Methodological considerations regarding the problem of apparent versus intrinsic fluorescence properties of historical paint layers (Conference Presentation)

2019 ◽  
Author(s):  
Fabien Pottier ◽  
Anne Michelin ◽  
Christine Andraud ◽  
Fabrice Goubard ◽  
Bertrand Lavédrine
Keyword(s):  
Intrinsic Fluorescence ◽  
Fluorescence Properties ◽  
Methodological Considerations

Use of Glycerol-Containing Media To Study the Intrinsic Fluorescence Properties of Detergent-Solubilized Native or Expressed SERCA1a†

Biochemistry ◽  
2008 ◽  
Vol 47 (46) ◽  
pp. 12159-12174 ◽  
Author(s):  
Cédric Montigny ◽  
Bertrand Arnou ◽  
Estelle Marchal ◽  
Philippe Champeil
Keyword(s):  
Intrinsic Fluorescence ◽  
Fluorescence Properties

Intrinsic fluorescence properties of rhodamine cations in gas-phase: triplet lifetimes and dispersed fluorescence spectra

2013 ◽  
Vol 15 (21) ◽  
pp. 8162 ◽  
Author(s):  
Jean-François Greisch ◽  
Michael E. Harding ◽  
Mattias Kordel ◽  
Wim Klopper ◽  
Manfred M. Kappes ◽  
...  
Keyword(s):  
Gas Phase ◽  
Fluorescence Spectra ◽  
Intrinsic Fluorescence ◽  
Fluorescence Properties ◽  
Dispersed Fluorescence

scholarly journals Intrinsic Fluorescence Properties and Structural Analysis of p13suc1fromSchizosaccharomyces pombe

1996 ◽  
Vol 271 (44) ◽  
pp. 27249-27258 ◽  
Author(s):  
Paolo Neyroz ◽  
Carolina Menna ◽  
Eugenia Polverini ◽  
Lanfranco Masotti
Keyword(s):  
Structural Analysis ◽  
Intrinsic Fluorescence ◽  
Fluorescence Properties

scholarly journals Intrinsic fluorescence properties of antimalarial pyrido[1,2-a]benzimidazoles facilitate subcellular accumulation and mechanistic studies in the human malaria parasite Plasmodium falciparum

2020 ◽  
Vol 18 (42) ◽  
pp. 8668-8676
Author(s):  
Constance M. Korkor ◽  
Larnelle F. Garnie ◽  
Leah Amod ◽  
Timothy J. Egan ◽  
Kelly Chibale
Keyword(s):  
Plasmodium Falciparum ◽  
Malaria Parasite ◽  
Intrinsic Fluorescence ◽  
Fluorescence Properties ◽  
Benzimidazole Derivatives ◽  
Inhibition Assay ◽  
Mechanistic Studies ◽  
Human Malaria Parasite ◽  
Parasite Plasmodium ◽  
Parasite Plasmodium Falciparum

Intrinsic fluorescence properties, docking and a hemozoin inhibition assay were employed to study the mechanism of action of two structurally related pyrido-[1,2-a]benzimidazole derivatives.

Significant Influence of Distance between Amine Groups on Intrinsic Fluorescence Properties

2014 ◽  
Vol 43 (2) ◽  
pp. 246-248 ◽  
Author(s):  
Lei Cao ◽  
Dandan Jia ◽  
Shaofei Wang ◽  
Yunlong Rong ◽  
Chun Liu ◽  
...  
Keyword(s):  
Significant Influence ◽  
Intrinsic Fluorescence ◽  
Fluorescence Properties ◽  
Amine Groups

Spectroscopic Characterization of the Artificial Siderophore Pyridinochelin

2006 ◽  
Vol 61 (9-10) ◽  
pp. 741-748 ◽  
Author(s):  
Michael U. Kumke ◽  
Carsten Dosche ◽  
Roman Flehr ◽  
Wolfram Trowitzsch-Kienast ◽  
Hans-Gerd Löhmannsröben
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Fluorescence Probe ◽  
Fluorescence Decay ◽  
Molecular Probes ◽  
Transport Processes ◽  
Intrinsic Fluorescence ◽  
Fluorescence Properties ◽  
Free Form ◽  
Fluorescence Characteristics

AbstractSiderophores play a very important role in the uptake process of iron by bacteria. Due to the so-called active transport the uptake of siderophores by bacteria is very specific, which makes the use of siderophores as effective shuttles for antibiotics in the treatment of infections and other diseases caused by bacteria highly attractive. In order to further investigate the transport and incorporation of siderophores into the bacteria cells, distinct molecular probes are needed. Especially artificial siderophores, that show a specific intrinsic fluorescence, are highly attractive for such monitoring purposes. A promising candidate of such a fluorescent artificial siderophore is bis-2,3-dihydroxybenzoyl-2,6-dimethylamino-pyridine (pyridinochelin, PY). The fluorescence properties of PY were investigated in different solvents and in the presence of different metal ions. It was found that PY in its free form shows a complex fluorescence behavior. In methanol a clear dual fluorescence is observed. In aqueous solution intermolecular interactions with water molecules are determining the intrinsic fluorescence. Upon complexation with metal ions (Me3+ = Eu3+, Tb3+, Al3+, Fe3+) the fluorescence characteristics changed. The fluorescence quantum yield of PY decreased upon addition of Me3+ - except for Al3+, which showed no fluorescence quenching. The fluorescence decay of PY loaded with metal ions showed a nicely mono-exponential fluorescence decay, which was in contrast to PY in the absence of metal ions. This drastic change in the fluorescence properties of PY upon metal ion complexation makes PY highly attractive as a fluorescence probe for the investigation of siderophore action and siderophore-mediated transport processes

Maternal Perception of Infants’ Expressions of Emotion

2010 ◽  
Vol 24 (3) ◽  
pp. 173-185 ◽  
Author(s):  
Martin Krippl ◽  
Stephanie Ast-Scheitenberger ◽  
Ina Bovenschen ◽  
Gottfried Spangler
Keyword(s):  
Response Pattern ◽  
Electrodermal Activity ◽  
Startle Amplitude ◽  
Caregiving System ◽  
Parental Caregiving ◽  
Opponent Process ◽  
Opponent Process Theory ◽  
Valence And Arousal ◽  
Methodological Considerations

In light of Lang’s differentiation of the aversive and the approach system – and assumptions stemming from attachment theory – this study investigates the role of the approach or caregiving system for processing infant emotional stimuli by comparing IAPS pictures, infant pictures, and videos. IAPS pictures, infant pictures, and infant videos of positive, neutral, or negative content were presented to 69 mothers, accompanied by randomized startle probes. The assessment of emotional responses included subjective ratings of valence and arousal, corrugator activity, the startle amplitude, and electrodermal activity. In line with Lang’s original conception, the typical startle response pattern was found for IAPS pictures, whereas no startle modulation was observed for infant pictures. Moreover, the startle amplitudes during negative video scenes depicting crying infants were reduced. The results are discussed with respect to several theoretical and methodological considerations, including Lang’s theory, emotion regulation, opponent process theory, and the parental caregiving system.

Effectiveness of Programs for the Prevention of Child Sexual Abuse

2020 ◽  
Vol 25 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Amaia Del Campo ◽  
Marisalva Fávero
Keyword(s):  
United States ◽  
Sexual Abuse ◽  
New Zealand ◽  
Critical Analysis ◽  
Prevention Programs ◽  
The United States ◽  
Sexual Abuse Prevention ◽  
Negative Effects ◽  
The United Kingdom ◽  
Methodological Considerations

Abstract. During the last decades, several studies have been conducted on the effectiveness of sexual abuse prevention programs implemented in different countries. In this article, we present a review of 70 studies (1981–2017) evaluating prevention programs, conducted mostly in the United States and Canada, although with a considerable presence also in other countries, such as New Zealand and the United Kingdom. The results of these studies, in general, are very promising and encourage us to continue this type of intervention, almost unanimously confirming its effectiveness. Prevention programs encourage children and adolescents to report the abuse experienced and they may help to reduce the trauma of sexual abuse if there are victims among the participants. We also found that some evaluations have not considered the possible negative effects of this type of programs in the event that they are applied inappropriately. Finally, we present some methodological considerations as critical analysis to this type of evaluations.

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