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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.
271

Avaliação de maracujazeiros em condições de clima temperado: produção, qualidade e compostos bioativos / Evaluation of passion fruit in temperate climate condition: production, quality and bioactive compounds

Weber, Diego 02 September 2016 (has links)
Submitted by Gabriela Lopes (gmachadolopesufpel@gmail.com) on 2017-02-08T14:39:29Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) TESE PPGA - Fruticultura - Diego Weber.pdf: 4485246 bytes, checksum: 67414caee7f82f4d4ab167eb11838cf2 (MD5) / Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2017-02-16T20:01:04Z (GMT) No. of bitstreams: 2 TESE PPGA - Fruticultura - Diego Weber.pdf: 4485246 bytes, checksum: 67414caee7f82f4d4ab167eb11838cf2 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-02-16T20:01:04Z (GMT). No. of bitstreams: 2 TESE PPGA - Fruticultura - Diego Weber.pdf: 4485246 bytes, checksum: 67414caee7f82f4d4ab167eb11838cf2 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2016-09-02 / Sem bolsa / A fruticultura é uma atividade importante no Brasil, estando muito adaptada à agricultura familiar e à proposta de diversificação da produção de pequenas áreas. Os maracujazeiros (Passifloras) são plantas que desempenham papel importante para muitos produtores familiares, devido à alta demanda de mão de obra e o considerável rendimento para pequenas propriedades. No Brasil, as espécies cultivadas de destaque compreendem o maracujazeiro-azedo (Passiflora edulis Sims.) e o maracujazeiro-doce (Passiflora alata Curtis.). Com a adaptabilidade edafoclimática da cultura na diversidade do Brasil, torna-se possível a produção de maracujá-azedo em todas as regiões do país. Entretanto, para um melhor entendimento, são necessários mais estudos em locais diferentes daqueles de cultivo comercial. As condições edafoclimáticas do Sul do Rio Grande do Sul, apresentam algumas especificidades edafoclimáticas em relação às regiões tropicais de cultivo tradicional. Para que o produtor possa diversificar a sua produção com o maracujá, são necessários estudos que possam adequar os genótipos já existentes no mercado para um novo local. Portanto, objetivou-se avaliar aspectos produtivos, a qualidade físico-química e os compostos bioativos do suco, da farinha da casca e das folhas dos genótipos de maracujazeiros comerciais cultivados em Pelotas, RS. A tese compreende três artigos e foram desenvolvidos na UFPel/FAEM, entre os anos de 2013 e 2015. O Artigo 1 foi intitulado de produção e qualidade de frutos de maracujazeiros em condições de clima temperado. Foram avaliados os genótipos: Passiflora edulis ‘Catarina’; Passiflora edulis ‘BRS Sol do Cerrado’ e, Passiflora edulis ‘BRS Rubi do Cerrado’. Todos os genótipos avaliados demonstram potencial para produção na região de Pelotas, RS. A qualidade físico-química dos frutos dos genótipos estão dentro dos parâmetros aceitáveis. O Artigo 2 foi intitulado de compostos bioativos das folhas, casca e frutos de genótipos de maracujazeiros. Foram avaliados os genótipos: ‘Catarina Roxo’ (Epagri); ‘Catarina’ (Epagri); ‘Urussanga’ (Epagri); ‘BRS Gigante Amarelo’; ‘BRS Rubi do Cerrado’; ‘BRS Sol do Cerrado’. Para as avaliações das folhas, o genótipo ‘BRS Gigante Amarelo’ não foi avaliado. Houve diferença entre os genótipos para todos os compostos bioativos avaliados. Pode-se concluir que os genótipos de maracujazeiros avaliados no presente estudo, apresentam potencial como fonte de compostos bioativos. O Artigo 3 foi intitulado de produção e qualidade de frutos do maracujazeirodoce seleção ‘Urussanga’ em condições de clima temperado. O genótipo caracterizado foi a seleção Urussanga selecionado pela Epagri, oriundo de seleções de maracujá-doce (Passiflora alata Curtis.). De uma maneira geral o maracujá-doce seleção Urussanga, demonstra potencial produtivo e frutos de qualidade físicoquímica adequados quando cultivados em condições de clima temperado. Contudo, com base nos resultados obtidos e discutidos nesta tese, pode-se concluir que a produção, a qualidade e os compostos bioativos dos genótipos de maracujazeiros avaliados podem ser explorados comercialmente por produtores que desejam diversificar a produção em região não-tradicional de cultivo. Conclui-se que a presente tese cumpriu com a justificativa inicial, que portanto , comprova a existência do potencial para a produção de maracujá em condições de clima temperado. / The fruticulture is an important activity in Brazil and is very adapted to family farming and the proposed diversification of small areas of production. The passion fruit (Passifloras) are plants that play an important role for many family farmers due to high demand of manpower and considerable income for small farms. In Brazil, the cultivated species featured include the yellow passion fruit (Passiflora edulis Sims.), the purple passion fruit (Passiflora edulis Sims.) and sweet passion fruit (Passiflora alata Curtis.). With edaphoclimatic adaptability cultural diversity of Brazil, it is possible the yellow passion fruit production in all regions of the country. However, for a better understanding, it is necessary to further studies in different locations from those of commercial cultivation. Soil and climatic conditions of southern Rio Grande do Sul (State of Brazil), has some specific soil and climate in relation to the tropical regions of traditional cultivation. So, to that the growers can diversify their production with passion fruit, it is necessary studies to adapt the genotypes already on the market, for a new location. Therefore, this work aimed to evaluate productive aspects, the physicochemical quality and bioactive compounds from juice, flour from the peel and leaves of the genotypes of commercial passionfruit grown in Pelotas, Brazil. The thesis comprises three articles and were developed in UFPel/FAEM, between the years 2013 and 2015. The Article 1 was titled production and fruit quality of passion fruit in temperate conditions. Were evaluated genotypes: Passiflora edulis ‘Catarina’; Passiflora edulis ‘BRS Sol do Cerrado’ e, Passiflora edulis ‘BRS Rubi do Cerrado’. All genotypes showed potential for production in the region of Pelotas, RS. The physicochemical quality of the fruits of genotypes are within acceptable parameters.The Article 2 was titled bioactive compounds from leaves, peel and juice of genotypes of passion fruit. Were evaluated genotypes: ‘Catarina Roxo’ (Epagri); ‘Catarina’ (Epagri); ‘Urussanga’ (Epagri); ‘BRS Gigante Amarelo’; ‘BRS Rubi do Cerrado’; ‘BRS Sol do Cerrado’. For evaluations of leaves ‘BRS Gigante Amarelo’ genotype was not evaluated. There were differences among genotypes for all bioactive compounds evaluated. It can be concluded that the genotypes of passion fruit evaluated in this study, have potential as a source of bioactive compounds. The Article 3 was entitled production and fruit quality of sweet passion fruit selection ‘Urussanga’ in temperate climate. The genotype characterized was selection Urussanga selected by Epagri, derived from sweet passion fruit (Passiflora alata Curtis.). Overall the sweet passion fruit selection Urussanga, shows productive potential and fruit physicochemical quality adequate when grown in temperate conditions. However, based on the results obtained and discussed in this thesis, it can be concluded that the production, quality and bioactive compounds of genotypes evaluated passionfruit can be commercially exploited by producers who wish to diversify production in non-traditional area of cultivation. It is concluded that this thesis comply with the initial justification, which therefore proves the existence of potential for passion fruit production in temperate climate conditions.
272

Caracterização fisico-quimica de fibra alimentar de laranja e maracuja / Characterization physicochemical of dietary from orange and passion fruit

Santana, Maristela de Fatima Simplicio de 29 June 2005 (has links)
Orientador: Carlos Alberto Gasparetto / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos / Made available in DSpace on 2018-08-04T09:22:43Z (GMT). No. of bitstreams: 1 Santana_MaristeladeFatimaSimpliciode_D.pdf: 7985534 bytes, checksum: 0c6da4f8f15db4829b97079092849637 (MD5) Previous issue date: 2005 / Resumo: O Brasil é o principal produtor mundial de laranja e maracujá, frutas que após extração de seu suco geram resíduo com alto teor de fibra alimentar. Hoje se tem, nas sociedades ocidentais, grande carência deste nutriente nas dietas e grandes problemas ambientais com este resíduo ou bagaço, que representa cerca de 50% em peso dos frutos. Por outro lado, registra-se o aumento no interesse das indústrias pelo enriquecimento de alimentos com fibra alimentar e a falta de informações científicas quanto às características físicas das partículas e propriedades tecnológicas para processamento desse tipo de material. O objetivo deste estudo foi caracterizar as fibras utilizando técnicas clássicas do sistema de tecnologias de partícula, estudar as propriedades tecnológicas e composição química, avaliando os métodos de secagem convencional em leito fixo e liofilização. Os resultados da avaliação das frações de laranja (albedo, membrana carpelar e vesícula de suco) e maracujá (albedo) mostraram altos índices de fibra total e uma composição química (proteína, lipídios, cinzas, pH, umidade, acidez e atividade de água) adequada para enriquecer alimentos. A secagem convencional promoveu uma grande redução na microestrutura, mas não afetou as propriedades tecnológicas. Foi possível estabelecer tendência de comportamento do tamanho de partícula com a área superficial, a porosidade e a densidade. Portanto, o método de secagem convencional em leito fixo pode ser considerado viável como processo de preparação / Abstract: Brazil is the main producer of orange and passion fruit which produce a large amount of fiber rich residue after juice extraction. Considering today¿s demand for dietary fiber supplementation and environmental pollution, it is a promising opportunity to research on the practical use of those residues which amounts to 50% of the fruit weight. This research work was aimed to evaluate physicochemical properties of those fibers which are of utmost importance in the technology of it¿s processing and use. Fibers were tray and freeze dryed in order to compare results from two different drying methods. Analysis showed high fiber content and protein, lipid, ash, moisture, water activity, pH and acidity compatible to utilization as ingredients in processed food. Surface area, porosity and density were strongly related to particle size. The conventional tray drying promoted a dramatic shrinking on the microstructure although not affecting properties of technological importance thus indicating this as a feasible process / Doutorado / Engenharia de Alimentos / Doutor em Engenharia de Alimentos
273

Désir et passion dans l'œuvre dramatique de Jóhann Sigurjónsson / Desire and passion in Jóhann Sigurjónsson’s dramatic works

Nevjinsky, Fern 11 September 2009 (has links)
ALe but de ma recherche est une interprétation psychanalytique des œuvres dramatiques de Jóhann Sigurjónsson. L'œuvre d'art reflète les préoccupations de son auteur et traite d'émotions universelles, et particulièrement des désirs et passions comme motivations primaires. J'ai entrepris l'analyse de la relation entre passions et écriture littéraire dans les œuvres de Jóhann Sigurjónsson. Dans ce but, j'ai tout d'abord étudié le poids relatif du contexte historique et culturel. Par une analyse structurale précise du texte, j'ai pu dégager les thèmes essentiels. Sous des apparences trompeuses, tous les personnages se révèlent excessifs et fragiles. Par conséquent, les passions, considérées ici comme un "avatar" de l'organisation narcissique de la personnalité, entraînent une rupture psychique, des désordres psychotiques ou la mort. La régression narcissique montre que la passion est sous la domination des pulsions de mort. Ce lien entre les passions et les diverses expressions des pulsions de mort apparaît comme une butée finale résistant à une interprétation plus poussée. / The aim of my research is to propose a psychoanalytic interpretation of Jóhann Sigurjónsson's dramatic works. Works of art support the true preoccupations of their author and concern themselves with universal feelings and especially desires and passions as primal motivations. I have undertaken an analysis of the relationship between passions and generally literary writing in the works of Jóhann Sigurjónsson. In order to do that, I have first investigated the relative role of the historical and cultural context of the plays. By means of an accurate structural analysis, the main topics are then drawn from the text. On the surface, all the characters are excessive and weak. Consequently passions, here considered as an "avatar" of the narcissistic organization of the personality, result in breakdown, psychotic disease or death. Narcissistic regression shows that the passion is dependant on a domination of the death instincts. This relationship between the passions and the various expressions of the death instincts appears as the final buttress that stands up to further interpretation.
274

La gestion de compétences comme stratégie pour la productivité : cas : l'enjeu productif du secteur des passiflores du Département du Huila / Labor skills managment as strategy for productiveness : case : the productive bet of passion fruits sector in the departement of Huila

Gil Tovar, Hernando 30 November 2015 (has links)
L’accord de compétitivité de la chaîne productive des fruits du département du Huila a priorisée les Passiflores comme un enjeu productif. Le secteur des Passiflores est caractérisé par la dispersion des superficies plantées, sans spécialisation et comme complément des revenus de l’activité productive principale. L’objectif principal de cette recherche a été la détermination des compétences professionnelles du producteur des passiflores dans le département du Huila et ses relations avec le plan de la compétitivité régionale. Pour ça on a identifié l'état actuel des compétences professionnelles, établi le lien entre les compétences professionnelles et le plan de la compétitivité pour le secteur et vérifiez que les niveaux de compétences professionnelles du producteur renforcent la productivité du secteur. La méthode de la recherche est positiviste, le mode de rationnement est l'abduction, le processus de recherche est l'exploration hybride, l’approche méthodologique est mixte et la stratégie d'accès au réel est l'étude de cas. Cette recherche, de manière générale, détermine les compétences professionnelles des producteurs de passiflores dans le département de Huila et établit les relations entre eux et le Plan de la compétitivité régionale.Les résultats de la recherche nous montrent un producteur de passiflores ayant un faible niveau de scolarité, de travail manuel, peu d'utilisation de la technologie, avec faible associativité et en attente d’appui par les agences officielles et les leaders de l'industrie. / The competitiveness agreement of the productive fruit chain of the Department of Huila has prioritized the Passion fruits as a productive bet. The Passion fruit sector is characterized by the dispersion of the planted areas without specialization and like a supplement income of the main productive activity.The main objective of this research was the identification of labor skills of the passion flower producers in Huila and its relationship with the level of regional competitiveness. For that the current state of labor skills has been identified, the link between labor skills and competitiveness for the Passion fruit sector was established and the reinforcement levels of producer labor skills to the sector productivity was also verified.The research method is positivist, the rationing mode is abduction, the search process is the hybrid exploration, the methodological approach is mixed and the access strategy to reality is the case study. This research, in general, determines the labor skills of Passion fruits producers in the department of Huila and establishes relationships between them and the regional competitiveness plan.The search results show a Passion fruit producer with low levels of education, manual work, little use of technology, with low associativity and expectative of official support by government agencies and industry leaders.
275

Drames d'amour : étude psychanalytique des crimes passionnels / Love tragedies : psychoanalytic study of crimes of passion

Laufer, Danièle 22 March 2016 (has links)
Notre pratique d’expert psychologue au pénal nous a amenée à entreprendre cette recherche, sur les crimes passionnels. Cette catégorie, non reconnue par le droit met l’accent sur ce qui se joue parfois de façon dramatique entre un homme et une femme. Amour, crime et folie fondent l’humanité.La criminologie, au XIXe siècle, à partir des aliénistes et de la médecine légale, s’inscrivant dans un mouvement de défense sociale, a posé la question de la folie et de la dangerosité de ces criminels. Au XXIe siècle, le signifiant majeur est violence faite aux femmes, la femme devient victime ayant des droits à défendre. La psychanalyse, avec Freud et Lacan mettent la dimension de l’acte et du désir au cœur de la psyché. Lacan a montré, avec Aimée la dimension imaginaire du crime, puis sa dimension symbolique dans les années 50. Avec son dernier enseignement, et l’invention de l’objet a, la causalité du passage à l’acte est psychique et s’inscrit dans le réel.Reconnaître le hors sens du crime permet de ne pas disjoindre passage à l’acte et personnalité, et peut amener le sujet à accéder à sa responsabilité et à être jugé en conséquence.Les neurosciences ne peuvent dire ce qu’est l’amour ou le crime, les techniques actuarielles ne permettent pas de le prédire.L’amour est un semblant qui voile l’impossible du rapport sexuel. La clinique continuiste de la psychose, formulée par Miller met l’accent sur la nécessité de l’invention au cas par cas. Lors de séparations, lorsque l’amour ne fait plus sinthome, face à une irruption de jouissance, le sujet s’il ne trouve pas de solution, peut passer à l’acte.Il s’agit alors de suicide altruiste, dans un acte d’ « amour altruiste ». / Our pratical experience as a psychologist expert in court, has led us to undertake this research into crimes of passion. This category not recognized by the law, emphasizes the dramatical situation arising between man and woman. Passion, crime and madness are the basis of mankind.19th century criminology from psychiatrist and forensic science onwards, as part of a social protection movement has stated the question of madness and dangerousness of these criminals. Nowadays, in the 21st century, the most significant signifier is woman’s abuse : women are victims with rights to fight for.Psychoanalysis, with Freud and Lacan make act and desire, central to psyche. Lacan has shown with Aimée the imaginary dimension of crime, then evolving into a symbolic dimension in the fifties. With his latest teaching and the invention of the object « a », causality of acting out is psychic and anchors in the real.Admitting the absurdity of crime prevents us from separating act and personality and can bring the subject to accepting his responsability and be judged consequently.Neurosciences are helpless to say what is passion or crime, and actuarial techniques do not help us to predict it. Love is a pretence masking the impossibility of the sexual intercourse. The clinical approach of continuist psychosis, as formulated by Miller, emphasizes the importance of invention distinctively. During break-up proceedings, when love is not a « sinthome » any longer, faced with a surge of overwhelming pleasure, the subject when unable to find an answer to his problem, may act out.We may then speak of altruistic suicide in an « altruisitic act of love ».
276

Die Ou-Testamentiese sitate in die lydensgeskiedenis van die vierde Evangelie

Hattingh, Hendrik Pieter 03 April 2014 (has links)
M.A. (Biblical Studies) / The Old Testament quotations in the New Testament have always been a problem. Many studies have been devoted to the subject. Because of new manuscript discoveries (e.g. Qumran) interpretation is given a new look. This also applies to new methods of exegesis. A preliminary chapter studies the necessity of yet another study on this matter. It also deals with methodological considerations and such necessary details. From the outset it is obvious that new questions should be asked of old problems. This study deals basically with such quotations in Chapter 19 of the Fourth Gospel. The quotations are, in the same sense as the Gospel, unique. lot seems as if the Gospel narrator randomly used four O.T. words as fulfillment of some Scripture of some passages in John. To determine why and how he used these words the probable O.T. sections are explored to determine the original text (Masoretic text) and the Greek translation text (LXX, Chapter 1). Chapter 2 is devoted to the question whether the O.T. context is brought into account in the quotation of John. This study yields little in understanding the N.T. text, although some. The third chapter considers the unique character of the Fourth Gospel and particularly the Passion as described In this Gospel. The following chapter analyzes the structure of the pericope by means of structural analysis. These details proved valuable as exegetic framework, and point to possible function of the quotation...
277

Passion and Fear effects on student entrepreneurs

Kuri, Avijit, RenFei, Wang January 2017 (has links)
Entrepreneurship has been gotten fruitful attentions all around the world, it also has become one of the most significant engines for both national economic and social growth. The internal factors, which are able to affect entrepreneur’s behaviors during the whole entrepreneurship life cycle, are gradually becoming a hot topic in both practical and academic research fields. Especially for some of the famous researchers, such as Melissa Cardon and Mitchell, J.R. are leading the academic research of the relation between entrepreneurial emotions (e.g., passion and fear) and behaviors. In this study, our objective is to understand how passion and fear effect student entrepreneur’s behaviors when they are running their businesses at the early stage of entrepreneurship. Moreover, semi structured interview has been chosen to collect qualitative materials for this Master thesis paper. In this case, eight student entrepreneurs from Linnaeus University in Vaxjo, Sweden who are studying and running their business at the same time, or have finished their study already but started their business while they were students are selected by us for doing the interview. Furthermore, we broadly discussed about different stages of entrepreneurship, also entrepreneurial passion and fear along with entrepreneurial internal emotions such as cognition, self-regulation, self-efficacy, persistence, which could influence student entrepreneurs’ behaviors to start up their business and afterwards. Finally, after empirical analyzing we found that the bright side of passion and fear have positive effects on student entrepreneurs’ behaviors, whilst the negative effects of passion and fear can hinder their behaviors during the early entrepreneurial process.
278

Mettre en scène le théâtre religieux traditionnel dans une démarche interculturelle

Sabouri, Nikta January 2016 (has links)
Ce projet de recherche, qui comporte un volet créatif, a pour objectif l’exploration des possibilités de mise en scène du mystère français, forme théâtrale qui n’est presque plus jouée, à partir d’éléments empruntés au code de représentation du ta'zieh, une forme théâtrale iranienne encore très vivante. Ce projet de création s’inscrit dans une démarche interculturelle qui vise à mettre en contact deux formes théâtrales religieuses relevant de traditions anciennes. À partir d’un modèle théorique proposé par Patrice Pavis et en nous inspirant de la démarche créatrice de quelques artistes, nous avons monté, dans le cadre d’un laboratoire, un extrait de la pièce de théâtre médiévale Le Mystère de la Passion d'Arnoul Gréban, afin non pas de reconstituer à l’identique les représentations médiévales du mystère français, mais de créer, par l’amalgame de deux formes théâtrales religieuses issues des cultures chrétienne et iranienne, une forme nouvelle.
279

Produção de Mudas de Maracujazeiro em Diferentes Compostos Orgânicos / Production of passion Fruit seedlings on different organic compounds

Ferreira, Douglas Fernandes 07 September 2009 (has links)
Made available in DSpace on 2016-05-02T13:55:27Z (GMT). No. of bitstreams: 1 DouglasFernandesFerreira-dissertacao.pdf: 211453 bytes, checksum: 3dcd31736456666363e7099c4acb6dfb (MD5) Previous issue date: 2009-09-07 / The population growth compelled to the increase of food s production, demanding bigger productivity, consequently it caused bigger quantity agro-industrial s residue per area. If they are treated and reutilized inadequately they can cause environmental problems. The utilization of these agricultural residues through simple process as decomposition can solve the big environmental problem generated and aggregate value to the producers. The major point of this study is to evaluate the development from passion fruit saplings on different substrata stemmed from decomposition of swine s excrements and vegetable residues. In order to do that were utilized the following vegetable residues: coffee s peel, rice s peel, cane pulp and eucalyptus s sawdust. The treatments utilized were substrata on the portion of 100, 75, 50 and 25% of organic compound stemmed from decomposition and the remainder was filled with soil. Thus, the treatments of: 1 to 4 utilized the compound stemmed from swine s excrements and rice s peel, 5 to 8 utilized compound stemmed from swine s excrements and coffee s peel, 9 to 12 utilized compound stemmed from swine s excrements and cane pulp and 13 to 16 utilized compound stemmed from swine s excrements and sawdust. Also it was utilized one treatment which the composition is known on the market, being 30% of bovine dung and 70% of soil to compare with others treatments. The delimitation used was on blocks called DBC, factorial essay 4x4+1. The factor A was the substratum s type and the Factor B was a proportion of the substratum plus standard treatment. Saplings were evaluated after 60 days of planting. Were evaluated green and dry bulk from aerial part and radicular system. Also were evaluated length from aerial part and radicular system and number of leaves from passion fruit s saplings. The statistics analyses made were: the test Scott-Knott (p<0,05) to the Factor A, regression to the Factor B and contrast to the additional treatment. The treatments shaped by swine s excrements compound and coffee s peel represented better physical/chemistry characteristics. The swine s excrements and rice s peel on the portions of 75 to 100% of organic compounds had better results in almost all characteristics of substratum passion fruit saplings. / O grande crescimento populacional forçou o aumento da produção de alimentos, exigindo maior produtividade; consequentemente, gerou maior quantidade de resíduos agroindustriais por área, os quais, tratados e reaproveitados inadequadamente, passaram a causar problemas ambientais. O aproveitamento desses resíduos agrícolas por meio de processos simples como a compostagem pode resolver o grande problema ambiental gerado e agregar valor para os produtores, utilizando esses compostos em diferentes formas. Objetivou-se com este trabalho avaliar o desenvolvimento das mudas de maracujazeiro em diferentes substratos, derivados da decomposição de dejetos de suínos e resíduos vegetais. Para isto foram utilizados os seguintes resíduos vegetais: casca de café, casca de arroz, bagaço de cana e serragem de eucalipto. Os tratamentos foram substratos com proporção de 100, 75, 50 e 25% de compostos orgânicos derivados das compostagens, e o restante foi completado com terra de barranco, de tal maneira que os tratamentos de 1 a 4 foram constituídos de dejetos de suínos e casca de arroz; de 5 a 8, derivados de dejetos de suínos e casca de café; de 9 a 12, derivados de dejetos de suínos e bagaço de cana e de 13 a 16, composto derivado do dejetos de suínos e serragem. Também foi utilizado um tratamento de composição já conhecida no mercado, tendo 30% de esterco bovino e 70% de terra de barranco, para comparação com os demais tratamentos. O delineamento utilizado foi em blocos casualizados (DBC), em ensaio fatorial 4X4+1, sendo que o Fator A foi o tipo de substrato e Fator B foi a proporção de substrato e um tratamento adicional (Padrão). A avaliação das mudas ocorreu após 60 dias do plantio. Foram avaliadas as massas verdes e secas da parte aérea e do sistema radicular, o comprimento da parte aérea e do sistema radicular e o número de folhas das mudas de maracujazeiro. As analises estatísticas foram o teste de Scott-Knott (p<0,05) para o Fator A, a regressão para o Fator B e o contraste para o tratamento adicional. Os tratamentos constituídos de dejetos de suínos e casca de café apresentaram melhores características físico-químicas para constituição de substrato para formação de mudas de maracujazeiro. As proporções de 75 e 100% de compostos orgânicos, nos tratamentos formados por dejetos de suínos e casca de café, foram melhores em praticamente todas as características, na formação de substrato para mudas de maracujazeiro.
280

Resource constraints and sustainable entrepreneurship in sub-Saharan Africa: An effectual view

Dawa, Samuel G. January 2018 (has links)
The study seeks to explain how sustainable entrepreneurship occurs in a resource constrained setting. This is important as it improves our understanding of how entrepreneurs respond to adversity and develop opportunities that jointly address the social, environmental and economic dimensions of entrepreneurship. Previous research has discussed the antecedents, outcomes and contextual conditions that drive sustainable entrepreneurship. However, what is absent from this growing research body is knowledge of the mechanisms through which individuals engage in this type of entrepreneurship. The study seeks to answer the following research question: “How do individuals faced with resource constraints engage in sustainable entrepreneurship?” Using effectuation as a lens, a multi-method qualitative approach based on multiple case studies was adopted in this research and a mix of inductive and deductive analyses, also referred to as abductive analysis was employed. A sample of 5 sustainable enterprises were purposively selected in Uganda, located in sub-Saharan Africa. The results show that resource constraints compel the entrepreneurs to seek expertise and resources from others with mutual goals while controlling expenses. In the process the entrepreneur learns and adapts to the emergent opportunity. The entrepreneur’s actions are further influenced by passion that sustains the activity in the face of challenges. In this research, sustainable entrepreneurship is further explicated showing that the social, economic and environmental objectives exist in a state of shifting, supportive interaction of one another. The study clarifies our understanding of how entrepreneurs cope with inadequate resources. It explains the mechanisms through which individuals contending with resource constraints employ control as opposed to prediction strategies to exploit entrepreneurship opportunities. In this way the study contributes to the literature by proposing the fusion of cognitive and affective dimensions in realizing sustainable entrepreneurship goals. The study further suggests that the multiple objectives that typify the pursuits of sustainable entrepreneurs serve as supportive mechanisms and this puts into question arguments that these firms face comparatively larger challenges than those that singularly pursue economic objectives. / Thesis (PhD)--University of Pretoria, 2018. / Gordon Institute of Business Science (GIBS) / PhD / Unrestricted

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