Orientador: Paulo Henrique de Mello Sant¿Ana / Dissertação (mestrado) - Universidade Federal do ABC. Programa de Pós-Graduação em Energia, 2013

Made available in DSpace on 2016-12-23T14:04:29Z (GMT). No. of bitstreams: 1 0 - Capa.pdf: 105732 bytes, checksum: 5e46db0b866feec4239711c3d7a7f02f (MD5) Previous issue date: 2007-06-06 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The process of treatment for wastewater produces solid waste that need to be constantly removed for to keep the treatment s efficiency, amongst it, the waste deposited in the deep of the grit removal. The grit removal has the objective of to remove from wastewater the grit and others particulas, including the organics, presents in the wastewater in nature, that to be dragged to the deep by sedimentation process. Although not to be to receive had importance, a time that is to embed this waste in ditches or to make use in the ground without treatment, currently, this waste it is starting to be a problem in management of stations in what it is mentioned to handle, treatment and final destination, had requirements by sanitation s companies. Had necessity of to search new sources of attainment of grit, the grit removal waste it could be an option to be use in the civil construction since either carried through the disinfection of the material. The objective this work it was to evaluate the efficiency of the lime stabilization and the natural insolation in the disinfection of the grit removal waste through evaluation in the reduction of the bacteria to coliform group and helmintos eggs. The methodology used in this work has 2 stages. In the first stage, Preliminary Study, search to know the physics and microbiological characteristic s of the grit, to develop procedures to collect and mount of the experiments and to test process of disinfection through to lime stabilization, chlorination and natural insolation. In the second stage, Pilot Study, evaluated the efficiency to lime stabilization in the disinfection through of the repetition to experiments. As results, the lime stabilization to leave of the dosage to 10% it can be considered efficient in removal to bacterial and helmintos eggs after one week of the treatment and the dosage to leave to 15% efficient after 48 hours of the treatment and the preliminary analysis searching to use the disinfection grit demonstrate to be viable your application in the civil construction and guarantee the security in the handle, transport and final destination. / O processo de tratamento de esgoto doméstico gera resíduos sólidos que precisam ser constantemente removidos afim de se manter a eficiência do tratamento, dentre eles, o resíduo depositado no fundo das caixas de areia. A caixa de areia tem como objetivo remover do esgoto areia e outras partículas, incluindo as orgânicas, presentes no esgoto in natura, que através do processo de sedimentação são arrastadas para o fundo. Apesar de não receber a devida importância, uma vez que a prática é enterrar este resíduo em valas ou dispor no solo sem tratamento, atualmente, este resíduo passou a ser considerado um problema no gerenciamento de estações no que se refere ao manuseio, tratamento e destinação final, devido a exigências por parte das empresas de saneamento. Visto a necessidade de buscar novas fontes de obtenção de areia, o resíduo de caixa de areia poderia ser uma opção a ser utilizada na construção civil desde que seja realizada a higienização prévia do material. O objetivo deste trabalho foi avaliar a eficiência da caleagem e da insolação natural na higienização do resíduo de caixa de areia através da avaliação da redução de bactérias do grupo coliforme e de ovos de helmintos. A metodologia adotada neste trabalho possui 2 etapas. Na primeira etapa, Estudos Preliminares, buscou-se conhecer as características físicas e microbiológicas da areia, desenvolver procedimentos de coleta e montagem dos experimentos e testar processos de higienização através da caleagem, cloração e insolação natural. Na segunda etapa, Estudo Piloto, avaliou-se a eficiência da caleagem na higienização através da repetição de experimentos. Os resultados obtidos permitiram constatar a eficiência da caleagem na higienização do resíduo de caixa de areia a partir da dosagem de 10% pode ser considerada eficiente na remoção de bactérias e ovos de helmintos após uma semana de tratamento e a dosagem a partir de 15% eficiente após 48 horas de tratamento e as análises preliminares visando utilizar a areia higienizada demonstram ser viável sua aplicação na construção civil sob o ponto de vista sanitário, e garantem a segurança do manuseio, transporte e destinação final.

Orientador: Mauro Dal Secco de Oliveira / Banca: Flávia Fernanda Simili / Banca: Luiz Carlos Roma Júnior / Banca: Atushi Sugohara / Banca: Paulo de Figueiredo Vieira / Resumo: Este trabalho teve como objetivo estudar as diferentes proporções de cana-de-açúcar hidrolisada e silagem de milho na alimentação de vacas leiteiras através da composição bromatológica, consumo de nutrientes, digestibilidade in vitro, parâmetros sanguíneos, produção de leite, composição do leite e avaliação econômica parcial das dietas. Foram utilizadas oito vacas da raça Holandesa, distribuídas em dois quadrados latinos 4 x 4, com quatro períodos de 19 dias cada, sendo 14 dias de adaptação e cinco dias de coleta. As vacas foram alimentadas com dietas contendo 100% de cana-de-açúcar hidrolisada (CH); 70% de CH + 30% de silagem de milho (SM); 50% CH + 50% SM; e 100% SM. O concentrado foi fornecido na proporção de 1 kg para cada 2,5 kg de leite produzido. A cana-de-açúcar utilizada foi a IAC 862480 com 12 meses de crescimento, picada no tamanho de partícula de 8 mm, hidrolisada com 0,5% de cal hidratada (95% de hidróxido de cálcio) + 2,0 litros de água + 100kg de cana-de-açúcar picada, com base na matéria natural. As dietas com cana-de-açúcar hidrolisada como único volumoso e as dietas com 70% CH + 30% SM causaram menor consumo de matéria seca, proteína bruta e de nutrientes digestíveis. A menor digestibilidade in vitro da fibra em detergente neutro foi de 34,92% para a dieta com 100% cana-de-açúcar hidrolisada. As produções de leite e as produções de leite para 3,5% de gordura (PL3,5%G) diminuíram linearmente (P<0,05) com associação das proporções de cana-de-açúcar hidrolisada à silagem de milho nas dietas. A composição do leite, os níveis de glicose, proteína total, colesterol total e gama-glutamiltransferase não foram influenciados pelas diferentes proporções de cana-de-açúcar hidrolisada nas dietas (P>0,05). As dietas com cana-de-açúcar hidrolisada apresentaram melhor custo/beneficio. Embora todas as proporções possam ser utilizadas, recomenda-se a associação de ... / Abstract: This study aimed to evaluate chemical composition, nutrient intake, in vitro digestibility, blood parameters, milk production, milk composition and partial economic evaluation of dairy cows fed diets with different proportions of sugarcane hydrolyzed with hydrated lime and corn silage. Eight Holstein cows, designed into two 4 x 4 Latin Squares with four periods of 19 days each, 14 days of adaptation and five days of data collection. The cows were fed with diets containing 100% hydrolyzed sugarcane (HS); 70% HS + 30% corn silage (CS); 50% HS + 50% CS; and 100% CS. The concentrate was supplied at the rate of 1 kg for every 2.5 kg of milk. The sugarcane used was IAC 862480 with 12 months of growth, particle size of 8 mm, hydrolyzed with 0.5% hydrated lime (≥ 95% calcium hydroxide) + 2,0 liters water + 100 kg chopped sugarcane, based on natural matter. Diets with hydrolyzed sugarcane as the only forage and diets with 70% HS + 30% CS decreased dry matter, crude protein and digestible nutrients intake. The lower in vitro neutral detergent fiber digestibility was 34.92% for the diet with 100% hydrolyzed sugarcane. Milk yield and 3.5% fat-corrected milk yield decreased linearly (P<0.05) as corn silage was being replaced hydrolyzed sugarcane in diets. The milk composition, the levels of glucose, total protein, total cholesterol and gamma-glutamyltransferase were not influenced by different proportions of hydrolyzed sugarcane in the diets (P>0.05). Diets with hydrolyzed sugarcane showed better cost-benefit. Although all proportios can be used, it's recommended the combination of 50% of the corn silage and hydrolyzed sugarcane due to reach results closer to corn silage and reduce the cost of the kilogram of milk / Doutor

Este trabalho tem como objetivo estudar, a partir de ensaios de laboratório, o comportamento mecânico de misturas de fosfogesso e cal destinadas à construções de bases e sub-bases rodoviárias. O fosfogesso é um resíduo resultante da produção do ácido fosfórico, principal componente de fertilizantes fosfatados. O fosfogesso é gerado em grande escala, originando sérios problemas de armazenagem. Restrições de leis ambientais e o aumento do custo de espaço para a armazenagem do fosfogesso têm estimulado pesquisas para a aplicação desse material. Entre as pesquisas, encontra-se, o aproveitamento desse resíduo como material de construção de bases e sub-bases rodoviárias. As amostras destas misturas foram submetidas a ensaios de compressão simples, compressão diametral e CBR. Nos ensaios de compressão simples e compressão diametral, os corpos de prova foram ensaiados sem imersão e após imersão prévia em água por quatro horas. Para todos os teores de cal utilizados (0%, 3%, 5%, 7% e 10%) os corpos-de-prova foram compactados na energia equivalente ao Proctor modificado. Para cada teor de cal os corpos-de-prova passaram por processo de cura de 0, 3, 7 e 28 dias. Quatro réplicas foram moldadas para cada condição de ensaio, obtendo-se a média dos resultados pelo método estatístico de GRUBBS. Concluiu-se com esses ensaios que valores crescentes de tempo de cura e de teor de cal conduziram a maiores valores de resistência e de rigidez. Além disso, ensaios realizados após a imersão em água apresentaram valores de resistência à compressão simples, resistência à compressão diametral e rigidez menores do que os obtidos sem imersão. Observou-se também que as misturas de fosfogesso e cal, no geral, apresentaram melhores resultados de resistência à compressão simples, resistência à compressão diametral e coesão do que as misturas de solo cal. Entretanto as misturas compostas por fosfogesso e cimento obtiveram valores superiores de resistência e rigidez se comparada com as misturas de fosfogesso e cal. / This work has the aim of study, considering laboratory experiments, the mechanical behavior of a mixture of phosphogypsum and lime to be used in bases and sub-bases of road construction. The phosphogypsum is a solid waste result of the phosphoric acid production, main component of phosphor fertilizers. The phosphogypsum is generated in large scale, causing serious problems of storage. Restriction of environment laws and the increasing cost of the area needed for the phosphogypsum storage have stimulated researches to this material application. Among these researches, there is the reutilization of this waste as construction material of road bases and sub-bases. The samples of theses mixtures were submitted to tests of unconfined compressive strength, indirect tensile strength and California bearing ratio. In the tests of unconfined compressive strength and indirect tensile strength, the specimens were submitted to two test conditions: without immersion and with immersion in water for four hours. It was used 0%, 3%, 5%, 7% e 10% of lime in the mixtures. All specimens were compacted in the energy modified Proctor. Each specimens get through to a process of curing time of the 0, 3, 7 and 28 days. For each condition test 4 copies were molded and the result got by the statistic method of GRUBBS. With this tests, it was concluded that higher values of time of cure and the line content led to higher strength and stiffness values. Besides, test performed after immersion in water presented strength values for the unconfined compressive, diametral compression strength and stiffness lower than those obtained without immersion. It also can be observed that phosphogypsum and lime mixtures got better results of unconfined compressive strength and diametral compression strength than soil and lime mixtures. However, phosphogypsum and cement mixtures got better results of strength and stiffness than phosphogypsum and lime mixtures.

A técnica de tratamento de solos com cal ou cimento vem sendo empregada com sucesso na engenharia geotécnica, melhorando as características do solo, que por ser um material complexo e muito variável nem sempre satisfaz as necessidades da obra a ser realizada. As últimas pesquisas em solos tratados com cal mostram o desenvolvimento de metodologias de dosagem baseadas em critérios racionais (como a relação água/cimento para o concreto), onde a relação volume de vazios/volume de cal desempenha papel fundamental na obtenção da resistência desejada. O volume de vazios (ou a porosidade) é um fator importante nestas metodologias de dosagem, e ainda não existem técnicas que quantifiquem este fator (como o ensaio de porosimetria por injeção de mercúrio para o concreto) e também modelos que permitam o entendimento do comportamento da porosidade dessas misturas o longo do tempo de cura (como o modelo de Powers para o concreto). Assim, esta pesquisa tem como objetivo verificar a influência da quantidade de cal (Ca), da porosidade (h), do teor de umidade (w) e do tempo de cura (t), sobre a resistência à compressão simples (qu), sobre a resistência à tração (qt) e sobre a rigidez inicial (Go) de um solo siltoso estabilizado com cal (misturas caulim-cal), verificando a adequação do uso da relação vazios/cal na estimativa de qu, qt e Go. Além disso, esta pesquisa busca quantificar a porosidade dessas misturas solo-cal e também desenvolver um modelo, que permita o entendimento do comportamento da sua porosidade ao longo do tempo de cura. Para atingir os objetivos da pesquisa foram realizados ensaios de resistência à compressão simples, ensaios de resistência à tração por compressão diametral, ensaios para a medida de Go, ensaios de sucção matricial e ensaios de porosimetria por injeção de mercúrio. Os resultados dos ensaios de resistência à compressão simples, de resistência à tração e de rigidez inicial demonstram que o aumento da quantidade de Ca, a diminuição da h e o aumento do t provoca o aumento de qu, qt e Go. Sendo que, qu, qt e Go crescem linearmente com o aumento da quantidade de cal e exponencialmente com a redução da sua porosidade. Assim, verifica-se que, a relação vazios/cal (h/Cav), definida pela razão entre a porosidade da mistura compactada e o teor volumétrico de cal, demonstra ser um parâmetro adequado na estimativa de qu, qt e Go. A partir desses mesmos resultados, observase que a w também desempenha um papel fundamental na previsão de qu, qt e Go. Além disso, a partir dos ensaios de resistência à compressão simples, resistência à tração e rigidez inicial, observa-se que a existência de relações únicas e distintas no controle de qu, qt e Go em função da h, do Cav e da w mostrou-se muito eficiente para relações de dosagem. Relações entre qu, qt, Go e h/Cav também, foram muito satisfatórias. Além disso, foram realizadas análises estatísticas dos dados obtidos neste experimento, e os resultados demonstram, a partir da análise da variância, que todos os fatores controláveis escolhidos no experimento são significativos. Os resultados dos ensaios de porosímetro por intrusão de mercúrio demonstram que a porosidade diminui com o tempo de cura. Porém, o modelo de Powers não se adaptou perfeitamente na previsão da variação da porosidade das misturas caulim-cal estudadas. / The technique of treating soil with lime or cement has been used successfully in geotechnical engineering, improving the characteristics of the soil, which is a highly variable and complex material, and does not always meet the needs of the earthwork to be performed. The last researches in soils treated with lime are in the development of dosage methodologies based on rational criteria (such as water/cement ratio for concrete), where the voids/lime ratio plays a fundamental role in the assesstment of the target strength. The void volume (or porosity) is an important factor in these dosage methodologies, and there are not techniques that quantify this factor (as the test porosimetry with intrusion of mercury, for concrete) and also models that allow understanding the behavior of porosity for these mixtures in long curing times (such as the Powers’s model for concrete). Thus, this research aims to determine the influence of the amount of lime (Ca), porosity (h), moisture content (w) and curing time period (t) on the unconfined compression strength (qu), tensile strength (qt) and initial stiffness (Go) of a silty soil stabilized with lime (kaolin-lime mixtures), checking the suitability of the use of voids/lime ratio in estimating qu, qt and Go. Besides, this research aims to quantify the porosity of these soil-lime mixtures and also adjusting a model that allows understanding the behavior of their porosity during the curing time. For that, a number of unconfined compression tests, splitting tensile tests, the measurement of Go, measurement of matric suction and porosimetry with intrusion of mercury tests were carried out in present work. The results of unconfined compression strength, tensile strength and initial stiffness show that increasing the amount of Ca, decreasing of h and increasing of t, causes increased of qu, qt and Go. Further, qu, qt and Go grow linearly with the increased amount of lime and exponentially with reducing its porosity. The voids/lime ratio, defined as the ratio of the compacted mixture porosity and the lime volumetric content, adjusted by an exponent, proves to be an appropriate parameter to estimate the qu, qt and Go. From these results, it is observed that the w also plays a fundamental parameter in predicting the qu, qt and Go. Moreover, it is noted that the existence of distinct and unique relationships in the control of qu, qt and Go according to h, Cav and w proved to be very efficient for dosage relationships. Relations between qu, qt, Go and h/Cav were very satisfactory too. Furthermore, statistical analyzes were performed of the results obtained in this experiment, and results demonstrate, through analysis of variance, that all controllable factors chosen in the experiment are significant. The results of test porosimetry with intrusion of mercury show that the porosity decreases with increasing curing time. However, the Powers’s model has not adapted perfectly to predict the variation of the porosity of kaolin-lime mixtures studied.

Este documento não tem folha de rosto / Tese de mestrado. Mecânica dos Solos e Engenharia Geotécnica. Faculdade de Engenharia. Universidade do Porto. 2009

An improved Short-Open-Load-Thru (SOLT) on-wafer vector network calibration method for broad-band accuracy is proposed. Accurate measurement of on-wafer devices over a wide range of frequency, from DC to high frequencies with a minimum number of space conservative standards has always been desirable. Therefore, the work is aimed at improving the existing calibration methods and suggesting a best "practice" strategy that could be adopted to obtain greater accuracy with a simplified procedure and calibration set. Quantitative and qualitative comparisons are made to the existing calibration techniques. The advantages and drawbacks of each calibration are analyzed. Prior work done at the University of South Florida by an improved SOLT calibration is briefed. The presented work is a culmination and refinement of the prior USF work that suggested that SOLT calibration improves with more complex definitions for the calibration standards. Modeling of the load and thru standards is shown to improve accuracy as the frequency variation of the two standards can be significant. The load is modeled with modified equivalent circuit to include the high frequency parasitics. The model is physically verified on different substrates. The relation of load impedance with DC resistance is verified and its significance in SOLT calibrations is illustrated. The thru equation accounts for the losses in a transmission line reflections and phase shift including dielectric and conductor losses. The equations used are important for cases where a non-zero length of thru is assumed for the calibration. The complex definitions of the calibration standards are included in the calibration algorithm with LabView and tested on two different VNA's -- Wiltron 360B and Anritsu Lightning. The importance of including the forward and reverse switch terms error correction in the algorithm is analyzed and measurements that verify the improvement are shown. The concept using same foot size calibration standards to simplify the calibration process is highlighted with results to verify the same. The proposed technique thus provides for calibration strategy that can overcome the low frequency problems of TRL, retain TRL accuracy at high frequencies while enabling the use of a compact common footprint calibration set.

Esta investigación, estudia el efecto que produce el cemento, cal, geomalla y principalmente la ceniza de madera como componente mejorador de un suelo arcilloso, con el fin de evaluar las deformaciones verticales en la subrasante de un pavimento convencional a los 7 y 21 días de cura. La ceniza de madera es un residuo que proviene de la quema de materiales orgánicos en los hornos de las ladrilleras artesanales presentes en todo el Perú, los cuales el carbón, aserrín y madera, son los más utilizados. La disposición de éste material, genera problemas ambientales. Se realizaron ensayos de laboratorio para caracterizar la ceniza de madera, la mezcla de arcilla-ceniza, la mezcla arcilla-cemento, arcilla-cal y el refuerzo con la geomalla para luego modelarlo con la ayuda de la herramienta computacional Plaxis 8.2, software de elementos finitos, y obtener las deformaciones verticales. Se comprueba que con la geomalla biaxial se obtuvieron las menores deformaciones seguido por la mezcla arcilla-cemento. Con respecto a la arcilla-ceniza (21 días) se obtuvo un comportamiento similar a la mezcla de arcilla-cal (7días) siendo este resultado muy significativo ya que la ceniza al ser un material residuo de las ladrilleras puede llegar a un comportamiento mecánico tan igual como la cal. / This research studies the effect produced by cement, lime, geogrid and mainly wood ash as an improving component of a clayey soil, in order to evaluate the vertical deformations in the subgrade of a conventional pavement at 7 and 21 days after cure. Wood ash is a residue that comes from the burning of organic materials in the kilns of artisanal brickmakers present throughout Peru, which coal, sawdust and wood, are the most used. The disposition of this material generates environmental problems. Laboratory tests were carried out to characterize the wood ash, the clay-ash mixture, the clay-cement mixture, the clay-lime and the reinforcement with the geogrid, and then model it with the help of the computer tool Plaxis 8.2, elements software finite, and get the vertical deformations. It is verified that with the biaxial geogrid the smallest deformations were obtained followed by the clay-cement mixture. With respect to ash-clay (21 days) a behavior similar to the clay-lime mixture (7 days) was obtained, this result being very significant since the ash being a material residue of the brickworks can reach such a mechanical behavior just like lime. / Tesis

”Terrorism” is a term widely used today. It and its effects are portrayed and discussed innewspapers, in movies, on TV. Seeing as it seems to be present in most media, it appears quite inevitable that terrorism has also found its way into literature. Two examples of novels dealing with terrorism are the American novel Terrorist, written by John Updike in 2006 and Bernard MacLaverty's Northern Irish novel Cal, written in 1983. The novels have their similarities. They share terrorism as a major theme, and both of them have a young man as a protagonist. However, they differ in both time and place. Updike's novel is set in a post-9/11 New Jersey, while Cal takes place in a Northern Ireland divided by The Troubles. Furthermore, Updike's main character is a dedicated Muslim, while the main character of Cal is a not as dedicated Catholic. Indeed, the novels might seem similar at first, but the differences are significant.The perspective to be used in this essay is ethnic. Various theories on terrorism, manipulation and race will be used with said perspective in mind. The aim is to, with the help of relevant theories, examine and analyse the terrorism and its connection to religion and ethnicity in the two novels, in order to compare them and find out whether they portray these things in a different way or not. The question I will be asking, and thus the purpose of this essay, is whether the terrorismand its reasons, organisation – including influence by others – and connection to religion and ethnicity in the two novels mentioned above are similar or not. It is my belief that a comparative analysis of the novels will show that the terrorism and its connection to religion and ethnicity will not be the same in Cal as in Terrorist. One of the reasons for this is that they are set in environments that differ from each other not only geographically and chronologically, but also politically. Thus it seems likely that the reasons for and organisation of the terrorism will differ as well. Another reason is that the characters in Terrorist are more diverse than the ones in Cal, both in terms of religion and ethnicity. General theories dealing with reasons for terrorism, such as Kristopher K. Robison, Edward M. Crenshaw, and Craig J. Jenkins's theory on Islamist terrorism, according to which terrorism performed by Islamists is a reaction to the secular West (p. 2012), and Jeff Victoroff's rational choice theory, which suggests that terrorists are rational (p. 14), will be used to examine whether the characters of the two novels have different reasons for their terrorism or not.The next set of theories that will be used deal with influence, manipulation and brainwashing. Austin T. Turk suggests that a terrorist organisation often isolates its members inorder to ensure that they only have the required knowledge (p. 276), and since this can be used as a tool of manipulation, his theory will be used to examine, and compare, the level of influence and manipulation on the two protagonists. For similar reasons, I. E. Farber, Harry F. Harlow, Louis Jolyon West and Joel Rudinow's theories on manipulation, with and without deception, will be used in the comparative analysis. Finally, racial theories, like the theory of signs, which suggests that people have a tendency to divide others into categories based on their racial differences, along with theories on imperative patriotism and the Arab American stereotype will be used. According to Steven Salaita's imperative patriotism, only those who act and look American can be truly American (p. 154), and Jack G. Shaheen suggests that Arab Americans are, by many, thought to be violent Muslims (p. 23). Furthermore, analysts Mita Banerjee and Pamela Mansutti both suggest that there is in fact a connection between religion and race in Updike's novel (p. 16, p. 108). These theories and ideas will be used to analyse the connection between terrorism, ethnicity and religion, and then to compare the two novels, whereupon a conclusion will be drawn. I believe that this conclusion will indeed confirm my thesis.

Made available in DSpace on 2014-06-11T19:32:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-11-19Bitstream added on 2014-06-13T21:05:22Z : No. of bitstreams: 1 missio_rl_dr_jabo.pdf: 805386 bytes, checksum: fd72382d10b76ace86d683f99af93f1d (MD5) / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Este estudo objetivou avaliar o armazenamento da cana-de-açúcar hidrolisada com 0,5% de cal hidratada sobre o consumo das frações alimentares, desempenho animal, viabilidade econômica, comportamento ingestivo, características nutritivas da forragem e aspectos da digestão de novilhas confinadas. Foram realizados dois experimentos. No primeiro (Capítulo 2 e 3), foram utilizadas 24 novilhas da raça Nelore distribuídas inteiramente ao acaso nos tratamentos formados por dietas com cana-de-açúcar in natura (tempo zero), cana-de-açúcar hidrolisada e armazenada por 24, 48 ou 72 horas. No segundo (Capítulo 4), foram utilizadas quatro novilhas da raça Nelore delineadas num quadrado latino 4x4, onde foram avaliadas as dietas anteriormente descritas. No primeiro experimento, verificou-se variação cúbica (P < 0,05) em função do tempo de armazenamento da cana-de-açúcar da maioria das variáveis relacionadas ao consumo das frações alimentares e desempenho animal, apresentando melhores resultados para novilhas alimentadas com cana-de-açúcar in natura. O armazenamento da cana-de-açúcar até 72 horas proporcionou aumento linear (P < 0,05) da fração de carboidratos potencialmente degradáveis e diminuição dos custos de produção. Novilhas alimentadas com dietas a base de cana-de-açúcar in natura apresentaram maior tempo de ruminação (P < 0,05). No segundo experimento, verificou-se que o consumo e digestibilidade dos nutrientes, o balanço de nitrogênio, a eficiência de síntese de proteína microbiana e o nitrogênio amoniacal não foram influenciados (P > 0,05) pelas dietas. O armazenamento da cana-de-açúcar com adição de 0,5% de cal hidratada até 72 horas deprime o consumo e desempenho de novilhas jovens da raça Nelore / This study evaluated the effect of storage of hydrolyzed sugarcane with .5% hydrated lime the dietary fractions intake, animal performance, economic viability, ingestive behavior, nutritional characteristics of forage and digestion aspects of confined heifers. Two experiments were conducted. In the first (Chapter 2 and 3), 24 Nellore heifers were used and randomly distributed in treatment formed by diets constituted by fresh sugarcane (zero time), hydrolyzed sugarcane and stored for 24, 48 or 72 hours. In the second (Chapter 4), four heifers were used constituting a 4x4 latin square, with similar diets previous. In the first experiment, there was variation cubic (P < .05) according the storage time of most variables related to dietary fractions intake and animal performance, with better results for heifers fed with fresh sugarcane. Storage of sugarcane until 72 hours promoted linear increased (P < .05) in the carbohydrate fraction potentially degradable and decreased production costs. Heifers fed diets with fresh sugarcane presented higher time ruminating (P < .05). In the second experiment, it was found that the intake and digestibility of nutrients, the nitrogen balance, the efficiency of microbial protein synthesis and the ammonia nitrogen were not affected (P > .05) by diets. The storage of hydrolyzed sugarcane with .5% of hydrated lime up to 72 hours depresses intake and performance of young Nellore heifers