Rotation Sequence
Mostrando 13-24 de 82 artigos, teses e dissertações.
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13. Estrutura e propriedades elásticas das fases alpha e gama do ZrW2O8
The crystalline structure and some elastic properties of the alpha and gamma phases of zirconium tungstate, ZrW2O8, were calculated according to Density Functional Theory using the B3LYP functional (DFT/B3LYP). The structure of alpha ZrW2O8, was optimized at different pressures and its elastic constants were estimates. The interatomic iterations, ranked in t
Publicado em: 2007
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14. CO-SITE MICROSCOPY: NEW POSSIBILITIES IN THE ORE CHARACTERIZATION / MICROSCOPIA CO-LOCALIZADA: NOVAS POSSIBILIDADES NA CARACTERIZAÇÃO DE MINÉRIOS
Computer-controlled microscopes with digital image acquisition and analysis led to the creation of a new field, called Digital Microscopy. Digital Microscopy not only allows a certain degree of automation but also has brought new possibilities to microstructural characterization. One of these new and promising possibilities is Co- Site Microscopy, that links
Publicado em: 2007
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15. Atividade e diversidade da biomassa microbiana em diferentes sistemas de manejo do solo e de culturas no norte do Estado do Parana / Activity and diversity of microbial biomass under different soil and crop management systems in the north of the state of Parana (Brazil)
The microbial biomass carbon (MB-C) and nitrogen (MB-N), basal respiration and metabolic quotient (qCO2) were evaluated in a Rhodic Eutrudox of the North Region of the State of Paraná under different soil and crop management systems. The experimental area was established in 1988/1989 at the experimental station of Embrapa Soja, Londrina, Paraná, and consis
Publicado em: 2005
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16. Arbuscular mycorrhizal community in a permanent pasture and development of species-specific primers for detection and quantification of two AM fungi
Arbuscular mycorrhizal (AM) fungi are a group of symbionts that occupy different niches during their life cycle in roots and in the rhizosphere. They occur in soil as spores, hyphae and other propagules such as colonised root fragments. During the interaction with the plant roots a bidirectional transfer of mineral nutrients and carbon occurs, frequently ens
Publicado em: 2005
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17. Petrogenese das intrusões graniticas compostas de Teofilandia e Barrocas, Greenstone Belt do Rio Itapicuru, Bahia, Brasil
The Rio Itapicuru Greenstone Belt (RIGB) is a Paleoproteozoic sequence situated in the northern portion of the São Francisco Craton, Bahia state, Brazil. Overlying a basement consisting of gnaisse and migmatites, this volcanic-sedimentary belt is intruded by several granitoid intrusions of different chemical compositions. Two of the most important intrusive
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2002
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18. Daily birth numbers in Passo Fundo, South Brazil, 1997-1999: trends and periodicities
Between October 6, 1997 and April 30, 1999, 5011 births (mean: 8.76 per day) were registered in the city of Passo Fundo, South Brazil. The sequence of 572 daily birth numbers was not random (iteration test). Neyman distribution (m = ¥) showed the best fit. Clusters of days with higher birth numbers alternated with days with low numbers of births. Periodogra
Braz J Med Biol Res. Publicado em: 2002-08
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19. Atividade eletrica dos musculos reto do abdome e obliquo externo na ação postural e respiratoria de individuos normais e portadores de distrofia muscular de Duchenne
The Progressive Muscular Dystrophy of Duchenne s (DMD) is a genetic disease and it is characterized for the gradual degeneration of the skeletal musculature and leads to deterioration of pulmonary and postural function and, also cause inabilities to the patients develop its activities of the daily life, having a necessity constant of improvement of the physi
Publicado em: 2002
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20. Plataforma de ensaios para acionamento e controle de motores usando DSPS
This work presents a hardware and software integrated environment for study and development of drivers and controls for induction motors. In the platform setup two Texas Instruments DSPs (Digital Signal Processors) has been used, in a master-slave conguration: the TMS320C6201 DSP, contained in a manufacturers evaluation board inserted in a PC, and the TMS320
Publicado em: 2002
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21. Ensino/Aprendizagem da rotação na 5 série: um estudo comparativo em relação ao material utilizado
Starting from the premise that isometries should be included in the geometry curriculum, this research proposes that we should begin with rotations at 5th grade, by means of strategies of using easily obtainable manipulatives. This investigation compares the achievements of two groups of subjects along a sequence of activities that took place in the classroo
Publicado em: 2001
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22. Geometry and kinematics of experimental antiformal stacks
Sandbox experiments with different boundary conditions demonstrate that antiformal stacks result from a forward-breaking thrust sequence. An obstacle blocks forward thrust propagation and transfers the deformation back to the hinterland in a previously formed true duplex. In the hinterland, continued shortening causes faults to merge toward the tectonic tran
Anais da Academia Brasileira de Ciências. Publicado em: 2000-06
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23. Estudo de difração de raios-x a alta resolução da beta-lactoglobulina bovina
Beta-lactoglobulin (BLG), a very abundant protein found in several species of mammals belongs to the lipocalin family. Under physiological conditions, BLG is a dimmer of 162 aminoacids per monomer, with a molecular mass of approximately 18kDa in each subunit. Although BLG has important physicochemical properties, its biological function remains unclear. BLG
Publicado em: 1999
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24. Metodologia para analise cinematica da corrida
: In order to analyze human movement in a quantitative way, the human eye is not always the most adequate instrument. It is necessary to keep the sequence of images of the analized phenomenon for a certain time, which is not possible for information about movement, which can be stored, becoming available for analysis. To these discrete data, we associate a c
Publicado em: 1993