Branching Structures
Mostrando 1-12 de 78 artigos, teses e dissertações.
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1. TNF-alpha increases angiogenic potential in a co-culture system of dental pulp cells and endothelial cells
Abstract We recently demonstrated that a co-culture system of human umbilical vein endothelial cells (HUVECs) and human dental pulp stem cells (hDPSCs) could enhance angiogenesis ability in vitro. However, whether tumor necrosis factor α (TNF-α) could promote blood vessel formation during pulp regeneration remained unknown. The aim of this study was to inv
Braz. oral res.. Publicado em: 28/10/2019
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2. Synflorescence morphology of species of Typha L. (Typhaceae): anatomical and ontogenetic bases for taxonomic applications
ABSTRACT The inflorescence of plants of the genus Typha L. consists of a polytelic system with the fertile region containing staminate flowers in the terminal portion and pistillate flowers in the basal portion. Although some useful morphological information has been provided to characterize species of the genus, various divergent typologies have arisen due
Acta Bot. Bras.. Publicado em: 07/10/2019
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3. Structure-flammability relationship study of phosphoester dimers by MLR and PLS
Abstract Polyphosphonates and polyphosphates having good flame retardancy represent an important class of organophosphorus based polymer additives. In this analysis the flammability of 28 previously synthesized polyphosphoesters, modelled as dimmers, was explored using the multiple linear regression (MLR) and Partial Least Square (PLS) methodology. The stati
Polímeros. Publicado em: 14/06/2016
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4. Modelo de múltiplas escalas para a dinâmica de crescimento de estruturas biológicas ramificadas / Multiscale model for the dynamics of growth of biological branching structures
The characterization of fractals and the search for general rules and mechanisms for description of non-linear phenomena brought the attention of the scientific community to the interdisciplinary area of complex systems. Complex phenomena can be found in almost every branch of natural science. One example is the simulation using cellular automata of self-org
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/07/2011
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5. Dois problemas em análise de formas de estruturas de ramificação / Two Problems in Shape Analysis of Branching Structures
O presente texto descreve métodos e apresenta resultados do projeto de pesquisa de mestrado intitulado "Dois Problemas em Análise de Formas de Estruturas de Ramificação". Ambos os problemas abordados estão relacionados às sub-áreas da Análise de Formas denominadas Caracterização e Descrição de Formas. O primeiro problema consiste na investigaçã
Publicado em: 2008
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6. STUDY OF HMS-PP (HIGH MELT STRENGTH POLYPROPYLENE) BEHAVIOUR UNDER CONDITIONS OF ENVIRONMENTAL AND ACCELERATED DEGRADATION / Estudo do comportamento de HMS-PP (polipropileno com alta resistência do fundido) sob condições de degradação ambiental e acelerada
The behaviour study of polymeric materials concerning the weathering (heat, uv light, moisture, high-energy radiation, chemical attack and pollutants) is of fundamental importance to assess the stability of the material. The thermoplastics evaluated were the stabilized and not stabilized HMS-PP synthetized by gamma (g) irradiation under acetylene atmosphere.
Publicado em: 2008
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7. THE COST OF THE PROCESSING OF RELATIVE CLAUSES: AN EXPERIMENTAL STUDY WITH RESUMPTIVE RELATIVES IN BRAZILIAN PORTUGUESE / O CUSTO DE PROCESSAMENTO DE ORAÇÕES RELATIVAS: UM ESTUDO EXPERIMENTAL SOBRE RELATIVAS COM PRONOME RESUMPTIVO NO PORTUGUÊS BRASILEIRO
This dissertation deals with the processing of relative clauses, and focuses on resumptive structures in Brazilian Portuguese (BP). It is grounded on a theory of language processing and acquisition that aims at reconciling a minimalist view of language with psycholinguistic models of sentence processing. The working hypothesis of this study is that there is
Publicado em: 2008
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8. Investigação experimental da copolimerização de estireno divinilbenzeno (DVB) via radical livre controlada por radicais nitroxido (NMRP) / Nitroxide mediated radical copolymerization of styrene and divinylbenzene (DVB)
Living free radical polymerization, also known as "pseudo-living radical polymerization" has received more and more attention as a technique for the production of polymers with micro structure highly controlled (narrow molecular weights distributions and polydispersity index close to one). Conventional routes to obtain polymer like this have been ionic polym
Publicado em: 2008
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9. Structure of a population of Esenbeckia leiocarpa Engl. (Rutaceae) in a seasonal semidecidual forest in southeast Brazil / Estrutura de uma população de Esenbeckia leiocarpa Engl. (Rutaceae) numa floresta estacional semidecidua no Sudeste do Brasil
The present study investigated the structure of a population of Esenbeckia leiocarpa, popularly known as ?guarantã?, a canopy species, not pioneer and common in the region studied. The study was carried out in an area of 3.2 ha of seasonal semi-deciduous forest in Campinas ? SP. We randomly installed 50 plots of 10 x 10 m, in a total of 0.5 ha. In each 100
Publicado em: 2005
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10. Differential tubulogenic and branching morphogenetic activities of growth factors: implications for epithelial tissue development.
At least two kidney epithelial cell lines, the Madin-Darby canine kidney (MDCK) and the murine inner medullary collecting duct line mIMCD-3, can be induced to form branching tubular structures when cultured with hepatocyte growth factor (HGF) plus serum in collagen I gels. In our studies, whereas MDCK cells remained unable to form tubules in the presence of
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11. Self-similar self-avoiding structures: Models for polymers
The hierarchy of m,n-self-similar self-avoiding structures on a lattice is introduced as a model for linear and branched polymers. The self-similarity condition permits exact solutions that use a generating-function renormalization procedure with full accounting for volume exclusion. Illustrative results are given for the 1,2-linear-chain model and for the 1
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12. Ultrastructure of lipopolysaccharide isolated from Thermoplasma acidophilum.
The fine structure of lipopolysaccharide isolated from Thermoplasma acidophilum was examined by electron microscopy. Negative staining of the lipopolysaccharide revealed long, ribbon-like structures with some branching. The average width of the lipopolysaccharide ribbons was 5 nm. Treatment of the lipopolysaccharide with 0.5% sodium dodecyl sulfate resulted