Fine Structure Changing
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Decoherence and relaxation time in an ensemble of quantum dots / Tempos de relaxação e decoerencia em ensembles de pontos quanticos
Experimental measurements were carried out to determine the scales of the relaxation and decoherence time for the electronic spin as quantum bit. The structure of the exciton states was investigated with the objective to serve as intermediate states in the spin manipulation. The system studied for the implementation of the quantum computation is an ensemble
Publicado em: 2007
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2. SANDY BEACH MORPHODYNAMICS AND MACROBENTHIC COMMUNITIES IN TEMPERATE, SUBTROPICAL AND TROPICAL REGIONS - A MACROECOLOGICAL APPROACH
A comprehensive study involving 52 microtidal beaches spanning from reflective to dissipative states and located in tropical, subtropical and temperate regions in the Atlantic, Pacific and Indian oceans was carried out to unravel the relative roles of latitude and beach morphodynamics in determining beach macrobenthic species richness, abundance, biomass and
Publicado em: 2003
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3. Perdas colisionais devido ao processo de mudança de estrutura fina em uma armadilha magneto-óptica de rubídio / Fine structure changing collisional losses in a rubidium magneto-optical trap
We report the observation of trap-loss collisional rates due to fine structure changing collisions between cold and trapped 85Rb atoms. We have measured, by photoionization of the atomic fragments in 5P1/2 state originated in these collisions, the rates through the atoms leave the trap induced by this loss mechanism. We carried out experiments to determine t
Publicado em: 1999
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4. Human immunodeficiency virus type 1 DNA integration: fine structure target analysis using synthetic oligonucleotides.
The target specificity of DNA strand transfer mediated by human immunodeficiency virus type 1 integrase was examined in vitro with synthetic oligonucleotides. Although insertion occurred at most locations in the target, some sites were preferred over others by at least 15-fold. Changing the nucleotide sequence of the target changed the distribution of prefer
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5. The Control of the Controller: Molecular Mechanisms for Robust Perfect Adaptation and Temperature Compensation
Organisms have the property to adapt to a changing environment and keep certain components within a cell regulated at the same level (homeostasis). “Perfect adaptation” describes an organism's response to an external stepwise perturbation by regulating some of its variables/components precisely to their original preperturbation values. Numerous examples
The Biophysical Society.
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6. The fine structure of the human ovarian vein.
The human ovarian vein is of particular interest as an adult vessel which changes with the different phases of reproductive life. At the ultrastructural level we have characterised the endothelium, vascular smooth muscle and autonomic innervation of the human ovarian vein. Transmission electron micrographs were prepared from surgical specimens of the human o
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7. Receptors in the bill of the platypus.
1. Afferent responses were recorded from filaments of the trigeminal nerve in each of two platypuses (Ornithorhynchus anatinus) anaesthetized with alpha-chloralose. All receptive fields were located along the lateral border of the upper bill. Discrete receptive fields could be identified as belonging to two distinct classes of sensory receptor. 2. The most p