Branching Processes
Mostrando 1-12 de 57 artigos, teses e dissertações.
-
1. JUDD-OFELT ANALYSIS OF Tb3+ AND UPCONVERSION STUDY IN Yb3+-Tb3+ CO-DOPED CALIBO GLASSES
We report on the study of the spectroscopic properties in Ytterbium-Terbium (Yb3+-Tb3+) co-doped calcium lithium borate (CaLiBO) glasses, with the study’s focus being on the upconversion process. Intensity parameters Ωλ for CaLiBO:Tb3+ are determined by the Judd-Ofelt method to be Ω2 = 15.5 × 10-20 cm2, Ω4 = 1.90 × 10-20 cm2 and Ω6 = 3.69 × 10-20 c
Quím. Nova. Publicado em: 2020-02
-
2. The PIN1 family gene PvPIN1 is involved in auxin-dependent root emergence and tillering in switchgrass
Abstract Switchgrass (Panicum virgatum L.; family Poaceae) is a warm-season C4 perennial grass. Tillering plays an important role in determining the morphology of aboveground parts and the final biomass yield of switchgrass. Auxin distribution in plants can affect a variety of important growth and developmental processes, including the regulation of shoot an
Genet. Mol. Biol.. Publicado em: 2016-03
-
3. Simulação Computacional e Análise de um Modelo Fenotípico de Evolução Viral. / Computer Simulation and Analysis of a Phenotypic Model of Viral Evolution
A large amount of viruses of medical importance such as HIV, respiratory syncytial virus, the hepatitis C virus, influenza A (H1N1) and polio virus, has RNA genome. These viruses exhibit extremely high mutational rate, fast replicative kinetics, large population of particles and high genetic diversity. Manifested during the infectious process, these features
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/01/2011
-
4. O vértice D*Dp usando as regras de soma da QCD / The D*Dp vertex using the QCD sum rules
The particle physics have been studying topics like the Quark-Gluon Plasma (QGP), Higgs boson and dark matter, which require experiments in heavy-ion collisions. Therefore, accelerators capable of generate high energy particle beams are necessary and may generate new physics. When new data arise in the laboratories, new processes are necessary to explain thi
Publicado em: 2010
-
5. Asthma: where is it going?
Asthma is characterized by reversible airway obstruction, airway hyperresponsiveness, and airway inflammation. Although our understanding of its pathophysiological mechanisms continues to evolve, the relative contributions of airway hyperresponsiveness and inflammation are still debated. The first mechanism identified as important for asthma was bronchial hy
Brazilian Journal of Medical and Biological Research. Publicado em: 20/08/2008
-
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
-
7. Processos de partÃculas sem colisÃes
We consider a class of particle processes with discrete time and a finite number of types of particles, which we call Processes Without Collisions or PWC for short. At every time step, any particle may die or transform itself into one or several particles of any types with certain probabilities, but there are no collisions, that is, every transformation appl
Publicado em: 2007
-
8. The branching rate of the random Olami-Feder-Christensen model with a generic coordination number
In this paper we review and discuss some fundamental aspects of the random version of the Olami-Feder- Christensen model, and its relevance for the understanding of self-organized criticality (SOC). We review the universal character of the exponent or
Brazilian Journal of Physics. Publicado em: 2003-09
-
9. Processos de polimerização e transição de colapso em polímeros ramificados. / Polymerization processes and collapse transition of branched polymers.
The phase diagram and the tricritical point of a collapsing lattice animal are studied through an extended series expansion of the isothermal compressibility KT on a square lattice. As a function of the variables x (fugacity) and y = e1/T (T is the reduced temperature), this series KT is investigated using the partial differential approximants technique. The
Publicado em: 1997
-
10. WAVE BRANCHING PROCESSES AND INVARIANT IMBEDDING, I
-
11. DIRECT PRODUCT BRANCHING PROCESSES AND RELATED MARKOV CHAINS*
-
12. GENERATING FUNCTIONS AND THE SEMIGROUP THEORY OF BRANCHING MARKOV PROCESSES*