1. Gradient pattern analysis of structural dynamics: application to molecular system relaxation

This paper describes an innovative technique, the gradient pattern analysis (GPA), for analysing spatially extended dynamics. The measures obtained from GPA are based on the spatio-temporal correlations between large and small amplitude fluctuations of the structure represented as a dynamical gradient pattern. By means of four gradient moments it is possible

Brazilian Journal of Physics. Publicado em: 2003-09

2. Análise espectral de padrões-gradiente de séries temporais curtas / Gradient spectral analysis for short time series

With the modernization of data collecting technology, in the time series format, new methodological challenges, for analyzing and interpreting variability patterns, have been growing. In general, such challenges are due to several collecting data problems when they are under extreme environmental variations, data satellite transmission and other inherent ins

Publicado em: 2008

3. Análise espectral de padrões-gradiente de séries temporais curtas / Gradient spectral analysis for short time series

Com a modernização da tecnologia para coleta de dados, na forma de séries temporais, novos desafios metodológicos, para análise e interpretação dos padrões de variabilidade medidos, são crescentes. Em geral, desafios analíticos e interpretativos ocorrem devido aos diversos problemas de coleta de dados, quando sujeitos às variações extremas no me

Publicado em: 2008

4. Distribution and diversity of leaf litter ants (Hymenoptera: Formicidae) along an elevational gradient in the Parque Estadual da Serra do Mar - Núcleo Picinguaba, São Paulo, Brazil / Distribuição e diversidade de formigas de serapilheira (Hymenoptera: Formicidae) ao longo de um gradiente elevacional no Parque Estadual da Serra do Mar-Núcleo Picinguaba, São Paulo, Brasil

Aiming to investigate the influence of the elevation in topography on the myrmecological leaf litter fauna and to verify if there is a richness pattern for the investigated gradient, I studied the distribution of these ants along an elevational gradient in the Núcleo Picinguaba of the Serra do Mar State Park, Ubatuba, SP. For this, I adopted six elevational

Publicado em: 2008

5. Ambiente gráfico flyby para análise de padrões gradientes de silício poroso / Development of flyby environment for gradient pattern analysis with application to the study of porous silicon samples

A pesquisa em silício poroso, realizada desde 1956, teve um avanço muito importante em 1990 com a descoberta da propriedade de fotoluminescência do material. A partir daí, inúmeras técnicas de caracterização vêm sendo empregadas para uma melhor compreensão dessa estrutura e de suas propriedades, tanto do ponto de vista básico, quanto de suas aplic

Publicado em: 2004

6. Ambiente gráfico flyby para análise de padrões gradientes de silício poroso / Development of flyby environment for gradient pattern analysis with application to the study of porous silicon samples

A pesquisa em silício poroso, realizada desde 1956, teve um avanço muito importante em 1990 com a descoberta da propriedade de fotoluminescência do material. A partir daí, inúmeras técnicas de caracterização vêm sendo empregadas para uma melhor compreensão dessa estrutura e de suas propriedades, tanto do ponto de vista básico, quanto de suas aplic

Publicado em: 2004

7. Ambiente gráfico flyby para análise de padrões gradientes de silício poroso / Development of flyby environment for gradient pattern analysis with application to the study of porous silicon samples

A pesquisa em silício poroso, realizada desde 1956, teve um avanço muito importante em 1990 com a descoberta da propriedade de fotoluminescência do material. A partir daí, inúmeras técnicas de caracterização vêm sendo empregadas para uma melhor compreensão dessa estrutura e de suas propriedades, tanto do ponto de vista básico, quanto de suas aplic

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/05/2004

8. Temperature Gradient Gel Electrophoresis Analysis of 16S rRNA from Human Fecal Samples Reveals Stable and Host-Specific Communities of Active Bacteria

The diversity of the predominant bacteria in the human gastrointestinal tract was studied by using 16S rRNA-based approaches. PCR amplicons of the V6 to V8 regions of fecal 16S rRNA and ribosomal DNA (rDNA) were analyzed by temperature gradient gel electrophoresis (TGGE). TGGE of fecal 16S rDNA amplicons from 16 individuals showed different profiles, with so

American Society for Microbiology.

9. Sequence heterogeneities of genes encoding 16S rRNAs in Paenibacillus polymyxa detected by temperature gradient gel electrophoresis.

Sequence heterogeneities in 16S rRNA genes from individual strains of Paenibacillus polymyxa were detected by sequence-dependent separation of PCR products by temperature gradient gel electrophoresis (TGGE). A fragment of the 16S rRNA genes, comprising variable regions V6 to V8, was used as a target sequence for amplifications. PCR products from P. polymyxa

10. Highly Purified Human Immunodeficiency Virus Type 1 Reveals a Virtual Absence of Vif in Virions

The vif gene of human immunodeficiency virus type 1 (HIV-1) is essential for the productive infection of primary blood-derived lymphocytes, macrophages, and certain human T-cell lines. It has been shown that Vif is associated with HIV-1 virions purified by sucrose density-equilibrium gradient analysis. However, the specificity of Vif incorporation into virio

American Society for Microbiology.

11. Monoclonal antibody-aided characterization of cellular p220 in uninfected and poliovirus-infected HeLa cells: subcellular distribution and identification of conformers.

A monoclonal antibody directed against the Mr-220,000 subunit (p220) of the mRNA cap-binding complex has been prepared and used to analyze the sucrose gradient sedimentation and subcellular location of p220 and its poliovirus-induced cleavage products. The antibody reacted with p220 on immunoblots of cell lysates from uninfected cells, but only with several

12. Profiling of complex microbial populations by denaturing gradient gel electrophoresis analysis of polymerase chain reaction-amplified genes coding for 16S rRNA.

We describe a new molecular approach to analyzing the genetic diversity of complex microbial populations. This technique is based on the separation of polymerase chain reaction-amplified fragments of genes coding for 16S rRNA, all the same length, by denaturing gradient gel electrophoresis (DGGE). DGGE analysis of different microbial communities demonstrated