Najafabad
Najafabad , city (1991 pop. 160,004), Esfahan prov., W central Iran, near Esfahan. It is the trade center for an agricultural region noted for its pomegranates.
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Analysis of phosphorescence decay in heterogeneous systems: Consequences of finite excitation flesh duration
Magazine article from: Photochemistry and Photobiology; 6/1/1999; ; 700+ words
; ABSTRACT Analysis of phosphorescence lifetimes using the SternVolmer...the Stern-Volmer ratio of phosphorescence intensities cannot be employed...time-resolved analysis of phosphorescence or fluorescence decays using...
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Room temperature phosphorescence from tryptphan and halogenated tryptophan analogs in amorphous sucrose
Magazine article from: Photochemistry and Photobiology; 8/1/1999; ; 700+ words
; ABSTRACT Tryptophan phosphorescence lifetime and quantum yield are...to the local environment. The phosphorescence from tryptophan analogs, however...data on the room temperature phosphorescence of tryptophan, 4-, 5- and...
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Characterization of F-Actin Tryptophan Phosphorescence in the Presence and Absence of Tryptophan-Free Myosin Motor Domain
Magazine article from: Biophysical Journal; 8/1/2004; ; 700+ words
; ...an analysis of steady-state tryptophan phosphorescence spectra and phosphorescence decay kinetics over a temperature range...discoideum to actin caused red shifts in the phosphorescence spectrum of two internal Trp residues of...
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A Review of Heavy-Atom-Induced Room-Temperature Phosphorescence: a Straightforward Phosphorimetric Method
Magazine article from: Critical Reviews in Analytical Chemistry; 1/1/2005; ; 700+ words
; ...induced, room-temperature phosphorescence (HAI-RTP), a new technique...triplet states and thus emit intense phosphorescence. Keywords heavy-atom-induced, room-temperature phosphorescence INTRODUCTION Luminescence is a...
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Erythrosin B Phosphorescence Monitors Molecular Mobility and Dynamic Site Heterogeneity in Amorphous Sucrose
Magazine article from: Biophysical Journal; 5/1/2005; ; 700+ words
; ...steady-state and time-resolved phosphorescence of erythrosin B to monitor mobility...as a function of temperature. The phosphorescence intensity (lifetime), emission...excitation and systematic variations in the phosphorescence lifetime with wavelength indicated...
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Differentiation of the Local Structure Around Tryptophan 51 and 64 in Recombinant Human Erythropoietin by Tryptophan Phosphorescence
Magazine article from: Photochemistry and Photobiology; 9/1/2008; ; 700+ words
; ...positions 51, 64 and 88 whose phosphorescence emission may represent a sensitive...This report characterizes the phosphorescence properties (spectral energy, thermal spectral relaxation and phosphorescence lifetime), from low temperature...
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Time-resolved Singlet Oxygen Phosphorescence Measurements from Photosensitized Experiments in Single Cells: Effects of Oxygen Diffusion and Oxygen Concentration
Magazine article from: Photochemistry and Photobiology; 9/1/2008; ; 700+ words
; ...sup 1^Δ^sub g^), phosphorescence experiments have been performed in...a^sup 1^Δ^sub g^) phosphorescence data and sensitizer triplet state...931;^sub g^^sup -^) phosphorescence at 1270 nm has proved to be a most...
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Quenching Platinum Octaethylporphine Phosphorescence in Solution by Poly(ferrocenylsilane)[dagger]
Magazine article from: Photochemistry and Photobiology; 1/1/2006; ; 700+ words
; ...platinum octaethylporphine (PtOEP) phosphorescence in toluene solution. The phosphorescence quenching process was interpreted in...backbone is a good quencher for PtOEP phosphorescence. Quenching by the polymer involves...
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Hued afterglow: fingerprinting diamonds via phosphorescence.(This Week)
Magazine article from: Science News; 1/12/2008; ; 700+ words
; The eerie phosphorescence displayed by a rare form of blue...suggest. [ILLUSTRATION OMITTED] Phosphorescence, a "glow-in-the-dark...seconds and then measured its phosphorescence at various wavelengths. Reddish...
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Intramolecular Quenching of Tryptophan Phosphorescence in Short Peptides and Proteins¶
Magazine article from: Photochemistry and Photobiology; 5/1/2005; ; 700+ words
; ABSTRACT The phosphorescence lifetime (τ) of tryptophan...and Phe are able to quench Trp phosphorescence at a detectable rate (k^sub...in proteins that exhibit long phosphorescence lifetimes at ambient temperature...
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phosphorescence
Book article from: The Columbia Encyclopedia, Sixth Edition
phosphorescence , luminescence produced by certain...energy or other types of energy. Phosphorescence is distinguished from fluorescence...radiation causing it has ceased. Phosphorescence was first observed in the 17th cent...
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Luminescence
Encyclopedia entry from: The Gale Encyclopedia of Science
...categories by duration (fluorescence or phosphorescence) or by the mechanism that creates...the excitation energy is cut off. Phosphorescence continues for longer than fluorescence...watch hands that glow are examples of phosphorescence. A less obvious but more exact definition...
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Becquerel, Antoine-Henri
Book article from: Chemistry: Foundations and Applications
...centered around solar radiation and phosphorescence, as these are phenomena that his...polarized light, the phenomenon of phosphorescence (in which certain compounds glow...which has a strong but short-lived phosphorescence. He carefully wrapped his photographic...
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Bioluminescence
Book article from: Chemistry: Foundations and Applications
...light differ from fluorescence and phosphorescence, which involve the absorption of...the processes of fluorescence and phosphorescence also occur in living organisms and...that have described the apparent "phosphorescence" of the sea. Dinoflagellates are...
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Chemiluminescence
Book article from: Chemistry: Foundations and Applications
...phosphorus. It is unfortunate that the chemiluminescent glow of phosphorus gave rise to the term "phosphorescence." Scientifically, phosphorescence is a process whereby absorbed photons are emitted at a later time, as exemplified by the glow...
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