocks, there was a significant reduction in mRR(p=0.04) and mFC(p=0.03) in GDe and significant reduction in HF mean(p=0.02) in GAd; and between 3 day blocks, a significant increase of LF/HF(p= 0.04) in the GDe; besides mRR(p=0.03), SDNN(p=0.04), RMSSD (p=0.04), LF (p=0.01) and HF(p=0.02) significant increase in the GAd. It was found that the differences between the means of the mRR, LA and mFC in light and dark phases were not significant after phase changes in some of the blocks/moments (GDe and GAd). No significant results were found when comparing rhythmic variables means every 30 minutes over the blocks, except for a significant decrease in mRR at the middle of the dark phase (B2) and the start of light phase (B3) - (p<0.01). Conclusion: phase advances and delays (6h) altered cardiac autonomic control in the experimental groups by temporarily HRV decrease. Phase advances apparently had greater negative interference in this process, in relation to the phase delays.

Abordagens de estudo e performance da obra Responsório ao vento para violoncelo solo de Sílvio Ferraz

Recognized for his relevant writing for the cello, Silvio Ferraz wrote , in 2012, Segundo Responsório for cello solo and chamber group which followed Responsório ao Vento , a version of the same piece for solo cello . The work is characterized by the idea of continuity of sound moving through different textures , timbres , dynamics and musical gestures. The composer uses extended techniques, such as large sections in sul tasto playing three strings simultaneously, trills of natural harmonics , muffled trills with natural harmonics , col legno batuto , different types of glissando and simultaneous sounds of harmonic and non harmonic notes corroborate to a wealth of sounds and layers that create different textures. This article investigates the relationship of the composer with the cello, and relates Responsório ao Vento to his other works and studies the influences of the composer addressing technical and interpretive aspects of the piece drawn from performance experiences.

A neuromodulação do córtex pré-frontal dorsolateral na percepção de tempo em contexto neutro ou emocionalmente ativo

The time perception is critical for environmental adaptation in humans and other species. The temporal processing, has evolved through different neural systems, each responsible for processing different time scales. Among the most studied scales is that spans the arrangement of seconds to minutes. Evidence suggests that the dorsolateral prefrontal (DLPFC) cortex has relationship with the time perception scale of seconds. However, it is unclear whether the deficit of time perception in patients with brain injuries or even "reversible lesions" caused by transcranial magnetic stimulation (TMS) in this region, whether by disruption of other cognitive processes (such as attention and working memory) or the time perception itself. Studies also link the region of DLPFC in emotional regulation and specifically the judgment and emotional anticipation. Given this, our objective was to study the role of the dorsolateral prefrontal cortex in the time perception intervals of active and emotionally neutral stimuli, from the effects of cortical modulation by transcranial direct current stimulation (tDCS), through the cortical excitation (anodic current), inhibition (cathode current) and control (sham) using the ranges of 4 and 8 seconds. Our results showed that there is an underestimation when the picture was presented by 8 seconds, with the anodic current in the right DLPFC, there is an underestimation and with cathodic current in the left DLPFC, there is an overestimation of the time reproduction with neutral ones. The cathodic current over the left DLPFC leads to an inverse effect of neutral ones, an underestimation of time with negative pictures. Positive or negative pictures improved estimates for 8 second and positive pictures inhibited the effect of tDCS in DLPFC in estimating time to 4 seconds. With this work, we conclude that the DLPFC plays a key role in the o time perception and largely corresponds to the stages of memory and decision on the internal clock model. The left hemisphere participates in the perception of time in both active and emotionally neutral contexts, and we can conclude that the ETCC and an effective method to study the cortical functions in the time perception in terms of cause and effect.

Estudo sobre a relação entre a atividade geomagnética e cintilações de sinais de GPS em Natal-RN (Brasil)

To identify the relationship between GPS scintillation in Natal-RN (Brazil) and geomagnetic disturbances of any intensities and variations, this work made analysis of the ionospheric behavior and magnetic indexes (Dst , AE and Bz of the interplanetary magnetic field) concerning to different periods of the solar cycle between 2000 and 2014. Part of the data of this research originated at the UFRN observatory, from a GEC Plessey board connected to an ANP -C 114 antenna, modified by Cornell University’s Space group Plasma Physics in order to operate the ScintMon, a GPS monitoring program. This study, therefore, found several cases of inhibited scintillations after the main phase of magnetic storms, a fact that, along with others, corroborated with categorization of Aarons (1991) and models of disturbed dynamo (according to Bonelli, 2008) and over-shielding penetration, defended by Kelley et al. (1979) and Abdu (2011) [4]. In addition to these findings, different morphologies were noted in such disruptions in the GPS signal in accordance with previous magnetic activities. It also found a moderate relationship (R2 = 0.52) between the Dst rate (concerning to specific time) and the average of S4 through a polynomial function. This finding therefore, corroborating Ilma et al. (2012) [17], is an important evidence that the scintillation GPS are not directly controlled by magnetic induction of storms. Completing this work, this relation did show itself as a way of partial predicting of scintillations.

Estudo dos harmônicos entre diferentes sistemas de excitação de máquinas síncronas

Dissertação (Mestrado)

Modelagem molecular voltada para a construção de um nanobiossensor para detecção do herbicida Imazaquin

In this study, our goal was develop and describe a molecular model of the enzyme-inhibiting interaction which can be used for an optimized projection of a Microscope Force Atomic nanobiosensor to detect pesticides molecules, used in agriculture, to evaluate its accordance with limit levels stipulated in valid legislation for its use. The studied herbicide (imazaquin) is a typical member of imidazolinone family and is an inhibitor of the enzymatic activity of Acetohydroxiacid Synthase (AHAS) enzyme that is responsible for the first step of pathway for the synthesis of side-chains in amino acids. The analysis of this enzyme property in the presence of its cofactors was made to obtain structural information and charge distribution of the molecular surface to evaluate its capacity of became immobilized on the Microscopy Atomic Force tip. The computational simulation of the system, using Molecular Dynamics, was possible with the force-field parameters for the cofactor and the herbicides obtained by the online tool SwissParam and it was implemented in force-field CHARMM27, used by software GROMACS; then appropriated simulations were made to validate the new parameters. The molecular orientation of the AHAS was defined based on electrostatic map and the availability of the herbicide in the active site. Steered Molecular Dynamics (SMD) Simulations, followed by quantum mechanics calculations for more representative frames, according to the sequential QM/MM methodology, in a specific direction of extraction of the herbicide from the active site. Therefore, external harmonic forces were applied with similar force constants of AFM cantilever for to simulate herbicide detection experiments by the proposed nanobiosensor. Force value of 1391 pN and binding energy of -14048.52 kJ mol-1 were calculated.

A música nos currículos específicos individuais

Tendo como suporte a revisão bibliográfica, pretende-se com este estudo de caso de carater interpretativo, compreender qual o papel da música inserida nos currículos específicos individuais (CEI). O estudo pretende contribuir para uma maior compreensão acerca da inclusão da disciplina de Educação Musical nos CEI, conhecer as práticas pedagógicas desenvolvidas com alunos ao abrigo de um CEI e caraterizar e promover o desenvolvimento musical dos três alunos participantes. O trabalho empírico no qual foi delineada a investigação assenta numa metodologia qualitativa. Nos instrumentos de recolha de dados saliento, as entrevistas, as notas de campo e o círculo de desenvolvimento musical “Sound of Intent”. Os resultados reforçam a importância da formação docente na intervenção com crianças com NEE e a clara valorização do papel da música nestes currículos. Observa-se que os três alunos, embora caraterizados com perturbações de grau e patologia diferenciadas, e com manifestações variadas, mostram níveis de musical dos alunos, corresponde ao perfil descrito na literatura o que nos permite sugerir que as atividades e estratégias utilizadas contribuíram para o desenvolvimento das diferentes dimensões analisadas promovendo o desenvolvimento de competências musicais e extra musicais.

Adaptação e validação da escala GenCat de calidade de vida para a população adulta portuguesa com deficiência

Para melhorar o apoio social prestado às pessoas com deficiência em Portugal, urge perceber como esta população perceciona a própria Qualidade de Vida (QV). Este trabalho tem como objetivos: adaptar e validar a escala Gencat de Calidade de vida à população portuguesa adulta com deficiência; estudar como se manifesta a Qualidade de Vida na população portuguesa adulta com deficiência; analisar a relação de QV com algumas variáveis socio demográficas da população portuguesa adulta com deficiência, tipos de incapacidades e gravidade da amostra. A escala Gencat foi aplicada a 303 pessoas com perturbações motoras, sensitivas e/ou do desenvolvimento. Foi realizada a caraterização sociodemográfica do informador e da pessoa avaliada e a caracterização da gravidade da perturbação sofrida. O estudo psicométrico resultou numa escala de 54 itens e 8 domínios: Autodeterminação, Suporte Institucional, Satisfação Ocupacional, Bem-Estar Emocional, Inclusão Social, Condições Habitacionais e Comunitárias, Auto-eficácia e Bem-estar Físico. A escala apresenta boas propriedades psicométricas. A idade está inversamente correlacionada com as dimensões apoio institucional e bemestar físico da escala de Gencat. A população analfabeta apresenta menor QV global, nomeadamente na autodeterminação, suporte institucional, inclusão social e bem-estar físico. As pessoas institucionalizadas relativamente às que vivem em contexto familiar apresentam valores mais baixos de QV, nomeadamente na autodeterminação, suporte institucional, inclusão social e auto-eficácia, mas apresentam pontuações melhores condições habitacionais e comunitárias. O grau de incapacidade e a intensidade das perturbações cognitiva, motora, autismo e cegueira correlaciona-se inversamente com a QV, nomeadamente na autodeterminação, no suporte institucional, na inclusão social e o bem-estar físico.

Comunicar para ser compreendido: Construção de uma Carteira de Comunicação

As deficiências nos seus mais variados graus e complexidades podem impedir a eficácia do processo comunicativo. Estas limitações causam enormes perturbações no desenvolvimento dos indivíduos, e torna-se necessário um trabalho de intervenção que procure atender aos indivíduos com disfunções na comunicação através da aplicação de instrumentos que lhes permitam e possibilitem expressarem-se e comunicarem de forma eficaz. O presente trabalho apresenta o processo e os resultados parciais obtidos após o uso de uma “Carteira de Comunicação” por um individuo com incapacidade. Num primeiro momento foi feito um trabalho de análise conceptual com vista a possibilitar a melhoria da interação entre o sujeito do estudo e terceiros onde o principal objetivo e possibilitar a melhoria da comunicação entre as partes. Posteriormente, através do uso de pictogramas e de um sistema pictográfico para a comunicação (SPC) foram criadas tabelas e cartões a serem inseridos na carteira de comunicação a ser utilizada no quotidiano do sujeito. Trata-se de uma proposta de atuação onde a comunicação aumentativa cumpre os objetivos de proporcionar as ajudas técnicas específicas que ampliem as capacidades de interação proporcionando solução para as barreiras comunicativas e de aprendizagem assim como a autonomia de sujeitos com deficiências associadas.

Complicações do Alcoolismo na Família: Intervenções de Enfermagem

Desde há muito, o alcoolismo tem sido um tema em voga. No entanto, não deixa de ser um tema atual, objeto de preocupação e discussão de profissionais de diversas áreas do saber. Não obstante as respostas e os contributos que os profissionais trazem à mesa e que muito contribuem para a compreensão do fenómeno “alcoolismo” enquanto problema de Saúde Pública, sabe-se bem que um pouco por todo lado, e Cabo Verde não foge a regra, tem havido um aumento do consumo de álcool e os efeitos nefastos que este acarreta são cada vez mais frequentes e assustadores. Essa problemática é, na sua maioria, abordada sob o ponto de vista do alcoólico, e muito pouco abordada sob a perspetiva da família que tem no seu seio um elemento identificado como alcoólico. Assim com o objetivo de identificar as intervenções de Enfermagem perante as complicações do alcoolismo na família, foi realizado um estudo de caso abordado de forma qualitativa com uma família que tem no seu seio um elemento identificado alcoólico. Os dados foram recolhidas através da observação não estruturada, entrevistas semiestruturadas e questionários. Os resultados demonstram que as complicações do alcoolismo na família giram em torno de perturbações na harmonia e no equilíbrio familiar, violência verbal, problemas financeiros, conflitos interpessoais e sofrimento. Tais complicações demandam intervenção de uma equipa multidisciplinar onde a enfermagem tem um papel proactivo no ensino: processo de doença, no aumento da disponibilidade de aprendizagem, na redução da ansiedade, aumento do sistema de apoio e da autoestima, assistência de autocuidado, motivação do comportamento, facilitação de auto responsabilidade, apoio a tomada de decisão, promoção do envolvimento familiar, suporte a família, apoio ao cuidador, entre outras. As intervenções de enfermagem versadas neste trabalho figuram como ferramentas necessárias no cuidado ao alcoólico e sua família com vista a melhorar a qualidade de vida dos mesmos.

Validação Transcultural das Escalas ZKPQ-50-CC (Personalidade), BAS (Imagem Corporal) e AS (Ambivalência na Decisão de Ter Relações Sexuais) para Adolescentes

Introdução: A adolescência é um período onde se operam muitas mudanças tanto físicas como psíquicas. É comum o surgimento de algumas perturbações que devem ser convenientemente avaliadas pelo Psicólogo. É assim, muito importante o rigor na avaliação em Psicologia sendo essencial a utilização de instrumentos que sejam válidos e fiáveis. Metodologia: O principal objetivo deste estudo foi traduzir e validar, para a população portuguesa, três instrumentos de avaliação de adolescentes: O Zuckerman Kuhlman Personality Questionnaire Cross-cultural 50 items version (ZKPQ-50-CC) (Aluja, Rossier, García, Angleitner, Kuhlman, & Zuckerman, 2006), para avaliação da personalidade; a Body Appreciation Scale (BAS) (Avalos, Tylka & Wood-Barcalow, 2005), para avaliação da apreciação corporal positiva e; a Ambivalence Scale (AS) (Pinquart, 2009) para avaliação da ambivalência na decisão de ter relações sexuais. Este estudo metodológico incidiu sobre 877 a adolescentes das escolas secundárias em Leiria e Porto de Mós sendo maioritariamente (64,08%) do sexo feminino e com média de 16,70 anos (DP = 1,21) de idade. Na validação seguiu-se a mesma metodologia dos autores das escalas originais a quem foi solicitada autorização, assim como às direções das instituições onde recolhemos os dados. Solicitou-se igualmente consentimento aos pais e aos adolescentes. Resultados: A Body Appreciation Scale (BAS) e a Ambivalence Scale (AS) constituídas por 7 itens, permitem obter uma pontuação global e apenas um fator. Por seu lado, a determinação das caraterísticas psicométricas do ZKPQ-50-CC permite manter as 5 escalas da estrutura do original. Conclusão: Os três instrumentos apresentam valores de consistência interna e validade que permitem que sejam considerados rigorosos e fiáveis podendo ser utilizados futuramente em avaliação e investigação. / Introduction: Adolescence is a period of a lot of changes both physical and psychic. It´s common the emergence of some disorders that should be properly evaluated by the Psychologist. It is thus very important the rigor of Psychological Evaluation and it´s essential to use instruments that are valid and reliable. Metodology: The main objective of this study was to translate and validate, for the Portuguese population, three assessment instruments in adolescence: The Zuckerman Kuhlman Personality Questionnaire Cross-cultural 50 items version (ZKPQ-50-CC) (Aluja, Rossier, García, Angleitner, Kuhlman , & Zuckerman, 2006) for personality assessment, the Body Appreciation Scale (BAS) (Avalos, Tylka, & Wood Barcalow, 2005), to evaluate the positive body assessment; and the Ambivalence Scale (AS) (Pinquart, 2009) for assessment of ambivalence in the decision about having sexual intercourse. This methodological study focused on 877 adolescents from high schools in Leiria and Porto de Mós, mostly females (64,08%), mean age of 16,70 years old (SD = 1,21). The validation followed the same methodology the authors of the scale, to whom consent was requested, as well as to directors of the institutions where we collect data. We also asked for consent to parents and adolescents. Results: The Body Appreciation Scale (BAS) and the Ambivalence Scale (AS), both with seven items, allow to obtain an overall score and only one factor. For its part, the determination of the psychometric features of QPZK-50-CC allows to maintain the five scales of the original structure. Conclusion: The three instruments show internal consistency and validity that allow them to be considered accurate and reliable and used in future evaluation and research.