Results 141 to 150 of about 12,450 (218)

Colorimetry Combined with Inner Filter Effect-Based Fluorometry: A Versatile and Robust Strategy for Multimode Visualization of Food Dyes.

ACS Applied Materials and Interfaces, 2022
Herein, a strategy combining colorimetry and inner filter effect (IFE)-based fluorometry was developed for multimode visualization of food dyes (FDs) using CdTe quantum-dots-doped fluorescent indicator papers as a sample-to-answer device. Colorimetry was
Shuangshou Wang, Haili Wang, Zhihong Yuan, Mengyao Li, Hong-Rui Gao, Liangjingjing Shan, Ao-Wei Li, Yuwen Ding, Jing Gu, Lei Zhu, Tingxuan Yan, Mingfu Ye, Jin Ye   +12 more
semanticscholar   +1 more source

Laboratory algal bioassays using PAM fluorometry: Effects of test conditions on the determination of herbicide and field sample toxicity

Environmental Toxicology and Chemistry, 2014
Pulse Amplitude Modulation (PAM) fluorometry, based on chlorophyll a fluorescence, is a frequently used technique in algal bioassays to assess toxicity of single compounds or complex field samples.
S. Sjollema, S. A. M. van Beusekom, H. G. van der Geest, P. Booij, D. de Zwart, A. Vethaak, W. Admiraal   +6 more
semanticscholar   +2 more sources

The effect of landfill leachate on hydrogen production in Chlamydomonas reinhardtii as monitored by PAM Fluorometry

International Journal of Hydrogen Energy, 2013
Akash Anandraj, Sarah White, Cristina Trois   +2 more
exaly   +2 more sources

Aggregation of sodium salt of ibuprofen and sodium taurocholate mixture in different media: A tensiometry and fluorometry study

Journal of Chemical Thermodynamics, 2018
Interaction of anionic bile salt sodium taurocholate (NaTaC) and anionic anti-inflammatory drug sodium salt of ibuprofen (NaIBU) in aqueous solutions together with in occurrence of 100 mmmol kg−1 NaCl and 250 mmmol kg−1 urea (NH2CONH2) using tensiometric
M. A. Rub, Naved Azum, F. Khan, Abdullah M. Asiri   +3 more
semanticscholar   +1 more source

Clinical applications of fluorometry

Documenta Ophthalmologica, 1983
An instrument has been developed that measures in ten seconds the level of fluorescein along a scanning line from the retina to the cornea. With spatial resolving power of 1.1 mm in the eye, concentrations of 1 X 10(-8) gr/ml fluorescein and higher are detectable. In this way an indication of the integrity of the blood-ocular barriers is achieved.
Blanksma, L.J., Kooijman, A.C., Roze, J.H., Siertsema, J.V.   +3 more
openaire   +3 more sources

Assessing the suitability of Imaging-PAM fluorometry for monitoring growth of benthic diatoms

Journal of Experimental Marine Biology and Ecology, 2019
High-throughput monitoring of growth using Pulse Amplitude Modulated (PAM) chlorophyll fluorescence imaging (Imaging-PAM) is an important tool for experimental ecological and physiological research on benthic diatom cultures, as due to substrate adhesion
Willem Stock, Lander Blommaert, Ilse Daveloose, W. Vyverman, K. Sabbe   +4 more
semanticscholar   +1 more source

Microcapillary Fluorometry and Standardization for Microscope Fluorometry

1973
Standardization in fluorometry is still connected with difficulties. The theoretical and practical reasons for this have recently been discussed during the National Bureau of Standards conference in Washington (Conference on Accuracy). In the field of microscope fluorometry standardization is even more difficult because of the tiny volumes and amounts ...
M. Sernetz, A. Thaer
openaire   +1 more source

Filterless Fluorometry with Enhanced Sensitivity

Journal of Fluorescence, 2008
We describe a novel approach for fluorometry with light-emitting-diodes (LEDs) as excitation source that capitalizes on the principle of light shielding and total internal reflection to operate without optical filters. This scheme is practicable, demonstrated to significantly reduce the amount of excitation light overlapping the fluorescence signals at
Han Yen, Tan, Tuck Wah, Ng, Oi Wah, Liew
openaire   +2 more sources

DNA-fluorometry of mammalian sperm

Histochemistry, 1977
The Dna-content of sperm and testicular cells was measured by pulse-cytophotometry with high resolution. From flat sperm symmetric and narrow fluorescene distributions were obtained. Enzymatic treatment with papain or pronase and staining with an ethidiumbromide-mithramycin dye solution generate stoichiometric DNA-staining including that of mature ...
J, Zante, J, Schumann, W, Göhde, U, Hacker   +3 more
openaire   +2 more sources

Application of fluorometry in the determination of Vitamin A

Analytical Biochemistry, 1968
Abstract A micromethod is described for the determination of Vitamin A in blood and tissues, based upon application of fluorometric and thin-layer chromatographic techniques. The method is sensitive and relatively rapid. The vitamin can be quantitatively estimated in a blood sample of 0.1 ml, obtained from a finger-tip puncture or in a tissue sample
B D, Drujan, R, Castillon, E, Guerrero
openaire   +2 more sources