Physical Sciences and Engineering

The Instituto de Pesquisas Energéticas e Nucleares (IPEN) is today responsible for providing radiopharmaceuticals for 80% of nuclear medicine procedures in Brazil. The aim of this study is to analyze the impact of different radiopharmaceutical demands on IPEN production. The methodology used in this study is based on the system dynamics simulation paradigm, combined with empirical data obtained from the institutions and regulatory authorities.

The oil business carries a high level of risk and requires significant financial capital. A large part of this capital is channeled by international oil companies whose main objective is to renew their reserves and guarantee a competitive return. It is therefore important in the definition and negotiation of oil contracts to understand the risky nature of the oil business, the different sources of risk and the ability of the various parties to ensure such a risk.

In this present study, a fresh water heterocystous cyanobacterium Calothrix parietina WSU11 was obtained from the department of Biology, Wolaita Sodo University, Wolaita Sodo, Ethiopia. The purity of the obtained cyanobacterium was analyzed by streaking plate and microscopically. The purified cyanobacterium C. parietinaWSU11 was further cultured at mass level under laboratory conditions.

A qualidade de vida no trabalho refere-se ao bem-estar do colaborador dentro de seu ambiente de trabalho, tanto em instituição pública quanto privada, a fim de que os trabalhadores se sintam satisfeitos e motivados, contribuindo assim para o bom desempenho organizacional.

In this review paper, the role of fish as bio indicators is discussed. No other aquatic organism is suitable for the application of so many different methods which allow the evaluation of the severity of toxic impacts by determining the accumulation of toxicants in tissues, by using histological and haematological approaches or by detecting morphological anomalies. Due to its complex habitat requirements, the fish fauna is a crucial indicator of the ecological integrity of aquatic systems at different scales, from microhabitat to catchment.

This work aimed to develop a framework for assessing the technological maturity of companies that are born from research groups of educational institutions or research centers. These companies, commonly called academic spin-offs, usually start their activities after participating in incubation processes performed by academic incubators, where they learn to direct their efforts to business maturity, disregarding the technological maturity required for the development of their final product.

Photovoltaic energy has becoming a viable and non-polluting alternative for generating electricity. In the light of this fact, this study aims to find the most suitable locations for a photovoltaic solar plant in the State of Rio de Janeiro, Brazil, considering environmental, technical and economic criteria. The fuzzy logic, with its membership functions, was used to compute the criteria that were applied in the GIS (Geographic Information System). The review of articles using the AHP (Analytic Hierarchy Process) provided the degree of importance for each selected criteria.

A priori, este trabalho descortina a relevância do profissional de Psicopedagogia no âmbito escolar, deslindando que essa ciência se consubstancia a partir de dois saberes, quais sejam, Psicologia e Pedagogia além de desvelar a inconteste relevância do métier desse profissional nas escolas a partir de suas prerrogativas, atuando com enfoque multidisciplinar, visando detectar e intervir nos casos que digam respeito aos casos de problemas no processo de ensino-aprendizagem.

Cameroon's population growth is very high and makes access to housing difficult over time. The decision-making engineering that governs production the current planning and social housing presents many weaknesses. Among them, the production rates are very insufficient and the dominant constructive system is the reinforced concrete - hollow cement bonded hitch. The major challenge of the article is to propose an alternative decision-making approach to better integrate locally abundant materials in the various agro-ecological zones of Cameroon.

Intoxicação é definida como a exposição do organismo a agentes tóxicos, entre esses, os medicamentos que quando utilizados em doses além daquelas que possuem efeito terapêutico, provocam manifestações com sinais e sintomas decorrentes das alterações bioquímicas e funcionais no corpo. Este estudo trata-se de uma revisão de literatura do tipo sistemática objetivando definir qual o perfil das intoxicações e óbitos por medicamento e suas principais causas de ocorrência no Brasil. Foram encontrados 10 artigos sobre intoxicação medicamentosa no Brasil que atendiam aos objetivos da pesquisa.