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Dissertations / Theses on the topic 'DHA oil'

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Published: 2 July 2022
Last updated: 31 July 2025

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1

Wang, Jun. "Encapsulation of DHA oil as Pickering emulsion : effect on DHA bioaccessibility and metabolism." Thesis, Rennes, Agrocampus Ouest, 2022. https://tel.archives-ouvertes.fr/tel-03711326.

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L'encapsulation peut affecter la digestion et la bioaccessibilité des composés encapsulés, ce qui peut ensuite affecter leur métabolisme. Le but de ce projet était d'étudier les effets de l'encapsulation sur la bioaccessibilité et le métabolisme du DHA, en étudiant une huile de DHA non-encapsulée ou encapsulée, apportée sous forme d'omelette comme matrice alimentaire.L'huile de DHA, composée de triacylglycérols riches en DHA, a été préparée sous forme d'émulsion de Pickering, stabilisée par des isolats de protéines de lactosérum dénaturés par la chaleur. De l'huile pure ou sous forme d’émulsio
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2

Malcolm, Cari A. "Maternal docosahexaenoic acid (DHA) supplementation and infant visual development." Thesis, Glasgow Caledonian University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270513.

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3

Atnip, Allison A. "Oxidative Stabilities of Docosahexaenoic Acid Oil and Linoleic Acid in an Aqueous System." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1284727595.

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4

Harvey, Jessica C. "The Effects of Fish Oil (EPA+DHA) on Chronic Ventilator Patients in a Long Term Acute Care Setting: A Randomized Control Trial." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1307125476.

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5

Borges, Fábio Luiz 1984. "Predição de rendimentos de derivados de petróleo a partir de análises de destilação pelo método ASTM D7169 e DHA Front End realizadas em misturas de petróleos." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266124.

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Orientador: Maria Regina Wolf Maciel<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-24T13:22:45Z (GMT). No. of bitstreams: 1 Borges_FabioLuiz_M.pdf: 1928972 bytes, checksum: 8ee551cc8034ad570e84bd024b3702ca (MD5) Previous issue date: 2014<br>Resumo: Essa dissertação tem como objetivo avaliar a utilização de curvas de destilação simulada de petróleo analisadas por dois métodos cromatográficos (ASTM D7169 e DHA Front End) combinados em um modelo de predição de rendimentos de derivados de uma unidade de desti
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6

Tippetts, Megan. "Effect of Processing and Formulation Conditions on Physicochemical Characteristics of Food Emulsions." DigitalCommons@USU, 2008. https://digitalcommons.usu.edu/etd/147.

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The objective of this research was to systematically study the effect of processing conditions on crystallization behavior and destabilization mechanisms of oil-in-water (o/w) emulsions. The effects of oil content (20 and 40 wt %); crystallization temperature (Tc = 10, 5, 0, -5, -10 °C); homogenization conditions, such as high shear (HS), very low pressure homogenization (VLPH), and high pressure homogenization (HPH); and cooling rate (0.2 and 30 °C/min) on both thermal behavior and destabilization mechanisms were analyzed. Docosahexaenoic acid (DHA) was added to VLPH emulsions and its effect
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7

Neijat, Mohamed. "Omega-3 fatty acid enrichment of chicken eggs: Regulation of long chain polyunsaturated fatty acid metabolism in laying hens." Poultry Science, 2014. http://hdl.handle.net/1993/32076.

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Eggs enriched with omega-3 polyunsaturated fatty acids (PUFA), particularly the longer chain PUFA (LCPUFA, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)) can boost human consumption of these fatty acids implicated in human health. Alpha-linolenic acid (ALA) from plant seeds/oils, primarily serve as the source of omega-3 PUFA for hens, however, the scarcity of ALA-rich plants and the limited conversion of ALA to LCPUFA are challenges for egg enrichment. Two major experiments were conducted to determine potential factors regulating egg enrichment of omega-3 LCPUFA based on detaile
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8

Rosing, Keith Andrew. "The Feasibility of a Randomized Controlled Trial Investigating the Effects of Fish Oil - Eicosapentaenoic Acid (EPA) and Docosahexanoic Acid (DHA) - on Chronic Ventilator Patients in a Long-Term Acute Care Hospital (LTACH) Setting." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1241813078.

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9

Jensen, Maren T. "Effects of A-beta immunotherapy and Omega-3 fatty acid administration in Alzheimer's transgenic mice." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001438.

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10

Woodman, Richard John. "The independent effects of purified EPA and DHA supplementation on cardiovascular risk in treated-hypertensive type 2 diabetic individuals." University of Western Australia. School of Medicine and Pharmacology, 2003. http://theses.library.uwa.edu.au/adt-WU2003.0028.

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[Formulae and special characters can only be approximated here. Please see the pdf version of the Abtract for an accurate reproduction.] Type 2 diabetes at least doubles the risk of cardiovascular disease. This can partly be explained by the increased prevalence of risk factors such as hypertension, dyslipidaemia and obesity. However, the underlying abnormality of insulin resistance and the presence of more recently identified risk factors including endothelial dysfunction, increased inflammation, and increased oxidative stress might also contribute towards the heightened cardiovascular risk
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11

Fernández, Castaño Irene. "Efecto de la administración de ácido docosahexanóico sobre las alteraciones metabólicas y sobre la distribución de grasa corporal en pacientes con infección por VIH-1 sometidos a tratamiento antiretroviral." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/399575.

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Introducción. La hipertrigliceridemia es común en los pacientes con infección por VIH. Los ácidos grasos omega 3 reducen los niveles de triglicéridos (TG) en pacientes con infección por VIH. Se desconoce si la suplementación con ácido docosahexanóico (DHA) puede reducir los niveles de TG y/o modificar la distribución corporal de grasa en pacientes con infección por VIH- Métodos. Se trata de un estudio randomizado, doble ciego, controlado con placebo con 84 pacientes tratados con antirretrovirales que tenían niveles de TG en ayunas entre 2.26 y 5.65 mmol/l y fueron ranzomizados a recibir DHA o
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12

Tagliaferri, Camille. "Mécanismes de la perte osseuse et musculaire avec l'âge et étude du potentiel de l'huile d'olive, de la vitamine D et du DHA pour une stratégie nutritionnelle de prévention." Thesis, Clermont-Ferrand 1, 2014. http://www.theses.fr/2014CLF1MM20.

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Les sociétés économiquement développées sont confrontées à la problématique du vieillissement de leur population associée à la recrudescence des pathologies dégénératives. Parmi les manifestations du vieillissement, l'atteinte de l'appareil locomoteur (ostéoporose et sarcopénie) est considérée comme un problème majeur de santé publique. De ce fait, le développement de mesures préventives permettant de préserver la santé des séniors constitue un véritable enjeu de santé publique. La recherche scientifique fournit de nombreuses preuves concernant l'importance de l'alimentation dans la diminution
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13

Rosing, Keith A. "The feasibility of a randomized controlled trial investigating the effects of fish oil- eicosapentaenoic acid (EPA) and docosahexanoic acid (DHA)- on chronic ventilator patients in a long term acute care hospital (LTACH) setting." Cincinnati, Ohio : University of Cincinnati, 2009. http://rave.ohiolink.edu/etdc/view.cgi?acc_num=ucin1241813078.

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Thesis (M.S.)--University of Cincinnati, 2009.<br>Advisor: Sarah C. Couch. Title from electronic thesis title page (viewed July 28, 2009). Includes abstract. Keywords: Fish Oil; Long-term Acute Care Hospital Setting; Mechanical Ventilation. Includes bibliographical references.
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14

Roby, Mohamed Hussein Hamdy. "Synthèse et caractérisation de biomolécules antioxidantes." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0083/document.

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Un procédé enzymatique sans solvant a été développé permettant la synthèse d'un ester phénolique de DHA. L'optimisation des paramètres réactionnels a permis d'atteindre des rendements élevés (440 g/L) d'ester de DHA et d'alcool vanillique (DHA-VE), dont les activités biologiques et le potentiel applicatif ont été évalués. L'activité inhibitrice du DHA-VE vis-à-vis des radicaux ABTS, DPPH et hydroxyle a été démontrée. Un effet neuroprotecteur de l'ester a également été mis en évidence sur des neurones primaires de rat, exposés aux oligomères du peptide [bêta]-amyloïde. Une étude in vivo a permi
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15

Ferreira, Ana Maria Coelho de Magalhães. "Efeito da suplementação de dietas com lípidos de origem marinha na composição em ácidos gordos da carne de borrego." Master's thesis, Universidade de Lisboa. Faculdade de Medicina Veterinária, 2016. http://hdl.handle.net/10400.5/11136.

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Dissertação de Mestrado em Engenharia Zootécnica/Produção Animal<br>O interesse em estudar a composição em ácidos gordos (AG) da carne de ruminantes advém da necessidade de descobrir diferentes vias para produzir carne mais saudável, isto é, com um teor de ácidos gordos polinsaturados (PUFA) mais elevado comparativamente ao teor de ácidos gordos saturados (SFA) e um balanço mais favorável entre os PUFA ómega-6 e ómega-3. O estudo realizado examinou os efeitos de diferentes fontes de PUFA de cadeia muito longa (LCPUFA) ómega-3 na composição de AG do músculo e da gordura subcutânea (GSC) de borr
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16

Simoens, Christian. "Intravascular metabolism of lipid emulsions with different fatty acid pattern: influence on fatty acid profile of membrane phospholipids in target organs and cells." Doctoral thesis, Universite Libre de Bruxelles, 2011. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209776.

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17

Sánchez, Monsalve Diego Alejandro. "Downhole Gasification (DHG) for improved oil recovery." Thesis, University of Bath, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.642042.

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Gas injection, the fastest growing tertiary oil recovery technique, holds the promise of significant recoveries from those depleted oil reservoirs around the world which fall into a pressure range of (50-200) bar mainly. However, its application with the usual techniques is restricted by the need for various surface facilities such as enormous gas supply and storage. The only surface facility that downhole gasification of hydrocarbons (DHG) requires, on the other hand, is a portable electricity generator. DHG consists in producing inert gases, H2, CO, CO2 and CH4 through the steam reforming re
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18

Drouin, Gaëtan. "Métabolisme et intérêt nutritionnel de l’acide docosapentaénoïque n-3 : modulation du statut tissulaire en acides gras n-3 par les lipides laitiers alimentaires chez le rat." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1B020/document.

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L’optimisation du statut tissulaire en acides gras polyinsaturés à longues chaines n-3 (AGPILC n-3) fait partie des objectifs actuels en nutrition humaine. En effet, de nombreux effets bénéfiques sur la santé humaine ont été démontrés pour ces différents AGPILC n-3. Néanmoins, la bioconversion de ces dérivés à partir de leur précurseur alimentaire, l’acide α-linolénique, est limitée chez l’Homme et ne permet pas de subvenir aux besoins. Parmi cette famille d’acides, l’acide docosahexaénoïque (DHA) et de l’acide eicosapentaénoïque (EPA) ont été largement étudiés à l’inverse de ceux de l’acide d
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19

Du, Qin. "Optimisation des profils lipidiques du cerveau de rats déficients en oméga-3 au sevrage par l'utilisation de matière grasse laitière : conséquences au niveau du lipidome." Thesis, Aix-Marseille 2, 2010. http://www.theses.fr/2010AIX20717/document.

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L‟acide docosahexaénoïque (DHA) s‟accumule principalement dans les membranes cérébrales humaines durant la période périnatale et les 2 premières années de la vie. Optimiser l‟incorporation des acides gras polyinsaturés à longue chaîne (AGPI-LC) n-3 dans le système nerveux central, notamment le DHA, constitue l‟un des objectifs majeurs de la nutrition néonatale et infantile. Ce projet étudie l‟effet de régimes à base de matière grasse laitière anhydre (MGLA) afin d‟améliorer la bioconversion des AGPI n-3 et l‟incorporation du DHA dans le cerveau. L‟autre objectif, au-delà des effets sur les aci
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20

Burkey, Carren Nyambare. "Bioprocessing of soybean seed-coats for production of proteins & omega-3 fatty acids using Pythium isolates." Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu159361093538274.

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21

Kim, Hyun-Jin. "Genetic analysis of a storage-oil deficient mutant of Streptomyces coelicolor A3(2)." Thesis, University of East Anglia, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302210.

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22

Lund, Linnea. "Decline Curve Analysis of Shale Oil Production : The Case of Eagle Ford." Thesis, Uppsala universitet, Naturresurser och hållbar utveckling, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-235816.

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Production of oil and gas from shale is often described as a revolution to energyproduction in North America. Since the beginning of this century the shale oilproduction has increased from practically zero to currently supply almost half of theU.S. oil production. This development is made possible by the technology ofhorizontal drilling and hydraulic fracturing. Since the production has not been ongoingfor that long, production data is still fairly limited in length and there are still largeuncertainties in many parameters, for instance production decline, lifespan, drainagearea, geographical
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23

Endo, Fumihiro, Shinpei Yamamoto, Takayuki Sadakane, Akira Yamagishi, Katsunori Miyagi, and Hitoshi Okubo. "Analysis of Gasses Generated by Electrical Discharges in Low Viscosity Silicone Oil." IEEE, 2008. http://hdl.handle.net/2237/11797.

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24

Nyskohus, Laura Sophia, and laura nyskohus@flinders edu au. "Consequences of the regulation of DNA damage and other host responses by fish oil for colorectal oncogenesis." Flinders University. Medicine, 2009. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20090730.115059.

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The acute cellular responses to DNA damaging agents are critical in determining the long term outcome of disease. A cell’s susceptibility to damage, or its capacity to remove or repair this damage, all contributes to the eventual health or disease of tissues. This process is especially crucial in colonic epithelial cells and in the development of colorectal oncogenesis. The colonic lumen is constantly subjected to different environmental compounds that may have genotoxic properties that can initiate mutational events and possibly carcinogenesis. Therefore, the study of a regulatory dietary
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25

Ye, Weiping. "Mechanisms of anticancer activities of (-)-gossypol-enriched cottonseed oil against human breast cancer cells." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1174672705.

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26

Ribeiro, Robival Alves. "Correla??es nos dfa de diversos perfis geol?gicos. estudo de caso: Bacia de Campos - RJ." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12917.

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Made available in DSpace on 2014-12-17T14:08:39Z (GMT). No. of bitstreams: 1 RobivalAR_DISSERT.pdf: 2720305 bytes, checksum: 83d53344a02e589555a480f021157774 (MD5) Previous issue date: 2010-04-14<br>This work aims to study the fluctuation structure of physical properties of oil well profiles. It was used as technique the analysis of fluctuations without trend (Detrended Fluctuation Analysis - DFA). It has been made part of the study 54 oil wells in the Campo de Namorado located in the Campos Basin in Rio de Janeiro. We studied five sections, namely: sonic, density, porosity, resistivity and
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27

AL-Amery, Maythem. "IMPACT OF A HIGH OIL AND PROTEIN ON AGRONOMIC TRAITS AND OVERALL SEED COMPOSITION IN SOYBEAN." UKnowledge, 2017. https://uknowledge.uky.edu/pss_etds/97.

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New soybean lines have been developed with significantly higher oil, protein + oil and higher meal protein. These soybeans contain a VgD1 gene (highly active acyl-CoA:diacylglycerol acyltransferase, DGAT from Vernonia galamensis (VgDGAT1A) produces much higher oil synthesis and accumulation activity in soybean. Soybean with active DGAT from Vernonia galamensis (VgDGAT1A) has active TAG biosynthesis relative to other DGATs including from soybeans and Arabidopsis. DGATs catalyze the final step of TAG synthesis: DAG (diacylglycerol) + acyl-CoA → TAG + CoASH (Coenzyme A is notable for its role in
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28

Dong, Bo. "Fiber Optic Sensors for On-Line, Real Time Power Transformer Health Monitoring." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/77175.

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High voltage power transformer is one of the most important and expensive components in today's power transmission and distribution systems. Any overlooked critical fault generated inside a power transformer may lead to a transformer catastrophic failure which could not only cause a disruption to the power system but also significant equipment damage. Accurate and prompt information on the health state of a transformer is thus the critical prerequisite for an asset manager to make a vital decision on a transformer with suspicious conditions. Partial discharge (PD) is not only a precursor of in
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29

Maester, Thais Carvalho. "Prospecção de sequências genômicas codificadoras de enzimas lipolíticas degradadoras de hidrocarbonetos de petróleo." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/87/87131/tde-15092011-151851/.

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Enzimas lipolíticas possuem enorme potencial biotecnológico. O objetivo foi prospectar genes para a codificação de enzimas lipolíticas em biblioteca metagenômica com 4224 clones. A atividade lipolítica foi avaliada pela formação de halo ao redor das colônias através do cultivo dos clones em meio de cultura suplementado com tributirina, sendo positiva para 30 clones, e dois foram selecionados e tiveram o DNA sub-clonado. Os DNAs das sub-bibliotecas foram sequenciados, gerando um contig completo para o clone PL28.F10, que foi comparado com as sequências do banco NCBI. Uma ORF codificadora de est
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30

Neto, Eduardo Piber. "Enriquecimento do ovo: utilização de óleos de peixes e alga marinha como fontes de ácidos graxos poliinsaturados ômega-3 em rações de galinhas." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/10/10136/tde-29012007-132108/.

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Foram utilizadas 168 galinhas poedeiras Hisex White em delineamento experimental inteiramente casualizado, com duração de cinco semanas. As aves foram distribuídas em sete tratamentos com três repetições cada, com o objetivo de verificar a influência da suplementação de três fontes marinhas de PUFAs n-3 - óleos de salmão (SA) e de atum e sardinha (A/S) e mistura de algas marinhas (AL), bem como sua combinações (SA+A/S, AL+SA, AL+A/S) - em relação ao grupo controle alimentado com ração basal de milho e soja (CON), sobre a qualidade do ovo e a composição lipídica da gema. A qualidade externa e i
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31

Silva, Francisco Wilton de Freitas. "DFA e an?lise de agrupamento aplicadas a perfis de porosidade neutr?nico em po?os de petr?leo." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18534.

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Made available in DSpace on 2015-03-03T13:59:42Z (GMT). No. of bitstreams: 1 FranciscoWFA.pdf: 1362232 bytes, checksum: 33548c2a28a5c7d6034cf165f163a691 (MD5) Previous issue date: 2009-05-22<br>?Peng was the first to work with the Technical DFA (Detrended Fluctuation Analysis), a tool capable of detecting auto-long-range correlation in time series with non-stationary. In this study, the technique of DFA is used to obtain the Hurst exponent (H) profile of the electric neutron porosity of the 52 oil wells in Namorado Field, located in the Campos Basin -Brazil. The purpose is to know
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Silva, ?talo Batista da. "Compara??o da an?lise de diferentes perfis de po?os pelo m?todo DFA." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12988.

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Made available in DSpace on 2014-12-17T14:08:54Z (GMT). No. of bitstreams: 1 ItaloBS_DISSERT_Parcial.pdf: 1092449 bytes, checksum: 84033c6935995f4df8913ea7b715a8e5 (MD5) Previous issue date: 2014-01-16<br>The study of complex systems has become a prestigious area of science, although relatively young . Its importance was demonstrated by the diversity of applications that several studies have already provided to various fields such as biology , economics and Climatology . In physics , the approach of complex systems is creating paradigms that influence markedly the new methods , bringin
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33

Xu, Bing. "Multidimensional approaches to performance evaluation of competing forecasting models." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/4081.

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The purpose of my research is to contribute to the field of forecasting from a methodological perspective as well as to the field of crude oil as an application area to test the performance of my methodological contributions and assess their merits. In sum, two main methodological contributions are presented. The first contribution consists of proposing a mathematical programming based approach, commonly referred to as Data Envelopment Analysis (DEA), as a multidimensional framework for relative performance evaluation of competing forecasting models or methods. As opposed to other performance
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Costa, Antonio Rufino da. "An?lise da efici?ncia de contratos de servi?os de elevada especificidade terceirizados pela petrobras." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12078.

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Made available in DSpace on 2014-12-17T13:51:36Z (GMT). No. of bitstreams: 1 Antonio RC_TESE.pdf: 2470658 bytes, checksum: a1b4f761594f9b5385c3115369d8a08a (MD5) Previous issue date: 2013-07-05<br>The definition of the boundaries of the firms is subject that has occupied the organizational theorists long ago, being the seminal work of Coase (1937) indicated as the trigger for one theoretical evolution, with emphasis on governance structures, which led to a modern theory of incomplete contracts. The Transaction Cost Economics (TCE) and Agency Theory arise within this evolution, being widely u
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35

Spiegelman, Dan. "Exploring the fusion of metagenomic library and DNA microarray technologies." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=98805.

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We explored the combination of metagenomic library and DNA microarray technologies into a single platform as a novel way to rapidly screen metagenomic libraries for genetic targets. In the "metagenomic microarray" system, metagenomic library clone DNA is printed on a microarray surface, and clones of interest are detected by hybridization to single-gene probes. This study represents the initial steps in the development of this technology. We constructed two 5,000-clone large-insert metagenomic libraries from two diesel-contaminated Arctic soil samples. We developed and optimized an automated f
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36

Wang, Zhenyuan. "Artificial Intelligence Applications in the Diagnosis of Power Transformer Incipient Faults." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/28594.

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This dissertation is a systematic study of artificial intelligence (AI) applications for the diagnosis of power transformer incipient fault. The AI techniques include artificial neural networks (ANN, or briefly neural networks - NN), expert systems, fuzzy systems and multivariate regression. The fault diagnosis is based on dissolved gas-in-oil analysis (DGA). A literature review showed that the conventional fault diagnosis methods, i.e. the ratio methods (Rogers, Dornenburg and IEC) and the key gas method, have limitations such as the "no decision" problem. Various AI techniques may help solv
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ZANINELLI, GIULIA. "ECOLOGIE IN TRANSIZIONE. ALTERNATIVE AGRICOLE ED ECONOMICHE NELLE PICCOLE PIANTAGIONI DI PALMA DA OLIO A RIAU." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/380484.

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La ricerca si incentra sullo studio delle piccole piantagioni di palma da olio nella provincia di Riau situata sull'isola di Sumatra, Indonesia. Dagli anni Settanta del XX secolo la continua espansione della frontiera agro-industriale ha portato conflitti per la terra e tensioni inter-etniche nel territorio di Riau, dove si alternano grandi piantagioni di palma da olio, acacia ed eucalipto a risaie e piccole piantagioni alberi da frutto e campi di mais o peperoncini. La piccola piantagione di palma da olio si inserisce precisamente in questa alternanza e ne costituisce l’arena politica princip
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Mata, Maria das Vit?rias Medeiros da. "An?lise de agrupamentos dos dados de DFA oriundos de perfis el?tricos de indu??o de po?os de petr?leo." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12902.

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Made available in DSpace on 2014-12-17T14:08:35Z (GMT). No. of bitstreams: 1 MariaVMMpdf.pdf: 1276052 bytes, checksum: 2a1c6384ed87c24c3ab5a2346947a35d (MD5) Previous issue date: 2009-07-24<br>The main objective of this study is to apply recently developed methods of physical-statistic to time series analysis, particularly in electrical induction s profiles of oil wells data, to study the petrophysical similarity of those wells in a spatial distribution. For this, we used the DFA method in order to know if we can or not use this technique to characterize spatially the fields. After obtain th
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Melo, André de Souza. "Identificação de pontos quentes em transformadores de potência por meio de técnicas não invasivas." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-07112017-151817/.

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Esta pesquisa apresenta uma metodologia, baseada em duas técnicas não invasivas para identificação e diagnóstico de pontos quentes em transformadores de potência durante plena operação ou em fase de projeto. A primeira técnica é baseada na medição de radiação infravermelha, emitida pelo equipamento em funcionamento e registrada por meio de análise termográfica. A segunda técnica é possível a partir do conhecimento prévio das características construtivas do transformador, fazendo uso do Método dos Elementos Finitos (MEF). A segunda técnica pode ser validada a partir das medições realizadas util
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40

Barbosa, Fabio Rocha. "Monitoramento on-line e DiagnÃstico Inteligente da Qualidade DielÃtrica do Isolamento LÃquido de Transformadores de PotÃncia." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8383.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>O monitoramento e o diagnÃstico de falhas incipientes em transformadores de potÃncia imersos em Ãleo estÃo diretamente relacionados à avaliaÃÃo das condiÃÃes do sistema de isolamento. Neste estudo, estabelece-se o conceito de monitoramento e diagnÃstico, e em seguida tÃcnicas de monitoramento on-line sÃo discutidas. Um sistema de prÃ-diagnÃstico à elaborado baseado na utilizaÃÃo de um dispositivo on-line de monitoramento, Hydran da GE, para classificar a gravidade da situaÃÃo de falha detectada. Uma vez detectada uma situaÃÃo de f
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41

Casas, Godoy Leticia. "Lipase-catalyzed purification and functionalization of Omega-3 polyunsaturated fatty acids and production of structured lipids." Thesis, Toulouse, INSA, 2012. http://www.theses.fr/2012ISAT0057/document.

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Les lipases sont des enzymes présentant un grand intérêt industriel. L’intérêt de ces enzymes a conduit à caractériser ces enzymes, à mieux comprendre leur mécanisme réactionnel et leur cinétique, et à établir des méthodes efficaces de production en système d’expression homologue et hétérologue. Plus récemment, l’ingénierie enzymatique permet d’améliorer les caractéristiques des enzymes. Ce thèse s’est fixé deux objectifs principaux: premièrement, la purification et la fonctionnalisation d’acides gras poly-insaturés de type Omega-3 (PUFAs), et spécialement l’acide cis-4, 7, 10, 13, 16, 19-doco
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42

Janda, Ondřej. "Umělá inteligence v diagnostice výkonových olejových transformátorů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-234173.

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This dissertation thesis deals with the application of expert systems and soft computing methods in field of power oil transformers. The main work is divided into theoretical and practical part. First, the theoretical part presents the basic elements of the transformer, and approaches to its diagnosis. The work focused mainly on the diagnostics of the insulation system, and diagnostic methods and approaches in this specific area. Next part describes the basics of expert systems and other soft computing methods such as: fuzzy logic, neural networks, genetic algorithms and their combinations and
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43

Barbosa, Fabio Rocha. "DiagnÃstico de Falhas Incipientes a Partir das Propriedades FÃsico-QuÃmicas do Ãleo Isolantes em Transformadores de PotÃncia Como MÃtodo Alternativo à AnÃlise de Gases Dissolvidos." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9189.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>O diagnÃstico de falhas incipientes em transformadores de potÃncia imersos em Ãleo està diretamente relacionado à avaliaÃÃo das condiÃÃes do sistema de isolamento. Este estudo aborda a relaÃÃo entre os gases dissolvidos no Ãleo e a qualidade do Ãleo mineral isolante utilizado em transformadores de potÃncia. As redes neurais artificiais sÃo utilizadas na abordagem da avaliaÃÃo das condiÃÃes operacionais do Ãleo isolante em transformadores de potÃncia, que à caracterizada por um comportamento dinÃmico nÃo-linear. As condiÃÃes de oper
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44

Deon, V. "ROLE OF BIOACTIVE-RICH DIET IN THE MODULATION OF RISK FACTORS FOR CHRONIC-DEGENERATIVE DISEASES: IN VIVO AND EX VIVO APPROACHES." Doctoral thesis, Università degli Studi di Milano, 2017. http://hdl.handle.net/2434/488137.

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Il rapido aumento dell’incidenza delle malattie cronico-degenerative è probabilmente uno dei maggiori problemi di sanità pubblica attuali. Sono numerosi gli studi che supportano il ruolo che determinati modelli alimentari ricchi in specifici alimenti o composti bioattivi hanno nella riduzione del rischio di sviluppare malattie. L’intervento di tipo nutrizionale è sempre più considerato una strategia di prevenzione primaria che risulta tra le più efficaci, convenienti e facilmente perseguibili. Recentemente, un interesse crescente si sta sempre più focalizzando su interventi dietetici personali
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45

Colombo, Natália Beatriz Rigoldi. "Ação dos compostos antioxidantes na redução do estresse oxidativo em modelo experimental de câncer de pulmão: estudo do pequi (Caryocar brasilense camb)." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/5/5160/tde-27082014-092810/.

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Introdução. Uma alimentação rica em antioxidantes pode prevenir e reparar danos oxidativos causados pelas espécies reativas de nitrogênio e oxigênio, como o dano no DNA e a peroxidação lipídica e pode reduzir o risco de câncer, aterosclerose e outras doenças degenerativas. A polpa do Caryocar Brasiliense Camb, mais conhecido como pequi, é uma fruta do cerrado brasileiro que possui altos níveis de antioxidantes como os carotenóides, vitamina C e E e compostos fenólicos. Objetivos. Verificar a atividade antioxidante do óleo e do extrato da polpa do pequi na diminuição do estresse oxidativo em um
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46

Maia, Mayara Cristina Mendes. "Mulheres ol?mpicas: cinema brasileiro, mulheres atletas e teoria feminista do cinema." Universidade Federal do Rio Grande do Norte, 2016. http://repositorio.ufrn.br/handle/123456789/21340.

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Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-29T19:32:36Z No. of bitstreams: 1 MayaraCristinaMendesMaia_DISSERT.pdf: 3094006 bytes, checksum: 6eb9d0d3601a7e6c6d840f4eb7fcdeb9 (MD5)<br>Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-09-02T23:34:57Z (GMT) No. of bitstreams: 1 MayaraCristinaMendesMaia_DISSERT.pdf: 3094006 bytes, checksum: 6eb9d0d3601a7e6c6d840f4eb7fcdeb9 (MD5)<br>Made available in DSpace on 2016-09-02T23:34:57Z (GMT). No. of bitstreams: 1 MayaraCristinaMendesMaia_DISSERT.pdf: 3094006 bytes, checksum: 6eb9d
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AMBU, GABRIELE. "Ethnobotanical and ethnopharmacological studies of medicinal plants used in rural areas of Kavrepalanchok District (Central Nepal)." Doctoral thesis, Università degli studi di Genova, 2021. http://hdl.handle.net/11567/1047246.

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The current economic and social conditions in many rural areas of the world are threatening the precious heritage of ethnobotanical knowledge and traditional farming practices.This can cause loss of precious cultural heritage and reduction in plant biodiversity, as ancient crops tend to disappear. The main aim of this thesis is to document traditional uses of plants by different ethnic groups (Tibeto-Burman and Indo-Aryan) living in certain rural areas of the Kavrepalanchok District in Central Nepal. In the study area, due to distance from urban centres and difficulty in accessing the go
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48

Johnson, Michael Farley. "Cactus Hill, Rubis-Pearsall and Blueberry Hill : one is an accident; two is a coincidence; three is a pattern : predicting "old dirt" in the Nottoway river valley of Southeastern Virginia, USA." Thesis, University of Exeter, 2012. http://hdl.handle.net/10871/9541.

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This thesis covers more than thirty years of the author's research into the Paleoamerican period of the Middle Atlantic Region of North America, including the last 19+ years of focused work on the Cactus Hill site (44SX202) and replication of the Paleoamerican occupation discovered there. Using a landform and geology based predictive model derived from the Paleoamerican occupation at Cactus Hill, the author directed preliminary archaeological testing in three other areas of the same Nottoway River Valley, where Cactus Hill is located. These areas were the Barr site, located 11 miles (18 km.) d
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Romero, Llop Roberto. "Especificación OWL de una ontología para teleeducación en WEB semántica." Doctoral thesis, Universitat Politècnica de València, 2008. http://hdl.handle.net/10251/1828.

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Debido al gran desarrollo de la World Wide Web, tanto en cantidad de contenidos y nodos como en velocidades de acceso, aparecen por parte de la comunidad científico-técnica propuestas de utilización de la misma con objetivos más ambiciosos que la mera descarga de ficheros para ser presentados al usuario. Con esa finalidad se desarrolla la Web Semántica, sistema que pretende introducir información entendible por Agentes Inteligentes, permitiendo de este modo que estos Agentes puedan aumentar sus bases de conocimiento y realizar inferencias que faciliten procesos realizados actualmente de forma
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Hanauer, André. "Le chromosome x humain : recherche de sequences exprimees et localisation genique de deux loci correspondanta des maladies." Université Louis Pasteur (Strasbourg) (1971-2008), 1989. http://www.theses.fr/1989STR13010.

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Caracterisation d'expressions geniques liees au chromosome x, de 6 sequences genomiques humaines liees au chromosome x; localisation du syndrome coffin-lowry par analyse de linkage et de la dysplasie ectodermique anhidrotique
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