Made available in DSpace on 2014-06-11T19:29:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-09-01Bitstream added on 2014-06-13T19:39:01Z : No. of bitstreams: 1 pereira_lb_me_ilha.pdf: 689321 bytes, checksum: ec6adebedf189fab4567bbd27b4214f0 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O objetivo do trabalho foi determinar doses de nitrogênio e fósforo combinadas com cultivar e híbrido de mamona semeados no sistema plantio direto, e realizar análise econômica através de custos de produção e rentabilidade. O mesmo foi desenvolvido na Fazenda Experimental da UNESP – Campus de Ilha Solteira, localizada no município de Selvíria (MS), apresentando como coordenadas geográficas 51o 22’ W e 20o 22’ S, e altitude aproximadamente de 335 m, em LATOSSOLO VERMELHO Distroférrico, e o delineamento experimental foi de blocos casualisados. Os tratamentos foram constituídos pela combinação de um híbrido e um cultivar (Lyra e IAC-2028) respectivamente, 2 doses de fósforo (0 e 309 kg ha-1 de super fosfato simples) e 5 doses de nitrogênio (0, 15, 30, 60 e 120 kg ha-1 sulfato de amônio). A semeadura ocorreu em 07/06/2009, e a cultura foi irrigada pelo sistema de pivô central, utilizando o espaçamento de 0,9 m entre linhas e 0,9 m entre plantas. Conclui-se que a adubação nitrogenada e fosfatada aplicada na sua maior dose (120 kg ha-1) e (309 kg ha-1), respectivamente, obtiveram maiores produtividades, o híbrido ou cultivar não influenciaram a produtividade e o lucro operacional no tratamento mais oneroso foi negativo R$ -430,11/ha, apresentando a cultura uma dificuldade de subsistir nesse sistema de cultivo / The objective was to determine nitrogen and phosphorus combined with hybrid and the castor bean cultivar planted in conservation tillage, and carry through economic analysis of production costs and profitability. It was developed at the Experimental Farm UNESP - Single Island, located in Selvíria (MS), presenting as geographic coordinates 51 o 22 'W and 20 o 22' S, altitude approximately 335 m in Haplorthox. The experimental design was randomized blocks. The treatments were a combination of a hybrid and a cultivar (Lyra and IAC-2028) respectively, 2 P rates (0 and 309 kg ha-1 of single super phosphate) and five nitrogen rates (0, 15, 30, 60 and 120 kg ha-1). Sowing occurred on 07/06/2009 and crop was irrigated by center pivot system using the espaçamneto 0.9 m between rows and 0.9 m between plants. It is concluded that nitrogen and phosphorus applied in its highest dose (120 kg ha-1) and (309 kg ha-1), respectively, achieved higher yields, hybrid or cultivar did not influence the productivity and financial returns averaged approximately R $ 503.56 / ha, the economic viability of crop in this cropping system

Much of the world's oil and gas comes from continental platforms today, including the Atlantic marginal basins along the Brazilian coast. Campos Basin is the use of intense injection of seawater for secondary recovery and, as a consequence, there will be a significant increase in the amount of water produced in the coming decades. The injection and formation water are frequently incompatible under the chemical point of view, and hence its mixture may result in the appearance of salt precipitation in the reservoir, in the wellbore-formation interface, surface and subsurface equipments. The salt scales are undesirable sub products of secondary recovery by water injection. Traditionally, the water produced in offshore fields, after a treatment is discharged into the sea or possibly reinjected to maintain reservoir pressure. The aim of this dissertation was, from production/injection pattern, to study the formation of inorganic deposits in oil fields through evaluation of potential losses observed in producing wells, supporting information to aid in the optimization of schedules for future interventions recovery of well productivity. The study was conducted using a numerical simulator called InorscaleTM, with limitations such as: temperature (20 º to 125 º C), pH (5.5 to 8.5) and lower salinity than 200,000 ppm, based on chemicals and thermodynamic concepts from production history from five analyzed wells. The impact of inorganic scale in the productivity of these wells was demonstrated by the behavior of the productivity index (PI) according to the precipitated mass (PM) of the inorganic salts evaluated, as well as the saturation index (SI) as a function of seawater produced (SW). This study demonstrated that, for the same concentration of precipitated inorganic salt, the barite (BaSO4) represented a major damage to production, compared to other evaluated salts. This knowledge becomes imperative with regard to increasing costs and the complexity of the workover operations (recompletion and stimulation) in the producing wells. In this scenario, preventive action, in order to reduce costs of production, gains importance. / Grande parte da produção mundial de petróleo e gás vem hoje de plataformas continentais, incluindo as bacias marginais atlânticas da Costa Brasileira. Na Bacia de Campos é intensa a utilização da injeção de água do mar para recuperação secundária e, como consequência, haverá um significativo incremento da quantidade de água produzida nas próximas décadas. As águas de injeção e de formação são frequentemente incompatíveis sob o ponto de vista químico e, portanto, sua mistura pode causar o surgimento de precipitações salinas no reservatório, na interface poço-formação e nos equipamentos de superfície e de sub-superfície. As incrustações salinas são subprodutos indesejáveis da recuperação secundária por injeção de água. Tradicionalmente, a água produzida em campos marítimos, após algum tratamento, é descartada no mar ou, eventualmente, reinjetada para manutenção da pressão do reservatório. O objetivo geral desta dissertação foi, a partir de malhas de produção/injeção, estudar a formação de depósitos inorgânicos em campos petrolíferos através da avaliação das perdas de potencial observadas nos poços produtores, subsidiando informações que auxiliem na otimização das programações de futuras intervenções para a recuperação da produtividade dos poços. O trabalho foi desenvolvido utilizando um simulador numérico denominado InorscaleTM, com limitações como: faixa de temperatura (20º a 125ºC), pH (5,5 a 8,5) e salinidade menor que 200.000 ppm, baseado em conceitos termodinâmicos e químicos, a partir dos históricos de produção de cinco poços analisados. O impacto da incrustação inorgânica na produtividade destes poços foi demonstrado através do comportamento do índice de produtividade (IP) em função da massa precipitada (MP) dos sais inorgânicos avaliados, assim como pelo índice de saturação (IS) em função da água do mar produzida (AM). Este estudo demonstrou que, para uma mesma concentração de sal inorgânico precipitado, a barita (BaSO4) representou um dano maior à produção, em relação aos demais sais avaliados. Este conhecimento torna-se imperioso no tocante aos custos crescentes e complexos das operações de workover (estimulação e recompletação) nos poços produtores. Neste cenário, a ação preventiva, com o objetivo de reduzir os custos de produção, ganha importância.

Made available in DSpace on 2014-08-20T14:37:51Z (GMT). No. of bitstreams: 1 dissertacao_raquel_schiavon_schiavon.pdf: 257573 bytes, checksum: 125a6491b4a891d11375f18fb736ae73 (MD5) Previous issue date: 2012-02-28 / The different dairy production systems and heterogeneity of processes in Brazil has different inputs impact on production. The production system is one of the factors that may influence the cost and profitability. The aim of this study was characterize the different production systems in Central Eastern of Paraná and identify variables that can predict performance in different economic systems. Monthly data of area, economic and productive performance and dairy quality results of 50 farms records were collected. The collected indicators were referent the period from November 2008 to October 2010. The Kruskal-Wallis test and descriptive analysis were doing to characterize and compare the production systems. After a factor analysis was performed too and the results were used in the Linear Regression Analysis. The systems were very different, defining the properties between intensive and semi intensive production, according to size, zootechnical and economical indicators performance. The variables were then grouped into six factors, according to Factor Analysis. The Factor II was composed by Fat (%) and protein (%) variables and the Factor III by rate capacity (UA/ha) and Productivity (l/ha/year) variable. The Factor II and Factor III were significant (p<0.05) on prediction of dependent variable Price Paid (R$/l). The Linear Regression result showed that approximately 13% of price paid to producers can be attributed to fat and protein milk composition and yield properties. / O impacto dos insumos sobre a atividade leiteira varia em função da existência de diferentes modelos de produção e da heterogeneidade dos processos produtivos no Brasil. Entre os fatores que podem influenciar o custo e a rentabilidade está o tipo de sistema de produção. O objetivo do presente estudo foi caracterizar os diferentes sistemas de produção da região Centro-Oriental do Paraná e identificar as variáveis que podem predizer o desempenho econômico nos diferentes sistemas. Foram coletados registros mensais e gerados indicadores de tamanho e desempenho, econômico, zootécnico e resultado de qualidade do leite de 50 propriedades, referente ao período de novembro de 2008 a outubro de 2010. A análise descritiva e o Teste Kruskal-Wallis foram realizados para caracterizar e comparar os sistemas de produção. Logo após, uma Análise Fatorial foi executada e os resultados utilizados na Análise de Regressão Linear. Os sistemas apresentaram características distintas, definindo as propriedades entre intensivas e semi intensivas, de acordo com os indicadores de tamanho e desempenho, zootécnicos e econômicos. As variáveis foram então agrupadas em 6 Fatores, de acordo com a Análise Fatorial, sendo que o Fator II, formado pelo agrupamento das variáveis Gordura (%) e Proteína (%) e o Fator III, formado pelas variáveis Taxa de Lotação (UA/ha) e Produtividade (l/ha/ano) apresentaram efeito (p<0,05) sobre a predição da variável dependente Preço Pago (R$/l). A análise de regressão linear demonstrou que aproximadamente 13% do preço pago aos produtores na região Centro-Oriental do Paraná pode ser atribuído aos resultados de composição do leite quanto ao percentual de gordura e proteína e a produtividade das propriedades.

The subject of thesis is elaboration of a calculation model of a product, which will serve for the purposes of supply-demand management and customer acquisition. The calculation model is intended for engineering company, which can use it for calculation of simple to moderately complex products.

This thesis deals with the topic of nuclear energy. The Czech Republic is currently a net electricity exporter however this status will probably change in next few years because of growing electricity consumption and decommissioning of obsolete coal-fired power plants. Moreover, contemporary government declared that it won't approve any construction of new reactors stressing the importance of renewable sources of energy (in spite of their limited potential in the Czech Republic). The goal of this thesis is to answer the question whether nuclear energy can compete with other sources of energy and whether is it possible to satisfy growing electricity consumption under the conditions of the Czech Republic by any other source of electricity besides nuclear energy taking into account environmental aspects.

GÁŠEK Tomáš: The order processing by firm with usage of project management The project laboured within the field of study with the name "Production tech-nology and industrial management" describes some versions of the potential job order's progress in the manufactory at the firm "Speciální strojírna, a.s.". A customer asks for the batch production of the casts, that he will be order step by step for working in regular intervals. The part of the customer's plan is the optimalization of the production and the press of the price, that should be lower after the finishing of the production technology. Along with the correction of the price, a customer expects cutting of the delivery time with the fully quali-ty of the working. In the first version, without a wide preparation, is all working realized on the general-purpose machines. The second version focuses on the production with use of drilling jigs, that is constructed and produced by the firm itself. The input costs of this preparation at the production will be compensated with the major production times, that will be destage from the expensive borer to the cheaper drilling-machine. The last third version supposes setting of the CNC machining centres and therethrough it will be reach to huge saving of the major and minor production times by the working.

Manufacturing companies are increasingly compelled to optimize their machining processes for various reasons, such as improved cost effectiveness, tighter regulations and marketing advantages. Increasing energy costs in particular shift the reduction of energy consumption and the cost effectiveness of the production method more into the focus of corporate strategy. This is done by using the example of a turning process for the production of a tapered roller bearing. The main goal of this thesis can be identified as a detailed investigation of the energy consumption of certain turning machine. Further, different optimization approaches regarding energy efficiency are introduced taking under consideration tooling costs and machining time.

Increasing effectiveness of semi-tightening tips production on the Swissstyle lathes. Analysis of current status. Design of areas for improvement. Proposed measures in the form of changes in cutting conditions, changes in geometry of tool, or an alternative solution to the current situation. Technical and economic evaluation of the proposed measures.

Inhalt In diesem Beitrag wird die Kombination von virtuellen und experimentellen Methoden im Produktentwicklungsprozess am Beispiel einer Handhabungseinheit zur automatisierten Ablage technischer Textilien thematisiert. Um das Automatisierungspotenzial in den Fertigungsprozessen zum Aufbau von Faserverbundstrukturen zu erschließen, entwickelt das Institut für integrierte Produktentwicklung (BIK) seit längerem Handhabungseinheiten für technische Textilien. Eine automatisierte Fertigung soll die Reproduzierbarkeit und die Qualität von Bauteilen erhöhen, um z.B. den Beanspruchungen bei größer werdenden Rotorblättern von Windenergieanlagen gerecht zu werden. Ein weiteres Ziel der Automatisierung besteht in der Reduzierung von Prozesszeiten und Fertigungskosten, um den Fertigungsstandort Deutschland in Zukunft attraktiv zu gestalten. Die erfolgreiche Umsetzung der Produktentwicklung erfolgt am BIK unter kombinierter Anwendung von virtuellen und experimentellen Methoden. Insbesondere bei der Handhabung von technischen Textilien, deren biege- und schubweichen Materialeigenschaften nur mit hohem Aufwand in einer virtuellen Umgebung abgebildet werden können, ist das Durchführen von experimentellen Methoden bei komplex ablaufenden dynamischen Prozessen notwendig, um nicht vorhersehbares Materialverhalten zu identifizieren.

El presente trabajo de investigación plantea una propuesta de solución para la línea de procesamiento y empaque de paltas frescas para la empresa agroexportadora Expo de Sur SAC, empresa con más de 20 años en el negocio de la agroexportación de frutas y hortalizas frescas, que le permita aprovechar la infraestructura de proceso instala con el objetivo de procesar sus cítricos (mandarinas frescas). Cultivo en el que la empresa ha incursionado con el propósito de diversificar la oferta de su portafolio. La falta de disponibilidad de centros de procesamiento y empaque para cítricos en la provincia de Majes, región Arequipa, y las extensas distancias de recorrido que la fruta debe realizar hasta las empresas proveedoras del servicio de procesamiento y empaque en la ciudad de Ica. Asumiendo el demérito en la calidad de las materias primas con tasas de deshidratación del 2%, y con costos por servicios transporte y de procesamiento y empaque, y los precios altos por estos servicios, han impulsado la necesidad de la compañía en la mejora e implementación de su línea de proceso, evaluar su factibilidad y puesta en marcha de una línea de proceso y empaque multiproducto, que les permita adoptar estrategias de calidad, procesos y reducción de sus costos de operación. Priorizando la rentabilidad de sus cultivos de cítricos. Estos costos asumidos por las operaciones de transporte, calidad, y servicios contratados por parte de la empresa ascienden a montos que van de 142,400 dólares americanos hasta 382,500 dólares americanos, en un periodo de 5 años. La propuesta de valor seleccionada, línea de procesamiento y empaque multiproducto para paltas y cítricos, permite reducir los costos incurridos mencionados por estas operaciones. Así mismo, permite maximizar el uso de los equipos o activos de la compañía. Permitiendo establecer dos turnos de trabajo para cumplir con las necesidades de producción de la empresa. El proyecto seleccionado en el presente trabajo de investigación está basado en una inversión de US$ 147,866.80, distribuidos en 30% de aporte propio, y 70% mediante financiamiento bancario. Aporte de Inversionista: US$ 44,359.74 y un monto por financiar de: US$ 103,506.06 En el análisis del presente trabajo de investigación se identifica el valor actual neto económico (VAN), el cual se emplea como un indicador financiero del proyecto, con el objetivo de determinar su viabilidad, es decir, si luego de medir los flujos de ingresos y egresos del proyecto y descontar la inversión inicial queda alguna ganancia (VAN > 0). El proyecto es viable y rentable, pues arroja un VANE de 7,200,945.04 dólares americanos y un VANF de 7,274,886.90 dólares americanos, una TIRE de 406% y una TIRF de 1255%. / This research work presents a solution proposal for the fresh avocado processing and packaging line for the agro-export company Expo de Sur SAC, a company with more than 20 years in the business of agro-export of fresh fruits and vegetables, which allows Take advantage of the process infrastructure installed to process your citrus fruits (fresh mandarins). Crop in which the company has ventured to diversify the offer of its portfolio. The lack of availability of processing and packaging centers for citrus fruits in the province of Majes, Arequipa region, and the long distances that the fruit must travel to the companies that provide the processing and packaging services in the city of Ica. Assuming the demerit in the quality of raw materials with dehydration rates of 2%, and with costs for transportation and processing and packaging services, and the high prices for these services, have driven the need of the company in the improvement and implementation of their process line, evaluate their feasibility and start-up of a multi-product process and packaging line, which allows them to adopt quality strategies, processes, and reduction of their operating costs. Prioritizing the profitability of your citrus crops. These costs assumed by the transport, quality, and services contracted by the company amount to amounts ranging from 142,400 US dollars to 382,500 US dollars, in a period of 5 years. The selected value proposition, multiproduct processing and packaging line for avocados and citrus fruits, allows reducing the incurred costs mentioned by these operations. Likewise, it allows maximizing the use of the company's equipment or assets. Allowing to establish two work shifts to meet the production needs of the company. The project selected in this research work is based on an investment of US $ 147,866.80, distributed in 30% of its own contribution, and 70% through bank financing. Investor Contribution: US $ 44,359.74 and an amount to be financed of: US $ 103,506.06 In the analysis of this research work, the economic net present value (NPV) is identified, which is used as a financial indicator of the project, to determine its viability, that is, if after measuring the income flows and project expenses and discounting the initial investment is some profit (NPV> 0). The project is viable and profitable, as it yields a VANE of 7,200,945.04 US dollars and a VANF of 7,274,886.90 US dollars, an IRR of 406% and an IRR of 1255%. / Tesis