Results 21 to 30 of about 114,370 (293)

Single- and multi-photon excited fluorescence from serotonin complexed with B-cyclodextrin [PDF]

, 2006
The fluorescence of serotonin on binding with B-cyclodextrin has been studied using both steady-state and time-resolved methods. Steady state fluorescence intensity of serotonin at 340 nm showed ~ 30% increase in intensity on binding with Ka ~ 60 dm3 mol
Anthony W. Parker, Asberg, Beturquia, Bisby, Bortolus, Botchway, Chattopadhyay, Donze, El-Kemary, Elhwuegi, Galian, Gordon, Gostkowski, Gostkowski, Lotte, Maiti, Merz, Okumoto, Orstan, Rao, Roger H. Bisby, Ross, Scypinski, Shakeela Dad, Shear, Stanley W. Botchway, Szejtli, Williams   +27 more
core   +1 more source

Use of multiphoton tomography and fluorescence lifetime imaging to investigate skin pigmentation in vivo [PDF]

, 2013
There is a growing body of literature showing the usefulness of multiphoton tomography (MPT) and fluorescence lifetime imaging for in situ characterization of skin constituents and the ensuing development of noninvasive diagnostic tools against skin ...
Dancik, Yuri, Favre, Amandine, Loy, Chong Jin, Roberts, Michael S., Zvyagin, Andrei V.   +4 more
core   +1 more source

In Vivo Time Domain Optical Imaging of Renal Ischemia-Reperfusion Injury: Discrimination Based on Fluorescence Lifetime

Molecular Imaging, 2007
Fluorescence lifetime is an intrinsic parameter of the fluorescent probe, independent of the probe concentration but sensitive to changes in the surrounding microenvironment.
Abedelnasser Abulrob, Eric Brunette, Jacqueline Slinn, Ewa Baumann, Danica Stanimirovic   +4 more
doaj   +1 more source

In vivo label-free mapping of the effect of a photosystem II inhibiting herbicide in plants using chlorophyll fluorescence lifetime

Plant Methods, 2017
Background In order to better understand and improve the mode of action of agrochemicals, it is useful to be able to visualize their uptake and distribution in vivo, non-invasively and, ideally, in the field.
Elizabeth Noble, Sunil Kumar, Frederik G. Görlitz, Chris Stain, Chris Dunsby, Paul M. W. French   +5 more
doaj   +1 more source

Photoacoustic and fluorescence lifetime imaging of diatoms

Photoacoustics, 2020
Photoacoustic and fluorescent methods are used intensely in biology and medicine. These approaches can also be used to investigate unicellular diatom algae that are extremely important for Earth’s ecology.
Julijana Cvjetinovic, Alexey I. Salimon, Marina V. Novoselova, Philipp V. Sapozhnikov, Evgeny A. Shirshin, Alexey M. Yashchenok, Olga Yu. Kalinina, Alexander M. Korsunsky, Dmitry A. Gorin   +8 more
doaj   +1 more source

Stroboscopic fluorescence lifetime imaging

Optics Express, 2009
We report a fluorescence lifetime imaging technique that uses the time integrated response to a periodic optical excitation, eliminating the need for time resolution in detection. A Dirac pulse train of variable period is used to probe the frequency response of the total fluorescence per pulse leading to a frequency roll-off that is dependent on the ...
Holton, Mark D., Silvestre, Oscar, Errington, Rachel Jane, Smith, Paul James, Matthews, Daniel R., Rees, Paul, Summers, Huw D.   +6 more
openaire   +4 more sources

Fluorescence lifetime imaging for explosive detection [PDF]

Optics Letters, 2023
In this Letter, a time-resolved 120 × 128 pixel single-photon avalanche diode (SPAD) sensor is used in conjunction with an array of organic semiconductor films as a means of detecting the presence of explosive vapors. Using the spatial and temporal resolution of the sensor, both fluorescence intensity and fluorescence lifetime can be monitored on a ...
Andrew B. Matheson, Edward B. Ogugu, Ross N. Gillanders, Graham A. Turnbull, Robert Henderson   +4 more
openaire   +4 more sources

Enhanced detection of oral dysplasia by structured illumination fluorescence lifetime imaging microscopy

Scientific Reports, 2021
We demonstrate that structured illumination microscopy has the potential to enhance fluorescence lifetime imaging microscopy (FLIM) as an early detection method for oral squamous cell carcinoma.
Taylor A. Hinsdale, Bilal H. Malik, Shuna Cheng, Oscar R. Benavides, Maryellen L. Giger, John M. Wright, Paras B. Patel, Javier A. Jo, Kristen C. Maitland   +8 more
doaj   +1 more source

A surface plasmon enhanced FLIM-FRET imaging approach based on Au nanoparticles [PDF]

, 2017
In this report we have demonstrated a fluorescence resonant energy transfer (FRET)-fluorescence lifetime imaging microscopy (FLIM) combined approach to study the intracellular pathway of gold nanoparticles.
Birch, David JS, Chen, Yu, Yu, Jun, Zhang, Yinan   +3 more
core   +1 more source

Macroscopic fluorescence-lifetime imaging of NADH and protoporphyrin IX improves the detection and grading of 5-aminolevulinic acid-stained brain tumors

Scientific Reports, 2020
Maximal safe tumor resection remains the key prognostic factor for improved prognosis in brain tumor patients. Despite 5-aminolevulinic acid-based fluorescence guidance the neurosurgeon is, however, not able to visualize most low-grade gliomas (LGG) and ...
Mikael T. Erkkilä, David Reichert, Johanna Gesperger, Barbara Kiesel, Thomas Roetzer, Petra A. Mercea, Wolfgang Drexler, Angelika Unterhuber, Rainer A. Leitgeb, Adelheid Woehrer, Angelika Rueck, Marco Andreana, Georg Widhalm   +12 more
doaj   +1 more source