Down Hole
Mostrando 1-12 de 15 artigos, teses e dissertações.
-
1. New perspectives on macular hole surgery at three years of follow-up
RESUMO Objetivo: Determinar, após 3 anos de seguimento, as taxas de sucesso funcional e anatômico e a segurança da cirurgia combinada sem sutura, incluindo remoção da base vítrea e da membrana limitante interna após coloração com azul brilhante (0,5 mg/ml) para o manejo de buracos maculares idiopáticos. Métodos: Quarenta e seis olhos de 46 pacie
Arq. Bras. Oftalmol.. Publicado em: 30/09/2019
-
2. MODELING AND ANALYSIS OF UNSTEADY FLOW BEHAVIOR IN DEEPWATER CONTROLLED MUD-CAP DRILLING
Abstract A new mathematical model was developed in this study to simulate the unsteady flow in controlled mud-cap drilling systems. The model can predict the time-dependent flow inside the drill string and annulus after a circulation break. This model consists of the continuity and momentum equations solved using the explicit Euler method. The model consider
Braz. J. Chem. Eng.. Publicado em: 2016-03
-
3. Desenvolvimento de um sistema para realização de ensaios sísmicos down-hole em conjunto com o CPT / Seismic testing down-hole in conjunction with CPT
Quando ocorrem solicitações dinâmicas nos solos, torna-se indispensável a determinação do módulo de cisalhamento máximo (Go) para elaboração de projetos de Engenharia Geotécnica. Este parâmetro pode ser determinado a partir da velocidade de propagação das ondas S (Vs). Em campo, os ensaios mais empregadas para determinação de Vs são o cross-
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
-
4. Oil-water liquid flow rate determined from measured pressure drop and water hold-up in horizontal pipes
Stimulated by rapid progress in down-hole measuring techniques production engineers wonder whether in the near-future monitoring of oil/water production rates for horizontal wells can become possible on the basis of measured oil/water pressure losses and water hold-ups. A complicating issue is that these measured data depend on the oil and water flow pattern
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011
-
5. Estudo dos mecanismos genéticos e celulares durante a fase inflamatória do processo de regeneração tecidual em animais selecionados geneticamente para a máxima resposta inflamatória aguda homozigotos para os alelos R ou S do gene Slc11a1. / Study of genetic and cellular mechanisms during the inflammatory phase of tissue regeneration process in animals genetically selected for maximum acute inflammatory response homozygous for Slc11a1 R and S alleles.
Homozygous AIRmax and AIRmin sublines for Slc11a1 R and S alleles present distinct regenerative capacity to the ear hole. AIRmaxSS mice exhibited early tissue regeneration compared to AIRmaxRR animals, suggesting that the Slc11a1 S allele promotes regeneration in these animals. AIRmin sublines didnt show regeneration after ear punch. In response to the stimu
Publicado em: 2009
-
6. Active magnetic bearing applied to a tubular linear induction motor. / Mancal magnético ativo aplicado a um motor de indução linear tubular.
A tubular linear induction motor applied to onshore oil exploitation, named MATÆOS (which is in the Portuguese acronym for Tubular Asynchronous Motor for Onshore Oil Exploitation) was built at Escola Politécnica da Universidade de São Paulo (EPUSP). Its purpose is to directly drive the sucker-rod pump installed in the down hole of the oil well. In continu
Publicado em: 2009
-
7. Down the rabbit hole : language, ethics and the question of truth / Descendo a toca do coelho : linguagem, etica e a questão da verdade
A questão da constituição do sujeito é inelutável não só na lingüística, mas nas ciências humanas de forma geral. Esta tese, a fim de nos fornecer elementos para repensar o próprio papel da ciência e do intelectual na nova configuração de saberes que enfrentamos no último século, se propõe a discutir, retomando a discussão realizada por Bak
Publicado em: 2008
-
8. GERAÇÃO DE EMULSÕES DURANTE A PRODUÇÃO DE PETRÓLEO / EMULSION GENERATION DURING OIL PRODUCTION
Emulsion formation during oil production may take place in the flow inside the reservoir or in the two-phase flow down hole in production wells, and through pipelines and valves in surface facilities. Emulsions can cause a number of operational problems such as tripping of equipment in gas-oil separations plants and high pressure drops in flow lines. Flow co
Publicado em: 2007
-
9. Spin dynamics of electrons and holes in p-doped InAs/GaAs quantum dots
We have investigated the electron and hole spin dynamics in p-doped semiconductor InAs/GaAs quantum dots by time resolved photoluminescence. We observe a decay of the average electron spin polarisation down to 1/3 of its initial value with a characteristic time of TD » 500ps. We attribute this decay to the hyperfine interaction of t
Brazilian Journal of Physics. Publicado em: 2006-06
-
10. Three-dimensional conformal breast irradiation in the prone position
The prone position can be used for the planning of adjuvant radiotherapy after conservative breast surgery in order to deliver less irradiation to lung and cardiac tissue. In the present study, we compared the results of three-dimensional conformal radiotherapy planning for five patients irradiated in the supine and prone position. Tumor stage was T1N0M0 in
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-10
-
11. Shock-wave cosmology inside a black hole
We construct a class of global exact solutions of the Einstein equations that extend the Oppeheimer–Snyder model to the case of nonzero pressure, inside the black hole, by incorporating a shock wave at the leading edge of the expansion of the galaxies, arbitrarily far beyond the Hubble length in the Friedmann–Robertson–Walker (FRW) spacetime. Here the
National Academy of Sciences.
-
12. Embolization of Gianturco coil into the pulmonary artery requiring emergency surgical intervention.
We report the case of a 20-month-old girl who underwent Gianturco coil embolization to a patent ductus arteriosus in May 1997. The coil migrated to the pulmonary artery. After unsuccessful attempts to retrieve it with snares and forceps, we engaged the coil with an end-hole balloon catheter and pulled it down to the right ventricle. There it became entangled