Results 11 to 20 of about 12,450 (218)

Fluorometria no domínio da freqüência Frequency-domain fluorometry

open access: yesQuímica Nova, 1999
A didactic description of the frequency-domain fluorometry is presented. Its fundamental aspects, the instrumentation and what one can expect from the technique are discussed.
Marcelo K. K. Nakaema, Rosemary Sanches
doaj   +2 more sources

Measurement of geologic nitrogen using mass spectrometry, colorimetry, and a newly adapted fluorometry technique [PDF]

open access: yesSolid Earth, 2017
Long viewed as a mostly noble, atmospheric species, recent work demonstrates that nitrogen in fact cycles throughout the Earth system, including the atmosphere, biosphere, oceans, and solid Earth.
B. W. Johnson   +5 more
doaj   +3 more sources

Laser-Induced Fluorometry for Capillary Electrophoresis. [PDF]

open access: yesThe chemical record, 2018
Laser-induced fluorometry (LIF) has achieved the detection of single molecules, which ranks it among the most sensitive of detection techniques, whereas capillary electrophoresis (CE) is known as a powerful separation method with resolution that is ...
T. Kaneta
semanticscholar   +2 more sources

A Low-Cost, Portable, Multi-Cancer Screening Device Based on a Ratio Fluorometry and Signal Correlation Technique

open access: yesBiosensors
The autofluorescence of erythrocyte porphyrins has emerged as a potential method for multi-cancer early detection (MCED). With this method’s dependence on research-grade spectrofluorometers, significant improvements in instrumentation are necessary to ...
Abdulaziz S. Alghamdi   +1 more
doaj   +2 more sources

Robustness of high‐throughput prediction of leaf ecophysiological traits using near infrared spectroscopy and poro‐fluorometry

open access: yesThe Plant Phenome Journal, Volume 9, Issue 1, December 2026.
Abstract Water scarcity is a major threat to crop production and quality. Improving drought tolerance through variety selection requires a deeper understanding of plant ecophysiological responses, but large‐scale phenotyping remains a bottleneck. This study assessed the potential of high‐throughput tools (spectroscopy and poro‐fluorometry) to predict ...
Eva Coindre   +13 more
wiley   +2 more sources

Patch-clamp fluorometry: electrophysiology meets fluorescence. [PDF]

open access: yesBiophysical Journal, 2014
Ion channels and transporters are membrane proteins whose functions are driven by conformational changes. Classical biophysical techniques provide insight into either the structure or the function of these proteins, but a full understanding of their ...
J. Kusch, G. Zifarelli
semanticscholar   +2 more sources

The Activity of NADP(H) Oxidoreductase of Elicitated Cell Culture of Cinchona ledgeriana Moens

open access: yesJurnal Ilmu Pertanian Indonesia, 2020
Cinchona ledgeriana Moens is an industrial plant producing secondary metabolite quinoline alkaloids. To maintain and moreover, to increase the quinoline production especially quinine, in vitro culture system through cell culture could be a potential ...
Maulidiyah Utami   +3 more
doaj   +1 more source

Atmospheric nitrogen deposition and canopy retention influences on photosynthetic performance at two high nitrogen deposition Swiss forests [PDF]

open access: yesTellus: Series B, Chemical and Physical Meteorology, 2012
Portable chlorophyll fluorometry measurements, providing plant photosynthetic efficiency (PE) data, were carried out at two contrasting Swiss forests experiencing high nitrogen (N) deposition. Fluorometry data were obtained in conjunction with controlled
E. Wortman   +7 more
doaj   +1 more source

International Intercomparison of In Situ Chlorophyll-a Measurements for Data Quality Assurance of the Swedish Monitoring Program

open access: yesFrontiers in Remote Sensing, 2022
Chlorophyll-a is an essential climate variable. Chlorophyll-a in situ measurements are usually used for the validation of satellite images. Previous intercomparisons have shown that there can be substantial differences between in situ laboratories.
Susanne Kratzer   +3 more
doaj   +1 more source

Experimental Techniques to Assess Coral Physiology in situ Under Global and Local Stressors: Current Approaches and Novel Insights

open access: yesFrontiers in Physiology, 2021
Coral reefs are declining worldwide due to global changes in the marine environment. The increasing frequency of massive bleaching events in the tropics is highlighting the need to better understand the stages of coral physiological responses to extreme ...
Walter Dellisanti   +10 more
doaj   +1 more source

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