Atmosphere Dynamics
Mostrando 1-12 de 48 artigos, teses e dissertações.
-
1. CARBON STOCK GROWTH IN A SECONDARY ATLANTIC FOREST
RESUMO As florestas secundárias de Mata Atlântica possuem um papel importante no contexto das mudanças climáticas por atuarem como sumidouro de carbono da atmosfera. Entretanto, essas florestas podem se transformar em fonte de carbono com o aumento da mortalidade de árvores. O conhecimento dessa mudança é possível mediante inventários florestais con
Rev. Árvore. Publicado em: 28/11/2019
-
2. Methane emission induced by short-chain organic acids in lowland soil
ABSTRACT Methane (CH4) is the second major greenhouse gas after CO2, exerting a significant influence on the climate and the chemistry of the atmosphere. In lowland soil, acetate and H2/CO2 are the most important precursors of CH4 and formed from organic matter fermentation in an anaerobic environment, giving rise to short-chain organic acids (ethanoic, prop
Rev. Bras. Ciênc. Solo. Publicado em: 14/10/2019
-
3. Fertilization and Irrigation Affect Soil Carbon under Eucalyptus Plantation in the Cerrado
ABSTRACT This study aimed: i) to evaluate the influence of fertilization and irrigation management on eucalyptus plantations for soil carbon (C) dynamics; ii) to evaluate the impact of fertilization and irrigation management on eucalyptus plantations in the C allocation in depth compared to the Cerrado biome. This study was carried out in an eucalyptus plant
Floresta Ambient.. Publicado em: 22/08/2019
-
4. Hourly interaction between wind speed and energy fluxes in Brazilian Wetlands - Mato Grosso - Brazil
ABSTRACT Matter and energy flux dynamics of wetlands are important to understand environmental processes that govern biosphere-atmosphere interactions across ecosystems. This study presents analyses about hourly interaction between wind speed and energy fluxes in Brazilian Wetlands - Mato Grosso - Brazil. This study was conducted in Private Reserve of Natura
An. Acad. Bras. Ciênc.. Publicado em: 01/12/2016
-
5. INVESTIGATION OF IMPREGNATED ACTIVATED CARBON PROPERTIES USED IN HYDROGEN SULFIDE FINE REMOVAL
Abstract The effects of relative humidity (RH), carbon dioxide (CO2), methane (CH4), oxygen (O2) presence and gas hourly space velocity (GHSV) on H2S adsorption dynamics of KOH/CaO impregnated activated carbon are investigated in this study. X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray detector (SEM-EDX), thermogravimetr
Braz. J. Chem. Eng.. Publicado em: 2016-12
-
6. Modeling the reflection of Photosynthetically active radiation in a monodominant floodable forest in the Pantanal of Mato Grosso State using multivariate statistics and neural networks
ABSTRACT The study of radiation entrance and exit dynamics and energy consumption in a system is important for understanding the environmental processes that rule the biosphere-atmosphere interactions of all ecosystems. This study provides an analysis of the interaction of energy in the form of photosynthetically active radiation (PAR) in the Pantanal, a Bra
An. Acad. Bras. Ciênc.. Publicado em: 15/08/2016
-
7. Seasonality of soil water exchange in the soybean growing season in southern Brazil
The processes of water transfer in the soil-plant-atmosphere system are strongly affected by soil use and management. Differences in the dynamics of soil water transfer between no-tillage (NT) and conventional tillage (CT) practices during a soybean (Glycine max) growing season in southern Brazil were assessed in this study. All the water balance components
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-02
-
8. DECOMPOSIÇÃO DE RESÍDUOS CULTURAIS DE PLANTAS DE COBERTURA DE SOLO E EMISSÕES DE ÓXIDO NITROSO / COVER CROPS RESIDUES DECOMPOSITION AND NITROUS OXIDE EMISSIONS
The inclusion of summer cover crops (SCC) in the no-till system is an interesting alternative to promote the addition of elevated quantities of plant biomass and nitrogen (N) to the soil. The C and N dynamics during the SCC residue decomposition can control the nitrous oxide (N2O) fluxes to the atmosphere. This study was carried out to quantify the SCC resid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
-
9. Propagação guiada de ondas de VLF: aplicação ao estudo de fenômenos atmosféricos e naturais
Deep amplitude minima are observed in the daily records of Very Low Frequency (VLF, between 3 - 30 kHz) wave amplitudes. Amplitude minima are attributed to modal interference and modal conversion of waves propagating in the Earth - Ionosphere waveguide. The time of amplitude minima is related with the localization of the Terminator line and, therefore, is de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
-
10. Rate control system algorithm developed in state space for models with parameter uncertainties
Abstract researching in weightlessness above the atmosphere needs a payload to carry the experiments. To achieve the weightlessness, the payload uses a rate control system (RCS) in order to reduce the centripetal acceleration within the payload. The rate control system normally has actuators that supply a constant force when they are turned on. The developme
J. Aerosp. Technol. Manag.. Publicado em: 2011-12
-
11. Computation of air chemical equilibrium composition until 30000K - Part I
Abstract An algorithm was developed to obtain the air chemical equilibrium composition. The air was considered to be composed of 79% N2 and 21% O2, and the models are 5 chemical species, N2, O2, NO, N, O, and 7 chemical species, N2, O2, NO, N, O, NO+, e-, respectively. The air chemical equilibrium composition is obtained through the equilibrium constants met
J. Aerosp. Technol. Manag.. Publicado em: 2011-08
-
12. Study of the innovation management process in the development of a discontinuous product case : Motorola RAZR V3
This study will collaborate by bringing some detailed analysis and findings on a special case study of a discontinuous product development process, trying to answer how the discontinuous product development process takes place and the main factors that influence this process. Additionally, it tried to explore some explanations for the difficulties generally
Publicado em: 18/05/2010