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18 Newest Publications about the topic light emissions

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Current Status of Research on Fungal Bioluminescence: Biochemistry and Prospects for Ecotoxicological Application

11-Jul-2013 | Cassius V. Stevani, Anderson G. Oliveira, Luiz F. Mendes, Fernanda F. Ventura, Hans E. Waldenmaier, Rodrigo P. Carva ..., Photochemistry and Photobiology, 2013

Abstract Over the last half decade the study of fungal bioluminescence has regained momentum since the involvement of enzymes has been confirmed after over 40 years of controversy. Since then our laboratory has worked mainly on further characterizing the substances involved in fungal ...

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Experimental in vivo measurements of light emission in plants: a perspective dedicated to David Walker

13-Oct-2012 | Hazem M. Kalaji, Vasilij Goltsev, Karolina Bosa, Suleyman I. Allakhverdiev, Reto J. Strasser, Govindjee, Photosynthesis Research, 2012

This review is dedicated to David Walker (1928–2012), a pioneer in the field of photosynthesis and chlorophyll fluorescence. We begin this review by presenting the history of light emission studies, from the ancient times. Light emission from plants is of several kinds: prompt fluorescence (PF), ...

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Are the Bio‐ and Chemiluminescence States of the Firefly Oxyluciferin the Same as the Fluorescence State?

11-Oct-2012 | Isabelle Navizet, Daniel Roca‐Sanjuán, Ling Yue, Ya‐Jun Liu, Nicolas Ferré, Roland Lindh, Photochemistry and Photobiology, 2012

Abstract A usual strategy in both experimental and theoretical studies on bio‐ and chemiluminescence is to analyze the fluorescent properties of the bio‐ and chemiluminescence reaction product. Recent findings in a coelenteramide and Cypridina oxyluciferin model arise a concern on the validity ...

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Engineered Luciferase Reporter from a Deep Sea Shrimp Utilizing a Novel Imidazopyrazinone Substrate

30-Aug-2012 | Mary P. Hall; James Unch; Brock F. Binkowski; Michael P. Valley; Braeden L. Butler; Monika G. Wood; Paul Otto; Krist ..., ACS Chemical Biology, 2012

Bioluminescence methodologies have been extraordinarily useful due to their high sensitivity, broad dynamic range, and operational simplicity. These capabilities have been realized largely through incremental adaptations of native enzymes and substrates, originating from luminous organisms of ...

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[Report] Spin-Polarized Light-Emitting Diode Based on an Organic Bipolar Spin Valve

13-Jul-2012 | Tho D. Nguyen; Eitan Ehrenfreund; Z. Valy Vardeny, Science , 2012

The light emission from an organic light-emitting diode depends on the spin polarization of the injected current.

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This Week in Science Editor summaries of this week's papers.

13-Jul-2012 | Science , 2012

Biofilms Up Close | A Timely Structure | MMS19 Joins the CIA | Influenza's Cryptic Constraint | Spin-Dependent Light Emission | Moving Dislocations | Abiotic Martian Organics | More Melting | Acidification Blues | They Walked Together | Growing Extinction Debt | GPCR Close-Up | Pole to Pole

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Vibrio azureus emits blue‐shifted light via an accessory blue fluorescent protein

23-Jan-2012 | Yoshizawa, Susumu; Karatani, Hajime; Wada, Minoru; Kogure, Kazuhiro, FEMS Microbiology Letters, 2012

Abstract Luminous marine bacteria usually emit bluish‐green light with a peak emission wavelength (λmax) at about 490 nm. Some species belonging to the genus Photobacterium are exceptions, producing an accessory blue fluorescent protein (lumazine protein: LumP) that causes a blue shift, from ...

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Using spontaneous photon emission to image lipid oxidation patterns in plant tissues

01-Sep-2011 | Birtic, Simona; Ksas, Brigitte; Genty, Bernard; Mueller, Martin J.; Triantaphylidès, Christian; Havaux, Michel, The Plant Journal, 2011

Summary Plants, like almost all living organisms, spontaneously emit photons of visible light. We used a highly sensitive, low‐noise cooled charge coupled device camera to image spontaneous photon emission (autoluminescence) of plants. Oxidative stress and wounding induced a long‐lasting ...

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Functional morphology of the luminescence system of Siphamia versicolor (Perciformes: Apogonidae), a bacterially luminous coral reef fish

01-Aug-2011 | Paul V. Dunlap; Masaru Nakamura, Journal of Morphology, 2011

Abstract Previous studies of the luminescence system of Siphamia versicolor (Perciformes: Apogonidae) identified a ventral light organ, reflector, lens, duct, and a ventral diffuser extending from the throat to the caudal peduncle. The control and function of luminescence in this and other ...

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A fluorescent chromophore TOTO‐3 as a ‘smart probe’ for the assessment of ultrasound‐mediated local drug delivery in vivo

01-Jul-2011 | Deckers, Roel; Yudina, Anna; Cardoit, Laura C.; Moonen, Chrit T. W., Contrast Media & Molecular Imaging, 2011

Abstract Many potent anti‐cancer drugs have an intracellular mode of action, but are limited in crossing the cell membrane, resulting in a reduced clinical efficacy. Ultrasound (US) is known to facilitate the penetration of drugs into tumors cells. However (molecular) imaging techniques that ...

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