Channel Order Determination
Mostrando 1-12 de 13 artigos, teses e dissertações.
-
1. Estudo teórico sobre meios de determinação de Áreas de Preservação Permanente (APPs) marginais aos cursos d água através da análise de fatores ambientais no âmbito da bacia hidrográfica: enfoque geomorfológico / Theorical study about the determination of the Permanent Preservation Areas (PPAs) marginal to the water courses through the analysis of the environmental factors in the context of the watershed: geomorphology focus
The Permanent Preservation Areas (PPAs) were imposed by New Brazilian Forest Code in order to ensure the stability of the landscape, water and biotic features. Among the types of PPAs are those which protect the marginal portions of the watercourses, which are currently focuses of environmental conflicts, given its regulatory power that overly restricts the
Publicado em: 2010
-
2. Medidas de corrente contínua em raios nuvem-solo negativos naturais no Brasil: Desenvolvimento de instrumentação e primeiros resultados / Measuring of continuing currents in natural negative cloud-to-ground lightning on Brasil: development of equipment and first results
This work presents the first quantitative study of the continuing current (Icc) in negative cloud-to-ground flashes (-CG) in Brazil. The Icc is a low intensity current that follows some return strokes in -CG flashes. Their long durations result in large charge transfers that are responsible for most lightning damage associated with thermal effects. In this s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/04/2009
-
3. Medidas de corrente contínua em raios nuvem-solo negativos naturais no Brasil: Desenvolvimento de instrumentação e primeiros resultados / Measuring of continuing currents in natural negative cloud-to-ground lightning on Brasil: development of equipment and first results
This work presents the first quantitative study of the continuing current (Icc) in negative cloud-to-ground flashes (-CG) in Brazil. The Icc is a low intensity current that follows some return strokes in -CG flashes. Their long durations result in large charge transfers that are responsible for most lightning damage associated with thermal effects. In this s
Publicado em: 2009
-
4. Theoretical-experimental study of the drain current transient and generation lifetime in SOI MOSFETs technologies. / Estudo teórico-experimental do transitório da corrente de dreno e do tempo de vida de geração em tecnologias SOI MOSFETs.
This work presents a study of drain current switch-off transients and extraction methods of the generation lifetime in partially depleted SOI nMOSFET transistors of single gate, double gate and triple gate FinFETs. This study is accomplished through two-dimensional numerical simulations and compared with experimental data of devices fabricated in the IMEC (I
Publicado em: 2008
-
5. MÃtodos estatÃsticos multi-percursos para a identificaÃÃo cega de canais da fonte de aplicaÃÃes Ãs comunicaÃÃes sem fio / High-order statistical methods for blind channel identification and source detection with applications to wireless communications
Les systÃmes de tÃlÃcommunications modernes exigent des dÃbits de transmission trÃs ÃlevÃs. Dans ce cadre, le problÃme dâidentification de canaux est un enjeu majeur. Lâutilisation de techniques aveugles est dâun grand intÃrÃt pour avoir le meilleur compromis entre un taux binaire adÃquat et la qualità de lâinformation rÃcupÃrÃe. En utilis
Publicado em: 2008
-
6. Parâmetros de resistência do solo para dimensionamento de sistemas de drenagem em estradas não pavimentadas / Parameters of soil resistance for drainage systems dimensioning in non-paved roads
This work was developed mainly aiming the determination of the erodibility and the critical shear stress in non-paved roads, focusing on the reduction of the eminent risks of occurring erosion in these roads, based upon a drainage system dimensioning using local resistance values. In order to achieve these values a yield simulator was built, which model cons
Publicado em: 2008
-
7. MODELO GENÉRICO PARA O AMBIENTE DE COMÉRCIO ELETRÔNICO ENTRE EMPRESAS - B2B / A GENERIC MODEL FOR THE B2B ENVIRONMENT
The Internet-based Electronic Commerce environment for interrelations among companies, known as B2B, is very complex. In order to operate in it, a tool is required to provide an integrated view of the diverse elements that interact in this business environment, facilitate its comprehension and support decision taking and the elaboration of strategies that ad
Publicado em: 2004
-
8. Dinâmica de populações de cianobactérias em reservatório eutrofizado no semi-árido nordestino brasileiro.
The Armando Ribeiro Gonçalves reservoir, located in the semi-arid of the Rio Grande do Norte (06o08 S ; 37o 07 W), in Northeast Brazil, represents 68% of the total surface water accumulated in the state. The reservoir, with maximum volumetric capacity of 2.4 x 109, provides 400 thousands habitants and also is destined to irrigation, leisure and fishing. It
Publicado em: 2003
-
9. Analise do hidrograma unitario geomorfologico e regionalização do parametro de velocidade
The greatest part of problems about the determination of a hydrogram project occurs on non-monitored basins and therefore without data to permit the co-relation of the rain with the exit hydrogram. This problem can be overcome through the transformation of the rain into water evacuation by a mathematical model generated from basins with similar characteristi
Publicado em: 2001
-
10. Transporte de chumbo e metais associados no Rio Ribeira do Iguape, São Paulo, Brasil
The objective of the present study is to clear some aspects of the transport of Lead and associated metais by suspended particulate matter along the Ribeira de Iguape River, in the southeastern region of the state of São Paulo. Literature data were taken into account, as well as findings gathered trom studies of sediments collected in stations at different
Publicado em: 1997
-
11. Inversion of Markov processes to determine rate constants from single-channel data.
The determination of rate constants from single-channel data can be very difficult, in part because the single-channel lifetime distributions commonly analyzed by experimenters often have a complicated mathematical relation to the channel gating mechanism. The standard treatment of channel gating as a Markov process leads to the prediction that lifetime dist
-
12. A photochemical approach to the lipid accessibility of engineered cysteinyl residues
Ordinary electrophilic reagents react too slowly in a nonpolar environment to be useful for the determination of the accessibility to lipid of continuous stretches of residues mutated to cysteine. By contrast, photoactivated 5-iodonaphthyl-1-azide (INA) reacted readily with 2-mercaptoethanol and dodecanethiol in nonpolar solvents and in liposomes. Continuous
The National Academy of Sciences.