High Dynamic Range Imaging
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. A Simple Fluorescent Chemosensor for Detection of Zinc Ions in Some Real Samples and Intracellular Imaging in Living Cells
A new designed fluorescent chemosensor TYMN ((E)-1-((thiazol-2-ylimino)methyl)naphthalen-2-ol) for highly sensitive and selective tracing of trace amount of Zn2+ ions in some real samples was synthesized and characterized. The sensor TYMN can detect Zn2+ ions via fluorescence enhancement with a high selectivity over a wide range of metal ions, especially Cd2
J. Braz. Chem. Soc.. Publicado em: 2020-08
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2. Experimental study of brass properties through perforation tests using a thermal chamber for elevated temperatures
Abstract Experimental analysis on standard brass alloy has been carried out using a high pressure gas gun. Perforation tests have been performed for a variety of impact velocities from 40 to 120 m/s in order to study the material behaviour and to define failure modes. The main aim of the study has been to provide results using an innovative thermal chamber t
Lat. Am. j. solids struct.. Publicado em: 22/10/2018
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3. Real-time photographic local tone reproduction using summed-area tables / Reprodução fotográfica local de tons em tempo real usando tabelas de áreas acumuladas
A síntese de imagens com alta faixa dinâmica é uma prática cada vez mais comum em computação gráfica. O desafio consiste em relacionar o grande conjunto de intensidades da imagem sintetizada com um sub-conjunto muito inferior suportado por um dispositivo de exibição, evitando a perda de detalhes contrastivos. Os operadores locais de reprodução de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2008
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4. ATOMIC FLUORESCENCE SPECTROSCOPIC METHODS FOR ULTRATRACE ELEMENTAL ANALYSIS USING A HIGH- REPETITION RATE TUNABLE DYE LASER AND FURNACE SAMPLE ATOMIZATION
The goal of this work was to develop ultrasensitive methods based on Electrothermal atomization laser-excited atomic fluorescence (ETA-LEAFS) to determine Ge, In, Pb, Pt and Tm in complex samples such as biological and environmental. The ultimate goal was to achieve high sensitivity and high selectivity with little sample manipulation and simple sample calib
Publicado em: 1999
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5. Assessing atherosclerotic plaque morphology: comparison of optical coherence tomography and high frequency intravascular ultrasound.
BACKGROUND: OCT can image plaque microstructure at a level of resolution not previously demonstrated with other imaging techniques because it uses infrared light rather than acoustic waves. OBJECTIVES: To compare optical coherence tomography (OCT) and intravascular ultrasound (IVUS) imaging of in vitro atherosclerotic plaques. METHODS: Segments of abdominal
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6. Vibro-acoustography: An imaging modality based on ultrasound-stimulated acoustic emission
We describe theoretical principles of an imaging modality that uses the acoustic response of an object to a highly localized dynamic radiation force of an ultrasound field. In this method, named ultrasound-stimulated vibro-acoustography (USVA), ultrasound is used to exert a low-frequency (in kHz range) force on the object. In response, a portion of the objec
The National Academy of Sciences.
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7. Morphology of high-luminosity compact radio sources.
High-dynamic range imaging and monitoring with very-long-baseline interferometry reveal a rich morphology of luminous flat-spectrum radio sources. One-sided core-jet structures abound, and superluminal motion is frequently measured. In a few cases, both distinct moving features and diffuse underlying jet emission can be detected. Superluminal motion seen in
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8. Architectural and synaptic mechanisms underlying coherent spontaneous activity in V1
To investigate the existence and the characteristics of possible cortical operating points of the primary visual cortex, as manifested by the coherent spontaneous ongoing activity revealed by real-time optical imaging based on voltage-sensitive dyes, we studied numerically a very large-scale (≈5 × 105) conductance-based, integrate-and-fire neuronal networ
National Academy of Sciences.
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9. Changes in left ventricular function during exercise and their relation to ST segment changes in patients with angina.
The high count sensitivity of the non-imaging nuclear probe affords the possibility of measuring left ventricular ejection fraction continuously during short term interventions. The nuclear probe was used to examine the pattern of change of left ventricular function during dynamic exercise and its temporal relation to ST segment depression in 12 patients wit