Results 131 to 140 of about 86,147 (197)

Unique properties of light-induced changes of variable chlorophyll fluorescence in purified PSII core complexes of Thermosynechococcus vestitus. [PDF]

Photosynth Res
Schreiber U, Bobkov I, Nowaczyk M.
europepmc   +1 more source

A sensitive polarized fluorometer for clinical tests

IEEE Transactions on Instrumentation and Measurement, 1994
A fully automated fluorometer which measures fluorescence depolarization is described. The instrument has been designed to work with standard microtiter sample holders normally used in clinical tests. The combination of a hybrid optical system, built with discrete optical elements and fiber bundles, and a digital Fourier analysis of the detected ...
P. Lago, ROVATI, Luigi, M. Corti
openaire   +2 more sources

Portable Near-Infrared Fluorometer for a Liposomal Blood Lactate Assay

ACS Pharmacology and Translational Science, 2023
In sepsis, plasma lactate is a key biomarker of disease severity, prognosis, and treatment success. However, the median time to result for clinical lactate tests is 3 h.
Simon Matoori
exaly   +2 more sources

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Filter Fluorometer Calibration Without the Fluorometer

Applied Spectroscopy, 2023
We recently described a lightweight, low-power, waterproof filter fluorometer using a 180° backscatter geometry for chlorophyll-a (chl- a) detection. Before it was constructed it was modeled to ensure it would have satisfactory performance. This manuscript repeats the modeling process that allows the calibration slope and detection limit for a ...
Caitlyn M. English, Zechariah B. Kitzhaber, Kazi Ragib I. Sanim, Nikolaos Vitzilaios, Michael E. Hodgson, Tammi L. Richardson, Michael L. Myrick   +6 more
openaire   +2 more sources

Video fluorometer

Review of Scientific Instruments, 1979
Details of a unique computer controlled multichannel fluorometer are given. Features include: a novel optical system enabling simultaneous acquistion of excitation and emission data over broad spectral ranges, a highly sensitive silicon intensified target (SIT) vidicon detector, and a video interface to a minicomputer allowing data acquisition at the ...
D W, Johnson, J A, Gladden, J B, Callis, G D, Christian   +3 more
openaire   +2 more sources

Kinetic bacteriochlorophyll fluorometer

Photosynthesis Research, 2010
A pump and probe fluorometer with a laser diode as single light source has been constructed for measurement of fast induction and relaxation of the fluorescence yield in intact cells, chromatophores and isolated reaction centers of photosynthetic bacteria.
Péter, Kocsis, Emese, Asztalos, Zoltán, Gingl, Péter, Maróti   +3 more
openaire   +2 more sources

A Spot Fluorometer for Protein Determination

Hoppe-Seyler´s Zeitschrift für physiologische Chemie, 1979
An apparatus is described which allows spot fluorometry in situ for quantitative evaluation of protein spots stained with a fluorochrome (Hoechst 2495).
H G, Zimmer, F, Kiehl, V, Neuhoff
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Fluorometer for endoscopic diagnosis of tumors

Medical Physics, 1984
A filter fluorometer suitable for endoscopic applications has been developed for detection and characterization of superficial tumors by the fluorescence of a previously injected, tumor‐specific agent, hematoporphyrin derivative. Fluorescence is excited by violet light conducted through a fiberoptic lightguide in the endoscope, and the fluorescence ...
A E, Profio, D R, Doiron, J, Sarnaik
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Phase and modulation fluorometer

Journal of Scientific Instruments, 1961
The instrument, which is designed for the measurement of fluorescence decay times of 10-7-10-9 s, comprises a 10 Mc/s hydrogen discharge lamp, fast photomultiplier, variable delay line and detector circuit for phase and modulation analysis of light signals from the lamp and specimen.
J B Birks, D J Dyson
openaire   +1 more source