Optical Storage Of Information
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Comparative anatomy and histochemistry of the leaf blade of two species of Artocarpus
Abstract Abstract: In Brazil, there are two species of Artocarpus that were introduced: Artocarpus altilis (Parkinson) Fosberg, known as fruta-pão, and Artocarpus heterophyllus Lam., known as jaca. Both are used as food and medicine. The objective of this work was to conduct a comparative anatomical and histochemical study between A. altilis and A. heteroph
An. Acad. Bras. Ciênc.. Publicado em: 14/02/2019
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2. Vulnerabilidade de películas cinematográficas: Manuseio, conservação, digitalização (desenvolvimento de CD-ROM)
A new option to preserve and publish collections in various kinds of themes and proportions came from the new technologies and the conversion from analog information to digital information. The project "Vulnerability of Cinematographic Films Handling, Conservation and Digitization has as subject the cinematographic film, physical and chemistry substrate for
Publicado em: 2007
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3. Desenvolvimento de processos de deposição de filmes filmes sobre substratos polimericos fotopolimerizdos / Development of process of deposition of thin films on photopolymerization polymeric substrats
A new era has begun all around the world. The quality of life and health depends more and more on the human capacity of resolving problems that are becoming longer and more complex day by day. As communication and globalization advance, time becomes scarcer and more precious. The semiconductor materials which are used to activate the logical functions, the h
Publicado em: 2007
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4. Estudo das propriedades de armazenamento óptico e grades de relevo em poliuretano derivado de azo-benzeno / Information optically storage and relief gratings study in material derivative of azo-benzene polyrethane
Polymers containing azobenzenic groups have been studied due to their applications on non-linear optics, surface relief gratings (SRG) and photoinduced anisotropy for optical storage. The reversal photoisomerization trans-cis-trans property of the azo group induces a molecular reorientation. In this work, cast films of na azobenzene derivative, the polyureth
Publicado em: 2003
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5. Desenvolvimento de fontes laser, espectroscopia de alta resolução e resfriamento e aprisionamento magneto-optico de atomos de calcio
In this work, we report on an experimental system for laser cooling and magneto-optical trapping of calcium atoms, the development of the laser sources for this system, and a spectroscopic analysis of calcium transitions in hollow cathode electric discharges. In the case of calcium, the most efficient optical transition for the atom motion manipulation by ra
Publicado em: 2002
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6. Reclassification and Documentation in a Medium-sized Medical Center Library: The MTST System in the Simultaneous Production of Catalog Cards and a Computer Stored Record
A project to recatalog and reclassify the book collection of the Bowman Gray School of Medicine Library utilizing the Magnetic Tape/Selectric Typwriter system for simultaneous catalog card production and computer stored data acquisition marks the beginning of eventual computerization of all library operations. A keyboard optical display system will be added
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7. Nonvolatile read-out molecular memory
A versatile molecule is described that performs as a nondestructible read-out optical-storage molecular memory. This molecular memory is composed of two distinct molecules that are chemically bonded to each other to form a single molecule with unique properties. One component is a photochromic fulgimide, and the other is a strongly fluorescing oxazine dy
National Academy of Sciences.
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8. Photochemical conversion of the O-intermediate to 9-cis-retinal-containing products in bacteriorhodopsin films.
The photochemical activity of the O-state was investigated in bacteriorhodopsin (BR) films containing wildtype BR at pH 6.5 in the presence of glycerol. The formation of a photoproduct of O with an absorption maximum at 490 nm and 9-cis-retinal configuration was found. This 490-nm product was named P and shows a slow thermal reaction into a compound with a m
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9. DNA condensation in two dimensions
We have found that divalent electrolyte counterions common in biological cells (Ca2+, Mg2+, and Mn2+ ) can condense anionic DNA molecules confined to two-dimensional cationic surfaces. DNA-condensing agents in vivo include cationic histones and polyamines spermidine and spermine with sufficiently high valence (Z) 3 or larger. In vitro studies show that
The National Academy of Sciences.
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10. Charge accumulation and photochemistry in leaves studied by thermoluminescence and delayed light emission
A major breakthrough in our understanding of how plants oxidize water to molecular O2 was the discovery by P. Joliot and co-workers that the O2 yield per flash, in a series of light flashes, oscillates with a periodicity of 4. This led to the concept by B. Kok and co-workers that these reactions involve accumulation of four positive charges in independent �
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11. Use of Gradient Plates To Study Combined Effects of Temperature, pH, and NaCl Concentration on Growth of Monascus ruber van Tieghem, an Ascomycetes Fungus Isolated from Green Table Olives
The effect of temperature, pH, and sodium chloride concentration on the growth of the Ascomycetes fungus Monascus ruber van Tieghem, the main spoilage microorganism during storage of table olives, was studied by using the gradient plate technique. Gradients of NaCl (3 to 9%, wt/vol) at right angles to gradients of pH (2 to 6.8) were prepared for the plates,
American Society for Microbiology.