81 research outputs found
Tachyon warm inflationary universe model in the weak dissipative regime
Warm inflationary universe model in a tachyon field theory is studied in the
weak dissipative regime. We develop our model for an exponential potential and
the dissipation parameter =constant. We describe scalar and
tensor perturbations for this scenario.Comment: 9 pages, accepted by European Physical Journal
Contagem bacteriana total do leite em diferentes sistemas de ordenha e de resfriamento
Biological aspects of the leafminer Liriomyza sativae (Diptera: Agromyzidae) on melon (Cucumis melo L.)
Small-scale solar magnetic fields
As we resolve ever smaller structures in the solar atmosphere, it has become
clear that magnetism is an important component of those small structures.
Small-scale magnetism holds the key to many poorly understood facets of solar
magnetism on all scales, such as the existence of a local dynamo, chromospheric
heating, and flux emergence, to name a few. Here, we review our knowledge of
small-scale photospheric fields, with particular emphasis on quiet-sun field,
and discuss the implications of several results obtained recently using new
instruments, as well as future prospects in this field of research.Comment: 43 pages, 18 figure
Physics of Solar Prominences: II - Magnetic Structure and Dynamics
Observations and models of solar prominences are reviewed. We focus on
non-eruptive prominences, and describe recent progress in four areas of
prominence research: (1) magnetic structure deduced from observations and
models, (2) the dynamics of prominence plasmas (formation and flows), (3)
Magneto-hydrodynamic (MHD) waves in prominences and (4) the formation and
large-scale patterns of the filament channels in which prominences are located.
Finally, several outstanding issues in prominence research are discussed, along
with observations and models required to resolve them.Comment: 75 pages, 31 pictures, review pape
Efeitos da luz, temperatura e estresse de água na germinação de sementes de Caesalpinia peltophoroides Benth. (Caesalpinoideae)
The portfolio allocation paradox: An investigation into the nature of a very strong but puzzling relationship
Qualidade da água, capacidade de suporte e melhor perÃodo para criação de peixes em tanques-rede no reservatório de Salto Caxias
Digestibilidade do fósforo em dietas como estratégia nutricional para redução de efluentes da tilapicultura
Sienogranitos leucocráticos do DomÃnio Macururé, Sistema Orogênico Sergipano, Nordeste do Brasil: Stock Glória Sul
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