Surface Simplification
Mostrando 1-12 de 14 artigos, teses e dissertações.
-
1. Controlling sintering and grain growth of nanoceramics
Resumo Sinterização e crescimento de grão são processos fundamentais que afetam a evolução microestrutural das cerâmicas. Os modelos fenomenológicos que descrevem esses processos, conforme encontrados nos livros didáticos, são simplificações do conjunto altamente dinâmico de parâmetros do sistema, o que leva à previsibilidade limitada e à nec
Cerâmica. Publicado em: 2019-01
-
2. Medidas de tensão superficial pelo método de contagem de gotas: descrição do método e experimentos com tensoativos não-iônicos etoxilados
Surface tension knowledge of surfactants aqueous solutions is important during amphiphilic molecule manufacturing and new product development, as feedback information to handle synthesis parameters to target performance. Drop counting method is an interesting simplification of drop weight method for surface tension measurements. A simple laboratory measureme
Química Nova. Publicado em: 2009
-
3. Detecção de mudanças e recuperação de forma em mapas 3D basedos em nuvens de pontos
This work proposes a framework to efficiently detect and segment changes in 3D point clouds. Initially, we simplify the point cloud which generates a tree representation in order to preserve the relevant characteristics using surface variation as the key constraint. Then, a combined approach using Gaussian Mixture Models (GMM) and the Earth Mover s Distance
Publicado em: 2009
-
4. Análise do comportamento iônico em sistemas constituídos por micelas aniônicas, zwitteriônicas ou vesículas catiônicas: uma abordagem teórica por aproximação de campo médio / The analysis of ionic properties in anionic and zwitterionic micelles or cationic vesicles systems: a mean field theoretical approach
Membranes and organelles are structures present in biological systems. Such structures are interfaces between electrolytes. Addressing to the description, interpretation and comprehension of the ionic distribution around the structures an attempt is done is this work analyzing experimental results from the investigation of the following systems: 1) SDS micel
Publicado em: 2006
-
5. Comparação de tecnicas de analise de risco aplicadas ao desenvolvimento de campos de petroleo / Comparison of tecniques for risk analysis applied to petroleum field development
Petroleum field decision-making process is associated to high risks due to geological, economic and technological uncertainties, and high investments, mainly in the appraisal and development phases of petroleum fields where it is necessary to model the recovery process with higher precision increasing the computational time. One way to speedup the process is
Publicado em: 2005
-
6. Effects of a potassium oxalate gel/adhesive agent combined application on dentin permeability: an in vitro study / Avaliação in vitro dos efeitos da aplicação de sistemas adesivos, do oxalato de potássio, ou a combinação de ambos, na permeabilidade dentinária
There is an ongoing trend to move away from classical multi-component bonding systems toward simplified adhesives. An immediate consequence of adhesive simplification is the intrinsic permeability to water that result from their increase in hydrophilicity. Current studies have demonstrated that single-step adhesives may act as semi-permeable membranes that a
Publicado em: 2005
-
7. Adaptação no método do peso da gota para determinação da tensão superficial: um método simplificado para a quantificação da CMC de surfactantes no ensino da química
The discussion based on surfactant cleaning action is commonly used in chemistry classrooms for the comprehension of theoretical concepts related to surface tension and micelle formation. The experimental quantification of surface tension of aqueous solutions of surfactants provides the practical instruments for this discussion. The present paper describes a
Química Nova. Publicado em: 2004-06
-
8. A TOPOLOGICAL APPROACH FOR MESH SIMPLIFICATION / UMA ABORDAGEM TOPOLÓGICA PARA SIMPLIFICAÇÃO DE MALHAS
Many applications, in mathematics, computer graphics, medical imaging, geophysics and others, have used the representation of solids by their boundary surface, usually polygonal meshes. Those meshes can represent, with high precision, the geometric properties of the boundary surface of solid and also store important topological surface properties as genus, b
Publicado em: 2003
-
9. Refino a seco de oleo de soja
The current chemical refining process (or conventional) of vegetable oils generates a great amount of liquid waste water, due to the usage of water in the process, mainly in the desacidification step, where the ftee fatty acids are neutralized through the addition of an aqueous solution ofNaOH, transforming these compounds in soaps (soapstock), oi! insoluble
Publicado em: 2000
-
10. Chinese hamster ovary cell mutants with multiple glycosylation defects for production of glycoproteins with minimal carbohydrate heterogeneity.
The production of glycoproteins with carbohydrates of defined structure and minimal heterogeneity is important for functional studies of mammalian carbohydrates. To facilitate such studies, several Chinese hamster ovary mutants that carry between two and four glycosylation mutations were developed. All of the lines grew readily in culture despite the drastic
-
11. Analysis of the Influence of Environmental Parameters on Clostridium botulinum Time-to-Toxicity by Using Three Modeling Approaches†
This study used the technique of waiting time modeling to analyze the combined effects of temperature, pH, carbohydrate, protein, and lipid on the time-to-toxicity of Clostridium botulinum 56A. Waiting time models can be used whenever the time to the occurrence of some event is the variable of interest. In the case of the time-to-toxicity data, the variable
American Society for Microbiology.
-
12. Reaching the global minimum in docking simulations: A Monte Carlo energy minimization approach using Bezier splines
The docking problem faces two major challenges: the global optimization of a multivariable function, such as the energy, and the ability to discriminate between true and false positive results, i.e., native from nonnative structures based on the input energy function. Among all energy evaluation tools, only a local energy-minimization method using an accurat
The National Academy of Sciences.