Estudio maxilo-facial : determinación de la edad

Fil: Guiñazú Widmer, Mario. Universidad Nacional de CuyoFil: Pedrosa, Valeria Beatriz. Universidad Nacional de Cuy

Desenvolvimento e acúmulo de macronutrientes em plantas de milho biofertilizadas com manipueira.

Objetivou-se, neste estudo, avaliar o desenvolvimento vegetativo e o acúmulo de macronutrientes em plantas de milho submetidas às doses de manipueira. O experimento foi conduzido em ambiente protegido no período de março a maio de 2011. O delineamento experimental foi inteiramente casualizado em esquema fatorial 2 (tipos de solo: franco-arenoso e franco-argiloso) × 4 (doses de manipueira: 0; 11,2; 22,4 e 44,8 m3 ha-1), com oito repetições. As variáveis analisadas foram: altura das plantas, diâmetro de colmos, número de folhas, matéria fresca e matéria seca da parte aérea das plantas e teores de N, P, K, Ca e Mg no tecido foliar. O aumento das doses de manipueira elevou o conteúdo de massa fresca, o teor de nitrogênio e potássio da parte aérea das plantas, mas diminuiu a altura das plantas e o teor de magnésio na parte aérea das plantas. Os acréscimos de matéria seca e de cálcio na parte aérea das plantas foram maiores no solo franco-arenoso

Galaxy-Induced Transformation of Dark Matter Halos

We use N-body/gasdynamical LambdaCDM cosmological simulations to examine the effect of the assembly of a central galaxy on the shape and mass profile of its dark halo. Two series of simulations are compared; one that follows only the evolution of the dark matter component and a second one where a baryonic component is added. These simulations include radiative cooling but neglect star formation and feedback, leading most baryons to collect at the halo center in a disk which is too small and too massive when compared with typical spiral. This unrealistic model allows us, nevertheless, to gauge the maximum effect that galaxies may have in transforming their dark halos. We find that the shape of the halo becomes more axisymmetric: halos are transformed from triaxial into essentially oblate systems, with well-aligned isopotential contours of roughly constant flattening (c/a ~ 0.85). Halos always contract as a result of galaxy assembly, but the effect is substantially less pronounced than predicted by the "adiabatic contraction" hypothesis. The reduced contraction helps to reconcile LambdaCDM halos with constraints on the dark matter content inside the solar circle and should alleviate the long-standing difficulty of matching simultaneously the scaling properties of galaxy disks and the luminosity function. The halo contraction is also less pronounced than found in earlier simulations, a disagreement that suggests that halo contraction is not solely a function of the initial and final distribution of baryons. Not only how much baryonic mass has been deposited at the center of a halo matters, but also the mode of its deposition. It might prove impossible to predict the halo response without a detailed understanding of a galaxy's assembly history. (Abriged)Comment: 11 pages and 9 figure

Fatores associados a sintomas depressivos entre estudantes de medicina da UNILUS

OBJECTIVES: 1 - Verify the prevalence of depressive symptoms in first to fourth-year medical students using the Beck Depression Inventory (BDI). 2 - Establish correlations between target factors and higher or lower BDI scores. 3 - Investigate the relationship between the prevalence of depressive symptoms and the demand for psychological care offered by the Centro Universitário Lusíada. METHOD: Cross-sectional study of 290 first to fourth-year medical students; implementation of the BDI, socio-demographic survey, and evaluation of satisfaction with progress. RESULTS: The study sample was 59% female and 41% male. Mean BDI was 6.3 (SD 5.8). Overall prevalence of depressive symptoms was 23.1%. The following associations were statistically significant (p<0.05): among students for whom the course failed to meet original expectations, who were dissatisfied with the course, or who came from the interior of the State (20.5%, 12.5%, and 24.4% of the total sample, respectively), for 40%, 36.1% and 36.4%, respectively, the BDI was consistent with some degree of depression. CONCLUSION: The study showed that there is higher prevalence of depressive symptoms in medical students than in the general populationOBJETIVOS: 1- Verificar prevalência de sintomas depressivos nos estudantes de medicina do 1º a 4º ano através do Inventário de Depressão de Beck (IDB). 2- Estabelecer correlações entre os fatores questionados e a incidência de maior ou menor pontuação no IDB. 3- Investigar relação entre a prevalência de sintomas depressivos e a procura por atendimento psicológico oferecido pela Universidade Lusíada. MÉTODO: Desenho transversal realizado com 290 acadêmicos do curso de medicina, do 1º ao 4º ano. Realizada aplicação do IDB, questionário sócio-demográfico e avaliação sobre satisfação com curso. RESULTADOS: Da amostra estudada, 59% sãomulheres e 41% homens. O escore médio do IDB foi de 6,3 com DP de 5,8. Aprevalência total desintomas depressivos foi de 23,1%. As seguintes relaçõesapresentaram significância estatística (P<0,05): Dosestudantes queafirmam que o curso não corresponde às expectativas iniciais,dosestudantes insatisfeitos com o curso e dosestudantes procedentes do Interior do Estado(20,5%; 12,5%e 24,4% da amostra total, respectivamente), 40%, 36,1% e 36,4% respectivamente, tem escore compatível com algum grau de depressão. CONCLUSÃO: O presente estudo mostrou que há maior prevalência de sintomas depressivos nos estudantes de Medicina que na população geralCentro Universitário LusíadaUniversidade Federal de São Paulo (UNIFESP)Pontifícia Universidade Católica de São PauloUNIFESPSciEL

OPTIMIZATION OF ALBENDAZOLE 400 MG TABLET COMPRESSION PROCESS USING DESIGN OF EXPERIMENT (DOE) APPROACH

Objective: The present study aims to model and optimize the compression process of the Albendazole 400 mg tablets of a pharmaceutical industry production line to increase the production speed (tablets/h) while maintaining quality requirements. Methods: The study was conducted using the Design of Experiments (DoE) methodology to identify and correlate the critical parameters during the process that affect the maintenance of the compression speed. In order to support the experiments, was tested disintegration time, average hardness, hardness variation, average weight, and friability. Results: Was obtained that quality attributes of disintegration and friability did not generate a significant model but it has been established correlations between Fill-O-Matic speed and main compression force in the responses of weight variation, hardness, and mean hardness. It was found that the main compression force between 6 to 9 kN, the pre-compression force of 1,965 to 5,615 kN, and the speed of 55 RPM for Fill-O-Matic speed are responsible for ensuring that all quality attributes analyzed remain within the expected specification. Conclusion: It was possible to apply the Design of Experiment (DoE) methodology in the compression process of the drug Albendazole 400 mg and to evaluate the impact of the parameters of this step on the formation of the tablet to significantly increasing the productivity of this product. The Fill-O-Matic speed parameter was the main control factor discovered in this study to maintain quality attributes

Left ventricular mass and cardiothoracic index in patients with chronic renal disease on hemodialysis

Introduction:Left ventricular hypertrophy (LVH) is an independent predictor of cardiovascular risk in patients with chronic renal disease (CRD) on hemodialysis (HD). Objective:To show the usefulness of chest radiography in the diagnosis of LVH in CRD patients on HD. Methods:Cross-sectional study including 100 patients (58 men and 42 women), mean age 46.2 ± 14.0 years, with CRD of all causes, for at least six months on HD. Were obtained echocardiogram and chest x-rays of patients, always up to one hour after the end of HD sessions. Results:LVH was detected in 83 patients (83%), of whom 56 (67.4%) had the concentric pattern and 27 (32.6%) with eccentric pattern of LVH. Cardiomegaly - defined by cardiothoracic index (CTI) > 0.5 - was present in 61 patients (61%). The following were the sensitivity, specificity and accuracy, respectively, for the variable ICT: 66.2%, 70.5% and 68.0%. The Pearson correlation between ICT and index of left ventricular mass (LVMI) was 0.552 (p 0,5 - esteve presente em 61 pacientes (61%). Foram os seguintes os valores de sensibilidade, especificidade e acurácia, respectivamente, para a variável ICT: 66,2%, 70,5% e 68,0%. A correlação de Pearson entre ICT e índice de massa do ventrículo esquerdo (IMVE) foi de 0,552 (p < 0,05) e razão de verossimilhança positivo de 2,2. Conclusão:A radiografia de tórax é um exame seguro e útil como ferramenta diagnóstica de HVE em pacientes com DRC em HD.Universidade Federal de São Paulo (UNIFESP)Universidade Estadual de Ciências da Saúde de AlagoasUniversidade de São PauloUniversidade Federal de AlagoasUniversidade Federal de SergipeUNIFESPSciEL

Viewing puzzles as two-faced: theoretical and practical implications for Puzzle-based Learning

The Puzzle-based Learning approach has been applied to several fields of knowledge. In education research papers, the instructional usage of puzzles is considered to improve learners’ motivation and engagement and help them to develop critical skills but difficulties concerning learners’ interaction with puzzles have also been pointed out. Our paper investigates the dynamics of the concept of a puzzle and its interface to provide a better understanding of its form and functions, and help learners interact with puzzles. We consider Puzzle-based Learning tenets as well as their educational impacts on both critical thinking and learner engagement and provide an original proposal concerning the understanding of puzzles. Our proposal centered on the dynamics of puzzles bears conceptual and educational facets. Conceptually, puzzle dynamics is viewed as composed of two elements: a mechanism, the Puzzle Trigger, and a process, the Puzzle-Solving. From an educational point of view, the rationale for integrating Puzzle Triggers in Puzzle-based Learning is meant to help learners interact with puzzles and consequently become motivated and engaged in the Puzzle-Solving process. This way, learners’ critical thinking skills are reinforced and focused on finding solutions to challenges. We illustrate the implementation of Puzzle Triggers and Puzzle-Solving by considering two instructional activities in a Software Development undergraduate course of an online learning Informatics Engineering Program.info:eu-repo/semantics/publishedVersio

Detailing an e-Learning course on software engineering and architecture using BPMN

We have employed BPMN diagrams to expose the foreseen teaching and learning activities of participants in an e-learning course under planning. This provided clarification of the teaching and learning actions, revealing to the educational planning team aspects which were not explicit in the lecturer’s plan, such as: the level of effort for the teacher as well as for the student; specific moments when there is a need to provide feedback and motivation. We believe that this exercise constitutes a rich and helpful contribution in planning and visualization efficient for other teaching teams of computer programming courses.info:eu-repo/semantics/publishedVersio

Relationship between soil organic matter and nematodes in sugarcane fields

Sugarcane plays an important socio-economic role in northeastern Brazil. However, the low yield in this region is associated with several factors (e.g. frequent occurrence of plant-parasitic nematodes). In order to observe the influence of soil organic matter on the nematodes, this study aimed to characterize the spatial nematode distribution in a sugarcane field. The study was carried out in Goiana - Pernambuco State (Brazil), fifty days after sugarcane cutting (10 days after vinasse application). The sampling scheme consisted of a regular 60 × 50-m grid, 10 m spaced, through 0 to 0.2 m depth. Spatial distribution was evaluated by semivariograms fit and performed by ordinary kriging interpolation for mapping. Exponential and spherical models promoted the best fit to semivariograms, resulting in ranges from 16 to 19 m. There was a strong negative correlation between soil organic matter and plant-parasitic nematode population density. Free-living nematodes had a similar distribution pattern as soil organic matter content. These results indicated that soil organic matter had important effects on spatial distribution of both plant-parasitic and free-living nematodes

A note on comonotonicity and positivity of the control components of decoupled quadratic FBSDE

In this small note we are concerned with the solution of Forward-Backward Stochastic Differential Equations (FBSDE) with drivers that grow quadratically in the control component (quadratic growth FBSDE or qgFBSDE). The main theorem is a comparison result that allows comparing componentwise the signs of the control processes of two different qgFBSDE. As a byproduct one obtains conditions that allow establishing the positivity of the control process.Comment: accepted for publicatio