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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Elaboração de um estruturado de polpa de manga (Mangifera indica L. cv Tommy Atkins) parcialmente desidratada por osmose

Santos, Cristiane de Nazare Paes dos 03 August 2018 (has links)
Orientador: Nelson Horacio Pezoa Garcia / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos / Made available in DSpace on 2018-08-03T09:35:22Z (GMT). No. of bitstreams: 1 Santos_CristianedeNazarePaesdos_M.pdf: 29081722 bytes, checksum: 8522e809fa05f75fff2774693c536a0e (MD5) Previous issue date: 2003 / Resumo: Frutas tropicais como a manga, embora muito apreciadas por seu aroma e sabor são altamente perecíveis e requerem técnicas especiais para sua conservação e comercialização, inclusive para agregar-Ihes valor. O objetivo deste estudo foi obter um estruturado de fruta parcialmente desidratada por osmose, seguida de secagem convencional em estufa com circulação de ar, buscando manter suas características nutritivas e organolépticas. Como matéria-prima utilizou-se a manga (Mangifera indica L. cv Tommy Atkins). Para os ensaios de desidratação osmótica a pressão ambiente, foi utilizado um aparelho constituído de um tanque de polipropileno, trocador de vidro, bomba peristáltica e sistema de aquecimento. Os ensaios sob-vácuo foram conduzidos em aparelho de desidratação osmótica com circulação natural, munido de trocadores de calor, bomba de vácuo e sistema de aquecimento. No processo de desidratação osmótica, os parâmetros tempo e temperatura foram otimizados através de Metodologia de Superfície de Resposta (RSM), objetivando maximizar a perda de umidade e minimizar a incorporação de sólidos. O agente desidratante utilizado foi solução de sacarose na concentração de 65% mim. Testes preliminares realizados com antioxidantes não mostraram resultados que justificassem o seu uso, especificamente na secagem complementar por ar quente. As melhores condições de processamento variaram entre 90 e 165 minutos a 30°C obtendo nestas condições até 40% de perda de água e incorporação de sólidos inferiores a 8%. A fruta in natura, desidratada e o estruturado de manga foram submetidos a análises físicas e químicas, microbiológicas e sensoriais. Os resultados obtidos nas determinações físicas e químicas no estruturado de manga foram: acidez (0,79), aw (0,583), pH (3,46), sólidos solúveis (74,5°Brix), umidade (23,11%), sólidos totais (76,89%), açúcares totais (71,28%) e açúcares redutores (23,52%). Foram observadas perdas de ácido ascórbico da ordem de 24,87% e 59,91% na fruta desidratada osmoticamente e no estruturado, respectivamente, com relação à fruta in natura. O produto desenvolvido apresentou-se apto para o consumo quanto à análise microbiológica conforme a legislação brasileira. Sensorialmente o produto obtido apresentou médias de aceitação próximas ou superiores a 7,0 para os atributos aroma, sabor, textura e aparência, situadas na escala hedônica nas categorias "gostei muito" e "gostei moderadamente", obtendo 87,31% da intenção de compra dos provadores que provável e certamente comprariam o produto se o encontrasse à venda. / Abstract: Tropical fruits like mango, although very appreciated because of its aroma and flavor, are highly perishable, thus special preservation techniques are necessary to keep them in good commercial conditions, even to add them more value. The aim of this work was to develop a fruit structured, partially osmotic dehydrated, followed by conventional drying at stove with air circulation in order to preserve de mango nutritive and sensorial characteristics. Mango (Mangifera indica l. cv Tommy Atkins) was used as raw material. In the osmotic dehydration trials, under atmosphere pressure, it was used an apparel consisting in a polypropylene tank, a pyrex exchanger, a peristaltic bomb and heating system. In the process of osmotic dehydration, the parameters time and temperature were optimized through Response Surface Methodology (RSM), aiming at maximizing the moisture loss and minimizing the incorporation of solids. The used osmotic agent was sucrose solution in the concentration of 65% w/w. Preliminary tests carried out with antioxidants showed no significant results to encourage its further use. Specifically in the complementarydrying process using hot air. The optimized conditions for the process ranged 90 to 165 minutes at 30°C, obtaining until 40% of water losses and incorporation of solids less than 8%. The mango structured as well as the dehydrated in natura fruit were submitted to physical and chemical, microbiological and sensorial analyses. The results obtained in the physical and chemical determinations in the mango structured were: acidity (0,79), aw (0,583), pH (3,46), soluble solids (74,5°Brix), moisture content (23,11%), total solids (76,89%), total sugars (71,28%) and reducing sugars (23,52%). When compared to to in natura fruit, losses of ascorbic acid ranging at 24,87% and 59,91% were observed in the fruit dehydrated by osmosis and in the obtained fruit structured, respectively. Microbiological analyses showed a final product, acceptable for the consumption, according to Brazilian legislation. In the sensory evaluation, the obtained product presented acceptance averages greater than or near to 7,0 for the attributes aroma, flavor, texture and appearance, located in the hedonic scale in the categories "Iiked a lot "and" liked moderately", obtaining 87,31% ofthe intention of purchase of the consumers who probably and certainly would buy the product if it were for sale. / Mestrado / Mestre em Tecnologia de Alimentos
42

Asociación entre la presencia de Helicobacter pylori y resultados adversos a corto y mediano plazo en adultos sometidos a gastrectomía en manga

Carrillo, Tammy, Jaramillo, María 13 October 2020 (has links)
Objetivo: Evaluar la asociación entre la presencia de H. pylori y sangrado en los primeros 30 días post operatorios de gastrectomía en manga. Diseño: Cohorte retrospectiva basada en un análisis de datos secundarios.
43

Caracterização molecular de híbridos obtidos via cruzamentos naturais e controle genético da resistência à murcha-de-Ceratocystis em Mangifera indica / Molecular characterization of hybrids obtained by natural crossings and genetic control of resistance to Ceratocystis wilt in Mangifera indica

Arriel, Daniele Aparecida Alvarenga 29 October 2015 (has links)
Submitted by Reginaldo Soares de Freitas (reginaldo.freitas@ufv.br) on 2016-04-22T14:47:34Z No. of bitstreams: 1 texto completo.pdf: 596060 bytes, checksum: 195f188842585dea52237c6d939b0231 (MD5) / Made available in DSpace on 2016-04-22T14:47:34Z (GMT). No. of bitstreams: 1 texto completo.pdf: 596060 bytes, checksum: 195f188842585dea52237c6d939b0231 (MD5) Previous issue date: 2015-10-29 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / A manga (Mangifera indica L.) é uma das frutas tropicais mais consumidas no mundo e a murcha-de-Ceratocystis causada por Ceratocystis fimbriata Ellis & Halsted é um dos fatores limitantes para sua produção. Embora esforços têm sido empregados na seleção e identificação de materiais resistentes à doença, a base genética da resistência à murcha-de-Ceratocystis em mangueira, informação essencial para direcionar programas de melhoramento que visem desenvolver cultivares resistentes, não é conhecida. Nos estudos sobre o controle genético da resistência, devem-se usar preferencialmente famílias segregantes oriundas de cruzamentos controlados. No entanto, em mangueira, o pequeno tamanho das flores associado à alta abscisão dos frutos torna os cruzamentos manuais muito trabalhosos e com baixo rendimento. Assim, tem-se adotado o uso de polinização aberta a qual pode apresentar indivíduos contaminantes ou oriundos de autofecundação. Portanto, o presente estudo teve como objetivos: 1) confirmar por meio de marcadores microssatélites a origem híbrida de seis progênies obtidas via cruzamentos naturais; 2) estudar o controle genético da resistência à murcha-de-Ceratocystis em mangueira. Na primeira parte, plantas isoladas das cultivares Coquinho, Espada, Haden, Keitt, Palmer e Van Dyke foram identificadas dentro de pomares comerciais estabelecidos com a cultivar Tommy Atkins. Frutos de cada uma destas seis cultivares foram colhidos para a produção das mudas que posteriormente foram levadas para o campo. Folhas das progênies e dos genitores foram coletadas, o DNA foi extraído e a caracterização dos híbridos foi feita utilizando seis marcadores microssatélites. A percentagem de híbridos confirmados nos cruzamentos (33 a 89 %) foi maior que a relatada na literatura usando polinização manual e a estratégia adotada mostrou-se eficiente na obtenção e caracterização dos híbridos. Na segunda parte do estudo, avaliou-se a resistência à murcha-de- Ceratocystis nas cultivares Coquinho, Espada, Haden, Keitt, Palmer, Van Dyke e Tommy Atkins e estudou-se o controle genético da resistência à doença em 197 plantas derivadas de cruzamentos de cada uma dessas cultivares com a “Tommy Atkins”. As cultivares Keitt, Palmer, Tommy Atkins e Van Dyke foram mais resistentes e as cultivares Coquinho, Espada e Haden mais suscetíveis à doença. Os resultados deste estudo mostram que a herança da resistência à murcha-de-Ceratocystis em mangueira é poligênica com uma prevalência de genes com efeitos de dominância e epistasia. O ganho genético obtido com a seleção das 10 melhores plantas, ou seja, as mais resistentes, foi de 46%, o que significa uma redução de 46% na severidade da doença. Em geral, observou-se baixa frequência de alelos favoráveis à resistência a doença na população estudada o que indica a necessidade de introdução de novos materiais genéticos. / The mango (Mangifera indica L.) is one of the most consumed tropical fruit in the world and Ceratocystis wilt caused by Ceratocystis fimbriata Ellis & Halsted is a limiting factor for its production. Although efforts have been employed in the selection and identification of materials resistant to Ceratocystis wilt, the genetic basis of resistance to the disease in mango is unknown. This information is essential to guide breeding programs aiming the development of resistant cultivars. In studies on the genetic control of resistance, segregating families, derived from controlled crossings, should be used, preferably. However, the small size of mango flowers associated with a high fruit abscission make artificial crossings laborious and with low yield. Therefore, this study aimed to: 1) to confirm by microsatellite markers the hybrid origin of six progenies obtained via natural crossings; 2) study the genetic control of resistance to Ceratocystis wilt in mango. In the first part of this work, isolated plants of cultivars Coquinho, Espada, Haden, Keitt, Palmer and Van Dyke were identified in commercial orchards established with the cultivar Tommy Atkins. Open pollinated progenies from each cultivar were planted in the field. Leaves from these progenies and parents were collected, DNA was extracted and the characterization of the hybrids was done using six microsatellite markers. The percentage of confirmed hybrids for the crossings (33-89%) was higher than expected by manual pollination, which indicates that the adopted strategy is efficient in obtaining and characterization of the hybrids. In the second part of the work, we evaluated the resistance to Ceratocystis wilt in the cultivars Coquinho, Espada, Haden, Keitt, Palmer, Van Dyke and Tommy Atkins. Subsequently, we studied the genetic control of resistance to the pathogen on 197 plants derived from crossings between the remaining cultivars and “Tommy Atkins”. The cultivars Keitt, Palmer, Tommy Atkins and Van Dyke were more resistant and the cultivars Coquinho, Espada and Haden were more susceptible. The results of this study show that the inheritance of resistance in mango is polygenic with a prevalence of genes with effects of dominance and epistasis. The genetic gain by selecting the ten more resistant plants was 46%, which means a 46% reduction in disease severity. In general, there was a low frequency of favorable alleles for resistance to the disease in the population studied indicating the need to introduce new sources of genetic materials.
44

Distribuição do sistema radicular de cultivares de mangueiras (Mangifera indica L.) em latossol / Root system distribution of mango varieties (Mangifera indica L.) in latosol soil

Armadans Rojas, Andres Jose 01 February 1990 (has links)
O presente experimento foi realizado no Pomar do Departamento de Horticultura da ESALQ/USP, Piracicaba (SP), em 1989, tendo como objetivo verificar a distribuição do sistema radicular das mangueiras "Oliveira Neto" e "Imperial" enxertadas sobre os porta-enxertos "Espada" e "Coco", com 23 anos de idade. Para avaliação do sistema radicular, através da quantidade de radicelas, em amostras de terra obtida com "TRADO" conforme utilizado por FORD (1952), com pequenas modificações feitas por MONTENEGRO (1960). Foram utilizadas 16 plantas, 4 de cada combinação. As amostras (10 por plantas, 5 de cada lado) foram retiradas a distâncias de 100, 200, 300, 400 e 500 cm do tronco. Em cada um desses pontos as amostras, de forma cilíndrica, com 30 cm de altura e 16 cm de diâmetro, foram tomadas até a profundidade de 120 cm. Na superfície as duas primeiras amostras representam 0 a 15 cm e 15 a 30 cm de profundidade. Com base nos resultados obtidos, nas condições do experimento pode-se concluir que: A maior concentração das radicelas nas camadas mais superficiais. Não se observou influência do cultivar enxerto sobre o sistema radicular. Foi constatada a influência do porta-enxerto, nos primeiros 60 cm de profundidade, onde o cultivar Espada apresentou maior quantidade de radicelas. Nas camadas inferiores, não houve diferenças entre os porta-enxertos. Nos primeiros 15 cm de profundidade, houve diferença significativa entre os porta-enxertos também nessa camada, o cultivar Espada apresentou maior quantidade de radicelas. Na distribuição horizontal, a maior concentração das radicelas encontram-se a 100 e 200 cm de distância do tronco, com 35,27% e 25,89% respectivamente / The experiment was carried out in a orchard of Horticultural Department of Escola Superior de Agricultura 'Luiz de Queiroz'-USP, Piracicaba, State of São Paulo, Brazil in 1989, with the objective of verify the root system distributon of mango trees of variety 'Oliveira Neto' and 'Imperial' grafted on a root stock of 'Espada' and 'Coco', 23 years old. For the valuation of root system, through the amount of radicels, it was used the 'Auger' method. This method was uscel by FORD (1952), modified, by MONTENEGRO (1960). It was studied 16 plants, 4 of each combination (scion/root stock). The soil samples with roots (10 points, 5 each side) were taken from point at distances of 100, 200, 300, 400 and 500 cm for from the trunk. The samples, had cylindrical form, 30 cm height and 16 cm of diameter. They were taken from the surfice untill 120 cm depth. The first sample was taken from 0 to 15 cm and the second from 15 to 30 cm depth, the rest was 30 cm height. The conclusions in these experimental conditions are: There is a higher concentration of radicels in the superficial layers. It was not observed influence of the scion on the root system. I was found out the influence of the root stock, in the layers from 0 to 60 cm of depth. Where the variety Espada showed higher amount of radicels. There were no diferences among the root stock in the deeper layer. The were significative diferences among the root stock in the layer from 0 to 15 cm depth; for variety 'Espada' that|showed higher amount of radicels. Concerning the horizontal distribution, the highest concentration of radicels were at 100 and 200 cm of distance of the stem, with 35,27% and 25,89% respectively
45

Desert Rose - Hidden Truth : Ett projekt om hur man arbetar från ett bildmanus till en färdig produkt.

Mikucka, Monika January 2009 (has links)
Detta är ett examensarbete om hur man går tillväga för att skapa ett flertal animationssekvenser baserade på bildmanus och andra viktiga faser under animationsprocessens gång, som t.ex modellering. Hela examensarbetet är baserat på ett pågående serieprojekt, Desert Rose. Projektet behandlar visualisering och gestaltning av karaktärer samt överföring mellan 2D till 3D-miljö. Examensarbetet är en konceptuell animation där påhittat gränssnitt (hälsomätare, ammunition etc.), engelsk dialog, filmsekvenser och konceptuell spelbarhet förekommer. Resultatet blev en blandning mellan ett konceptuellt spel och en animationsfilm, med animatics inslag. Bildmanuset förblev en mycket viktig faktor under processen. Trots att viktiga moment såsom spelbarheten delvis försvann kompenserades detta genom förtydligande av kläder, miljö och bruket av närbilder.
46

Tre bibliotekariers uppfattningar om serier

Carlsson, Sandra, Dungert, Anna-Sara January 2011 (has links)
This bachelor´s thesis wants to look closer at librarians´ experiences of comics, manga and graphic novels. In order to bring these experiences forward qualitative interviews and the method of phenomenography was used. The material was then examend againstna theory of previous research, revealing that the problems librarians in Sweden face with these media are largely the same as the problems faced by librarians in other parts of the world. It also became clear that the participating librarians held a positive attitude to the presence of comics, manga and graphic novles in their libraries.
47

Japansk 2D grafisk animation : uppkomst och influenser

Jurvanen, Christin January 2012 (has links)
In 1896, a French cinema pioneer named George Méliès demonstrated that an object could be set to motion by changing the objects shape or movement frame by frame. But it was not until the early 1900s that this specific genre of filmmaking became a great success. The animations were essentially short and were animated and published in The United States of America. The interest in animated movies began to increase, not only in the west, but also in Europe and Asia. The art of animation grew especially popular in Japan, and emerged as a parallel to Japanese comic books known more commonly as Manga.The history of Japanese animation is not as commonly known as the history of American animation. Most people know of Disney and how Walt Disney changed the world of animation. Most people also know that Disney was the first company to release an animated feature film in color- Snow White (1937). But there are not many people outside of the Asian countries that know the history of Japanese animation- How Japanese animation started out and later evolved and affected the Western form of animation.The aim of this thesis is to provide the reader with insight into the history of Japanese animation. To give the reader knowledge of where Japanese animation originated and why, and also to bring forth the factors that affected Japanese animators in the development of animated movies in the early 1900s and forward.A study of previous material on this subject was done in order to answer these questions. Both printed material and electronically downloaded material was collected and amazed in order to obtain information to specific background materials and information about the history of animation in Japan.It was concluded that in order to get an insight in the Japanese animation history, it was necessary to analyze the Japanese art traditions of Ukiyo-e, which according to many scientist, are the original roots of the Japanese art of anime and manga.Through the analysis it also becomes clear that manga and anime is not simply a copy if it’s western counterparts, but a combination of both Japanese and western styles. In this way the Japanese tradition of manga and anime have survived but undergone a form of renewal through the years.
48

Desert Rose - Hidden Truth : Ett projekt om hur man arbetar från ett bildmanus till en färdig produkt.

Mikucka, Monika January 2009 (has links)
<p>Detta är ett examensarbete om hur man går tillväga för att skapa ett flertal animationssekvenser baserade på bildmanus och andra viktiga faser under animationsprocessens gång, som t.ex modellering. Hela examensarbetet är baserat på ett pågående serieprojekt, Desert Rose. Projektet behandlar visualisering och gestaltning av karaktärer samt överföring mellan 2D till 3D-miljö. Examensarbetet är en konceptuell animation där påhittat gränssnitt (hälsomätare, ammunition etc.), engelsk dialog, filmsekvenser och konceptuell spelbarhet förekommer.</p><p>Resultatet blev en blandning mellan ett konceptuellt spel och en animationsfilm, med animatics inslag. Bildmanuset förblev en mycket viktig faktor under processen. Trots att viktiga moment såsom spelbarheten delvis försvann kompenserades detta genom förtydligande av kläder, miljö och bruket av närbilder.</p>
49

Sleep of reason? : the practices of reading shônen manga

Gallacher, Lesley-Anne January 2011 (has links)
In this thesis, I explore the practices of English-speaking readers of shônen manga (Japanese comics written primarily for an audience of teenage boys). I concentrate on three series in particular: Hiromu Arakawa’s Fullmetal Alchemist (2001–2010), Tite Kubo’s Bleach (2001–ongoing), and Masashi Kishimoto’s Naruto (1999–ongoing). I argue that, although it may appear to be inherently imbued with (authorial) meaning, the shônen manga text emerges from a curious ‘alchemy’ through which the practices of readers transform the ‘raw’ materials provided by manga creators to produce a text that appears to have always been inherently meaningful in itself. I argue that this is always an impossible and monstrous transformation. In the first chapter, I introduce the monstrous combinations of words and pictures, panels and gutters known as shônen manga and argue for the importance of taking the practices of ‘ordinary’ (or, at least, non-scholarly) reading seriously. In the second chapter I explore the idea that reading is an ‘alchemy’ through which the disparate elements readers encounter on the page are transformed into a meaningful text. In the third chapter, I discuss the ways in which time and narrative are braided as readers assemble the disparate elements they encounter on the shônen manga page. In Chapter 4, I explore the visceral thrills of reading shônen manga, which are often expressed through notions of the awesome and the epic. Finally, in Chapter 5, I examine the ways in which a group of shônen manga readers known as ‘shippers’ find love and romance amidst the fighting in shônen manga and demonstrate the legitimacy of these readings by locating them in the material text through the concept of ‘canon’. By attending to reading as an embodied and material practice in this way, the thesis contributes to debates about the relationships between creators, texts and audiences and ongoing attempts to imagine new ways of being critical within cultural and literary studies. Within cultural geography, these kinds of attempts have often been aligned with what might broadly be described as nonrepresentational theories. As such, this thesis attempts to draw out the geographies through which manga texts are realised as manga texts at all.
50

Bibliotekssveriges attityder till tecknade serier : En textanalys av artiklar från Biblioteksbladet 2005-2010 / The Swedish library community's attitude towards comic books : A textual analysis of articles from Biblioteksbladet 2005-2010

Levén, Caroline January 2016 (has links)
No description available.

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