Results 41 to 50 of about 3,329,276 (417)
Measurement of the pressure dependence of air fluorescence emission induced by electrons [PDF]
Astropart.Phys.28:41-57,2007, 2007 The fluorescence detection of ultra high energy (> 10^18 eV) cosmic rays requires a detailed knowledge of the fluorescence light emission from nitrogen molecules, which are excited by the cosmic ray shower particles along their path in the atmosphere. We have made a precise measurement of the fluorescence light spectrum excited by MeV electrons in dry ...
arxiv +1 more source
Scan-less full-field fluorescence-lifetime dual-comb microscopy using two-dimensional spectral mapping and frequency multiplexing of dual-optical-comb beats [PDF]
Science Advances, Vol. 7, no. 1, eabd2102 (2021), 2020 Fluorescence lifetime imaging microscopy (FLIM) is a powerful tool for quantitative fluorescence imaging because fluorescence lifetime is independent of concentration of fluorescent molecules or excitation/detection efficiency and is robust to photobleaching.
arxiv +1 more source
On the absolute value of the air-fluorescence yield [PDF]
, 2014 The absolute value of the air-fluorescence yield is a key parameter for the energy reconstruction of extensive air showers registered by fluorescence telescopes.
Arqueros, F., Blanco, F., Rosado, J.
core +2 more sources
Chemistry & Biology, 1996 Taxol is a natural product produced by the Pacific Yew, Taxus brevifolia, that has emerged as a prominent chemotherapeutic agent for the treatment of solid tumors. Taxol's biochemical mode of action has been well studied: it binds to microtubules, stabilizing them and preventing their depolymerization to tubulin subunits.
Guy, R.K. +3 more
openaire +2 more sources
Resonance Fluorescence Spectrum of a Trapped Ion Undergoing Quantum Jumps [PDF]
Phys. Rev. A, Volume 61, 061801(R) (2000), 2000 We experimentally investigate the resonance fluorescence spectrum of single 171Yb and 172Yb ions which are laser cooled to the Lamb-Dicke regime in a radiofrequency trap. While the fluorescence scattering of 172Yb is continuous, the 171Yb fluorescence is interrupted by quantum jumps because a nonvanishing rate of spontaneous transitions leads to ...
arxiv +1 more source
Fluorescence Molecular Tomography for Quantum Yield and Lifetime [PDF]
, 2023 Fluorescence molecular tomography (FMT) is a promising modality for non-invasive imaging of internal fluorescence agents in biological tissues especially in small animal models, with applications in diagnosis, therapy, and drug design. In this paper, we present a new fluorescent reconstruction algorithm that combines time-resolved fluorescence imaging ...
arxiv +1 more source
Hanle detection for optical clocks [PDF]
, 2014 Considering the strong inhomogeneous spatial polarization and intensity distribution of spontaneous decay fluorescence due to the Hanle effect, we propose and demonstrate a universe Hanle detection configuration of electron-shelving method for optical ...
Chen, Jingbiao +6 more
core +3 more sources
Case Studies in Chemical and Environmental Engineering, 2023 This study reports simple analytical approach for thiamine (Vitamin B1) detection based on induced aggregation and alternation in colorimetric properties of gold nanoparticles (AuNPs), which was synthesized through citrate reduction approach. Furthermore,
Uttam R. Kondekar +8 more
doaj
FEBS Letters, EarlyView.The glacier ice worm Mesenchytraeus solifugus survives year‐round at 0 °C. Its ATP6 subunit, which forms a regulatory component of the proton pore in mitochondrial ATP synthase, has a carboxy‐terminal extension not found in any other organism examined to date. Here, we show that fusion of this extension to the homologous AtpB protein in E. coli results
Truman Dunkley +2 more
wiley +1 more source
A multidimensional phasor approach reveals LAURDAN photophysics in NIH-3T3 cell membranes
Scientific Reports, 2017 Mammalian cell membranes have different phospholipid composition and cholesterol content, displaying a profile of fluidity that depends on their intracellular location. Among the dyes used in membrane studies, LAURDAN has the advantage to be sensitive to
Leonel Malacrida +2 more
doaj +1 more source