Development Of Laser
Mostrando 13-24 de 290 artigos, teses e dissertações.
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13. Laser cooling techniques: standard and alternated optical molasses
The technique of laser cooling, whose basic idea was proposed in 1975 [1], provided the development of many important areas like high-resolution spectroscopy [2], atomic clocks [3] and quantum gases confined in magnetic or optical traps [4, 5]. Among the techniques applied to cooling neutral atoms is the optical molasses [6] that will be explored in this wor
Rev. Bras. Ensino Fís.. Publicado em: 22/05/2017
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14. Effects of Laser Beak Trimming on the Development of Brown Layer Pullets
ABSTRACT Laser beak trimming is a promising alternative to conventional hot-blade beak trimming as it is less painful and provides better beak uniformity and better animal welfare. In this study, laser vs. hot-blade beak trimming were compared in 400 Hy-line Brown pullets between 2-16 weeks of age. At 7 days of age, birds were distributed according to a comp
Rev. Bras. Cienc. Avic.. Publicado em: 2017-03
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15. Experimental Development of Dual Phase Steel Laser-arc Hybrid Welding and its Comparison to Laser and Gas Metal Arc Welding
Abstract Dual phase DP600 steels have been used in many automobile structures and laser welding has been the standard method for the joining of different sections. This work proposed a comparison between laser welding with arc welding (GMAW) and with hybrid laser-arc welding in order to access the microstructures and the mechanical behavior. The laser and hy
Soldag. insp.. Publicado em: 2016-09
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16. Síndrome de transfusão feto-fetal: neurodesenvolvimento de lactentes tratados com cirurgia a laser
RESUMO Objetivo Avaliar o desenvolvimento neurológico de sobreviventes da sindrome de transfusão feto-fetal (STFF) submetidos à coagulação a laser por fetoscopia (CLF), durante o primeiro ano de vida, comparando estes ao grupo controle; e verificar a influência de variáveis específicas no desenvolvimento. Método Tratou-se de estudo prospectivo, lo
Arq. Neuro-Psiquiatr.. Publicado em: 2016-04
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17. Development of an ex vivo model of endovenous laser ablation of the great saphenous vein in a pilot study
ABSTRACT PURPOSE: To develop an ex vivo model for the analysis of macroscopic, histological and immunohistochemical changes after experimental endovenous laser ablation (EVLA) of the great saphenous vein (GSV). METHODS: We describe a model produced with glass tubes and introducer sheaths to mimic the physiological conditions of EVLA procedures, such as t
Acta Cir. Bras.. Publicado em: 2016-03
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18. Influence of pH, bleaching agents, and acid etching on surface wear of bovine enamel
ABSTRACT Development of new materials for tooth bleaching justifies the need for studies to evaluate the changes in the enamel surface caused by different bleaching protocols. Objective The aim of this study was to evaluate the bovine dental enamel wear in function of different bleaching gel protocols, acid etching and pH variation. Material and Methods
J. Appl. Oral Sci.. Publicado em: 2016-02
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19. Nonlinear Optical Properties and Femtosecond Laser Micromachining of Special Glasses
Materials specially designed for photonics have been at the vanguard of chemistry, physics and materials science, driven by the development of new technologies. One particular class of materials investigated in this context are glasses, that in principle should exhibit high third order optical nonlinearities and fast response time, whose optical properties c
J. Braz. Chem. Soc.. Publicado em: 2015-12
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20. Modal Shape Analysis Using Thermal Imaging
ABSTRACT: In recent years, advances in aeronautical engineering field include, among others, the development of increasingly lightweight and flexible materials, allowing better performance of systems in applications such as Unmanned Aerial Vehicles, photographic model airplanes, light weight aircraft etc. This progress, however, can cause difficulties in des
J. Aerosp. Technol. Manag.. Publicado em: 2015-06
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21. Performance Evaluation of a Portable Laser-Induced Fluorescence Spectroscopy System for the Assessment of the Humification Degree of the Soil Organic Matter
Laser-induced fluorescence spectroscopy (LIFS) has shown advantages for analyses of whole soil, providing results about chemical structure of soil organic matter (SOM) without the need for a chemical fractionating process; thus, allowing direct analysis of soils. Moreover, another advantage is the potential for the development of portable systems, which coul
J. Braz. Chem. Soc.. Publicado em: 2015-04
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22. Síndrome de transfusão feto-fetal: teste de triagem do desenvolvimento neurológico
Objetivo Avaliar as funções do desenvolvimento neurológico (cognição, linguagem e motricidade) de sobreviventes da síndrome de transfusão feto-fetal (STFF). Método Estudo transversal observacional, total de 67 gêmeos diamnióticos monocoriônicos submetidos à coagulação a laser por fetoscopia para o tratamento da STFF. O estudo foi realizado no
Arq. Neuro-Psiquiatr.. Publicado em: 2015-03
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23. JVG9, a benzimidazole derivative, alters the surface and cytoskeleton of Trypanosoma cruzi bloodstream trypomastigotes
Trypanosoma cruzi has a particular cytoskeleton that consists of a subpellicular network of microtubules and actin microfilaments. Therefore, it is an excellent target for the development of new anti-parasitic drugs. Benzimidazole 2-carbamates, a class of well-known broad-spectrum anthelmintics, have been shown to inhibit the in vitro growth of many protozoa
Mem. Inst. Oswaldo Cruz. Publicado em: 09/09/2014
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24. High Power Laser Weapons and Operational Implications
ABSTRACT: The operational implications of high power laser weapons are constantly growing in countries with advanced military technological level. As well as on progress in integration with air, land and naval platforms, this paper discusses the necessary development and implementation of the operational concepts into Armed Forces, which should target orient
J. Aerosp. Technol. Manag.. Publicado em: 2014-09