Field Enhancement Factor
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. The use of genes for performance enhancement: doping or therapy?
Recent biotechnological advances have permitted the manipulation of genetic sequences to treat several diseases in a process called gene therapy. However, the advance of gene therapy has opened the door to the possibility of using genetic manipulation (GM) to enhance athletic performance. In such ‘gene doping’, exogenous genetic sequences are inserted in
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-12
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2. Computational Modeling of field emission tips / Modelamento computacional de ponteiras de emissão de campo
This work aims to study the electrical behavior of a field emission tip, shaped in the form hemisphere on a post, through computational resources (simulations). We chose the Ansys commercial software that uses the finite element methods in the analyses of the physical phenomena to obtain the electric field in the surface of the tip. After that, a computation
Publicado em: 2007
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3. Characterization of squaric acid and derived materials by enhanced Raman spectroscopy (use of high performance metallic SERS substrates) / Caracterização do ácido esquárico e materiais derivados por espectrocopia Raman intensificada (uso de substratos metálicos SERS de alto desempenho)
In this Thesis Surface-Enhanced Raman Scattering (SERS) and resonance Raman spectroscopy were used for monitoring the adsorption and faradaic behavior of squaric acid and its derived species. In addition, the charge transfer salt of squarate and tetrathiofulvalene and the copolymers of squarate and pyrroles were also studied. Another theme developed in this
Publicado em: 2005
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4. Physical modulation of intracellular signaling processes by locational regulation.
Recent observations in the field of signal transduction suggest that where a protein is located within a cell can be as important as its activity measured in solution for activation of its downstream pathway. The physical organization of the cell can provide an additional layer of control upon the chemical reaction networks that govern ultimately perceived s
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5. Phosphorus-31 NMR studies of E. coli ribosomes.
Phosphorus-31 nuclear magnetic resonance spectra, relaxation times and nuclear Overhauser (NOE) enhancement have been measured for E. coli ribosomes, subunits and rRNA. NOE and T1 experiments reveal that the phosphorus relaxation in this organelle is largely dipolar in origin. Moreover these results imply the presence of internal motion within the RNA chain
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6. Angular orientation of the stable tyrosyl radical within photosystem II by high-field 245-GHz electron paramagnetic resonance.
The 4 K 245-GHz/8.7-T electron paramagnetic resonance spectrum of the stable tyrosyl radical in photosystem II, known as TyrD., has been measured. Illumination at 200 K enhances the signal intensity of TyrD. by a factor of > 40 compared to the signal obtained from dark-adapted samples. This signal enhancement and the unusual line shape of the TyrD. resonance