Topological Characterization
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Synthesis and Molecular Modeling Study of Two Bromo-Dimethoxybenzaldehydes
This work describes the synthesis, molecular structure, and packaging of the compounds 6-bromo-2,3-dimethoxybenzaldehyde (6-BRB) and 5-bromo-2,3-dimethoxybenzaldehyde (5 BRB). Characterization in the solid-state was carried out by X-ray diffraction, and the analysis of the interactions was described by the Hirshfeld surface, which helps in understanding the
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Técnicas de processamento não linear de sinais aplicadas à investigação de limitações práticas do procedimento de ventilação mecânica não invasiva
Individuals with respiratory system dysfunctions or who are recovering from complex surgeries may have difficulty to sustain spontaneous breathing. The mechanical ventilation is a clinical procedure that supports ventilation until the patient is recovered. Noninvasive mechanical ventilation is especially remarkable as it can be used outside the hospital, in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/05/2011
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3. Caminhadas determinísticas em redes complexas aplicadas em visão computacional / Determinist walks on complex applied in computer vision
Complex networks have received a growing interest in several areas of knowledge. This growth is mainly due to its flexibility in modeling and simulating topological structures that appear in our daily life. In most cases, complex networks characterization are based on basic measurements such as average degree, hierarchical degree, clustering coefficient, amo
Publicado em: 2010
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4. Identification studies of possible targets for azomethinic or oxadiazolinic nitrocompounds with antifungal and anti-T. cruzi activity / Estudos de identificação de possíveis alvos para nitro-compostos azometínicos ou oxadiazolínicos com atividade antifúngica e anti-T. cruzi
This study had as objective the study of Tridimensional Quantitative Structure-Activity Relationships, 3D QSAR, and the identification of potential targets for 5-nitro-heterocyclic compounds with azomethynic or oxadiazolynic structures presenting dual antifungal and anti-T. cruzi bioactivity, aiming the discovery of new compounds to be used as possible drug
Publicado em: 2009
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5. The use of computational chemistry in the studies of chemical processes involved in electrospray ionization / A utilização da química computacional em processos químicos relacionados à ionização por electrospray
In recent decades, the development of atmospheric ionization techniques improved mass spectrometry, principally for characterization and structural elucidation of high-molecular weight compounds. The development of spray ionization was responsible for the spread of applications and studies of mass spectrometry, where the electrospray ionization is the most v
Publicado em: 2009
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6. O uso de ferramentas fractais e redes complexas no estudo da variabilidade pluviomÂetrica do Nordeste do Brasil
Brazil Northeastâs climate is usually described as semi-arid, characterized by hard dry seasons intermingled by hard rainfall seasons. Some areas of Northeast present annual pluviometric measure about 400 mm in mean, while in others the annual pluviometric measure is about 2000 mm. Rain events result from interplay of several physical phenomena, most of whi
Publicado em: 2007
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7. Topological studies of periodic orbits in the experimental Chua s circuit / Estudo topológico de órbitas periódicas no circuito experimental de Chua
We have studied the dynamical behavior of experimental time series obtained from a Chua s circuit by variation of two parameter control, $Delta R_1$ and $Delta R_2$. We investigated the chaotic and periodic behaviors of the circuit, analyzing temporal series around and inside of two periodic windows in the two-parameter space $(Delta R_1,Delta R_2)$. In the
Publicado em: 2006
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8. Sensibilidade as condições iniciais para endomorfisnos do intervalo
We consider sensitivity to initial conditions for endomorphisms f of the unit interval such that f is Lipschitzian. We begin by discussing general results on sensitivity and their relationship to structural stability. Next, a topological characterization for a certain class of unimodal endomorphisms is given. Finally, we exhibit a family {ft}, t ? (0, t0), o
Publicado em: 1986
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9. The renewal of the epidermis: a topological mechanism.
Using a topological approach, we study the dynamics of the basement membrane of the mammalian epidermis when basal cells detach or divide. A theoretical characterization of the steady state of the tissue, in very good agreement with experimental data, includes for the first time the division and the disappearance of cells in a two-dimensional random cellular
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10. Topological characterization of the essential Escherichia coli cell division protein FtsN.
Genetic and biochemical approaches were used to analyze a topological model for FtsN, a 36-kDa protein with a putative transmembrane segment near the N terminus, and to ascertain the requirements of the putative cytoplasmic and membrane-spanning domains for the function of this protein. Analysis of FtsN-PhoA fusions revealed that the putative transmembrane s
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11. Effective and robust plasmid topology analysis and the subsequent characterization of the plasmid isoforms thereby observed
Within the biopharmaceutical industry, recombinant plasmid DNA is used both as a raw material (e.g. in lentiviral and AAV vector production) as well as an active ingredient (e.g. in DNA vaccines). Consequently, many analytical laboratories are routinely involved with plasmid DNA topoisoform qualitative analysis and quantification. In order to reliably determ
Oxford University Press.
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12. HOP-1, a Caenorhabditis elegans presenilin, appears to be functionally redundant with SEL-12 presenilin and to facilitate LIN-12 and GLP-1 signaling
Mutant presenilins have been found to cause Alzheimer disease. Here, we describe the identification and characterization of HOP-1, a Caenorhabditis elegans presenilin that displays much more lower sequence identity with human presenilins than does the other C. elegans presenilin, SEL-12. Despite considerable divergence, HOP-1 appears to be a bona fide presen
The National Academy of Sciences of the USA.