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coumarin/carie dentaire
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Coumarin 120 laser pulses close to the Fourier transform limit from a simplified resonant cavity.
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Using a simplified resonant cavity consisted of an optical parallel glass plate and a diffraction grating at near grazing incidence and the appropriate laser parameters, coumarin 120 laser pulses close to the Fourier transform limit have been obtained. These laser pulses have a spectral linewidth of
Retronasal but not oral-cavity-only identification of "purely olfactory" odorants.
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Identifications of 5 odorants selected to be nontrigeminal stimuli were compared using retronasal and oral-cavity-only (OCO) air-phase presentations, with OCO produced by both exhalation through the mouth and a nose clip that closed the nostrils. Nine identifiers were available on each trial; 1 or 2
Interfacial regions governing internal cavities of dendrimers. Studies of poly(alkyl aryl ether) dendrimers constituted with linkers of varying alkyl chain length.
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This report deals with a study of the properties of internal cavities of dendritic macromolecules that are capable of encapsulating and mediating photoreactions of guest molecules. The internal cavity structures of dendrimers are determined by the interfacial regions between the aqueous exterior and
Evanescent wave cavity ring-down spectroscopy (EW-CRDS) as a probe of macromolecule adsorption kinetics at functionalized interfaces.
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Evanescent wave cavity ring-down spectroscopy (EW-CRDS) has been employed to study the interfacial adsorption kinetics of coumarin-tagged macromolecules onto a range of functionalized planar surfaces. Such studies are valuable in designing polymers for complex systems where the degree of interaction
Exploring carbonic anhydrase inhibition with multimeric coumarins displayed on a fullerene scaffold.
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Carbonic anhydrases (CAs) are ubiquitous Zn metallo-enzymes that catalyze the reversible hydration/dehydration of CO2/HCO3(-). CAs are involved in many key biological processes, therefore their inhibition has become an attractive research field. Distinct families of CA inhibitors (CAIs) have been
Ultrafast electron transfer in a nanocavity. dimethylaniline to coumarin dyes in hydroxypropyl gamma-cyclodextrin.
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Photoinduced electron transfer (PET) from N,N-dimethylaniline (DMA) to four coumarin dyes (C151, C481, C153, and C480) inside the cavity of hydroxypropyl gamma-cyclodextrin (hpCD) is studied using femtosecond upconversion. The rate of PET is found to be nonexponential and to vary significantly with
Photodimerization and complexation dynamics of coumarins in the presence of cucurbit[8]urils.
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Coumarin derivatives with non-polar substituents at the 6 or 7 position undergoes photodimerization in the presence of CB[8] in water to give the syn dimer as the major product. It is postulated that these neutral coumarins form dynamic complexes in the presence of CB[8] and the product selectivity
3D-QSAR and Molecular Docking Studies on the TcPMCA1-Mediated Detoxification of Scopoletin and Coumarin Derivatives.
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The carmine spider mite, Tetranychus cinnabarinus (Boisduval), is an economically important agricultural pest that is difficult to prevent and control. Scopoletin is a botanical coumarin derivative that targets Ca2+-ATPase to exert a strong acaricidal effect on carmine spider mites. In this study,
Novel peptides bearing pyrene and coumarin units with or without beta-cyclodextrin in their side chains exhibit intramolecular fluorescence resonance energy transfer.
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Novel peptides bearing the pyrene/coumarin FRET pair in their side chains have been designed and synthesized. Peptide 1 having endogenous beta-cyclodextrin (beta-CD) in the side chain exhibits FRET in aqueous solution, indicating that coumarin, being accommodated into the CD cavity, is separated
Cucurbit[8]uril-templated H and J dimers of bichromophoric coumarin dyes: origin of contrasting emission.
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We report the supramolecular control and mechanism for the contrasting dimer emission from selected bichromophoric coumarin dyes caught in the cucurbit[8]uril cavity-a facile approach to developing photo-responsive molecular assemblies through structural tuning.
Exploring the picosecond time domain of the solvation dynamics of coumarin 153 within beta-cyclodextrins.
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We report molecular dynamics simulation results of equilibrium and dynamical characteristics pertaining to the solvation of the dye coumarin 153 (C153) trapped within hydrophobic cavities of di- and trimethylated beta-cyclodextrins (CD) in aqueous solutions. We found that stable configurations of
[Patient with warfarin poisoning caused by coumarin rodenticide].
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We report a patient who attempted suicide by taking warfarin as a coumarin rodenticide twice, and showed oral bleeding and an abnormally prolonged bleeding tendency after 10 days. He was conscious. His body temperature was 36.6 degrees C, the respiratory rate was 23/min, and blood pressure was
Multi-color lasing in chemically open droplet cavities.
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In this paper, we demonstrate FRET-based multicolor lasing within chemically open droplet cavities that allow online modulation of the gain medium composition. To do this, we generated monodisperse microfluidic droplets loaded with coumarin 102 (donor), where the spherical droplets acted as
No oral-cavity-only discrimination of purely olfactory odorants.
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The purely olfactory odorants coumarin, octanoic acid, phenylethyl alcohol, and vanillin had been found to be consistently identified when presented retronasally but could not be identified when presented oral-cavity only (OCO). However, OCO discrimination of these odorants was not tested.
Prism preexpanded grazing-incidence grating cavity for pulsed dye lasers.
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A modification to the grazing-incidence grating cavity for pulsed dye lasers is described whereby a prism is employed to expand the intracavity beam by a small factor before illumination of the grating. Suitable choice of the angles of incidence at both prism and grating permits good spectral
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