Dissertations / Theses on the topic 'Suro'
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Prat, i. Botanch Chantal. "Incidència de microorganismes i de compostos orgànics volàtils en l'aparició de defectes sensorials en suro." Doctoral thesis, Universitat de Girona, 2010. http://hdl.handle.net/10803/7878.
Full textThe incidence of musty-earthy sensory deviations on cork is one of the main problems that the cork industry faces. The main compounds related to this defect are chloroanisoles, methoxypyrazines, geosmin and methylisoborneol. The aim of this research work was to develop analytical methods to simultaneously determine a large set of volatile compounds in cork samples. A methodology based on solid phase microextraction (SPME) and gas chromatography for the determination of TCA, 3-isopropyl-2-methoxypyrazine, geosmin and methylisoborneol in cork aqueous macerates has been developed and validated. Moreover, the microbial origin of most of these compounds makes necessary to complement the chemical analysis with the detection and isolation of microorganisms that may be involved in the production of off-odours. Regular fingerprinting techniques for the analysis of microbial diversity such as Denaturing Gradient Gel Electrophoresis (DGGE) have been applied to the study of microorganism potentially responsible for off-odour formation in cork, in order to complement the chemical characterization of the volatile fraction. Finally we have evaluated the off-odour production capacity of microorganisms isolated from cork using olfactometry techniques.
Insa, Aguilar Sara. "Detecció de compostos volàtils, clorofenols, cloroanisoles i 2,4,6-tribromoanisole, relacionats amb el "gust del suro"." Doctoral thesis, Universitat de Girona, 2006. http://hdl.handle.net/10803/8040.
Full textEn segon lloc, per tal de dur a terme l'anàlisi de cloroanisoles juntament amb els seus precursors en matrius de suro s'ha avaluat un mètode basat en l'extracció amb dissolvent orgànic, el qual ha estat aplicat per a l'estudi de diferents sistemes d'eliminació d'aquests anàlits en la matriu citada.
En darrer lloc, s'han proposat metodologies per l'anàlisi de mostres de vi, en les quals d'una banda s'han determinat els compostos clorofenòlics utilitzant la SPME i de l'altra el 2,4,6-tricloroanisole i el 2,4,6-tribromoanisole mitjançant l'acoblament de la SPE i la injecció de grans volums (LVI) en el sistema cromatogràfic.
The organoleptic defect known as cork taint is associated with a musty or mouldy aroma in wine. Chloroanisoles, which are produced through a process of detoxification by fungal methylation of chlorophenolic compounds, are considered to be the main contributory substances. In the present work, analytical methods for the determination of chlorophenols (2,4,6-trichlorophenol, 2,3,4,6-tetrachloropheol and pentachlorophenol) in cork matrices using the solid-phase extraction (SPE) and the solid-phase microextraction (SPME) as preconcentration techniques were evaluated. Therefore, hydroalcoholic solutions have been proposed as extractant solvent in order to test the quality of cork stoppers.
Furthermore, a methodology based on extraction with an organic solvent for the simultaneous determination of chloroanisoles and chlorophenols in cork matrices was proposed. This methodology was applied with the aim of checking the efficiency of several washing treatments to remove the target analytes in naturally contaminated cork samples.
Finally, different procedures have been developed for the analysis of wine samples. On one hand, chlorophenols were quantified by employing a SPME method. On the other hand, a reliable SPE method coupled to large volume injection was proposed for the determination of both 2,4,6-trichloroanisole and 2,4,6-tribromoanisole.
Testi, Silvia <1967>. "Caratteristiche merceologiche, nutrizionali, sensoriali e di freschezza di Nasello (Merluccius merluccius), Lanzardo (Scomber japonicus) e Suro (Trachurus trachurus)." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/1060/.
Full textJové, Martín Patricia. "Caracterització del suro i subproductes de la indústria surera. Valoració d'aquests com a biosorbents d'hidrocarburs aromàtics policíclics en aigües d'escorrentia." Doctoral thesis, Universitat de Girona, 2016. http://hdl.handle.net/10803/403467.
Full textL'objectiu general d'aquesta tesi ha estat caracteritzar i avaluar la capacitat del suro i subproductes (en conjunt anomenats mostres de suro) de la indústria surera com a biosorbents d'hidrocarburs aromàtics policíclics (HAPs) presents en l'aigua d'escorrentia. Per tal d’assolir aquest objectiu s’han dut a terme una sèrie d’estudis que es detallen a continuació. Un dels usos que s’ha contemplat per a la reutilització de l’aigua d’escorrentia tractada és la seva aplicació en la bullida de les planxes de suro donat que això, no només implicaria millores en la gestió dels recursos hídrics, sinó que també donaria valor afegit a un subproducte del sector surer aplicant-lo en el propi sector. També s'ha avaluat la possibilitat de regenerar el biosorbent contaminat eliminant els HAPs que ha adsorbit anteriorment, a partir de la biodegradació. En aquest cas, el suro contaminat amb antracè o HAP escollit com a compost representatiu, s'ha inoculat amb tres fongs ligninolítics (amb activitat degradadora contrastada) i tres fongs no ligninolítics característics del suro. Després, s'han identificat els productes intermedis generats durant la descontaminació, i s'ha proposat el mecanisme de degradació de l'antracè pel fong que ha presentat major capacitat de degradació. Aquesta darrera etapa és molt important ja que tanca el cicle de l'ús del suro com a biosorbent d'HAPs
Delgado, Perez Jhames Franks, and Linares Abel Hipolito Cruz. "Diseño definitivo de la carretera puente El Suro-La Flor, del distrito de San Andrés de Cutervo, Cutervo, Cajamarca." Bachelor's thesis, Universidad Católica Santo Toribio de Mogrovejo, 2019. http://hdl.handle.net/20.500.12423/2493.
Full textTesis
Guibert, Stéphane. "L'univers du surf et stratégies politiques en Aquitaine /." Paris ; Budapest ; Kinshasa [etc.] : l'Harmattan, 2006. http://catalogue.bnf.fr/ark:/12148/cb40952279c.
Full textBibliogr. p. 311-321. Webliogr. p. 321.
Faessel, Ludovic. "Résistance induite par l’acibenzolar-Sméthyl sur soja et conséquences sur la rhizosphère." Mulhouse, 2007. https://www.learning-center.uha.fr/opac/resource/resistance-induite-par-lacibenzolarsmethyl-sur-soja-et-consequences-sur-la-rhizosphere/BUS4032060.
Full textResearch in crop protection is actually focused on the development of new tools for controlling plant diseases, alternative or complementary to traditional fongicides. Induction of resistance by using plants own defence mechanisms is emerging as a promising strategy for controlling plant diseases. The aim of this study was to test seed treatment with acibenzolar-S-methyl (ASM) on soybean for its ability to induce an effective induced resistance to hypocotyl rot and to investigate the effect of this treatment on two symbioses of soybean: Bradyrhizobium japonicum-soybean and Glomus mosseae-soybean. Our results showthat seed treatment with ASM decreases significantly the severity of the hypocotyl rot caused by Rhizoctonia solani AG-4. This protective effect of ASM against R. Solani AG-4 is probably due to combination of induced resistance and its effect on growth of the pathogen. However, this strategy can also cause side-effects, by modifying root morphology or by the inhibition of soybean symbioses establishment
Mallek, Maryam. "Analytical methodology based on a silicone rod (SR) micro extraction combined with HPLC-DAD method for the determination of pharmaceuticals and antibacterial products in effluent wastewaters: characterization of the sorption removal processes by cork." Doctoral thesis, Universitat de Girona, 2018. http://hdl.handle.net/10803/669295.
Full textLes tècniques de microextracció en fase sòlida (SPME) permeten obtentir alts factors d'enriquiment emprant petits volums de solvents fent possible que s'assoleixin els baixos límits de detecció requerits per la determinació de ketoprofen, naproxen, carbamazepina, diclofenac i triclosan en matrius d'interès ambiental emprant HPLC-DAD. S'ha revisat l'estat de l'art de les diferents tècniques de SPME i les seves darreres innovacions. S'ha desenvolupat i validat un mètode analític basat en la microextracció amb vareta polidimetilsiloxà (PDMS) i HPLC-DAD per la determinació de PPCPs, estudiant-ne els diferents paràmetres i condicions que afecten a les etapes d'extracció (pH, modificador orgànic, força iònica, cinètica i volum de mostra) i de desorció (dissolvent, volum, temps de desorció i aplicació de sonicació). S'ha demostrat que el suro granulat pot ser una alternativa de baix cost per l'eliminació de PPCPs i compostos fenòlics de les aigües atès que la seva capacitat per adsorbir aquests contaminants és alta
Sejri, Nejib. "Influence du pré-mouillage sur la production et sur les caractéristiques mécaniques d'un fil encollé." Mulhouse, 2008. https://www.learning-center.uha.fr/opac/resource/influence-du-premouillage-sur-la-production-et-sur-les-caracteristiques-mecaniques-dun-fil-encolle/BUS4111202.
Full textTo size a yarn before the weaving operations it is possible to pad this yarn in warm water before the padding in the size solution. This operation decreases the size rate of the yarn but despite this decrease the young modulus of the yarn is better than without prewetting. This result is explained by a better spreading of the size points due to a better wetting of the yarn by the size solution. This prewetting decreases also the yarn hairiness and its behaviour in fatigue tests
Bisson, Antoine. "Le pouvoir fédéral face au contexte praxique : le cas du surf et des pratiquants libres : de la gouvernabilité d'un système aporétique." Rouen, 2011. http://www.theses.fr/2011ROUEL031.
Full textThe analysis of the free practice of surfing enables to show a set of outlines composed of several factors and dynamics among which the phenomenon of concurrence turned out to be essential. As a position of organizing the terms of practice of this sport, it generates a system of sharing of the abilities to act for all of those who practice surfing. This quest for practice, that is to say this desire to « practice surfing », associated with the desire to « be a surfer », is in the middle of the relation which ties or unties those who practice surfing and the federation. Our thinking shows that the disagreement is not determined by a desire for freedom or a search of independence but it is determined by the structure of the activity organized around independent and contingent « norms of functionality » rising from a « culture of adaptation ». In this context, the « contestation », especially regulatory, is not a state of mind prior to the activity but the behavior subsequent to the practice in context. This disagreement is linked to an aporetic system which outlines an unsolvable problem between the indifferentiating federal measure of the idea integrating all the surfers and the logic differentiating the surfers directly linked to the excluded structure of the pratice
Guibert, Christophe. "Identifications territoriales et usages politiques du surf sur la côte aquitaine : des villes de surf sans surfeurs ?" Nantes, 2005. http://www.theses.fr/2005NANT3022.
Full textRegional hegemony on the institutional plan and the results resulting from a quantitative survey carried out near the mayors of the communes of the littoral let believe that surfing in Aquitaine is systematically present in identification territorial dynamic. However, the surfing universe isn't considered same manner by the municipalities. The communal properties, the local characteristics of surfing and the political work of the local councillors are articulated to give original political actions. The malleability of the surfing representations and the surfers is used according to the local political interests. More than in favour of the practise, it's side of the economic, media, tourist and social repercussions that one can seize the actions of the local councillors. The surfing universe is reduced almost, for the municipalities, with a political resource suitable to feed from the interests who spontaneously don't encourage the growth and the rationalization of the practice
Sayeux, Anne-Sophie. "Surfeurs, l'être au monde : une analyse socio-anthropologique /." Rennes : PUR, 2008. http://catalogue.bnf.fr/ark:/12148/cb411826895.
Full textDehandschoewercker, Eline. "Physique du surf, ou sur l'entraînement de particules par des ondes." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066690/document.
Full textSurfing is a sport in which the athlet must execute figures while standing in balance on a board, carried itself by a water wave. In this PhD study, we investigate the physical phenomena underlying such a transport of a particle by a wave. We specifically focused our attention on two crucial issues when surfing: the catch of the surfer by the wave and its stability on the board. We first establised under which conditions the surfer is carried by the wave in a quantitative manner, for different kinds of waves. We showed that the slope of the wave and the stream within played a significant role for the wave to be able to catch the surfer when breaking. The surfing condition that we found relates the initial relative velocity between the surfer and the incoming wave, which essentially depends on its slope. We then demonstrated that choosing the right board improves the stability of the surfer. This stability condition sets a maximum height of the center of gravity of the surfer from the board, as a function of the board dimensions. We hence highlighted how they influence the minimal surfer velocity above which the surfer balance becomes more stable. The initial velocity of the surfer after paddling is essential to ensure the surfer to catch the wave and improve his stability. We finally study the phenomenon in two other fields of physics: in mechanics and magnetism. The different experiments as well as their common theoretical modeling led to a global and fundamental understanding of the phenomenon
Barjolin, Anne. "Ethno-esthétique du surf en Floride : impact des relations esthétiques entre surf et musique sur le marquage identitaire." Thesis, Montpellier 3, 2018. http://www.theses.fr/2018MON30017/document.
Full textThis thesis in American studies focuses on the implementation of the surf lifestyle through a surf music anchored in a geographic and sociocultural space overlooked by surf specialists even though it is prone to cultural creativity and to the development of singular and inclusive aesthetics at once. Cultural practices of surfers from Florida’s Space Coast are analyzed in this ethnographic study that conceptualizes ethno-aesthetics and draws from ethnomusicology and social psychology theories. This interdisciplinary work explores the ways in which musical experience pertaining to the surf lifestyle can be considered as a marker of the various American surf subcultures. From the physical space in which music comes to life to a mythology built around ideological scenes, the place in which music is developed and consumed plays a vital role on its evolution and its conservation. We move past the myth of a surf music marked by Californian exclusive aesthetics in order to suggest the glocalization of a redefined surf music used as a space allowing the marking of local identities. Theoretical models related to the cultural systems under scrutiny as well as concepts such as surf strands, the principle of relative inclusiveness, or the surfanization of urban spaces are developed according to the needs of the research
Fernandes, Ivan da Rocha. "O que considerar na construção de uma plataforma web de pesquisa de spots de surf?" Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22541.
Full textOs surfistas são caracterizados pelo tempo e esforço que dedicam à modalidade e pela grande propensão que têm para viajar em busca da onda perfeita (Barbieri & Sotomayor, 2013). Nessa busca constante, os surfistas viajam milhares de quilómetros em direção a outros continentes pelo que encontram situações climatéricas e culturais diferentes das que estão habituados. Por estas razões a escolha do destino é feita de forma criteriosa. O surfista tem em conta o surfing appeal do local, a variedade de ondas, a natureza e o ambiente (Barbieri & Sotomayor, 2013). Desta forma a recolha de informação antes da viagem, denominada de surf-trip, é indispensável. Contudo, essa informação encontra-se dispersa o que leva a que seja recolhida de formas diferentes. Assim, o processo de recolha torna-se moroso e dificulta a escolha final. Neste contexto, o objetivo desta investigação é criar um protótipo de uma plataforma web que agregue toda a informação sobre os locais onde se pode surfar, num só local, onde é possível encontrar e descobrir novos lugares. Pretende-se desenvolver um mecanismo de pesquisa avançada que facilite esta tarefa. Esta solução foi submetida a testes, ao nível da usabilidade e experiência de utilização, com a finalidade de entender a viabilidade do projeto.
Surfers are usually known by the time and effort they put on the sport and the desire to find the perfect wave (Barbieri & Sotomayor, 2013). In that journey, surfers travel between continents and face climacteric and cultural challenges. And for that reasons they choose the destination carefully. Surfers take in account the surfing appeal, the wave variety, the ambience and the natural environment of a destination (Barbieri & Sotomayor, 2013). In that way getting all the information about the location, previously, is indispensable. However, the data is often spread away and it is difficult to put it all together. As result finding the perfect destination may become an exhaustive task. In conclusion, this investigation main goal, is to prototype a web platform that aggregate all the information. Where surfers can search and find new destinations. It is intended to develop an advanced search engine that make this task easier. This solution will be tested for usability and user experience in order to understand the feasibility of the project.
Cheynet, de Beaupré Claire. "Surf : pathologie et traumatologie." Lyon 1, 1991. http://www.theses.fr/1991LYO1M118.
Full textMoura, Ana Catarina Gomes. "O valor económico do turismo de surf na Ericeira." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/23095.
Full textAtualmente, o surf representa um motor económico global, valendo biliões de euros, por ano. Mais do que um desporto, o surf é um estilo de vida. Portugal, um país intrinsecamente ligado ao mar, tem um número cada vez maior de fãs e praticantes deste desporto, proporcionando ao longo dos anos mais e melhores condições para os nativos e estrangeiros, aproveitá-lo ao máximo. Esse é o caso da Ericeira - uma pequena vila de pescadores situada a 35 km de Lisboa -, galardoada como Reserva Mundial do Surf, em 2011, registrando uma procura turística nunca antes vista. Esta investigação tem como objetivo principal fornecer alguns inputs sobre o valor económico direto do turismo de surf, para a vila da Ericeira. Para isso, procura-se determinar os padrões de despesas dos turistas praticantes de surf, durante a sua estadia numa das mecas de surf de Portugal. Este trabalho, para além da vertente económica visa também compreender o perfil do praticante de surf que visita esta localidade, mais precisamente, as suas características sociodemográficas motivações, benefícios obtidos, comportamento de viagem e avaliação do destino. A fim de atingir o objetivo desta investigação foi adotada uma metodologia quantitativa, recorrendo-se à utilização do inquérito por questionário, aplicado aos praticantes de surf que se deslocaram, em 2017, à Ericeira, para a prática do surf. Através dos dados obtidos, concluiu-se que os inquiridos têm, em média, 28 anos, maioritariamente solteiros, mais de um terço apresenta formação superior e a maioria tem um rendimento mensal entre os 600 e os 1200 euros. Relativamente às despesas efetuadas na Ericeira, verifica-se que, em média, gastaram um total de 645, 31 € por pessoa, essencialmente no alojamento (237,38 €), na alimentação e bebidas (188,04€) e nos transportes/deslocações (104,33€). No que concerne às despesas totais por pessoa por noite, em média, no total, cada surfista gasta aproximadamente 119,54€.
Nowadays, surfing represents a global economic engine, worth billions per year. Moreover, more than a sport, surfing is a lifestyle. Portugal, a country intrinsically linked to the sea, has an increasing number of fans and practitioners of this sport, providing over the years more and better conditions for natives and outsiders to enjoy it at its fullest. That’s the case of Ericeira - a small fishing village situated 35 km from Lisbon -, awarded as World Surfing Reserve in 2011, registering a touristic demand never seen before. Therefore, the main purpose of this research is to provide some inputs over the direct economic impact of surf tourism in Ericeira. For this, it is sought to determine the spending patterns of surfing tourists during their stay in one of the surf meccas of Portugal. In addition to the economic aspect, this research also aims to understand the surfers’ profile, in terms of their socio-demographic characteristics, motivations, benefits obtained, travel behavior and destination evaluation. In order to achieve this goal, this research adopted a quantitative methodology; using a questionnaire survey, aiming surfers who travelled to Ericeira in 2017. After analyzing the data provided by the surveys, it is possible to conclude that the respondents have, on average, 28 years, are mostly single and more than a third of them possess a higher education - with an estimated monthly income of 600 to 1200 euros. Regarding the expenses incurred in Ericeira during their stay, it was verified that, on average, a total of 645, 31€ was spent per person, mainly for "accommodation" (237.38 €), "food and beverages" (188.04 €) and "transport / travel" (€ 104.33). Concerning total expenses per person (per night), on average, each respondent spent approximately € 119.54.
Correa, Neto Randolpho da Silva. "Processamento de suco de laranja pasteurizado em garrafas de polietileno tereftalato (pet)." [s.n.], 1998. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254550.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
Made available in DSpace on 2018-07-24T02:44:17Z (GMT). No. of bitstreams: 1 CorreaNeto_RandolphodaSilva_M.pdf: 40960452 bytes, checksum: 074417d90d6778ec4b4d84ffbf4777da (MD5) Previous issue date: 1998
Resumo: O trabalho teve por objetivo desenvolver um processo de obtenção de suco de laranja pasteurizado acondicionado em garrafa de polietileno tereftalato (PET) e avaliação de sua vida-de-prateleira sob refrigeração a 4°C. Dois lotes de suco de laranja (Citrus sinensis) foram pasteurizados, um a 72°C/16s e outro a 91°C/40s e avaliados quanto à densidade relativa a 20°C, sólidos solúveis, acidez total titulável, pH, sólidos em suspensão, ácido ascórbico, atividade da enzima pectinesterase, cor, contagens microbiológicas de bolores e leveduras, bactérias láticas, coliformes totais e fecais e quanto à qualidade geral e sabor. As embalagens de PET foram caracterizadas quanto ao peso, capacidade volumétrica, dimensões, distribuição de espessura, integridade do fechamento, resistência à carga vertical, permeabilidade ao oxigênio, ao vapor de água e colapsagem. Os tratamentos térmicos foram eficientes na redução da contagem microbiana inicial e na inativação da pectinesterase. Não houve alteração nas características químicas e físicas dos sucos de laranja, exceção para o teor de sólidos em suspensão que diminuiu com os tratamentos térmicos. Nas avaliações hedônicas, geral e sabor, houve uma tendência a preferência pelo produto submetido ao processo mais brando (72°C/16s). A vida-de-prateleira do suco de laranja, para cada tratamento, foi determinada com base nas alterações microbiológicas, tendo sido 17 dias para. o suco pasteurizado a 72°C/16s e 19 dias para o suco tratado a 91°C/40s. A densidade relativa a 20°C, sólidos solúveis, acidez total titulável, ra tio , pH e atividade de pectinesterase não apresentaram variação significativa (p
Mestrado
Mestre em Tecnologia de Alimentos
SCHUINA, G. L. "Utilização de ultrassom na conservação de suco de laranja: efeito sobre características fisíco-químicas, enzimáticas, microbiológicas e sensoriais." Universidade Federal do Espírito Santo, 2014. http://repositorio.ufes.br/handle/10/4917.
Full textO consumo de suco de frutas vem aumentando no Brasil. Entre 2002 e 2009 o consumo de sucos, sejam eles concentrados, em pó, sucos ou néctares, aumentou em 21%. Devido ao seu sabor agradável e doce, e ao seu valor nutricional, o suco de laranja é o suco mais comum fabricado pela indústria de processamento de bebidas. Diversos fatores podem afetar a qualidade do suco de laranja. A microbiota típica presente no suco de laranja pode ser proveniente de várias etapas de sua produção. Em relação às enzimas, a pectinametilesterase (PME) é a principal causadora de alterações em suco laranja. A pasteurização e a esterilização comercial são os métodos de conservação mais comuns utilizados para inativar enzimas e micro-organismos, porém podem causar efeitos adversos em relação às características sensoriais (cor, sabor, aroma, e outros) dos produtos. A tecnologia de ultrassom vem sendo estudada recentemente como uma forma de conservar os alimentos sem causar efeitos indesejáveis como os provocados pelos tratamentos térmicos. O objetivo deste trabalho foi avaliar a utilização da tecnologia de ultrassom e de ultrassom aliado a temperaturas brandas, como forma de conservar suco de laranja. Para isto, foram analisadas a contagem de mesófilos totais e bolores e leveduras, a atividade da pectinametilesterase, o teor de vitamina C, a cor, o pH, o teor de sólidos solúveis e a estabilidade em relação à turbidez. Ainda, avaliou-se a aceitação sensorial de suco de laranja submetido à termossonicação. Os resultados foram comparados com os obtidos para o suco natural e o suco pasteurizado. Utilizou-se um ultrassom de 40 kHz, associado às temperaturas de 25 ºC, 30 ºC, 40 ºC, 50 ºC e 60 ºC durante 10 minutos. Os tratamentos utilizando ultrassom a 50 ºC e 60 ºC foram capazes de reduzir a contagem de bolores e leveduras e de mesófilos totais, apresentando uma redução de 3 ciclos logarítmicos. Resultado similar foi encontrado quando realizado o tratamento térmico a 90 ºC por 30 segundos. Observou-se que a aplicação da termossonicação permitiu uma redução significativa na atividade de PME e uma menor perda de vitamina C. O tratamento que apresentou melhor redução na atividade de PME foi utilizando ultrassom 40 kHz com temperatura de 60 ºC. Em relação ao ácido ascórbico, quanto menor a temperatura utilizada em conjunto com a sonicação, menor foi a perda deste composto. O teor de sólidos solúveis, o pH e a cor do suco não foram alterados ao longo do processamento. Avaliando a aceitabilidade do suco, verificou-se que a cor não foi influenciada por nenhum tratamento. Em relação ao aroma, sabor e aceitação global o suco submetido a termossonicação obteve aceitação sensorial superior à encontrada para o suco pasteurizado. Concluiu-se então que a utilização da termossonicação como uma forma de conservação para suco de laranja é viável.
Neyret-Kahn, Hélène. "Etude du rôle de la voie SUMO sur la chromatine et dans l'oncogenèse." Paris 6, 2012. http://www.theses.fr/2012PA066621.
Full textProtein modification by SUMO is involved in numerous fundamental cellular processes. To understand how SUMOylation regulates these processes notably during oncogenesis, we developed three complementary research axes: The first axis was the study of the SUMO E3 ligase PIASy. We characterized its interaction with FAK and showed that PIASy regulates cellular transformation. Moreover, we found that PIASy modulates the transcription of genes involved in cell cycle, motility and inflammation, but also directly the histone genes. The second axis sought to define the un-elucidated role of SUMO on chromatin. Our data indicate that SUMO is widely distributed over the genome and is strongly associated with active promoters. The SUMO machinery binds and represses the histone genes, protein biogenesis genes and tRNA. Cellular senescence is associated with a massive release of the SUMO machinery from chromatin, but selective retention at these loci to maintain a repressive environment likely contributing to the stability of the senescent state. Marking chromatin by SUMO orchestrates concerted transcriptional regulation of a network of genes essential for cell growth and proliferation. Our last axis of research was dedicated to the identification of new enzymatic actors of the SUMO pathway. To this end, we performed a genome-wide screen based on observation of the PML bodies, whose integrity is strictly dependent on SUMO. The first functional studies on two candidates identify a ubiquitination complex for PML that may be regulated by SUMOylation. Together, our results allow to better understand SUMO mechanisms of action in key cellular processes of prime importance for oncogenesis
Desfarges, Laurent. "Etude du gène SUR1 de Saccharomyces cerevisiae: conséquences sur le cytosquelette sous membranaire." Bordeaux 2, 1996. http://www.theses.fr/1996BOR28444.
Full textTwo mutant strains of yeast, rvs161 and rvs167, were previously selected on the basis of reduced viability and abnormal morphology on nutritional starvation, both showed the same pleiectropic phenotype. Physiological suppressors of the rvs161 mutant have been selected. They defined four complementation groups, named SUR1, SUR2, SUR3 and SUR4. All sur mutations are recessive and suppress rvs161 defects as well as these of rvs167 mutant or of the double mutant. The SUR1 gene was studied further. The SUR1 deletion suppress the rvs mutations like the original mutant. Transcription level of SUR1 is low and overexpression does not induce any specific phenotype. Loss of Rvsp lead to abnormal distribution of actin cytoskeleton during the cell cycle. SUR1 deletion suppress this defect. Moreover SUR1 deletion also suppress thermosensibility and salt sensitivity of an act1-1 mutant, suggesting a relationship of Sur1p with actin cytoskeleton. The rvs161 mutant exhibits abnormal glycerophospholipids composition. This defect is not suppressed by sur1-1 mutation, and the global glycerophospholipid content of sur1-1 mutant show a 40 % decrease, while this mutant has a wild type phenotype. Hence, Rvsp and Sur1p are at the interface between membrane, actin cytoskeleton and environmental conditions
Pereira, Paulo Jorge Granado. "Turismo de Surf: estudo exploratório do perfil e motivações dos consumidores da modalidade em escolas de surf no litoral alentejano." Master's thesis, Universidade de Évora, 2019. http://hdl.handle.net/10174/25462.
Full textSantos, Diana Lúcia Silva. "Turismo de Surf na cidade de Peniche: Dimensão turística e estratégias de desenvolvimento. Case Study Rip Curl Pro." Master's thesis, Escola Superior de Hotelaria e Turismo do Estoril, 2013. http://hdl.handle.net/10400.26/4453.
Full textThis dissertation has as main objective to study the surf tourism in the town of Peniche. This recent thematic tourism has been the element leveraged in the development of this city, whose territory is economically depressed, which has changed its image, formerly known as the fishing village is nowadays possessor of ”waves” recognized worldwide – Supertubos, giving rise to a new opportunity for growth and success. The surf is increasingly important economically, socially and culturally. Has undergone major changes over the years, starting as a simple sport has developed at a competitive level and has become a lifestyle, a healthy way to get in touch with nature, thus improving the standard of living of the practitioners. The surf is an important segment to study and understand how you can generate sustained growth, leveraging new opportunities for the economy of the sea, developing a region, as in the case of Peniche. The practical case used as an object of study in this work is the Rip Curl Pro event, which belongs to the World Tour of Surfing held in the town of Peniche, since 2009 and over the years, has contributed greatly to the development of this territory. It is important to analyze the impact that this event has for the tournament and its future repercussions, both socioeconomic and environmental and promotional of the city, contributing to the increased attractiveness of Portugal as a prime destination for surfing. Therefore in the preparation of this paper aims to analyze how the surf tourism product of the region and the benefits to the town of Peniche to host this sport.
Coelho, Alba Lucia Andrade 1960. "Estabilidade de suco de laranja (Citrus sinensis) refrigerado, acondicionado em embalagem asseptica." [s.n.], 2000. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254383.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
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Resumo: Suco de laranja integral, cultivar Pêra Rio, tratado termicamente, refrigerado e acondicionadoassepticamente,em embalagem cartonada tetra-brik foi avaliado em três temperaturas de armazenamento para definição da estabilidade. As amostras foram armazenadas a 2°, 12° e 35°C e analisadas periodicamente pelas determinações de pH, Brix, acidez total titulável, ácido ascórbico e contagem total de mesófilos. Avaliações sensoriais foram realizadas simultaneamente às demais determinações, através de testes de escala estruturada, avaliando a aceitabilidade das amostràs...Observação: O resumo, na integra, podera ser visualizado no texto completo da tese digital
Abstract: Single-strength orange juice, cultivar Pera Rio, heat treated, refrigerated and aseptically packaged in tetra-brik, was studied at three storage temperatures for its shelf-life definition. The samples were stored at 2°, 12° and 35°C and periodically analysed for pH, Brix, total acidity, ascorbic acid and total mesophilic count. Sensory panels were conducted simultaneously, to test the samples acceptability....Note: The complete abstract is available with the full electronic digital thesis or dissertations
Mestrado
Mestre em Tecnologia de Alimentos
Saad, Elhusain Salem. "Defocus Blur-Invariant Scale-Space Feature Extractions." University of Dayton / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1418907974.
Full textCabeleira, Tânia Filipa Ramos. "Turismo de surf na capital da onda: Ensaio sobre a sustentabilidade de uma rota de surf em Peniche." Master's thesis, Escola Superior de Hotelaria e Turismo do Estoril, 2011. http://hdl.handle.net/10400.26/2426.
Full textThe dissertation "Surf Tourism in the Capital of the Wave: essay on the sustainability of a surf route in Peniche" has as main objective to define the surf potential of Peniche, evaluate the conditions for the implementation of a surf route, as well as investigate its contribution to sustainable development and national and international recognition of the region. The management of tourism destinations and products is based on planning strategies, considering the specificity of each destination to conceptualize the priority products. The design of new tourism products can provide new business opportunities thought innovation in tourism. In this sense, the surf is increasingly approached from the perspective of tourism, although studies on the potential benefits for local development are recent, they intensify the need to implement strategic guidelines for the sustainable development of tourist surf destinations. The surf tourism in Peniche is seen as a local tourism strategy, therefore interest study its benefits through research: primary sources (inventories, interviews, questionnaires) and secondary sources (documentary research), in order to understand the structural challenges and opportunities in the development of surf as an emerging tourism product. Evaluating the conditions for the creation of a surf route in Peniche, concluded that there are excellent local resources, including the quality and diversity of waves for surfing, as well as other projects of interest associated with the matter. However, some lack of support infrastructure and identified challenges must be overcome. Thus, the surf route can be a proposal with potential to promote the basic conditions of the surf tourism, as well as provide national and international visibility to Peniche through the structured investment in this product.
Baik, Hayeon. "Role of the SUMO pathway in Acute Myeloid Leukemias response to treatments." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT016/document.
Full textDifferentiation therapies are a promising alternative to genotoxic-based chemotherapies in the treatment of many cancers. In particular, All-trans-retinoic acid (ATRA) is successfully used for Acute Promyelocytic Leukemias, a subtype of Acute Myeloid Leukemias. However, its clinical efficiency is very limited in the other AML subtypes, in particular because of epigenetic repression of ATRA-responsive genes. SUMOs are a family of post-translational modifiers related to ubiquitin and their conjugation, sumoylation, to their substrate proteins regulate many processes including gene transcription. The aim of my thesis was to understand the role of sumoylation in AML responses to treatments. I showed that sumoylation represses ATRA-induced differentiation in many AML cell lines and primary patient samples, including those resistant to chemotherapies. Inhibition of sumoylation with pharmacological inhibitors or overexpression of desumoylases markedly increased their differentiation by ATRA and increasing sumoylation by overexpression of SUMO or its conjugating enzyme Ubc9 strongly reduce ATRA efficiency. Inhibition of sumoylation synergize with ATRA to arrest AML cells proliferation both in vitro and in vivo. Mechanistically, inhibition of sumoylation primes AML cells for differentiation by facilitating the expression of master genes of the myeloid differentiation. Targeting the SUMO pathway thus constitute a promising approach to sensitize AML to differentiation therapies
Diethelm, Anna Margaretha. "Durch sin selbs unerstorben vichlichkeit hin zuo grosser loblichen heilikeit : Körperlichkeit in der Vita Heinrich Seuses /." Bern : P. Lang, 1988. http://catalogue.bnf.fr/ark:/12148/cb355796188.
Full textMori, Emilia Emico Miya. "Suco de melancia [Citrullus lanatus (Tunberg) Matsumara and Nakai] : processamento, formulação, caracterização fisica, quimica, microbiologica e aceitabilidade." [s.n.], 1996. http://repositorio.unicamp.br/jspui/handle/REPOSIP/255208.
Full textTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
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Resumo: Estudou-se a melancia [Citrullus lanatus (Tunberg) Matsumura and akai] quanto aos aspectos físico, químico e tecnológico principalmente para obtenção de suco integral e concentrado e formulação de misturas com os sucos de frutas tropicais. Foram determinadas, na matéria-prima, as composições física e química. Extraiu-se o suco dos frutos da melancia das variedades Crimson Sweet e Jubilee. O suco concentrado, o misto de melancia e maracujá, o integral e o misto de melancia e abacaxi esterilizados foram processados com frutos da variedade Crimson Sweet. O rendimento de extra.ção do suco de melancia variou de 47,9% para a variedade Jubilee e de 48,7 a 54,4 % para a variedade Crimson Sweet em relação ao peso da fruta. Conduziu-se um experimento com misturas, utilizando metodologia de superfície de resposta. para mistura. Um modelo de mistura utilizando equação polinomial canônica de Scheffé foi ajustada para predizer as respostas sensoriais. No experimento de misturas com sucos de melancia, abacaxi e acerola, o modelo polinomial cúbico especial explicou adequadamente os dados experimentais com um coeficiente de determinação ajustado de 86,3 %. Analisando as curvas de contorno da superfície de resposta observou-se que o grau de aceitação correspondente ao "gostei" da escala hedônica foi alcançado com as misturas de 70 % melancia + 30 % abacaxi, 60 % melancia + 40 % abacaxi ou 60 % melancia + 30% abacaxi + 10% acerola. Os produtos processados foram analisados quanto à composição química, atividade enzimática qualitativa, cor instrumental, contaminação microbiológica e testes de aceitabilidade. O suco de melancia integral apresentou teor de umidade ao redor de 91 % e valor de pH de 5,3 o que o caracteriza como um produto de baixa acidez. Os teores de açúcares encontrados no suco constituem cerca de 77 % da matéria seca do suco. Dos açúcares presentes 4,05% correspondem aos açúcares redutores dos quais 2,64% são constituídos de frutose e 1,41 % de glucose. Os teores médios de licopeno, pigmento responsável pela cor vermelha do suco, foram de 3,66mg/l00g no suco integral e 16,71mg/l00g no concentrado. A vitamina C não foi detectada no suco processado. A atividade enzimática da peroxidase e polifenoloxidase continuou mesmo após o tratamento térmico, porém não foi detectada a presença de substrato para as mesmas. O suco misto de melancia e maracujá servido a 86 julgadores não treinados obteve média entre" gostei pouco e gostei" da escala hedônica e resultaram em 86 % de aceitação contra 6 % de indiferença e 8 % de rejeição.Os resultados obtidos~ indicam ser viável o processamento do suco de melancia integral e concentrado e formulação de misturas com os sucos de abacaxi, acerola e maracujá
Abstract: The physical, chemical and technological aspects of the watermelon fruit were studied with respect to whole and concentrated juice processing and experiments with mixtures. The physical and chemical composition of the raw material was determined. Juice was extracted from the Crimson Sweet and Jubilee varieties. The concentrated juice, the mixture of watermelon and passionfruit juices and the UHT processed whole and mixture of watermelon and pineapple juices were all processed with the Crimson Sweet variety. The watermelon juice extraction yield was about 47.9% for the Jubilee variety and varied from 48.7% to 54.4% for the Crimson Sweet variety as a function of the fruit weight. A mixture response surface model, using the Scheffé canonical polynomial equation, was used to fit the treatment means and predict the sensory responses. In the watermelon, pineapple and acerola juices formulation, the special cubic polynomial equation showed goodness of fit and the coefficient of determination R 1 of the model was 86.3%. Contours plots given by the model showed that the combination containing 70 % watermelon + 30% pineapple, 60% watermelon + 40% pineapple and 60% watermelon + 30% pineapple + 10% acerola, obtained a degree of preference corresponding to "liked" on the scale. The processed products were anaÍyzed for chemical composition, qualitative enzyme activity, instrumental color determination, microbiology examination and acceptability testing. The natural watermelon juice presented 91 % of moisture content and a pH of 5.3. The total sugar content constituted approximately 77 % of the total solids of the juice. 4.05% of the sugars were reducing sugars, of which 2.64% consisted of frutose and 1.41 % of glucose. The lycopene pigment, responsible for the red color, had an average value of 3.66mg/l00g in the natural juice and 16.71mg/l00g in the concentrated juice. Vitamin C was not detected in the processed juice. Peroxidase and polifenoloxidase activities continued after the thermal treatment, though the presence of substrate was not detected. The combination containing 85 % watermelon and 15 % passion fruit served to 86 non-trained testers obtained a mean between "liked slight1y" and "liked" resulting in 86% of acceptance, 6 % of indifference and 8 % of rejection. From the results obtained it would seem that it is technically viable for natural and concentrated watermelon juice to be processed and formulated in mixture with pineapple, acerola and passion fruit
Doutorado
Doutor em Tecnologia de Alimentos
Landon, Nicolas. "Almost sure optimal stopping times : theory and applications." Phd thesis, Ecole Polytechnique X, 2013. http://pastel.archives-ouvertes.fr/pastel-00788067.
Full textMatsuura, Fernando Cesar Akira Urbano. "Processamento e caracterização de suco integral e concentrado congelado de acerola." [s.n.], 1994. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254395.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
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Resumo: Nesse trabalho foi realizado um estudo, à nível de planta piloto, sobre os efeitos do tratamento térmico e da concentração no suco de acerola, e a estabilidade química, físico-química, sensorial e microbiológica durante a vida-de-prateleira dos produtos. A finalidade do estudo do efeito do tratamento térmico foi a possibilidade de utilização do suco integral de acerola como matéria-prima para a produção de outros derivados da fruta, sendo essa primeira parte do trabalho denominada de estudo da matéria-prima, enquanto o efeito da concentração foi estudado com o objetivo de avaliar o suco concentrado como produto e também como matéria-prima. Essa etapa do trabalho foi chamada estudo da concentração. No experimento, as matérias-primas utilizadas foram frutas para o estudo da matéria-prima e suco integral comercial para o estudo da concentração. No estudo da matéria-prima, as frutas foram processadas e divididas em dois lotes. Um desses lotes sofreu tratamento térmico em pasteurizador à placas com temperatura de 88°C por 45 segundos, enquanto o outro não sofreu tratamento. Posteriormente, foram armazenados congelados à temperatura de -18°C. Análise sensorial do suco de acerola com diferentes teores de polpa mostrou que o suco integral foi o preferido, e consequentemente utilizado para o estudo da concentração. No estudo da concentração, o suco integral comercial foi dividido em dois lotes. O primeiro foi concentrado em evaporador centrífugo Centri-Therm até 16,5°Brix, enquanto o segundo lote não foi concentrado. Posteriormente, os dois lotes foram armazenados congelados à temperatura de -18°C. Os resultados do estudo da matéria-prima mostraram a estabilidade química, físico-química, sensorial e microbiológica dos sucos tratado e não tratado termicamente. O tratamento térmico provocou uma perda de ácido ascórbico ao redor de 12%. A análise sensorial dos sucos mostrou valores significativamente maiores para o suco não tratado termicamente em relação a todos os atributos avaliados. Os resultados do estudo da concentração demonstraram a estabilidade química, físico-química, sensorial e microbiológica dos sucos integral e integral concentrado. A concentração até 16,5°Brix provocou 6% de perda de ácido ascórbico, quando utilizado um evaporador centrífugo. Com a avaliação sensorial dos sucos foram obtidos valores significativamente maiores para o suco integral em relação a todos os atributos avaliados, exceto para a cor e o amargor dos sucos. Na avaliação de aceitação do sabor dos sucos adicionados de açúcar, não foi verificada diferença significativa (p<0,05) entre eles
Abstract: The effect of heat treatment and concentration of acerola juice were studied at the pilot plant level, and the chemical, physic-chemical, sensory and microbiological stabilities of the products determined during storage. The effect of heat treatment was studied with a view to the use of whole acerola juice as a raw material for the production of other acerola products, this part of the work being denominated "study of the raw material". The effect of concentration was studied with the object of evaluating the concentrated juice, both as a product and as a raw material for other products. This part of the research was known as "a study of concentration". Whole fruits were used for the study of raw material and commercial whole juice for the study of concentration. In the study of raw material, the fruits were processed and divided into 2 batches. One batch was pasteurized in a plate heat exchanger for 45 seconds at 88°C and the other was left untreated. Both batches were stored frozen at -18°C. Acerola juice with different levels of pulp was submitted to a sensory analysis in order to determine the most preferred level. The whole juice was the most preferred which was therefore used for the study of concentration. In this study, the commercial whole juice was divided into two batches. The first batch was concentrated to 16.5°Brix in a Centri-Therm centrifugal evaporator and the second batch was left untreated. Both batches were subsequently stored frozen at -18°C. The results of the study of the raw material showed the chemical, physic-chemical, sensory and microbiological stabilities of both heat treated and non heat-treated juices. The heat-treatment resulted in a loss of about 12% of ascorbic acid. The sensory analysis gave significantly higher values for the non heat-treated juice for all the attributes evaluated. The results of the study of concentration showed the chemical, physic-chemical, sensory and microbiological stabilities of both the concentrated and unconcentrated whole juices. Concentration to 16.5° Brix resulted in a 6% loss in ascorbic acid, when centrifugal evaporator was used. The sensory analysis showed significantly higher values for the unconcentrated juice for all the attributes studied with the exception of color and bitterness. No significant difference (p<0.05) between samples was detected in the evaluation of flavor acceptance when sugar was added to the juices
Mestrado
Mestre em Tecnologia de Alimentos
Park, Koo-Yong. "Quadtree grid numerical model of nearshore wave-current interaction." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301255.
Full textCoco, Giovanni. "Mechanisms for the formation of rhythmic topography in the nearshore region." Thesis, University of Plymouth, 1999. http://hdl.handle.net/10026.1/1775.
Full textKonowicz, Paul A. "Some synthetic transformations on sucrose." Thesis, University of East Anglia, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280931.
Full textGarruti, Deborah dos Santos. "Contribuição ao estudo da estabilização fisica do suco do maracuja integral (Passiflora edulis f. flavicarpa desg.)." [s.n.], 1989. http://repositorio.unicamp.br/jspui/handle/REPOSIP/255504.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
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Resumo: Neste trabalho foi estudado, a nível de laboratório, o fenômeno da sedimentação espontânea da polpa do suco de maracujá integral (Passiflora edulis f. flavicarca Deg), objetivando-se uma melhor compreensão dos fatores que influenciam a sua estabilidade física. Como matéria-prima, para os experiment os, foi utilizado suco de maracujá preservado quimicamente, processado em indústria da região de São Paulo, o qual foi denominado "suco integral". Inicialmente uma amostra desse suco integral foi homogeneizada dípcnnicament c, sendo chamada de "sue o homogeneizado" Posteriormente foram determinados a distribuição e o tamanho das partículas suspensas. Duas frações foram, então , separadas por centrifugação dos sucos: a polpa, e o liquido sobrenadante, denominado "suco centrifugado" A partir da "polpa integral" e da "polpa homogenei¬zada" preparou-se suspensões de diversas concentrações , tanto em água como em suco centrifugado (com e sem espessartesí, com as quais foi realizada uma série de ensaios de velocidade de =-.ed imenfc ac 5o . Na tentativa de minimizar ou evitar a separação de fases que ocorre no suco no mercado, utilizou-se, isoladament e ou combinados entre si, nove diferentes espessantes comerciais, em concen t rações variando de 0,0E a i,0íí ÍP/V), para que, pela modificação da viscosidade do suco centrifugado, a polpa fosse mantida em suspensão. A eficiência da ação estabilizante desses espessantes foi avaliada através de ensaios de prateleira, bem como, testes rápidos de centrifugação. Os resultados obtidos mostraram que tanto a concentração como o tamanho das partículas constituem-se em importantes fatores na estabilidade física do suco de maracujá. Foi possível estabilizar o suco pela adição de diversos espessantes a diferentes concentrações. Observou-se também que uma redução do tamanho das partículas da polpa, da ordem de 40ü, através da homogeneização mecânica, pode reduzir a quantidade de espessante necessária. Os perfis de aparência e sabor desenvolvido? Neste trabalho, para ? suco de maracujá, através do método de Análise Descritiva Quantitativa mostraram que os sucos estabilizados em laboratório não apresentaram diferenças significativas, quando comparados ao suco integral, em relação à cor, turbidez, sabor de maracujá, corpo, acidez, adstringência e impressão global. De um modo geral a adição dos espessantes provocou uma diminuição da separação de fases e? Irritação da garganta pelo suco diluído, e também uma melhora na aparência geral. Par outro lado, os mesmos espessantes causaram um pequeno aumento na intensidade do sabor estranho, sensação de pulverulento e recobrimento na língua. Dentre todos os espessantes testados recomenda-se a utilização do Amisol 4080 (amido ceroso) a 0,80%, bem como da goma guar a 0,15%, na estabilização física do suco de maracujá integral. Além de terem apresentada bons resultados nos testes de sedimen¬tação e sensoriais, ambos são bastante econômicos e não representam aumento significativo no custo do produto
Abstract: The purpose of this work was to study, in the laboratory, the spontaneous clarification which occurs in passion fruit juice (Passiflora edulis f. flavicarca Deg) to better understanding the factors influencing its physical stability. The raw material used in the experiments was a chemically preserved juice, which was processed in a commercial Plant in the São Paulo region, and was called "whole juice". A portion of this whole juice was homogenised mechanically and called "homogenized juice" The distribution and size of the suspended particles were determined in both the homogenised and unhomogenised juices. These two juices were centrifuged to obtain the pulp and the supernatant liquid or "centrifuged juice" From the "whole pulp" and the "homogenized pulp" several suspensions of different concentrations in water, as well as m centrifuged juice (with and without thickeners) were prepared, and several tests of velocity of sedimentation at ion were carried out on these preparations . In attempts to minimize or even avoid the juice spontaneous clarification, nine different commercial thickeners were added, either isolated or combined, and in concentrations ranging from 0,02 to 1,0% W/V. The objective of this was to modify the viscosity of the centrifuged juice to keep the particles suspended. This efficiency of the stabilizing action of these thickeners was evaluated by allowing the juice to stand on the shelf in a large test tube, as well as a quick test of centrifuging. The results showed that the concentration and the size of the particles were important factors for the physical stability of the passion fruit juice. Stabilization of the juice was possible using different thickeners at several concentrations. It was also observed that the reduction of 40% in the particle size by mechanical homogenization was able to diminish the amount of thickener needed. The appearance and flavor profile, from the Quantitative Descriptive Analysis method, developed in this work for the passion fruit juice, indicated that the stabilized juices made in the laboratory did not show significant differences, when compared to the whole juice, in relation to color, turbidity, passion fruit f1avor, body, acidity, astringency and overa11 impression. In general, the addition of the thickeners caused a reduction in separation of the phases and in the irritation of the throat, for the diluted juice, and improved the overall appearance. On the other hand, these additives showed a small increase in the intensity of an off-flavor, chalky sensation and recovery of a film on the tongue. From these observations of all the thickeners tested, it can be recommended, for the physical stabilization of the passion fruit juice, 0.80% Amisol 4000
Mestre em Tecnologia de Alimentos
VASCONCELOS, Norma Abreu e. Lima Maciel de Lemos. "Inclusão e realidade: um olhar sobre a pessoa surda." UFPB, 2006. https://repositorio.ufsc.br/handle/123456789/190811.
Full textBARREYRE, PHILIPPE. "Physiopathologie et dangers du surf moderne." Lille 2, 1992. http://www.theses.fr/1992LIL2M048.
Full textKamimura, Hitty-Ko [UNESP]. "Influência do processamento sobre o perfil sensorial e a atividade antioxidante do suco de laranja." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/88525.
Full textO suco de laranja é um produto de grande importância para a economia nacional, tendo papel relevante na pauta de exportações brasileiras. A maior parte da produção brasileira de laranja é destinada à produção de suco concentrado congelado – FCOJ, que é predominantemente exportado para a Europa e América do Norte. O processamento do suco envolve as etapas de extração, filtração, concentração, mistura e de resfriamento. O tratamento térmico empregado na etapa de concentração para redução do volume de água, redução da carga microbiana e inativação enzimática, também é capaz de favorecer reações que alteram a composição do suco e promovem alterações sensoriais e degradação da vitamina C, além de arrastar e degradar compostos voláteis importantes para o sabor do suco. Os objetivos deste trabalho foram reunir informações referentes ao processamento do FCOJ e aos fatores relacionados às alterações de qualidade que podem ocorrer durante o processamento, avaliar o suco de laranja das principais etapas do processamento do FCOJ, de forma a avaliar as etapas mais críticas em relação às alterações no perfil sensorial e perda de qualidade e avaliar a atividade antioxidante total (AAT), os compostos fenólicos totais (TPC) e as características físico-químicas do suco de laranja das etapas do processamento do FCOJ. O suco de laranja das principais etapas do processamento do FCOJ foi avaliado por 12 julgadores selecionados e treinados utilizando a análise descritiva quantitativa (ADQ). Foram gerados 21 descritores para aparência (5), aroma (6), sabor (8) e textura (2). O suco das etapas de extração e filtração foram caracterizados por alta intensidade de sabor doce, aroma e sabor natural, aroma e sabor cítrico e aroma e sabor óleo, com perfil sensoriais semelhantes. O suco da etapa de extração também foi caracterizado por gomos, tanto...
Orange juice is a important product to the national economy, with great relevance to the Brazilian exportations. The majority of Brazilian orange production is used in the frozen concentrated orange juice (FCOJ) production, which is mainly exported to North America and Europe. The FCOJ processing covers the extraction, filtration, concentration, blend and cooling steps. The heat treatment used in the concentration step to reduce the water activity, favors reactions that drastically changes the juice composition and promotes sensory changes, ascorbic acid degradation, and changes the volatile compounds important to the aroma and flavor of the juice. The aim of this work was to gather informations regarding the FCOJ processing and the factors related with the juice quality changes during the processing, to evaluate the orange juice from the main steps of the FCOJ processing, in order to identify the most critical steps regarding the sensory changes and loss of quality using QDA and to evaluate the total antioxidant activity (TAA), the total phenolic compounds (TPC) and the physicochemical characteristics of the orange juice from the steps of the FCOJ processing. The orange juice from the main steps of the FCOJ processing was evaluated by 12 selected and trained judges using QDA. 21 descriptors were generated for appearance (5), aroma (6), flavor (8) and texture (2). The juices from the extraction and filtration steps were characterized by high intensity of sweet aroma, natural aroma and flavor, citric aroma and flavor, and oil aroma and flavor, with similar profile. The juice from the extraction step was also characterized by vesicles from both appearance and texture. The juice from the concentration, blend and cooling steps were characterized by high intensity of cooked aroma and flavor, with similar profile. The sensory profile of the orange juice was noticeably affected... (Complete abstract click electronic access below)
Higgins, Coleen C. "From Harmon to harmony : equitable utilization and the U.S.-Mexico river regime /." Genève : l'auteur, 1987. http://catalogue.bnf.fr/ark:/12148/cb349455884.
Full textContient le texte du traité conclus entre les Etats-Unis d'Amérique et le Mexique le 3 février 1944. Bibliogr. p. I-XI.
Soetaert, Paul. "De Bergen van barmhartigheid in de Spaanse, de Oostenrijkse en de Franse Nederlanden : 1618-1795 : Geschiedenisprijs 1983 van het Gemeentekrediet /." Brussel : Gemeentekrediet, 1986. http://catalogue.bnf.fr/ark:/12148/cb34954912z.
Full textBerto, Maria Isabel. "Avaliação experimental do controle da pasteurização continua de um fluido modelo de suco de laranja." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/255744.
Full textTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
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Doutorado
Spinelli, Fernanda Rodrigues. "Validação de métodos para detecção da adição de suco de maçã em sucos de uva." reponame:Repositório Institucional da UCS, 2013. https://repositorio.ucs.br/handle/11338/685.
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Due to the increased consumption of grape juice, quality control is a reality in every country producers and consumers of this product. The most common form of adulteration is by substitution with apple juice. The adulterated samples can be identified by specific analyzes, as apple juice has some compounds that the grape does not have or has in small amounts, as phlorizin and sorbitol. Therefore, analytical methods capable of identifying the composition of grape juices and determine its authenticity are needed to ensure effective control of the quality of the grape juices. For this reason, the present study aimed to validate the analytical methods of phlorizin and sorbitol to detect addition of apple juice in grape juice. Initially, the methods were validated for the analysis of phlorizin and sorbitol, carried out in liquid chromatography. After validation of the methods, tests were conducted additions of apple juice cultivars Gala and Fugi in grape juices from cultivars Concord, Isabel and Bordô, and were analyzed grape and apple commercial juices. All grape juices show that high concentrations of sorbitol also showed high concentration of phlorizin. Through this study, it was observed that the methods of phlorizin and sorbitol are effective to detect the addition of apple juice grape juice.
Nait, Achour Thiziri. "Les rôles de la SUMO protéase SENP2 et du corépresseur LCoR dans la signalisation œstrogénique." Thesis, Montpellier 2, 2011. http://www.theses.fr/2011MON20206.
Full textEstrogens are involved in the proliferation of normal breast epithelial cells. The prolonged exposure to these hormones comes along with an increase of the risk of breast cancer.development. Estrogen receptors (ERs) mediate the effects of estrogens. The activity of these receptors is finely tuned by a large number of transcriptional cofactors, but also by post-translational modifications. This work aimed at understanding the impact of these regulations on estrogenic signalling. It was recently described that sumoylation could strongly affect ER-dependent activity. SUMO conjugation is a dynamic process which is reversed by SUMO specific proteases also known as SENtrin Proteases (SENPs). In a first study, we investigated the role of SENP2, in ER-dependent transcriptional activity. We showed that SENP2 could acts as a transcriptional cofactor independently of its catalytic activity by strongly repressing ER-dependent transcriptional activity. We also provided evidence for a role in in breast cancer cell line proliferation. In a second part of the work we investigated the mechanism of action of the transcriptional cofactor LCoR (Ligand-dependent Corepressor) with a specific emphasis on the relationship between LCoR and another ER cofactor, RIP140 (Receptor Interacting Protein of 140 kDa). We characterized a crossed expression modulation of the two transcription cofactors. We also depicted an interaction between these two corepressors and a regulation of LCoR activity by RIP140. Our work provides new insights in identifying new coregulators of ER and contributes to a better understanding of both LCoR and RIP140 mechanism of action, and therefore of estrogenic signalling
Astolfi, Filho Zailer. "Encapsulação de sucos de frutas por co-cristalização com sacarose /." São José do Rio Preto : [s.n.], 2003. http://hdl.handle.net/11449/90769.
Full textBanca: Luis Alexandre Pedro de Freitas
Banca: Célia Maria Landi Franco
Resumo: A encapsulação de sucos concentrados de limão e maracujá pelo processo de co-cristalização com sacarose foi avaliada pela determinação de propriedades físicas e fisico-químicas dos produtos obtidos. O processo de co-cristalização foi conduzido a partir da concentração de um xarope de sacarose até a supersaturação, quando então era adicionado o material a ser encapsulado. A partir daí, a mistura era submetida a uma intensa agitação que induzia à nucleação e à aglomeração do produto. O objetivo principal do trabalho foi avaliar o efeito da produção de suco adicionada e do pH do suco sobre a umidade, solubilidade, densidade aparente e ângulo de repouso dos produtos obtidos. Também foram estudados o comportamento higroscópico e a cinética de degradação de vitamina C do material encapsulado, em função das variáveis citadas acima. Finalmente, pelo uso da calorimetria diferencial de varredura, foram obtidas informações a respeito da influência da proporção de suco e do pH sobre as transições de fase observadas e sobre a microestrutura dos produtos co-cristalizados. Os produtos obtidos apresentaram menores umidades em menores proporções de sucos e pHs e as densidades resultaram na faixa em que se encontram a maioria dos pós alimentícios. O tempo de solubilização foi menor em maiores proporções de suco e baixos pHs. Os ângulos de repouso dos produtos foram satisfatórios se comparados com a faixa em que se encontram os pós da matriz encapsulante. Os materiais menos hidroscópicos foram os preparados com menor quantidade de suco e em menores pHs. A degradação de vitamina C durante a armazenagem foi menos acentuada em baixas proporções de suco e em menores pHs, tendo o suco de maracujá... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Encapsulation of concentrated lemon and passion fruit juices by co-crystallization with sucrose was studied by determining physical and physicochemical properties of the obtained products. The co-crystallization was carried out by concentrating a sucrose syrup until supersaturation and, then, adding the core material. The mixture was submitted to an intensive mixing, which induced nucleation and product agglomeration. The main objective of this work was to evaluate the effects of the added proportion of juice and juice pH on moisture, solubility, apparent density, and repose angle of co-crystallized products. The hygroscopic behavior and ascorbic acid degradation of the encapsulated material as affected by the above variables were also studied. The product microstructure was investigated by differential scanning calorimetry and polarized light microscopy. Lower moisture was obtained with lower juice proportions and lower pHþs, and apparent densities resulted in the range of the majority of food powders. Solubility increased with higher juice proportion and lower pHþs, whereas repose angles were similar to those of the encapsulating matrix. Less hygroscopic materials were obtained with lower juice proportion and lower pHþs. The passion fruit product presented lower rates of vitamin C degradation and degradation rates decreased with decreasing juice proportions and pHþs. The DSC thermograms and polarized light micrographs showed that the encapsulating matrix and the co-crystallized products were in the crystalline state.
Mestre
Ferrell, Brent. "INVESTIGATION OF THE CRITICAL RESIDUES AT THE C-TERMINUS OF THE E.COLI PERIPLASMIC CHAPERONE, SURA." UKnowledge, 2012. http://uknowledge.uky.edu/chemistry_etds/8.
Full textAdorno, Roselene Aparecida Coser. "Reologia de sucos de frutas tropicais : manga, maracuja, mamão e goiaba." [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256467.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
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Resumo:O trabalho apresenta a caracterização reológica de quatro sucos de frutas tropicais: manga, maracujá, mamão e goiaba, realizada através de um reômetro rotacional, Haake, modelo RV20. Os efeitos da concentração e temperatura foram analisados nas faixas de 10 a 25°Brix e 10 a 50°C. Para sucos de maracujá, mamão e goiaba também foram realizados ensaios a 30 e 40°Brix na faixa de temperatura entre 10 e 30°C. No caso do suco de maracujá foi possível determinações à temperatura de 50°C para estas concentrações maiores. A composição química e física dos diversos sucos também foi verificada, determinando-se o conteúdo de açúcares totais e redutores, grau Brix, sólidos totais, acidez e conteúdo de pectina. Para completar a caracterização dos sucos, a densidade foi medida em função da concentração. Em todos os casos, os sucos apresentaram um comportamento não-Newtoniano, sendo que o modelo de Herschel-Buikley (H-B), foi o que melhor ajustou os dados experimentais. Uma leve dependência com o tempo foi verificada. Os parâmetros Teológicos do modelo obtidos pelo ajuste através de regressão não- linear, foram correlacionados em função da temperatura e concentração. Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital.
Abstract: In this work, a rheological caracterization of four tropical fruit puree (mangos, passion fruit, papaya and guava) was made with a Rotoviscometer (Haake model RV 20). Concentration and temperature effects were analised over a concentration range of 10-25 Brix, in temperature steps of 10°C up to 50°C. Passion fruit, papaya and guava concentrates (30 and 40 Brix) were also analised at lower temperatures (10-30°C). At these concentrations for the passion fruit, it was possible to verify the behaviour up to 50°C. Chemical composition was determined (total sugar, reducing sugars, total solids, pectin content and total acidity) and density measurements were correlated as functions of concentration. The experimental results show that rheological non-Newtonian behaviour of these juices. It follows the Herschel-Bulkley (H-B) model, being weakly time-depedent. Rheological model parameters were obtained by non-linear regression of the experimental data. These parameters were correlated as a function of temperature and concentration.Note: The complete abstract is available with the full electronic document.
Mestrado
Mestre em Engenharia de Alimentos
Perina, Ricardo de Assis. "Valor de empresas do setor sucroalcooleiro: um modelo de avaliação." Universidade de São Paulo, 2003. http://teses.usp.br/teses/disponiveis/11/11132/tde-20181127-161949/.
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Hands, Katherine J. "Defining the mechanism of arsenic-induced degradation of PML." Thesis, University of Dundee, 2012. https://discovery.dundee.ac.uk/en/studentTheses/a5b14b03-25b0-457f-8dd9-9facf98b6415.
Full textGibertoni, Cristiane Fátima [UNESP]. "Ultra e micro filtração para clarificação de suco de yacon (Polymnia sonchifolia) na obtenção de xarope rico em frutanos." Universidade Estadual Paulista (UNESP), 2003. http://hdl.handle.net/11449/93536.
Full textFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
O objetivo deste trabalho foi utilizar ultra e microfiltração para clarificação de suco de yacon (Polymnia sonchifolia) na obtenção de xarope rico em frutanos. Procedeu-se um ensaio inicial de ultra e microfiltração de suco de yacon produzido sem que as raízes tivessem sido submetidas a processo de branqueamento. Este ensaio demonstrou que, embora tenha ocorrido clarificação do permeado em função da filtração tangencial, houve escurecimento enzimático das raízes, resultando em produtos mais escuros do que os oriundos de raízes submetidas ao branqueamento. Os ensaios seguintes objetivaram avaliar os processos de filtração tangencial, utilizando-se de temperaturas de 20, 40, 60 e 80°C. Observou-se aumento do fluxo de permeado em função do aumento da temperatura. Análises de umidade, sólidos totais, cinzas, açúcares redutores, acidez total, proteínas, °Brix e pH feitas nos sucos de alimentação, permeados e retentatos, demonstraram que o aumento da temperatura não interferiu nas características químicas dos produtos, embora ocorra clarificação dos permeados. Escolheu-se a temperatura de 40°C para dar continuidade aos trabalhos. Procedeuse a seguir ensaios combinando pressões transmembrana de 2 e 4 bar com velocidades tangenciais de 2 e 4 m/s. Verificou-se que a combinação de pressão transmembrana 2 bar com velocidade tangencial de 4 m/s resultou em maior fluxo de permeado. As análises químicas demonstraram não haver interferência da pressão e velocidade na composição química dos permeados e retentatos, em relação aos sucos de alimentação. Para conhecer a variabilidade de fluxos de permeado durante a operação do piloto foram feitos testes de repetibilidade. As baixas variabilidades de resultados de fluxo médio permitiram concluir que as condições utilizadas... .
The objective of this work was to utilize ultrafiltration and microfiltration techniques for the clarification of yacon (Polymnia sonchifolia) juice, in obtainment of rich contents of fructans syrup. An initial essay of ultrafiltration and microfiltration was carried out with yacon’s juice produced without the submission of the roots to the bleaching process. This essay demonstrated that there was enzymatic browning of the roots, though occurs permeate clarifies due to the tangential filtration, resulting in darker products than the roots submitted to the bleaching process. The next essays seek to evaluate the tangential filtration process, by testing temperatures of 20, 40, 60, and 80oC. It was observed an increase of the permeate flow following the temperature increase. Moisture, total solids, ash, reducer sugars, total acidity, proteins, oBrix, and pH’s analysis of the feed juices, permeates and retentates demonstrated that the temperature rise didn’t interfere in the products chemical attributes, though occurs the clarify of the permeates. The temperature of 40oC was chosen for the continuity of the works. Following essays were made by combination of transmembrane pressure of 2 and 4 bars with tangential velocities of 2 and 4 m/s. It was verified that the transmembrane pressure of 2 bar with tangential velocity of 4m/s combination resulted in a greatest permeate flux. The chemical analysis demonstrated that there isn’t pressure and velocity’s interference in permeates and retentates chemical composition regarding to the feed juices. Repeated tests were made to know the permeate flux variability during the equipment operation. The low variabilities of the medium flux results permitted to conclude that the used conditions can be reproduced without problems. The best combinations of temperature, velocity, and pressure were utilized in essays with crescent Volumetric... (Complete abstract, click electronic address below).
LIMA, Juliana Corrêa de. "Estratégias de ensino para acadêmicos surdos na Educação Superior." UFSM, 2018. https://repositorio.ufsc.br/handle/123456789/190835.
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