Stress responses of juvenile matrinxã (Brycon amazonicus) after transport in a closed system under different loading densities

Neste estudo, foram investigadas as densidades de carga adequadas para transporte de matrinxãs juvenis em sistema fechado com sacos plásticos. O transporte de 4h foi feito com peixes (23,5±0,4g; 11,6 (0,08cm) em jejum por 24h, em densidades de 83g L-1 (D1), 125g L-1 (D2), 168g L-1 (D3) e 206g L-1 (D4). Os peixes foram amostrados antes do transporte (AT), logo após o transporte (chegada) (DT) e 24h depois. A qualidade da água foi monitorada antes da captura dos peixes nos tanques de depuração, após o transporte nos sacos plásticos e nos tanques de recuperação. O oxigênio da água diminuiu para valores inferiores a 4mg L-1 em D2, D3 e D4, a temperatura esteve em torno de 32°C, pH 6,5-6,78, a amônia total foi de 1,09-1,7mg L-1, a amônia não-ionizada foi de 3,58-9,33 x 10³mg L-1 e alcalinidade 134-165mg CaCO3 L-1. O cortisol plasmático e a glicose sanguínea aumentaram após o transporte nos peixes em todas as densidades ensaiadas, voltando aos valores controle 24h depois. Os valores de osmolaridade não mudaram logo após o transporte, mas aumentaram 24h depois de modo igual em todas as densidades. O cloreto plasmático diminuiu na chegada, de modo inversamente proporcional à densidade de carga. O hematócrito diminuiu 24h depois da chegada dos peixes, em todas as densidades testadas, mas não houve diferença no número de eritrócitos. Não houve mortalidade até uma semana após o transporte. O matrinxã mostrou ser uma espécie tolerante a altas densidades de carga em embalagens para transporte além de suportar baixos níveis de oxigênio na água.

Control automatico de un sistema electrico mediante logica difusa

Substitution of fuzzy logic control in an electrical system normally controlled by proportional-integral frequency was studied and analyzed. A linear model of an electrical system, the concepts which govern the theory of fuzzy logic, and the application of this theory to systems control, are briefly presented. The methodology of fuzzy logic was then applied to develop a model for an electrical energy system. The results of the simulation demonstrated that fuzzy logic control eliminated the area frequency error and permitted that only the area experiencing an increase in charge responds to this variation. Based on the results, it is concluded that control based on fuzzy logic is simple, is easy to maintain, is of low cost, and can be used to substitute traditional velocity controllers.

Estudio de la compactación de un Ferralsol manejado con un sistema de no laboreo en Selvíria (MS, Brasil)

No tillage management is widely used by the Brazilian farmers and technicians like a soil conservation system, which reduces the soil losses by water erosion, increasing the infiltrated and stored water in soil, warranting environmental sustainability. No-tillage system does not invert the soil; it causes the creation of a compacted layer. The samples were taken in the agricultural year 2005/2006 in an Oxisoil at Selviria (MS/Brazil). The tillage management in the last 15 years was no-tillage system with crop rotation (maize -Zea mays L./bean - Phaseolus vulgaris L.). The analyzed soil physical properties were bulk density (BS), gravimetric water content (U) and mechanical resistance to penetration (RP) at three depths: 0-0.10 m, 0.10-0.20 m and 0.20-0.30 m. The samples were taken in a mesh with 117 sampled points covering an area of 0.16 ha. It was investigated the existence of compacted soil layer, using the mechanical resistance to penetration to 0.60 m depth with soil water content at field capacity. The data shows low coefficient of variation, except the resistance penetration data. Bulk density and gravimetric water content has a normal distribution. Only resistance to penetration at 0.10-0.20 m depth layer has a normal distribution. The correlation between different properties was low. The bulk density increases with depth; the increase of the values of soil bulk density are consistent with data in other papers, indicating there are not compaction problems for the crop development at the study area. Most of the values of resistance to penetration are lower than 2 MPa, being this value restrictive for root development. The analysis of resistance to penetration profile 0 to 0.60 m shows a compacted layer between 0.20-0.30 m. This compacted layer was caused by the conventional tillage system used at this area before the use of no-tillage system. The soil bulk density has higher values at the upper area, that it shows higher values of soil compaction. Although the values of bulk density and resistance to penetration are high, the area does not show great problems of soil compaction.

Flujo de potencia AC descentralizado para sistemas de potencia multi-área usando un método de descomposición basado en relajación Lagrangiana

A decentralized solution method to the AC power flow problem in power systems with interconnected areas is presented. The proposed methodology allows finding the operation point of a particular area without explicit knowledge of network data of adjacent areas, being only necessary to exchange border information related to the interconnection lines between areas. The methodology is based on the decomposition of the first-order optimality conditions of the AC power flow, which is formulated as a nonlinear programming problem. A 9-bus didactic system, the IEEE Three Area RTS-96 and the IEEE 118 bus test systems are used in order to show the operation and effectiveness of the distributed AC power flow.

Atención farmacéutica como proceso pedagógico: Relato de un caso

The autonomy pedagogy allows the integration among theory, practice and reflection in the learning process. Applied to pharmaceutical care, the patient-centered process to achieve desired goals of therapy enables to build, rebuild and share knowledge and experiences with patients, in a critic and progressive way, inquiring and investigating. Therefore, it is possible to design a care plan according to patient experience, working together with the pharmaceutical care practitioner, to solve drugtherapy problems detected, with the patient as the center of the health care system. © 2012 Ediciones Mayo, S.A. Todos los derechos reservados.

Desempeño de tanques decantadores de sólidos en un sistema de recirculación para producción de tilapia

To compare the removal efficiency of solids, turbidity and apparent color between a conventional and a column settling tanks in a recirculating aquaculture system (RAS) for tilapia farming. Materials and methods. Tilapia with a stocking density between 30 and 33 kg/m3 were cultured in a RAS consisting of a water level control box, PVC piping system, three plastic tanks for culture, conventional horizontal flow settling tank (Con.ST), column vertical flow settling tank (Col.ST), three phase fluidized bed reactor, oxygen transfer reactor, air compressor, air blower, centrifugal pump. The Con.ST operated at a volume of 1.4 m3 and hydraulic retention time (HRT) of 2.94 h; and was drained weekly for washing and sludge collection, representing a 55%discharge of system water volume. The Col.ST operated with a volume of 0.30 m3 and HRT of 0.553 h. Three daily partial draining operations were executed, representing a discharge of 50% of the system volume. Results. The mean solids removal efficiencies were: 34.01 and 44.44%for total solids; 64.45 and 71.71% for suspended solids; 21.10 and 45.65% volatile solids; 65.51% and 62.79% for turbidity; and 56.37 and 50.91% for apparent color, respectively for Con.ST and Col.ST. Conclusions. The two settling devices are useful on removal of the studied parameters and presented similar performance on turbidity and apparent color removal; however, the Col.ST was more efficient than Con.ST for solids removal, requires less space, less volume and requires less discharge water volume, displaying feasibility for its use on RAS.

O mito de Ulisses em Se questo è un uomo

Este trabalho parte do mito de Ulisses retomado por Dante e se concentra na leitura feita por Levi do canto dantesco , bem como da (re) elaboração da última aventura do herói grego no contexto da história pessoal do escritor. Trata-se de um moderno Ulisses apresentando uma visão moderna do Inferno. Em Dante, Ulisses está entre as almas condenadas a pagar eternamente seus pecados e, ao mesmo tempo, testemunhas e narradores, capazes de contar o processo da própria morte. Neste sentido, o viajante grego tornou-se , a partir da publicação da obra de memória do Holocausto escrita por Primo Levi, o símbolo do testemunho dos campos de concentração. O exemplo clássico da presença de Dante na narrativa de Levi é o capítulo XI do livro Se questo è un uomo , intitulado “Il canto di Ulisse”, onde prosa e poesia se encontram. O mito de Ulisses, que representa a exaltação do homem inteligente, ávido de conhecimento, que chega às portas do grande mistério da existência humana torna-se, em Levi, um instrumento didático. Recitar uma poesia assume, no universo do campo de concentração, o valor de um ato político e humano, uma afirmação coletiva dos valores que aquele sistema pretendia destruir.

Les Salles de Ressouces Multifonctionnelles: un recous pour les écoles inclusives au Brésil

In the 90s, the Brazilian Secretariat of the Special Education Department has expanded the democratization of education and pupils’ access to schooling, by redefi ning the operation of special education services. With this inclusion policy, the education system has been restructured. An important action, conducted during the period de 2005 to 2010, was to propose, deploy and implement Multifunctional Resources Rooms (Sala de recursos multifuncionais, or SRM), from two different types (type I and II). The challenge was to promote educational inclusion, in a program entitled Inclusive Education: the right to diversity. In a seek for new identity of teacher training and professional practice in special education, the great educational innovation is to better articulate the work of “ordinary“ and specialized teachers, via the SRM, and to develop collective and participatory actions between common spaces and support spaces. In this context, the school and the family represent an important source of partnership.

Acogimiento en el proceso de formación de los odontologos en Brasil: un analisis en el contexto del Sistema Unico de Salud (SUS)

To define the profile of Dentistry’s academics, on the welcoming reception of patients/users attended in the Public Institution, under the guidelines of the SUS. Methods: A structured questionnaire was applied to 163 students, which contained questions that covered five variables (reception, dialogue and listening, action and care first contact, professional identity) and conducted an interview to associate to responses obtained during the first phase. Quantitative data were tabulated and analyzed by descriptive statistics in SPSS 16.0 and qualitative data analyzed through discourse of the collective subject. Results: It was observed that, intellectually, the most of student (70.7%) understand the concept and the repercussion of the welcoming reception process in health and many have caring characteristics. However, the pedagogic system formation makes it difficult or systemizes an integral and spontaneous welcoming action. Conclusions: The academics have the embracement profile but it is need more motivation in the humanization of the university teaching.

Work conditions and occupational health of dentists in Brazilian public health system

Conselho Nacional de Desenvolvimento Ciêntífico e Tecnológico (CNPq)

Analyse du processus d'inclusion d'un élève avec déficience physique en cours d'éducation physique: étude de cas

The aim of this study was to evaluate the effects of peer tutor teaching strategy, after a re-training, in relation to the inclusion process of a student with physical disability during physical education classes. The participants were: the student with physical disability, eight peer tutors, and a physical education teacher of a public school in Bauru, Brazil. As the students had previously experienced the tutoring training, a re-training was prepared, which enabled the reinforcement of some aspects of the tutoring and assistance strategies, in order to improve the tutor colleague action. To analyze, two observation instruments were used: System for Observing Fitness Instruction Time (SOFIT) and Souza Observation Protocol. Behavioral changes of the involved students were notable, due to the significant action of the re-training process. Thus, we highlight the importance of the periodic reinforcements of the training for the tutor colleagues, in order to preserve, or even improve the autonomy and self-esteem of the student with disability.

Biochemical changes during the induction of mineral stress in plants of bell pepper cultivated in fertigation system

The greenhouse production associated with the fertigation management, have established in Brazil as economical alternative for several horticultural species. With this strategy this study had as aim to evaluate possible impacts in the metabolism of plants of bell pepper (Capsicum annuum L.; cv Elisa) in response to the increase of mineral concentration in the soil. During the experiments, the some nutrient concentrations were altered, to obtain high values of electric conductivity (EC) in the soil solution. The EC values commonly observed in the traditional fertigation system were adopted, as control. It was also verified the possibility of reduction of the mineral stress impact by the application of organic matter in the soil. Parameters of the antioxidative response system, as the superoxide dismutase (SOD) and catalase enzyme activities besides the proline content were evaluated to measure the extension of the saline stress and their effects on the plants. The increase of EC of the soil induced to the increase of the proline concentration and the SOD activity. Unexpectedly, it was verified that the saline stress inhibited the activity of the enzyme catalase. It was also concluded that the monitoring of EC of the soil is an indispensable tool to reach success in the fertigation system and that the study of the activity of the enzymes of the antioxidative response system, and the proline contents can be assumed as indicators in of the levels of stress in bell pepper plants (Capsicum annuum L.; cv Elisa).