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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
91

Measuring people's knowledge and exploring the use of this measure for policies : assessing healthcare professionals' knowledge about Sudden Infant Death Syndrome (SIDS) and its risk factors

De Luca, Federico January 2013 (has links)
This thesis focuses on how it is possible to measure people’s knowledge on a topic where certain statements can effectively discriminate between knowledgeable and non knowledgeable people. It presents an application in measuring healthcare professionals’ knowledge about Sudden Infant Death Syndrome (SIDS) and its risk factors. Identifying the best and worst prepared healthcare professionals allows policymakers to reconsider the structure of their healthcare system and to implement targeted training initiatives about this topic. To do so, this research uses data belonging to the SIDS Project, a project meant to provide the first data about this topic in the United Kingdom and Spain. The mail survey referring to the United Kingdom was carried out in the South Central Strategic Health Authority in 2012, while the Spanish one was carried out in the provinces of Barcelona, Lérida and Tarragona in 2012 and 2013. The target population for the British survey consisted of general practitioners (GPs), while the target population for the Spanish survey consisted of paediatricians. Moreover, data about Italy were also available, which allowed cross country comparisons involving three different realities. This research shows that the Back-To-Sleep (BTS) message seems to have been effectively adopted by the British GPs, but, surprisingly, not as well received by the Spanish and Italian paediatricians. In the first case, in fact, more than 90% of the respondents recommended parents the supine position exclusively. In Spain and Italy, instead, this percentage was of 58% and 69% respectively. By contract, instead, the whole SIDS prevention message seems to have been better received in Spain and Italy than in the United Kingdom. British policymakers should reconsider the role of GPs in terms of delivering parents the BTS message, as they were found to be quite prepared. Spanish and Italian policymakers, instead, should try to increase the degree of adoption of the BTS message among their healthcare professionals. In particular, Spanish policymakers should urgently intervene in order to clarify that the supine position is the only one that can be deemed to be a protective factor against SIDS.
92

Investigating the efficacy of universally delivered cognitive behaviour therapy in the promotion of emotional literacy and mental wellbeing with year 5 pupils

Brightmore, Alexandria January 2016 (has links)
This study builds on existing research into the efficacy of universal Cognitive Behaviour Therapy (CBT) based programmes in schools in the promotion of Emotional Literacy and more broadly Mental Wellbeing. Previous research in this area has focused on CBT interventions delivered to targeted groups. In this instance, the focus was on CBT based universal, whole class intervention. The specific CBT intervention utilised the ‘Think Good Feel Good: A Cognitive Behaviour Therapy Workbook for Children and Young People’ (TGFG) resource (Stallard, 2002). The researcher was also able to take the opportunity to evaluate the possible additional impact of conducting CBT based interventions in parallel with the Social and Emotional Aspects of Learning (SEAL) programme. Initially, a pilot study was conducted with a single Year 5 child. The purpose of the pilot was to provide a guide as to the effectiveness of the resources to be used, to familiarise the researcher with those tools and principles of the study, and to provide meaningful feedback to aid in the fine tuning of the full research. The main research study was conducted in two schools within the local authority in which the researcher was a practising Trainee Educational Psychologist. Participants consisted of 85 Year 5 pupils (aged between 9 and 10). Measures were recorded before and following intervention using the Southampton Emotional Literacy Resource (SELR) and the Strength and Difficulties Questionnaire (SDQ). Data were collected from teachers, parents and the children. A fixed design was employed, with participants placed in one of three groups:  Experimental group 1 - One class (n=25) received CBT intervention alongside the SEAL programme over a 6 week period. The CBT intervention consisted of two one hour long sessions per week and was delivered by the researcher, with support from the relevant class teachers  Experimental group 2 - A second class (n=31) received only the CBT based intervention, for the same period and delivered in the same manner as with experimental group 1  Control group 3 - A group of 29 Year 5 pupils were also part of the study but received no intervention. Statistical analysis on the non-normally distributed dataset indicated that significant differences were found in some domains for experimental group 2 (CBT) compared to the control group (3). Further analysis indicated that these significant differences were as a result of positive change. Additionally, significant differences were found in some domains for experimental group 1 (SEAL + CBT) when compared with experimental group 2 (CBT alone). Further analysis indicated that these significant differences were as a result of negative change. The researcher suggests that the present study tentatively contributes to the growing evidence base for the potential effectiveness of CBT based interventions delivered within a universal framework regarding the promotion of emotional literacy and mental wellbeing. Findings lend some support for the use of CBT based interventions (i.e. the Think Good Feel Good resource) as part of the standard curriculum for Year 5 pupils, suggesting a possible positive impact on some areas of emotional literacy and more broadly mental wellbeing. Additionally, the study offers potential suggestions for future study along with implications and considerations for educational psychologists when undertaking therapeutic type work with children.
93

A produção do saber nos setores populares urbanos: um estudo de caso

Gryner, Rachel 22 June 1984 (has links)
Submitted by Estagiário SPT BMHS (spt@fgv.br) on 2012-03-06T11:34:17Z No. of bitstreams: 1 000044826.pdf: 46703213 bytes, checksum: a9dd8720b3212693f19d895c00cb568d (MD5) / Made available in DSpace on 2012-03-06T11:35:54Z (GMT). No. of bitstreams: 1 000044826.pdf: 46703213 bytes, checksum: a9dd8720b3212693f19d895c00cb568d (MD5) Previous issue date: 1984 / Ce mémoire a comme but de saisir le complexe des rapports pédagogiques qui se déroulent entre individus et groupes engagés dans le secteur tertiaire de production, à l’intérieur des institutions sociales. Il se développe fondamentalement d’après l’analyse des témoignages d’un groupe de ces ouvriers, dans la ville de Petrópolis, Etat de Rio de Janeiro. L’identification du contexte dans lequel les rapports sociaux du groupe étudié s’établissent, sa caractérisation, ainsi que l’analyse des donnés obtenues, sont faites sous la perspective du système des rapports sociaux de production dans une société de classes, ce qui implique l’hégémonie et/ou la domination d’une classe sur l’autre. Nous présupposons dès le départ qu’il existe une contradiction fondamentale entre les aspirations légitimes des couches populaires et l’action pédagogique exercée par les institutions représentatives du pouvoir hégémonique. Cette contradiction engendrera à son tour, même si de manière non-explicite, une résistance des couches populaires à l’égard du pouvoir des classes dominantes. Dans notre recherche des éléments qui constituent le savoir des classes subalternes, nous voulons identifier en même temps le « noyau sain » que ce savoir contient. Nous croyons qu’il est le point de départ d’une action pédagogique tournée vers les intérêts authentiques des classes populaires. / O presente trabalho objetiva apreender o complexo de relações pedagógicas que se processam entre indivíduos e grupos engajados no setor terciário de produção, no interior das instituições sociais. Ele se desenvolve, basicamente, a partir da análise dos depoimentos de um grupo desses trabalhadores, na cidade de Petrópolis, Estado do Rio de Janeiro. A identificação do contexto no qual se estabelecem as relações sociais do grupo estudado, a sua caracterização, assim como a análise dos dados obtidos é feita na perspectiva do sistema de relações sociais de produção numa sociedade de classes, o que implica a hegemonia e/ou dominação de uma classe sobre outra. Parte0se do pressuposto de que existe uma contradição fundamental entre as legítimas aspirações das camadas populares e a ação pedagógica exercida pelas instituições representativas do poder hegemônico. Essa contradição, por sua vez, irá gerar, mesmo que de forma não explícita, a resistência das camadas populares ao poder das classes dominantes. Ao tentar determinar os elementos que constituem o saber das camadas subalternas procuramos, ao mesmo tempo identificar o 'núcleo sadio' contido neste saber. Acreditamos ser este o ponto de partida de uma ação pedagógica voltada para os autênticos interesses das classes populares.
94

Resilience, attachment and personality disorders

Llanos Aria, Cristina de January 2016 (has links)
The promotion and development of resilience in children and young people has become increasingly the focus of many preventative and treatment interventions. This is informed by evidence that suggest that a high proportion of mental health difficulties start by adolescence and can have enduring consequences later in life. One of the psychological presentations that cause significant difficulties is personality disorder. Attachment theory has been connected to both resilience and personality disorders, however their interaction has not yet been studied. This thesis aims to bring together these concepts in an attempt to contribute to the evidence of developmental pathways to personality disorders and to resilience. Chapter one presents a systematic review of the association between attachment and personality disorders in children and adolescents. The findings of the review support the literature that has previously documented this association and confirms that attachment theory is a meaningful framework for the understanding of personality disorders in children and young people. Furthermore, it includes additional factors that may interact within this relationship. This has clinical and research implications that are discussed along with the limitations of the review. Chapter two contains an empirical paper that focuses on the interaction of resilience with attachment and personality disorder. Findings from this study support existing evidence that additional factors help explain the relationship between attachment and the development of personality disorders. Thus the empirical paper enhances the findings from the literature review. Chapter three offers an account of the author’s experiences of research, including reflections on personality constructs. It encompasses these reflections within the wider experiences of clinical training to finally consider these topics in the wider context of mental health services.
95

Análise faciológica e petrográfica dos arenitos cretácicos da Bacia de Campos

Fracalossi, Franciele Girolometto January 2013 (has links)
A Bacia de Campos localiza-se na margem sudeste da costa brasileira, entre os paralelos 20.5⁰ e 23S⁰, com aproximadamente 100.000 km² de área. A bacia possui significativos volumes de hidrocarbonetos na seção pós-sal, sendo a grande maioria destas reservas em depósitos turbidíticos. Este trabalho teve como foco os arenitos depositados durante o Cretáceo, que ocupam a porção basal da Formação Carapebus da Bacia de Campos, visando à caracterização faciológica e petrográfica, interpretação do ambiente deposicional, distribuição espacial, e da qualidade dos reservatórios na região estudada. Para tal caracterização, foi feita a descrição e análise faciológica de testemunhos de sondagem de cinco poços, correlação entre os perfis geofísicos e os dados de rocha, elaboração de mapas de espessura, análise petrográfica de quarenta e nove lâminas delgadas e integração dos resultados, gerando um modelo geológico. A análise faciológica dos testemunhos definiu quinze fácies, interpretadas e agrupadas em três associações fácies (Canal Turbidítico, Lobo Turbidítico Proximal e Lobo Turbidítico Distal ou Overbank), de acordo com as características litológicas e padrões de empilhamento. A distribuição das fácies nos testemunhos está diretamente relacionada com a localização espacial do mesmo em relação ao canal turbidítico. Mapas de espessura foram gerados com base nos testemunhos e perfis geofísicos, e mostraram uma calha principal de deposição das areias com orientação aproximada NW-SE. Através da análise petrográfica foram definidas dezessete petrofácies de reservatório, que foram classificadas em quatro associações de petrofácies definidas com base no impacto na qualidade de reservatório (Porosas, Parcialmente Cimentadas, Cimentadas_Compactadas e Lutitos). Os principais fatores que controlam a qualidade de reservatório são a quantidade de intraclastos e pseudomatriz lamosa e de cimento carbonático. De forma geral, os crescimentos secundários atuaram de forma positiva na porosidade, sustentando o arcabouço e reduzindo a compactação mecânica. As associações de fácies de Canal Turbidítico e Lobo Turbidítico Proximal possuem as melhores qualidades de reservatório, apresentando a maior ocorrência da associação de petrofácies Porosa. Com base na correlação entre os dados de rocha (testemunhos e lâminas delgadas) e os perfis geofísicos, foram definidas assinaturas especificas para as melhores e piores qualidades de reservatório. Foi ainda possível observar que os poços A e D possuem as melhores qualidades de reservatório, estando localizados na parte central da calha principal de deposição do sistema turbidítico em questão. A integração das ferramentas utilizadas neste estudo contribuiu para a caracterização dos arenitos santonianos estudados, especialmente no sentido de compreender as heterogeneidades dos reservatórios, identificando as barreiras de fluxo que compartimentam os mesmos. / The Campos Basin is located in the southeastern margin of the Brazilian coast, between the parallels 20.5⁰ and 23⁰ S, with an area of approximately 100.000 km². The basin contains significant volumes of hydrocarbons in the post-salt section, with most of the reserves accumulated in turbidite deposits. This dissertation focuses on the study of sandstones deposited during the Cretaceous, comprising the basal Carapebus Formation. The main objectives are to characterize these sandstones and associated rocks in terms of facies and petrography, to interpret the depositional environment, spatial distribution and reservoir quality of these deposits. For this characterization, the description and facies analysis of cores from five wells was carried out, correlation between well-log and rock data, elaboration of thickness maps, petrographic analysis of forty-nine thin sections and integration of the results, leading to the proposition of a geological model. Facies analysis of the cores defined fifteen facies, interpreted and grouped into three facies associations (Turbidite Channel, Proximal Turbidite Lobe and Distal Turbidite Lobe or Overbank), according to the lithologic characteristics and stacking patterns. Facies distribution in the cores is directly related to their spatial location in relation to the turbidite channel. Thickness maps were generated based on cores and well logs, and they showed the deposition of sands along an approximately NW-SEoriented main channel. Through petrographic analysis seventeen reservoir petrofacies were defined, grouped into four petrofacies associations based on the impact on reservoir quality (Porous, Partly Cemented, and Cemented_Compacted and Lutites). The main controls on reservoir quality are the amount of mud intraclasts and pseudomatrix and carbonate cement. Overall, the presence of overgrowths had a positive impact on porosity, supporting the framework against mechanical compaction. The Turbidite Channel and Proximal Turbidite Lobe facies associations display the best reservoir qualities, with the common occurrence of Porous petrofacies association. Based on correlation of rock (cores and thin section) and well-log data, specific signatures were defined for the best and worst reservoir qualities. It was also observed that wells A and D have the best reservoir quality, being located in the central part of the main turbidite channel in this system. The integration of tools in this study contributed to the characterization of the studied Santonian sandstones, especially in order to understand heterogeneities in the reservoirs, identifying flow barriers and reservoir compartmentalization.
96

Deposição, diagênese e potencial de reservatório das rochas sedimentares não-carbonáticas da seção rifte da Bacia de Campos

Armelenti, Garibaldi January 2014 (has links)
Um estudo petrográfico foi conduzido na seção rifte do Grupo Lagoa Feia, Cretáceo Inferior da Bacia de Campos, margem leste brasileira, como parte de um projeto regional integrado. Os principais constituintes das rochas analisadas são grãos siliciclásticos e vulcanoclásticos, oóides e pelóides estevensíticos, e bioclastos de bivalves e ostracodes. Este estudo foi focado nas rochas clásticas, estevensíticas e híbridas, desde que os estudos precedentes ficaram limitados às rochas carbonáticas que constituem os reservatórios produtores. A maior parte da sedimentação rifte foi intrabacial, com concentração da contribuição extrabacial na proximidade das falhas de borda dos blocos rifteados. Nos arenitos e conglomerados clásticos, a mistura de fragmentos vulcânicos arredondados com grãos de quartzo e feldspatos e fragmentos plutônicos angulosos indica a reciclagem de depósitos epiclásticos do início do rifte, combinada com sedimentos de primeiro ciclo erodidos de blocos soerguidos do embasamento granítico-gnáissico. Os oóides e pelóides estevensíticos foram formados em ambientes lacustres alcalinos rasos, levemente agitados por ondas ou correntes. Eles foram misturados com bioclastos de bivalves e ostracodes e com sedimentos clásticos em toda seção rifte. Esta re-deposição gravitacional foi promovida por movimentos tectônicos ao longo das margens dos blocos estruturais falhados. Os principais processos diagenéticos nos arenitos e conglomerados clásticos e nos arenitos híbridos são a cimentação e substituição de grãos por esmectita, zeolitas, calcita e dolomita, compactação limitada e dissolução de feldspatos, fragmentos vulcânicos e bioclastos. Os arenitos estevensíticos sofreram cimentação precoce e substituição dos oóides e pelóides por quartzo, calcita e dolomita, ou intensa compactação dos grãos estevensíticos dúcteis nas áreas não cimentadas. Arenitos e conglomerados vulcanoclásticos com porosidade intergranular parcialmente reduzida por franjas de esmectita e com alguma dissolução de grãos podem constituir reservatórios de qualidade regular. Arenitos estevensíticos e híbridos com dissolução de grãos estevensíticos, bioclastos e de cimento de calcita podem também constituir reservatórios, com qualidade potencial limitada pela conexão restrita de tais sistemas porosos. A compreensão dos controles espaciais e temporais sobre a evolução deposicional e diagenética das litologias rifte carbonáticas e não-carbonáticas, gravitacionalmente re-depositadas, irá contribuir para o estabelecimento de novas estratégias de exploração para a Bacia de Campos. / A petrographic study was conducted on the rift section of the Lagoa Feia Group, Lower Cretaceous of the Campos Basin, eastern Brazilian margin, as part of a regional, integrated project. The main primary constituents of the analyzed rocks are siliciclastic and volcaniclastic grains, stevensitic ooids and peloids, and bivalve and ostracod bioclasts. This study focused in the clastic, stevensitic and hybrid rocks, as previous studies were limited to the bioclastic rudstones and grainstones that constitute the producing reservoirs. Most rift sedimentation was intrabasinal, with extrabasinal contribution concentrated at the proximity of border faults along rifted blocks. In the clastic sandstones and conglomerates, the mixture of rounded volcanic fragments with angular quartz, feldspars and plutonic fragments indicates the recycling of early rift epiclastic deposits, combined with first-cycle sediments eroded from uplifted granitic-gneissic basement blocks. Stevensitic ooids and peloids were formed in shallow, alkaline lacustrine environments, slightly agitated by waves or currents. They were mixed throughout the rift section with bivalve and ostracod bioclasts, and with clastic sediments. This gravitational re-deposition was promoted by intense and recurrent tectonic movements along the margins of rifted structural blocks. The main diagenetic processes in clastic sandstones and conglomerates and hybrid arenites are cementation and grain replacement by smectite, zeolites, calcite and dolomite, limited compaction and dissolution of feldspars, volcanic fragments and bioclasts. Stevensitic arenites experienced early cementation and replacement of ooids and peloids by quartz, calcite and dolomite, or intense compaction of the ductile stevensitic grains in uncemented areas. Volcaniclastic sandstones and conglomerates with intergranular porosity partially reduced by smectite rims and some grain dissolution may constitute fair hydrocarbon reservoirs. Stevensitic and hybrid arenites with dissolution of stevensitic grains, bioclasts and calcite cement may also constitute reservoirs, with potential quality limited by the poor connection of such pore systems. The understanding of the space and time controls on the depositional and diagenetic evolution of the dominantly intrabasinal, gravitationally re-deposited rift carbonate and non-carbonate rocks will contribute to new exploration strategies for the Campos Basin.
97

The development and evaluation of a scale to assess pain in the post-operative neonate

Horgan, Maureen F. January 2000 (has links)
Debate surrounding the issue of pain management in neonates has mushroomed over the last ten years. Previously held beliefs that neonates do not feel pain because their anatomical make up is different from that of an adult, and that they do not remember pain therefore there is no need to relieve it have been demonstrated as erroneous. Studies such as Volpe (1981), Gilles, Shankle and Dooling (1983) and Beyer and Wells (1989) refuted previously held physiological misconceptions. Anand and Hickeys' 1987 study did much to raise our awareness of the deleterious effects of unrelieved pain in neonates. The impetus for the present study was the wish to improve analgesic techniques in one such group of infants - postoperative neonates. Valid assessment is foundational to improving analgesia and measuring the efficacy of interventions thus broadening our knowledge of safe, effective methods of preventing undue pain in newborns. The research presented here follows four distinct phases. The primary aim of the research was to develop a pain assessment tool. This was initially developed by use of an observational research technique, watching and cataloguing the behaviour of newborns (n=25) over a number of hours in their home environment. Video recordings of normal neonatal behaviour and development were also viewed and empirical evidence from neonatal behaviour experts such as Wolff (1966), Brazelton (1977) and Trevarthan (1977) was drawn upon to provide a detailed overview of neonatal behaviour. Observations were then made on a surgical group of babies (n=34) around normal caregiving episodes. Each observation lasted a number of hours. Some of these episodes were videod for later viewing by 3 clinical psychologists. The qualitative data collected from the observations of these babies (n = 59) was transcribed. The unstructured observations of both real life and video recordings collected by pen and paper provided rich, descriptive information to be analysed qualitatively. Glaser & Strauss (1967) term these "field notes". The field notes were then reduced in order to summarise the information by teasing out themes around which behaviours were clustered (Miles and Huberman 1984). These categories were organised into a detailed scoring system. This was called the Liverpool Infant Distress Score (LIDS). Following initial development the scale was subjected to rigorous reliability and validity tests. After piloting the scale on a further 10 babies undergoing surgery, adjustments were made to the initial scale. The scale was then applied to 31 babies in the peri operative period and a control group of 10 non surgical babies. Validity of LIDS was demonstrated. The value of an assessment tool such as LIDS also lies in its ability to be reproduced consistently and accurately by differing carers. (Melzack 1984). The next part of the study addressed this issue. By teaching the scale to a group of 4 nurses and testing their scores over a number of assessments, inter rater reliability was demonstrated. The final phase of the study compared the subjective scores of two groups of nurses – one experienced neonatal nurses, one paediatric nurses- to the more objective LIDS scores. The results from this final phase of the study suggest that despite an increase generally in nurse awareness regarding pain cues in neonates, pain assessment is still open to subjectivity.
98

Análise faciológica e petrográfica dos arenitos cretácicos da Bacia de Campos

Fracalossi, Franciele Girolometto January 2013 (has links)
A Bacia de Campos localiza-se na margem sudeste da costa brasileira, entre os paralelos 20.5⁰ e 23S⁰, com aproximadamente 100.000 km² de área. A bacia possui significativos volumes de hidrocarbonetos na seção pós-sal, sendo a grande maioria destas reservas em depósitos turbidíticos. Este trabalho teve como foco os arenitos depositados durante o Cretáceo, que ocupam a porção basal da Formação Carapebus da Bacia de Campos, visando à caracterização faciológica e petrográfica, interpretação do ambiente deposicional, distribuição espacial, e da qualidade dos reservatórios na região estudada. Para tal caracterização, foi feita a descrição e análise faciológica de testemunhos de sondagem de cinco poços, correlação entre os perfis geofísicos e os dados de rocha, elaboração de mapas de espessura, análise petrográfica de quarenta e nove lâminas delgadas e integração dos resultados, gerando um modelo geológico. A análise faciológica dos testemunhos definiu quinze fácies, interpretadas e agrupadas em três associações fácies (Canal Turbidítico, Lobo Turbidítico Proximal e Lobo Turbidítico Distal ou Overbank), de acordo com as características litológicas e padrões de empilhamento. A distribuição das fácies nos testemunhos está diretamente relacionada com a localização espacial do mesmo em relação ao canal turbidítico. Mapas de espessura foram gerados com base nos testemunhos e perfis geofísicos, e mostraram uma calha principal de deposição das areias com orientação aproximada NW-SE. Através da análise petrográfica foram definidas dezessete petrofácies de reservatório, que foram classificadas em quatro associações de petrofácies definidas com base no impacto na qualidade de reservatório (Porosas, Parcialmente Cimentadas, Cimentadas_Compactadas e Lutitos). Os principais fatores que controlam a qualidade de reservatório são a quantidade de intraclastos e pseudomatriz lamosa e de cimento carbonático. De forma geral, os crescimentos secundários atuaram de forma positiva na porosidade, sustentando o arcabouço e reduzindo a compactação mecânica. As associações de fácies de Canal Turbidítico e Lobo Turbidítico Proximal possuem as melhores qualidades de reservatório, apresentando a maior ocorrência da associação de petrofácies Porosa. Com base na correlação entre os dados de rocha (testemunhos e lâminas delgadas) e os perfis geofísicos, foram definidas assinaturas especificas para as melhores e piores qualidades de reservatório. Foi ainda possível observar que os poços A e D possuem as melhores qualidades de reservatório, estando localizados na parte central da calha principal de deposição do sistema turbidítico em questão. A integração das ferramentas utilizadas neste estudo contribuiu para a caracterização dos arenitos santonianos estudados, especialmente no sentido de compreender as heterogeneidades dos reservatórios, identificando as barreiras de fluxo que compartimentam os mesmos. / The Campos Basin is located in the southeastern margin of the Brazilian coast, between the parallels 20.5⁰ and 23⁰ S, with an area of approximately 100.000 km². The basin contains significant volumes of hydrocarbons in the post-salt section, with most of the reserves accumulated in turbidite deposits. This dissertation focuses on the study of sandstones deposited during the Cretaceous, comprising the basal Carapebus Formation. The main objectives are to characterize these sandstones and associated rocks in terms of facies and petrography, to interpret the depositional environment, spatial distribution and reservoir quality of these deposits. For this characterization, the description and facies analysis of cores from five wells was carried out, correlation between well-log and rock data, elaboration of thickness maps, petrographic analysis of forty-nine thin sections and integration of the results, leading to the proposition of a geological model. Facies analysis of the cores defined fifteen facies, interpreted and grouped into three facies associations (Turbidite Channel, Proximal Turbidite Lobe and Distal Turbidite Lobe or Overbank), according to the lithologic characteristics and stacking patterns. Facies distribution in the cores is directly related to their spatial location in relation to the turbidite channel. Thickness maps were generated based on cores and well logs, and they showed the deposition of sands along an approximately NW-SEoriented main channel. Through petrographic analysis seventeen reservoir petrofacies were defined, grouped into four petrofacies associations based on the impact on reservoir quality (Porous, Partly Cemented, and Cemented_Compacted and Lutites). The main controls on reservoir quality are the amount of mud intraclasts and pseudomatrix and carbonate cement. Overall, the presence of overgrowths had a positive impact on porosity, supporting the framework against mechanical compaction. The Turbidite Channel and Proximal Turbidite Lobe facies associations display the best reservoir qualities, with the common occurrence of Porous petrofacies association. Based on correlation of rock (cores and thin section) and well-log data, specific signatures were defined for the best and worst reservoir qualities. It was also observed that wells A and D have the best reservoir quality, being located in the central part of the main turbidite channel in this system. The integration of tools in this study contributed to the characterization of the studied Santonian sandstones, especially in order to understand heterogeneities in the reservoirs, identifying flow barriers and reservoir compartmentalization.
99

Deposição, diagênese e potencial de reservatório das rochas sedimentares não-carbonáticas da seção rifte da Bacia de Campos

Armelenti, Garibaldi January 2014 (has links)
Um estudo petrográfico foi conduzido na seção rifte do Grupo Lagoa Feia, Cretáceo Inferior da Bacia de Campos, margem leste brasileira, como parte de um projeto regional integrado. Os principais constituintes das rochas analisadas são grãos siliciclásticos e vulcanoclásticos, oóides e pelóides estevensíticos, e bioclastos de bivalves e ostracodes. Este estudo foi focado nas rochas clásticas, estevensíticas e híbridas, desde que os estudos precedentes ficaram limitados às rochas carbonáticas que constituem os reservatórios produtores. A maior parte da sedimentação rifte foi intrabacial, com concentração da contribuição extrabacial na proximidade das falhas de borda dos blocos rifteados. Nos arenitos e conglomerados clásticos, a mistura de fragmentos vulcânicos arredondados com grãos de quartzo e feldspatos e fragmentos plutônicos angulosos indica a reciclagem de depósitos epiclásticos do início do rifte, combinada com sedimentos de primeiro ciclo erodidos de blocos soerguidos do embasamento granítico-gnáissico. Os oóides e pelóides estevensíticos foram formados em ambientes lacustres alcalinos rasos, levemente agitados por ondas ou correntes. Eles foram misturados com bioclastos de bivalves e ostracodes e com sedimentos clásticos em toda seção rifte. Esta re-deposição gravitacional foi promovida por movimentos tectônicos ao longo das margens dos blocos estruturais falhados. Os principais processos diagenéticos nos arenitos e conglomerados clásticos e nos arenitos híbridos são a cimentação e substituição de grãos por esmectita, zeolitas, calcita e dolomita, compactação limitada e dissolução de feldspatos, fragmentos vulcânicos e bioclastos. Os arenitos estevensíticos sofreram cimentação precoce e substituição dos oóides e pelóides por quartzo, calcita e dolomita, ou intensa compactação dos grãos estevensíticos dúcteis nas áreas não cimentadas. Arenitos e conglomerados vulcanoclásticos com porosidade intergranular parcialmente reduzida por franjas de esmectita e com alguma dissolução de grãos podem constituir reservatórios de qualidade regular. Arenitos estevensíticos e híbridos com dissolução de grãos estevensíticos, bioclastos e de cimento de calcita podem também constituir reservatórios, com qualidade potencial limitada pela conexão restrita de tais sistemas porosos. A compreensão dos controles espaciais e temporais sobre a evolução deposicional e diagenética das litologias rifte carbonáticas e não-carbonáticas, gravitacionalmente re-depositadas, irá contribuir para o estabelecimento de novas estratégias de exploração para a Bacia de Campos. / A petrographic study was conducted on the rift section of the Lagoa Feia Group, Lower Cretaceous of the Campos Basin, eastern Brazilian margin, as part of a regional, integrated project. The main primary constituents of the analyzed rocks are siliciclastic and volcaniclastic grains, stevensitic ooids and peloids, and bivalve and ostracod bioclasts. This study focused in the clastic, stevensitic and hybrid rocks, as previous studies were limited to the bioclastic rudstones and grainstones that constitute the producing reservoirs. Most rift sedimentation was intrabasinal, with extrabasinal contribution concentrated at the proximity of border faults along rifted blocks. In the clastic sandstones and conglomerates, the mixture of rounded volcanic fragments with angular quartz, feldspars and plutonic fragments indicates the recycling of early rift epiclastic deposits, combined with first-cycle sediments eroded from uplifted granitic-gneissic basement blocks. Stevensitic ooids and peloids were formed in shallow, alkaline lacustrine environments, slightly agitated by waves or currents. They were mixed throughout the rift section with bivalve and ostracod bioclasts, and with clastic sediments. This gravitational re-deposition was promoted by intense and recurrent tectonic movements along the margins of rifted structural blocks. The main diagenetic processes in clastic sandstones and conglomerates and hybrid arenites are cementation and grain replacement by smectite, zeolites, calcite and dolomite, limited compaction and dissolution of feldspars, volcanic fragments and bioclasts. Stevensitic arenites experienced early cementation and replacement of ooids and peloids by quartz, calcite and dolomite, or intense compaction of the ductile stevensitic grains in uncemented areas. Volcaniclastic sandstones and conglomerates with intergranular porosity partially reduced by smectite rims and some grain dissolution may constitute fair hydrocarbon reservoirs. Stevensitic and hybrid arenites with dissolution of stevensitic grains, bioclasts and calcite cement may also constitute reservoirs, with potential quality limited by the poor connection of such pore systems. The understanding of the space and time controls on the depositional and diagenetic evolution of the dominantly intrabasinal, gravitationally re-deposited rift carbonate and non-carbonate rocks will contribute to new exploration strategies for the Campos Basin.
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Contribuição para a análise urbana a partir do georreferenciamento de elementos morfométricos de plantas antigas : Rio de Janeiro, 1812 e 1906

Figueiredo, Cláudio Chagas 14 July 2008 (has links)
Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Humanas, Departamento de Geografia, 2008. / Submitted by Kathryn Cardim Araujo (kathryn.cardim@gmail.com) on 2009-10-16T14:27:36Z No. of bitstreams: 2 2008_ClaudioChagasFigueiredo_pag40_atefinal.pdf: 5232030 bytes, checksum: 36c507616fbcd753e20228590e925f0b (MD5) 2008_ClaudioChagasFigueiredo_atepag39.pdf: 3878804 bytes, checksum: e004046dbbcc6939d8b3a2f7059cc5b9 (MD5) / Approved for entry into archive by Marília Freitas(marilia@bce.unb.br) on 2010-02-09T22:07:50Z (GMT) No. of bitstreams: 2 2008_ClaudioChagasFigueiredo_pag40_atefinal.pdf: 5232030 bytes, checksum: 36c507616fbcd753e20228590e925f0b (MD5) 2008_ClaudioChagasFigueiredo_atepag39.pdf: 3878804 bytes, checksum: e004046dbbcc6939d8b3a2f7059cc5b9 (MD5) / Made available in DSpace on 2010-02-09T22:07:50Z (GMT). No. of bitstreams: 2 2008_ClaudioChagasFigueiredo_pag40_atefinal.pdf: 5232030 bytes, checksum: 36c507616fbcd753e20228590e925f0b (MD5) 2008_ClaudioChagasFigueiredo_atepag39.pdf: 3878804 bytes, checksum: e004046dbbcc6939d8b3a2f7059cc5b9 (MD5) Previous issue date: 2008-07-14 / Além de apresentarem informações que auxiliam no entendimento da lógica de ocupação de cidades ao longo do tempo, as plantas do passado refletem, como documentos históricos, os anseios dos diversos atores envolvidos na construção do espaço urbano. Nessa linha, esta dissertação segue dois eixos aparentemente distintos, ao considerar as relações matemáticas aplicadas no processo de construção de cada representação e ao examinar a atuação dos agentes envolvidos na dinâmica espacial da área de estudo. Desse modo, o presente trabalho tem como objetivo investigar a evolução da cidade do Rio de Janeiro ao longo do período estudado, baseando-se em dados recuperados de plantas do passado e na comparação de elementos encontrados nestes documentos cartográficos. Para isso, aplicou-se a técnica de georreferenciamento em duas plantas, referentes aos anos de 1812 e 1906, nas quais foram utilizados elementos que permanecem até os dias de hoje, que permitem o relacionamento entre estas representações e uma base cartográfica recente. Por outro lado, realizou-se uma observação multitemporal, baseada na atuação dos agentes modeladores do espaço, buscando entender os interesses envolvidos na construção das plantas, que resultaram dos conhecimentos adquiridos sobre o espaço, segundo os pontos de vista daqueles que as construíram. Dessa forma, cada planta é fruto da sociedade que a criou, apresentando as conseqüências das relações entre os agentes produtores e consumidores do espaço traduzidas em traços de desenho. Considerando a aplicação da técnica cartográfica, deve ser lembrado que as duas plantas foram construídas empregando os melhores procedimentos disponíveis na época de sua elaboração, o que ilustra o esforço de uma representação precisa e científica. Vale lembrar, ainda, que os principais elementos de ligação entre as plantas são imóveis do Estado ou da Igreja, o que os caracteriza como os principais agentes modeladores. Mas devese ressaltar a importância de outros agentes, que também tiveram seus interesses materializados no espaço e, conseqüentemente, nas representações. _______________________________________________________________________________ ABSTRACT / The old maps get in itself information which would help understanding the city development throughout the time. These maps are historical documents that have been shown the desire and wish of different people who had worked in the urban area organization. This research gets two ways. By one hand think about the mathematic relationship present in this kind of representation. By other hand analyzing that one who took part in the searched urban area involved in this plot. So, the purpose of this paper is the searching of the Rio de Janeiro development through the studied period, based on ancient maps and their information. It has been applied georeferencing technique in two maps dated on 1812 and 1906, linking them with a modern map. By other hand it has been observing through the time by the social and government institutions such as another agents action.

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