Diameter Prediction
Mostrando 37-48 de 74 artigos, teses e dissertações.
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37. Seleção genômica ampla no melhoramento vegetal / Genome wide selection in plant breeding
The Genome Wide selection was proposed in 2001 to predict the phenotype values based in molecular markers information. In a previus step, the effect of each of each marker in controlling the genetic variance is estimated. This technology has already been used in animals, however, no report of its use was made for plants. This work aimed to study the impact o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/04/2010
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38. Mass transfer coeficients in pulsed perforated-plate extraction columns
This study examined the mass transfer performance in a pulsed perforated-plate extraction column with diameter of 50 mm using two different liquid systems. Mass transfer coefficients have been interpreted in terms of the axial diffusion model. The effects of pulsation intensity and dispersed and continuous phase velocities on the mass transfer performance ha
Brazilian Journal of Chemical Engineering. Publicado em: 2010-06
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39. HETP evaluation of structured packing distillation column
Several tests with a hydrocarbon mixture of known composition (C8-C14), obtained from DETEN Chemistry S.A., have been performed in a laboratory distillation column, having 40mm of nominal diameter and 2.2m high, with internals of Sulzer DX gauze stainless steel structured packing. The main purpose of this work was to evaluate HETP of a structured packing lab
Brazilian Journal of Chemical Engineering. Publicado em: 2009-09
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40. Jet Grouting (sistema monofluido): um método teórico simplificado para a previsão do diâmetro das colunas. / Jet Grouting (single fluid system): a theoretical simplificated method for the prediction of column diameter.
Jet grouting is one of the most popular ground improvement techniques all over the world. The method is based on high-speed grouting of water-cement mixtures and/or other fluids (air, water) into the subsoil. The fluids are injected through small diameter nozzles placed on a grout pipe, which is continuously rotated at a constant rate and slowly raised towar
Publicado em: 2009
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41. PHYSICAL SIMULATION OF WELLBORE MECHANICAL BEHAVIOR / SIMULAÇÃO FÍSICA DO COMPORTAMENTO MECÂNICO DE POÇOS DE PETRÓLEO
A major problem during hydrocarbon production from poorly consolidated sandstone in the influx of sand, or sand production. This problem is complex and can occur as a result of a large variety of reasons, like magnitude of the in situ stresses, formation strength, and wellbore-development operations. If the potential for sand production could be predicted, t
Publicado em: 2009
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42. Simulação numérica da separação de misturas CH4/He e CO2/He em colunas de adsorção em leito fixo
Methane and carbon dioxide gases are part of natural gas composition and methane is in bigger proportion. Both gases are pollutants which methane is the most responsible by the greenhouse effect and carbon dioxide in turn by pipelines oxidation in natural gas transporting. The separation of CO2 from natural gas promotes an increase in calorific power of the
Publicado em: 2009
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43. Potencial de utilizaÃÃo de frutos de genÃtipos de muricizeiros cultivados no litoral do Cearà / Potential use of fruits cultivated genotypes muricizeiros the coast of Ceara
The objective of this work was to evaluate fruits of nance (Byrsonima dealbata), from different genotypes, by means of the physical and physical-chemical characterization. Fruits of nance were collected of from genotypes of the three experimental station of EMBRAPA - Empresa Brasileira de Pesquisa AgropecuÃria, in CearÃ, Brazil. Eighteen genotypes of nance
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/03/2008
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44. Individual risk prediction of node and distant metastasis based on lymphangiogenic intensity in typical pulmonary carcinoid tumor / Predição do risco individual de metástase linfática e hematogênica em função da intensidade da linfangiogênese no tumor carcinóide típico broncopulmonar
Typical pulmonary carcinoids are neuroendocrine cells proliferations and they were former considered lung adenomas with no hematogenic or lymphatic metastatic potential. However, it is known that up to 20% of patients develop metastatic disease. It is mandatory that new studies be developed due to the variation in clinical presentation of these patients. It
Publicado em: 2008
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45. Accuracy evaluation of a radiographic-surgical guide for mini-implant placement / Avaliação da precisão de um guia radiográfico-cirúrgico para inserção de mini-implantes
OBJECTIVE This study evaluated the radiographic-surgical guide accuracy to predict post-surgical mini-implant positioning in the interradicular septum. Additionally, a risk index to standardize surgical procedure indication for mini-implant insertion was determined. MATERIAL AND METHODS A total of fifty-three titanium mini-implants were placed in the buccal
Publicado em: 2008
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46. Estudo da fluidodinâmica e da secagem de um secador rotatório da indústria de fertilizantes
The dimensioning, the modeling and the simulation of the rotary dryers constitutes a big challenge. The drying involves mass and heat transfer, and fluid dynamics processes of the most different forms. Great part of the dryers projects are done according to empiricism and based on the experience of engineers and on the scale-up of prototypes. The purpose of
Publicado em: 2008
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47. Experiments on the fundamental mechanisms of boiling heat transfer
The lecture presents a survey of results found by the author and his team during recent years. An experimental technique for precise and systematic measurements of entire boiling curves under steady-state and transient conditions has been developed. Pool boiling experiments for well wettingfluids and fluids with a larger contact angle (FC-72, isopropanol, wa
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-03
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48. High performance concrete effects on concrete-steel bond / Efeitos do concreto de alto desempenho na aderencia concreto-aço
This paper presents the study about the bond phenomenon in High Performance Concrete, through the analisys of the flexibility of reinforced concrete beams with HPC. The bond was analyzed under the anchorage and cracking aspects, on longitudinal bars part spliced by transfix. Three types of beam models were analyzed, according to the manner which they were tr
Publicado em: 2005