Orbital Transference
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Análise do acoplamento entre o controle de atitude e de trajetória durante manobras orbitais de empuxo contínuo / Coupling analysis between attitude control and orbital maneuvering trajectory during continuous thrust
This work considers the coupling between attitude and orbit control used during an orbital transference which uses a continuous propulsive system capable impulse for a long time. The dynamic equations of movement are used to propagate the orbit and attitude states. It is studied some cases which comes from the effect of control during the orbital transferenc
Publicado em: 2010
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2. Radiative transference model to study sugarcane chlorophyll concentration using hyperspectral data / Modelos de transferência radiativa no estudo da concentração de clorofila em cana-de-açúcar, utilizando dados hiperespectrais
Regarding the strong connection between canopy leaf biochemical compound and spectral features, this research is aimed at: evaluating the effect of the senesced leaves on hyperspectral orbital data from sugarcane canopies; using PROSAILH modeling to point out less sensitive spectral indices to sugarcane canopy structure; and developing statistical models rel
Publicado em: 2009
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3. Estudo da reatividade de "alfa"-diazocetonas heterociclicas frente a enaminomas : obtenção de triazois
The reactions of 3-diazo-1,3-dihydro-1-methyl-2H-indol-2-one (11) with acyclic enaminones RCOCH=C(CH3)NRR (2) (2a: R= R= Me; R= H and 2e:R= Me; R = R= H) provided compound 16 (16a. 2-acetyl-1,6-dlmethylpyrazol-[1,5c]-quinazoline-5(6H)-one or 16b:1-acetyl-2,6-dimethylpyrazol-[1.5c]-quinazoline-5(6H)-one) in low yields, which is analogous to compound 10 formed
Publicado em: 1990
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4. Utilização de orbitais moleculares localizados no previsão de tensores polares atomicos
The similarities between the eletronic structure of the C-F bonds, in different molecules, were investigated makin use of the coeficients of the localized molecular orbitais (LMO) corresponding to this bond. The molecular orbital calculations were performed using the CNDO method and localization of the orbitals was based on the method of Edmiston and Ruedenb
Publicado em: 1987