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1
Biradar, Rakesh. "Analysis and Prediction of Community Structure Using Unsupervised Learning." Digital WPI, 2016. https://digitalcommons.wpi.edu/etd-theses/138.
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In this thesis, we perform analysis and prediction for community structures in graphs using unsupervised learning. The methods we use require the data matrices to be of low rank, and such matrices appear quite often in real world problems across a broad range of domains. Such a modelling assumption is widely considered by classical algorithms such as principal component analysis (PCA), and the same assumption is often used to achieve dimensionality reduction. Dimension reduction, which is a classic method in unsupervised learning, can be leveraged in a wide array of problems, including prediction of strength of connection between communities from unlabeled or partially labeled data. Accordingly, a low rank assumption addresses many real world problems, and a low rank assumption has been used in this thesis to predict the strength of connection between communities in Amazon product data. In particular, we have analyzed real world data across retail and cyber domains, with the focus being on the retail domain. Herein, our focus is on analyzing the strength of connection between the communities in Amazon product data, where each community represents a group of products, and we are given the strength of connection between the individual products but not between the product communities. We call the strength of connection between individual products first order data and the strength of connection between communities second order data. This usage is inspired by [1] where first order time series are used to compute second order covariance matrices where such covariance matrices encode the strength of connection between the time series. In order to find the strength of connection between the communities, we define various metrics to measure this strength, and one of the goals of this thesis is to choose a good metric, which supports effective predictions. However, the main objective is to predict the strength of connection between most of the communities, given measurements of the strength of connection between only a few communities. To address this challenge, we use modern extensions of PCA such as eRPCA that can provide better predictions and can be computationally efficient for large problems. However, the current theory of eRPCA algorithms is not designed to treat problems where the initial data (such as the second order matrix of communities strength) is both low rank and sparse. Therefore, we analyze the performance of eRPCA algorithm on such data and modify our approaches for the particular structure of Amazon product communities to perform the necessary predictions.
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Díaz, Montalba Karla Denisse, Mora Tomás Gerlach, and Buzolic Francisco Ignacio Vera. "El pasar de Erica." Tesis, Universidad de Chile, 2011. http://repositorio.uchile.cl/handle/2250/135174.
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Memoria para optar al Título de Realizador(a) en Cine y Televisión<br>La presente Memoria de Título se encuentra dividida en dos partes: la primera es la Bitácora sobre el proceso de realización del documental titulado “El pasar de Erica”, y la segunda es una pequeña guía que habla sobre la etapa de Desarrollo de un proyecto documental.
La Bitácora tiene como objetivo principal dar a conocer en un tono personal y en primera persona, todo el proceso de creación de la Obra de Título, desde el origen de la idea hasta el resultado final; además de reflexionar de una forma autocrítica sobre dicha experiencia. El segundo segmento pretende sistematizar y describir los principales ejes o puntos de la “etapa de desarrollo” de un proyecto documental, con el fin de que sirva de utilidad a los que se enfrentan por primera vez a la realización.
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Chalfant, Amy E. "Dynamics of an ERICA cyclone." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/27003.
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McGuire, Avery Faye. "Phylogeny and biogeography of Erica /." Electronic thesis, 2003. http://etd.wfu.edu/theses/available/etd-12162003-111147/.
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Malan, Michelle. "Intraspecific variation in Erica coccinea." Master's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/6672.
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The genus Erica is the most specious in the Cape Floristic Region, with a large range of habitats, pollination syndromes and fire survival strategies. Erica coccinea, like many other Cape Erica species, has high intraspecific variability between populations. In addition to variability in floral characteristics such as colour, this species includes two distinct regeneration forms: a resprouter form which survives fire by resprouting from dormant buds in a swollen lignotuber, and a seeder form which does not survive fire, but whose populations regenerate from fire-triggered seed germination. Previous studies have shown that these two regeneration forms are genetically determined and this dissertation investigates further the differences in floral morphology, phenology, fecundity and genetic relatedness across 29 populations. Results show patterns of seeder individuals investing more effort into nectar and seed production than resprouters and differences in flower colour and flowering phenology between the two fire life history strategies. A PST-FST analysis, comparing genetic variability to variability in floral traits shows a strong selective force working on anther length in the seeder form. A complete separation of flowering phenology between seeder and resprouter individuals in 'mixed' populations where the two forms co-occur leads to speculation that this might be a case of incipient speciation.
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Dignon, Niki. "The Reproductive biology of Erica pudens." Bachelor's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/14122.
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Erica is the largest genus in the Cape Florisitic Region (CFR) boasting a diverse range of floral morphology and pollination systems. Even though it is such a diverse genus, there is minimal research examining the pollination biology of specific species. This research inspects the pollination biology of Erica pudens. To do this we carried out pollinator exclusions, hand pollination experiments, rodent trapping, camera observations and pollen/ovule counts. This research also establishes whether E. pudens is another example of convergent evolution in Erica by establishing its phylogenetic position. E. pudens possesses floral characteristics that are consistent with the rodent-pollination syndrome. These characteristics include tightly-packed, pendulous inflorescences with a prostrate habit, found close to the floor, with a dull flower colour and winter flowering times. This research also found that E. pudens offers a high volume of nectar per floral head (up to 20.9μl) with a comparably high sugar concentration (23.7%). Even though these characteristics suggested rodent-pollination, there was no other evidence that conclusively demonstrated this. Only three rodents were captured, and few pollen tetrads were found in the faeces of the two Rhabdomys pumilio individuals (average of 13 and 1 respectively). There was very little footage captured of rodent activity around E. pudens flowers and none to demonstrate the foraging activities of a potential pollinator. The exclusion of pollinators showed no significant difference in swollen ovule dimensions between bagged flowers and caged flowers. Breeding experiments showed no significant difference between self-pollinated flowers and cross-pollinated flowers. These results suggested no need for a pollinator and the ability of E. pudens to undergo self-pollination. This could be an example of pollinator failure (due to small rodent populations) and the consequent evolution of self-pollination. The phylogenetic studies showed that E. pudens was another example of convergent evolution within Erica.
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Malan, Michelle. "Self-pollination in the genus Erica." Bachelor's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/25791.
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The ability of flowers to self-pollinate was investigated in eight species of the diverse Erica genus. Self-pollination was found to occur in five out of the eight species, with mainly bird pollinated species having a high degree of selfing. The use of a broken anther ring as an indication of visitation and pollination of the flowers was also investigated and it was found that two species are potentially useful in this regard. An inverse relationship between the degree of selfing and near neighbour distance was found across the species. The resprouting Erica cerinthoides was found to have a UV signal, it also had the most dispersed population, highest nectar sugar concentration and a high degree of self-pollination. Erica paludicola, which is an endemic that occurs in only one other population on the Cape Peninsula, had the highest degree of self-pollination. I speculate that the high degree of selfing in Erica is one of the reasons the genus is so diverse, and that the ability to self will preserve this diversity in the face of increasing habitat destruction and fragmentation, at least temporarily.
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Dick, Martina. "Korrosionsanatomie, Zytologie und Funktionsdiagnostik im Vergleich zu pathohistologischen Befunden des gesunden und erkrankten exokrinen Pankreas von Hunden." Giessen : VVB Laufersweiler, 2008. http://d-nb.info/989910229/34.
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Lane, Timothy Glenn. "ERICA IOP 5A : mesoscale structure and frontal evolution /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA322564.
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Thesis (M.S. in Meteorology and Physical Oceanography) Naval Postgraduate School, September 1996.<br>Thesis advisor(s): Carlyle H. Wash, Paul A. Hirschberg. "Seotember 1996." Includes bibliographical references (p. 77-79). Also available online.
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Autelli, Erica [Verfasser]. "Il Genovese Poetico attraverso i Secoli / Erica Autelli." Frankfurt a.M. : Peter Lang GmbH, Internationaler Verlag der Wissenschaften, 2021. http://d-nb.info/1228749124/34.
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Spinelli, Julia Marcia. "An investigation of the ERICA IOP-5A cyclone." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23711.
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Leonard, Jenny. "Germination success and drought response in Erica coccinea." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/15559.
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Resprouters and seeders are two common phenotypes found in fire-prone ecosystems. Although the distribution of the two forms is usually attributed to fire frequency, it has been proposed that the distribution of resprouter and seeder Erica in the Cape Floristic Region (CFR) of South Africa is determined more by water availability. Erica seeders are predicted to withstand the mild droughts of the southwest CFR better than Erica resprouters, which would account for the abundance of seeders in this region. This thesis tested the assumptions that 1) seeders germinate more quickly and successfully than resprouters and 2) seeders survive mild drought better than resprouters. A germination experiment (Chapter 2) and a drought experiment (Chapter 3) were conducted using Erica coccinea, a common Erica species in the CFR, which contains both a resprouter and a seeder form. Germination success was also tested for a third form of E. coccinea found only in fire refugia. I predicted that this form would not require smoke as a cue for germination. Results indicated that (1) resprouters germinated faster than seeders in the presence of smoke, (2) seeders had better germination success than resprouters in the absence of smoke, (3) the "pyrofuge" form did not require smoke to germinate and (4) seeders had lower survival than resprouters during drought. Overall, these results refuted the proposition that E. coccinea seeders have improved germination and drought tolerance. However, variation between populations within the seeder form indicated that more populations should be tested to verify that these results represent the species as a whole. Due to the lack of variation between populations of the "pyrofuges", it is clear that this form has adapted to its' fire-free environment by allowing for germination in the absence of fire.
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Powell, Amy L. "Erica and I: A Photographic Battle with Perception." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1285059415.
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Hirata, Edson Kiyoharu. "Respostas fisiológicas da rúcula ao cultivo sob telas fotoconversoras no inverno e verão." Universidade do Oeste Paulista, 2014. http://bdtd.unoeste.br:8080/tede/handle/tede/435.
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Previous issue date: 2014-03-26<br>Despite producing best in mild temperatures, the rocket has been cultivated throughout the year in various regions. In tropical areas, the use of photoconversor screens of different shading levels modify the intensity of solar radiation and the spectrum of light on the crops , also changing the temperature of the environment . The aim of this study was to evaluate the physiological responses of the rocket under photoconversor screens during the winter and summer in tropical climate region in São Paulo state. The impact of this technology on productivity and anatomy was evaluated. The field experiment was conducted in randomized block design with four replications. The rocket was grown in beds covered on the top and sides with the screens red, blue, black and thermo-reflective. Additionally the treatment in full sun was evaluated. The response curve to light, chlorophyll fluorescence, chlorophyll content, adaxial and abaxial epidermis, palisade and spongy, stomatal density and venation were evaluated. The evaluation of fresh and dry biomass and productivity was performed when the rocket reached 450 degree day. The results showed that photoconversor screens distinctly modify the environment during the winter and summer, but do not cause significant changes in the photosynthetic process of plants in different screens colors and seasons studied, as well as the density of epidermal cells. In all treatments the spongy parenchyma was higher than palisade parenchyma in the summer, the reverse occurred in winter. Changes in the intensity and spectrum of light as well as the temperature provided superior performance of red screens, with higher values of height and leaf area in the winter and of the thermo-reflective screens in the summer.<br>Apesar de produzir melhor em temperaturas amenas, a rúcula tem sido semeada ao longo do ano em várias regiões. Em áreas tropicais, o uso de telas coloridas de diferentes níveis de sombreamento modificam a intensidade da radiação solar e o espectro de luz que incide nas culturas, o que altera também a temperatura do ambiente. O objetivo desse trabalho foi avaliar as respostas fisiológicas da rúcula cultivada sob telas fotoconversoras no inverno e verão em região de clima tropical no Estado de São Paulo e o impacto dessa tecnologia sobre a produtividade e a anatomia da planta. O experimento foi conduzido a campo no delineamento em blocos ao acaso com quatro repetições. A rúcula foi cultivada em canteiros cobertos na parte superior e laterais pelas telas vermelha, azul, preta e Aluminet® e adicionalmente foi avaliada a testemunha a pleno sol. Foram realizadas avaliações quanto à curva de resposta à luz, fluorescência da clorofila a , teor de clorofila, epiderme adaxial e abaxial, parênquima paliçádico e esponjoso, densidade estomática e de venação. A avaliação de biomassa fresca e seca e determinação de produtividade foi realizada quando a cultura atingiu 450 graus dia. Os resultados evidenciam que as telas fotoconversoras modificam o ambiente distintamente no inverno e no verão, porém não provocam alteração significativa no processo fotossintético das plantas nas diferentes cores de tela e épocas estudadas, assim como na densidade das células epidérmicas. Em todos os tratamentos a espessura do parênquima esponjoso foi superior ao paliçádico no verão, ocorrendo o inverso no inverno. As modificações na intensidade e espectro de luz e da temperatura proporcionaram desempenho superior da tela vermelha, com maiores valores de altura e área foliar no inverno e das telas Aluminet® no verão.
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Bennini, Bachir. "Structures de composées phénoliques isolés d'Erica cinerea (éricacées)." Limoges, 1993. http://www.theses.fr/1993LIMO304D.
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Cameron, Steven R. "Mesoscale frontal evolution of the ERICA IOP-5A cyclone." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA274906.
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Thesis (M.S. in Meteorology and Physical Oceanography) Naval Postgraduate School, September 1993.<br>Thesis advisor(s): Carlyle H. Wash ; Paul A. Hirschberg. "September 1993." Bibliography: p. 71-72. Also available online.
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Greer, Susan N. "Mesoscale surface analysis of the ERICA IOP-5 cyclone." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/26626.
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The mesoscale surface structure of an explosively deepening storm that developed during Intensive Observation Period (IOP) 5 (18-20 January 1989) of the Experiment on Rapidly Deepening Cyclones over the Atlantic (ERICA) was examined to determine the influence of surface forcing on explosive cyclogenesis. Aircraft, buoy and ship observations were converted to a 20 km gridded data set in order to generate objective analyses of the surface pressure and temperature fields comparable to the best hand analyses. The Brown-Liu boundary layer model was then used to calculate surface sensible heat fluxes from the gridded data sets. These analyses showed that the most significant feature that distinguished the IOP-5 storm from a typical nonexplosive storm was the region of sustained positive heat fluxes that occurred east of the low center. This feature, combined with substantial warm advection and conditions of moist symmetric neutrality in the baroclinic zone of the warm front, supports destabilization of the boundary layer and enhanced low-level baroclinicity. Thus, the positive heat fluxes fuel the convective transport of heat and moisture to the upper atmosphere and enhance the sensible and condensation heating that contribute to explosive cyclogenesis
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Lilly, Craig D. "Mesoscale surface analyses of the ERICA IOP-2 cyclone." Thesis, Monterey, California: Naval Postgraduate School, 1990. http://hdl.handle.net/10945/27623.
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Approved for public release; distribution unlimited.<br>The mesoscale structure of an explosively deepening open-ocean cyclone, the Intensive Observation Period (IOP) 2 of the Experiment on Rapidly Intensifying Cyclones over the Atlantic (ERICA) which occurred 13-14 December 1988, was studied. Aircraft, buoy and ship observations were plotted in 3 h blocks, and detailed hand-analyses of surface pressure and temperature, as well as frontal and cyclone structure, were prepared. The analyses were then converted to a 20 km grid using a Cressman analysis scheme, and the gridded fields passed to a Brown-Liu planetary boundary layer (PBL) model to calculate surface latent and sensible heat fluxes. The results of the mesoscale surface analysis showed that the regions east and northeast of the low featured less warm thermal advection than expected for a typical maritime cyclone and a low- level easterly flow that had a 5-10 C thermal disequilibrium between the sea surface and the overlying air. This caused substantial positive heat fluxes east of the low throughout the 12 h prior to and during rapid deepening. This pattern of surface interaction is substantially different from other cyclones and suggests that surface processes contributed significantly to the cyclogenesis.
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Pereira, John J. "TOVS Satellite Soundings of the ERICA IOP-2 Cyclone." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA237998.
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Thesis (M.S. in Meteorology)--Naval Postgraduate School, June 1990.<br>Thesis Advisor(s): Wash, Carlyle H. Second Reader: Nuss, Wendell A. "June 1990." Description based on title screen as viewed on October 20, 2009. DTIC Indicator(s): Satellite meteorology, Atmospheric sounding, ERICA(Experiment on Rapidly Intensifying Cyclones over the Atlantic), TIROS/N Satellite, TOVS(TIROS/N Operational Vertical Sounder), Explosive cyclogenesis, Cyclogenesis. Author(s) subject terms: Meteorology, Satellite Remote Sensing, TOVS soundings, Explosive Cyclogenesis. Includes bibliographical references (p. 65-66). Also available online.
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Silva, Ítalo Macedo [UNESP]. "Efeitos alelopáticos de microcistinas em rúcula (Eruca sativa Mill.)." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/87843.
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silva_im_me_rcla.pdf: 340011 bytes, checksum: 05cf698f37e837803ba622b1fe6bf9e7 (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>As cianotoxinas são produzidas por diversos gêneros de cianobactérias, possuem ação hepatotóxica e foram as responsáveis por vários casos de intoxicação em mamíferos. Estudos com hortaliças têm demonstrado os efeitos das microcistinas (MCs) sobre a germinação de sementes, o desenvolvimento das plântulas e o metabolismo, além do acúmulo nos tecidos foliares. O que caracteriza uma importante via de contaminação para o homem através da irrigação com água contendo cianotoxinas. Esse trabalho teve como objetivo investigar os efeitos da aplicação de extrato bruto de Microcystis aeruginosa (Kützing) Kützing, com linhagem produtora e não produtora de MCs, para a germinação de sementes, e o desenvolvimento de plântulas e plantas de rúcula, variedade Folha larga. Sementes germinadas em papel mata-borrão foram expostas a concentrações entre 0,5 a 100 μg.L-1 de MC-LR equivalente durante sete dias. Plantas cultivadas em vasos contendo substrato comercial para hortaliça foram irrigadas com solução aquosa contendo 0,5 a 10 μg.L-1 de MC-totais, ou seja, considerando todas as variantes presentes no extrato com MC. Valores de massa seca correspondentes foram empregados para o tratamento com extrato bruto sem microcistina, além de controle com água. Os resultados mostraram que MC-LR equivalente causou inibição de 30% no comprimento da parte aérea das plântulas e aumento na atividade da enzima peroxidase (POD). As concentrações aplicadas de MC-totais causaram o aumento na atividade da POD apenas para a planta jovem (folhas e raízes). Com isso, os resultados indicaram que não houve efeitos alelopáticos na germinação de sementes e na formação das plântulas, cujas sementes não foram susceptíveis aos tratamentos. O mesmo ocorreu com as plantas jovens e adultas expostas aos extratos brutos, nas concentrações testadas de MC-totais. Houve diferença no estresse...<br>Cyanotoxins are produced by several cyanobacteria genera. They have hepatotoxic action and have been responsible for several cases of intoxication. Studies on vegetables have shown the effects of microcystins (MCs) in seed germination, seedling development and metabolism. Another concern is the crop irrigation with water containing cyanotoxins due to the possibility of toxin accumulation in leaf tissues. This characterizes an important route of contamination to humans. The aim of this study was to investigate the effects of non-purified extracts of Microcystis aeruginosa (Kützing) Kützing in the germination of seeds, development of seedlings and plants of rocket (large-leaf variety). Effects of both, toxic and non-toxic strains, were evaluated. Seeds were germinated on filter paper and than exposed to MC solution (concentrations ranging from 0,5 to 100,0 μg.L-1 of MC-LR equivalent) during seven days. Plants growing in commercial substrate for vegetable were irrigated with MC solution (concentrations ranging from 0,5 to 10,0 μg.L-1 de MC-total). Treatments containing the non-toxic strain extract (dry mass equivalent of the toxic treatment) and water (negative control) were carried out together with the toxic ones. MC-LR equivalent treatment caused inhibition of 30% in shoot length and increased activity of peroxidase (POD) in seedlings. The applied concentrations of MC-total caused increase in POD activity in young plant (leaves and roots). On the other hand, allelopathic effects were not found either on seeds germination or seedling development. Also, no allelopathic effects were found in the juvenile and adult plants exposed to extracts with any of the MC-total concentrations. Young and adult plants had different oxidative stress responses when exposed to extracts of the MCs-producing strain. Therefore, future studies should be conducted with individuals at the young stages of ... (Complete abstract click electronic access below)
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Silva, Ítalo Macedo. "Efeitos alelopáticos de microcistinas em rúcula (Eruca sativa Mill.) /." Rio Claro : [s.n.], 2011. http://hdl.handle.net/11449/87843.
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Orientador: Maria do Carmo Bittencourt-Oliveira<br>Banca: Massanori Takaki<br>Banca: Ana Dionisia da Luz Coelho Novembre<br>Resumo: As cianotoxinas são produzidas por diversos gêneros de cianobactérias, possuem ação hepatotóxica e foram as responsáveis por vários casos de intoxicação em mamíferos. Estudos com hortaliças têm demonstrado os efeitos das microcistinas (MCs) sobre a germinação de sementes, o desenvolvimento das plântulas e o metabolismo, além do acúmulo nos tecidos foliares. O que caracteriza uma importante via de contaminação para o homem através da irrigação com água contendo cianotoxinas. Esse trabalho teve como objetivo investigar os efeitos da aplicação de extrato bruto de Microcystis aeruginosa (Kützing) Kützing, com linhagem produtora e não produtora de MCs, para a germinação de sementes, e o desenvolvimento de plântulas e plantas de rúcula, variedade Folha larga. Sementes germinadas em papel mata-borrão foram expostas a concentrações entre 0,5 a 100 μg.L-1 de MC-LR equivalente durante sete dias. Plantas cultivadas em vasos contendo substrato comercial para hortaliça foram irrigadas com solução aquosa contendo 0,5 a 10 μg.L-1 de MC-totais, ou seja, considerando todas as variantes presentes no extrato com MC. Valores de massa seca correspondentes foram empregados para o tratamento com extrato bruto sem microcistina, além de controle com água. Os resultados mostraram que MC-LR equivalente causou inibição de 30% no comprimento da parte aérea das plântulas e aumento na atividade da enzima peroxidase (POD). As concentrações aplicadas de MC-totais causaram o aumento na atividade da POD apenas para a planta jovem (folhas e raízes). Com isso, os resultados indicaram que não houve efeitos alelopáticos na germinação de sementes e na formação das plântulas, cujas sementes não foram susceptíveis aos tratamentos. O mesmo ocorreu com as plantas jovens e adultas expostas aos extratos brutos, nas concentrações testadas de MC-totais. Houve diferença no estresse ... (Resumo completo, clicar acesso eletrônico abaixo)<br>Abstract: Cyanotoxins are produced by several cyanobacteria genera. They have hepatotoxic action and have been responsible for several cases of intoxication. Studies on vegetables have shown the effects of microcystins (MCs) in seed germination, seedling development and metabolism. Another concern is the crop irrigation with water containing cyanotoxins due to the possibility of toxin accumulation in leaf tissues. This characterizes an important route of contamination to humans. The aim of this study was to investigate the effects of non-purified extracts of Microcystis aeruginosa (Kützing) Kützing in the germination of seeds, development of seedlings and plants of rocket (large-leaf variety). Effects of both, toxic and non-toxic strains, were evaluated. Seeds were germinated on filter paper and than exposed to MC solution (concentrations ranging from 0,5 to 100,0 μg.L-1 of MC-LR equivalent) during seven days. Plants growing in commercial substrate for vegetable were irrigated with MC solution (concentrations ranging from 0,5 to 10,0 μg.L-1 de MC-total). Treatments containing the non-toxic strain extract (dry mass equivalent of the toxic treatment) and water (negative control) were carried out together with the toxic ones. MC-LR equivalent treatment caused inhibition of 30% in shoot length and increased activity of peroxidase (POD) in seedlings. The applied concentrations of MC-total caused increase in POD activity in young plant (leaves and roots). On the other hand, allelopathic effects were not found either on seeds germination or seedling development. Also, no allelopathic effects were found in the juvenile and adult plants exposed to extracts with any of the MC-total concentrations. Young and adult plants had different oxidative stress responses when exposed to extracts of the MCs-producing strain. Therefore, future studies should be conducted with individuals at the young stages of ... (Complete abstract click electronic access below)<br>Mestre
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Jaar, Farid al. "Komplikationen der endoskopisch retrograden Cholangiopankreatographie (ERCP) sowie der endoskopischen Papillotomie (EPT) und ihr Zusammenhang mit bekannten Vorerkrankungen und untersuchungsabhängigen Risiken." Wettenberg : VVB Laufersweiler, 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972529578.
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Valentini, Erica [Verfasser], and Dmitri [Akademischer Betreuer] Svergun. "Small angle scattering data archivation / Erica Valentini. Betreuer: Dmitri Svergun." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2015. http://d-nb.info/1075317355/34.
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Cirri, Erica [Verfasser]. "Regulation of the Na,K-ATPase by FXYD1 / Erica Cirri." Konstanz : Bibliothek der Universität Konstanz, 2012. http://d-nb.info/103636819X/34.
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Stončikaitė, Ieva. "Discourses of female ageing in the works of Erica Jong." Doctoral thesis, Universitat de Lleida, 2017. http://hdl.handle.net/10803/458558.
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Amb l'objectiu d'entendre millor el complex fenomen de l'envelliment i la seva interpretació, i, en particular, d’analitzar la vivència de la vellesa femenina, aquesta tesi examina l'obra de l’Erica Jong des de la perspectiva dels estudis de l'envelliment. Mitjançant l'ús de la gerontologia literària com a marc específic d'aquest estudi, que integra també les teories feministes, la tesi ofereix una anàlisi longitudinal de les obres de l’autora, i examina l’evolució de la seva percepció de l'envelliment en les mateixes. Tot contradient la tendència dominant en la recepció de l'obra de Jong, que considera superficials molts dels seus llibres, aquesta tesi argumenta que els seus textos, i en particular, els escrits en la seva maduresa, donen veu a inquietuds professionals i personals que afecten a les dones de la seva generació. Al mateix temps, aquesta tesi mostra que moltes de les pors i les ansietats dels personatges de l’escriptora estan condicionades per contextos socioculturals i discursos dominants sobre la vellesa que poden ser superats amb el pas del temps. Les obres tardanes de Jong reflecteixen una sèrie de transformacions socials, polítiques i culturals, incloses les derivades del moviment feminista de segona ona, que representen especialment la generació nord-americana de postguerra.<br>Con el objetivo de comprender mejor el complejo fenómeno del envejecimiento y su interpretación, y, en particular, de analizar la vivencia del envejecimiento femenino, esta tesis examina la obra de Erica Jong desde la perspectiva de los estudios del envejecimiento. A partir del uso de la gerontología literaria como marco específico de este estudio, que integra también las teorías feministas, la tesis ofrece un análisis longitudinal de las obras de la autora, y examina la evolución de su percepción del envejecimiento en las mismas. Contradiciendo la tendencia dominante en la recepción de la obra de Jong, que considera superficiales muchos de sus libros, esta tesis argumenta que sus textos, y en particular, los escritos en su madurez, dan voz a inquietudes profesionales y personales que afectan a las mujeres de su generación. Al mismo tiempo, esta tesis muestra que muchos de los miedos y las ansiedades de los personajes de la escritora están condicionados por contextos socioculturales y discursos dominantes sobre el envejecimiento que pueden ser superados con el paso del tiempo. Las obras tardías de Jong reflejan una serie de transformaciones sociales, políticas y culturales, incluidas las que se derivan del movimiento feminista de segunda ola, que representan especialmente a la generación norteamericana de postguerra.<br>With the objective to better understand the complex dynamics of ageing, and of female ageing in particular, this thesis examines the oeuvre of Erica Jong from an age-studies perspective. By employing literary gerontology as the specific framework of this study, and by integrating a feminist perspective in it, this study offers a longitudinal analysis of her writings and examines the ways in which the writer’s perceptions of ageing have changed over time. Contradicting the dominant tendency in the reception of Jong’s work, which considers many of her fictional writings superficial, this dissertation argues that Jong’s middle and later works in particular address important professional and personal concerns that affect women of her generation. At the same time, it shows that many of her characters’ fears and anxieties are conditioned by sociocultural contexts and dominant discourses that can be contested and transcended in later life. Jong’s later writings serve as a corpus that demonstrates how women deal with social, political, and cultural transformations, including shifting feminist and age-related ideas in an anti-ageing-driven society.
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Steiger, Matthias. "In-vitro-Untersuchungen zur Kombinationswirkung von Erucylphosphohomocholin (ErPC3) und Strahlentherapie." Diss., kostenfrei, 2008. http://edoc.ub.uni-muenchen.de/8648/.
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Almario, Bayani J. "Precipitation analyses using SSM/I measurements for selected ERICA cyclones." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/28458.
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Silva, Francisco Valfisio da. "Cultivo hidropônico de rúcula (Eruca sativa Mill) utilizando águas salinas." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/11/11143/tde-16032010-151140/.
Full textAbstract:
A degradação ambiental dos últimos anos tem motivado a preocupação a respeito da sustentabilidade das atividades humanas. O manejo inadequado da irrigação e adubação, e baixas precipitações, para lixiviar o excesso de sais aplicados via água de irrigação, podem acarretar a salinização dos solos. A hidroponia se constitui em uma alternativa, para a conservação do solo e preservação dos mananciais de água. A rúcula (Eruca sativa Mill) foi a cultura escolhida para este estudo, pois a sua produção vem se destacando entre as hortaliças. O presente trabalho teve por objetivo determinar a tolerância da rúcula à salinidade da solução nutritiva. O experimento foi conduzido em ambiente protegido localizado na área experimental do Setor de Hidráulica do Departamento de Engenharia Rural da Escola Superior de Agricultura Luiz de Queiroz - ESALQ/USP, no município de Piracicaba-SP. O delineamento experimental foi blocos ao acaso. Avaliaram-se nove níveis de salinidade obtidos com a adição de NaCl sendo estes 1,8; 3,5; 4,5; 5,5; 6,5; 7,5; 8,5; 9,5; 10,5 dS m-1. Os resultado obtidos demonstram que o aumento nos níveis de salinidade proporcionou redução em todos os parâmetros avaliados, exceto o número de folhas que não sofreu influência significativa e a relação raiz/parte aérea foi influenciada de forma crescente. A salinidade limiar encontrada foi de 2,57 dS m-1, com redução de 5,57% na produção para cada aumento unitário na salinidade. A cultura da rúcula foi classificada, como moderadamente sensível à salinidade. É possível obter produções satisfatórias utilizando águas salinas no cultivo hidropônico da rúcula.<br>The environmental degradation in recent years has motivated the concern about the sustainability of human activities. The inadequate management of irrigation and low rainfall fertilization, to leach the excess salts applied through irrigation water, can lead to soil salinization. Hydroponics constitutes an alternative to soil conservation and preservation of water sources. The rocket (Eruca sativa Mill) was the culture chosen for this study because its production has been increasing among the vegetables. This study aimed to determine the tolerance of the rocket to the salinity of the nutrient solution. The experiment was carried out in protected enviroment on the experimental area of the Hydraulics Section of the University of São Paulo (ESALQ/USP), Piracicaba, State of São Paulo, Brazil. The experimental design was randomized blocks. It were evaluated nine levels of salinity obtained with the addition of NaCl and these 1.8, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5, 10.5 dS m-1. The results obtained show that the increased levels of salinity caused a reduction in all parameters except the number of leaves was not affected and the ratio root/shoot was influenced incrementally. The salinity threshold was found to be 2.57 dS m-1, a reduction of 5.57% in production for each unit increase in salinity. The rocket press was classified as moderately sensitive to salinity. It is possible to obtain satisfactory production using saline water for hydroponic cultivation rocket press.
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Despeyroux, Dubrana Marie-Christine. "Erica Jong : Fanny et le roman anglais au XVIIIème siècle." Paris 4, 1993. http://www.theses.fr/1993PA040175.
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Fanny est une œuvre majeure de la romancière américaine Erica Jong, laquelle a voulu écrire un roman dans le style du roman anglais du 18eme siècle, une épopée héroï-comique. Parfaitement documentée sur l'époque, maitrisant la technique d'auteurs comme Defoe, Fielding ou Cleland, elle tente de saisir l'esprit du 18eme siècle. Si elle relate la vie, les mœurs, les idées, la morale de l'époque, Erica Jong décrit une héroïne Fanny laquelle, si elle évoque Tom Jones, Fanny Hill, Moll Flanders ou Roxana, est très proche d’Isadora, son héroïne fétiche, son alter ego. Elle transcende naturellement le processus d'imitation concernant le style, l'évolution du personnage, attribuant à son héroïne une personnalité riche, complexe et moderne. Plus évoluée que les héroïnes du passé, intellectuelle, sensuelle, féminine, féministe et non-conformiste, Fanny bénéficie, outre de ses rencontres et de ses aventures nombreuses, variées et aléatoires, de la toute-puissance, de la psychologie et des préoccupations de la femme-auteur Erica Jong, ainsi que de l'évolution des idées à nos jours. Luttant contre les tabous, les préjugés et les inégalités, Fanny veut transmettre à sa fille Belinda, de naissance incestueuse, par le récit authentique de sa vie, le sens d'une éthique personnelle basée sur le goût de la culture et de la liberté pour acquérir la maitrise de son destin et l'épanouissement dans sa vie de femme, de mère, d'artiste. Voulant décrire toutes les facettes de la nature féminine dans un picaresque féminin, teinté d'humour, d'ironie, de sérieux, d'érotisme troublant et de satire personnelle, Erica Jong, qui cherche l'osmose entre l'art et la vie, décrit la complexité des origines et des influences du destin de la femme moderne, marquée par la dualité corps et esprit. S'investissant dans son personnage,. .<br>Fanny is a major work from the American novelist Erica Jong who wished to write a mock eighteenth-century novel. Very well informed about the period, mastering the technique of authors like Defoe, Fielding or Cleland, she tries to seize the mind of the period. If she relates the life, manners, ideas, and morality of the 18th century, Erica Jong describes an heroine, Fanny, who, if she evokes Tom Jones, Fanny Hill, Moll Flanders or Roxana, is very similar to Isadora, her favorite heroine, her alter ego. She naturally transcends the imitation process concerning the style, the evolution of the heroine, giving her character a rich, complex and modern personality. More advanced than the heroines of the past, intellectual, sensual, feminist, feminine, nonconformist, fanny benefits, apart from her various encounters and numerous and perilous adventures, from the whole power, the psychological experience and the concerns of the woman writer Erica Jong. Rebelling against taboos, prejudices and inequalities, Fanny wishes to pass on, with the true account of her life, to her daughter Belinda, born of incest, the sense of personal ethics based upon a taste for culture and freedom to acquire mastery over her fate and blooming in her life as a woman, a mother, an artist. Aiming to describe the characteristics of feminine nature in a female picaresque, marked with humor, irony, seriousness, eroticism and personal satire, Erica Jong, looking for osmosis between art and life, describes the complexity of the origins and influences of modern woman's fate who is marked by the duality head and body. Investing herself in fanny, she personally authenticates the. .
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Cuzieux, Fabrice. "Modélisation des interactions aérodynamiques pour un convertible de type ERICA." Aix-Marseille 2, 2007. http://theses.univ-amu.fr.lama.univ-amu.fr/2007AIX22074.pdf.
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Le tiltrotor est un appareil combinant l’aptitude au décollage vertical et la possibilité d’effectuer des vols aux grandes vitesses comparables à celles des avions à turbopropulseur. Ceci offre de nouvelles possibilités dans un contexte aéroportuaire actuellement surchargé. Pour cela, le tiltrotor possède deux rotors montés sur des nacelles pivotables placés au bout d’une aile. Ceci engendre des interactions fortes entre les sillages des rotors et l’aile aux basses vitesses. Il en résulte une force sur l’aile appelée déportance et qui affecte les performances de l’appareil. Afin de réduire la déportance, AGUSTA a proposé le concept ERICA, dont les parties d’aile placées au-dessous des rotors peuvent se basculer. Un autre type d’interaction existe à proximité du sol, où les sillages rotors engendrent un effet fontaine de sol qui vient impacter le dessous de l’appareil. Ces deux phénomènes d’interaction ont été modélisés dans le code de mécanique du vol HOST d’Eurocopter, pour le concept ERICA. Un modèle de ligne portante non linéaire a donc été développé pour le HOST, qui ne disposait pas jusque là de modèle physique de l’aile. Des calculs aux fortes incidences, comme dans le cas de l’aile du tiltrotor en interaction avec les sillages rotors, peuvent désormais être menés. Le modèle évaluant l’interaction entre le sillage des rotors et l’aile est basé sur une représentation quasi-statique des sillages à l’aide de cylindres. Ce modèle permet de calculer le pourcentage de corde d’aile intersecté par le sillage des rotors pour chaque section de la ligne portante, afin d’évaluer l’influence des vitesses induites par les rotors. Pour l’effet de sol sur l’aile, une approche basée sur l’équation de continuité de masse, initialement proposé par H. Haverdings, a été employée, ainsi qu’une seconde approche basée sur l’impact de deux jets circulaires sur une plaque a été développé. Tout ces modèles sont maintenant disponibles dans une version de développement du HOST. Ainsi, une évaluation des performances dans les différentes phases de vol du concept ERICA est désormais possible. Par exemple, une étude approfondie de l’influence du braquage des ailes mobiles sur la puissance requise en vol a permis d’établir et de valider l’efficacité de différentes stratégies<br>Among solutions studied to decrease airport congestion due to the air traffic increase, the use of civil tiltrotors is an interesting solution. A tiltrotor has the distinctive feature of being able to mix Vertical or Short Take-Off and Landing capabilities with cruise flight at speeds comparable to turboprop aeroplanes. This tiltrotor configuration has two rotors at the tip of the wing, and as a result, strong rotors wake/wing interaction occur in low speed conditions producing a wing download force that affect the aircraft performance. In order to reduce this download the ERICA concept has been proposed by AGUSTA. The wing parts located below the rotors can be tilted and adjusted to the rotor downwash direction in order to decrease the wing download. A second interaction exists when close to the ground, as a ground fountain effect, due to the rotor’s wakes, affects the wing, fuselage and tail loads. These two interaction phenomena have been studied for the ERICA concept within the Eurocopter HOST code. A non-linear lifting line model has based developed for the HOST. Calculation under high angle conditions, such as for a tilt-rotor wing in interaction with the rotor wake, can then be performed. The modelling used to evaluate the interaction between the rotor wake and the wing is based on a quasi-steady representation of the wakes with cylinders. This model allows computing the percentage of wing chord intercepted by the rotor wake for each section of the lifting line. This percentage is used to balance the influence of the rotor-induced velocity. For the ground effect on the wing, an approach based on mass continuity equation has been used first proposed by H. Haverdings, and also a second approach based on impinging jets modelling. All of these modelling concepts are now in use in a development version of the HOST. Thus, it helps for the evaluation of flight performances of the ERICA tiltrotor concept, such as the prediction of the efficiency of different tilt-wing angle strategies that can be used in order to minimise the total power requirement
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Mitrani, Leila Mical. "Certain syndrome or complex conundrum? : the pollination of Erica lanuginosa." Bachelor's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/26380.
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The flower of Erica lanuginosa has a tightly closed corolla, held in place by hinged sepals. with a dull reddish-pink colour which makes make it hard to determine a likely pollinator. Rodent trapping and pollen analysis of faecal matter showed it unlikely to be pollinated by a rodent. Flowers excluded from external pollination showed no seed set, hence it is not considered to be self-pollinated. Nectar analysis are inconclusive as an indicator of pollination syndrome. Entomophily by a robust insect with a medium length proboscis is considered unlikely due to phenology and morphology of the flower. Omothiphily is a possibility as stem thickness correlates with previous studies investigating the correlation between stem thickness and pollination syndromes. The pollination syndrome of Erica lanuginosa remains indeterminate by I hypothesize that, due to phenology, thick supportive, stem and large quantities of nectar and close-formed flower, which needs to be manoeuvred open, its pollinator is likely a short-billed generalist-feeding bird restricted by food choice during the winter months.
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Lester, Ntsikelelo Blessings. "Preliminary investigations into the phylogenetic relationships in the genus Erica L." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/17376.
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Thesis (MSc)--University of Stellenbosch, 2006.<br>ENGLISH ABSTRACT: Erica is a genus of about 860 species world wide, with 700 of these found in South Africa’s
southwestern and southern Cape, making it by far the most speciose genus in the Cape Floristic
Region. This poses a particular challenge in the construction of a molecular phylogeny of the
genus. The choice of suitably variable gene regions is a crucial decision on which the successful
phylogenetic reconstruction of this important genus is critically dependent.
The aim of this project was therefore to determine which DNA regions, both chloroplast and
nuclear, would be sufficiently variable to give adequate informative characters that may be useful
at the species level phylogenetic reconstruction. A subset of 30 species, representing the range of
morphological diversity and pollinator preference within Erica, was selected for study. For each of
these species the variability in eight chloroplast regions (trnL-F, matK, trnS-G, rps12- rpl20, psbAtrnH,
trnC-D, rps4-trnT and trnT-L) and the nuclear ITS region was investigated.
The psbA-trnH, trnC-D, rps4-trnT and trnT-L chloroplast regions were found to be problematic to
amplify and to possess too few Parsimony Informative Characters to be of use in phylogenetic
reconstruction. Four of the chloroplast regions, trnS-G, trnL-F, matK and rpS12-rpL20 and the
nuclear ITS region could be amplified and sequenced with success. The ITS region was found to
be reasonably variable, with the chloroplast genes showing less variability.
The DNA extraction method employed showed itself to be of critical importance in the success of
the study. Two DNA extraction protocols, both modified from the original Doyle and Doyle (1987)
method, were tested. The one included double the amount of β-mercaptoethanol and
Polyvinylpyrrolidone (PVP) and the other included an extended phenol: chloroform: isoamylalcohol
step. These variables, together with the effectiveness of these methods on fresh vs. silica dried
plant samples, were investigated to determine which of the two would yield high quantities and
qualities of DNA and result in the best method for the extraction of DNA from Erica species.<br>AFRIKAANSE OPSOMMING: Erica is ‘n genus van omtrent 860 spesies wêreldwyd, met 700 van hierdie spesies aanwesig in die
suidwes en suid Kaap van Suid Afrika, wat dit by verre die mees spesieryke genus in die Kaapse
Floristiese Streek maak. Dit stel ’n besondere uitdaging in die konstruksie van ’n molekulêre
filogenie van die genus. Die keuse van geskikte variërende geen-areas is ‘n belangrike besluit
waarvan die suksesvolle filogenetiese rekonstruksie van hierdie belangrike genus krities afhanklik
sal wees.
Die doel van hierdie projek was dus om te bepaal watter DNS areas, buide chloroplas en kern,
genoegsaam varieer om voldoende informatiewe kenmerke te lewer om bruikbaar te wees in ’n
spesie-vlak molekulêre rekonstruksie. ’n Subgroep van 30 spesies, wat die reeks van morfologiese
diversiteit en bestuiwer voorkeure in Erica verteenwoordig, is dus vir die studie geselekteer. Vir elk
van hierdie spesies is die variasie in agt chloroplast areas (trnL-F, matK, trnS-G, rps12- rpl20,
psbA-trnH, trnC-D, rps4-trnT en trnT-L) en die kern ITS area ondersoek.
Dit was problematies om die psbA-trnH, trnC-D, rps4-trnT en trnT-L chloroplast areas te
amplifiseer, en daar is gevind dat hulle te min Parsimonie Informatiewe Kenmerke besig om
bruikbaar te wees in filogenetiese rekonstruksie. Vier van die chloroplas areas, trnS-G, trnL-F,
matK en rpS12-rpL20 en die kern ITS kon suksesvol geamplifiseer word en die basisvolgordes kon
suksesvol bepaal word. Daar is gevind dat die ITS area redelik variërend is, terwyl chloroplas
areas minder variasie getoon het.
Die DNS ekstraksie metode wat gebruik is het die kritiese belang van die ekstraksie metode in die
sukses van die studie bewys. Twee DNS protokolle, beide gemodifiseer van die oorspronklike
Doyle en Doyle (1987) metode, is getoets. Die een het dubbel die hoeveelheid β-mercaptoetanol
en Polyvinylpyrrolidone (PVP) bevat, en die het ’n uitgebruide fenol: chloroform: isoamylalkohol
stap ingesluit. Hierdie veranderlikes, saam met die effektiwiteit van hierdie metodes op vars
teenoor silika-gedroogde plant monsters, is ondersoek om vas te stel watter een van die twee die
hoogste kwaliteit en kwantiteit DNS sou lewer en dus sal lei tot die beste DNS ekstraksie metode
vir Erica spesies.
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Trinder-Smith, Terry H. "Pollen morphology in relation to pollination syndromes and sections in Erica." Thesis, University of Cape Town, 1990. http://hdl.handle.net/11427/26021.
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Arendse, Brittany. "Variation in breeding systems and consequences for reproductive traits in Erica." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/15494.
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Includes bibliographical references<br>Erica makes up 7% of all species in the Cape flora. It is the most species-rich genus in the Cape Floristic Region (CFR), which has an area 0f 90 000km². Erica species have great inter- and intra-specific variation in floral form as well as in post-fire regeneration strategies. Previous studies of other plant groups (Barrett et al. 1996; Button et al. 2012) have illustrated changes in floral traits with a shift from outcrossing to selfing. The aim of this thesis was to determine whether similar changes occur in Erica. I thus analysed breeding systems in Erica in relation to floral traits, pollinators, and fire survivals strategies. Seed and fruit set data obtained from hand-pollination treatments suggested that self- fertilization occurs rarely. Autonomous selfing did not generally yield significant seed set. When comparing changes in floral traits with increased selfing ability and pollination syndromes weak relationships were observed. Average plant height showed a positive relationship with selfing ability but this correlation was not significant. Comparing traits within small and large flowered species separately yielded significant relationships between corolla size and selfing ability of small-flowered species.. Furthermore, general trends indicate that small-flowered species have increased ability to self-fertilise when corolla sizes are larger, corolla apertures larger and herkogamy reduced. Large-flowered species employ the same strategy but average corolla aperture is reduced. A trade-off between the size and the number of flowers was seen within the Erica genus. Small-flowered species had significantly more flowers compared to larger- flowered species that had markedly fewer flowers per unit height. This finding has implications for the selfing potential of small-flowered species as increased self- incompatibility may have evolved in order to reduce the effects of increased geitonogamy due to increased floral number. The prediction that self-fertilisation would be increased in seeders compared to resprouters, on the basis that seeders are more reliant on seeds for persistence than resprouters, was not realised when comparing the selfing ability of different fire- survival strategies. Erica mammosa, a species with morphs possessing both fire-survival strategies, shows no significant differences in selfing ability, this includes differences in pollen-ovule (P/O) ratios. However, indices suggest the resprouting form of E. mammosa to have an increased ability to self-fertilize while the seeder form has an increased ability for autonomous selfing. The 29 species analysed were divided into outcrossers and facultative outcrossers based on selfing indices but these did not fit neatly within Cruden’s proposed P/O ranges (facultative autogamy: P/Os= 32-397; facultative outcrossers: P/Os= 160.7 - 2258.6; outcrossers: P/Os= 1062 - 19525). This may be due to his classification of species into breeding systems being based on relatively few distantly related species per category with extremely variable P/O ratios per category. For example, outcrossers ranged an order of magnitude (from 1000+ to 20 000). It is also true that this ratio can be influenced by a variety of different factors, these include: habitat, evolutionary history and pollination syndrome. Consequently, P/O ratios in Erica do not seem to reflect pollination syndromes very well. Presumably, sex allocation theory may explain the relationship of breeding system with P/O ratios better. Histological studies of pollen tube growth for self- and cross-pollinated flowers of eight species suggested that Erica has late acting self-incompatibility (LSI). LSI is a barrier to selfing that occurs in the ovary. However, I could not determine if the rejection process occurs pre- or post-fertilization. Although, a large amount of knowledge is still lacking, this preliminary study provided insight into the reproductive biology of Erica.
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Girardin, Pierre-Yves. "Mechanical conception of the ERICA (ERA Iron bird CLU hArdware simulator)." Thesis, KTH, Farkost och flyg, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-211168.
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Sending a man in space is extremely dangerous. In order to continue the space exploration, robots have to be used. Designed properly, robots can handle any kind of operations in deep space. But in space there is no support such as an after-sale service. That is why their conception must be as perfect as possible to satisfy many tests. This is also the case of the ERA (European Robotic Arm). Its operations must be tested on the ground. But since forces acting at ground level are different than in space (e.g. gravity), the ERA must be in such position (the Iron Bird project) so that the target that it wants to reach must be brought by another robot. This other robot is called ERICA (Era Iron-bird CLU hArdware simulation). The goal of this project is to make the mechanical conception of the ERICA. The project was carried out in four parts. The first consisted in gathering information about the ERA in order to establish the requirements. The second was a pre-conception part. The third consists in explaining the research that had been made to choose the proper design of the ERICA. In the fourth part, the mechanical and electrical conception is presented. The ERICA is a gantry system where the payload is a gimbal holding a target. That way, the 6 degrees of freedoms of the ERA are achieved. The gantry system is provided by LinMotion and the motors by Maxon. The electronic parts are attached to the gantry at different places. A frame surrounds the working envelope so that the CLU (Camera and Lightning Units) can be fixed on it as well as protective plates against the CLU’s laser.
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Fidalgo, Andreia Filipa Brito. "Exposição e acumulação de elementos potencialmente tóxicos em rúcula (Eruca sativa)." Master's thesis, ISA, 2014. http://hdl.handle.net/10400.5/6786.
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Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia<br>In this project the effects of the exposure of rocket (Eruca sativa) to potentially toxic elements (PTE) was analysed. The effects of NaCl were also analysed, with particular interest in its accumulation and its effect in plant growth and development. Different growth parameters were studied such as biomass, dry matter and chlorophyll contents (Hansatech) and mineral composition.
The samples were exposed to solutions containing Cd, Cu, As and NaCl during 39 days. It was verified that the plants biomass did not change significantly with time when PTEs and NaCl were applied to them. The content of dry matter, however, showed an increasing trend throughout the experiments when exposed to the same components. Additionally, it was observed a significant decrease in the chlorophyll content, evidenced by the manifestation of chlorosis, mainly in the samples contaminated with Cu.
It was observed an accumulation of PTEs in the edible part of the control samples. After 41 days, the contamination levels were higher than the ones established by law for horticulture products, especially for Cd and As. Regarding the samples contaminated with Cu and taking into account that Cu is an essential element to all organisms, it was shown that its concentration also exceeded the limits permitted by law after 41 days of exposure.
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Orellana, González Manuel Alejandro. "Efecto de distintos sanitizantes sobre la carga microbiana y calidad funcional en rúcula (Eruca Sativa Mill.) almacenada bajo refrigeración." Tesis, Universidad de Chile, 2011. http://repositorio.uchile.cl/handle/2250/148806.
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Memoria para optar al Título Profesional de: Ingeniero Agrónomo<br>La industria de productos frescos cortados ha experimentado un crecimiento debido al
cambio de hábito alimenticio de los consumidores. Esto ha llevado a buscar nuevas
estrategias dentro del procesamiento de los alimentos, lo que ha llevado a investigar
alternativas al uso del hipoclorito de sodio, debido a que genera residuos tóxicos, por lo
que se busca alternativas más amigables con el ser humano y con el medio ambiente.
El objetivo de este trabajo fue evaluar el efecto de tres sanitizantes alternativos al
hipoclorito de sodio frente a los atributos organolépticos, calidad funcional y carga
microbiana en rúcula almacenadas a 5º C. Se realizaron dos ensayos en los cuales se
emplearon los siguientes tratamientos sanitizantes con sus respectivas dosis: dióxido de
cloro (5 mg/L), clorito de sodio acidificado (500 mg/L) y ácido peroxiacético (50
mg/L). Posterior al lavado de las hojas de rucúla con los sanitizantes, las hojas fueron
envasadas en atmósfera modificada pasiva, y se almacenaron a 5 ºC durante 12 días. Se
midieron parámetros de respiración, color, concentración de gases en las bolsas, análisis
microbiológico y análisis sensorial.
El hipoclorito de sodio (100 mg/L) sigue siendo un sanitizante efectivo en disminuir las
poblaciones microbianas, manteniendo una buena calidad sensorial. Por su parte el
clorito de sodio acidificado (500 mg/L) resultó ser una opción eficaz en la reducción y
control de aerobios mesófilos, enterobacterias y psicrófilos, sin embargo afectó de
forma negativa la calidad sensorial. El dióxido de cloro (5 mg/L) no fue efectivo en la
reducción de la carga microbiana ni en la mantención de la calidad sensorial de hojas de
rucúla. El ácido peroxiacético (50 mg/L) no resultó ser eficiente en la reducción de los
microorganismos, no obstante es aquel que preservó de mejor forma la calidad sensorial
de las hojas de rucúlas. La evolución del color verde en las hojas de rucúla tendió a
disminuir en el tiempo en todos los tratamientos observándose un incremento del color
amarillo en todos los tratamientos realizados. El uso de atmósfera modificada pasiva
(AMP) fue efectivo para reducir la carga microbiológica y mantener la calidad sensorial
en hojas de rucúla.<br>Fresh cut products industry has grown due to the change in the habits of consumer. This
has led them to look for new strategies in the process of food, and to investigate
alternatives in the use of sodium hypochlorite, because it produces a toxic substance,
that is why they seek more friendly alternatives to human beings and the environment.
The objective of this work was to evaluate the effect of three alternative sanitizers to
sodium hipochlorite on sensory quality, functional quality, and microbial load in rocket
leaves stored to 5ºC. Two trials were done in which they use the following sanitizers
treatments with their respective doses: Chlorine dioxide (5mg/L), acidified sodium
chlorite (500 mg/L) and peroxyacetic acid (50 mg/L). After washing the rocket leaves
were packed in a passive modified atmosphere and stored at 5ºC during 12 days.
Respiratory rate, gas concentration inside the bags, color and sensory change and
microbial load were evaluated.
Sodium hypochlorite (100mg/L) is still an effective sanitizers in reducing the microbial
population, keeping a good sensory quality. Acidified sodium chlorite (500 mg/L)
proved to be an effective option in to reduce aerobic mesophiles, enterobacterias and
psychrophiles, however decreases the sensory quality. Chlorine dioxide (5mg/L) did not
affect the microbial growth and sensory attributes of the rocket leaves. Peroxyacetic
acid (50 mg/L) did not prove effective in reducing microorganisms; nevertheless, is one
that best preserved the sensory quality of the rocket leaves. The green color reduced in
all treatments and observed an increase in the yellowing color in all treatments. The use
of the passive modified atmosphere (MAP) was effective to reduced the microbial
growth and keep sensory quality of rocket leaves stored.
38
Baker, Frank W. "The effect of latent heat release on the ERICA IOP-5 cyclone." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/28140.
Full text
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Miller, Ronald J. "An Investigation of the ERICA IOP-2 Cyclone Using the NORAPS Model." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA237683.
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Thesis (M.S. in Meteorology)--Naval Postgraduate School, June 1990.<br>Thesis Advisor(s): Wash, Carlyle H. Second Reader: Nuss, Wendell L. "June 1990." Description based on title screen as viewed on October 19, 2009. DTIC Indicator(s): Weather forecasting, computerized simulation, cyclogenesis, ERICA (Experiment on Rapidly Intensifying Cycloner over the Atlantic), NORAPS (Naval Operational Regional Atmospheric Prediction System), Theses. Author(s) subject terms: Rapid cyclogenesis, ERICA, NORAPS. Includes bibliographical references (p. 77-79). Also available in print.
40
Weilemann, Erica [Verfasser], and Stefan [Akademischer Betreuer] Wagner. "The influence of personality on software quality / Erica Weilemann ; Betreuer: Stefan Wagner." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2020. http://d-nb.info/1234452855/34.
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Lemardeley-Cunci, Marie-Christine. "Trois femmes étude simultanée de poésie américaine, 1960-1980 : Adrienne Rich, Erica Jong, May Swenson /." Lille 3 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376152083.
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Freitas, Karidja Kalliany Carlos de. "Espaçamentos e épocas de plantio no desempenho produtivo da rúcula." Universidade Federal Rural do Semi-Árido, 2006. http://bdtd.ufersa.edu.br:80/tede/handle/tede/68.
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Previous issue date: 2006-02-14<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Two experiments were carried out in the vegetable garden of Plant Science Department at Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró-RN, to evaluate the
influence of different spacings between and within rows and planting times on rocket yield performance. The first experiment was conducted from June to August of 2005 and the second one from September to October of 2005. The experimental design used was of randomized complete blocks in a 3 x 4 factorial scheme with four replications. The treatments of the factorial consisted of the combination of three between row spacings (20, 25 and 30cm)
with four within row spacings (5, 6, 7 and 10cm). The rocket cultivar grown was the Cultivada . Evaluations for plant height, number of leaves per plant, shoot dry mass, and green mass yield were made in the rocket. Economics indicators such as gross and net incomes, rate of return and profit margin were determined. There was a significant interaction between planting times and between row spacings and between planting times and within row spacings on shoot dry mass and green mass yield. On the other hand, it was not observed a significant interaction between within row spacings and between row spacings for any evaluated trait in the regrowth. The best agronomic performances of rocket were observed in the second planting time and in the regrowth, and in the spacings of 25cm x 6cm and 20cm x 5cm, respectively. The highest economic indicators were also observed in the second planting time and in the regrowth, and in the spacings of 25cm x 6cm and 20cm x 5cm, respectively. The rocket green mass yield was about 78% higher in the regrowth as compared with those of the first growing<br>Dois experimentos foram conduzidos na horta do Departamento de Ciências Vegetais da Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró-RN, com o objetivo de
avaliar a influência de diferentes espaçamentos entre e dentre fileiras em duas épocas de plantio no desempenho produtivo da rúcula. O primeiro experimento foi conduzido no
período de junho a agosto de 2005 e o segundo no período de setembro a outubro de 2005. O delineamento experimental foi o de blocos casualizados completos em esquema fatorial 3 x 4,
com quatro repetições. Os tratamentos do fatorial consistiram da combinação de três espaçamentos entre fileiras (20, 25 e 30cm) e quatro espaçamentos dentre fileiras (5, 6, 7 e 10cm). A cultivar de rúcula utilizada foi a Cultivada. As características avaliadas foram: altura de plantas, número de folhas por planta, massa seca da parte aérea e rendimento de
massa verde. Também foram utilizados alguns indicadores econômicos como: renda bruta, renda líquida, taxa de retorno e índice de lucratividade. Houve interação significativa entre
épocas de plantio e espaçamentos entre fileiras e entre épocas de plantio e espaçamentosdentre fileiras na massa seca da parte aérea e no rendimento de massa verde. Por outro lado, não se observou interação significativa entre espaçamentos entre fileiras e espaçamentos dentre fileiras em nenhuma das características avaliadas na rebrota da rúcula. As melhores performances agronômicas da rúcula foram observadas na segunda época de plantio e na rebrota, nos espaçamentos de 25cm x 6cm e 20cm x 5cm, respectivamente. As maiores eficiências econômicas foram observadas também na segunda época de plantio e na rebrota,
nos espaçamentos de 25cm x 6cm e 20cm x 5cm, respectivamente. O rendimento de massa verde da rúcula na rebrota foi 78% superior ao do primeiro cultivo
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Freitas, Bruna Vieira de. "Resposta agroeconômica da produção de rúcula adubada com húmus de minhoca sucedida pelo cultivo de rabanete." Universidade Federal Rural do Semi-Árido, 2017. http://bdtd.ufersa.edu.br:80/tede/handle/tede/754.
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Previous issue date: 2017-02-23<br>Organic agriculture aims to promote the conservation of the environment in the absence of chemical fertilizers and/or agrochemicals. Among the fertilizers used in organic agriculture there is the vermicomposting, rich in organic matter, which replaces the physical and biological structure of the soil that neutralizes the pH, besides increasing the resistance of plants against pests and diseases. The objective of this paper was to evaluate the production of arugula in function of sources and amounts of humus, earthworm and, subsequently, the production of radish in succession to the cultivation of arugula. Two experiments were conducted at the Experimental Farm Rafael Fernandes, belonging to the Universidade Federal Rural do Semi-Árido (UFERSA), located in the district of Lagoinha. The experimental design was a randomized complete block design with four replications, with treatments arranged in a 2 x 5 factorial scheme. The first factor was composed of two sources of humus (bovine and goat manure) and the second factor of five humus quantities (50, 100, 150, 200 and 250% of N) incorporated in the soil. The cultivars of arugula used was the “Cultivada” and as for the radish was the “Crimson Gigante”. The characteristics evaluated in the arugula were: plant height, number of leaves per plant and productivity of green and dry mass of the shoot. As for the radish were: plant height, stem diameter, number of leaves per plant, total, commercial and root rots productivity, fresh and dry mass of the shoot and dry mass of roots. The economic indicators were also evaluated: gross income, net income, rate of return and profitability index. There were no significant interaction between the sources and amounts of humus studied for any of the characteristics evaluated in the arugula and radish. The highest agro-economic efficiency of arugula and radish was obtained for 250% of N. As pertaining to the agro-economy, both of the sources of earthworm humus can be used. Earthworm humus is economically viable for the production of organic vegetables<br>A agricultura orgânica visa promover a conservação do meio ambiente na ausência de fertilizantes químicos e/ou agrotóxicos. Dentre os adubos utilizados na agricultura orgânica está o vermicomposto, rico em matéria orgânica, reconstituinte da estrutura física e biológica do solo que neutraliza o pH, além de aumentar a resistência das plantas contra pragas e doenças. Diante disso, este trabalho teve como objetivo avaliar a produção de rúcula em função de fontes e quantidades de húmus de minhoca, e, posteriormente, a produção de rabanete em sucessão ao cultivo da rúcula. Dois experimentos foram desenvolvidos na Fazenda Experimental Rafael Fernandes, pertencente à Universidade Federal Rural do Semi-Árido (UFERSA), localizada no distrito de Lagoinha. O delineamento experimental usado foi o de blocos completos casualizados com quatro repetições, com os tratamentos arranjados em esquema fatorial 2 x 5. O primeiro fator foi constituído de duas fontes de húmus (à base de esterco bovino e caprino) e o segundo fator de cinco quantidades de húmus incorporadas ao solo (50, 100, 150, 200 e 250% de N). A cultivar de rúcula utilizada foi a “Cultivada” e a de rabanete a “Crimson Gigante”. As características avaliadas na rúcula foram: altura de plantas, número de folhas por planta e rendimento de massa verde e seca da parte aérea. No rabanete foram: altura de plantas, diâmetro de raízes, número de folhas por plantas, produtividade total, comercial e de raízes refugo, massa fresca e seca da parte aérea e massa seca de raízes. Também foram avaliados os indicadores econômicos: renda bruta, renda líquida, taxa de retorno e índice de lucratividade. Não se observou interação significativa entre as fontes e quantidades de húmus estudadas para nenhuma das características avaliadas na rúcula e no rabanete. A maior eficiência agroeconômica da rúcula e do rabanete foi obtida na quantidade de 250% de N. Agroeconomicamente pode-se usar ambas as fontes de húmus de minhoca. O húmus de minhoca é economicamente viável para a produção de hortaliças orgânicas<br>2017-07-10
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Cataldo, Edmund F. "Evaluation of the SSMI rain analyses for selective storms in the ERICA project." Thesis, Monterey, California: Naval Postgraduate School, 1990. http://hdl.handle.net/10945/34880.
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Approved for public release; distribution unlimited.<br>Evaluation of the SSMI HAC precipitation algorithm is presented. SSMI rain rate data from five passes during ERICA IOP 2 and 3 were compared to all available ship observations, dropwinsonde soundings and coastal radar. Four different techniques were applied to the seven SSMI channels to analyze rain rate. They are: SSMI HAC algorithm, the Tb(19H) GHz channel with a threshold of 160 deg K, the Tb(37H) GHz channel with a threshold of 190 K, and the Tb(37V- 37H) image with a threshold of less than a 30 deg K difference. For the two IOP 2 passes the Spencer et al (1989) Polarized Correction Temperature (PCT) algorithm using the two 85 GHz channels were also studied. There is considerable uncertainty in the interpretation of the SSMI HAC rain rate algorithm. Specifically large areas of out-of-limit values are present in the vicinity of mid-latitude winter cyclones. Study of the SSMI HAC rain rate has indicated the out-of-limit areas occur when the rain flag is triggered, but the calculated rain rate from the HAC algorithm is less than zero. From this study it is obvious that the four channel SSMI HAC regression algorithm, in its current form, can not satisfactorily analyze the precipitation. Further study is needed to determine if a regression equation can be used to estimate precipitation areas, particularly those with light precipitation. Treating the out-of-limits values as light precipitation would dramatically improve the quality of the SSM I HAC analysis. However, if a regression equation can not be used to estimate precipitation, using the Tb(37H) channel for a better overall analysis of light precipitation and showers and the Tb(19H) channel for a better analysis of the moderate to heavy precipitation is a viable solution.
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Ronca, Débora Barbosa. "Estudo de risco cardiovascular em adolescentes (ERICA) : análise da qualidade global da dieta." reponame:Repositório Institucional da UnB, 2017. http://repositorio.unb.br/handle/10482/31720.
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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ciências da Saúde, Departamento de Nutrição, Programa de Pós-Graduação em Nutrição Humana, 2017.<br>Submitted by Raquel Almeida (raquel.df13@gmail.com) on 2018-04-09T17:26:22Z
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Previous issue date: 2018-04-24<br>Introdução: A avaliação do consumo alimentar de adolescentes é essencial para o monitoramento dos padrões alimentares desta população. Nova abordagem vem sendo adotada, na qual o efeito global da dieta na saúde do indivíduo é investigado ao invés de alimentos e nutrientes isoladamente. O objetivo do estudo foi avaliar o padrão dietético de adolescentes escolares brasileiros, a partir de um índice de qualidade da dieta baseado exclusivamente em alimentos e ainda avaliar a adesão desta população às diretrizes nutricionais internacionais vigentes. Métodos: Estudo transversal multicêntrico de base escolar, conduzido de 2013 a 2014. A amostra foi composta por 71.553 adolescentes de 12 a 17 anos, de escolas públicas e privadas, de municípios brasileiros com mais de 100 mil habitantes, participantes do Estudo de Riscos Cardiovasculares em Adolescentes (ERICA). O consumo alimentar foi avaliado a partir de recordatório alimentar de 24 horas. O método National Cancer Institute method foi usado para estimar o consumo dietético usual dos dez grupos alimentares considerados. Estas estimativas permitiram o cálculo do Índice de Qualidade da Dieta para Adolescentes adaptado ao Brasil (IQDABR) e de seus três componentes: qualidade, diversidade e equilíbrio. O escore final corresponde à média dos seus componentes, varia de -33% a 100% e pontuações mais altas indicam melhor qualidade da dieta. A distribuição do IQDA-BR foi analisada segundo sexo, região geográfica e rede da escola e as análises foram conduzidas considerando a complexidade amostral, nos softwares STATA e SAS. Resultados: O escore médio do IQDA-BR foi de 14,8% (±6,1%) para meninas e 19,0% (±6,3%) para meninos. Os três componentes apresentaram pontuação média inferior a 50%, em ambos os sexos. O equilíbrio foi o componente que mais contribuiu para a nota final das meninas e a diversidade, para os meninos. Escores muito baixos de qualidade foram observados em todos estratos analisados e indicam escolhas inadequadas nos grupos alimentares. As medianas de consumo usual dos grupos dos vegetais, frutas, leites e queijos estavam abaixo das recomendações diárias, enquanto no grupo das carnes, peixe e ovos e no grupo de alimentos não recomendados apontam um consumo excessivo. Os maiores e menores escores médios do IQDA-BR foram encontrados nas regiões Norte e Centro-Oeste, respectivamente (17.0% vs. 12.4% para meninas; 20.7% vs. 16.8% para meninos). As menores medianas de consumo usual do grupo dos feijões foram observadas nas escolas privadas (92,7g para meninas e 146g para meninos). Ambas as redes de ensino apresentaram consumo mediano usual relativamente similar dos grupos de alimentos não recomendados (~85g de snacks e ~600ml de bebidas de baixo valor nutritivo). Conclusão: Observou-se baixa adesão às diretrizes dietéticas internacionais e a qualidade global da dieta dos adolescentes brasileiros precisa de melhorias urgentes, em todas as regiões e níveis socioeconômicos do País. Palavras-chave: Qualidade da dieta; Índice de Qualidade da Dieta; Padrões Alimentares, Adolescentes, Epidemiologia Nutricional.<br>Introduction: The assessment of dietary intake is crucial to identify and monitor dietary patterns of adolescents. Recent studies have shift to a global approach that focus on dietary patterns analyses rather than isolated nutrients or foods. The present study aimed to assess dietary patterns of adolescents by a food-based diet quality index, and to evaluate their compliance with international dietary guidelines. Methods: Participants included 71,553 Brazilian adolescents (12-17 years), enrolled in public and private schools of Brazilian municipalities with more than 100.000 inhabitants, from the Study of Cardiovascular Risks in Adolescents (ERICA). Sociodemographic characteristics were assessed by self-administered questionnaire. Dietary intake was assessed by 24-hour recall. The National Cancer Institute method was applied to estimate the usual dietary intake of food groups. These estimates were used to determine the Diet Quality Index for Adolescents adapted for Brazilians (DQIA-BR) and its components: dietary quality, diversity and equilibrium. The DQIA-BR total score range from -33% to 100% and is comprised as the mean of its three components, whereas higher scores indicates higher diet quality and a greater adherence to international guidelines. By using the software STATA and SAS, which considered the complexity of the sample, the DQIA-BR distribution was analyzed according to sex, geographical area and type of school. Results: The mean (SD) DQIABR scores were 14.8% (±6.1%) for female and 19.0% (±6.3%) for male. All analyzed strata revealed low scores of DQIA-BR and its components. All components values were even under half of their ideal scores. Dietary equilibrium and dietary diversity were the components that mostly contributed toward the total scores for females and males, respectively. All strata revealed negative dietary quality mean scores that indicate inadequate food choices within food groups. Additionally, medians usual intake were below recommendations for vegetables, fruits, milk products and cheese groups and also indicated over-consumption of meat, fish and eggs group and non-recommended food-groups. The highest and the lowest DQIA-BR mean scores were found at the North and the Midwest region, respectively (17.0% vs. 12.4% for females; 20.7% vs. 16.8% for males). The lowest beans group usual intakes were observed at private schools (92,7g for females and 146g for males). Both types of school showed relatively similar medians usual intake of unhealthy food groups (~85g of snacks and ~600ml of nonnutritive drinks). Conclusion: We conclude that the compliance with international dietary guidelines is inadequate and the overall diet quality of Brazilians adolescents needs urgent improvements, in all regions and socioeconomic backgrounds. Keywords: Diet quality, Diet Quality Index, Dietary indices, Dietary Patterns, Nutrition Assessment, Adolescents.
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Granja, Erika Maria Marcondes Tassi. "Caracterização quimica, atividade da lipoxigenase e biodisponibilidade de carotenoides da rucula (Eruca sativa)." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254475.
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Previous issue date: 2001<br>Resumo: Programas de prevenção à hipovitaminose A preconizam o consumo dos vegetais verdes folhosos, por serem fontes de carotenóides próvitamínicos A. Porém, alguns estudos questionam a eficácia desta conduta, alegando que a biodisponibilidade dos carotenóides das folhas é baixa demais para o combate à hipovitaminose. Como a rúcula (Eruca saliva) é um vegetal bastante consumido e, são poucas as informações sobre a sua composição, o presente trabalho teve como objetivo estudar o conteúdo de alguns nutrientes-chave da rúcula, e determinar a biodisponibilidade dos carotenóides nessa verdura folhosa, tanto crua como cozida, em relação ao 'beta'-caroteno sintético, através da dosagem destes nas lipoproteínas ricas em triacilgliceróis (LRT). No estudo sobre a composição determinou-se o teor de cinzas, proteína, lipídeos totais, carboidratos, fibras, ácidos graxos, além do conteúdo de a-tocoferol, carotenóides e atividade da enzima lipoxigenase no vegetal cru e cozido (5, 10 e 15 min a 97°C). Para estudar a biodisponibilidade, foi delineado o seguinte estudo: 10 mulheres adultas saudáveis, com o IMC de 18 a 20kg/m2, foram orientadas a consumir durante três dias dietas isentas de fontes de carotenóides. No quarto dia foi feita coleta de sangue em jejum (t=Oh) e, logo após, ingeriu-se refeição experimental constituída por rúcula crua (6,° umol de 'beta' caroteno) e 15g de gordura. Coletou-se sangue nos tempos de 2, 4 e 6 horas após a refeição ¿Observação: O resumo, na íntegra poderá ser visualizado no texto completo da tese digital.<br>Abstract: Hipovitaminosis-A prevention programs have recommended the routine consumption of green leafy vegetables for being good sources of
provitamin A. Some studies, however, question the efficacy of this practice
based on data indicating that carotenoid bioavailability from these sources
is much toe low to improve the vitamin A status of individuais in need. The
rocket (Eruca sativa) is a green leafy vegetable widely consumed in some
parts of Brazil, but until now there is little information regarding its
nutritional properties, except for its carotenoid composition, particularly
rich in lutein and 'beta'-carotene. The present work was designed to study the rocket leaf as a source of nutrients of lipid nature, namely a-tocopherol,
polyunsaturated fatty acids and carotenoids and estimate the relative
bioavailability of 'beta'-carotene and lutein to humans, both in the raw and in
the cooked state. The experiment consisted of determining the carotenoids
in the triacylglycerol-rich lipoproteins (TRL), the first stage after
absorption, in 10 adult, healthy women (18 <BMI<20kg/m2). The volunteers
were instructed to consume diets free of carotenoids for three days. Early
on the fourth day, a blood sample was drawn (fasted, t=Oh). Immediately
after, each volunteer ingested an experimental meal that consisting of
white bread, 15 9 of vegetable oil and the raw leaves (6.0 umol - 'beta'
carotene). Blood samples were drawn again at 2, 4 and 6 hours after the
meal ...Note: The complete abstract is available with the full electronic digital thesis or dissertations.<br>Doutorado<br>Doutor em Ciência da Nutrição
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JESUS, Cléoma Guimarães de. "Estresse salino em Rúcula (Eruca sativa mill) hidropônica: aspectos fisiológicos, bioquímicos e nutricionais." Universidade Federal Rural de Pernambuco, 2011. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5575.
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Previous issue date: 2011-02-18<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Salinity is one of the abiotic stresses that limit to growth and productivity of agricultural crops worldwide. Scientific studies show that conventional practices aimed at solving the problem of salinization is costly and inefficient and in most cases, not viable under the economic point of view. In this scenario, hydroponics can be an alternative to the use of saline water, besides being a practice conducive to soil conservation and preservation of water sources. To evaluate the performance of two varieties of broadleaf and Cultivated arugula they were subjected to different salinity levels of 0, 20, 40, 60, 80 and 100 mol.m-3 NaCl to the nutrient solution in hydroponic systems. Salinity negatively affected all physiological parameters of both cultivars, the rate of absolute and relative growth, dry weight and piece fresh root aera and height and, except for the total number of leaves that did not correlate with the salinity factor. The high levels of sodium and chloride in the shoots and roots of plants subjected to salt stress caused a significant reduction in potassium, calcium, magnesium, and phosphorus in both varieties. Salt stress caused a reduction in both total protein and increase the concentration of free proline. The increase of chlorophyll "a" and "b" with increasing levels of salinity reflects the activation of a defense mechanism against salt stress, in addition to increasing the activity of enzymes of antioxidant system, catalase and peroxidase ascorbate and polyphenol.<br>A salinidade é um dos estresses abióticos que mais limita o crescimento e a produtividade das culturas agrícolas em todo o mundo. Estudos científicos demonstram que práticas convencionais destinadas à solução do problema da salinização são onerosas e ineficientes e, na maioria das vezes, inviáveis sob o ponto de vista econômico. Nesse cenário, a hidroponia pode ser uma alternativa à utilização de águas salinas, além de ser uma prática favorável à conservação do solo e preservação dos mananciais de água. Para avaliar o desempenho de duas cultivares de rúcula Folha Larga e Cultivada estas foram submetidas a diferentes níveis de salinidade 0, 20, 40, 60, 80 e 100 mol.m-3 de NaCl na solução nutritiva, em sistema hidropônico. A salinidade influenciou negativamente todos os parâmetros fisiológicos de ambas as cultivares, como a taxa de crescimento absoluto e relativo, peso seco e fresco da parte aera e raiz e altura, com exceção do número total de folhas que não apresentou correlação com o fator salinidade. Os elevados teores de sódio e cloreto, na parte aérea e raízes, das plantas submetidas ao estresse salino provocaram uma redução significativa dos teores de potássio, cálcio, magnésio, e fósforo em ambas as variedades. O estresse salino provocou simultaneamente uma redução nos teores de proteína total e um aumento nos teores de prolina livre. O incremento do teor de clorofila “a‟ e “b” em função do aumento dos níveis de salinidade reflete a ativação de um mecanismo de defesa contra o estresse salino, além do incremento da atividade das enzimas do sistema antioxidante, como catalase e peroxidase do ascorbato e polifenoloxidase.
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BORGES, M. A. S. "DURAÇÃO DO SONO E O EXCESSO DE PESO EM ADOLESCENTES BRASILEIROS: ESTUDO ERICA." Universidade Federal do Espírito Santo, 2017. http://repositorio.ufes.br/handle/10/10123.
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Previous issue date: 2017-09-05<br>xx
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Lagos, Razeto María Carolina. "Aplicación de sanitizantes en hojas de rúcula (Eruca sativa) conservadas en atmósfera modificada." Tesis, Universidad de Chile, 2010. http://www.repositorio.uchile.cl/handle/2250/112376.
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Memoria para optar a título profesional de
Ingeniero Agrónomo
Mención Agroindustria<br>Las hojas de rúcula (Eruca vesicaria) se han introducido al mercado del mínimo proceso debido al gran interés por ensaladas listas para consumir. El hipoclorito de sodio, es el sanitizante utilizado en la industria de los alimentos por excelencia. Sin embargo, su uso está comenzando a ser cuestionado, ya que produce compuestos perjudiciales para la salud.
El objetivo de este trabajo, que estuvo formado por 2 ensayos, el primero en primavera y el segundo en verano, fue evaluar distintos sanitizantes como dióxido de cloro (DC 5 y 10 mg/L), clorito de sodio acidificado (CSA 250 y 500 mg/L), ácido peroxiacético (AP 50 y 90 mg/L) e hipoclorito de sodio (HS AMP 100 mg/L) en hojas de rúcula conservadas en bolsas plásticas bajo atmósfera modificada pasiva por 10 días a 5° C. Además, se utilizó hipoclorito de sodio (HS Bp 100 mg/L) en bolsas perforadas para evaluar el efecto de la atmósfera al interior de la bolsa. Luego se realizó un segundo ensayo, seleccionando los tratamientos que mostraron mejores resultados en los parámetros evaluados. Los parámetros evaluados fueron respiración, concentración de gases, color: L, Hab, C*; análisis microbiológico y evaluación sensorial. Se utilizó un diseño experimental completamente al azar con 3 repeticiones por tratamientos.
En ambos ensayos, el equilibrio en la concentración de gases se alcanzó entre los días 4 a 7. Se lograron altos niveles de CO2 (>5%) y bajos de O2 (<5%), retardando la senescencia, por lo que se mantuvo el color verde oscuro. Durante el almacenamiento, el color verde de las hojas tendió levemente al color amarillo. En el Ensayo I (primavera), CSA 500 fue el tratamiento que obtuvo menores recuentos de mesófilos, enterobacterias, y psicrófilos con 4,3, 4,7 y 3,1 log/UFC*g respectivamente, seguido por CSA 250 con 5,1, 5,2 y 3,2 log/UFC*g respectivamente. Para enterobacterias, pasado el día 4, todos los tratamientos excedían el límite legal (>3,7 log/UFC*g), exceptuando CSA 500. La calidad sensorial tendió a disminuir con el tiempo, sobre todo la apariencia, donde DC 10 fue el mejor evaluado con 9,4.
En el Ensayo II (verano), todos los tratamientos resultaron ser eficaces, por lo tanto, los sanitizantes utilizados sirven como alternativa al hipoclorito de sodio.<br>Rocket leaves (Eruca vesicaria), has been introduced in the minimally processed market due to the great interest in new ready to eat vegetables. Sodium hypochlorite is the most widely used sanitizer in minimally processing but its safety for human beings is being questioned.
The aim of this study, which was performed with 2 experiments, one in spring and the other in summer, was to evaluate the effect of different sanitizers, chlorine dioxide (DC 5 and 10 mg/L), acidified sodium chlorite (CSA 250 and 500 mg/L), peroxyacetic acid (AP 50 and 90 mg/L) and sodium hypochlorite (HS AMP 100 mg/L), in rocket leaves stored in plastic bags as passive modified atmosphere for 10 days at 5 °C. In addition, rocket leaves were immersed in sodium hypochlorite and packed in perforated bags (HS Bp 100 mg/L) to evaluate the atmosphere effect. A second experiment was performed selecting those effective treatments. Evaluated parameters were respiration, gas concentration inside the bags, color: L, Hab, C*; microbiological analysis, and sensory quality. A completely randomized design with three replicates per treatment was performed.
In both experiments, the steady gas concentration balance was achieved after 4 to 7 days, reaching high CO2 (>5%) levels and low O2 (<5%) levels, delaying senescence, so green color was kept. During the storage the green color of leaves were changing slightly to yellow. In the Spring experiment, CSA 500 had lower mesophilic, enterobacterias, and psychrophiles counts with 4.3, 4.7 and 3.1 log/UFC*g respectively, followed by CSA 250 with 5.1, 5.2 y 3.2 log/CFU*g respectively. For Enterobacterias, after 4 days, all treatments exceeded legal limit (>3.7 log/CFU*g), except CSA 500. The sensory quality tended to decline over time, especially appearance, where DC 10 was the best scored with 9.4.
In the 2nd experience all treatments were found effective, therefore, all sanitizers could be used as an alternative to sodium hypochlorite.
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Matsuzaki, Ricardo Toshiharu. "Quelatos de ferro afetam o crescimento e a produção de rúcula cultivada em sistema hidropônico." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-30102013-170714/.
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Foram conduzidos dois experimentos com o objetivo de avaliar a eficiência do uso de quelatos de ferro no cultivo hidropônico de rúcula em ambiente protegido. O delineamento experimental utilizado foi o inteiramente casualizado com 4 repetições e 6 tratamentos: Fe-IDHA (ácido D,L aspártico, N-(1,2 dicarboxietil) tetra sódico), Fe-EDTA (ácido etilenodiamino tetra acetic), Fe-ORGÂNICO (a base de aminoácidos), Fe-EDDHA (ácido etilenodiamino - di (o - hidroxifenil-acético o-o 4,8%) e Fe-HBED (ácido N, n`-Bis (2-Hidroxibenzil) N- etilenodiamina n`dipropiônico) e testemunha (sem adição de ferro). O primeiro experimento foi conduzido no período de 8 de maio a 7 de junho de 2012 e o segundo entre 13 de junho e 13 de julho de 2012. As mudas de rúcula, da cultivar \"Folha Larga\", foram transplantadas aos 10 DAS. As avaliações biométricas foram realizadas aos 10, 15, 20, 25 e 30 dias após o transplante (DAT) para: altura das plantas, número de folhas, área foliar, massa fresca e seca das folhas e massa seca das raízes. Aos 15, 20, 25 e 30 dias após o transplante (DAT) foram determinados o índice relativo de clorofila (IRC) e os teores de nitrogênio e ferro das folhas. Todos os quelatos possibilitaram fornecimento suficiente de ferro para o adequado crescimento e produtividade de rúcula em NFT. Plantas submetidas aos tratamentos Fe-HBED e Fe-EDDHA foram estatisticamente semelhantes ao quelato Fe-EDTA e Fe-ORGÂNICO, mas superiores ao Fe-IDHA e testemunha em relação ao crescimento.<br>Two experiments were carried out to evaluate the efficiency of using iron chelates in hydroponic rocket salad in a greenhouse. The experimental design was completely randomized with 4 replications and six treatments: Fe-IDHA, Fe-EDTA, Fe-ORGÂNIC, Fe-EDDHA and Fe-HBED) and control. The first experiment was conducted from May 8 to June 7, 2012 and the second between 13 June and 13 July 2012. The seedlings of rocket salad variety Folha Larga were transplanted at 10 DAS. The biometric evaluations were performed at 10, 15, 20, 25 and 30 DAT, and analyzed to: plant height, number of leaves, leaf area, fresh and dry weight of leaves and dry weight of roots. At 15, 20, 25 and 30 days after transplanting (DAT) were determined relative chlorophyll index (RCI) and nitrogen and iron contents of the leaves. All chelates made it possible sufficient supply of iron for the adequate growth and productivity of rocket in NFT. Plants subjected to treatments Fe-HBED and Fe- EDDHA were statistically similar to chelate Fe-EDTA and Fe-ORGANIC, but higher than the Fe-IDHA and control in relation to growth.