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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.
31

Development in the West Indies and migration to Canada

Pool, Gail Richard January 1979 (has links)
No description available.
32

Multinational co-operation in air transport in the commonwealth Caribbean / Air transport co-operation in commonwealth Caribbean.

Archer, Ian DeV. January 1968 (has links)
No description available.
33

Monstruosité et identités littéraires une étude sur les littératures antillaise et québécoise /

Guyot, Adrien. January 2009 (has links)
Thesis (M.A.)--University of Alberta, 2009. / Title from pdf file main screen (viewed on Oct. 20, 2009). "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Arts in French Language, Literatures and Linguistics, Department of Modern Languages and Cultural Studies. University of Alberta, Fall 2009." Includes bibliographical references.
34

Novas espécies e novo gênero de Eriophyidae (Acari :Prostigmata) associados a fruteiras tropicais e Caesalpiniaceae no Estado de Pernambuco e observações biológicas de Aceria n. sp. em Caesalpinia echinata La / A New genus and new species of Eriophyidae (Acari :Prostigmata) from fruit trees and Caesalpiniaceae in Pernambuco State and biological observations on Aceria n. sp. on Caesalpinia echinata Lam.

BRITTO, Erika Pessoa Japhyassu 01 February 2008 (has links)
Submitted by (edna.saturno@ufrpe.br) on 2016-11-24T13:35:28Z No. of bitstreams: 1 Erika Pessoa Japhyassu Britto.pdf: 2779069 bytes, checksum: 65ed4f9d30ce091e13acb79846c62eeb (MD5) / Made available in DSpace on 2016-11-24T13:35:28Z (GMT). No. of bitstreams: 1 Erika Pessoa Japhyassu Britto.pdf: 2779069 bytes, checksum: 65ed4f9d30ce091e13acb79846c62eeb (MD5) Previous issue date: 2008-02-01 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / A new genus and a new species of Phyllocoptini Eriophyidae, Shrekin graviolae Britto and Navia, from Annona muricata L., and a Nothopodini Eriophyidae, Cosella decorata Britto and Navia, from the Malpighia emarginata Sess and Moc. were described from females and males. Furthermore, Aceria n.sp., an Aceriini Eriophyidae from Caesalpinia echinata Lam. with a complex life cycle is described. Observations on the biology of the last species are presented. Whole life cycle develops under patches of webbings built by the deutogyne on the surface of the leaves. The immature stages development for deutogynes lasts 16-17 days, at 26°C, 12h photophase and 60% relative humidity. Periods of egg incubation, larval and nymphal stages were 5-6, 6-7 and 5-6 days, respectively. Individual "nest" sizes ranged from 0.07-3.2 mm2 and their relative numbers of females was always 75-76% of deutogynes and 24-25% of protogynes. This is the first case of a deuterogynous eriophyoid mite with two forms of males from the tropics. / Foram descritos um novo gênero e uma nova espécie de Phyllocoptini Eriophyidae, Shrekin graviolae Britto & Navia, em Annona muricata L., e nova espécie de Nothopodini Eriophyidae, Cosella decorata Britto & Navia, em Malpighia emarginata Sess & Moc. e uma espécie de Acerini Eriophyidae, Aceria n.sp., de Caesalpinia echinata Lam., a qual apresenta um ciclo de vida complexo. Observações biológicas sobre Aceria n. sp. foram feitas durante um ano. O ciclo de vida destes ácaros ocorre sob teias construídas pela deutogine sobre as folhas. A duração dos estágios imaturos da deutogine de Aceria n. sp. é de 16-17 dias, a 26 °C, 12 h de fotofase e 60% de umidade relativa. O período de incubação do ovo foi de 5-6 dias e a duração dos estágios de larva e ninfa, 6-7 dias e 5-6 dias, respectivamente. Observou-se que os “ninhos” podem apresentar tamanhos variando entre 0,07 a 3,20 mm2 e são compostos de aproximadamente 75,0 a 76,1% de deutogines e 23,9 a 25,0% de protogines. Este é o primeiro caso de um ácaro eriofídeo comdeuteroginia com duas formas de machos nos trópicos.
35

Desenvolvimento de doce de fruta em massa funcional de valor calorico reduzido, pela combinação de goiaba vermelha e yacon desidratados osmoticamente e acerola / Fruit candy development em.massa functional of value reduced caloric, for the combination of goiaba red and yacon dehydrated osmoticamente and acerola

Ventura, Fernanda Cardoso 05 May 2004 (has links)
Orientador: Nelson Horacio Pezoa Garcia / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos / Made available in DSpace on 2018-08-03T21:38:54Z (GMT). No. of bitstreams: 1 Ventura_FernandaCardoso_M.pdf: 1877574 bytes, checksum: c23eb257d3323059ba76be42b8665eb3 (MD5) Previous issue date: 2004 / Resumo: Ultimamente tem aumentado a preocupação pela relação entre dieta e saúde, estimulando o consumo de alimentos saudáveis, nutritivos e funcionais e ainda de valor calórico reduzido, que tenham nutrientes com potencial protetor de saúde. Esses alimentos além de satisfazer requerimentos nutricionais e sensoriais básicos desempenham efeitos fisiológicos benéficos que diminuiriam o risco de doenças crônicas cardiovasculares, cancerígenas ou outras. Existe uma grande variedade de produtos para fins especiais, sendo aqueles destinados a dietas de redução de açúcares um dos mais expressivos. Assim, as indústrias têm o desafio de desenvolver processamentos em condições amenas de operação, tempo e temperatura, provocando menores alterações de coloração, sabor e nutricionais. Com base nisso, a finalidade desse trabalho foi concentrar os nutrientes da goiaba vermelha e yacon, através da desidratação osmótica e desenvolver um doce em massa com as frutas desidratadas osmoticamente e acerola, de valor calórico reduzido através de processo contínuo. Primeiramente, foi realizado um estudo para otimizar a desidratação osmótica utilizando xarope de sorbitol e de sacarose. Os ensaios foram realizados utilizando planejamento fatorial completo, variando-se o tempo, temperatura e concentração da solução osmótica, visando a maximização da perda de umidade e minimização da incorporação de sólidos. Na desidratação osmótica utilizando xarope de sorbitol foram obtidas perdas de umidade de 35 a 43% % e incorporação de sólidos de 5,7 a 8% na goiaba vermelha e no yacon 53 a 55% de perdas de umidade e 6,02 a 6,46% de incorporação de sólidos. Os resultados obtidos mostraram que utilizando xarope de sorbitol se conseguem maiores perdas de umidade em relação ao xarope de sacarose, contudo há também uma maior incorporação de sólidos, mas isto seria irrelevante no caso de produtos de baixo valor calórico, nos quais o sorbitol é comumente utilizado, por apresentar um valor energético de 2,4kcal/g, enquanto que a sacarose fornece 4kcal/g. Outro objetivo foi também obter um doce em massa de goiaba vermelha, yacon e acerola, com um maior teor em sólidos de frutas que um produto convencional. Foram realizadas três formulações para análise sensorial, sendo utilizado o teste de aceitação. Os doces em massa tiveram boas médias de aceitação sensorial, variando de ¿gostei ligeiramente¿ a ¿gostei moderadamente¿, diferindo entre si (p< 0,05) nos atributos cor, sabor e impressão global, e não apresentando diferença significativa no atributo aroma. A formulação preferida foi com 50% goiaba vermelha, 30% acerola e 20% yacon, processada em tratamento térmico contínuo. Os resultados da caracterização química (pH, acidez e atividade de água) e física (sinerese, cor e textura) dos doces em massa mostraram concordância com os trabalhos encontrados na literatura. Através da avaliação microbiológica o produto foi considerado como ¿comercialmente estéril¿, indicando que o tratamento térmico foi eficiente para manter a estabilidade microbiológica do produto / Abstract: Concern about the relation between diet and health has greatly increased recently, stimulating the consumption of healthy, nutritive and functional foods, preferably of reduced caloric value, containing potentially health-protecting nutrients. In addition to satisfying the basic nutritional and sensory requirements, these foods play a beneficial physiological role in decreasing the risks of chronic cardiovascular diseases, cancer and other diseases. A great variety of special purpose foods exist, those destined for low sugar diets being the most prominent. Thus modern industry faces the challenge of developing processes operating under mild time/temperature conditions so as to minimize alterations in color, flavor and nutritional quality. Based on this idea, the objective of this research was to concentrate the nutrients of red guava and yacon by osmotic dehydration and develop a reduced calorie solid preserve using the osmotically dehydrated fruits plus West Indian cherry by way of a continuous process. Initially the osmotic dehydration process was optimized using sorbitol and sucrose syrups. A complete factorial experimental design was used for these trials, varying the time, temperature and concentration of the osmotic solution, aiming at maximizing moisture loss and minimizing solids incorporation. Osmotic dehydration using sorbitol syrup resulted in moisture losses of from 35 to 43% and solids incorporation between 5.7 and 8% for red guava and moisture losses of from 53 to 55% for yacon with solids incorporation from 6.02 to 6.46%. The results showed that higher moisture losses were obtained using the sorbitol syrup than with the sucrose syrup, although the solids incorporation was also higher. However, in low calorie products this is irrelevant since sorbitol is frequently used in such products due to its low energy value of 2.4kcal/g as compared to 4kcal/g for sucrose. A further objective was to prepare a solid preserve from red guava, yacon and West Indian cherry containing higher fruit solids content than the conventional product. Three formulations were prepared for the sensory acceptance test. The three formulations received good mean scores for acceptance, varying from ¿liked slightly¿ to ¿liked moderately¿, with significant differences (p£0.05) amongst the three for the attributes of color, flavor and overall impression but with no significant difference for aroma. The most preferred formulation was that containing 50% red guava, 30% West Indian cherry and 20% yacon, processed by a continuous heat treatment. The results of the chemical (pH, acidity and water activity) and physical (syneresis, color and texture) characterizations agreed with those of similar studies reported in the literature. The microbiological evaluation showed the product to be commercially sterile, indicating that the heat treatment was efficient in maintaining the microbiological stability of the product / Mestrado / Mestre em Tecnologia de Alimentos
36

Pitanga e acerola : estudo de processamento, estabilidade e formulação de nectar misto / Surinam cherru and west Indian cherry: study of processing, stability and formulation of a mixed nectar

Lopes, Alessandra Santos 06 May 2005 (has links)
Orientador: Hilary Castle de Menezes / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos / Made available in DSpace on 2018-08-04T09:18:53Z (GMT). No. of bitstreams: 1 Lopes_AlessandraSantos_D.pdf: 3488044 bytes, checksum: f87fb3e276cf6bc8933b4387bcc1c4bd (MD5) Previous issue date: 2005 / Resumo: A pitanga (Eugenia uniflora L.) é um fruto nativo das regiões Sul e Sudeste do Brasil, e muito pouco investigado cientificamente. Graças às suas qualidades vitamínicas e sensoriais, a pitanga foi o principal objeto de estudo deste trabalho de tese. A acerola, excelente fonte de vitamina C, também foi abordada neste trabalho. O estudo da acerola consistiu basicamente na avaliação da polpa como matéria-prima para a indústria de néctares mistos, objetivando o enriquecimento em vitamina C do néctar de pitanga. Em relação aos processos tecnológicos aplicados às polpas e néctares, foram estudados os processos de extração de polpa e os métodos de conservação tradicionais: congelamento e pasteurização térmica. Como conseqüência lógica, também foi avaliada a estabilidade dos produtos processados com o intuito de determinar a ocorrência de alterações físicas, físico-químicas e sensoriais. O estudo do processo de extração de polpa (Capítulo 2) foi realizado em dois diferentes tipos de despolpadores: despolpador de escovas inclinado e despolpador de pás horizontal. Para os frutos de pitanga, os equipamentos de escovas e pás apresentaram rendimentos de polpa de 58,47±3,92% e 46,61±1,80%, respectivamente. A polpa obtida no despolpador de pás apresentou uma diferença total de cor (.E*) em relação aos parâmetros de cor L*, a* e b* dos frutos in natura, significativamente superior (p¡Ü0,05) a polpa processada no despolpador de escovas. Por isso, o despolpador de escovas se mostrou mais eficiente que o despolpador de pás para obtenção de polpa de pitanga, devido ao maior rendimento e menor .E*. No estudo de estabilidade da polpa de pitanga preservada por congelamento (Capítulo 3) durante 90 dias, os resultados obtidos mostraram que a reação cinética da degradação dos parâmetros de cor a* e diferença total de cor (.E*) se ajustaram aos modelos cinéticos de 1a ordem e zero ordem, respectivamente. Ao mesmo tempo, houve uma forte queda na aceitabilidade sensorial e na atitude positiva de compra do néctar formulado com a polpa de pitanga armazenada por 90 dias a ¿18oC, devido às significativas mudanças na qualidade física do néctar formulado com a polpa de pitanga congelada. No estudo de pasteurização térmica da polpa de pitanga (Capítulo 4) foi empregado um planejamento composto central (22), onde as variáveis independentes foram os parâmetros tempo e temperatura de processamento, e as variáveis dependentes foram cor instrumental (a*, b* e .E*) e atividade enzimática. O binômio tempo-temperatura de pasteurização térmica mais adequado para a conservação da polpa de pitanga foi de 59 a 68s a 90oC, considerando as mínimas alterações de cor instrumental e a inativação das enzimas presentes. O estudo do comportamento reológico da polpa de pitanga (Capítulo 5) na faixa de temperatura de pasteurização de 83 a 97oC determinou que a polpa de pitanga apresentou comportamento pseudoplástico e o modelo de Herschel-Bulkley foi considerado o mais adequado. Os índices de comportamento de fluido (n), variaram na faixa de 0,448 a 0,627. O efeito da temperatura sobre a viscosidade aparente pôde ser descrito pela equação análoga à de Arrenhius, observando-se a diminuição da viscosidade aparente com o aumento da temperatura. A energia de ativação do escoamento viscoso da polpa de pitanga, para a taxa de deformação de 100s-1, foi de 2,947 Kcal.gmol-1. No estudo de avaliação dos processos de despolpamento e estabilidade da polpa de acerola (Capítulo 6) preservada por congelamento durante 180 dias, foi determinado que o despolpador mais adequado para a extração da polpa de acerola foi o extrator de escovas, pois apresentou um maior rendimento (62,83%) e menor alteração da cor instrumental. No estudo de estabilidade da polpa de acerola, obtida no extrator de escovas, foi verificado que a mesma apresentou ótima estabilidade física, físico-química e sensorial até o final do experimento, exceto para o parâmetro de cor instrumental .E* (diferença total de cor), que variou significativamente (p¡Ü0,05) durante o período de estocagem da polpa de acerola. Paralelamente, foi observado um decréscimo significativo estatisticamente (p¡Ü0,05) no teor de antocianinas totais (16,23%). De acordo com a análise sensorial do atributo cor, a variação no teor de antocianinas totais não comprometeu significativamente (p>0,05) a aceitabilidade da polpa de acerola estocada por 180 dias a ¿18oC. No estudo de formulação e pasteurização térmica de néctar misto através da metodologia de superfície de resposta (Capítulo 7), foi verificada a maior aceitabilidade das formulações com maiores proporções de polpa de pitanga (26,4% a 32,9%). Na etapa de pasteurização do néctar misto foi determinada que na faixa de tempo entre 39s a 60s em temperaturas que variam de 83oC a 85oC, os néctares mistos pasteurizados de acerola e pitanga apresentaram as menores alterações sensoriais, e conseqüentemente maior a aceitabilidade / Abstract: Pitanga (Eugenia uniflora L.) is a native fruit of the southern and south-eastern regions of Brazil, little studied scientifically. Pitanga was the main objective of this thesis due to its vitamin content and sensory qualities. West Indian cherry, an excellent vitamin C source, was also included in the study. The research on West Indian cherry was basically the evaluation of its pulp as a raw material for the mixed nectar industry, aiming to enrich the pitanga nectar with respect to vitamin C. The technological processes applied to the pulps were the extraction processes and the traditional methods of preservation: freezing and heat pasteurisation. As a logical sequence, the stability of the processed pulps was also evaluated, checking for physical, physicochemical and sensory alterations. The extraction process (Chapter 2) was carried out with two types of pulper: an inclined brush pulper and a horizontal blade pulper. For pitanga, the brush and blade pulpers gave pulp yields of 58.47±3.92% and 46.61±1.80% respectively and the pulp obtained using the blade pulper presented a significantly greater (p¡Ü0.05) total difference in colour (.E*) with respect to the colour parameters L*, a* and b* as compared to the in nature fruits, than that obtained using the brush pulper. Thus the brush pulper was shown to be more efficient due to a greater yield and smaller .E*. The study of pitanga pulp stability during 90 days of frozen storage (Chapter 3) showed that the degradation kinetics of the parameters a* and .E* fitted the 1st and zero order kinetic models respectively. At the same time there was a distinct loss in sensory acceptance and in the positive attitude to buying the nectar formulated with the pitanga pulp stored for 90 days at ¿18ºC, due to significant changes in the nectar formulated with this pulp. A 2² central composite experimental design was used in the study of the heat pasteurisation of pitanga pulp (Chapter 4), the independent variables being the process parameters of time and temperature and the dependent variables, the instrumental colour (a*, b* and .E*) and enzyme activity. The most adequate time-temperature binomial for the preservation of pitanga pulp by heat pasteurisation was from 59 to 68s at 90ºC, when considering minimal alterations in instrumental colour and inactivation of the enzymes. A study of the rheological behaviour of the pitanga pulp (Chapter 5) in the pasteurisation temperature range (83 to 97ºC) showed that it presented pseudoplastic behaviour, adjusting best to the Herschel-Bulkley model. The fluid behaviour index (ç) varied from 0.448 to 0.627. The effect of temperature on the apparent viscosity could be described by the Arrenhius analogical equation, the apparent viscosity decreasing with increase in temperature. The activation energy for viscous flow of the pitanga pulp was 1.947 Kcal.gmol-1 for a deformation rate of 100s-1. In the study on extraction procedures and stability of West Indian cherry pulp (Chapter 6) stored frozen for 180 days, the brush pulper was shown to be more adequate, giving a higher yield (62.83%) and lower alteration in instrumental colour. The West Indian cherry pulp extracted with the brush pulper showed excellent physical, physicochemical and sensory stability up to the end of the experiment, with the exception of the parameter .E*, which varied significantly during frozen storage. In parallel, a statistically significant (p¡Ü0.05) decrease in total anthocyanins was observed. According to the sensory analysis of the attribute colour, the variation in anthocyanin content did not significantly compromise the acceptability of the West Indian cherry pulp after 180 days of storage at ¿18ºC. In the study on the formulation and heat pasteurisation of the mixed nectar using response surface methodology (Chapter 7), a greater acceptance of the formulations containing higher proportions of pitanga pulp (26.4% and 32.9%) was observed. With respect to heat pasteurisation, temperatures between 83 and 85ºC for 39 to 60s presented the smallest sensory alterations and consequently the greatest acceptability of the mixed pitanga and West Indian cherry nectars / Doutorado / Tecnologia de Alimentos / Doutor em Tecnologia de Alimentos
37

Call Categorization and Vocal Behavior of the Florida Manatee (Trichechus manatus latirostris)

Unknown Date (has links)
Florida manatees are semisocial marine mammals that vocalize when interacting with conspecifics and to maintain contact with offspring. While many aspects of their biology have been studied, there is a dearth of information on the diversity and complexity of vocal behavior during social, nonsocial, and stressful situations. Investigations of vocal communication repertoires which define, categorize, and correlate varied call types with behavior are needed in order to understand the behavioral and social function of associated calls. Arguably the most important social bond in manatees is the period of cow/calf dependency and empirical evidence indicates cows recognize the vocalizations of offspring. Exploration of individually distinctive vocal features can provide insight on which parameters might be salient to facilitate recognition between cows/calves. This study is focused on vocal communication in Florida manatees, how calls are structured, utilized and function while animals are distressed and during social interactions in their shallow water habitats. Hydrophones recorded vocalizations from individual calves and manatees in different behavioral contexts and varying size aggregations. Analysis of the vocal repertoire indicated manatee vocalizations can be parsed into five broadly defined call types which include the hill-shaped high squeak, tonal squeak, noisy squeal, two toned chirp, and the combinatorial squeak-squeal. Furthermore, the high squeak is likely a discrete call whereas the others are graded and do not have strict boundaries between call types (Chapter 2). Broadly defined call types were used to explore call usage with variations in behavior, group size, and group composition (Chapter 3). Manatees vocalized using few call types and altered structural parameters depending on behavioral state. Calls were longer and more frequency modulated when stressed. Vocalizations produced while cavorting were higher in entropy and more frequency modulated than when manatees were resting or feeding. Vocalizations obtained from individual calves suggest that the high squeak is a stereotypical call that is produced by smaller calves. All calves had individually distinctive acoustic features that could potentially be used in recognition (Chapter 4). Lower fundamental frequencies and higher emphasized frequencies from smaller calves suggest that the fundamental frequency may not be a reliable indicator of body size in calves. This research increases our knowledge of the vocal behavior and call characteristics of the Florida manatee. / Includes bibliography. / Dissertation (Ph.D.)--Florida Atlantic University, 2020. / FAU Electronic Theses and Dissertations Collection
38

Development in the West Indies and migration to Canada

Pool, Gail Richard January 1979 (has links)
No description available.
39

OUR WORDS ARE BRICK AND MORTAR: MASCULINE RECONSTRUCTIONS OF HOME AND COMMUNITY IN WINDRUSH ERA WEST INDIAN MIGRANT LITERATURE

Layne, Jhordan 11 1900 (has links)
McMaster University MASTER OF ARTS (2014) Hamilton, Ontario (English) TITLE: Our Words are Brick and Mortar: Masculine Reconstructions of Home in Windrush Era West Indian Migrant Literature AUTHOR: Jhordan Layne, B.A. (Western University) SUPERVISOR: Professor Daniel Coleman NUMBER OF PAGES: v, 110 / This thesis examines the concept of home in West Indian migrant literature of the Windrush Era. The analysis focuses on home as a series of reference points which construct inclusions and exclusions in a given society. I postulate that the non-white, male West Indian migrant’s idea of home endures a double disruption (in the shift from the colonial patriarchal paradigm within the West Indies and in the act of migration to England) which forces him to reconstruct a notion of home within England. In the investigation, I discover that West Indian men must learn to adapt to the concomitant societal pressures of racism, imperialism, colonialism and nationalism in England, in order to build a sense of home which can withstand such pressures. In the process of this investigation, I also discover that use of the West Indian language and the pursuit of male community building is indispensable to creating new forms of masculinity which can exist in a diasporic community without necessarily reaffirming the previous colonial patriarchal paradigm. / Thesis / Master of English
40

Maternal Shadows and Colonial Ghosts in Jamaica Kincaid's <em>Annie John</em>.

Gillespie, Sandra Walton 01 August 2001 (has links) (PDF)
Although Jamaica Kincaid’s Annie John can be described as a bildungsroman or coming of age story, the novel raises complex and compelling issues. Both Annie John’s mother and the colonial school undermine her transition into adulthood by teaching Annie to devalue her individual identity and culture. When Annie questions this perception, both lash out against her. Through a close and sensitive examination of the text, the ethnocentric bias and hidden agendas of those closest to Annie is uncovered and analyzed. As West Indian writers, particularly women writers, gain more recognition, it is crucial to acknowledge and understand the effects that growing up on a colonized island has upon West Indians. A deeper reading of Annie John exposes the prejudices and power relationships that continue to haunt formerly colonized islands.

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