Estudo de sistemas de producao de bovinos de corte - fase de cria - no Pantanal Mato-Grossense.

Este trabalho objetiva, atraves da simulacao, verificar o efeito de alteracoes nas taxas de mortalidade do rebanho, com enfase para bezerros, sobre o desempenho fisico e economico de uma propriedade hipotetica, considerada representativa do sistema tradicional de cria de bovinos de corte no Pantanal Mato Grossense. Alem disso, estima o maximo gasto possivel para atingir essas mudancas. Em segunda parte do trabalho sao propostos dois sistemas de producao alternativos, dentre outros possiveis, que se consideram capazes de atender ao objetivo de reducao de taxas de mortalidade do rebanho, observando os limites financeiros estabelecidos. O autor argumenta que, sob qualquer angulo que se queira enfocar a elevacao dos indices de produtividade da exploracao pecuaria no Pantanal Mato Grossense, torna-se imprescindivel considerar modificacoes de manejo. E, para que isso se torne viavel, faz-se necessario dispor de subdivisoes racionais na propriedade, de melhor administracao e mao-de-obra suficiente para assegurar adequada assistencia ao rebanho. Sem o atendimento destes requisitos basicos persistirao ainda por muito tempo as condicoes atuais de subutilizacao do potencial pecuario da regiao.bitstream/item/40880/1/CT02.pd

Comportamento de cultivares de alface no Território Federal do Amapá.

Visando identificar cultivares de alface capazes de produzirem economicamente nas condições edafoclimaticas do Território Federal do Amapá, estão sendo conduzidos, no Campo Experimental de Fazendinha da UEPAT de Macapá, ensaios de avaliação de diversas cultivares desta hortaliças.bitstream/item/65084/1/AP-1986-comportamento-cultivares-alface.pd

Avaliação de cultivares e hibridos de pepino no Amapá.

Objetivando avaliar o comportamento e produtividade de diversas introduções de pepino nas condições edafoclimaticas do Amapá, foram conduzidos no Campo Experimental de Fazendinha, da UEPAT de Macapá, três ensaios de avaliação desta importante hortaliça.bitstream/item/65086/1/AP-1986-avaliacao-cultivares-hibridos-pepino.pd

Numerical model to evaluate the protected and unprotected wooden slabs under fire

The main goal of this study is to evaluate the thermal behaviour of wooden cellular slabs exposed to fire conditions, according the standard ISO 843 curve. Different numerical simulations for nonlinear thermal and transient analysis will be obtained, using the finite element method. The importance of this study relies on its contribution to an alternative numerical methodology, which allows to determine the safety and fire resistance levels in wooden cellular slabs, with or without insulation materials.info:eu-repo/semantics/publishedVersio

Scrubbing process of the Miltonia 3 bauxite. Part 2: Mathematical modeling

O objetivo desse trabalho foi desenvolver um modelo matemático empírico para a operação de escrubagem da bauxita proveniente da jazida Miltônia 3, da Mina de Bauxita de Paragominas-PA, com vistas a fornecer parâmetros para previsão de seu desempenho e otimização. O modelo foi desenvolvido a partir de dados gerados em uma campanha de experimentos de escrubagem, em um tambor desagregador de laboratório, tomando-se, como base, o planejamento fatorial. A variável de resposta selecionada foi a quantidade de finos (partículas menores que 0,037 mm), no produto desagregado, sendo que tal quantidade foi relacionada com o grau de enchimento e com o tempo de residência da polpa através do modelo proposto. O modelo desenvolvido foi validado através da comparação entre os valores obtidos em ensaios de escrubagem, em uma unidade-piloto, e aqueles previstos pelo modelo. Os valores da quantidade de finos, no produto desagregado, previstos pelo modelo apresentaram uma excelente aproximação com os dados experimentais da operação em escala-piloto, visto que a maioria dos valores ficou dentro de uma faixa de ±10% desvio.The aim of this study was to model the bauxite scrubbing of bauxite samples from Miltonia 3, a Vale operation at Pará state, Brazil. The experimental program included the design of a standard laboratory test, from which parameters were derived for predicting the operation of a scrubber in steady state conditions. The amount of fines was determined through screening both feed and product of the scrubbing test. The former was considered as a material characteristic, while the second was the dependent variable, i.e. the result of the scrubbing process. An empirical model was developed according to which the load fraction was found to be the most important variable for the scrubbing process. Residence time was also included in the model due to its importance in designing scrubbers for industrial plants. To validate the model, a comprehensive pilot plant program was carried out with the same bauxite sample from Miltonia 3 deposit used in the laboratory investigations. The comparison between experimental data and model's calculated values indicated a good agreement, as most values were within a ±10% deviation range

Periapical cyst repair after nonsurgical endodontic therapy : case report

This article presents the procedures that must be considered for periapical cyst repair after nonsurgical endodontic treatment. The case of a periapical cyst associated to the left maxillary lateral incisor is reported. Nonsurgical root canal therapy was performed and lesion healing was confirmed radiographically after 24 months. Differential diagnosis, endodontic infection control, apical foramen enlargement and filling of the cystic cavity with a calcium hydroxide paste were important procedures for case resolution

Structuring a System Dynamics Model using Group Model Building : Case Study on Flight Test Human Resources

This paper presents a method that allows capture and organization of mental models of all levels of Stakeholders in order to elaborate a System Dynamics Model closer to the reality and more effective on Strategy proposition. This is done through information raised on the application of Group Model Building (GMB), and using PSM specific tools, like Mental Maps and Cognitive Maps. All these tools allow merge opinions and elicitate knowledge from many stakeholders involved on the process. In order to demonstrate the method?s suitability, it was applied on a Case Study to develop a System Dynamics Model for the Flight Test Specialized Human Resources Career Flow. The method has five stages: first, recognize the Messy Situation; second, identify process Stakeholders; third, conduct Workshops and interviews applying Cognitive Maps and, then, GMB; forth, build collective maps presenting a collective point of view for all parts; fifth, build a System Dynamics Model effective and recognizable for all involved Stakeholders, ready to be used as a tool to Strategy proposition to solve the Messy Situation. Flight Test Specialized Human Resources Case Study results show both the model?s effectiveness and stakeholder commitment, based on the proposed method, proving its adequacy

University rankings: between market regulation and the diffusion of organizational models. The Brazilian case

  In this paper two of the better-known university rankings produced internationally are considered, the Academic Ranking World Universities (ARWU) and the Times Higher Education World Universities Rankings (THE), as well as a national ranking, the Folha University Ranking (RUF), focussed on Brazilian universities. The thesis we put forward is that rankings play a dual role, regulating the market and disseminating organizational models. The paper highlights the existence of differences between the concerns (and implications) of the international rankings (ARWU and THE) and the Brazilian national ranking (RUF), which sets out as main goals, on the one hand, to steer the elites’ demand for tertiary education towards degrees with higher employability and, on the other, to provide indications which may be considered useful for the labour market to recruit better qualified professionals. Keywords: Brazil; universities; rankings; regulation; labour market