Results 21 to 30 of about 9,441 (210)

Enzyme Kinetics via Open Circuit Potentiometry [PDF]

, 2020
We demonstrate the application of open circuit potentiometry (OCP) to measure enzyme turnover kinetics, kturn. The electrode surface will become poised by the addition of a well-behaved redox pair such as ferrocenemethanol/ferrocenium methanol (FcMeOH ...
Glasscott, Matthew, Vannoy, Kathryn, Smith, Lettie   +2 more
core   +1 more source

Low-energy electron potentiometry [PDF]

, 2017
In a lot of systems, charge transport is governed by local features rather than being a global property as suggested by extracting a single resistance value.
Johannes Jobst, Molen, S.J. van der, Jaap Kautz, Tromp, R.M., Jobst, J., Kautz, J., Sense Jan van der Molen, Rudolf M. Tromp, Maria Mytiliniou, Mytiliniou, M.   +9 more
core   +1 more source

Potentiometry, chemical equilibria, and flow injection analysis—three important topics taught with one experimental setup [PDF]

, 2023
In general, concepts such as chemical equilibria and classical analytical chemistry, as well as instrumental methods such as potentiometry and flow injection analysis (FIA), are taught separately in the curricula of chemistry-related degree programs ...
Kahlert, Heike, Albrecht, Anja, Meyer, Gabriele   +2 more
core   +1 more source

Uses of nitrate ion sensitive electrodes

Eclética Química, 2018
Some models of ion-selective electrodes (ISE) and other methods have been elaborated, to quantify nitrate levels in environmental samples (water, fruits, vegetables and others), using direct ...
Rubén DEL TÓRO DÉNIS, Ana María PEÓN ESPINOSA, Hubert DANDIE MARSHALLECK, Andres BROCAR ESTEVEZ   +3 more
doaj   +1 more source

Impact of the Covering Vegetable Oil on the Sensory Profile of Canned Tuna of Katsuwonus pelamis Species and Tuna’s Taste Evaluation Using an Electronic Tongue

Chemosensors, 2022
The impact of the covering vegetable oil (sunflower oil, refined olive oil and extra virgin olive oil, EVOO) on the physicochemical and sensory profiles of canned tuna (Katsuwonus pelamis species) was evaluated, using analytical techniques and a sensory ...
Nuno Ferreiro, Nuno Rodrigues, Ana C. A. Veloso, Conceição Fernandes, Helga Paiva, José A. Pereira, António M. Peres   +6 more
doaj   +1 more source

Physio-mechanical Materials Testing Using Scanning Contact Potentiometry Method [PDF]

, 2018
To study the processes of forming and growing embryonic fatigue cracks in steel EI-847 when tested under a uniaxial tension at constant load; adapting the method of scanning contact potentiometry using the INSTRON-5982 machine. The embryo was detected on
Osintsev, A V, Abu Ghazal, A A, Dzhumaev, P S, Surin, V I, Polski, V I   +4 more
core   +1 more source

Potentiometric Determination of Maprotiline Hydrochloride in Pharmaceutical and Biological Matrices Using a Novel Modified Carbon Paste Electrode

Sensors, 2022
Potentiometry with membrane selective electrodes is preferable for measuring the various constituents of pharmaceuticals. In this work, carbon paste electrodes (CPE) were prepared, modified, and tested for the determination of maprotiline hydrochloride ...
Josip Radić, Dorotea Perović, Ema Gričar, Mitja Kolar   +3 more
doaj   +1 more source

Voltammetric Ion Sensing with Ionophore-Based Ion-Selective Electrodes Containing Internal Aqueous Solution, Improving Lifetime of Sensors

Membranes, 2022
The possibility of voltammetric ion sensing is demonstrated, for the first time, for ion-selective electrodes (ISEs) containing an internal aqueous solution. ISEs selective to calcium, lithium and potassium ions are used as model systems.
Valentina Keresten, Konstantin Mikhelson
doaj   +1 more source

Label-Free Monitoring of Histone Acetylation Using Aptamer-Functionalized Field-Effect Transistor and Quartz Crystal Microbalance Sensors

Micromachines, 2020
Chemical and enzymatic modifications of amino acid residues in protein after translation contain rich information about physiological conditions and diseases.
Tatsuro Goda, Yuji Miyahara
doaj   +1 more source

Two Versatile Pencil Graphite–Polymer Sensor Electrodes Coupled with Potentiometry and Potentiometric Titration Methods: Profiling Determinations of Vitamin V in Tablets and Urine Samples

Sensors, 2022
Herein, we developed a new pencil graphite ion-selective electrode strategy for the broadly used erectile dysfunction medication, sildenafil citrate (SC, vitamin V), for its automated potentiometry and potentiometric titration profiling in marketed ...
Abeer M. E. Hassan, Mohamed A. El Hamd, Mahmoud H. El-Maghrabey, Wael A. Mahdi, Sultan Alshehri, Hany A. Batakoushy   +5 more
doaj   +1 more source