Light Filters
Mostrando 1-12 de 81 artigos, teses e dissertações.
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1. Proteins and Peptides at the Interfaces of Nanostructures
Abstract: The present review focuses on the proteins and peptides at the interfaces of nanostructured metals and semiconductors as a result of their use in synthesis in-situ and functionalization of nanostructures. We start the review with an introduction about the peculiar properties of nanostructured materials and their applications. In the following, the
An. Acad. Bras. Ciênc.. Publicado em: 25/11/2019
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2. Comparing the Performance of Ground Filtering Algorithms for Terrain Modeling in a Forest Environment Using Airborne LiDAR Data
ABSTRACT The aim of this study was to evaluate the performance of four ground filtering algorithms to generate digital terrain models (DTMs) from airborne light detection and ranging (LiDAR) data. The study area is a forest environment located in Washington state, USA with distinct classes of land use and land cover (e.g., shrubland, grassland, bare soil, an
Floresta Ambient.. Publicado em: 01/02/2018
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3. Evaluation of Eye Protection Filters Used with Broad-Spectrum and Conventional LED Curing Lights
Resumo A alta irradiância e diferentes espectros de luz emitidos por aparelhos fotopolimerizadores (Fp) podem causar danos oculares. Este estudo avaliou a capacidade de 15 filtros de proteção ocular em bloquear a luz prejudicial de um Fp convencional (HP-3M ESPE) e outro de largo espectro (Valo, Ultradent). Utilizando sensor anterior do equioamento MARC-P
Braz. Dent. J.. Publicado em: 2017-02
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4. PROTETORES SOLARES À BASE DE FILTROS INORGÂNICOS: DESENVOLVIMENTO E CARACTERIZAÇÃO
The inorganic sunscreens represented mainly by titanium dioxide (TiO2) and Zinc Oxide (ZnO), were classified as inert particles, therefore, they are pointed out as the best way to protect the skin against the harmful effects of ultraviolet radiation (UV). However, recent studies suggest that these particles have several stability problems that may lead to a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/01/2012
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5. Estudo de viabilidade de integração de micro-lâmpadas incandescentes com filtros interferenciais. / Study of viability of integration of incandescent micro-lamps with interferometric filters.
In the present work was realized a study of the viability of integrating two optical devices: incandescent micro-lamps and interferometric filters with the intention of obtaining a single device with specific characteristics. The fabrication of these optical devices was made using dielectric materials, obtained by plasma-enhanced chemical vapor deposition (P
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/04/2011
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6. Estudo da dinâmica de acréscimo e perda de massa na estrela T Tauri clássica V354 Mon.
The main goal of this work is to characterize the mass accretion and ejection processes of the classical T Tauri star V354 Mon, a member of the young stellar cluster NGC 2264. In March 2008, photometric and spectroscopic observations of this object were obtained simultaneously with the CoRoT satellite, the SOPHIE échelle spectrograph at the Observatoire de
Publicado em: 2010
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7. Development of an optical fluorescence imaging system for medical use / Desenvolvimento de um sistema por imagem de fluorescência óptica para uso médico-odontológico
Optical fluorescence has been applied to several medical areas, as to monitor drug degradation and cancer detection, due to its high sensitivity, simplicity and fast response. Non-invasive and non-destructive assessment of tissues using this technique is very attractive for clinical diagnosis. Hence, the aim of was the development of an optical fluorescence
Publicado em: 2010
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8. A simple method to measure cell viability in proliferation and cytotoxicity assays
Resazurin dye has been broadly used as indicator of cell viability in several types of assays for evaluation of the biocompatibility of medical and dental materials. Mitochondrial enzymes, as carriers of diaphorase activities, are probably responsible for the transference of electrons from NADPH + H+ to resazurin, which is reduced to resorufin. The level of
Brazilian Oral Research. Publicado em: 2009-09
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9. In vitro propagation of Prunus spp. rootstocks. / Propagação in vitro de porta-enxertos do gênero Prunus spp
nus. To obtain peach plants that produce fruits of high quality and to obtain high productivity, it is necessary a modern and tecnified nursery plant production. The objective for this study was to establish an appropriated and low cost methodology for production of nursery Prunus plants. The experiments were carried out at the Faculdade de Agronomia Eliseu
Publicado em: 2008
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10. Impact of artificial lighting on the ecosystem / Influência da iluminação artificial sobre a vida silvestre: técnicas para minimizar os impactos, com especial enfoque sobre os insetos
The impact of light pollution on man and on the ecosystem is a rising concern among ecologists however, in the same time the human population is demanding more lighting for safety and comfort. In order to satisfy human lighting needs with a minimum impact on the ecosystem, manly on insects, we tested commercial equipments using different types of lights and
Publicado em: 2008
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11. Ecofisiologia de Cyatheaceae (Monilophyta): fenologia, banco de esporos, anatomia e germinaÃÃo
The objective of this study was: to define the fenolÃgico standard of the species of Cyatheaceae, to evaluate the formation of the bank of spores of Cyatheaceae in the of Atlantic Forest of the RPPN of Frei Caneca, to the long one of the year, to define excellent conditions of growth of the species, and also to define anatomical standard of fronds of two sp
Publicado em: 2008
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12. Análise da produção do antitumoral retamicina em cultivos contínuos de Streptomyces olindensis ICB20 utilizando planejamento fatorial. / Analysis of the production of the antitumor drug retamycin in continous cultures of Streptomyces olindensis ICB 20 using factorial desing.
The aim of this project was to study the production of retamycin in bench-top bioreactors by Streptomyces olindensis ICB20 in continuous cultures in order to evaluate the influence of the agitation rate (N=300, 500 or 700 rpm), the dissolved oxygen concentration (20%, 50% or 80%) and the specific growth rate (µ=0.05, 0.15 or 0.25 h-¹). A full factorial exp
Publicado em: 2008