Artificial Cooling
Mostrando 13-24 de 28 artigos, teses e dissertações.
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13. Análise do comportamento térmico da estrutura intra-ocular humana durante procedimento cirúrgico de remoção de catarata. / Thermal behavior analysis of human intra-ocular structure during surgical procedure of cataract removing.
O presente trabalho apresenta uma análise do comportamento térmico da estrutura intra-ocular humana durante a cirurgia de remoção de catarata. O procedimento cirúrgico em estudo, conhecido por facoemulsificação, baseia-se em destruir o cristalino opaco, removê-lo da estrutura intra-ocular e substituí-lo por uma lente artificial. A destruição do cr
Publicado em: 2008
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14. Criopreservação de sêmen de galos / Roosters sperm cryopreservation
Adding extenders to poultry semen is currently used in artificial insemination programs to optimize the management of genetically superior males. Fresh semen fertility usually declines after 1 hour of collection, raising the need to use diluents and low temperatures to store semen for longer periods. Low density lipoprotein (LDL), extracted from the egg yolk
Publicado em: 2007
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15. Fertilidade de fêmeas suínas inseminadas com sêmen diluído e resfriado a 5°C ou 17°C
Three studies were made at Farm Chua, located in Patos de Minas, State of Minas Gerais. In the study I, 43 sows of Landrace and Large White breeds were distributed equally in 3 groups, as follows: T1 sows inseminated with extended semen in the BTS® extender and storaged in refrigerator at 17ºC; T2 sows inseminated with semen extended in glycine-egg yolk ex
Publicado em: 2007
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16. Qualidade de sementes de soja resfriadas artificialmente
The objective of this research was to artificial chill of soybean seeds before bagging, through out the insuflation of cold air produced by a PSC 40 COOLSEED, measure the thermal stability over a period of time and, periodically evaluate the vigor, germination in the two blocks and to carry on a laboratory experiment with seeds from the same variety by measu
Publicado em: 2006
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17. Optimization methods for the definition of MLP neural network architectures and weights / Optimization methods for the definition of MLP neural network architectures and weights / MÃtodos de otimizaÃÃo para definiÃÃo de arquiteturas e pesos de redes neurais MLP / MÃtodos de otimizaÃÃo para definiÃÃo de arquiteturas e pesos de redes neurais MLP
This dissertation proposes modifications in the Yamazaki method for the simultaneous optimization of Multilayer Perceptron (MLP) network weights and architectures. The main objective is to propose a set of modifications with respective validations aimed at creating a more efficient optimization process. The optimization hybrid algorithm is based on the simul
Publicado em: 2005
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18. Propriedades de termoluminescência, ressonância paramagnética eletrônica e absorção óptica da rodonita natural e sintética / Thermoluminescence, electron paramagnetic resonance and optical absorption properties of natural and synthetic Rodonita
The optical absorption, electron paramagnetic resonance and thermoluminescence properties of natural silicate mineral, rhodonite with chemical formula (Mn,Ca,Fe,Mg)SiO3 as well as synthetic samples pure or doped have been investigated. Synthetic samples were obtained heating appropriated mixture of oxides components of rhodonite to above melting temperature
Publicado em: 2005
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19. Influência das condições de processamento na morfologia e das propriedades mecânicas de sistemas poliméricos moldados por injeção e sua predição através de redes neurais artificiais.
The influence of the injection molding parameters on the morphology and mechanical properties of poly(phenylene sulfide), PPS, and of a 80/20(%wt) blend of PPS/block copolymer styrene-ethylene-butylene-styrene ,SEBS, were evaluated. The injection molding conditions were defined through an experimental design. The lower and upper limits of each variable were
Publicado em: 2004
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20. Prevalência e caracterização epidemiológica da brucelose bovina no Estado de Santa Catarina / Prevalence and epidemiological characterization of bovine brucellosis in Santa Catarina state
For this study Santa Catarina has been divided in five epidemiological areas in order to know the epidemiological situation of bovine brucellosis in this state. Systematic random sampling was used for the sampling design. The prevalence of bovine brucellosis was determined as well as the epidemiological characterization of the farms in each of the five areas
Publicado em: 2004
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21. Simulação numerica de tratamento superficial por refusão a laser : interação radiação laser-materia e solidificação
In this work, a two dimensional numerical modei in cylindrical coordinates based on the finite difference technique is developed pennitting the description of the thermal field evolution during heating, fusion, solidification and cooling along the laser surface treatment processo The model predictions are compared to experimental results as well as to those
Publicado em: 2003
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22. A inserção de tecnicas de inteligencia artificial na modelagem matematica do lingotamento continuo de aços
The control of quality of products produced by continuous casting can not be achieved without a knowledge base of the process, which incorporates parameters and variables influence such as: equipment, cast metal, behavior of each component of the cooling system and operational conditions. This work presents the development of a computational algorithm (softw
Publicado em: 2001
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23. Slow-release artificial tear inserts in the treatment of dry eyes resulting from the oculomucocutaneous syndrome.
Patients with dry eyes resulting from the practolol syndrome present a therapeutic challenge. Very frequent instillation of preservative-free drops are the only therapy in most cases. Using an entirely new agent--a hydrophilic polymer in insert form--we have provided in this open study an alternative therapy which shows some subjective and objective advantag
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24. Isolation of the etiological agent of primary amoebic meningoencephalitis from artifically heated waters.
To determine whether artificial heating of water by power plant discharges facilitates proliferation of the pathogenic free-living amoebae that cause primary amoebic meningoencephalitis, water samples (250 ml) were taken from discharges within 3,000 feet (ca. 914.4 m) of power plants and were processed for amoeba culture. Pathogenic Naegleria fowleri grew ou